[reportlab-users] SVG and EPS

[Robin Becker]

Rob Schall wrote:
> One more question for anyone who might know how svg or eps would work 
> with report magic.
> 
> My boss would like to reduce the size of the pdf. The only real area to 
> do this, is to remove the jpg logo from the pdf and replace it with an 
> EPS or SVG logo. By replace, I simply mean future pdfs to be created.
> 
> I can't find much on the forums or in the documentation on how/if this 
> might be possible. Right now, I have the graphic in eps format, but I 
> assume with some work, I could get it into svg format.
> 
> Can reportlab handle this?
> Thanks again!


Well if you have the curves then the logo can be drawn directly by reportlab's 
canvas operations. It usually depends on whether you're brave enough to go 
playing with the curves lines etc etc. We don't embed eps or svg into pdf, but 
both formats are pretty readable. SVG drawings should probably be more parseable 
as the operations are well known. With eps there's aleays the chance that the 
postscript defines strange operators etc etc.


Typically I end up with something that looks like this

class MyLogo(Drawing):
     _attrMap = AttrMap(BASE=Drawing,
             logoFillColor = AttrMapValue(isColorOrNone),
             logoStrokeColor = AttrMapValue(isColorOrNone),
             logoStrokeWidth = AttrMapValue(isNumber),
             backgroundColor = AttrMapValue(isColorOrNone),
             ops = AttrMapValue(isListOfNumbersOrNone),
             pts = AttrMapValue(isListOfNumbersOrNone),
             sizeScale = AttrMapValue(isNumber),
             )
     ops=[0,2,2,1,1,1,2,1,1,2,1,2,2,2,1,1,1,2,2,2,2,2,2,1,2,2,2,2,
         2,2,3,0,2,1,1,1,1,2,3,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
         1,1,1,1,1,1,1,1,1,1,1,3,0,1,1,1,3,0,1,1,1,1,1,1,1,1,1,1,3,
         0,1,1,1,1,1,1,1,1,1,1,3,0,2,1,1,1,1,1,2,1,1,1,1,1,1,1,1,3,
         0,2,2,2,2,2,3,0,2,2,2,2,2,2,3,0,1,1,1,2,2,2,1,1,1,1,1,1,1,
         1,1,1,1,2,2,2,2,1,1,1,1,3]
     pts = [ 188.519,219.814,196.405,219.814,203.756,217.962,209.370,216.478,
             197.476,218.565,179.026,215.539,169.497,208.030,169.497,166.822,
             204.480,166.822,204.480,213.696,212.046,212.318,217.763,209.254,
             219.730,206.889,219.730,166.822,228.869,166.822,221.717,158.753,
             208.334,153.831,196.801,155.646,196.801,153.962,196.801,153.962,
             196.798,153.962,196.801,153.962,230.05......
            ]
     def __init__(self,width=417.279,height=287.154,*args,**kw):
         Drawing.__init__(self,width,height,*args,**kw)
         self._w0 = width
         self._h0 = height
         self.backgroundColor = None
         self.logoStrokeColor = None
         self.sizeScale = self.logoStrokeWidth = 1
         self.logoFillColor = colors.red

         def getContents(self):
 
self.add(Path(self.pts,self.ops,fillColor=self.logoFillColor,strokeWidth=self.logoStrokeWidth,strokeColor 
= self.logoStrokeColor or self.logoFillColor),'P')
         if self.backgroundColor:
             self.background = 
Rect(0,0,self._w0,self._h0,fillColor=self.backgroundColor,strokeWidth=self.logoStrokeWidth,strokeColor=self.backgroundColor)
         return Drawing.getContents(self)

The MyLogo class can be added as a flowable Drawing or used in some more comples 
way to draw onto a canvas.
-- 
Robin Becker