def _draw_handle_shadow(self, context, alpha_factor):
rect = self.get_rect()
context.save()
# There is a massive performance boost for groups when clipping is used.
# Integer limits are again dramatically faster (x4) then using floats.
# for 1000x draw_drop_shadow:
# with clipping: ~300ms, without: ~11000ms
context.rectangle(*self.get_shadow_rect().int())
context.clip()
context.push_group()
# draw the shadow
context.push_group_with_content(cairo.CONTENT_ALPHA)
self._build_handle_path(context)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
context.fill()
group = context.pop_group()
drop_shadow(context, group, rect, self._shadow_size,
self._shadow_offset, self._shadow_alpha, 5)
# cut out the handle area, because the handle is transparent
context.save()
context.set_operator(cairo.OPERATOR_CLEAR)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
self._build_handle_path(context)
context.fill()
context.restore()
context.pop_group_to_source()
context.paint()
context.restore()
def _draw_handle_shadow(self, context, alpha_factor):
rect = self.get_rect()
context.save()
# There is a massive performance boost for groups when clipping is used.
# Integer limits are again dramatically faster (x4) then using floats.
# for 1000x draw_drop_shadow:
# with clipping: ~300ms, without: ~11000ms
context.rectangle(*self.get_shadow_rect().int())
context.clip()
context.push_group()
# draw the shadow
context.push_group_with_content(cairo.CONTENT_ALPHA)
self._build_handle_path(context)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
context.fill()
group = context.pop_group()
drop_shadow(context, group, rect, self._shadow_size, self._shadow_offset, self._shadow_alpha, 5)
# cut out the handle area, because the handle is transparent
context.save()
context.set_operator(cairo.OPERATOR_CLEAR)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
self._build_handle_path(context)
context.fill()
context.restore()
context.pop_group_to_source()
context.paint()
context.restore()
def create_shadow_surface(self, base_context, shadow_steps, shadow_alpha):
"""
Draw shadow and shaded halo.
Somewhat slow, make sure to cache the result.
Glitchy, if the clip-rect covers only a single button (Precise),
therefore, draw only with unrestricted clipping rect.
"""
rect = self.get_canvas_rect()
root = self.get_layout_root()
if rect.is_empty():
return None
extent = min(root.context.scale_log_to_canvas((1.0, 1.0)))
alpha = pi / 2 + self.get_light_direction()
shadow_opacity = config.theme_settings.key_shadow_strength * \
shadow_alpha
shadow_scale = config.theme_settings.key_shadow_size / 20.0
shadow_radius = max(extent * shadow_scale, 1.0)
shadow_displacement = max(extent * shadow_scale * 0.26, 1.0)
shadow_offset = (shadow_displacement * cos(alpha),
shadow_displacement * sin(alpha))
has_halo = shadow_steps > 1 and not config.window.transparent_background
halo_opacity = shadow_opacity * 0.11
halo_radius = max(extent * 8.0, 1.0)
clip_rect = rect.offset(shadow_offset[0]+1, shadow_offset[1]+1)
if has_halo:
clip_rect = clip_rect.inflate(halo_radius * 1.5)
else:
clip_rect = clip_rect.inflate(shadow_radius * 1.3)
clip_rect = clip_rect.int()
# create caching surface
target = base_context.get_target()
surface = target.create_similar(cairo.CONTENT_ALPHA,
clip_rect.w, clip_rect.h)
context = cairo.Context(surface)
# paint the surface
context.save()
context.translate(-clip_rect.x, -clip_rect.y)
context.rectangle(*clip_rect)
context.clip()
context.push_group_with_content(cairo.CONTENT_ALPHA)
self._build_canvas_path(context, rect)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
context.fill()
shape = context.pop_group()
# shadow
drop_shadow(context, shape, rect,
shadow_radius, shadow_offset, shadow_opacity, shadow_steps)
# halo
if has_halo:
drop_shadow(context, shape, rect,
halo_radius, shadow_offset, halo_opacity, shadow_steps)
# cut out the key area, the key may be transparent
context.set_operator(cairo.OPERATOR_CLEAR)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
self._build_canvas_path(context, rect)
context.fill()
context.restore()
return surface, clip_rect
def create_shadow_surface(self, base_context, shadow_steps, shadow_alpha):
"""
Draw shadow and shaded halo.
Somewhat slow, make sure to cache the result.
Glitchy, if the clip-rect covers only a single button (Precise),
therefore, draw only with unrestricted clipping rect.
"""
rect = self.get_canvas_rect()
root = self.get_layout_root()
if rect.is_empty():
return None
extent = min(root.context.scale_log_to_canvas((1.0, 1.0)))
alpha = pi / 2 + self.get_light_direction()
shadow_opacity = config.theme_settings.key_shadow_strength * \
shadow_alpha
shadow_scale = config.theme_settings.key_shadow_size / 20.0
shadow_radius = max(extent * shadow_scale, 1.0)
shadow_displacement = max(extent * shadow_scale * 0.26, 1.0)
shadow_offset = (shadow_displacement * cos(alpha),
shadow_displacement * sin(alpha))
has_halo = shadow_steps > 1 and not config.window.transparent_background
halo_opacity = shadow_opacity * 0.11
halo_radius = max(extent * 8.0, 1.0)
clip_rect = rect.offset(shadow_offset[0] + 1, shadow_offset[1] + 1)
if has_halo:
clip_rect = clip_rect.inflate(halo_radius * 1.5)
else:
clip_rect = clip_rect.inflate(shadow_radius * 1.3)
clip_rect = clip_rect.int()
# create caching surface
target = base_context.get_target()
surface = target.create_similar(cairo.CONTENT_ALPHA, clip_rect.w,
clip_rect.h)
context = cairo.Context(surface)
surface.set_device_offset(-clip_rect.x, -clip_rect.y)
# paint the surface
context.save()
context.rectangle(*clip_rect)
context.clip()
context.push_group_with_content(cairo.CONTENT_ALPHA)
self.build_rect_path(context, rect)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
context.fill()
shape = context.pop_group()
# shadow
drop_shadow(context, shape, rect, shadow_radius, shadow_offset,
shadow_opacity, shadow_steps)
# halo
if has_halo:
drop_shadow(context, shape, rect, halo_radius, shadow_offset,
halo_opacity, shadow_steps)
# cut out the key area, the key may be transparent
context.set_operator(cairo.OPERATOR_CLEAR)
context.set_source_rgba(0.0, 0.0, 0.0, 1.0)
self.build_rect_path(context, rect)
context.fill()
context.restore()
return surface
