40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From 4eab270368617383e2e287c434f71e037e686047 Mon Sep 17 00:00:00 2001
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From: Kristian Rietveld <kris@lanedo.com>
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Date: Sun, 17 Feb 2013 13:06:59 +0100
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Subject: [PATCH 33/68] Never intervene in the event stream for legacy mice
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This is necessary for devices (e.g. Mighty Mouse) which do emit
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precise deltas but no phase.
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---
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gdk/gdkwindow.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
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index 7a3732c..2db0c0b 100644
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--- a/gdk/gdkwindow.c
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+++ b/gdk/gdkwindow.c
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@@ -10849,12 +10849,20 @@ proxy_button_event (GdkEvent *source_event,
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*/
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if (type == GDK_SCROLL && source_event->scroll.has_deltas)
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{
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+ gboolean legacy_mouse =
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+ source_event->scroll.phase == GDK_EVENT_SCROLL_PHASE_NONE &&
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+ source_event->scroll.momentum_phase == GDK_EVENT_SCROLL_PHASE_NONE;
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+
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if (source_event->scroll.phase == GDK_EVENT_SCROLL_PHASE_START)
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{
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set_last_scroll_event_windows (display, pointer_window, event_win);
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}
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- else
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+ else if (!legacy_mouse)
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{
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+ /* Never override pointer and event windows for legacy devices
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+ * which are not capable of momentum scrolling. (The windows
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+ * will be NULL, because they have never been set).
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+ */
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pointer_window = g_object_get_qdata (G_OBJECT (display),
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quark_last_scroll_pointer_window);
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event_win = g_object_get_qdata (G_OBJECT (display),
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--
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1.7.10.2 (Apple Git-33)
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