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Add alignement grid to svg sheets to aid posterprint layout #53

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Add alignement grid to svg sheets to aid posterprint layout #53

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39 changes: 35 additions & 4 deletions svg.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
## {{{ http://code.activestate.com/recipes/325823/ (r1)
#!/usr/bin/env python
"""\
SVG.py - Construct/display SVG scenes.
Expand All @@ -23,8 +22,12 @@ def add(self,item): self.items.append(item)
def strarray(self):
var = ["<?xml version=\"1.0\"?>\n",
'<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="%dmm" width="%dmm" >\n' % (self.height,self.width),
' <g style="fill-opacity:1.0; stroke:black; stroke-width:1;">\n'
' <g style="fill-opacity:1.0; stroke:darkgrey; stroke-width:0.5;">\n'
]
grid = Grid(self.width,self.height)
var += grid.strarray()
var += [" </g>\n",
' <g style="fill-opacity:1.0; stroke:black; stroke-width:1;">\n']
for item in self.items: var += item.strarray()
var += [" </g>\n</svg>\n"]
return var
Expand All @@ -43,6 +46,34 @@ def display(self):
os.system("%s" % (self.svgname))
return

class Grid:
def __init__(self,width,height,spacing=20):
self.width = width
self.height = height
return
def strarray(self):
w = self.width
h = self.height
return [' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,0,w,h),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,h,w,0),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,h*0.3333,w*0.3333,0),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,h*0.6667,w*0.6667,0),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,h*0.3333,w*0.6667,h),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(0,h*0.6667,w*0.3333,h),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(w*0.3333,h,w,h*0.3333),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(w*0.3333,0,w,h*0.6667),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(w*0.6667,0,w,h*0.3333),
' <line x1="%fmm" y1="%fmm" x2="%fmm" y2="%fmm" />\n' %
(w*0.6667,h,w,h*0.6667)]

class Line:
def __init__(self,start,end):
Expand Down Expand Up @@ -108,5 +139,5 @@ def test():
scene.display()
return

if __name__ == '__main__': test()
## end of http://code.activestate.com/recipes/325823/ }}}
if __name__ == '__main__':
test()