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cursor-tracker: Only emit 'cursor-moved' if it moved

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This makes it safe to update the position with the same coordinates
without risking 'cursor-moved' being emitted when nothing actually
moved.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1391
This commit is contained in:
Jonas Ådahl 2020-07-29 11:20:21 +02:00
parent e1f25b7244
commit b24b95db15
1 changed files with 19 additions and 1 deletions
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18
src/backends/meta-cursor-tracker.c
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@ -62,6 +62,9 @@ typedef struct _MetaCursorTrackerPrivate
gboolean is_showing;
float x;
float y;
MetaCursorSprite *effective_cursor; /* May be NULL when hidden */
MetaCursorSprite *displayed_cursor;
@ -179,6 +182,8 @@ meta_cursor_tracker_init (MetaCursorTracker *tracker)
meta_cursor_tracker_get_instance_private (tracker);
priv->is_showing = TRUE;
priv->x = -1.0;
priv->y = -1.0;
}
static void
@ -484,11 +489,24 @@ meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
meta_cursor_tracker_get_instance_private (tracker);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (priv->backend);
gboolean position_changed;
g_assert (meta_is_wayland_compositor ());
if (priv->x != new_x || priv->y != new_y)
{
position_changed = TRUE;
priv->x = new_x;
priv->y = new_y;
}
else
{
position_changed = FALSE;
}
meta_cursor_renderer_set_position (cursor_renderer, new_x, new_y);
if (position_changed)
g_signal_emit (tracker, signals[CURSOR_MOVED], 0, new_x, new_y);
}