I just implemented a virtual trackball with pygtk, but it's not
quite right. When I say
class Viewer(gtkgl.GtkGLArea):
def __init__(self, width, height):
gtkgl.GtkGLArea.__init__(self,
(gtkgl.RGBA, gtkgl.DOUBLEBUFFER, gtkgl.DEPTH_SIZE, 1))
gtkgl.GtkGLArea.size(self, width, height)
# ...
self.add_events(
gtk.GDK.BUTTON_PRESS_MASK
|gtk.GDK.BUTTON_RELEASE_MASK
|gtk.GDK.KEY_PRESS_MASK
|gtk.GDK.KEY_RELEASE_MASK
|gtk.GDK.POINTER_MOTION_MASK
|gtk.GDK.POINTER_MOTION_HINT_MASK
);
# ...
self.connect("motion_notify_event",
lambda glarea, event, me=self: me.on_motion(event))
self.connect("button_press_event",
lambda glarea, event, me=self: me.on_button_press(event))
self.connect("button_release_event",
lambda glarea, event, me=self: me.on_button_release(event))
# ...
I only get motion events at the instant when a mouse button is pressed or when
the mouse enters or leaves the widget. When I remove the line
gtk.GDK.POINTER_MOTION_HINT_MASK
I get all the motion events I want, but they aren't conveniently summarized
as one big event. The annoying result is that the object on the screen
keeps on responding to events produced by the mouse up to a second ago.
Does anyone know how to fix this?
Thanks,
Issac
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