[reportlab-users] Underline String in Graphics

[Nathalie Steinmetz]

Hi Robin,

thanks for your response! And for the example, I wasn’t aware about XPreformatted… 

Unfortunately I am not able to use the XPreformatted object - I am not drawing directly on the canvas, but am creating a Drawing object to which I add shapes (Rect, Path, String) from the graphics module (from reportlab.graphics.shapes import Drawing, Rect, Path, String). Those String shape objects don’t seem to allow for much formatting, and all I can add as text is plain text. I can do bold and italic by using a bold or italic font, but that approach doesn’t work for underline.

Sorry for not having been clear enough about this before! Do you know of any better way to underline such strings, instead of drawing a line underneath?

Thanks,
Nathalie



> On Mar 26, 2015, at 4:04 AM, Robin Becker <robin at reportlab.com> wrote:
> 
> On 25/03/2015 20:43, Nathalie Steinmetz wrote:
>> Hi,
>> 
>> I realize that I can underline text within Paragraphs using <u></u>. For text within Graphics, in String objects, the recommendation seems to have been to draw a Line underneath the String.
>> 
>> Is this still the way to go, or is there an easier way to have underlined text in graphics?
>> 
> 
> Hi Nathalie,
> 
> nothing prevents you from using Paragraph / XPreformatted to do your own drawing of complex strings. It's a bit more difficult, but see the end of this program for an example
> 
> ###############################################################################
> from reportlab.pdfbase.ttfonts import TTFont
> from reportlab.pdfbase.pdfmetrics import registerFont
> from reportlab.pdfgen.canvas import Canvas
> from reportlab.lib.colors import green, pink, lightblue, red
> from reportlab.platypus import XPreformatted
> from reportlab.lib.styles import getSampleStyleSheet
> registerFont(TTFont("Vera", "Vera.ttf"))
> registerFont(TTFont("VeraBI", "VeraBI.ttf"))
> 
> c = Canvas('helloworld.pdf', pagesize=(300,500))
> c.setFont('Vera', 10)
> c.drawString(100, 200, u'Hello World')
> 
> c.showPage()
> c.setPageSize((400,600))
> c.setFont('Vera', 20)
> c.setFillColor(green)
> c.drawString(100, 300, u'Hello World')
> 
> c.showPage()
> c.setPageSize((400,600))
> 
> sss = getSampleStyleSheet()
> normal = sss['Normal']
> xpre = XPreformatted('<font color="red">Red</font> <u>underliney</u>',normal)
> 
> w,h = xpre.wrap(0,0)
> 
> c.saveState()
> #draw lines to show what's going on
> c.setDash(2,2)
> c.setStrokeColor(green)
> c.setLineWidth(0.01)
> c.line(72,100,72+w,100)
> c.setStrokeColor(red)
> c.line(72,100+h,72+w,100+h)
> c.restoreState()
> xpre.drawOn(c,72,100)
> 
> c.save()
> ###############################################################################
> 
> the main code is
> xpre = XPreformatted('<font color="red">Red</font> <u>underliney</u>',normal)
> w,h = xpre.wrap(0x7fffffff,0x7fffffff)
> xpre.drawOn(c,72,100)
> 
> ie set up the styled text object, wrap and obtain the size. Note that the wrap(0,0) trick will likely not work with Paragraphs as they need a width to do their actual wrapping. The XPreformatted returns the max of the available width and the required width.
> 
> 
>> Thanks!
>> Nathalie
>> 
>> 
>> --
>> Nathalie Steinmetz
>> Senior Software Engineer
>> 
>> Jolt Labs
> 
> 
> -- 
> Robin Becker
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