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timeline: clean up widget drawing

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This commit is contained in:
René Stadler 2012-09-22 00:33:41 +02:00 committed by Stefan Sauer
parent 2d508773cc
commit ca6aee7388
1 changed files with 56 additions and 56 deletions
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112
debug-viewer/GstDebugViewer/Plugins/Timeline.py
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@ -457,54 +457,56 @@ class TimelineWidget (gtk.DrawingArea):
def __handle_sentinel_progress (self, sentinel): def __handle_sentinel_progress (self, sentinel):
self.__redraw () self.__invalidate_offscreen ()
def __handle_sentinel_finished (self, sentinel): def __handle_sentinel_finished (self, sentinel):
if sentinel == self.process.freq_sentinel: if sentinel == self.process.freq_sentinel:
self.__redraw () self.__invalidate_offscreen ()
def __handle_process_finished (self): def __handle_process_finished (self):
self.__redraw () self.__invalidate_offscreen ()
def __ensure_offscreen (self): def __ensure_offscreen (self):
x, y, w, h = self.get_allocation () x, y, width, height = self.get_allocation ()
self.__offscreen = gtk.gdk.Pixmap (self.window, w, h, -1) self.__offscreen = gtk.gdk.Pixmap (self.window, width, height, -1)
self.__offscreen_size = (w, h) self.__offscreen_size = (width, height)
if not self.__offscreen: if not self.__offscreen:
self.__offscreen_size = (0, 0) self.__offscreen_size = (0, 0)
raise ValueError ("could not obtain pixmap") raise ValueError ("could not obtain pixmap")
def __redraw (self): def __invalidate_offscreen (self):
if self.__offscreen is None:
return
self.__offscreen = None
self.queue_draw ()
def __update_offscreen (self):
if not self.props.visible: if not self.props.visible:
return return
self.__ensure_offscreen () self.__ensure_offscreen ()
self.__draw_offscreen () self.__draw_offscreen ()
self.__update_from_offscreen ()
def __update_from_offscreen (self, rect = None): def __draw_from_offscreen (self, rect = None):
if not self.props.visible: if not self.props.visible:
return return
if self.__offscreen is None: x, y, width, height = self.get_allocation ()
self.__redraw () offscreen_width, offscreen_height = self.__offscreen_size
if rect is None:
x, y, w, h = self.get_allocation () rect = (0, 0, width, height)
off_w, off_h = self.__offscreen_size
# Fill the background (where the offscreen pixmap doesn't fit) with # Fill the background (where the offscreen pixmap doesn't fit) with
# white. This happens after enlarging the window, until all sentinels # white. This happens after enlarging the window, until all sentinels
# have finished running. # have finished running.
draw_background = True if offscreen_width < width or offscreen_height < height:
if off_w >= w and off_h >= h:
draw_background = False
if draw_background:
ctx = self.window.cairo_create () ctx = self.window.cairo_create ()
if rect: if rect:
@ -513,24 +515,20 @@ class TimelineWidget (gtk.DrawingArea):
rect.y + rect.height) rect.y + rect.height)
ctx.clip () ctx.clip ()
if off_w < w: if offscreen_width < width:
ctx.rectangle (off_w, 0, w, off_h) ctx.rectangle (offscreen_width, 0, width, offscreen_height)
if off_h < h: if offscreen_height < height:
ctx.new_path () ctx.new_path ()
ctx.rectangle (0, off_h, w, h) ctx.rectangle (0, offscreen_height, width, height)
ctx.set_line_width (0.) ctx.set_line_width (0.)
ctx.set_source_rgb (1., 1., 1.) ctx.set_source_rgb (1., 1., 1.)
