prewikka/master: OpenSource Graphical Statistics implementation

[email protected] Mon, 11 Jan 2010 17:36:01 +0100 (CET)
Newsgroups gmane.comp.security.ids.prelude.cvs
Message-ID <[email protected]>
commit 3b67ac1361c66f62557acb665d462dfa4a2631c0
Author: Yoann Vandoorselaere <[email protected]>
Date:   Wed Jan 6 17:22:12 2010 +0100

    OpenSource Graphical Statistics implementation
    
    This implement a set of basic statistics for Prewikka, based on
    the (provided) Cairoplot rendering engine.
    
    This initial implementation provides Categorizations, Sources,
    Targets, Analyzers, and Timeline statistics.


========================================

 prewikka/Chart.py             |  398 ++++++++
 prewikka/Core.py              |    4 +-
 prewikka/MyConfigParser.py    |   40 +-
 prewikka/cairoplot.py         | 2265 +++++++++++++++++++++++++++++++++++++++++
 prewikka/templates/Stats.tmpl |  167 +++
 prewikka/utils.py             |   26 +
 prewikka/views/__init__.py    |   14 +-
 prewikka/views/stats.py       |  850 ++++++++++++++++
 setup.py                      |    1 +
 9 files changed, 3725 insertions(+), 40 deletions(-)

========================================

diff --git a/prewikka/Chart.py b/prewikka/Chart.py
new file mode 100644
index 0000000..073eb93
--- /dev/null
+++ b/prewikka/Chart.py
@@ -0,0 +1,398 @@
+# Copyright (C) 2005-2009 PreludeIDS Technologies. All Rights Reserved.
+# Author: Nicolas Delon <[email protected]>
+# Author: Yoann Vandoorselaere <[email protected]>
+#
+# This file is part of the Prewikka program.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+import stat
+import time
+import base64
+import os, os.path
+import glob, tempfile
+
+from prewikka import utils, siteconfig, cairoplot
+from preludedb import PreludeDBError
+
+from xml.dom.minidom import parse, parseString
+
+RED_STD = "c1292e"
+ORANGE_STD = "F29324"
+YELLOW_STD = "f8e930"
+GREEN_STD = "7ab41d"
+BLUE_STD = "528fc8"
+
+COLOR_MAP = "528fc8", "7ab41d", "f8e930", "F29324", "c1292e", "874b94", "212483", \
+            "487118", "ea752c", "8C0A14", "5F3269", "196d38"
+
+
+
+def userToHex(user):
+    if not user:
+        return ""
+
+    hval = ""
+    for i in user:
+        hval += hex(ord(i)).replace("0x", "")
+
+    return hval
+
+
+class ChartCommon:
+    def __init__(self, width=800, height=450):
+        self._filename = None
+        self._values = [ ]
+        self._labels = [ ]
+        self._has_title = False
+        self._support_link = False
+        self._width = width
+        self._height = height
+        self._color_map = COLOR_MAP
+        self._names_map = {}
+        self._color_map_idx = 0
+
+    def hex2rgb(self, color):
+        r = int(color[0:2], 16)
+        g = int(color[2:4], 16)
+        b = int(color[4:6], 16)
+
+        return (r/255.0, g/255.0, b/255.0)
+
+    def getWidth(self):
+        return self._width
+
+    def getHeight(self):
+        return self._height
+
+    def _colorMap2str(self):
+        if type(self._color_map) not in (list, tuple):
+            return None
+
+        str = ""
+        for color  in self._color_map:
+            if len(str):
+                str += ","
+
+            str += color
+
+        return str
+
+    def getItemColor(self, str):
+        if isinstance(self._color_map, dict):
+            return self._color_map[str]
+
+        color = self._color_map[self._color_map_idx % len(self._color_map)]
+        self._color_map_idx += 1
+
+        return color
+
+    def setColorMap(self, plist):
+        self._color_map = plist
+
+    def getFilename(self):
+        return self._filename
+
+    def getHref(self):
+        return self._href
+
+    def setTitle(self, title):
+        self.addTitle(title, "", 14)
+        self._has_title = True
+
+    def setValues(self, values):
+        self._values = values
+
+    def setLabels(self, labels):
+        self._labels = labels
+
+    def addLabelValuePair(self, label, value, link=None):
+        self._labels.append(label)
+        if self._support_link:
+            self._values.append((value, utils.escape_html_string(link)))
+        else:
+            self._values.append(value)
+
+    def _remove_old_chart_files(self, pathname, expire):
+        directory = pathname + "_*"
+        files = glob.glob(directory)
+
+        used = None
+        prev = None
+
+        for f in files:
+            mtime = os.stat(f)[stat.ST_MTIME]
+            now = time.time()
+
+            if not expire or (now - mtime) > (2 * expire):
+                os.remove(f)
+
+    def _getFilename(self, name, expire = None, user = None, uid=None, gid=None, suffix=".png"):
+        old_mask = os.umask(0)
+        basename = base64.urlsafe_b64encode(name)
+        pathname = os.path.join(siteconfig.htdocs_dir, "generated_images")
+
+        user = base64.urlsafe_b64encode(user)
+        pathname = os.path.normpath(os.path.join(pathname, user))
+
+        try:
+            os.mkdir(pathname, 0755)
+        except: pass
+        if uid != None and gid != None:
+            os.lchown(pathname, uid, gid)
+
+        self._remove_old_chart_files(os.path.join(pathname, basename), expire)
+
+        fd, self._filename = tempfile.mkstemp(prefix = basename + "_", suffix = suffix, dir = pathname)
+        if uid != None and gid != None:
+            os.lchown(self._filename, uid, gid)
+
+        os.chmod(self._filename, 0644)
+
+        self._href = "prewikka/generated_images/%s" % (user or "") + "/" + os.path.basename(self._filename)
+        os.umask(old_mask)
+
+        return self._filename
+
+class TimelineChartCommon(ChartCommon):
+    def getType(self):
+        return "None"
+
+    def __init__(self, width, height):
+        ChartCommon.__init__(self, width, height)
+        self._got_value = False
+        self._color_map_idx = 0
+        self._assigned_colors = {}
+        self._multiple_values = False
+        self._total = []
+
+    def enableMultipleValues(self, names_and_colors={}):
+        self._multiple_values = True
+        self._names_and_colors = names_and_colors
+
+        self._values = utils.OrderedDict()
+        for name in self._names_and_colors.keys():
+                self._values[name] = []
+
+    def getItemColor(self, name):
+        if not self._multiple_values:
+            return ChartCommon.getItemColor(self, name)
+
+        if self._names_and_colors.has_key(name):
+                return self._names_and_colors[name]
+
+        if self._assigned_colors.has_key(name):
+                return self._assigned_colors[name]
+
+        color = self._assigned_colors[name] = ChartCommon.getItemColor(self, name)
+        return color
+
+    def _itemFromValue(self, value):
+        if isinstance(value, tuple):
+            return value
+        return value, None
+
+        if self._support_link:
+                return value[0], utils.escape_html_string(value[1])
+        else:
+                return value[0]
+
+    def addLabelValuesPair(self, label, values, total_link):
+        empty = True
+        for i in values.values():
+            if i != 0:
+                empty = False
+                break
+
+        if not self._got_value and empty:
+            # do not add 0 only values at the beginning of the chart
+            return
+
+        if self._support_link and total_link:
+            total_link = utils.escape_html_string(total_link)
+
+        self._labels.append(label)
+
+        clen = 0
+        if self._values:
+                clen = len(self._values.values()[0])
+
+        total = 0
+        for name in values.keys():
+            if not self._values.has_key(name):
+                if clen > 0:
+                    self._values[name] = [(0, None) for i in range(0, clen)]
+                else:
+                    self._values[name] = []
+
+            value = self._itemFromValue(values[name])
+            self._values[name].append(value)
+
+            total += value[0]
+
+        self._total.append((total, total_link))
+
+        for name in self._values.keys():
+            if not values.has_key(name):
+                self._values[name].append(self._itemFromValue(0))
+
+        self._got_value = True
+
+    def addLabelValuePair(self, label, values, link=None):
+        if self._multiple_values or isinstance(values, dict):
+            if not isinstance(self._values, dict):
+                self._values = utils.OrderedDict()
+
+            self.addLabelValuesPair(label, values, link)
+        else:
+            ChartCommon.addLabelValuePair(self, label, values, link)
+
+
+class CairoDistributionChart(ChartCommon):
+    def getType(self):
+        return "None"
+
+    def render(self, name, expire=None, user=None, suffix=".png", uid=None, gid=None):
+        fname = self._getFilename(name, expire, user, uid, gid);
+
+        color = []
+        idx = 0
+        data = {}
+        total = 0
+
+        for l, v in zip(self._labels, self._values):
+                total += v
+                data[str(l)] = v
+
+                item_color = self.getItemColor(str(l))
+                if item_color:
+                        color.append(self.hex2rgb(item_color))
+                else:
+                        color.append(self.hex2rgb(self._color_map[idx % len(self._color_map)]))
+
+                idx += 1
+
+        other = 0
+        if data:
+            share = 100.0 / total
+
+        for key in data.keys():
+                if data[key] * share < 1:
+                        other += data[key]
+                else:
+                        nkey = key + ", %.1f%% (%d)" % (share * data[key], data[key])
+                        data[nkey] = data[key]
+
+                data.pop(key)
+
+        if other:
+                data["Other, %.1f%% (%d)" % (share * other, other)] = other
+
+        cairoplot.pie_plot(fname, data, self._width, self._height, gradient = True, shadow = True, colors=color)
+
+
+class CairoTimelineChart(TimelineChartCommon):
+    def render(self, name, expire=None, user=None, suffix=".png", uid=None, gid=None):
+        fname = self._getFilename(name, expire, user, uid, gid);
+
+        colors = []
+        legend = []
+        values = {}
+        for name in self._values.keys():
+                nname = name[0:min(len(name), 25)]
+                if not values.has_key(nname):
+                        values[nname] = []
+
+                for item in self._values[name]:
+                        values[nname].append(item[0])
+
+                colors.append(self.hex2rgb(self.getItemColor(name)))
+        cairoplot.dot_line_plot(fname, values, self._width, self._height, border=0, axis=True, grid=True,
+                                x_labels = self._labels, series_legend=True, series_colors=colors)
+
+
+class CairoStackedTimelineChart(TimelineChartCommon):
+    def render(self, name, expire=None, user=None, suffix=".png", uid=None, gid=None):
+        fname = self._getFilename(name, expire, user, uid, gid);
+
+        colors = []
+        legend = []
+        labels = []
+        data = []
+        minval = 0
+        maxval = 0
+
+        values_items = self._values.items()
+
+        for i in xrange(0, len(self._labels)):
+            l = []
+            total = 0
+            for name, values in values_items:
+                l.append(values[i])
+                total += values[i]
+
+            minval = min(minval, total)
+            maxval = max(maxval, total)
+            data.append(l)
+
+        l = minval
+        increment = maxval / 20.0
+        for i in xrange(0, 20+1):
+            labels.append("%.1f" % l)
+            l += increment
+
+        idx = 0
+
+        for name, color in self._names_and_colors.values():
+                if self._values.has_key(name):
+                        if color:
+                                colors.append(self.hex2rgb(color))
+                        else:
+                                colors.append(self.hex2rgb(COLOR_MAP[idx % len(COLOR_MAP)]))
+                                idx += 1
+                        legend.append(name)
+
+        cairoplot.vertical_bar_plot(fname, data, self._width, self._height, border=0, series_labels=legend, display_values=True, grid=True, rounded_corners=False, stack=True,
+                                    three_dimension=False, y_labels=labels, x_labels = self._labels, colors=colors)
+
+
+class CairoWorldChart(CairoDistributionChart):
+        def needCountryCode(self):
+            return False
+
+class TimelineChart(object):
+        def __new__(cls, width, height):
+                o = CairoTimelineChart(width, height)
+                o.isFlash = False
+                return o
+
+class StackedTimelineChart(object):
+        def __new__(cls, width, height):
+                o = CairoStackedTimelineChart(width, height)
+                o.isFlash = False
+                return o
+
+class WorldChart(object):
+        def __new__(cls, width, height):
+                o = CairoWorldChart(width, height)
+                o.isFlash = False
+                return o
+
+class DistributionChart(object):
+        def __new__(cls, width, height):
+                o = CairoDistributionChart(width, height)
+                o.isFlash = True
+                return o
diff --git a/prewikka/Core.py b/prewikka/Core.py
index 530feb6..b15a931 100644
--- a/prewikka/Core.py
+++ b/prewikka/Core.py
@@ -169,7 +169,7 @@ class Core:
         self._view_to_tab = { }
         self._view_to_section = { }
 
-        for section, tabs in (prewikka.views.events_section, prewikka.views.agents_section,
+        for section, tabs in (prewikka.views.events_section, prewikka.views.agents_section, prewikka.views.stats_section,
                               prewikka.views.settings_section, prewikka.views.about_section):
             for tab, views in tabs:
                 for view in views:
@@ -218,7 +218,7 @@ class Core:
     def _setupDataSet(self, dataset, request, user, view=None, parameters={}):
         init_dataset(dataset, self._env.config, request)
 
-        sections = prewikka.views.events_section, prewikka.views.agents_section, prewikka.views.settings_section, \
+        sections = prewikka.views.events_section, prewikka.views.agents_section, prewikka.views.stats_section, prewikka.views.settings_section, \
                    prewikka.views.about_section
 
         section_to_tabs = { }
diff --git a/prewikka/MyConfigParser.py b/prewikka/MyConfigParser.py
index 380e6e4..1ca0a46 100644
--- a/prewikka/MyConfigParser.py
+++ b/prewikka/MyConfigParser.py
@@ -36,41 +36,9 @@ class ParseError(Error):
         return "parse error in \"%s\" at %s line %d" % (self.line.rstrip(), self.filename, self.lineno)
 
 
-
-class OrderedDict(dict):
-    def __init__(self):
-        dict.__init__(self)
-        self.ordered_key_list = [ ]
-
-    def __delitem__(self, key):
-        dict.__delitem__(self, key)
-        self.ordered_key_list.remove(key)
-
-    def __setitem__(self, key, value):
-        dict.__setitem__(self, key, value)
-        if not key in self.ordered_key_list:
-            self.ordered_key_list.append(key)
-
-    def values(self):
-        return map(lambda k: self[k], self.ordered_key_list)
-
-    def keys(self):
-        return self.ordered_key_list
-
-    def items(self):
-        return map(lambda key: (key, self[key]), self.ordered_key_list)
-
-    def copy(self):
-        new = OrderedDict()
-        for key in self.keys():
-            new[key] = self[key]
-        return new
-
-
-
-class ConfigParserSection(OrderedDict):
+class ConfigParserSection(utils.OrderedDict):
     def __init__(self, name):
-        OrderedDict.__init__(self)
+        utils.OrderedDict.__init__(self)
         self.name = name
 
     def __nonzero__(self):
@@ -116,8 +84,8 @@ class MyConfigParser:
 
     def __init__(self, filename):
         self.filename = filename
-        self._sections = OrderedDict()
-        self._root_section = OrderedDict()
+        self._sections = utils.OrderedDict()
+        self._root_section = utils.OrderedDict()
         self._current_section = self._root_section
 
