def _scrollEventCb(self, canvas, event):
if event.state & gtk.gdk.SHIFT_MASK:
# shift + scroll => vertical (up/down) scroll
if event.direction == gtk.gdk.SCROLL_UP:
self.scroll_up()
elif event.direction == gtk.gdk.SCROLL_DOWN:
self.scroll_down()
event.state &= ~gtk.gdk.SHIFT_MASK
elif event.state & gtk.gdk.CONTROL_MASK:
# zoom + scroll => zooming (up: zoom in)
if event.direction == gtk.gdk.SCROLL_UP:
Zoomable.zoomIn()
return True
elif event.direction == gtk.gdk.SCROLL_DOWN:
Zoomable.zoomOut()
return True
return False
else:
if event.direction == gtk.gdk.SCROLL_UP:
self.scroll_left()
elif event.direction == gtk.gdk.SCROLL_DOWN:
self.scroll_right()
return True
def _scrollEventCb(self, canvas, event):
if event.state & gtk.gdk.SHIFT_MASK:
# shift + scroll => vertical (up/down) scroll
if event.direction == gtk.gdk.SCROLL_UP:
self.scroll_up()
elif event.direction == gtk.gdk.SCROLL_DOWN:
self.scroll_down()
event.state &= ~gtk.gdk.SHIFT_MASK
elif event.state & gtk.gdk.CONTROL_MASK:
# zoom + scroll => zooming (up: zoom in)
if event.direction == gtk.gdk.SCROLL_UP:
Zoomable.zoomIn()
return True
elif event.direction == gtk.gdk.SCROLL_DOWN:
Zoomable.zoomOut()
return True
return False
else:
if event.direction == gtk.gdk.SCROLL_UP:
self.scroll_left()
elif event.direction == gtk.gdk.SCROLL_DOWN:
self.scroll_right()
return True
def _zoomOutCb(self, unused_action):
Zoomable.zoomOut()