def do_draw(self, context):
if not self.discovered:
return
clipped_rect = Gdk.cairo_get_clip_rectangle(context)[1]
num_inpoint_samples = self._get_num_inpoint_samples()
drawn_start = self.pixelToNs(clipped_rect.x)
drawn_duration = self.pixelToNs(clipped_rect.width)
start = int(drawn_start / SAMPLE_DURATION) + num_inpoint_samples
end = int((drawn_start + drawn_duration) / SAMPLE_DURATION) + num_inpoint_samples
if self._force_redraw or self._surface_x > clipped_rect.x or self._end < end:
self._start = start
end = int(min(self.n_samples, end + (self.pixelToNs(MARGIN) /
SAMPLE_DURATION)))
self._end = end
self._surface_x = clipped_rect.x
surface_width = min(self.props.width_request - clipped_rect.x,
clipped_rect.width + MARGIN)
surface_height = int(self.get_parent().get_allocation().height)
self.surface = renderer.fill_surface(self.samples[start:end],
surface_width,
surface_height)
self._force_redraw = False
context.set_operator(cairo.OPERATOR_OVER)
context.set_source_surface(self.surface, self._surface_x, 0)
context.paint()
def do_draw(self, context):
if not self.discovered:
return
clipped_rect = Gdk.cairo_get_clip_rectangle(context)[1]
num_inpoint_samples = self._get_num_inpoint_samples()
drawn_start = self.pixelToNs(clipped_rect.x)
drawn_duration = self.pixelToNs(clipped_rect.width)
start = int(drawn_start / SAMPLE_DURATION) + num_inpoint_samples
end = int((drawn_start + drawn_duration) /
SAMPLE_DURATION) + num_inpoint_samples
if self._force_redraw or self._surface_x > clipped_rect.x or self._end < end:
self._start = start
end = int(
min(self.n_samples,
end + (self.pixelToNs(MARGIN) / SAMPLE_DURATION)))
self._end = end
self._surface_x = clipped_rect.x
surface_width = min(self.props.width_request - clipped_rect.x,
clipped_rect.width + MARGIN)
surface_height = int(self.get_parent().get_allocation().height)
self.surface = renderer.fill_surface(self.samples[start:end],
surface_width, surface_height)
self._force_redraw = False
context.set_operator(cairo.OPERATOR_OVER)
context.set_source_surface(self.surface, self._surface_x, 0)
context.paint()
def do_draw(self, context):
if not self.samples:
# Nothing to draw.
return
# The area we have to refresh is determined by the start and end
# calculated in the context of the asset duration.
rect = Gdk.cairo_get_clip_rectangle(context)[1]
inpoint = self.ges_elem.props.in_point
max_duration = self.ges_elem.get_asset().get_filesource_asset(
).get_duration()
start_ns = min(max(0, self.pixelToNs(rect.x) + inpoint), max_duration)
end_ns = min(max(0,
self.pixelToNs(rect.x + rect.width) + inpoint),
max_duration)
zoom = self.getCurrentZoomLevel()
height = self.get_allocation().height
if not self.surface or \
height != self.surface.get_height() or \
zoom != self._surface_zoom_level or \
start_ns < self._surface_start_ns or \
end_ns > self._surface_end_ns:
if self.surface:
self.surface.finish()
self.surface = None
self._surface_zoom_level = zoom
# The generated waveform is for an extended range if possible,
# so if the user scrolls we don't rebuild the waveform every time.
extra = self.pixelToNs(WAVEFORM_SURFACE_EXTRA_PX)
self._surface_start_ns = max(0, start_ns - extra)
self._surface_end_ns = min(end_ns + extra, max_duration)
range_start = min(
max(0, int(self._surface_start_ns / SAMPLE_DURATION)),
len(self.samples))
range_end = min(
max(0, int(self._surface_end_ns / SAMPLE_DURATION)),
len(self.samples))
samples = self.samples[range_start:range_end]
surface_width = self.nsToPixel(self._surface_end_ns -
self._surface_start_ns)
self.surface = renderer.fill_surface(samples, surface_width,
height)
# Paint the surface, ignoring the clipped rect.
# We only have to make sure the offset is correct:
# 1. + self._start_surface_ns, because that's the position of
# the surface in context, if the entire asset would be drawn.
# 2. - inpoint, because we're drawing a clip, not the entire asset.
context.set_operator(cairo.OPERATOR_OVER)
offset = self.nsToPixel(self._surface_start_ns - inpoint)
context.set_source_surface(self.surface, offset, 0)
context.paint()
def _drawContentCb(self, unused_canvas, cr, unused_surf_w, unused_surf_h):
cr.set_operator(cairo.OPERATOR_CLEAR)
cr.paint()
if not self.discovered:
return
if self.surface:
self.surface.finish()
self.surface = renderer.fill_surface(self.samples[self.start:self.end], int(self.width), int(EXPANDED_SIZE))
cr.set_operator(cairo.OPERATOR_OVER)
cr.set_source_surface(self.surface, 0, 0)
cr.paint()
def _drawContentCb(self, unused_canvas, context, unused_surf_w, unused_surf_h):
context.set_operator(cairo.OPERATOR_CLEAR)
context.paint()
if not self.discovered:
return
if self.surface:
self.surface.finish()
self.surface = renderer.fill_surface(self.samples[self.start:self.end], int(self.width), int(EXPANDED_SIZE))
context.set_operator(cairo.OPERATOR_OVER)
context.set_source_surface(self.surface, 0, 0)
context.paint()