     def load(self):
diff --git a/prewikka/cairoplot.py b/prewikka/cairoplot.py
new file mode 100644
index 0000000..e81559d
--- /dev/null
+++ b/prewikka/cairoplot.py
@@ -0,0 +1,2265 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# CairoPlot.py
+#
+# Copyright (c) 2008 Rodrigo Moreira Araújo
+#
+# Author: Rodrigo Moreiro Araujo <[email protected]>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+# USA
+
+#Contributor: João S. O. Bueno
+
+#TODO: review BarPlot Code
+#TODO: x_label colision problem on Horizontal Bar Plot
+#TODO: y_label's eat too much space on HBP
+
+
+__version__ = 1.1
+
+import cairo
+import math
+import random
+
+HORZ = 0
+VERT = 1
+NORM = 2
+
+COLORS = {"red"    : (1.0,0.0,0.0,1.0), "lime"    : (0.0,1.0,0.0,1.0), "blue"   : (0.0,0.0,1.0,1.0),
+          "maroon" : (0.5,0.0,0.0,1.0), "green"   : (0.0,0.5,0.0,1.0), "navy"   : (0.0,0.0,0.5,1.0),
+          "yellow" : (1.0,1.0,0.0,1.0), "magenta" : (1.0,0.0,1.0,1.0), "cyan"   : (0.0,1.0,1.0,1.0),
+          "orange" : (1.0,0.5,0.0,1.0), "white"   : (1.0,1.0,1.0,1.0), "black"  : (0.0,0.0,0.0,1.0),
+          "gray" : (0.5,0.5,0.5,1.0), "light_gray" : (0.9,0.9,0.9,1.0),
+          "transparent" : (0.0,0.0,0.0,0.0)}
+
+THEMES = {"black_red"         : [(0.0,0.0,0.0,1.0), (1.0,0.0,0.0,1.0)],
+          "red_green_blue"    : [(1.0,0.0,0.0,1.0), (0.0,1.0,0.0,1.0), (0.0,0.0,1.0,1.0)],
+          "red_orange_yellow" : [(1.0,0.2,0.0,1.0), (1.0,0.7,0.0,1.0), (1.0,1.0,0.0,1.0)],
+          "yellow_orange_red" : [(1.0,1.0,0.0,1.0), (1.0,0.7,0.0,1.0), (1.0,0.2,0.0,1.0)],
+          "rainbow"           : [(1.0,0.0,0.0,1.0), (1.0,0.5,0.0,1.0), (1.0,1.0,0.0,1.0), (0.0,1.0,0.0,1.0), (0.0,0.0,1.0,1.0), (0.3, 0.0, 0.5,1.0), (0.5, 0.0, 1.0, 1.0)]}
+
+def colors_from_theme( theme, series_length, mode = 'solid' ):
+    colors = []
+    if theme not in THEMES.keys() :
+        raise Exception, "Theme not defined"
+    color_steps = THEMES[theme]
+    n_colors = len(color_steps)
+    if series_length <= n_colors:
+        colors = [color + tuple([mode]) for color in color_steps[0:n_colors]]
+    else:
+        iterations = [(series_length - n_colors)/(n_colors - 1) for i in color_steps[:-1]]
+        over_iterations = (series_length - n_colors) % (n_colors - 1)
+        for i in range(n_colors - 1):
+            if over_iterations <= 0:
+                break
+            iterations[i] += 1
+            over_iterations -= 1
+        for index,color in enumerate(color_steps[:-1]):
+            colors.append(color + tuple([mode]))
+            if iterations[index] == 0:
+                continue
+            next_color = color_steps[index+1]
+            color_step = ((next_color[0] - color[0])/(iterations[index] + 1),
+                          (next_color[1] - color[1])/(iterations[index] + 1),
+                          (next_color[2] - color[2])/(iterations[index] + 1),
+                          (next_color[3] - color[3])/(iterations[index] + 1))
+            for i in range( iterations[index] ):
+                colors.append((color[0] + color_step[0]*(i+1),
+                               color[1] + color_step[1]*(i+1),
+                               color[2] + color_step[2]*(i+1),
+                               color[3] + color_step[3]*(i+1),
+                               mode))
+        colors.append(color_steps[-1] + tuple([mode]))
+    return colors
+
+
+def other_direction(direction):
+    "explicit is better than implicit"
+    if direction == HORZ:
+        return VERT
+    else:
+        return HORZ
+
+#Class definition
+
+class Plot(object):
+    def __init__(self,
+                 surface=None,
+                 data=None,
+                 width=640,
+                 height=480,
+                 background=None,
+                 border = 0,
+                 x_labels = None,
+                 y_labels = None,
+                 series_colors = None):
+        random.seed(2)
+        self.create_surface(surface, width, height)
+        self.dimensions = {}
+        self.dimensions[HORZ] = width
+        self.dimensions[VERT] = height
+        self.context = cairo.Context(self.surface)
+        self.labels={}
+        self.labels[HORZ] = x_labels
+        self.labels[VERT] = y_labels
+        self.load_series(data, x_labels, y_labels, series_colors)
+        self.font_size = 10
+        self.set_background (background)
+        self.border = border
+        self.borders = {}
+        self.line_color = (0.5, 0.5, 0.5)
+        self.line_width = 0.5
+        self.label_color = (0.0, 0.0, 0.0)
+        self.grid_color = (0.8, 0.8, 0.8)
+
+    def create_surface(self, surface, width=None, height=None):
+        self.filename = None
+        if isinstance(surface, cairo.Surface):
+            self.surface = surface
+            return
+        if not type(surface) in (str, unicode):
+            raise TypeError("Surface should be either a Cairo surface or a filename, not %s" % surface)
+        sufix = surface.rsplit(".")[-1].lower()
+        self.filename = surface
+        if sufix == "png":
+            self.surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
+        elif sufix == "ps":
+            self.surface = cairo.PSSurface(surface, width, height)
+        elif sufix == "pdf":
+            self.surface = cairo.PSSurface(surface, width, height)
+        else:
+            if sufix != "svg":
+                self.filename += ".svg"
+            self.surface = cairo.SVGSurface(self.filename, width, height)
+
+    def commit(self):
+        try:
+            self.context.show_page()
+            if self.filename and self.filename.endswith(".png"):
+                self.surface.write_to_png(self.filename)
+            else:
+                self.surface.finish()
+        except cairo.Error:
+            pass
+
+    def load_series (self, data, x_labels=None, y_labels=None, series_colors=None):
+        #FIXME: implement Series class for holding series data,
+        # labels and presentation properties
+
+        #data can be a list, a list of lists or a dictionary with
+        #each item as a labeled data series.
+        #we should (for the time being) create a list of lists
+        #and set labels for teh series rom  teh values provided.
+
+        self.series_labels = []
+        self.data = []
+        #dictionary
+        if hasattr(data, "keys"):
+            self.series_labels = data.keys()
+            for key in self.series_labels:
+                self.data.append(data[key])
+        #lists of lists:
+        elif max([hasattr(item,'__delitem__') for item in data]) :
+            self.data = data
+            self.series_labels = range(len(data))
+        #list
+        else:
+            self.data = [data]
+            self.series_labels = None
+        #TODO: allow user passed series_widths
+        self.series_widths = [1.0 for series in self.data]
+        self.process_colors( series_colors )
+
+    def process_colors( self, series_colors, length = None, mode = 'solid' ):
+        #series_colors might be None, a theme, a string of colors names or a string of color tuples
+        if length is None :
+            length = len( self.data )
+        #no colors passed
+        if not series_colors:
+            #Randomize colors
+            self.series_colors = [ [random.random() for i in range(3)] + [1.0, mode]  for series in range( length ) ]
+        else:
+            #Just theme pattern
+            if not hasattr( series_colors, "__iter__" ):
+                theme = series_colors
+                self.series_colors = colors_from_theme( theme.lower(), length )
+            #Theme pattern and mode
+            elif not hasattr(series_colors, '__delitem__') and not hasattr( series_colors[0], "__iter__" ):
+                theme = series_colors[0]
+                mode = series_colors[1]
+                self.series_colors = colors_from_theme( theme.lower(), length, mode )
+            #List
+            else:
+                self.series_colors = series_colors
+                for index, color in enumerate( self.series_colors ):
+                    #element is a color name
+                    if not hasattr(color, "__iter__"):
+                        self.series_colors[index] = COLORS[color.lower()] + tuple([mode])
+                    #element is rgb tuple instead of rgba
+                    elif len( color ) == 3 :
+                        self.series_colors[index] += (1.0,mode)
+                    #element has 4 elements, might be rgba tuple or rgb tuple with mode
+                    elif len( color ) == 4 :
+                        #last element is mode
+                        if not hasattr(color[3], "__iter__"):
+                            self.series_colors[index] += tuple([color[3]])
+                            self.series_colors[index][3] = 1.0
+                        #last element is alpha
+                        else:
+                            self.series_colors[index] += tuple([mode])
+
+    def get_width(self):
+        return self.surface.get_width()
+
+    def get_height(self):
+        return self.surface.get_height()
+
+    def set_background(self, background):
+        if background is None:
+            self.background = (0.0,0.0,0.0,0.0)
+        elif type(background) in (cairo.LinearGradient, tuple):
+            self.background = background
+        elif not hasattr(background,"__iter__"):
+            colors = background.split(" ")
+            if len(colors) == 1 and colors[0] in COLORS:
+                self.background = COLORS[background]
+            elif len(colors) > 1:
+                self.background = cairo.LinearGradient(self.dimensions[HORZ] / 2, 0, self.dimensions[HORZ] / 2, self.dimensions[VERT])
+                for index,color in enumerate(colors):
+                    self.background.add_color_stop_rgba(float(index)/(len(colors)-1),*COLORS[color])
+        else:
+            raise TypeError ("Background should be either cairo.LinearGradient or a 3-tuple, not %s" % type(background))
+
+    def render_background(self):
+        if isinstance(self.background, cairo.LinearGradient):
+            self.context.set_source(self.background)
+        else:
+            self.context.set_source_rgba(*self.background)
+        self.context.rectangle(0,0, self.dimensions[HORZ], self.dimensions[VERT])
+        self.context.fill()
+
+    def render_bounding_box(self):
+        self.context.set_source_rgba(*self.line_color)
+        self.context.set_line_width(self.line_width)
+        self.context.rectangle(self.border, self.border,
+                               self.dimensions[HORZ] - 2 * self.border,
+                               self.dimensions[VERT] - 2 * self.border)
+        self.context.stroke()
+
+    def render(self):
+        pass
+
+class ScatterPlot( Plot ):
+    def __init__(self,
+                 surface=None,
+                 data=None,
+                 errorx=None,
+                 errory=None,
+                 width=640,
+                 height=480,
+                 background=None,
+                 border=0,
+                 axis = False,
+                 dash = False,
+                 discrete = False,
+                 dots = 0,
+                 grid = False,
+                 series_legend = False,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 z_bounds = None,
+                 x_title  = None,
+                 y_title  = None,
+                 series_colors = None,
+                 circle_colors = None ):
+
+        self.bounds = {}
+        self.bounds[HORZ] = x_bounds
+        self.bounds[VERT] = y_bounds
+        self.bounds[NORM] = z_bounds
+        self.titles = {}
+        self.titles[HORZ] = x_title
+        self.titles[VERT] = y_title
+        self.max_value = {}
+        self.axis = axis
+        self.discrete = discrete
+        self.dots = dots
+        self.grid = grid
+        self.series_legend = series_legend
+        self.variable_radius = False
+        self.x_label_angle = math.pi / 2.5
+        self.circle_colors = circle_colors
+
+        Plot.__init__(self, surface, data, width, height, background, border, x_labels, y_labels, series_colors)
+
+        self.dash = None
+        if dash:
+            if hasattr(dash, "keys"):
+                self.dash = [dash[key] for key in self.series_labels]
+            elif max([hasattr(item,'__delitem__') for item in data]) :
+                self.dash = dash
+            else:
+                self.dash = [dash]
+
+        self.load_errors(errorx, errory)
+
+    def convert_list_to_tuple(self, data):
+        #Data must be converted from lists of coordinates to a single
+        # list of tuples
+        out_data = zip(*data)
+        if len(data) == 3:
+            self.variable_radius = True
+        return out_data
+
+    def load_series(self, data, x_labels = None, y_labels = None, series_colors=None):
+        #Dictionary with lists
+        if hasattr(data, "keys") :
+            if hasattr( data.values()[0][0], "__delitem__" ) :
+                for key in data.keys() :
+                    data[key] = self.convert_list_to_tuple(data[key])
+            elif len(data.values()[0][0]) == 3:
+                    self.variable_radius = True
+        #List
+        elif hasattr(data[0], "__delitem__") :
+            #List of lists
+            if hasattr(data[0][0], "__delitem__") :
+                for index,value in enumerate(data) :
+                    data[index] = self.convert_list_to_tuple(value)
+            #List
+            elif type(data[0][0]) != type((0,0)):
+                data = self.convert_list_to_tuple(data)
+            #Three dimensional data
+            elif len(data[0][0]) == 3:
+                self.variable_radius = True
+        #List with three dimensional tuples
+        elif len(data[0]) == 3:
+            self.variable_radius = True
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        self.calc_boundaries()
+        self.calc_labels()
+
+    def load_errors(self, errorx, errory):
+        self.errors = None
+        if errorx == None and errory == None:
+            return
+        self.errors = {}
+        self.errors[HORZ] = None
+        self.errors[VERT] = None
+        #asimetric errors
+        if errorx and hasattr(errorx[0], "__delitem__"):
+            self.errors[HORZ] = errorx
+        #simetric errors
+        elif errorx:
+            self.errors[HORZ] = [errorx]
+        #asimetric errors
+        if errory and hasattr(errory[0], "__delitem__"):
+            self.errors[VERT] = errory
+        #simetric errors
+        elif errory:
+            self.errors[VERT] = [errory]
+
+    def calc_labels(self):
+        if not self.labels[HORZ]:
+            amplitude = self.bounds[HORZ][1] - self.bounds[HORZ][0]
+            if amplitude % 10: #if horizontal labels need floating points
+                self.labels[HORZ] = ["%.2lf" % (float(self.bounds[HORZ][0] + (amplitude * i / 10.0))) for i in range(11) ]
+            else:
+                self.labels[HORZ] = ["%d" % (int(self.bounds[HORZ][0] + (amplitude * i / 10.0))) for i in range(11) ]
+        if not self.labels[VERT]:
+            amplitude = self.bounds[VERT][1] - self.bounds[VERT][0]
+            if amplitude % 10: #if vertical labels need floating points
+                self.labels[VERT] = ["%.2lf" % (float(self.bounds[VERT][0] + (amplitude * i / 10.0))) for i in range(11) ]
+            else:
+                self.labels[VERT] = ["%d" % (int(self.bounds[VERT][0] + (amplitude * i / 10.0))) for i in range(11) ]
+
+    def calc_extents(self, direction):
+        self.context.set_font_size(self.font_size * 0.8)
+        self.max_value[direction] = max(self.context.text_extents(item)[2] for item in self.labels[direction])
+        self.borders[other_direction(direction)] = self.max_value[direction] + self.border + 20
+
+    def calc_boundaries(self):
+        #HORZ = 0, VERT = 1, NORM = 2
+        min_data_value = [0,0,0]
+        max_data_value = [0,0,0]
+        for serie in self.data :
+            for tuple in serie :
+                for index, item in enumerate(tuple) :
+                    if item > max_data_value[index]:
+                        max_data_value[index] = item
+                    elif item < min_data_value[index]:
+                        min_data_value[index] = item
+
+        if not self.bounds[HORZ]:
+            self.bounds[HORZ] = (min_data_value[HORZ], max_data_value[HORZ])
+        if not self.bounds[VERT]:
+            self.bounds[VERT] = (min_data_value[VERT], max_data_value[VERT])
+        if not self.bounds[NORM]:
+            self.bounds[NORM] = (min_data_value[NORM], max_data_value[NORM])
+
+    def calc_all_extents(self):
+        self.calc_extents(HORZ)
+        self.calc_extents(VERT)
+
+        self.plot_height = self.dimensions[VERT] - 2 * self.borders[VERT]
+        self.plot_width = self.dimensions[HORZ] - 2* self.borders[HORZ]
+
+        self.plot_top = self.dimensions[VERT] - self.borders[VERT]
+
+    def calc_steps(self):
+        #Calculates all the x, y, z and color steps
+        series_amplitude = [self.bounds[index][1] - self.bounds[index][0] for index in range(3)]
+
+        if series_amplitude[HORZ]:
+            self.horizontal_step = float (self.plot_width) / series_amplitude[HORZ]
+        else:
+            self.horizontal_step = 0.00
+
+        if series_amplitude[VERT]:
+            self.vertical_step = float (self.plot_height) / series_amplitude[VERT]
+        else:
+            self.vertical_step = 0.00
+
+        if series_amplitude[NORM]:
+            if self.variable_radius:
+                self.z_step = float (self.bounds[NORM][1]) / series_amplitude[NORM]
+            if self.circle_colors:
+                self.circle_color_step = tuple([float(self.circle_colors[1][i]-self.circle_colors[0][i])/series_amplitude[NORM] for i in range(4)])
+        else:
+            self.z_step = 0.00
+            self.circle_color_step = ( 0.0, 0.0, 0.0, 0.0 )
+
+    def get_circle_color(self, value):
+        return tuple( [self.circle_colors[0][i] + value*self.circle_color_step[i] for i in range(4)] )
+
+    def render(self):
+        self.calc_all_extents()
+        self.calc_steps()
+        self.render_background()
+        self.render_bounding_box()
+        if self.axis:
+            self.render_axis()
+        if self.grid:
+            self.render_grid()
+        self.render_labels()
+        self.render_plot()
+        if self.errors:
+            self.render_errors()
+        if self.series_legend and self.series_labels:
+            self.render_legend()
+
+    def render_axis(self):
+        #Draws both the axis lines and their titles
+        cr = self.context
+        cr.set_source_rgba(*self.line_color)
+        cr.move_to(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT])
+        cr.line_to(self.borders[HORZ], self.borders[VERT])
+        cr.stroke()
+
+        cr.move_to(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT])
+        cr.line_to(self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT])
+        cr.stroke()
+
+        cr.set_source_rgba(*self.label_color)
+        self.context.set_font_size( 1.2 * self.font_size )
+        if self.titles[HORZ]:
+            title_width,title_height = cr.text_extents(self.titles[HORZ])[2:4]
+            cr.move_to( self.dimensions[HORZ]/2 - title_width/2, self.borders[VERT] - title_height/2 )
+            cr.show_text( self.titles[HORZ] )
+
+        if self.titles[VERT]:
+            title_width,title_height = cr.text_extents(self.titles[VERT])[2:4]
+            cr.move_to( self.dimensions[HORZ] - self.borders[HORZ] + title_height/2, self.dimensions[VERT]/2 - title_width/2)
+            cr.rotate( math.pi/2 )
+            cr.show_text( self.titles[VERT] )
+            cr.rotate( -math.pi/2 )
+
+    def render_grid(self):
+        cr = self.context
+        horizontal_step = float( self.plot_height ) / ( len( self.labels[VERT] ) - 1 )
+        vertical_step = float( self.plot_width ) / ( len( self.labels[HORZ] ) - 1 )
+
+        x = self.borders[HORZ] + vertical_step
+        y = self.plot_top - horizontal_step
+
+        for label in self.labels[HORZ][:-1]:
+            cr.set_source_rgba(*self.grid_color)
+            cr.move_to(x, self.dimensions[VERT] - self.borders[VERT])
+            cr.line_to(x, self.borders[VERT])
+            cr.stroke()
+            x += vertical_step
+        for label in self.labels[VERT][:-1]:
+            cr.set_source_rgba(*self.grid_color)
+            cr.move_to(self.borders[HORZ], y)
+            cr.line_to(self.dimensions[HORZ] - self.borders[HORZ], y)
+            cr.stroke()
+            y -= horizontal_step
+
+    def render_labels(self):
+        self.context.set_font_size(self.font_size * 0.8)
+        self.render_horz_labels()
