Add support for lines and connector shapes

[scanny]

No description provided.

[oscartprom]

Seconded. This would be an extremely helpful feature.

[oscartprom]

I have python code that generates connector shapes. If it would help you with this library, I can send you a copy.

[scanny]

Sure, want to fork and then send a pull request? I'll be happy to take a look :)

[gridgazer]

Checking on this one as we need to be able to draw a polygon on a slide (Outlining areas of a picture) and I don't see a way to do this without it.

Thanks!

[scanny]

If a normal-ish polygon will do the trick, you could pick a suitable AutoShape (rectangle, circle, pentagon, etc.) and set its fill to no-fill and set its outline color and width to suit. That would certainly be a lot less work that forming it from individual lines. Note that with adjustment handles you can exercise quite a bit of control over shapes that have them.

Lines/connectors are not on the immediate roadmap, although they are relatively high up in the backlog sequence/priority.

[thomasysliu]

Something like this will work

from pptx import Presentation
from pptx.util import *

from lxml import objectify
from pptx.oxml.ns import nsdecls



title_only_slide_layout = prs.slide_layouts[5]
slide = prs.slides.add_slide(title_only_slide_layout)
shapes = slide.shapes
self._add_line_sp(shapes,2284189,1701577,0,3959671)

def _add_line_sp(self,shapes, x, y, cx, cy):
    line_tmpl = """
<p:sp %s>
<p:nvSpPr>
  <p:cNvPr id="%s" name="%s"/>
  <p:cNvSpPr>
    <a:spLocks noChangeShapeType="1"/>
  </p:cNvSpPr>
  <p:nvPr/>
</p:nvSpPr>
<p:spPr bwMode="auto">
  <a:xfrm>
    <a:off x="%s" y="%s"/>
    <a:ext cx="%s" cy="%s"/>
  </a:xfrm>
  <a:prstGeom prst="line">
    <a:avLst/>
  </a:prstGeom>
  <a:noFill/>
  <a:ln w="25560" cap="sq">
    <a:solidFill>
      <a:srgbClr val="0000FF"/>
    </a:solidFill>
    <a:round/>
    <a:headEnd type="triangle" w="med" len="med"/>
    <a:tailEnd type="triangle" w="med" len="med"/>
  </a:ln>
</p:spPr>
</p:sp>

    """ % (nsdecls('p', 'a'), '%d', '%s', '%d', '%d', '%d', '%d')
    id_ = shapes._next_shape_id
    name = 'Line %d' % (id_-1)
    #x     = 2284189
    #y     = 1701577
    #cx    = 0
    #cy    = 3959671
    line_xml = line_tmpl %(id_, name, x, y, cx, cy)
    line_obj = objectify.fromstring(line_xml)
    shapes._spTree.append(line_obj)

[johnrfrank]

@scanny @thomasysliu are you interested in working on this? I'd be interested in funding it. We have a requirement for loading a networkx json file into a .pptx slide showing nodes and edges. The nodes would be images/icons provided by references in the JSON.

[scanny]

@johnrfrank Yes, we have a mechanism for sponsored features. If you contact me at the email on my profile page https://github.com/scanny if you like and we can set up a quick call.

[scanny]

Added in release v0.6.1 on Oct 9, 2016.