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Code Issues 1 Projects Releases Wiki Activity

Faster handling of partial expose events in timeline

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This commit is contained in:
René Stadler 2008-01-25 12:40:51 +02:00 committed by Stefan Sauer
parent ebda9480c3
commit 43badaea0c
1 changed files with 19 additions and 6 deletions
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25
debug-viewer/GstDebugViewer/Plugins/Timeline.py
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@ -405,7 +405,7 @@ class TimelineWidget (gtk.DrawingArea):
self.__draw (self.__offscreen)
self.__update_from_offscreen ()
def __update_from_offscreen (self):
def __update_from_offscreen (self, rect = None):
if not self.props.visible:
return
@ -414,9 +414,13 @@ class TimelineWidget (gtk.DrawingArea):
self.__redraw ()
gc = gtk.gdk.GC (self.window)
# FIXME: Accept a subregion here to speed up partial expose.
self.window.draw_drawable (gc, self.__offscreen, 0, 0, 0, 0, -1, -1)
self.__draw_position (self.window)
if rect is None:
self.window.draw_drawable (gc, self.__offscreen, 0, 0, 0, 0, -1, -1)
self.__draw_position (self.window)
else:
x, y, w, h = rect
self.window.draw_drawable (gc, self.__offscreen, x, y, x, y, w, h)
self.__draw_position (self.window, clip = rect)
def update (self, model):
@ -569,7 +573,7 @@ class TimelineWidget (gtk.DrawingArea):
else:
return False
def __draw_position (self, drawable):
def __draw_position (self, drawable, clip = None):
if not self.__have_position ():
return
@ -583,9 +587,18 @@ class TimelineWidget (gtk.DrawingArea):
position1 = int (float (start_ts - first_ts) / step)
position2 = int (float (end_ts - first_ts) / step)
if clip:
clip_x, clip_y, clip_w, clip_h = clip
if clip_x + clip_w < position1 - 1 or clip_x > position2 + 1:
return
ctx = drawable.cairo_create ()
x, y, w, h = self.get_allocation ()
if clip:
ctx.rectangle (*clip)
ctx.clip ()
line_width = position2 - position1
if line_width <= 1:
ctx.set_source_rgb (1., 0., 0.)
@ -601,7 +614,7 @@ class TimelineWidget (gtk.DrawingArea):
def __handle_expose_event (self, self_, event):
if self.__offscreen:
self.__update_from_offscreen ()
self.__update_from_offscreen (event.area)
else:
self.__redraw ()
return True