+        self.render_vert_labels()
+
+    def render_horz_labels(self):
+        cr = self.context
+        step = float( self.plot_width ) / ( len( self.labels[HORZ] ) - 1 )
+        x = self.borders[HORZ]
+        for item in self.labels[HORZ]:
+            cr.set_source_rgba(*self.label_color)
+            width = cr.text_extents(item)[2]
+            cr.move_to(x, self.dimensions[VERT] - self.borders[VERT] + 5)
+            cr.rotate(self.x_label_angle)
+            cr.show_text(item)
+            cr.rotate(-self.x_label_angle)
+            x += step
+
+    def render_vert_labels(self):
+        cr = self.context
+        step = ( self.plot_height ) / ( len( self.labels[VERT] ) - 1 )
+        y = self.plot_top
+        for item in self.labels[VERT]:
+            cr.set_source_rgba(*self.label_color)
+            width = cr.text_extents(item)[2]
+            cr.move_to(self.borders[HORZ] - width - 5,y)
+            cr.show_text(item)
+            y -= step
+
+    def render_legend(self):
+        cr = self.context
+        cr.set_font_size(self.font_size)
+        cr.set_line_width(self.line_width)
+
+        widest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[2])
+        tallest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[3])
+        max_width = self.context.text_extents(widest_word)[2]
+        max_height = self.context.text_extents(tallest_word)[3] * 1.1
+
+        color_box_height = max_height / 2
+        color_box_width = color_box_height * 2
+
+        #Draw a bounding box
+        bounding_box_width = max_width + color_box_width + 15
+        bounding_box_height = (len(self.series_labels)+0.5) * max_height
+        cr.set_source_rgba(1,1,1)
+        cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - bounding_box_width, self.borders[VERT],
+                            bounding_box_width, bounding_box_height)
+        cr.fill()
+
+        cr.set_source_rgba(*self.line_color)
+        cr.set_line_width(self.line_width)
+        cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - bounding_box_width, self.borders[VERT],
+                            bounding_box_width, bounding_box_height)
+        cr.stroke()
+
+        for idx,key in enumerate(self.series_labels):
+            #Draw color box
+            cr.set_source_rgba(*self.series_colors[idx][:4])
+            cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - max_width - color_box_width - 10,
+                                self.borders[VERT] + color_box_height + (idx*max_height) ,
+                                color_box_width, color_box_height)
+            cr.fill()
+
+            cr.set_source_rgba(0, 0, 0)
+            cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - max_width - color_box_width - 10,
+                                self.borders[VERT] + color_box_height + (idx*max_height),
+                                color_box_width, color_box_height)
+            cr.stroke()
+
+            #Draw series labels
+            cr.set_source_rgba(0, 0, 0)
+            cr.move_to(self.dimensions[HORZ] - self.borders[HORZ] - max_width - 5, self.borders[VERT] + ((idx+1)*max_height))
+            cr.show_text(key)
+
+    def render_errors(self):
+        cr = self.context
+        cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height)
+        cr.clip()
+        radius = self.dots
+        x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step
+        y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step
+        for index, serie in enumerate(self.data):
+            cr.set_source_rgba(*self.series_colors[index][:4])
+            for number, tuple in enumerate(serie):
+                x = x0 + self.horizontal_step * tuple[0]
+                y = self.dimensions[VERT] - y0 - self.vertical_step * tuple[1]
+                if self.errors[HORZ]:
+                    cr.move_to(x, y)
+                    x1 = x - self.horizontal_step * self.errors[HORZ][0][number]
+                    cr.line_to(x1, y)
+                    cr.line_to(x1, y - radius)
+                    cr.line_to(x1, y + radius)
+                    cr.stroke()
+                if self.errors[HORZ] and len(self.errors[HORZ]) == 2:
+                    cr.move_to(x, y)
+                    x1 = x + self.horizontal_step * self.errors[HORZ][1][number]
+                    cr.line_to(x1, y)
+                    cr.line_to(x1, y - radius)
+                    cr.line_to(x1, y + radius)
+                    cr.stroke()
+                if self.errors[VERT]:
+                    cr.move_to(x, y)
+                    y1 = y + self.vertical_step   * self.errors[VERT][0][number]
+                    cr.line_to(x, y1)
+                    cr.line_to(x - radius, y1)
+                    cr.line_to(x + radius, y1)
+                    cr.stroke()
+                if self.errors[VERT] and len(self.errors[VERT]) == 2:
+                    cr.move_to(x, y)
+                    y1 = y - self.vertical_step   * self.errors[VERT][1][number]
+                    cr.line_to(x, y1)
+                    cr.line_to(x - radius, y1)
+                    cr.line_to(x + radius, y1)
+                    cr.stroke()
+
+
+    def render_plot(self):
+        cr = self.context
+        if self.discrete:
+            cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height)
+            cr.clip()
+            x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step
+            y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step
+            radius = self.dots
+            for number, serie in  enumerate (self.data):
+                cr.set_source_rgba(*self.series_colors[number][:4])
+                for tuple in serie :
+                    if self.variable_radius:
+                        radius = tuple[2]*self.z_step
+                        if self.circle_colors:
+                            cr.set_source_rgba( *self.get_circle_color( tuple[2]) )
+                    x = x0 + self.horizontal_step*tuple[0]
+                    y = y0 + self.vertical_step*tuple[1]
+                    cr.arc(x, self.dimensions[VERT] - y, radius, 0, 2*math.pi)
+                    cr.fill()
+        else:
+            cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height)
+            cr.clip()
+            x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step
+            y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step
+            radius = self.dots
+            for number, serie in  enumerate (self.data):
+                last_tuple = None
+                cr.set_source_rgba(*self.series_colors[number][:4])
+                for tuple in serie :
+                    x = x0 + self.horizontal_step*tuple[0]
+                    y = y0 + self.vertical_step*tuple[1]
+                    if self.dots:
+                        if self.variable_radius:
+                            radius = tuple[2]*self.z_step
+                        cr.arc(x, self.dimensions[VERT] - y, radius, 0, 2*math.pi)
+                        cr.fill()
+                    if last_tuple :
+                        old_x = x0 + self.horizontal_step*last_tuple[0]
+                        old_y = y0 + self.vertical_step*last_tuple[1]
+                        cr.move_to( old_x, self.dimensions[VERT] - old_y )
+                        cr.line_to( x, self.dimensions[VERT] - y)
+                        cr.set_line_width(self.series_widths[number])
+
+                        # Display line as dash line
+                        if self.dash and self.dash[number]:
+                            s = self.series_widths[number]
+                            cr.set_dash([s*3, s*3], 0)
+
+                        cr.stroke()
+                        cr.set_dash([])
+                    last_tuple = tuple
+
+class DotLinePlot(ScatterPlot):
+    def __init__(self,
+                 surface=None,
+                 data=None,
+                 width=640,
+                 height=480,
+                 background=None,
+                 border=0,
+                 axis = False,
+                 dash = False,
+                 dots = 0,
+                 grid = False,
+                 series_legend = False,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 x_title  = None,
+                 y_title  = None,
+                 series_colors = None):
+
+        ScatterPlot.__init__(self, surface, data, None, None, width, height, background, border,
+                             axis, dash, False, dots, grid, series_legend, x_labels, y_labels,
+                             x_bounds, y_bounds, None, x_title, y_title, series_colors, None )
+
+
+    def load_series(self, data, x_labels = None, y_labels = None, series_colors=None):
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        for serie in self.data :
+            for index,value in enumerate(serie):
+                serie[index] = (index, value)
+
+        self.calc_boundaries()
+        self.calc_labels()
+
+class FunctionPlot(ScatterPlot):
+    def __init__(self,
+                 surface=None,
+                 data=None,
+                 width=640,
+                 height=480,
+                 background=None,
+                 border=0,
+                 axis = False,
+                 discrete = False,
+                 dots = 0,
+                 grid = False,
+                 series_legend = False,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 x_title  = None,
+                 y_title  = None,
+                 series_colors = None,
+                 step = 1):
+
+        self.function = data
+        self.step = step
+        self.discrete = discrete
+
+        data, x_bounds = self.load_series_from_function( self.function, x_bounds )
+
+        ScatterPlot.__init__(self, surface, data, None, None, width, height, background, border,
+                             axis, False, discrete, dots, grid, series_legend, x_labels, y_labels,
+                             x_bounds, y_bounds, None, x_title, y_title, series_colors, None )
+
+    def load_series(self, data, x_labels = None, y_labels = None, series_colors=None):
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        for serie in self.data :
+            for index,value in enumerate(serie):
+                serie[index] = (self.bounds[HORZ][0] + self.step*index, value)
+
+        self.calc_boundaries()
+        self.calc_labels()
+
+    def load_series_from_function( self, function, x_bounds ):
+        #TODO: Add the possibility for the user to define multiple functions with different discretization parameters
+
+        #This function converts a function, a list of functions or a dictionary
+        #of functions into its corresponding array of data
+        data = None
+        #if no bounds are provided
+        if x_bounds == None:
+            x_bounds = (0,10)
+
+        if hasattr(function, "keys"): #dictionary:
+            data = {}
+            for key in function.keys():
+                data[ key ] = []
+                i = x_bounds[0]
+                while i <= x_bounds[1] :
+                    data[ key ].append( function[ key ](i) )
+                    i += self.step
+        elif hasattr(function, "__delitem__"): #list of functions
+            data = []
+            for index,f in enumerate( function ) :
+                data.append( [] )
+                i = x_bounds[0]
+                while i <= x_bounds[1] :
+                    data[ index ].append( f(i) )
+                    i += self.step
+        else: #function
+            data = []
+            i = x_bounds[0]
+            while i <= x_bounds[1] :
+                data.append( function(i) )
+                i += self.step
+
+        return data, x_bounds
+
+    def calc_labels(self):
+        if not self.labels[HORZ]:
+            self.labels[HORZ] = []
+            i = self.bounds[HORZ][0]
+            while i<=self.bounds[HORZ][1]:
+                self.labels[HORZ].append(str(i))
+                i += float(self.bounds[HORZ][1] - self.bounds[HORZ][0])/10
+        ScatterPlot.calc_labels(self)
+
+    def render_plot(self):
+        if not self.discrete:
+            ScatterPlot.render_plot(self)
+        else:
+            last = None
+            cr = self.context
+            for number, series in  enumerate (self.data):
+                cr.set_source_rgba(*self.series_colors[number][:4])
+                x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step
+                y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step
+                for tuple in series:
+                    x = x0 + self.horizontal_step * tuple[0]
+                    y = y0 + self.vertical_step   * tuple[1]
+                    cr.move_to(x, self.dimensions[VERT] - y)
+                    cr.line_to(x, self.plot_top)
+                    cr.set_line_width(self.series_widths[number])
+                    cr.stroke()
+                    if self.dots:
+                        cr.new_path()
+                        cr.arc(x, self.dimensions[VERT] - y, 3, 0, 2.1 * math.pi)
+                        cr.close_path()
+                        cr.fill()
+
+class BarPlot(Plot):
+    def __init__(self,
+                 surface = None,
+                 data = None,
+                 width = 640,
+                 height = 480,
+                 background = "white light_gray",
+                 border = 0,
+                 display_values = False,
+                 grid = False,
+                 rounded_corners = False,
+                 stack = False,
+                 three_dimension = False,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 series_colors = None,
+                 main_dir = None):
+
+        self.bounds = {}
+        self.bounds[HORZ] = x_bounds
+        self.bounds[VERT] = y_bounds
+        self.display_values = display_values
+        self.grid = grid
+        self.rounded_corners = rounded_corners
+        self.stack = stack
+        self.three_dimension = three_dimension
+        self.x_label_angle = math.pi / 2.5
+        self.main_dir = main_dir
+        self.max_value = {}
+        self.plot_dimensions = {}
+        self.steps = {}
+        self.value_label_color = (0.5,0.5,0.5,1.0)
+
+        Plot.__init__(self, surface, data, width, height, background, border, x_labels, y_labels, series_colors)
+
+    def load_series(self, data, x_labels = None, y_labels = None, series_colors = None):
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        self.calc_boundaries()
+
+    def process_colors(self, series_colors):
+        #Data for a BarPlot might be a List or a List of Lists.
+        #On the first case, colors must be generated for all bars,
+        #On the second, colors must be generated for each of the inner lists.
+        if hasattr(self.data[0], '__getitem__'):
+            length = max(len(series) for series in self.data)
+        else:
+            length = len( self.data )
+
+        Plot.process_colors( self, series_colors, length, 'linear')
+
+    def calc_boundaries(self):
+        if not self.bounds[self.main_dir]:
+            if self.stack:
+                max_data_value = max(sum(serie) for serie in self.data)
+            else:
+                max_data_value = max(max(serie) for serie in self.data)
+            self.bounds[self.main_dir] = (0, max_data_value)
+        if not self.bounds[other_direction(self.main_dir)]:
+            self.bounds[other_direction(self.main_dir)] = (0, len(self.data))
+
+    def calc_extents(self, direction):
+        self.max_value[direction] = 0
+        if self.labels[direction]:
+            widest_word = max(self.labels[direction], key = lambda item: self.context.text_extents(item)[2])
+            self.max_value[direction] = self.context.text_extents(widest_word)[3 - direction]
+            self.borders[other_direction(direction)] = (2-direction)*self.max_value[direction] + self.border + direction*(5)
+        else:
+            self.borders[other_direction(direction)] = self.border
+
+    def calc_horz_extents(self):
+        self.calc_extents(HORZ)
+
+    def calc_vert_extents(self):
+        self.calc_extents(VERT)
+
+    def calc_all_extents(self):
+        self.calc_horz_extents()
+        self.calc_vert_extents()
+        other_dir = other_direction(self.main_dir)
+        self.value_label = 0
+        if self.display_values:
+            if self.stack:
+                self.value_label = self.context.text_extents(str(max(sum(serie) for serie in self.data)))[2 + self.main_dir]
+            else:
+                self.value_label = self.context.text_extents(str(max(max(serie) for serie in self.data)))[2 + self.main_dir]
+        if self.labels[self.main_dir]:
+            self.plot_dimensions[self.main_dir] = self.dimensions[self.main_dir] - 2*self.borders[self.main_dir] - self.value_label
+        else:
+            self.plot_dimensions[self.main_dir] = self.dimensions[self.main_dir] - self.borders[self.main_dir] - 1.2*self.border - self.value_label
+        self.plot_dimensions[other_dir] = self.dimensions[other_dir] - self.borders[other_dir] - self.border
+        self.plot_top = self.dimensions[VERT] - self.borders[VERT]
+
+    def calc_steps(self):
+        other_dir = other_direction(self.main_dir)
+        self.series_amplitude = self.bounds[self.main_dir][1] - self.bounds[self.main_dir][0]
+        if self.series_amplitude:
+            self.steps[self.main_dir] = float(self.plot_dimensions[self.main_dir])/self.series_amplitude
+        else:
+            self.steps[self.main_dir] = 0.00
+        series_length = len(self.data)
+        self.steps[other_dir] = float(self.plot_dimensions[other_dir])/(series_length + 0.1*(series_length + 1))
+        self.space = 0.1*self.steps[other_dir]
+
+    def render(self):
+        self.calc_all_extents()
+        self.calc_steps()
+        self.render_background()
+        self.render_bounding_box()
+        if self.grid:
+            self.render_grid()
+        if self.three_dimension:
+            self.render_ground()
+        if self.display_values:
+            self.render_values()
+        self.render_labels()
+        self.render_plot()
+        if self.series_labels:
+            self.render_legend()
+
+    def draw_3d_rectangle_front(self, x0, y0, x1, y1, shift):
+        self.context.rectangle(x0-shift, y0+shift, x1-x0, y1-y0)
+
+    def draw_3d_rectangle_side(self, x0, y0, x1, y1, shift):
+        self.context.move_to(x1-shift,y0+shift)
+        self.context.line_to(x1, y0)
+        self.context.line_to(x1, y1)
+        self.context.line_to(x1-shift, y1+shift)
+        self.context.line_to(x1-shift, y0+shift)
+        self.context.close_path()
+
+    def draw_3d_rectangle_top(self, x0, y0, x1, y1, shift):
+        self.context.move_to(x0-shift,y0+shift)
+        self.context.line_to(x0, y0)
+        self.context.line_to(x1, y0)
+        self.context.line_to(x1-shift, y0+shift)
+        self.context.line_to(x0-shift, y0+shift)
+        self.context.close_path()
+
+    def draw_round_rectangle(self, x0, y0, x1, y1):
+        self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2)
+        self.context.line_to(x1-5, y0)
+        self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0)
+        self.context.line_to(x1, y1-5)
+        self.context.arc(x1-5, y1-5, 5, 0, math.pi/2)
+        self.context.line_to(x0+5, y1)
+        self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi)
+        self.context.line_to(x0, y0+5)
+        self.context.close_path()
+
+    def render_ground(self):
+        self.draw_3d_rectangle_front(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+        self.draw_3d_rectangle_side (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+        self.draw_3d_rectangle_top  (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+    def render_labels(self):
+        self.context.set_font_size(self.font_size * 0.8)
+        if self.labels[HORZ]:
+            self.render_horz_labels()
+        if self.labels[VERT]:
+            self.render_vert_labels()
+
+    def render_legend(self):
+        cr = self.context
+        cr.set_font_size(self.font_size)
+        cr.set_line_width(self.line_width)
+
+        widest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[2])
+        tallest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[3])
+        max_width = self.context.text_extents(widest_word)[2]
+        max_height = self.context.text_extents(tallest_word)[3] * 1.1 + 5
+
+        color_box_height = max_height / 2
+        color_box_width = color_box_height * 2
+
+        #Draw a bounding box
+        bounding_box_width = max_width + color_box_width + 15
+        bounding_box_height = (len(self.series_labels)+0.5) * max_height
+        cr.set_source_rgba(1,1,1)
+        cr.rectangle(self.dimensions[HORZ] - self.border - bounding_box_width, self.border,
