Issue with HtmlEasyPrinting on Debian and Ubuntu

Jean-Paul Verhulst <[email protected]> Tue, 27 Feb 2018 00:16:41 -0800 (PST)

Newsgroups	gmane.comp.python.wxpython.devel
Message-ID	<[email protected]>

The script "htmleasyprinting.py" (see attachment) works very well with 
windows 10 but not with Linux.
It uses "table" and "tr" tags with "bgcolor".  The preview is good but the 
printing is unusable (see PDF in attachment).

Test OK with Windows 10, wxPython 4.0.1, Python 3.6.4
Issue with Debian 9, Debian 10, Ubuntu 17.10, Raspbian Stretch - wxPython 
4.0.1 GTK2

More problems with GTK3:

   - Preview with black background and non-visible header
   - Scrollbar errors if we reduce the size of the preview window 
   (htmleasyprinting.py:3987): Gtk-WARNING **: Negative content width -9 
   (allocation 25, extents 17x17) while allocating gadget (node button, owner 
   GtkButton)
   - Same unusable printing as with GTK2


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htmleasyprinting.py (text/x-python, 2.6 KB)

#!/usr/bin/env python3

import wx
import wx.html


class Frame(wx.Frame):

    def __init__(self, parent, size, title):
        super().__init__(parent, size=size, title=title)
        panel = wx.Panel(self)

        self.htmlwindow = wx.html.HtmlWindow(panel)
        self.preview_button = wx.Button(panel, label="Preview")
        self.print_button = wx.Button(panel, label="Print")

        self.ep = wx.html.HtmlEasyPrinting(
            name="Test - HtmlEasyPrinting", parentWindow=self)

        self.header = """\
<table cellspacing="0" cellpadding="0" width="100%"><tr>
<td width="75%" align="center"><b>@TITLE@</b></td>
<td align="right" width="25%">PAGE @PAGENUM@/@PAGESCNT@</td>
</tr></table>
"""
        self.body = """\
<html><body>
<p>Table with borders</p>
<table bgcolor="grey" cellspacing="3" cellpadding="3" width="100%">
<tr bgcolor="#ffff99"><td><font color="red"><b>AAA</b></font></td><td>BBB</td><td>CCC</td></tr>
<tr bgcolor="white"><td><span style="color:green";"><b>DDD</b></span></td><td>EEE</td><td>FFF</td></tr>
</table>
<p>Table without border</p>
<table cellspacing="3" cellpadding="3" width="100%">
<tr bgcolor="#ffff99"><td><font color="red"><b>GGG</b></font></td><td>HHH</td><td>III</td></tr>
<tr><td><span style="color:green";"><b>JJJ</b></span></td><td>KKK</td><td>LLL</td></tr>
</table>
</body></html>
"""
        self.htmlwindow.SetPage(self.body)

        sizer = wx.BoxSizer(wx.VERTICAL)
        button_sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(self.htmlwindow, 1, wx.EXPAND)
        button_sizer.Add(self.preview_button, 1, wx.EXPAND)
        button_sizer.Add(self.print_button, 1, wx.EXPAND)
        sizer.Add(button_sizer, 0, wx.EXPAND)
        panel.SetSizer(sizer)
        self.SetSizeHints(200, 200)

        self.Bind(wx.EVT_BUTTON, self.button)

    def button(self, evt):
        self.ep.SetHeader(self.header)
        # pd = self.ep.GetPrintData()
        # pd.SetOrientation(wx.PORTRAIT)
        # pd.SetPaperId(wx.PAPER_A4)
        # pd.SetColour(False)
        # psd = self.ep.GetPageSetupData()
        # psd.SetMarginTopLeft((10, 10))
        # psd.SetMarginBottomRight((10, 10))
        if evt.GetEventObject() is self.preview_button:
            self.ep.PreviewText(self.body, basepath="")
        else:
            self.ep.PrintText(self.body, basepath="")


class App(wx.App):

    def OnInit(self):
        frame = Frame(
            parent=None, size=(400, 300), title="HtmlEasyPrinting")
        frame.Show()
        self.SetTopWindow(frame)
        return True

    def OnExit(self):
        return super().OnExit()


if __name__ == "__main__":
    app = App(True)
    app.MainLoop()

htmleasyprinting-win-output.pdf (application/pdf, 18.6 KB) - not displayed

htmleasyprinting-linux-output.pdf (application/pdf, 31.8 KB) - not displayed