[reportlab-users] FW: linkAnnotate and linkRect, relative to transforms : Bug Report for trunk?

[Ian Sparks]

This one didn't get through last time I sent it... So here goes again.

 

I use linkRect() a lot and I also do a lot of scaling and translating.
When I updated to trunk all my linkRects were off by a considerable
margin from where I expected them to be. Today I finally tracked down
the issue. It's the parameter "relative" that linkRect now takes. Here's
an example program that shows the problem. I think the fix is to make
the default relative value for a linkRect be = 1/True. 

 

Basically, a linkRect() with relative = True will obey the
scaling/translations (which is what I want!) but linkAbsolute I think is
meant to be a link related to the default page and so passes relative=0
to linkRect().

 

Can we have :

 

    def linkRect(self, contents, destinationname, Rect=None,
addtopage=1, name=None, relative=1,

            thickness=0, color=None, dashArray=None, **kw):

 

In canvas.py please? Alternatively I'll have to change all my calls to
linkRect().

 

Finally. I thought scaling and transforms were supposed to be additive?
My last example I scale by 50% then move 5 inches up. Doesn't look like
anything is scaled anymore?

 

Test prog :

 

from reportlab.pdfgen import canvas

from reportlab.lib.units import inch, cm

from reportlab.lib import colors

 

def makePage(canv,title):

    canv.drawString(1*inch,3*inch,title)

    canv.linkAbsolute("test1", "t1",(inch, inch, 6*inch,
2*inch),Border='[1 1 1]')

    canv.linkRect('test2','t1',[50,50,100,100],Border='[1 1
1]',relative=1)

    canv.showPage()

 

if __name__ == '__main__':

 

    canv = canvas.Canvas('test.pdf')

    canv.bookmarkPage('t1')

    canv.setFont('Courier',20)

 

    #Test page

    makePage(canv,'Normal')

 

    #Make 50% smaller        

    canv.scale(0.5,0.5)

    makePage(canv,'50% Scaled')

 

    #Move origin up 5 inches

    canv.translate(0,5*inch)

    makePage(canv,'Scaled and moved 5 inches up')

 

    canv.save()




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