+                            bounding_box_width, bounding_box_height)
+        cr.fill()
+
+        cr.set_source_rgba(*self.line_color)
+        cr.set_line_width(self.line_width)
+        cr.rectangle(self.dimensions[HORZ] - self.border - bounding_box_width, self.border,
+                            bounding_box_width, bounding_box_height)
+        cr.stroke()
+
+        for idx,key in enumerate(self.series_labels):
+            #Draw color box
+            cr.set_source_rgba(*self.series_colors[idx][:4])
+            cr.rectangle(self.dimensions[HORZ] - self.border - max_width - color_box_width - 10,
+                                self.border + color_box_height + (idx*max_height) ,
+                                color_box_width, color_box_height)
+            cr.fill()
+
+            cr.set_source_rgba(0, 0, 0)
+            cr.rectangle(self.dimensions[HORZ] - self.border - max_width - color_box_width - 10,
+                                self.border + color_box_height + (idx*max_height),
+                                color_box_width, color_box_height)
+            cr.stroke()
+
+            #Draw series labels
+            cr.set_source_rgba(0, 0, 0)
+            cr.move_to(self.dimensions[HORZ] - self.border - max_width - 5, self.border + ((idx+1)*max_height))
+            cr.show_text(key)
+
+
+class HorizontalBarPlot(BarPlot):
+    def __init__(self,
+                 surface = None,
+                 data = None,
+                 width = 640,
+                 height = 480,
+                 background = "white light_gray",
+                 border = 0,
+                 display_values = False,
+                 grid = False,
+                 rounded_corners = False,
+                 stack = False,
+                 three_dimension = False,
+                 series_labels = None,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 series_colors = None):
+
+        BarPlot.__init__(self, surface, data, width, height, background, border,
+                         display_values, grid, rounded_corners, stack, three_dimension,
+                         x_labels, y_labels, x_bounds, y_bounds, series_colors, HORZ)
+        self.series_labels = series_labels
+
+    def calc_vert_extents(self):
+        self.calc_extents(VERT)
+        if self.labels[HORZ] and not self.labels[VERT]:
+            self.borders[HORZ] += 10
+
+    def draw_rectangle_bottom(self, x0, y0, x1, y1):
+        self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi)
+        self.context.line_to(x0, y0+5)
+        self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2)
+        self.context.line_to(x1, y0)
+        self.context.line_to(x1, y1)
+        self.context.line_to(x0+5, y1)
+        self.context.close_path()
+
+    def draw_rectangle_top(self, x0, y0, x1, y1):
+        self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0)
+        self.context.line_to(x1, y1-5)
+        self.context.arc(x1-5, y1-5, 5, 0, math.pi/2)
+        self.context.line_to(x0, y1)
+        self.context.line_to(x0, y0)
+        self.context.line_to(x1, y0)
+        self.context.close_path()
+
+    def draw_rectangle(self, index, length, x0, y0, x1, y1):
+        if length == 1:
+            BarPlot.draw_rectangle(self, x0, y0, x1, y1)
+        elif index == 0:
+            self.draw_rectangle_bottom(x0, y0, x1, y1)
+        elif index == length-1:
+            self.draw_rectangle_top(x0, y0, x1, y1)
+        else:
+            self.context.rectangle(x0, y0, x1-x0, y1-y0)
+
+    #TODO: Review BarPlot.render_grid code
+    def render_grid(self):
+        self.context.set_source_rgba(0.8, 0.8, 0.8)
+        if self.labels[HORZ]:
+            self.context.set_font_size(self.font_size * 0.8)
+            step = (self.dimensions[HORZ] - 2*self.borders[HORZ] - self.value_label)/(len(self.labels[HORZ])-1)
+            x = self.borders[HORZ]
+            next_x = 0
+            for item in self.labels[HORZ]:
+                width = self.context.text_extents(item)[2]
+                if x - width/2 > next_x and x - width/2 > self.border:
+                    self.context.move_to(x, self.border)
+                    self.context.line_to(x, self.dimensions[VERT] - self.borders[VERT])
+                    self.context.stroke()
+                    next_x = x + width/2
+                x += step
+        else:
+            lines = 11
+            horizontal_step = float(self.plot_dimensions[HORZ])/(lines-1)
+            x = self.borders[HORZ]
+            for y in xrange(0, lines):
+                self.context.move_to(x, self.border)
+                self.context.line_to(x, self.dimensions[VERT] - self.borders[VERT])
+                self.context.stroke()
+                x += horizontal_step
+
+    def render_horz_labels(self):
+        step = (self.dimensions[HORZ] - 2*self.borders[HORZ])/(len(self.labels[HORZ])-1)
+        x = self.borders[HORZ]
+        next_x = 0
+
+        for item in self.labels[HORZ]:
+            self.context.set_source_rgba(*self.label_color)
+            width = self.context.text_extents(item)[2]
+            if x - width/2 > next_x and x - width/2 > self.border:
+                self.context.move_to(x - width/2, self.dimensions[VERT] - self.borders[VERT] + self.max_value[HORZ] + 3)
+                self.context.show_text(item)
+                next_x = x + width/2
+            x += step
+
+    def render_vert_labels(self):
+        series_length = len(self.labels[VERT])
+        step = (self.plot_dimensions[VERT] - (series_length + 1)*self.space)/(len(self.labels[VERT]))
+        y = self.border + step/2 + self.space
+
+        for item in self.labels[VERT]:
+            self.context.set_source_rgba(*self.label_color)
+            width, height = self.context.text_extents(item)[2:4]
+            self.context.move_to(self.borders[HORZ] - width - 5, y + height/2)
+            self.context.show_text(item)
+            y += step + self.space
+        self.labels[VERT].reverse()
+
+    def render_values(self):
+        self.context.set_source_rgba(*self.value_label_color)
+        self.context.set_font_size(self.font_size * 0.8)
+        if self.stack:
+            for i,series in enumerate(self.data):
+                value = sum(series)
+                height = self.context.text_extents(str(value))[3]
+                x = self.borders[HORZ] + value*self.steps[HORZ] + 2
+                y = self.borders[VERT] + (i+0.5)*self.steps[VERT] + (i+1)*self.space + height/2
+                self.context.move_to(x, y)
+                self.context.show_text(str(value))
+        else:
+            for i,series in enumerate(self.data):
+                inner_step = self.steps[VERT]/len(series)
+                y0 = self.border + i*self.steps[VERT] + (i+1)*self.space
+                for number,key in enumerate(series):
+                    height = self.context.text_extents(str(key))[3]
+                    self.context.move_to(self.borders[HORZ] + key*self.steps[HORZ] + 2, y0 + 0.5*inner_step + height/2, )
+                    self.context.show_text(str(key))
+                    y0 += inner_step
+
+    def render_plot(self):
+        if self.stack:
+            for i,series in enumerate(self.data):
+                x0 = self.borders[HORZ]
+                y0 = self.borders[VERT] + i*self.steps[VERT] + (i+1)*self.space
+                for number,key in enumerate(series):
+                    if self.series_colors[number][4] in ('radial','linear') :
+                        linear = cairo.LinearGradient( key*self.steps[HORZ]/2, y0, key*self.steps[HORZ]/2, y0 + self.steps[VERT] )
+                        color = self.series_colors[number]
+                        linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0)
+                        linear.add_color_stop_rgba(1.0, *color[:4])
+                        self.context.set_source(linear)
+                    elif self.series_colors[number][4] == 'solid':
+                        self.context.set_source_rgba(*self.series_colors[number][:4])
+                    if self.rounded_corners:
+                        self.draw_rectangle(number, len(series), x0, y0, x0+key*self.steps[HORZ], y0+self.steps[VERT])
+                        self.context.fill()
+                    else:
+                        self.context.rectangle(x0, y0, key*self.steps[HORZ], self.steps[VERT])
+                        self.context.fill()
+                    x0 += key*self.steps[HORZ]
+        else:
+            for i,series in enumerate(self.data):
+                inner_step = self.steps[VERT]/len(series)
+                x0 = self.borders[HORZ]
+                y0 = self.border + i*self.steps[VERT] + (i+1)*self.space
+                for number,key in enumerate(series):
+                    linear = cairo.LinearGradient(key*self.steps[HORZ]/2, y0, key*self.steps[HORZ]/2, y0 + inner_step)
+                    color = self.series_colors[number]
+                    linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0)
+                    linear.add_color_stop_rgba(1.0, *color[:4])
+                    self.context.set_source(linear)
+                    if self.rounded_corners and key != 0:
+                        BarPlot.draw_round_rectangle(self,x0, y0, x0 + key*self.steps[HORZ], y0 + inner_step)
+                        self.context.fill()
+                    else:
+                        self.context.rectangle(x0, y0, key*self.steps[HORZ], inner_step)
+                        self.context.fill()
+                    y0 += inner_step
+
+class VerticalBarPlot(BarPlot):
+    def __init__(self,
+                 surface = None,
+                 data = None,
+                 width = 640,
+                 height = 480,
+                 background = "white light_gray",
+                 border = 0,
+                 display_values = False,
+                 grid = False,
+                 rounded_corners = False,
+                 stack = False,
+                 three_dimension = False,
+                 series_labels = None,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 series_colors = None):
+
+        BarPlot.__init__(self, surface, data, width, height, background, border,
+                         display_values, grid, rounded_corners, stack, three_dimension,
+                         x_labels, y_labels, x_bounds, y_bounds, series_colors, VERT)
+        self.series_labels = series_labels
+
+    def calc_vert_extents(self):
+        self.calc_extents(VERT)
+        if self.labels[VERT] and not self.labels[HORZ]:
+            self.borders[VERT] += 10
+
+    def draw_rectangle_bottom(self, x0, y0, x1, y1):
+        self.context.move_to(x1,y1)
+        self.context.arc(x1-5, y1-5, 5, 0, math.pi/2)
+        self.context.line_to(x0+5, y1)
+        self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi)
+        self.context.line_to(x0, y0)
+        self.context.line_to(x1, y0)
+        self.context.line_to(x1, y1)
+        self.context.close_path()
+
+    def draw_rectangle_top(self, x0, y0, x1, y1):
+        self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2)
+        self.context.line_to(x1-5, y0)
+        self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0)
+        self.context.line_to(x1, y1)
+        self.context.line_to(x0, y1)
+        self.context.line_to(x0, y0)
+        self.context.close_path()
+
+    def draw_rectangle(self, index, length, x0, y0, x1, y1):
+        if length == 1:
+            BarPlot.draw_rectangle(self, x0, y0, x1, y1)
+        elif index == 0:
+            self.draw_rectangle_bottom(x0, y0, x1, y1)
+        elif index == length-1:
+            self.draw_rectangle_top(x0, y0, x1, y1)
+        else:
+            self.context.rectangle(x0, y0, x1-x0, y1-y0)
+
+    def render_grid(self):
+        self.context.set_source_rgba(0.8, 0.8, 0.8)
+        if self.labels[VERT]:
+            lines = len(self.labels[VERT])
+            vertical_step = float(self.plot_dimensions[self.main_dir])/(lines-1)
+            y = self.borders[VERT] + self.value_label
+        else:
+            lines = 11
+            vertical_step = float(self.plot_dimensions[self.main_dir])/(lines-1)
+            y = 1.2*self.border + self.value_label
+        for x in xrange(0, lines):
+            self.context.move_to(self.borders[HORZ], y)
+            self.context.line_to(self.dimensions[HORZ] - self.border, y)
+            self.context.stroke()
+            y += vertical_step
+
+    def render_ground(self):
+        self.draw_3d_rectangle_front(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+        self.draw_3d_rectangle_side (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+        self.draw_3d_rectangle_top  (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT],
+                                     self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10)
+        self.context.fill()
+
+    def render_horz_labels(self):
+        series_length = len(self.labels[HORZ])
+        step = float (self.plot_dimensions[HORZ] - (series_length + 1)*self.space)/len(self.labels[HORZ])
+        x = self.borders[HORZ] + step/2 + self.space
+        next_x = 0
+
+        for item in self.labels[HORZ]:
+            self.context.set_source_rgba(*self.label_color)
+            width = self.context.text_extents(item)[2]
+            if x - width/2 > next_x and x - width/2 > self.borders[HORZ]:
+                self.context.move_to(x - width/2, self.dimensions[VERT] - self.borders[VERT] + self.max_value[HORZ] + 3)
+                self.context.show_text(item)
+                next_x = x + width/2
+            x += step + self.space
+
+    def render_vert_labels(self):
+        self.context.set_source_rgba(*self.label_color)
+        y = self.borders[VERT] + self.value_label
+        step = (self.dimensions[VERT] - 2*self.borders[VERT] - self.value_label)/(len(self.labels[VERT]) - 1)
+        self.labels[VERT].reverse()
+        for item in self.labels[VERT]:
+            width, height = self.context.text_extents(item)[2:4]
+            self.context.move_to(self.borders[HORZ] - width - 5, y + height/2)
+            self.context.show_text(item)
+            y += step
+        self.labels[VERT].reverse()
+
+    def render_values(self):
+        self.context.set_source_rgba(*self.value_label_color)
+        self.context.set_font_size(self.font_size * 0.8)
+        if self.stack:
+            for i,series in enumerate(self.data):
+                value = sum(series)
+                width = self.context.text_extents(str(value))[2]
+                x = self.borders[HORZ] + (i+0.5)*self.steps[HORZ] + (i+1)*self.space - width/2
+                y = value*self.steps[VERT] + 2
+                self.context.move_to(x, self.plot_top-y)
+                self.context.show_text(str(value))
+        else:
+            for i,series in enumerate(self.data):
+                inner_step = self.steps[HORZ]/len(series)
+                x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space
+                for number,key in enumerate(series):
+                    width = self.context.text_extents(str(key))[2]
+                    self.context.move_to(x0 + 0.5*inner_step - width/2, self.plot_top - key*self.steps[VERT] - 2)
+                    self.context.show_text(str(key))
+                    x0 += inner_step
+
+    def render_plot(self):
+        if self.stack:
+            for i,series in enumerate(self.data):
+                x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space
+                y0 = 0
+                for number,key in enumerate(series):
+                    if self.series_colors[number][4] in ('linear','radial'):
+                        linear = cairo.LinearGradient( x0, key*self.steps[VERT]/2, x0 + self.steps[HORZ], key*self.steps[VERT]/2 )
+                        color = self.series_colors[number]
+                        linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0)
+                        linear.add_color_stop_rgba(1.0, *color[:4])
+                        self.context.set_source(linear)
+                    elif self.series_colors[number][4] == 'solid':
+                        self.context.set_source_rgba(*self.series_colors[number][:4])
+                    if self.rounded_corners:
+                        self.draw_rectangle(number, len(series), x0, self.plot_top - y0 - key*self.steps[VERT], x0 + self.steps[HORZ], self.plot_top - y0)
+                        self.context.fill()
+                    else:
+                        self.context.rectangle(x0, self.plot_top - y0 - key*self.steps[VERT], self.steps[HORZ], key*self.steps[VERT])
+                        self.context.fill()
+                    y0 += key*self.steps[VERT]
+        else:
+            for i,series in enumerate(self.data):
+                inner_step = self.steps[HORZ]/len(series)
+                y0 = self.borders[VERT]
+                x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space
+                for number,key in enumerate(series):
+                    if self.series_colors[number][4] == 'linear':
+                        linear = cairo.LinearGradient( x0, key*self.steps[VERT]/2, x0 + inner_step, key*self.steps[VERT]/2 )
+                        color = self.series_colors[number]
+                        linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0)
+                        linear.add_color_stop_rgba(1.0, *color[:4])
+                        self.context.set_source(linear)
+                    elif self.series_colors[number][4] == 'solid':
+                        self.context.set_source_rgba(*self.series_colors[number][:4])
+                    if self.rounded_corners and key != 0:
+                        BarPlot.draw_round_rectangle(self, x0, self.plot_top - key*self.steps[VERT], x0+inner_step, self.plot_top)
+                        self.context.fill()
+                    elif self.three_dimension:
+                        self.draw_3d_rectangle_front(x0, self.plot_top - key*self.steps[VERT], x0+inner_step, self.plot_top, 5)
+                        self.context.fill()
+                        self.draw_3d_rectangle_side(x0, self.plot_top - key*self.steps[VERT], x0+inner_step, self.plot_top, 5)
+                        self.context.fill()
+                        self.draw_3d_rectangle_top(x0, self.plot_top - key*self.steps[VERT], x0+inner_step, self.plot_top, 5)
+                        self.context.fill()
+                    else:
+                        self.context.rectangle(x0, self.plot_top - key*self.steps[VERT], inner_step, key*self.steps[VERT])
+                        self.context.fill()
+
+                    x0 += inner_step
+
+class StreamChart(VerticalBarPlot):
+    def __init__(self,
+                 surface = None,
+                 data = None,
+                 width = 640,
+                 height = 480,
+                 background = "white light_gray",
+                 border = 0,
+                 grid = False,
+                 series_legend = None,
+                 x_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 series_colors = None):
+
+        VerticalBarPlot.__init__(self, surface, data, width, height, background, border,
+                                 False, grid, False, True, False,
+                                 None, x_labels, None, x_bounds, y_bounds, series_colors)
+
+    def calc_steps(self):
+        other_dir = other_direction(self.main_dir)
+        self.series_amplitude = self.bounds[self.main_dir][1] - self.bounds[self.main_dir][0]
+        if self.series_amplitude:
+            self.steps[self.main_dir] = float(self.plot_dimensions[self.main_dir])/self.series_amplitude
+        else:
+            self.steps[self.main_dir] = 0.00
+        series_length = len(self.data)
+        self.steps[other_dir] = float(self.plot_dimensions[other_dir])/series_length
+
+    def render_legend(self):
+        pass
+
+    def ground(self, index):
+        sum_values = sum(self.data[index])
+        return -0.5*sum_values
+
+    def calc_angles(self):
+        middle = self.plot_top - self.plot_dimensions[VERT]/2.0
+        self.angles = [tuple([0.0 for x in range(len(self.data)+1)])]
+        for x_index in range(1, len(self.data)-1):
+            t = []
+            x0 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ]
+            x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ]
+            y0 = middle - self.ground(x_index-1)*self.steps[VERT]
+            y2 = middle - self.ground(x_index+1)*self.steps[VERT]
+            t.append(math.atan(float(y0-y2)/(x0-x2)))
+            for data_index in range(len(self.data[x_index])):
+                x0 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ]
+                x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ]
