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  • Committer: Curtis Hovey
  • Date: 2011-09-04 03:53:20 UTC
  • mfrom: (738 trunk)
  • mto: This revision was merged to the branch mainline in revision 741.
  • Revision ID: sinzui.is@verizon.net-20110904035320-5abg7as2ki1r8w88
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branchview/graphcell.py
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from gi.repository import GObject
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from gi.repository import Pango
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from gi.repository import PangoCairo
 
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from gi.repository import cairo
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# Cairo constants are not exported yet. These are taken from documentation.
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CAIRO_FILL_RULE_EVEN_ODD = 1
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# Macro from  Pango header.
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def PANGO_PIXELS(d):
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    return (d + 512) / 1000
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class CellRendererGraph(Gtk.CellRendererPixbuf):
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    """Cell renderer for directed graph.
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        else:
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            raise AttributeError, "no such property: '%s'" % property.name
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    def do_get_property(self, property):
 
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        """Get properties from GObject properties."""
 
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        if property.name == "node":
 
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            return self.node
 
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        elif property.name == "tags":
 
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            return self.tags
 
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        elif property.name == "in-lines":
 
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            return self.in_lines
 
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        elif property.name == "out-lines":
 
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            print "get outlines"
 
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            return self.out_lines
 
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        else:
 
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            raise AttributeError, "no such property: '%s'" % property.name
 
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    def box_size(self, widget):
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        """Calculate box size based on widget's font.
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            pango_ctx = widget.get_pango_context()
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            font_desc = widget.get_style().font_desc
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            metrics = pango_ctx.get_metrics(font_desc, None)
 
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            def PANGO_PIXELS(d):
 
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                # Macro from  Pango header.
 
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                return (d + 512) / 1000
 
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            ascent = PANGO_PIXELS(metrics.get_ascent())
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            descent = PANGO_PIXELS(metrics.get_descent())
 
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            self._box_size = ascent + descent + 6
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            return self._box_size
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        ctx.set_source_rgb(red, green, blue)
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    def do_activate(event, widget, path, bg_area, cell_area, flags):
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        """Renderers cannot be activated; always return True."""
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        return True
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    def do_editing_started(event, widget, path, fb_area, cell_area, flags):
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        """Renderers cannot be edited; always return None."""
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        return None
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    def do_get_size(self, widget, cell_area):