def _open_file(self):
self.np_img = self.image_opener.open_file()
self.image_history.reset()
self.image_history.add_new_state(self.np_img)
self.image_saver.filename = self.image_opener.filename
# in case of png files swap channels
if self.np_img.shape[2] == 4:
self.np_img = utils.bgra2rgba(self.np_img)
self._show_np_image()
self._enable_menu_items(True)
self._enable_undo_redo()
self.ui.actionSave_As.setEnabled(True)
def mask_pixbuf(self, pb, width, height):
"""
Mask the pixbuf so there is no offscreen garbage on multimonitor setups
"""
geometry = self.get_geometry()
mask = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
mask_cr = cairo.Context(mask)
# fill transparent
mask_cr.set_source_rgba(0, 0, 0, 0)
mask_cr.fill()
mask_cr.paint()
for geo in geometry:
mask_cr.rectangle(geo.x, geo.y, geo.width, geo.height)
mask_cr.set_source_rgba(1, 1, 1, 1)
mask_cr.fill()
img = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
cr = cairo.Context(img)
gdkcr = gtk.gdk.CairoContext(cr)
# fill with the dafault color
gdkcr.set_source_rgba(0, 0, 0, 1)
gdkcr.fill()
gdkcr.paint()
# use the mask to paint from the pixbuf
gdkcr.set_source_pixbuf(pb, 0, 0)
gdkcr.mask_surface(mask, 0, 0)
gdkcr.fill()
stride = img.get_stride()
pixels = img.get_data()
data = bgra2rgba(pixels, width, height)
new_pb = gtk.gdk.pixbuf_new_from_data(data, gtk.gdk.COLORSPACE_RGB,
True, 8, width, height, stride)
return new_pb
def mask_pixbuf(self, pb, width, height):
"""
Mask the pixbuf so there is no offscreen garbage on multimonitor setups
"""
geometry = self.get_geometry()
mask = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
mask_cr = cairo.Context(mask)
# fill transparent
mask_cr.set_source_rgba(0, 0, 0, 0)
mask_cr.fill()
mask_cr.paint()
for geo in geometry:
mask_cr.rectangle(geo.x, geo.y, geo.width, geo.height)
mask_cr.set_source_rgba(1, 1, 1, 1)
mask_cr.fill()
img = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
cr = cairo.Context(img)
gdkcr = gtk.gdk.CairoContext(cr)
# fill with the dafault color
gdkcr.set_source_rgba(0, 0, 0, 1)
gdkcr.fill()
gdkcr.paint()
# use the mask to paint from the pixbuf
gdkcr.set_source_pixbuf(pb, 0, 0)
gdkcr.mask_surface(mask, 0, 0)
gdkcr.fill()
stride = img.get_stride()
pixels = img.get_data()
data = bgra2rgba(pixels, width, height)
new_pb = gtk.gdk.pixbuf_new_from_data(data, gtk.gdk.COLORSPACE_RGB,
True, 8, width, height, stride)
return new_pb