+                y0 = middle - self.ground(x_index-1)*self.steps[VERT] - self.data[x_index-1][data_index]*self.steps[VERT]
+                y2 = middle - self.ground(x_index+1)*self.steps[VERT] - self.data[x_index+1][data_index]*self.steps[VERT]
+
+                for i in range(0,data_index):
+                    y0 -= self.data[x_index-1][i]*self.steps[VERT]
+                    y2 -= self.data[x_index+1][i]*self.steps[VERT]
+
+                if data_index == len(self.data[0])-1 and False:
+                    self.context.set_source_rgba(0.0,0.0,0.0,0.3)
+                    self.context.move_to(x0,y0)
+                    self.context.line_to(x2,y2)
+                    self.context.stroke()
+                    self.context.arc(x0,y0,2,0,2*math.pi)
+                    self.context.fill()
+                t.append(math.atan(float(y0-y2)/(x0-x2)))
+            self.angles.append(tuple(t))
+        self.angles.append(tuple([0.0 for x in range(len(self.data)+1)]))
+
+    def render_plot(self):
+        self.calc_angles()
+        middle = self.plot_top - self.plot_dimensions[VERT]/2.0
+        p = 0.4*self.steps[HORZ]
+        for data_index in range(len(self.data[0])-1,-1,-1):
+            self.context.set_source_rgba(*self.series_colors[data_index][:4])
+
+            #draw the upper line
+            for x_index in range(len(self.data)-1) :
+                x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ]
+                y1 = middle - self.ground(x_index)*self.steps[VERT] - self.data[x_index][data_index]*self.steps[VERT]
+                x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ]
+                y2 = middle - self.ground(x_index + 1)*self.steps[VERT] - self.data[x_index + 1][data_index]*self.steps[VERT]
+
+                for i in range(0,data_index):
+                    y1 -= self.data[x_index][i]*self.steps[VERT]
+                    y2 -= self.data[x_index+1][i]*self.steps[VERT]
+
+                if x_index == 0:
+                    self.context.move_to(x1,y1)
+
+                ang1 = self.angles[x_index][data_index+1]
+                ang2 = self.angles[x_index+1][data_index+1] + math.pi
+                self.context.curve_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1),
+                                      x2+p*math.cos(ang2),y2+p*math.sin(ang2),
+                                      x2,y2)
+
+            for x_index in range(len(self.data)-1,0,-1) :
+                x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ]
+                y1 = middle - self.ground(x_index)*self.steps[VERT]
+                x2 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ]
+                y2 = middle - self.ground(x_index - 1)*self.steps[VERT]
+
+                for i in range(0,data_index):
+                    y1 -= self.data[x_index][i]*self.steps[VERT]
+                    y2 -= self.data[x_index-1][i]*self.steps[VERT]
+
+                if x_index == len(self.data)-1:
+                    self.context.line_to(x1,y1+2)
+
+                #revert angles by pi degrees to take the turn back
+                ang1 = self.angles[x_index][data_index] + math.pi
+                ang2 = self.angles[x_index-1][data_index]
+                self.context.curve_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1),
+                                      x2+p*math.cos(ang2),y2+p*math.sin(ang2),
+                                      x2,y2+2)
+
+            self.context.close_path()
+            self.context.fill()
+
+            if False:
+                self.context.move_to(self.borders[HORZ] + 0.5*self.steps[HORZ], middle)
+                for x_index in range(len(self.data)-1) :
+                    x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ]
+                    y1 = middle - self.ground(x_index)*self.steps[VERT] - self.data[x_index][data_index]*self.steps[VERT]
+                    x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ]
+                    y2 = middle - self.ground(x_index + 1)*self.steps[VERT] - self.data[x_index + 1][data_index]*self.steps[VERT]
+
+                    for i in range(0,data_index):
+                        y1 -= self.data[x_index][i]*self.steps[VERT]
+                        y2 -= self.data[x_index+1][i]*self.steps[VERT]
+
+                    ang1 = self.angles[x_index][data_index+1]
+                    ang2 = self.angles[x_index+1][data_index+1] + math.pi
+                    self.context.set_source_rgba(1.0,0.0,0.0)
+                    self.context.arc(x1+p*math.cos(ang1),y1+p*math.sin(ang1),2,0,2*math.pi)
+                    self.context.fill()
+                    self.context.set_source_rgba(0.0,0.0,0.0)
+                    self.context.arc(x2+p*math.cos(ang2),y2+p*math.sin(ang2),2,0,2*math.pi)
+                    self.context.fill()
+                    '''self.context.set_source_rgba(0.0,0.0,0.0,0.3)
+                    self.context.arc(x2,y2,2,0,2*math.pi)
+                    self.context.fill()'''
+                    self.context.move_to(x1,y1)
+                    self.context.line_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1))
+                    self.context.stroke()
+                    self.context.move_to(x2,y2)
+                    self.context.line_to(x2+p*math.cos(ang2),y2+p*math.sin(ang2))
+                    self.context.stroke()
+            if False:
+                for x_index in range(len(self.data)-1,0,-1) :
+                    x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ]
+                    y1 = middle - self.ground(x_index)*self.steps[VERT]
+                    x2 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ]
+                    y2 = middle - self.ground(x_index - 1)*self.steps[VERT]
+
+                    for i in range(0,data_index):
+                        y1 -= self.data[x_index][i]*self.steps[VERT]
+                        y2 -= self.data[x_index-1][i]*self.steps[VERT]
+
+                    #revert angles by pi degrees to take the turn back
+                    ang1 = self.angles[x_index][data_index] + math.pi
+                    ang2 = self.angles[x_index-1][data_index]
+                    self.context.set_source_rgba(0.0,1.0,0.0)
+                    self.context.arc(x1+p*math.cos(ang1),y1+p*math.sin(ang1),2,0,2*math.pi)
+                    self.context.fill()
+                    self.context.set_source_rgba(0.0,0.0,1.0)
+                    self.context.arc(x2+p*math.cos(ang2),y2+p*math.sin(ang2),2,0,2*math.pi)
+                    self.context.fill()
+                    '''self.context.set_source_rgba(0.0,0.0,0.0,0.3)
+                    self.context.arc(x2,y2,2,0,2*math.pi)
+                    self.context.fill()'''
+                    self.context.move_to(x1,y1)
+                    self.context.line_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1))
+                    self.context.stroke()
+                    self.context.move_to(x2,y2)
+                    self.context.line_to(x2+p*math.cos(ang2),y2+p*math.sin(ang2))
+                    self.context.stroke()
+            #break
+
+            #self.context.arc(self.dimensions[HORZ]/2, self.dimensions[VERT]/2,50,0,3*math.pi/2)
+            #self.context.fill()
+
+
+class PiePlot(Plot):
+    def __init__ (self,
+            surface = None,
+            data = None,
+            width = 640,
+            height = 480,
+            background = "white light_gray",
+            gradient = False,
+            shadow = False,
+            colors = None):
+
+        Plot.__init__( self, surface, data, width, height, background, series_colors = colors )
+        self.center = (self.dimensions[HORZ]/2, self.dimensions[VERT]/2)
+        self.total = sum(self.data)
+        self.radius = min(self.dimensions[HORZ]/3,self.dimensions[VERT]/3)
+        self.gradient = gradient
+        self.shadow = shadow
+
+    def load_series(self, data, x_labels=None, y_labels=None, series_colors=None):
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        self.data = sorted(self.data)
+
+    def draw_piece(self, angle, next_angle):
+        self.context.move_to(self.center[0],self.center[1])
+        self.context.line_to(self.center[0] + self.radius*math.cos(angle), self.center[1] + self.radius*math.sin(angle))
+        self.context.arc(self.center[0], self.center[1], self.radius, angle, next_angle)
+        self.context.line_to(self.center[0], self.center[1])
+        self.context.close_path()
+
+    def render(self):
+        self.render_background()
+        self.render_bounding_box()
+        if self.shadow:
+            self.render_shadow()
+        self.render_plot()
+        self.render_series_labels()
+
+    def render_shadow(self):
+        horizontal_shift = 3
+        vertical_shift = 3
+        self.context.set_source_rgba(0, 0, 0, 0.5)
+        self.context.arc(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.radius, 0, 2*math.pi)
+        self.context.fill()
+
+    def render_series_labels(self):
+        angle = 0
+        next_angle = 0
+        x0,y0 = self.center
+        cr = self.context
+        for number,key in enumerate(self.series_labels):
+            next_angle = angle + 2.0*math.pi*self.data[number]/self.total
+            cr.set_source_rgba(*self.series_colors[number][:4])
+            w = cr.text_extents(key)[2]
+            if (angle + next_angle)/2 < math.pi/2 or (angle + next_angle)/2 > 3*math.pi/2:
+                cr.move_to(x0 + (self.radius+10)*math.cos((angle+next_angle)/2), y0 + (self.radius+10)*math.sin((angle+next_angle)/2) )
+            else:
+                cr.move_to(x0 + (self.radius+10)*math.cos((angle+next_angle)/2) - w, y0 + (self.radius+10)*math.sin((angle+next_angle)/2) )
+            cr.show_text(key)
+            angle = next_angle
+
+    def render_plot(self):
+        angle = 0
+        next_angle = 0
+        x0,y0 = self.center
+        cr = self.context
+        for number,series in enumerate(self.data):
+            next_angle = angle + 2.0*math.pi*series/self.total
+            if self.gradient or self.series_colors[number][4] in ('linear','radial'):
+                gradient_color = cairo.RadialGradient(self.center[0], self.center[1], 0, self.center[0], self.center[1], self.radius)
+                gradient_color.add_color_stop_rgba(0.3, *self.series_colors[number][:4])
+                gradient_color.add_color_stop_rgba(1, self.series_colors[number][0]*0.7,
+                                                      self.series_colors[number][1]*0.7,
+                                                      self.series_colors[number][2]*0.7,
+                                                      self.series_colors[number][3])
+                cr.set_source(gradient_color)
+            else:
+                cr.set_source_rgba(*self.series_colors[number][:4])
+
+            self.draw_piece(angle, next_angle)
+            cr.fill()
+
+            cr.set_source_rgba(1.0, 1.0, 1.0)
+            self.draw_piece(angle, next_angle)
+            cr.stroke()
+
+            angle = next_angle
+
+class DonutPlot(PiePlot):
+    def __init__ (self,
+            surface = None,
+            data = None,
+            width = 640,
+            height = 480,
+            background = "white light_gray",
+            gradient = False,
+            shadow = False,
+            colors = None,
+            inner_radius=-1):
+
+        Plot.__init__( self, surface, data, width, height, background, series_colors = colors )
+
+        self.center = ( self.dimensions[HORZ]/2, self.dimensions[VERT]/2 )
+        self.total = sum( self.data )
+        self.radius = min( self.dimensions[HORZ]/3,self.dimensions[VERT]/3 )
+        self.inner_radius = inner_radius*self.radius
+
+        if inner_radius == -1:
+            self.inner_radius = self.radius/3
+
+        self.gradient = gradient
+        self.shadow = shadow
+
+    def draw_piece(self, angle, next_angle):
+        self.context.move_to(self.center[0] + (self.inner_radius)*math.cos(angle), self.center[1] + (self.inner_radius)*math.sin(angle))
+        self.context.line_to(self.center[0] + self.radius*math.cos(angle), self.center[1] + self.radius*math.sin(angle))
+        self.context.arc(self.center[0], self.center[1], self.radius, angle, next_angle)
+        self.context.line_to(self.center[0] + (self.inner_radius)*math.cos(next_angle), self.center[1] + (self.inner_radius)*math.sin(next_angle))
+        self.context.arc_negative(self.center[0], self.center[1], self.inner_radius, next_angle, angle)
+        self.context.close_path()
+
+    def render_shadow(self):
+        horizontal_shift = 3
+        vertical_shift = 3
+        self.context.set_source_rgba(0, 0, 0, 0.5)
+        self.context.arc(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.inner_radius, 0, 2*math.pi)
+        self.context.arc_negative(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.radius, 0, -2*math.pi)
+        self.context.fill()
+
+class GanttChart (Plot) :
+    def __init__(self,
+                 surface = None,
+                 data = None,
+                 width = 640,
+                 height = 480,
+                 x_labels = None,
+                 y_labels = None,
+                 colors = None):
+        self.bounds = {}
+        self.max_value = {}
+        Plot.__init__(self, surface, data, width, height,  x_labels = x_labels, y_labels = y_labels, series_colors = colors)
+
+    def load_series(self, data, x_labels=None, y_labels=None, series_colors=None):
+        Plot.load_series(self, data, x_labels, y_labels, series_colors)
+        self.calc_boundaries()
+
+    def calc_boundaries(self):
+        self.bounds[HORZ] = (0,len(self.data))
+        for item in self.data:
+            if hasattr(item, "__delitem__"):
+                for sub_item in item:
+                    end_pos = max(sub_item)
+            else:
+                end_pos = max(item)
+        self.bounds[VERT] = (0,end_pos)
+
+    def calc_extents(self, direction):
+        self.max_value[direction] = 0
+        if self.labels[direction]:
+            self.max_value[direction] = max(self.context.text_extents(item)[2] for item in self.labels[direction])
+        else:
+            self.max_value[direction] = self.context.text_extents( str(self.bounds[direction][1] + 1) )[2]
+
+    def calc_horz_extents(self):
+        self.calc_extents(HORZ)
+        self.borders[HORZ] = 100 + self.max_value[HORZ]
+
+    def calc_vert_extents(self):
+        self.calc_extents(VERT)
+        self.borders[VERT] = self.dimensions[VERT]/(self.bounds[HORZ][1] + 1)
+
+    def calc_steps(self):
+        self.horizontal_step = (self.dimensions[HORZ] - self.borders[HORZ])/(len(self.labels[VERT]))
+        self.vertical_step = self.borders[VERT]
+
+    def render(self):
+        self.calc_horz_extents()
+        self.calc_vert_extents()
+        self.calc_steps()
+        self.render_background()
+
+        self.render_labels()
+        self.render_grid()
+        self.render_plot()
+
+    def render_background(self):
+        cr = self.context
+        cr.set_source_rgba(255,255,255)
+        cr.rectangle(0,0,self.dimensions[HORZ], self.dimensions[VERT])
+        cr.fill()
+        for number,item in enumerate(self.data):
+            linear = cairo.LinearGradient(self.dimensions[HORZ]/2, self.borders[VERT] + number*self.vertical_step,
+                                          self.dimensions[HORZ]/2, self.borders[VERT] + (number+1)*self.vertical_step)
+            linear.add_color_stop_rgba(0,1.0,1.0,1.0,1.0)
+            linear.add_color_stop_rgba(1.0,0.9,0.9,0.9,1.0)
+            cr.set_source(linear)
+            cr.rectangle(0,self.borders[VERT] + number*self.vertical_step,self.dimensions[HORZ],self.vertical_step)
+            cr.fill()
+
+    def render_grid(self):
+        cr = self.context
+        cr.set_source_rgba(0.7, 0.7, 0.7)
+        cr.set_dash((1,0,0,0,0,0,1))
+        cr.set_line_width(0.5)
+        for number,label in enumerate(self.labels[VERT]):
+            h = cr.text_extents(label)[3]
+            cr.move_to(self.borders[HORZ] + number*self.horizontal_step, self.vertical_step/2 + h)
+            cr.line_to(self.borders[HORZ] + number*self.horizontal_step, self.dimensions[VERT])
+        cr.stroke()
+
+    def render_labels(self):
+        self.context.set_font_size(0.02 * self.dimensions[HORZ])
+
+        self.render_horz_labels()
+        self.render_vert_labels()
+
+    def render_horz_labels(self):
+        cr = self.context
+        labels = self.labels[HORZ]
+        if not labels:
+            labels = [str(i) for i in range(1, self.bounds[HORZ][1] + 1)  ]
+        for number,label in enumerate(labels):
+            if label != None:
+                cr.set_source_rgba(0.5, 0.5, 0.5)
+                w,h = cr.text_extents(label)[2], cr.text_extents(label)[3]
+                cr.move_to(40,self.borders[VERT] + number*self.vertical_step + self.vertical_step/2 + h/2)
+                cr.show_text(label)
+
+    def render_vert_labels(self):
+        cr = self.context
+        labels = self.labels[VERT]
+        if not labels:
+            labels = [str(i) for i in range(1, self.bounds[VERT][1] + 1)  ]
+        for number,label in enumerate(labels):
+            w,h = cr.text_extents(label)[2], cr.text_extents(label)[3]
+            cr.move_to(self.borders[HORZ] + number*self.horizontal_step - w/2, self.vertical_step/2)
+            cr.show_text(label)
+
+    def render_rectangle(self, x0, y0, x1, y1, color):
+        self.draw_shadow(x0, y0, x1, y1)
+        self.draw_rectangle(x0, y0, x1, y1, color)
+
+    def draw_rectangular_shadow(self, gradient, x0, y0, w, h):
+        self.context.set_source(gradient)
+        self.context.rectangle(x0,y0,w,h)
+        self.context.fill()
+
+    def draw_circular_shadow(self, x, y, radius, ang_start, ang_end, mult, shadow):
+        gradient = cairo.RadialGradient(x, y, 0, x, y, 2*radius)
+        gradient.add_color_stop_rgba(0, 0, 0, 0, shadow)
+        gradient.add_color_stop_rgba(1, 0, 0, 0, 0)
+        self.context.set_source(gradient)
+        self.context.move_to(x,y)
+        self.context.line_to(x + mult[0]*radius,y + mult[1]*radius)
+        self.context.arc(x, y, 8, ang_start, ang_end)
+        self.context.line_to(x,y)
+        self.context.close_path()
+        self.context.fill()
+
+    def draw_rectangle(self, x0, y0, x1, y1, color):
+        cr = self.context
+        middle = (x0+x1)/2
+        linear = cairo.LinearGradient(middle,y0,middle,y1)
+        linear.add_color_stop_rgba(0,3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0)
+        linear.add_color_stop_rgba(1,*color[:4])
+        cr.set_source(linear)
+
+        cr.arc(x0+5, y0+5, 5, 0, 2*math.pi)
+        cr.arc(x1-5, y0+5, 5, 0, 2*math.pi)
+        cr.arc(x0+5, y1-5, 5, 0, 2*math.pi)
+        cr.arc(x1-5, y1-5, 5, 0, 2*math.pi)
+        cr.rectangle(x0+5,y0,x1-x0-10,y1-y0)
+        cr.rectangle(x0,y0+5,x1-x0,y1-y0-10)
+        cr.fill()
+
+    def draw_shadow(self, x0, y0, x1, y1):
+        shadow = 0.4
+        h_mid = (x0+x1)/2
+        v_mid = (y0+y1)/2
+        h_linear_1 = cairo.LinearGradient(h_mid,y0-4,h_mid,y0+4)
+        h_linear_2 = cairo.LinearGradient(h_mid,y1-4,h_mid,y1+4)
+        v_linear_1 = cairo.LinearGradient(x0-4,v_mid,x0+4,v_mid)
+        v_linear_2 = cairo.LinearGradient(x1-4,v_mid,x1+4,v_mid)
+
+        h_linear_1.add_color_stop_rgba( 0, 0, 0, 0, 0)
+        h_linear_1.add_color_stop_rgba( 1, 0, 0, 0, shadow)
+        h_linear_2.add_color_stop_rgba( 0, 0, 0, 0, shadow)
+        h_linear_2.add_color_stop_rgba( 1, 0, 0, 0, 0)
+        v_linear_1.add_color_stop_rgba( 0, 0, 0, 0, 0)
+        v_linear_1.add_color_stop_rgba( 1, 0, 0, 0, shadow)
+        v_linear_2.add_color_stop_rgba( 0, 0, 0, 0, shadow)
+        v_linear_2.add_color_stop_rgba( 1, 0, 0, 0, 0)
+
+        self.draw_rectangular_shadow(h_linear_1,x0+4,y0-4,x1-x0-8,8)
+        self.draw_rectangular_shadow(h_linear_2,x0+4,y1-4,x1-x0-8,8)
+        self.draw_rectangular_shadow(v_linear_1,x0-4,y0+4,8,y1-y0-8)
+        self.draw_rectangular_shadow(v_linear_2,x1-4,y0+4,8,y1-y0-8)
+
+        self.draw_circular_shadow(x0+4, y0+4, 4, math.pi, 3*math.pi/2, (-1,0), shadow)
+        self.draw_circular_shadow(x1-4, y0+4, 4, 3*math.pi/2, 2*math.pi, (0,-1), shadow)
+        self.draw_circular_shadow(x0+4, y1-4, 4, math.pi/2, math.pi, (0,1), shadow)
+        self.draw_circular_shadow(x1-4, y1-4, 4, 0, math.pi/2, (1,0), shadow)
+
+    def render_plot(self):
+        for number,item in enumerate(self.data):
+            if hasattr(item, "__delitem__") :
+                for space in item:
+                    self.render_rectangle(self.borders[HORZ] + space[0]*self.horizontal_step,
+                                          self.borders[VERT] + number*self.vertical_step + self.vertical_step/4.0,
