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ui/gtk: Fix mouse wheel on 3.4.0 or later 

On 3.4.0 or later, send GDK_SCROLL_SMOOTH event, instead of
GDK_SCROLL_UP/DOWN.

This fixes it by converting any smooth scroll to up/down.
(I.e. without smooth support)

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
OGAWA Hirofumi 2017-01-05 05:41:16 +09:00 committed by Gerd Hoffmann
parent a54f0d2ba3
commit e229d1efd7
1 changed files with 13 additions and 0 deletions
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13
ui/gtk.c
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@ -1031,6 +1031,19 @@ static gboolean gd_scroll_event(GtkWidget *widget, GdkEventScroll *scroll,
btn = INPUT_BUTTON_WHEEL_UP;
} else if (scroll->direction == GDK_SCROLL_DOWN) {
btn = INPUT_BUTTON_WHEEL_DOWN;
#if GTK_CHECK_VERSION(3, 4, 0)
} else if (scroll->direction == GDK_SCROLL_SMOOTH) {
gdouble delta_x, delta_y;
if (!gdk_event_get_scroll_deltas((GdkEvent *)scroll,
&delta_x, &delta_y)) {
return TRUE;
}
if (delta_y > 0) {
btn = INPUT_BUTTON_WHEEL_DOWN;
} else {
btn = INPUT_BUTTON_WHEEL_UP;
}
#endif
} else {
return TRUE;
}