ctx.fill () ctx.fill ()
gc = gtk.gdk.GC (self.window) gc = gtk.gdk.GC (self.window)
if rect is None: x, y, width, height = rect
self.window.draw_drawable (gc, self.__offscreen, 0, 0, 0, 0, -1, -1) self.window.draw_drawable (gc, self.__offscreen, x, y, x, y, width, height)
self.__draw_position (self.window) self.__draw_position (self.window, clip = rect)
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): def update (self, model):
@ -550,7 +548,7 @@ class TimelineWidget (gtk.DrawingArea):
self.process.abort () self.process.abort ()
self.process.freq_sentinel = None self.process.freq_sentinel = None
self.process.dist_sentinel = None self.process.dist_sentinel = None
self.__redraw () self.__invalidate_offscreen ()
def update_position (self, start_ts, end_ts): def update_position (self, start_ts, end_ts):
@ -562,7 +560,7 @@ class TimelineWidget (gtk.DrawingArea):
if not self.process.freq_sentinel.data: if not self.process.freq_sentinel.data:
return return
self.__update_from_offscreen () self.queue_draw ()
def find_indicative_time_step (self): def find_indicative_time_step (self):
@ -573,13 +571,13 @@ class TimelineWidget (gtk.DrawingArea):
def __draw_offscreen (self): def __draw_offscreen (self):
drawable = self.__offscreen drawable = self.__offscreen
w, h = self.__offscreen_size width, height = self.__offscreen_size
ctx = drawable.cairo_create () ctx = drawable.cairo_create ()
# White background rectangle. # White background rectangle.
ctx.set_line_width (0.) ctx.set_line_width (0.)
ctx.rectangle (0, 0, w, h) ctx.rectangle (0, 0, width, height)
ctx.set_source_rgb (1., 1., 1.) ctx.set_source_rgb (1., 1., 1.)
ctx.fill () ctx.fill ()
ctx.new_path () ctx.new_path ()
@ -587,10 +585,10 @@ class TimelineWidget (gtk.DrawingArea):
# Horizontal reference lines. # Horizontal reference lines.
ctx.set_line_width (1.) ctx.set_line_width (1.)
ctx.set_source_rgb (.95, .95, .95) ctx.set_source_rgb (.95, .95, .95)
for i in range (h // 16): for i in range (height // 16):
y = i * 16 - .5 y = i * 16 - .5
ctx.move_to (0, y) ctx.move_to (0, y)
ctx.line_to (w, y) ctx.line_to (width, y)
ctx.stroke () ctx.stroke ()
if self.process.freq_sentinel is None: if self.process.freq_sentinel is None:
@ -599,10 +597,10 @@ class TimelineWidget (gtk.DrawingArea):
# Vertical reference lines. # Vertical reference lines.
pixel_step = self.find_indicative_time_step () pixel_step = self.find_indicative_time_step ()
ctx.set_source_rgb (.9, .9, .9) ctx.set_source_rgb (.9, .9, .9)
for i in range (1, w // pixel_step + 1): for i in range (1, width // pixel_step + 1):
x = i * pixel_step - .5 x = i * pixel_step - .5
ctx.move_to (x, 0) ctx.move_to (x, 0)
ctx.line_to (x, h) ctx.line_to (x, height)
ctx.stroke () ctx.stroke ()
if not self.process.freq_sentinel.data: if not self.process.freq_sentinel.data:
@ -612,7 +610,8 @@ class TimelineWidget (gtk.DrawingArea):
maximum = max (self.process.freq_sentinel.data) maximum = max (self.process.freq_sentinel.data)
ctx.set_source_rgb (0., 0., 0.) ctx.set_source_rgb (0., 0., 0.)