+                                          self.borders[HORZ] + space[1]*self.horizontal_step,
+                                          self.borders[VERT] + number*self.vertical_step + 3.0*self.vertical_step/4.0,
+                                          self.series_colors[number])
+            else:
+                space = item
+                self.render_rectangle(self.borders[HORZ] + space[0]*self.horizontal_step,
+                                      self.borders[VERT] + number*self.vertical_step + self.vertical_step/4.0,
+                                      self.borders[HORZ] + space[1]*self.horizontal_step,
+                                      self.borders[VERT] + number*self.vertical_step + 3.0*self.vertical_step/4.0,
+                                      self.series_colors[number])
+
+# Function definition
+
+def scatter_plot(name,
+                 data   = None,
+                 errorx = None,
+                 errory = None,
+                 width  = 640,
+                 height = 480,
+                 background = "white light_gray",
+                 border = 0,
+                 axis = False,
+                 dash = False,
+                 discrete = False,
+                 dots = False,
+                 grid = False,
+                 series_legend = False,
+                 x_labels = None,
+                 y_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 z_bounds = None,
+                 x_title  = None,
+                 y_title  = None,
+                 series_colors = None,
+                 circle_colors = None):
+
+    '''
+        - Function to plot scatter data.
+
+        - Parameters
+
+        data - The values to be ploted might be passed in a two basic:
+               list of points:       [(0,0), (0,1), (0,2)] or [(0,0,1), (0,1,4), (0,2,1)]
+               lists of coordinates: [ [0,0,0] , [0,1,2] ] or [ [0,0,0] , [0,1,2] , [1,4,1] ]
+               Notice that these kinds of that can be grouped in order to form more complex data
+               using lists of lists or dictionaries;
+        series_colors - Define color values for each of the series
+        circle_colors - Define a lower and an upper bound for the circle colors for variable radius
+                        (3 dimensions) series
+    '''
+
+    plot = ScatterPlot( name, data, errorx, errory, width, height, background, border,
+                        axis, dash, discrete, dots, grid, series_legend, x_labels, y_labels,
+                        x_bounds, y_bounds, z_bounds, x_title, y_title, series_colors, circle_colors )
+    plot.render()
+    plot.commit()
+
+def dot_line_plot(name,
+                  data,
+                  width,
+                  height,
+                  background = "white light_gray",
+                  border = 0,
+                  axis = False,
+                  dash = False,
+                  dots = False,
+                  grid = False,
+                  series_legend = False,
+                  x_labels = None,
+                  y_labels = None,
+                  x_bounds = None,
+                  y_bounds = None,
+                  x_title  = None,
+                  y_title  = None,
+                  series_colors = None):
+    '''
+        - Function to plot graphics using dots and lines.
+
+        dot_line_plot (name, data, width, height, background = "white light_gray", border = 0, axis = False, grid = False, x_labels = None, y_labels = None, x_bounds = None, y_bounds = None)
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtim;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        border - Distance in pixels of a square border into which the graphics will be drawn;
+        axis - Whether or not the axis are to be drawn;
+        dash - Boolean or a list or a dictionary of booleans indicating whether or not the associated series should be drawn in dashed mode;
+        dots - Whether or not dots should be drawn on each point;
+        grid - Whether or not the gris is to be drawn;
+        series_legend - Whether or not the legend is to be drawn;
+        x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis;
+        x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted;
+        x_title - Whether or not to plot a title over the x axis.
+        y_title - Whether or not to plot a title over the y axis.
+
+        - Examples of use
+
+        data = [0, 1, 3, 8, 9, 0, 10, 10, 2, 1]
+        CairoPlot.dot_line_plot('teste', data, 400, 300)
+
+        data = { "john" : [10, 10, 10, 10, 30], "mary" : [0, 0, 3, 5, 15], "philip" : [13, 32, 11, 25, 2] }
+        x_labels = ["jan/2008", "feb/2008", "mar/2008", "apr/2008", "may/2008" ]
+        CairoPlot.dot_line_plot( 'test', data, 400, 300, axis = True, grid = True,
+                                  series_legend = True, x_labels = x_labels )
+    '''
+    plot = DotLinePlot( name, data, width, height, background, border,
+                        axis, dash, dots, grid, series_legend, x_labels, y_labels,
+                        x_bounds, y_bounds, x_title, y_title, series_colors )
+    plot.render()
+    plot.commit()
+
+def function_plot(name,
+                  data,
+                  width,
+                  height,
+                  background = "white light_gray",
+                  border = 0,
+                  axis = True,
+                  dots = False,
+                  discrete = False,
+                  grid = False,
+                  series_legend = False,
+                  x_labels = None,
+                  y_labels = None,
+                  x_bounds = None,
+                  y_bounds = None,
+                  x_title  = None,
+                  y_title  = None,
+                  series_colors = None,
+                  step = 1):
+
+    '''
+        - Function to plot functions.
+
+        function_plot(name, data, width, height, background = "white light_gray", border = 0, axis = True, grid = False, dots = False, x_labels = None, y_labels = None, x_bounds = None, y_bounds = None, step = 1, discrete = False)
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtim;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        border - Distance in pixels of a square border into which the graphics will be drawn;
+        axis - Whether or not the axis are to be drawn;
+        grid - Whether or not the gris is to be drawn;
+        dots - Whether or not dots should be shown at each point;
+        x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis;
+        x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted;
+        step - the horizontal distance from one point to the other. The smaller, the smoother the curve will be;
+        discrete - whether or not the function should be plotted in discrete format.
+
+        - Example of use
+
+        data = lambda x : x**2
+        CairoPlot.function_plot('function4', data, 400, 300, grid = True, x_bounds=(-10,10), step = 0.1)
+    '''
+
+    plot = FunctionPlot( name, data, width, height, background, border,
+                         axis, discrete, dots, grid, series_legend, x_labels, y_labels,
+                         x_bounds, y_bounds, x_title, y_title, series_colors, step )
+    plot.render()
+    plot.commit()
+
+def pie_plot( name, data, width, height, background = "white light_gray", gradient = False, shadow = False, colors = None ):
+
+    '''
+        - Function to plot pie graphics.
+
+        pie_plot(name, data, width, height, background = "white light_gray", gradient = False, colors = None)
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtim;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        gradient - Whether or not the pie color will be painted with a gradient;
+        shadow - Whether or not there will be a shadow behind the pie;
+        colors - List of slices colors.
+
+        - Example of use
+
+        teste_data = {"john" : 123, "mary" : 489, "philip" : 890 , "suzy" : 235}
+        CairoPlot.pie_plot("pie_teste", teste_data, 500, 500)
+    '''
+
+    plot = PiePlot( name, data, width, height, background, gradient, shadow, colors )
+    plot.render()
+    plot.commit()
+
+def donut_plot(name, data, width, height, background = "white light_gray", gradient = False, shadow = False, colors = None, inner_radius = -1):
+
+    '''
+        - Function to plot donut graphics.
+
+        donut_plot(name, data, width, height, background = "white light_gray", gradient = False, inner_radius = -1)
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtim;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        shadow - Whether or not there will be a shadow behind the donut;
+        gradient - Whether or not the donut color will be painted with a gradient;
+        colors - List of slices colors;
+        inner_radius - The radius of the donut's inner circle.
+
+        - Example of use
+
+        teste_data = {"john" : 123, "mary" : 489, "philip" : 890 , "suzy" : 235}
+        CairoPlot.donut_plot("donut_teste", teste_data, 500, 500)
+    '''
+
+    plot = DonutPlot(name, data, width, height, background, gradient, shadow, colors, inner_radius)
+    plot.render()
+    plot.commit()
+
+def gantt_chart(name, pieces, width, height, x_labels, y_labels, colors):
+
+    '''
+        - Function to generate Gantt Charts.
+
+        gantt_chart(name, pieces, width, height, x_labels, y_labels, colors):
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtim;
+        pieces - A list defining the spaces to be drawn. The user must pass, for each line, the index of its start and the index of its end. If a line must have two or more spaces, they must be passed inside a list;
+        width, height - Dimensions of the output image;
+        x_labels - A list of names for each of the vertical lines;
+        y_labels - A list of names for each of the horizontal spaces;
+        colors - List containing the colors expected for each of the horizontal spaces
+
+        - Example of use
+
+        pieces = [ (0.5,5.5) , [(0,4),(6,8)] , (5.5,7) , (7,8)]
+        x_labels = [ 'teste01', 'teste02', 'teste03', 'teste04']
+        y_labels = [ '0001', '0002', '0003', '0004', '0005', '0006', '0007', '0008', '0009', '0010' ]
+        colors = [ (1.0, 0.0, 0.0), (1.0, 0.7, 0.0), (1.0, 1.0, 0.0), (0.0, 1.0, 0.0) ]
+        CairoPlot.gantt_chart('gantt_teste', pieces, 600, 300, x_labels, y_labels, colors)
+    '''
+
+    plot = GanttChart(name, pieces, width, height, x_labels, y_labels, colors)
+    plot.render()
+    plot.commit()
+
+def vertical_bar_plot(name,
+                      data,
+                      width,
+                      height,
+                      background = "white light_gray",
+                      border = 0,
+                      display_values = False,
+                      grid = False,
+                      rounded_corners = False,
+                      stack = False,
+                      three_dimension = False,
+                      series_labels = None,
+                      x_labels = None,
+                      y_labels = None,
+                      x_bounds = None,
+                      y_bounds = None,
+                      colors = None):
+    #TODO: Fix docstring for vertical_bar_plot
+    '''
+        - Function to generate vertical Bar Plot Charts.
+
+        bar_plot(name, data, width, height, background, border, grid, rounded_corners, three_dimension,
+                 x_labels, y_labels, x_bounds, y_bounds, colors):
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtime;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        border - Distance in pixels of a square border into which the graphics will be drawn;
+        grid - Whether or not the gris is to be drawn;
+        rounded_corners - Whether or not the bars should have rounded corners;
+        three_dimension - Whether or not the bars should be drawn in pseudo 3D;
+        x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis;
+        x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted;
+        colors - List containing the colors expected for each of the bars.
+
+        - Example of use
+
+        data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        CairoPlot.vertical_bar_plot ('bar2', data, 400, 300, border = 20, grid = True, rounded_corners = False)
+    '''
+
+    plot = VerticalBarPlot(name, data, width, height, background, border,
+                           display_values, grid, rounded_corners, stack, three_dimension,
+                           series_labels, x_labels, y_labels, x_bounds, y_bounds, colors)
+    plot.render()
+    plot.commit()
+
+def horizontal_bar_plot(name,
+                       data,
+                       width,
+                       height,
+                       background = "white light_gray",
+                       border = 0,
+                       display_values = False,
+                       grid = False,
+                       rounded_corners = False,
+                       stack = False,
+                       three_dimension = False,
+                       series_labels = None,
+                       x_labels = None,
+                       y_labels = None,
+                       x_bounds = None,
+                       y_bounds = None,
+                       colors = None):
+
+    #TODO: Fix docstring for horizontal_bar_plot
+    '''
+        - Function to generate Horizontal Bar Plot Charts.
+
+        bar_plot(name, data, width, height, background, border, grid, rounded_corners, three_dimension,
+                 x_labels, y_labels, x_bounds, y_bounds, colors):
+
+        - Parameters
+
+        name - Name of the desired output file, no need to input the .svg as it will be added at runtime;
+        data - The list, list of lists or dictionary holding the data to be plotted;
+        width, height - Dimensions of the output image;
+        background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient.
+                     If left None, a gray to white gradient will be generated;
+        border - Distance in pixels of a square border into which the graphics will be drawn;
+        grid - Whether or not the gris is to be drawn;
+        rounded_corners - Whether or not the bars should have rounded corners;
+        three_dimension - Whether or not the bars should be drawn in pseudo 3D;
+        x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis;
+        x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted;
+        colors - List containing the colors expected for each of the bars.
+
+        - Example of use
+
+        data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        CairoPlot.bar_plot ('bar2', data, 400, 300, border = 20, grid = True, rounded_corners = False)
+    '''
+
+    plot = HorizontalBarPlot(name, data, width, height, background, border,
+                             display_values, grid, rounded_corners, stack, three_dimension,
+                             series_labels, x_labels, y_labels, x_bounds, y_bounds, colors)
+    plot.render()
+    plot.commit()
+
+def stream_chart(name,
+                 data,
+                 width,
+                 height,
+                 background = "white light_gray",
+                 border = 0,
+                 grid = False,
+                 series_legend = None,
+                 x_labels = None,
+                 x_bounds = None,
+                 y_bounds = None,
+                 colors = None):
+
+    #TODO: Fix docstring for horizontal_bar_plot
+    plot = StreamChart(name, data, width, height, background, border,
+                       grid, series_legend, x_labels, x_bounds, y_bounds, colors)
+    plot.render()
+    plot.commit()
diff --git a/prewikka/templates/Stats.tmpl b/prewikka/templates/Stats.tmpl
new file mode 100644
index 0000000..09d6287
--- /dev/null
+++ b/prewikka/templates/Stats.tmpl
@@ -0,0 +1,167 @@
+#extends prewikka.templates.ClassicLayout
+
+#block head_extra_content
+<script type="text/javascript">
+
+#set $fcnt = 0
+#for $chart in $charts
+        var chart_${fcnt} = null;
+        #set $fcnt += 1
+#end for
+
+function changeLinkUnit(unit) {
+        var str = "&timeline_type=" + unit;
+
+        if ( unit == "custom" ) {
+                \$("input[type=text]").each(function() {
+                        str += "&" + \$(this).attr("name") + "=" + \$(this).attr("value");
+                });
+        }
+
+        \$("#topmenu").find("a").each(function() {
+                \$(this).attr("href", \$(this).attr("href") + str);
+        });
+}
+
+
+\$(document).ready(function() {
+        \$("select[name=timeline_type]").change(function() {
+                if ( \$("select[name=timeline_type] option:selected").attr("value") == "custom" )
+                        \$("input[type=text]").each(function() { \$(this).removeAttr("disabled") });
+                else
+                        \$("input[type=text]").each(function() { \$(this).attr("disabled", "disabled") });
+        });
+
+        changeLinkUnit(\$("select[name=timeline_type] option:selected").attr("value"));
+});
+
+</script>
+
+#end block
+
+
+#def gen_std($chart, $map_index)
+<fieldset>
+<legend>$chart.title</legend>
+
+<table width="100%">
+ <tr>
+  <td style="vertical-align: top;">
+
+#filter CleanOutput
+   <img style="padding-top: 2px;" src='$chart.chart.getHref()' alt="Chart"/>
+  </td>
+ </tr>
+</table>
+</fieldset>
+#end filter
+#end def
+
+
+
+#block main_content
+#filter CleanOutput
+#set $fcnt = 0
+#set $map_index = 0;
+
+<h2>$period</h2>
+
+#if $current_filter
+<h2>Filter: $current_filter</h2>
+#end if
+
+<br/><br/>
+
+<table style="width: 100%;">
+#end filter
+
+#for $chart in $charts
+ <tr><td id="td_$fcnt">
+        $gen_std($chart, $map_index)
+<br/><br/>
+ </td></tr>
+
+#set $fcnt = $fcnt + 1
+#set $map_index += 1
+#end for
+
+</table>
+#end block
+
+
+
+
+#def layout_start_hook
+<form action="?" method="get">
+#for $name, $value in $hidden_parameters
+  <input type="hidden" name="$name" value="$value"/>
+#end for
+#end def
+
+
+#def layout_end_hook
+</form>
+#end def
+
+
+#block menu_extra_content
+#filter CleanOutput
+
+<table id="timeline">
+  <tr>
+    <th>$_("Filter:")</th>
+    <td colspan="2">
+     <select name="filter" class="filter_control_select">
+          <option value="">&nbsp;</option>
+        #for $fltr in $filters
+          #if $fltr == $current_filter
+            #set $selected = "selected=\"selected\""
+          #else
+            #set $selected = ""
+          #end if
+          <option value="$fltr" $selected>$fltr</option>
+        #end for
+     </select>
+    </td>
+  </tr>
+  <tr>
+    <th>$_("Time:")</th>
+    <td colspan="2">
+      <select name="timeline_type">
+        <option value="hour" $timeline_hour_selected>$_("Hour")</option>
+        <option value="day" $timeline_day_selected>$_("Day")</option>
+        <option value="month" $timeline_month_selected>$_("Month")</option>
+        <option value="custom" $timeline_custom_selected>$_("Custom")</option>
+      </select>
+    </td>
+  </tr>
+  <tr>
+    <th>$_("From:")</th>
+    <td colspan="2"><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if#  size="4" name="from_year" value="$from_year"/><b>/</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="from_month" value="$from_month"/><b>/</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if#  size="2" name="from_day" value="$from_day"/></td>
+  </tr>
+  <tr>
+    <th></th>
+    <td colspan="2"><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="from_hour" value="$from_hour"/><b>:</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="from_min" value="$from_min"/></td>
+  </tr>
+  <tr>
+    <th>$_("To:")</th>
+    <td colspan="2"><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="4" name="to_year" value="$to_year"/><b>/</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="to_month" value="$to_month"/><b>/</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="to_day" value="$to_day"/></td>
+  </tr>
+  <tr>
+    <th></th>
+    <td colspan="2"><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="to_hour" value="$to_hour"/><b>:</b><input type="text" #if not $timeline_custom_selected# disabled="disabled" #end if# size="2" name="to_min" value="$to_min"/></td>
+  </tr>
+
+<tr>
+ <td colspan="3" style="text-align: center">
+
+<br style="line-height: 5px;" />
+
+<div>
+ <input id="form_apply" type="submit" name="apply" value="$_("Apply")" />&nbsp;<input type="submit" name="_save" value="$_("Save")" />
+</div>
+
+</table>
+
+#end filter
+#end block
diff --git a/prewikka/utils.py b/prewikka/utils.py
index 21d384d..820f16b 100644
--- a/prewikka/utils.py
+++ b/prewikka/utils.py
@@ -195,3 +195,29 @@ def toUnicode(text):
         pass
 
