[billreminder] Chart widget creates a dynamic image in PNG format now.

[Og B. Maciel <ogmaciel src gnome org>]

commit dbbcdc23bdc33e7fb6ebb89c9b86a766c59260fe
Author: Og B. Maciel <ogmaciel gnome org>
Date:   Tue Nov 24 14:40:23 2009 -0500

    Chart widget creates a dynamic image in PNG format now.

 src/gui/widgets/chartwidget.py |   16 +++++++++++++---
 1 files changed, 13 insertions(+), 3 deletions(-)
---
diff --git a/src/gui/widgets/chartwidget.py b/src/gui/widgets/chartwidget.py
index dcb306c..1257253 100644
--- a/src/gui/widgets/chartwidget.py
+++ b/src/gui/widgets/chartwidget.py
@@ -6,6 +6,7 @@ import gtk
 
 import sys
 import cairo
+import StringIO
 from pycha import bar
 
 class ChartWidget(gtk.HBox):
@@ -71,7 +72,16 @@ class ChartWidget(gtk.HBox):
         chart.render()
 
         #TODO: the widget's Image object should take a dynamically created image object
-        surface.write_to_png('foobar.png')
+        buf = StringIO.StringIO()
+        surface.write_to_png(buf)
+
+        # Move pointer to start of buffer
+        buf.seek(0)
+        loader = gtk.gdk.PixbufLoader()
+        loader.write(buf.getvalue())
+        loader.close()
+
+        self.chart.set_from_pixbuf(loader.get_pixbuf())
 
 class BasicWindow:
 
@@ -98,8 +108,8 @@ class BasicWindow:
         self.window.add(place)
         self.window.show_all()
 
-        #data = [(None, 150.0), (u'House', 132.55000000000001)]
-        #self.chart.plot(data)
+        data = (('None', 150.0), (u'House', 132.55))
+        self.chart.plot(data)
 
 
 def main():