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when delivering canvas events, if an item is grabbed, use it in preference to Canvas::_current_item, but still propagate to its ancestors if left unhandled

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This commit is contained in:
Paul Davis 2014-02-11 22:49:10 -05:00
parent 50a014acf0
commit a329a44cc1
1 changed files with 7 additions and 12 deletions
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19
libs/canvas/canvas.cc
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@ -506,20 +506,24 @@ GtkCanvas::deliver_event (GdkEvent* event)
{
/* Point in in canvas coordinate space */
const Item* event_item;
if (_grabbed_item) {
/* we have a grabbed item, so everything gets sent there */
DEBUG_TRACE (PBD::DEBUG::CanvasEvents, string_compose ("%1 %2 (%3) was grabbed, send event there\n",
_grabbed_item, _grabbed_item->whatami(), _grabbed_item->name));
return _grabbed_item->Event (event);
event_item = _grabbed_item;
} else {
event_item = _current_item;
}
if (!_current_item) {
if (!event_item) {
return false;
}
/* run through the items from child to parent, until one claims the event */
Item* item = const_cast<Item*> (_current_item);
Item* item = const_cast<Item*> (event_item);
while (item) {
@ -677,15 +681,6 @@ GtkCanvas::on_motion_notify_event (GdkEventMotion* ev)
// DEBUG_TRACE (PBD::DEBUG::CanvasEvents, string_compose ("canvas motion @ %1, %2\n", ev->x, ev->y));
if (_grabbed_item) {
/* if we have a grabbed item, it gets just the motion event,
since no enter/leave events can have happened.
*/
DEBUG_TRACE (PBD::DEBUG::CanvasEvents, string_compose ("%1 %2 (%3) was grabbed, send MOTION event there\n",
_grabbed_item, _grabbed_item->whatami(), _grabbed_item->name));
return _grabbed_item->Event (reinterpret_cast<GdkEvent*> (&copy));
}
pick_current_item (where, ev->state);
/* Now deliver the motion event. It may seem a little inefficient