     return unicode(text, "ISO-8859-1")
+
+
+
+class OrderedDict(dict):
+    def __init__(self, *args, **kwargs):
+        dict.__init__(self, *args, **kwargs)
+        self._order = dict.keys(self)
+
+    def __setitem__(self, key, value):
+        dict.__setitem__(self, key, value)
+        if key in self._order:
+            self._order.remove(key)
+        self._order.append(key)
+
+    def __delitem__(self, key):
+        dict.__delitem__(self, key)
+        self._order.remove(key)
+
+    def keys(self):
+        return self._order[:]
+
+    def items(self):
+        return [(key,self[key]) for key in self._order]
+
+    def values(self):
+        return [ self[key] for key in self._order]
diff --git a/prewikka/views/__init__.py b/prewikka/views/__init__.py
index a750a49..2fe4d87 100644
--- a/prewikka/views/__init__.py
+++ b/prewikka/views/__init__.py
@@ -20,7 +20,7 @@
 
 from prewikka.views import \
      messagelisting, alertlisting, heartbeatlisting, messagesummary, messagedetails, sensor, \
-     commands, filter, usermanagement, misc
+     commands, filter, usermanagement, stats, misc
 
 objects = alertlisting.AlertListing(), \
           alertlisting.CorrelationAlertListing(), \
@@ -36,7 +36,9 @@ objects = alertlisting.AlertListing(), \
           usermanagement.UserListing(), \
           usermanagement.UserAddForm(), usermanagement.UserDelete(), \
           usermanagement.UserSettingsDisplay(), usermanagement.UserSettingsModify(), usermanagement.UserSettingsAdd(), \
-          misc.About()
+          misc.About(), \
+          stats.StatsSummary(), stats.CategorizationStats(), stats.SourceStats(), stats.TargetStats(), stats.AnalyzerStats(), \
+          stats.TimelineStats()
 