self.__draw_graph (ctx, w, h, maximum, self.process.freq_sentinel.data) self.__draw_graph (ctx, width, height, maximum,
self.process.freq_sentinel.data)
if not self.process.dist_sentinel.data: if not self.process.dist_sentinel.data:
self.logger.debug ("level distribution sentinel has no data yet") self.logger.debug ("level distribution sentinel has no data yet")
@ -631,7 +630,7 @@ class TimelineWidget (gtk.DrawingArea):
Data.debug_level_log, Data.debug_level_log,
Data.debug_level_debug,) Data.debug_level_debug,)
ctx.set_source_rgb (*(colors[level][1].float_tuple ())) ctx.set_source_rgb (*(colors[level][1].float_tuple ()))
self.__draw_graph (ctx, w, h, maximum, self.__draw_graph (ctx, width, height, maximum,
list (cumulative_level_counts (level, *levels_prev))) list (cumulative_level_counts (level, *levels_prev)))
level = Data.debug_level_debug level = Data.debug_level_debug
@ -639,24 +638,24 @@ class TimelineWidget (gtk.DrawingArea):
Data.debug_level_fixme, Data.debug_level_fixme,
Data.debug_level_log,) Data.debug_level_log,)
ctx.set_source_rgb (*(colors[level][1].float_tuple ())) ctx.set_source_rgb (*(colors[level][1].float_tuple ()))
self.__draw_graph (ctx, w, h, maximum, self.__draw_graph (ctx, width, height, maximum,
list (cumulative_level_counts (level, *levels_prev))) list (cumulative_level_counts (level, *levels_prev)))
level = Data.debug_level_log level = Data.debug_level_log
levels_prev = (Data.debug_level_trace,Data.debug_level_fixme,) levels_prev = (Data.debug_level_trace,Data.debug_level_fixme,)
ctx.set_source_rgb (*(colors[level][1].float_tuple ())) ctx.set_source_rgb (*(colors[level][1].float_tuple ()))
self.__draw_graph (ctx, w, h, maximum, self.__draw_graph (ctx, width, height, maximum,
list (cumulative_level_counts (level, *levels_prev))) list (cumulative_level_counts (level, *levels_prev)))
level = Data.debug_level_fixme level = Data.debug_level_fixme
levels_prev = (Data.debug_level_trace,) levels_prev = (Data.debug_level_trace,)
ctx.set_source_rgb (*(colors[level][1].float_tuple ())) ctx.set_source_rgb (*(colors[level][1].float_tuple ()))
self.__draw_graph (ctx, w, h, maximum, self.__draw_graph (ctx, width, height, maximum,
list (cumulative_level_counts (level, *levels_prev))) list (cumulative_level_counts (level, *levels_prev)))
level = Data.debug_level_trace level = Data.debug_level_trace
ctx.set_source_rgb (*(colors[level][1].float_tuple ())) ctx.set_source_rgb (*(colors[level][1].float_tuple ()))
self.__draw_graph (ctx, w, h, maximum, [counts[level] for counts in dist_data]) self.__draw_graph (ctx, width, height, maximum, [counts[level] for counts in dist_data])
# Draw error and warning triangle indicators: # Draw error and warning triangle indicators:
@ -676,17 +675,17 @@ class TimelineWidget (gtk.DrawingArea):
triangle (ctx) triangle (ctx)
ctx.fill () ctx.fill ()
def __draw_graph (self, ctx, w, h, maximum, data): def __draw_graph (self, ctx, width, height, maximum, data):
if not data: if not data:
return return
heights = [h * float (d) / maximum for d in data] heights = [height * float (d) / maximum for d in data]
ctx.move_to (0, h) ctx.move_to (0, height)
for i in range (len (heights)): for i in range (len (heights)):
ctx.line_to (i - .5, h - heights[i] + .5) ctx.line_to (i - .5, height - heights[i] + .5)
ctx.line_to (i, h) ctx.line_to (i, height)
ctx.close_path () ctx.close_path ()
ctx.fill () ctx.fill ()
@ -721,7 +720,7 @@ class TimelineWidget (gtk.DrawingArea):
return return
ctx = drawable.cairo_create () ctx = drawable.cairo_create ()
x, y, w, h = self.get_allocation () x, y, width, height = self.get_allocation ()
if clip: if clip:
ctx.rectangle (*clip) ctx.rectangle (*clip)
@ -732,19 +731,20 @@ class TimelineWidget (gtk.DrawingArea):
ctx.set_source_rgb (1., 0., 0.) ctx.set_source_rgb (1., 0., 0.)
ctx.set_line_width (1.) ctx.set_line_width (1.)
ctx.move_to (position1 + .5, 0) ctx.move_to (position1 + .5, 0)
ctx.line_to (position1 + .5, h) ctx.line_to (position1 + .5, height)
ctx.stroke () ctx.stroke ()
else: else:
ctx.set_source_rgba (1., 0., 0., .5) ctx.set_source_rgba (1., 0., 0., .5)
ctx.rectangle (position1, 0, line_width, h) ctx.rectangle (position1, 0, line_width, height)
ctx.fill () ctx.fill ()
def do_expose_event (self, event): def do_expose_event (self, event):
if self.__offscreen: if self.__offscreen is None:
self.__update_from_offscreen (event.area) self.__update_offscreen ()
else:
self.__redraw () self.__draw_from_offscreen ()
return True return True
def do_configure_event (self, event): def do_configure_event (self, event):