[pitivi] curve.py: shift curve upward

[Edward Hervey <edwardrv src gnome org>]

commit 6c090303c4c2c74b6874f8c66271d48ba8506f5f
Author: Brandon Lewis <brandon_lewis alum berkeley edu>
Date:   Mon Jan 25 13:36:27 2010 -0800

    curve.py: shift curve upward

 pitivi/ui/curve.py |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)
---
diff --git a/pitivi/ui/curve.py b/pitivi/ui/curve.py
index a20bf8b..8f41595 100644
--- a/pitivi/ui/curve.py
+++ b/pitivi/ui/curve.py
@@ -47,11 +47,11 @@ KW_MOUSE_WIDTH = KW_WIDTH2 + 1
 KW_MOUSE_HEIGHT = KW_HEIGHT2 + 1
 KW_LABEL_X_OFFSET = KW_WIDTH2 + 5
 KW_LABEL_Y_OFFSET = -10
+KW_LABEL_OVERFLOW = 10
 KW_LABEL_HPAD = 4
 KW_LABEL_VPAD = 4
 KW_LABEL_HPAD2 = KW_LABEL_VPAD / 2
 KW_LABEL_VPAD2 = KW_LABEL_VPAD / 2
-
 CURVE_STROKE_WIDTH = 2.0
 HAND = gtk.gdk.Cursor(gtk.gdk.HAND2)
 
@@ -117,8 +117,9 @@ class Curve(goocanvas.ItemSimple, goocanvas.Item, View, Zoomable):
             bounds = view.bounds
             time = (Zoomable.pixelToNs(pos[0] - bounds.x1) +
                 view.element.in_point)
-            value = ((1 - (pos[1] - bounds.y1 - view._min) / view._range) *
-                interpolator.range) + interpolator.lower
+            value = ((1 - (pos[1] - KW_LABEL_OVERFLOW - bounds.y1 - 
+                view._min) / view._range) * 
+                    interpolator.range) + interpolator.lower
             return time, value
 
         def enter(self, item ,target):
@@ -143,6 +144,7 @@ class Curve(goocanvas.ItemSimple, goocanvas.Item, View, Zoomable):
         self.interpolator = interpolator
         self._focused_kf = None
         self.normal()
+        self.set_simple_transform(0, -KW_LABEL_OVERFLOW, 1.0, 0)
 
 ## properties
 
@@ -193,13 +195,14 @@ class Curve(goocanvas.ItemSimple, goocanvas.Item, View, Zoomable):
         cr.identity_matrix()
         if self.element.factory:
             self.bounds = goocanvas.Bounds(0, 0,
-            Zoomable.nsToPixel(self.element.duration), self.height)
+            Zoomable.nsToPixel(self.element.duration), self.height +
+                KW_LABEL_OVERFLOW)
 
     def _getKeyframeXY(self, kf):
         interp = self.interpolator
         x = self.nsToPixel(kf.time - self.element.in_point)
-        y = self._range - (((kf.value - interp.lower) / interp.range) *
-            self._range)
+        y = KW_LABEL_OVERFLOW + self._range - (((kf.value - 
+            interp.lower) / interp.range) * self._range)
         return point.Point(x + self.bounds.x1, y + self.bounds.y1 + self._min)
 
     def _controlPoint(self, cr, kf):