 
 
@@ -48,6 +50,14 @@ events_section = (_("Events"), [(_("Alerts"), ["alert_listing", "sensor_alert_li
 agents_section = (_("Agents"), [(_("Agents"), ["sensor_listing", "sensor_messages_delete", "heartbeat_analyze"]),
                              (_("Heartbeats"), ["heartbeat_listing", "sensor_heartbeat_listing"] )])
 
+stats_section = (_("Statistics"), [
+                           (_("Categorizations"), ["stats_categorization" ]),
+                           (_("Sources"), [ "stats_source" ]),
+                           (_("Targets"), [ "stats_target" ]),
+                           (_("Analyzers"), [ "stats_analyzer" ]),
+                           (_("Timeline"), [ "stats_timeline" ])])
+
+
 settings_section = (_("Settings"), [
                                     (_("Filters"), ["filter_edition"]),
                                     
diff --git a/prewikka/views/stats.py b/prewikka/views/stats.py
new file mode 100644
index 0000000..feb038a
--- /dev/null
+++ b/prewikka/views/stats.py
@@ -0,0 +1,850 @@
+# Copyright (C) 2005-2009 PreludeIDS Technologies. All Rights Reserved.
+# Author: Nicolas Delon <[email protected]>
+# Author: Yoann Vandoorselaere <[email protected]>
+#
+# This file is part of the Prewikka program.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+import sys
+import time
+import copy
+import urllib
+import datetime
+
+from prewikka import User, view, Chart, utils, resolve
+
+try:
+    import GeoIP
+    geoip = GeoIP.new(GeoIP.GEOIP_MEMORY_CACHE)
+except:
+    geoip = None
+
+
+DEFAULT_WIDTH = 800
+DEFAULT_HEIGHT = 450
+
+
+class DistributionStatsParameters(view.Parameters):
+    def register(self):
+        self.optional("timeline_type", str, default="hour", save=True)
+        self.optional("from_year", int, save=True)
+        self.optional("from_month", int, save=True)
+        self.optional("from_day", int, save=True)
+        self.optional("from_hour", int, save=True)
+        self.optional("from_min", int, save=True)
+        self.optional("to_year", int, save=True)
+        self.optional("to_month", int, save=True)
+        self.optional("to_day", int, save=True)
+        self.optional("to_hour", int, save=True)
+        self.optional("to_min", int, save=True)
+        self.optional("filter", str, save=True)
+        self.optional("idmef_filter", str)
+        self.optional("apply", str)
+
+    def normalize(self, view_name, user):
+        do_save = self.has_key("_save")
+
+        view.Parameters.normalize(self, view_name, user)
+
+        if do_save and not self.has_key("filter"):
+            user.delConfigValue(view_name, "filter")
+
+
+class StatsSummary(view.View):
+    view_name = "stats_summary"
+    view_template = "StatsSummary"
+    view_permission = [ ]
+    view_parameters = view.Parameters
+
+    def render(self):
+        pass
+
+
+
+
+class DistributionStats(view.View):
+    view_template = "Stats"
+    view_permissions = [ User.PERM_IDMEF_VIEW ]
+    view_parameters = DistributionStatsParameters
+
+    def _getNameFromMap(self, name, names_and_colors):
+        if names_and_colors.has_key(name):
+            return names_and_colors[name][0]
+
+        return name
+
+    def _namesAndColors2ColorMap(self, names_and_colors):
+        d = utils.OrderedDict()
+        for name, color in names_and_colors.values():
+            d[name] = color
+
+        return d
+
+    def _getBaseURL(self):
+        start = long(time.mktime(self._period_start))
+
+        if self.parameters["timeline_type"] in ("month", "day", "hour"):
+            unit = self.parameters["timeline_type"]
+            value = 1
+        else:
+            delta = long(time.mktime(self._period_end)) - start
+            if delta > 3600:
+                unit = "day"
+                value = delta / (24 * 3600) + 1
+            else:
+                unit = "hour"
+                value = delta / 3600 + 1
+
+        filter_str = ""
+        if self.parameters.has_key("filter"):
+            filter_str = "&amp;" + urllib.urlencode({"filter": self.parameters["filter"]})
+
+        return utils.create_link("alert_listing", { "timeline_unit": unit,
+                                                    "timeline_value": value,
+                                                    "timeline_start": start }) + filter_str
+
+
+    def _addDistributionChart(self, title, value_name, width, height, path, criteria, sub_url_handler, limit=-1, dns=False, names_and_colors={}):
+        base_url = self._getBaseURL()
+        chart = { "title": title, "value_name": value_name, "data": [ ] }
+
+        distribution = Chart.DistributionChart(width, height)
+        if names_and_colors:
+            distribution.setColorMap(self._namesAndColors2ColorMap(names_and_colors))
+
+        chart["chart"] = distribution
+        chart["render"] = (distribution, title, base_url)
+
+        results = self.env.idmef_db.getValues([ path + "/group_by", "count(%s)/order_desc" % path ],
+                                              criteria=criteria + [ path ], limit=limit)
+        if results:
+            total = reduce(lambda x, y: x + y, [ count for value, count in results ])
+            chart["total"] = total
+            for value, count in results:
+                if dns:
+                    v = resolve.AddressResolve(value)
+                else:
+                    v = self._getNameFromMap(value, names_and_colors)
+
+                chart["data"].append((v, base_url + "&amp;" + sub_url_handler(value), count, "%.1f" % (count / float(total) * 100)))
+                distribution.addLabelValuePair(v, count, base_url + "&amp;" + sub_url_handler(value))
+
+        distribution.render(title, user = self.user.login)
+        self.dataset["charts"].append(chart)
+
+    def _processTimeCriteria(self):
+        now = time.time()
+        self._period_end = time.localtime(now)
+
+        if self.parameters["timeline_type"] == "hour":
+            self.dataset["timeline_hour_selected"] = "selected=\"selected\""
+            self._period_start = time.localtime(now - 3600)
+
+        elif self.parameters["timeline_type"] == "day":
+            self.dataset["timeline_day_selected"] = "selected=\"selected\""
+            tm = time.localtime(now - 24 * 3600)
+            self._period_start = time.localtime(now - 24 * 3600)
+
+        elif self.parameters["timeline_type"] == "month":
+            self.dataset["timeline_month_selected"] = "selected=\"selected\""
+            tm = list(time.localtime(now))
+            tm[1] -= 1
+            self._period_start = time.localtime(time.mktime(tm))
+
+        else:
+            self.dataset["timeline_custom_selected"] = "selected=\"selected\""
+            self._period_start = time.struct_time((self.parameters["from_year"], self.parameters["from_month"],
+                                                   self.parameters["from_day"], self.parameters["from_hour"],
+                                                   self.parameters["from_min"], 0, 0, 0, -1))
+            self._period_end = time.struct_time((self.parameters["to_year"], self.parameters["to_month"],
+                                                 self.parameters["to_day"], self.parameters["to_hour"],
+                                                 self.parameters["to_min"], 0, 0, 0, -1))
+
+        self.dataset["from_year"] = "%.4d" % self._period_start.tm_year
+        self.dataset["from_month"] = "%.2d" % self._period_start.tm_mon
+        self.dataset["from_day"] = "%.2d" % self._period_start.tm_mday
+        self.dataset["from_hour"] = "%.2d" % self._period_start.tm_hour
+        self.dataset["from_min"] = "%.2d" % self._period_start.tm_min
+
+        self.dataset["to_year"] = "%.4d" % self._period_end.tm_year
+        self.dataset["to_month"] = "%.2d" % self._period_end.tm_mon
+        self.dataset["to_day"] = "%.2d" % self._period_end.tm_mday
+        self.dataset["to_hour"] = "%.2d" % self._period_end.tm_hour
+        self.dataset["to_min"] = "%.2d" % self._period_end.tm_min
+
+        criteria = [ "alert.create_time >= '%d-%d-%d %d:%d:%d' && alert.create_time < '%d-%d-%d %d:%d:%d'" % \
+                     (self._period_start.tm_year, self._period_start.tm_mon, self._period_start.tm_mday,
+                      self._period_start.tm_hour, self._period_start.tm_min, self._period_start.tm_sec,
+                      self._period_end.tm_year, self._period_end.tm_mon, self._period_end.tm_mday,
+                      self._period_end.tm_hour, self._period_end.tm_min, self._period_end.tm_sec) ]
+
+        return criteria
+
+    def _processFilterCriteria(self):
+        c = [ ]
+        if self.parameters.has_key("idmef_filter"):
+            c.append(unicode(self.parameters["idmef_filter"]))
+
+        self.dataset["current_filter"] = self.parameters.get("filter", "")
+        if self.parameters.has_key("filter"):
+            f = self.env.db.getAlertFilter(self.user.login, self.parameters["filter"])
+            if f:
+                c.append(unicode(f))
+
+        return c
+
+    def _processCriteria(self):
+        criteria = [ ]
+        criteria += self._processTimeCriteria()
+        criteria += self._processFilterCriteria()
+
+        return criteria
+
+    def render(self):
+        self.dataset["hidden_parameters"] = [ ("view", self.view_name) ]
+        self.dataset["charts"] = [ ]
+        self.dataset["filters"] = self.env.db.getAlertFilterNames(self.user.login)
+        self.dataset["timeline_hour_selected"] = ""
+        self.dataset["timeline_day_selected"] = ""
+        self.dataset["timeline_month_selected"] = ""
+        self.dataset["timeline_custom_selected"] = ""
+
+    def _setPeriod(self):
+        tm = time.localtime()
+
+        period = "from %s/%s/%s %s:%s to %s/%s/%s %s:%s" % \
+                 (self.dataset["from_year"], self.dataset["from_month"], self.dataset["from_day"],
+                  self.dataset["from_hour"], self.dataset["from_min"],
+                  self.dataset["to_year"], self.dataset["to_month"], self.dataset["to_day"],
+                  self.dataset["to_hour"], self.dataset["to_min"])
+
+        if self.parameters["timeline_type"] == "month":
+            self.dataset["period"] = "Period: current month (%s)" % period
+        elif self.parameters["timeline_type"] == "day":
+            self.dataset["period"] = "Period: today (%s)" % period
+        elif self.parameters["timeline_type"] == "hour":
+            self.dataset["period"] = "Period: current hour (%s)" % period
+        else:
+            self.dataset["period"] = "Period: %s" % period
+
+
+
+class GenericTimelineStats(DistributionStats):
+    def _getAlertCount(self, criteria, link):
+        d = {}
+
+        results = self.env.idmef_db.getValues(self._getSelection(), criteria)
+        if not results:
+            return d
+
+        for name, count in results:
+            d[self._getNameFromMap(name, self._names_and_colors)] = (count, link)
+
+        return d
+
+    def _newTimeline(self, width, height, stacked=False):
+        if stacked:
+            timeline = Chart.StackedTimelineChart(width, height)
+        else:
+            timeline = Chart.TimelineChart(width, height)
+
+        if not self.parameters.has_key("idmef_filter"):
+            timeline.enableMultipleValues(self._namesAndColors2ColorMap(self._names_and_colors))
+
+        return timeline
+
+    def _getTimeCrit(self, start, step):
+        tm1 = start #time.localtime(start)
+        tm2 = start+step #time.localtime(start + step)
+
+        c = [ "alert.create_time >= '%d-%d-%d %d:%d:%d' && alert.create_time < '%d-%d-%d %d:%d:%d'" % \
+              (tm1.year, tm1.month, tm1.day, tm1.hour, tm1.minute, tm1.second,
+               tm2.year, tm2.month, tm2.day, tm2.hour, tm2.minute, tm2.second) ]
+
+        return c
+
+    def _getStep(self, type, absolute=False):
+        start = None
+
+        if type == "custom":
+                type = self.getCustomUnit()
+                start = datetime.datetime(*self._period_start[:6])
+                end = datetime.datetime(*self._period_end[:6])
+        else:
+                end = datetime.datetime.today()
+
+        if type == "hour":
+                if not start:
+                        start = end - datetime.timedelta(minutes=60)
+                step = datetime.timedelta(minutes=1)
+                label_tm_index = "%Hh%M"
+                zoom_view = "alert_listing"
+                timeline_type = "min"
+                timeline_unit = ""
+
+        elif type == "day":
+                if not start:
+                        start = end - datetime.timedelta(hours=24)
+                step = datetime.timedelta(hours=1)
+                label_tm_index = "%d/%Hh"
+                zoom_view = "stats_timeline"
+                timeline_type = "custom"
+                timeline_unit = "hour"
+
+        elif type == "month":
+                if not start:
+                        start = end - datetime.timedelta(days=31)
+                step = datetime.timedelta(days=1)
+                label_tm_index = "%m/%d"
+                zoom_view = "stats_timeline"
+                timeline_type = "custom"
+                timeline_unit = "day"
+
+        elif type == "year":
+                if not start:
+                        start = end - datetime.timedelta(days=365)
+                step = datetime.timedelta(days=31)
+                label_tm_index = "%m/%d"
+                zoom_view = "stats_timeline"
+                timeline_type = "custom"
+                timeline_unit = "day"
+
+        return start, end, step, label_tm_index, zoom_view, timeline_type, timeline_unit
+
+
+    def _setTimelineZoom(self, base_parameters, start, end):
+        #tm = time.localtime(start)
+        base_parameters["from_year"] = start.year
+        base_parameters["from_month"] = start.month
+        base_parameters["from_day"] = start.day
+        base_parameters["from_hour"] = start.hour
+        base_parameters["from_min"] = start.minute
+
+        #tm = time.localtime(end)
+        base_parameters["to_year"] = end.year
+        base_parameters["to_month"] = end.month
+        base_parameters["to_day"] = end.day
+        base_parameters["to_hour"] = end.hour
+        base_parameters["to_min"] = end.minute
+
+    def _generateTimeline(self, width, height):
+        start, end, step, format, zoom_view, timeline_type, timeline_time = self._getStep(self.parameters["timeline_type"])
+        timeline = self._newTimeline(width, height)
+
+        if timeline_type != "custom":
+            base_parameters = { "timeline_unit": "min" }
+        else:
+            base_parameters = { "timeline_type": timeline_type }
+
+        self.dataset["timeline_user_type"] = self.parameters.get("timeline_type")
+
+        while start < end:
+            c = self._getTimeCrit(start, step) + self._criteria
+
+            if timeline_type != "custom":
+                base_parameters["timeline_start"] = long(time.mktime(start.timetuple())) #long(start)
+            else:
+                self._setTimelineZoom(base_parameters, start, start + step)
+
+            link = utils.create_link(zoom_view, base_parameters)
+            count = self._getAlertCount(c, link)
+            label = start.strftime(format)
+
+            start += step
+            timeline.addLabelValuePair(label, count, link)
+
+        return timeline
+
+    def getCustomUnit(self):
+        start = long(time.mktime(self._period_start))
+        delta = long(time.mktime(self._period_end)) - start
+
+        if delta > 86400:
+            unit = "month"
+        elif delta > 3600:
+            unit = "day"
+        else:
+            unit = "hour"
+
+        return unit
+
+    def _getSelection(self):
+        return ("%s/group_by" % self._path, "count(%s)/order_desc" % self._path)
+
+    def _addTimelineChart(self, title, value_name, width, height, path, criteria, limit=-1, names_and_colors={}, allow_stacked=False, value_callback=None, zoom_type=None):
+        self._path = path
+        self._limit = limit
+        self._value_callback = value_callback
+        self._criteria = criteria
+        self._zoom_type = zoom_type
+        self._names_and_colors = names_and_colors
+
+        base_url = self._getBaseURL()
+        chart = { "title": title, "value_name": value_name, "data": [ ] }
+
+        if limit > 0:
+            res = self.env.idmef_db.getValues(self._getSelection(), criteria = criteria, limit=self._limit)
+
+            c = ""
+            for name, count in res:
+                if c:
+                    c += " || "
+                c += "%s = '%s'" % (self._path, utils.escape_criteria(name))
+
+            if c:
+                criteria.append(c)
+
+        timeline = self._generateTimeline(width, height)
+        timeline.render(title, user = self.user.login)
+
+        chart["chart"] = timeline
+        self.dataset["charts"].append(chart)
+        self.dataset["zoom"] = self.parameters.get("zoom", None)
+
+
+class CategorizationStats(DistributionStats, GenericTimelineStats):
+    view_name = "stats_categorization"
+
+    def _renderClassifications(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Classifications"), _("Classification"), width, height,
+                                   "alert.classification.text",
+                                   criteria,
+                                   lambda value: utils.urlencode({"classification_object_0": "alert.classification.text",
+                                                                  "classification_value_0": value}),
+                                   10)
+
+    def _renderReferences(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Alert References"), _("References"), width, height,
+                                   "alert.classification.reference.name",
+                                   criteria,
+                                   lambda value: utils.urlencode({"classification_object_0": "alert.classification.reference.name",
+                                                                  "classification_value_0": value}),
+                                   10)
+
+    def _renderImpactSeverities(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        _severity_maps = utils.OrderedDict()
+        _severity_maps["high"] = (_("High"), Chart.RED_STD)
+        _severity_maps["medium"] = (_("Medium"), Chart.ORANGE_STD)
+        _severity_maps["low"] = (_("Low"), Chart.GREEN_STD)
+        _severity_maps["info"] = (_("Informational"), Chart.BLUE_STD)
+        _severity_maps[None] = (_("N/a"), "000000")
+
+        self._addDistributionChart(_("Severities"), _("Severity"), width, height,
+                                   "alert.assessment.impact.severity",
+                                   criteria,
+                                   lambda value: utils.urlencode({"classification_object_0": "alert.assessment.impact.severity",
+                                                                  "classification_value_0": value}), names_and_colors=_severity_maps)
+
+    def _renderImpactTypes(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Alert Impact Types"), _("Impact Types"), width, height,
+                                   "alert.assessment.impact.type",
+                                   criteria,
+                                   lambda value: utils.urlencode({"classification_object_0": "alert.assessment.impact.type",
+                                                                  "classification_value_0": value}))
+
+    def _renderClassificationsTrend(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        GenericTimelineStats._addTimelineChart(self, "Top 10 Classifications Trend", None, width, height,
+                                               "alert.classification.text", criteria, limit = 10, zoom_type="classifications_trend")
+
+    def render(self):
+        DistributionStats.render(self)
+
+        self.dataset["title"] = "Alerts categorization"
+
+        criteria = self._processCriteria()
+
+        self._setPeriod()
+
+        self._renderClassificationsTrend(criteria)
+        self._renderClassifications(criteria)
+        self._renderReferences(criteria)
+        self._renderImpactSeverities(criteria)
+        self._renderImpactTypes(criteria)
+
+
+
+class SourceStats(DistributionStats, GenericTimelineStats):
+    view_name = "stats_source"
+
+    def _countryDistributionChart(self, criteria, width, height):
+
+        base_url = self._getBaseURL()
+        distribution = Chart.WorldChart(width, height)
+
+        chart = { "title": _("Top Source Country"), "value_name": _("Country"), "data": [ ], "chart": distribution }
+
+        results = self.env.idmef_db.getValues([ "alert.source.node.address.address/group_by",
+                                                "count(alert.source.node.address.address)"],
+                                              criteria=criteria, limit=-1)
+
+        if results:
+            total = reduce(lambda x, y: x + y, [ count for value, count in results ])
+            chart["total"] = total
+
+            merge = { }
+            for value, count in results:
+                if not value:
+                        continue
+
+                if distribution.needCountryCode():
+                    nvalue = geoip.country_code_by_addr(value)
+                else:
+                    nvalue = geoip.country_name_by_addr(value)
+                if not nvalue:
+                    nvalue = "Unknown"
+
+                if not merge.has_key(nvalue):
+                   url_index = 0
+                   merge[nvalue] = (0, 0, nvalue, "")
+                else:
+                   url_index = merge[nvalue][1]
+
+                encode = "&amp;" + utils.urlencode({"source_object_%d" % url_index: "alert.source.node.address.address",
+                                                    "source_value_%d" % url_index: value})
+                merge[nvalue] = (merge[nvalue][0] + count, url_index + 1, nvalue, merge[nvalue][3] + encode)
+
+            s = [ t[1] for t in merge.items() ]
+            s.sort()
+            s.reverse()
+            results = s #[0:10]
+
+            for item in results:
+                distribution.addLabelValuePair(item[2], item[0])
+                chart["data"].append((item[2], base_url + item[3], item[0], "%.1f" % (item[0] / float(total) * 100)))
+
+        distribution.render("Top 10 Source Country", user = self.user.login)
+        chart["filename"] = distribution.getHref()
+        chart["type"] = distribution.getType()
+        self.dataset["charts"].append(chart)
+
+
+    def _renderCountry(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        if geoip is not None:
+            self._countryDistributionChart(criteria, width, height)
+
+    def _renderAddresses(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Source Addresses"), _("Address"), width, height,
+                                   "alert.source.node.address.address",
+                                   criteria,
+                                   lambda value: utils.urlencode({"source_object_0": "alert.source.node.address.address",
+                                                                   "source_value_0": value}),
+                                   10, dns=True)
+
+    def _renderUsers(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Source Users"), _("User"), width, height,
+                                   "alert.source.user.user_id.name",
+                                   criteria,
+                                   lambda value: utils.urlencode({"source_object_0": "alert.source.user.user_id.name",
+                                                                   "source_value_0": value}),
+                                   10)
+
+    def _renderSourcesTrend(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        GenericTimelineStats._addTimelineChart(self, "Top 10 Sources Trend", None, DEFAULT_WIDTH, DEFAULT_HEIGHT,
+                                               "alert.source.node.address.address", criteria, 10, zoom_type="sources_trend")
+
+    def render(self):
+        DistributionStats.render(self)
+
+        self.dataset["title"] = "Top Alert Sources"
+
+        criteria = self._processCriteria()
+
+        self._setPeriod()
+
+        self._renderCountry(criteria)
+        self._renderSourcesTrend(criteria)
+        self._renderAddresses(criteria)
+        self._renderUsers(criteria)
+
+        resolve.process(self.env.dns_max_delay)
+
+class TargetStats(DistributionStats):
+    view_name = "stats_target"
+
+    def _renderPorts(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        base_url = self._getBaseURL()
+        title = "Top 10 Targeted Ports"
+        distribution = Chart.DistributionChart(width, height)
+        chart = { "title": title, "value_name": "Port", "data": [ ], "chart": distribution }
+
+        criteria = criteria[:] + [ "(alert.target.service.iana_protocol_number == 6  ||"
+                                   "alert.target.service.iana_protocol_number == 17  ||"
+                                   "alert.target.service.iana_protocol_name =* 'tcp' ||"
+                                   "alert.target.service.iana_protocol_name =* 'udp' ||"
+                                   "alert.target.service.protocol =* 'udp'           ||"
+                                   "alert.target.service.protocol =* 'tcp')" ]
+
+        results = self.env.idmef_db.getValues([ "alert.target.service.port/group_by",
+                                                "alert.target.service.iana_protocol_number/group_by",
+                                                "alert.target.service.iana_protocol_name/group_by",
+                                                "alert.target.service.protocol/group_by",
+                                                "count(alert.target.service.port)/order_desc" ],
+                                              criteria=criteria, limit=10)
+        if not results:
+            return
+
+        merge = { "TCP": { }, "UDP": { } }
+
+        for port, iana_protocol_number, iana_protocol_name, protocol, count in results:
+            if not port:
+                continue
+
+            if iana_protocol_number:
+                protocol = utils.protocol_number_to_name(iana_protocol_number)
+
+            elif iana_protocol_name:
+                protocol = iana_protocol_name
+
+            protocol = protocol.upper()
+            if not merge.has_key(protocol):
+                continue
+
+            if not merge[protocol].has_key(port):
+                merge[protocol][port] = 0
+
+            merge[protocol][port] += count
+
+        results = [ ]
+
+        for protocol, values in merge.items():
+            for port, count in values.items():
+                results.append((port, protocol, count))
+
+        results.sort(lambda x, y: int(y[2] - x[2]))
+
+        total = reduce(lambda x, y: x + y, [ count for port, protocol, count in results ])
+        chart["total"] = total
+
+        for port, protocol, count in results:
+            name = "%d (%s)" % (port, protocol)
+            chart["data"].append((name, base_url + "&amp;" + "target_object_0=alert.target.service.port&amp;target_value_0=%d" % port,
+                                  count, "%.1f" % (count / float(total) * 100)))
+
+            distribution.addLabelValuePair(name, count, base_url + "&amp;" + "target_object_0=alert.target.service.port&amp;target_value_0=%d" % port)
+
+        distribution.render(title, user = self.user.login)
+        self.dataset["charts"].append(chart)
+
+    def _renderAddresses(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Targeted Addresses"), _("Address"), width, height,
+                                   "alert.target.node.address.address",
+                                   criteria,
+                                   lambda value: utils.urlencode({"target_object_0": "alert.target.node.address.address",
+                                                                   "target_value_0": value}),
+                                   10, dns=True)
+
+    def _renderUsers(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Targeted Users"), _("User"), width, height,
+                                   "alert.target.user.user_id.name",
+                                   criteria,
+                                   lambda value: utils.urlencode({"target_object_0": "alert.target.user.user_id.name",
+                                                                  "target_value_0": value}),
+                                   10)
+
+    def render(self):
+        DistributionStats.render(self)
+
+        self.dataset["title"] = "Top Alert Targets"
+
+        criteria = self._processCriteria()
+
+        self._setPeriod()
+
+        self._renderAddresses(criteria)
+        self._renderPorts(criteria)
+        self._renderUsers(criteria)
+
+        resolve.process(self.env.dns_max_delay)
+
+
+class AnalyzerStats(DistributionStats, GenericTimelineStats):
+    view_name = "stats_analyzer"
+
+    def _renderAnalyzers(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        base_url = self._getBaseURL()
+        title = "Top 10 analyzers"
+        distribution = Chart.DistributionChart(width, height)
+        chart = { "title": title, "value_name": "Analyzer", "data": [ ], "chart": distribution }
+
+        results = self.env.idmef_db.getValues([ "alert.analyzer(-1).name/group_by", "alert.analyzer(-1).node.name/group_by",
+                                                "count(alert.analyzer(-1).name)/order_desc" ],
+                                              criteria=criteria + [ "alert.analyzer(-1).name" ], limit=10)
+        if results:
+            total = reduce(lambda x, y: x + y, [ row[-1] for row in results ])
+            chart["total"] = total
+            for analyzer_name, node_name, count in results:
+                if node_name:
+                    value = "%s on %s"  % (analyzer_name, node_name)
+                else:
+                    value = analyzer_name
+
+                analyzer_criteria = utils.urlencode({ "analyzer_object_0": "alert.analyzer(-1).name",
+                                                       "analyzer_value_0": analyzer_name })
+
+                chart["data"].append((value,
+                                      base_url + "&amp;" + analyzer_criteria,
+                                      count,
+                                      "%.1f" % (count / float(total) * 100)))
+
+                distribution.addLabelValuePair(value, count, base_url + "&amp;" + analyzer_criteria)
+
+            distribution.render(title, user = self.user.login)
+            self.dataset["charts"].append(chart)
+
+    def _renderModels(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Analyzer Models"), _("Model"), width, height,
+                                   "alert.analyzer(-1).model",
+                                   criteria,
+                                   lambda value: utils.urlencode({ "analyzer_object_0": "alert.analyzer(-1).model",
+                                                                    "analyzer_value_0": value }),
+                                   10)
+
+    def _renderClasses(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Analyzer Classes"), _("Class"), width, height,
+                                   "alert.analyzer(-1).class",
+                                   criteria,
+                                   lambda value: utils.urlencode({ "analyzer_object_0": "alert.analyzer(-1).class",
+                                                                    "analyzer_value_0": value }),
+                                   10)
+
+    def _renderNodeAddresses(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Top 10 Analyzer Node Addresses"), _("Address"), width, height,
+                                   "alert.analyzer(-1).node.address.address",
+                                   criteria,
+                                   lambda value: utils.urlencode({ "analyzer_object_0": "alert.analyzer(-1).node.address.address",
+                                                                    "analyzer_value_0": value }),
+                                   10)
+
+    def _renderNodeLocations(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        self._addDistributionChart(_("Analyzer Locations"), _("Location"), width, height,
+                                   "alert.analyzer(-1).node.location",
+                                   criteria,
+                                   lambda value: utils.urlencode({ "analyzer_object_0": "alert.analyzer(-1).node.location",
+                                                                    "analyzer_value_0": value }))
+
+    def _renderClassesTrend(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        GenericTimelineStats._addTimelineChart(self, "Top 10 Analyzer Classes Trend", None, width, height,
+                                               "alert.analyzer(-1).class", criteria, limit = 10, zoom_type="analyzer_classes_trend")
+
+    def render(self):
+        DistributionStats.render(self)
+
+        self.dataset["title"] = "Top Analyzers"
+
+        criteria = self._processCriteria()
+
+        self._setPeriod()
+
+        self._renderClassesTrend(criteria)
+        self._renderAnalyzers(criteria)
+        self._renderModels(criteria)
+        self._renderClasses(criteria)
+        self._renderNodeAddresses(criteria)
+        self._renderNodeLocations(criteria)
+
+
+
+class RiskStats(GenericTimelineStats):
+    def _renderRisk(self):
+        tmap = { "hour": "day", "day": "month", "month": "year", "custom": "custom" }
+        start, end, step, format, zoom_view, timeline_type, timeline_time = self._getStep(tmap[self.parameters["timeline_type"]])
+
+        i = 0
+        total = 0
+        total_score = 0.0
+        score_table = { "info": 0.5, "low": 1, "n/a": 1, "medium": 1.5, "high": 2 }
+
+        while start < end:
+                c = self._getTimeCrit(start, step)
+                res = self.env.idmef_db.getValues([ "alert.assessment.impact.severity/group_by", "count(alert.create_time)/order_desc" ], criteria=c)
+
+                gscore = 0.0
+                for severity, count in res:
+                    total += count
+                    score = score_table[severity or "n/a"] * count
+                    gscore += score
+
+                start += step
+                total_score += gscore
+
+                if gscore or total > 0:
+                    i += 1
+
+        avg = share = slice = 0
+        if total_score:
+                avg = float(total_score) / i
+                share = 100 / float(avg * 2)
+                slice = (avg * 2) / 3
+
+        gauge = Chart.FlashVerticalGaugeChart()
+        gauge.addLabelValuePair("Low", 0, Chart.GREEN_STD)
+        gauge.addLabelValuePair("Moderate", 50, Chart.YELLOW_STD)
+        gauge.addLabelValuePair("High", 100, Chart.RED_STD)
+        gauge.setPointer(min(gscore * share, 100), 0)
+
+        gauge.render("Risk Evaluation", user = self.user.login)
+        self.dataset["charts"].append({"chart": gauge})
+
+
+class TimelineStats(GenericTimelineStats, AnalyzerStats, CategorizationStats, SourceStats):
+    view_name = "stats_timeline"
+
+    def _renderTimelineChart(self, criteria, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
+        _severity_maps = utils.OrderedDict()
+        _severity_maps["high"] = (_("High"), Chart.RED_STD)
+        _severity_maps["medium"] = (_("Medium"), Chart.ORANGE_STD)
+        _severity_maps["low"] = (_("Low"), Chart.GREEN_STD)
+        _severity_maps["info"] = (_("Informational"), Chart.BLUE_STD)
+        _severity_maps[None] = (_("N/a"), "000000")
+
+        GenericTimelineStats._addTimelineChart(self, "Timeline", None, width, height,
+                                               "alert.assessment.impact.severity", criteria, names_and_colors=_severity_maps)
+
+    def render(self):
+        DistributionStats.render(self)
+        self.dataset["title"] = "Timeline"
+
+        criteria = self._processCriteria()
+        self._setPeriod()
+
+        type = self.parameters.get("type", None)
+        if type == "analyzer_classes_trend":
+                AnalyzerStats._renderClassesTrend(self, criteria)
+
+        elif type == "classifications_trend":
+                CategorizationStats._renderClassificationsTrend(self, criteria)
+
+        elif type == "sources_trend":
+                SourceStats._renderSourcesTrend(self, criteria)
+        else:
+                self._renderTimelineChart(criteria)
+
+
+
+
+class AnalyzerTrendStats(GenericTimelineStats, AnalyzerStats):
+    view_name = "stats_analyzer_trend"
+
+    def render(self):
+        DistributionStats.render(self)
+        self.dataset["title"] = "Timeline"
+
+        criteria = self._processCriteria()
+        self._setPeriod()
+
+        title = "Top 10 Analyzer Trend " + self.dataset["period"]
+        AnalyzerStats._renderClassesTrend(self, criteria, width, height)
+
diff --git a/setup.py b/setup.py
index cf351b5..686ce23 100644
--- a/setup.py
+++ b/setup.py
@@ -189,6 +189,7 @@ class my_install(install):
         self.install_conf()
         self.init_siteconfig()
         install.run(self)
+        self.mkpath(self.prefix + "/share/prewikka/htdocs/generated_images")
 
         for dir in ("/",
                     "share/prewikka",

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