Changeset 109 for trunk/src/line.py

Timestamp:

10/27/08 16:49:58 (4 years ago)

Author:

lgs

Message:

Some refactoring and support for negative values in line and bar charts. Inspired by Nicolas patch

Files:

• trunk/src/line.py (modified) (3 diffs)

trunk/src/line.py

@@ -17 +17 @@
 
 from pycha.chart import Chart
-from pycha.color import hex2rgb, clamp
+from pycha.color import hex2rgb
 
 class LineChart(Chart):
@@ -47 +47 @@
             if self.options.shouldFill:
                 # Go to the (0,0) coordinate to start drawing the area
-                cx.move_to(self.area.x, self.area.y + self.area.h)
+                #cx.move_to(self.area.x, self.area.y + self.area.h)
+                cx.move_to(self.area.x,
+                           self.area.y + (1.0 - self.area.origin) * self.area.h)
 
             for point in self.points:
@@ -65 +67 @@
             if self.options.shouldFill:
                 # Close the path to the start point
-                cx.line_to(lastX * self.area.w + self.area.x,
-                           self.area.h + self.area.y)
-                cx.line_to(self.area.x, self.area.y + self.area.h)
+                y = (1.0 - self.area.origin) * self.area.h + self.area.y
+                cx.line_to(lastX * self.area.w + self.area.x, y)
+                cx.line_to(self.area.x, y)
                 cx.close_path()
             else: