Re: Setting TrueType fonts in table cell

I am pretty sure you are right - deriving my own Drawing class from
Flowable looks like the way to go.
Your example shows me what I need to implement in this class(and how).

Thanks for your help! Now I also know what sections in the manual to study
further and not to be deterred
by the comments in the manual  ;-)


Class Flowable:

Abstract base class for things to be drawn. Key concepts:

1. It knows its size

2. It draws in its own coordinate system (this requires the base API to
provide a translate() function.

def drawOn(self, canvas, x, y, _sW=0):

Tell it to draw itself on the canvas. Do not override


/Nils



On Mon, Oct 14, 2013 at 12:30 PM, Robin Becker <[email protected]> wrote:

> Hi Nils,
>
> On 13/10/2013 07:42, Nils Smeds wrote:>> I think the error is that you are
> re-using the canvas at the end of the
> .............
>
> > When starting this project all I had as input was the users guide which
> in
> > all examples I read refers to the SimpleDocTemplate. I'd be happy to use
> a
> > more suitable setup if I could find references as to how to use a
> > "ComplexDocTemplate".  Would it be possible to get some references to
> more
> > complex layouts and what is provided by the existing Templates (and how
> to
> > create your own if that is what it takes) on the FAQ page or in the use's
> > guide?
>
> Form the above I think you just need the ability to add drawn material of
> your own in a flowing document.
>
> A simple way to accomplish that would be to define a Flowable subclass
> that allows you to do whatever you want to a page with canvas commands, but
> uses the Flowable api. In the code below that's what the DrawingStuff class
> does.
>
> ##############################**##############################**
> ##################
> import sys
>
> from reportlab.lib.pagesizes import letter, A4
> from reportlab.pdfbase import pdfmetrics
> from reportlab.pdfbase.ttfonts import TTFont
> from reportlab.pdfbase.pdfmetrics import registerFontFamily
>
> from reportlab.lib.colors import black, red, blue, green
> from reportlab.lib.styles import getSampleStyleSheet
> from reportlab.platypus import Table,TableStyle
> from reportlab.platypus import Paragraph, SimpleDocTemplate, PageBreak,
> Flowable, FrameBreak, PageBegin
>
> # My Liberation fonts are installed in:  /usr/share/fonts/liberation
> pdfmetrics.registerFont(**TTFont('SansR', '/windows/fonts/arial.ttf'))
> pdfmetrics.registerFont(**TTFont('SansB', '/windows/fonts/arialbd.ttf'))
> pdfmetrics.registerFont(**TTFont('SansI', '/windows/fonts/ariali.ttf'))
> pdfmetrics.registerFont(**TTFont('SansBI', '/windows/fonts/arialbi.ttf'))
> registerFontFamily('Sans',**normal='SansR',bold='SansB',**
> italic='SansI',boldItalic='**SansBI')
>
> def d0(canv):
>     canv.setStrokeColor(red)
>     canv.setFillColor(red)
>     canv.setFont("Courier", 20)
>     canv.drawString(72, 144, 'C TALLY HOOO!!! c')
>     canv.setFont("SansB", 20)
>     canv.drawString(72, 360, 'C TALLY HOOO!!!  c')
>
> def d1(canv):
>     canv.setStrokeColor(green)
>     canv.setFillColor(green)
>     canv.setFont("Courier", 20)
>     canv.drawString(144, 144, 'C TALLY HOOO!!! c')
>     canv.setFont("SansB", 20)
>     canv.drawString(144, 360, 'C TALLY HOOO!!!  c')
>
> def d2(canv):
>     canv.setStrokeColor(blue)
>     canv.setFillColor(blue)
>     canv.setFont("Courier", 20)
>     canv.drawString(72, 360, 'C TALLY HOOO!!! c')
>     canv.setFont("SansB", 20)
>     canv.drawString(360, 144, 'C TALLY HOOO!!!  c')
>
> class DrawingStuff(Flowable):
>     '''
>     Flowable that allows arbitrary canvas operations
>     DrawingStuff(myFunc)
>         argument myFunc is a callable that will be passed the canvas at
> draw time.
>     '''
>     _ZEROSIZE=1
>     _SPACETRANSFER = True
>     def __init__(self,myDrawingFunc):
>         self._myDrawingFunc = myDrawingFunc
>
>     def __repr__(self):
>         return "%s(%r)" % (self.__class__.__name__,self.**_myDrawingFunc)
>
>     def wrap(self,aW,aH):
>         return 0,0
>
>     def drawOn(self,canvas,x,y,_sW=0):
>         canvas.saveState()
>         self._myDrawingFunc(canvas)
>         canvas.restoreState()
>
> filename='mytest.pdf'
>
> page_width, page_height = A4
> doc = SimpleDocTemplate(filename,**pagesize=A4)
> story=[]
> story_add=story.append
>
> styles = getSampleStyleSheet()
> styleH = styles['Heading1']
> styleN = styles['Normal']
>
> base_style=[('GRID', (0,0), (-1,-1), 1, (0,0,0)),
>                 ('FONT', (1,0), (1,-1), 'SansR'),
>                 ('BOX', (0,0), (-1,-1), 3, (0,0,0)),
>                 ('ALIGN',(1,0),(1,-1),'RIGHT')**,
>                 ('ALIGN',(3,0),(3,-1),'RIGHT')**,
>                 ('VALIGN',(0,0),(-1,-1),'TOP')**]
>
> data=[('COL1','COL2','COL3','**COL4','COL5')]
> data.append(['COL1','COL2','**COL3','COL4','COL5'])
> data.append(['COL1','COL2','**COL3','COL4','COL5'])
> data.append(['COL1','COL2','**COL3','COL4','COL5'])
> t=Table(data,style=base_style)
> story_add(t)
>
> #generate some psecial pages
> story_add(PageBreak())
> story_add(DrawingStuff(d0))
> story_add(PageBreak())
> story_add(DrawingStuff(d1))
> story_add(PageBreak())
> story_add(DrawingStuff(d2))
>
> doc.build(story)
> ##############################**##############################**
> ##################
> --
> Robin Becker
>