def _do_flip(self):
""" Draw the canvas to the screen. """
sdl2.SDL_FillRect(self.work_surface, None, self.border_attr)
if self.composite_artifacts:
self.work_pixels[:] = video_graphical.apply_composite_artifacts(
self.pixels[self.vpagenum], 4 // self.bitsperpixel)
sdl2.SDL_SetSurfacePalette(self.work_surface,
self.composite_palette)
else:
self.work_pixels[:] = self.pixels[self.vpagenum]
sdl2.SDL_SetSurfacePalette(self.work_surface,
self.show_palette[self.blink_state])
# apply cursor to work surface
self._show_cursor(True)
# convert 8-bit work surface to (usually) 32-bit display surface format
pixelformat = self.display_surface.contents.format
conv = sdl2.SDL_ConvertSurface(self.work_surface, pixelformat, 0)
# scale converted surface and blit onto display
if not self.smooth:
sdl2.SDL_BlitScaled(conv, None, self.display_surface, None)
else:
# smooth-scale converted surface
w, h = self.window_width, self.window_height
zoomx = ctypes.c_double(w / (self.size[0] + 2.0 * self.border_x))
zoomy = ctypes.c_double(h / (self.size[1] + 2.0 * self.border_y))
# only free the surface just before zoomSurface needs to re-allocate
# so that the memory block is highly likely to be easily available
# this seems to avoid unpredictable delays
sdl2.SDL_FreeSurface(self.zoomed)
self.zoomed = sdl2.sdlgfx.zoomSurface(conv, zoomx, zoomy,
sdl2.sdlgfx.SMOOTHING_ON)
# blit onto display
sdl2.SDL_BlitSurface(self.zoomed, None, self.display_surface, None)
# create clipboard feedback
if self.clipboard.active():
rects = (sdl2.SDL_Rect(r[0] + self.border_x, r[1] + self.border_y,
r[2], r[3])
for r in self.clipboard.selection_rect)
sdl_rects = (sdl2.SDL_Rect *
len(self.clipboard.selection_rect))(*rects)
sdl2.SDL_FillRect(
self.overlay, None,
sdl2.SDL_MapRGBA(self.overlay.contents.format, 0, 0, 0, 0))
sdl2.SDL_FillRects(
self.overlay, sdl_rects, len(sdl_rects),
sdl2.SDL_MapRGBA(self.overlay.contents.format, 128, 0, 128, 0))
sdl2.SDL_BlitScaled(self.overlay, None, self.display_surface, None)
# flip the display
sdl2.SDL_UpdateWindowSurface(self.display)
def _do_flip(self):
""" Draw the canvas to the screen. """
sdl2.SDL_FillRect(self.work_surface, None, self.border_attr)
if self.composite_artifacts:
self.work_pixels[:] = video_graphical.apply_composite_artifacts(
self.pixels[self.vpagenum], 4 // self.bitsperpixel
)
sdl2.SDL_SetSurfacePalette(self.work_surface, self.composite_palette)
else:
self.work_pixels[:] = self.pixels[self.vpagenum]
sdl2.SDL_SetSurfacePalette(self.work_surface, self.show_palette[self.blink_state])
# apply cursor to work surface
self._show_cursor(True)
# convert 8-bit work surface to (usually) 32-bit display surface format
pixelformat = self.display_surface.contents.format
conv = sdl2.SDL_ConvertSurface(self.work_surface, pixelformat, 0)
# scale converted surface and blit onto display
if not self.smooth:
sdl2.SDL_BlitScaled(conv, None, self.display_surface, None)
else:
# smooth-scale converted surface
w, h = self.window_width, self.window_height
zoomx = ctypes.c_double(w / (self.size[0] + 2.0 * self.border_x))
zoomy = ctypes.c_double(h / (self.size[1] + 2.0 * self.border_y))
# only free the surface just before zoomSurface needs to re-allocate
# so that the memory block is highly likely to be easily available
# this seems to avoid unpredictable delays
sdl2.SDL_FreeSurface(self.zoomed)
self.zoomed = sdl2.sdlgfx.zoomSurface(conv, zoomx, zoomy, sdl2.sdlgfx.SMOOTHING_ON)
# blit onto display
sdl2.SDL_BlitSurface(self.zoomed, None, self.display_surface, None)
# create clipboard feedback
if self.clipboard.active():
rects = (
sdl2.SDL_Rect(r[0] + self.border_x, r[1] + self.border_y, r[2], r[3])
for r in self.clipboard.selection_rect
)
sdl_rects = (sdl2.SDL_Rect * len(self.clipboard.selection_rect))(*rects)
sdl2.SDL_FillRect(self.overlay, None, sdl2.SDL_MapRGBA(self.overlay.contents.format, 0, 0, 0, 0))
sdl2.SDL_FillRects(
self.overlay, sdl_rects, len(sdl_rects), sdl2.SDL_MapRGBA(self.overlay.contents.format, 128, 0, 128, 0)
)
sdl2.SDL_BlitScaled(self.overlay, None, self.display_surface, None)
# flip the display
sdl2.SDL_UpdateWindowSurface(self.display)
def apply_composite_artifacts(screen, pixels=4):
""" Process the canvas to apply composite colour artifacts. """
src_array = pygame.surfarray.array2d(screen)
return pygame.surfarray.make_surface(
video_graphical.apply_composite_artifacts(src_array, pixels))
def apply_composite_artifacts(screen, pixels=4):
""" Process the canvas to apply composite colour artifacts. """
src_array = pygame.surfarray.array2d(screen)
return pygame.surfarray.make_surface(
video_graphical.apply_composite_artifacts(src_array, pixels))