forked from AuroraMiddleware/gtk
gdk: strengthen touch crossing event synthesizing on programmatical crossings
There are cases where crossing events aren't generated by input devices themselves but rather through programmatical means (windows being moved/hidden/destroyed while the pointer is on top). Those events come from X as sourceid=deviceid, and GDK does its deal at lessening this by setting a meaningful source device on such events, although this caused some confusion on the mechanism to block/synthesize touch crossing events that could possibly cause bogus enter events on the new window below the pointer. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=691572
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a763738f15
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@ -985,7 +985,8 @@ switch_to_pointer_grab (GdkDisplay *display,
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NULL, NULL);
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}
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if (pointer_window != last_grab->window)
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if (!info->need_touch_press_enter &&
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pointer_window != last_grab->window)
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synthesize_crossing_events (display, device, source_device,
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last_grab->window, pointer_window,
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GDK_CROSSING_UNGRAB, time, serial);
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@ -8373,10 +8373,12 @@ send_crossing_event (GdkDisplay *display,
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window_event_mask = window->event_mask;
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if (type == GDK_ENTER_NOTIFY &&
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pointer_info->need_touch_press_enter &&
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(pointer_info->need_touch_press_enter ||
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gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN) &&
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mode != GDK_CROSSING_TOUCH_BEGIN &&
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mode != GDK_CROSSING_TOUCH_END)
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{
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pointer_info->need_touch_press_enter = TRUE;
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block_event = TRUE;
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}
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else if (type == GDK_LEAVE_NOTIFY)
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