def cairo_paint_pointer_overlay(context, cursor_data, px, py, start_time):
if not cursor_data:
return
elapsed = max(0, monotonic_time() - start_time)
if elapsed > 6:
return
cw = cursor_data[3]
ch = cursor_data[4]
xhot = cursor_data[5]
yhot = cursor_data[6]
pixels = cursor_data[8]
x = px - xhot
y = py - yhot
alpha = max(0, (5.0 - elapsed) / 5.0)
log("cairo_paint_pointer_overlay%s drawing pointer with cairo, alpha=%s",
(context, x, y, start_time), alpha)
context.translate(x, y)
context.rectangle(0, 0, cw, ch)
argb = unpremultiply_argb(pixels)
img_data = memoryview_to_bytes(argb)
pixbuf = pixbuf_new_from_data(img_data, COLORSPACE_RGB, True, 8, cw, ch,
cw * 4)
context.set_operator(cairo.OPERATOR_OVER)
cairo_set_source_pixbuf(context, pixbuf, 0, 0)
context.paint()
def cairo_paint_pixbuf(self, pixbuf, x, y):
""" must be called from UI thread """
log("cairo_paint_pixbuf(%s, %s, %s) backing=%s", pixbuf, x, y, self._backing)
#now use it to paint:
gc = gdk_cairo_context(cairo.Context(self._backing))
gc.set_operator(cairo.OPERATOR_SOURCE)
cairo_set_source_pixbuf(gc, pixbuf, x, y)
gc.paint()
def cairo_paint_pixbuf(self, pixbuf, x, y):
""" must be called from UI thread """
log("cairo_paint_pixbuf(%s, %s, %s) backing=%s", pixbuf, x, y, self._backing)
#now use it to paint:
gc = gdk_cairo_context(cairo.Context(self._backing))
cairo_set_source_pixbuf(gc, pixbuf, x, y)
gc.paint()
return True
def cairo_paint_pixbuf(self, pixbuf, x, y):
""" must be called from UI thread """
log("cairo_paint_pixbuf(%s, %s, %s) backing=%s", pixbuf, x, y,
self._backing)
#now use it to paint:
gc = gdk_cairo_context(cairo.Context(self._backing))
gc.set_operator(cairo.OPERATOR_SOURCE)
cairo_set_source_pixbuf(gc, pixbuf, x, y)
gc.paint()
def cairo_paint_pixbuf(self, pixbuf, x, y):
""" must be called from UI thread """
log("cairo_paint_pixbuf(%s, %s, %s) backing=%s", pixbuf, x, y,
self._backing)
#now use it to paint:
gc = gdk_cairo_context(cairo.Context(self._backing))
cairo_set_source_pixbuf(gc, pixbuf, x, y)
gc.paint()
return True
