input: Pass axis events through pointer grab interfaces

Don't only send motions and buttons but also axis events through the
pointer grab interface.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>

desktop-shell/exposay.c

@@ -385,6 +385,12 @@ exposay_button(struct weston_pointer_grab *grab, uint32_t time, uint32_t button,
 		shell->exposay.clicked = NULL;
 }
 
+static void
+exposay_axis(struct weston_pointer_grab *grab,
+	     uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+}
+
 static void
 exposay_pointer_grab_cancel(struct weston_pointer_grab *grab)
 {
@@ -398,6 +404,7 @@ static const struct weston_pointer_grab_interface exposay_ptr_grab = {
 	exposay_focus,
 	exposay_motion,
 	exposay_button,
+	exposay_axis,
 	exposay_pointer_grab_cancel,
 };
 

desktop-shell/shell.c

@@ -1700,6 +1700,12 @@ noop_grab_focus(struct weston_pointer_grab *grab)
 {
 }
 
+static void
+noop_grab_axis(struct weston_pointer_grab *grab,
+	       uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+}
+
 static void
 constrain_position(struct weston_move_grab *move, int *cx, int *cy)
 {
@@ -1782,6 +1788,7 @@ static const struct weston_pointer_grab_interface move_grab_interface = {
 	noop_grab_focus,
 	move_grab_motion,
 	move_grab_button,
+	noop_grab_axis,
 	move_grab_cancel,
 };
 
@@ -1945,6 +1952,7 @@ static const struct weston_pointer_grab_interface resize_grab_interface = {
 	noop_grab_focus,
 	resize_grab_motion,
 	resize_grab_button,
+	noop_grab_axis,
 	resize_grab_cancel,
 };
 
@@ -2109,6 +2117,7 @@ static const struct weston_pointer_grab_interface busy_cursor_grab_interface = {
 	busy_cursor_grab_focus,
 	busy_cursor_grab_motion,
 	busy_cursor_grab_button,
+	noop_grab_axis,
 	busy_cursor_grab_cancel,
 };
 
@@ -3290,6 +3299,19 @@ popup_grab_button(struct weston_pointer_grab *grab,
 		shseat->popup_grab.initial_up = 1;
 }
 
+static void
+popup_grab_axis(struct weston_pointer_grab *grab,
+		uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+	struct weston_pointer *pointer = grab->pointer;
+	struct wl_resource *resource;
+	struct wl_list *resource_list;
+
+	resource_list = &pointer->focus_resource_list;
+	wl_resource_for_each(resource, resource_list)
+		wl_pointer_send_axis(resource, time, axis, value);
+}
+
 static void
 popup_grab_cancel(struct weston_pointer_grab *grab)
 {
@@ -3300,6 +3322,7 @@ static const struct weston_pointer_grab_interface popup_grab_interface = {
 	popup_grab_focus,
 	popup_grab_motion,
 	popup_grab_button,
+	popup_grab_axis,
 	popup_grab_cancel,
 };
 
@@ -5000,6 +5023,7 @@ static const struct weston_pointer_grab_interface rotate_grab_interface = {
 	noop_grab_focus,
 	rotate_grab_motion,
 	rotate_grab_button,
+	noop_grab_axis,
 	rotate_grab_cancel,
 };
 

ivi-shell/hmi-controller.c

@@ -1322,6 +1322,13 @@ pointer_noop_grab_focus(struct weston_pointer_grab *grab)
 {
 }
 
+static void
+pointer_default_grab_axis(struct weston_pointer_grab *grab,
+			  uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+	weston_pointer_send_axis(grab->pointer, time, axis, value);
+}
+
 static void
 move_grab_update(struct move_grab *move, wl_fixed_t pointer[2])
 {
@@ -1466,6 +1473,7 @@ static const struct weston_pointer_grab_interface pointer_move_grab_workspace_in
 	pointer_noop_grab_focus,
 	pointer_move_grab_motion,
 	pointer_move_workspace_grab_button,
+	pointer_default_grab_axis,
 	pointer_move_workspace_grab_cancel
 };
 

src/compositor.h

@@ -247,6 +247,8 @@ struct weston_pointer_grab_interface {
 		       wl_fixed_t x, wl_fixed_t y);
 	void (*button)(struct weston_pointer_grab *grab,
 		       uint32_t time, uint32_t button, uint32_t state);
+	void (*axis)(struct weston_pointer_grab *grab,
+		     uint32_t time, uint32_t axis, wl_fixed_t value);
 	void (*cancel)(struct weston_pointer_grab *grab);
 };
 
@@ -369,6 +371,9 @@ weston_pointer_create(struct weston_seat *seat);
 void
 weston_pointer_destroy(struct weston_pointer *pointer);
 void
+weston_pointer_send_axis(struct weston_pointer *pointer,
+			 uint32_t time, uint32_t axis, wl_fixed_t value);
+void
 weston_pointer_set_focus(struct weston_pointer *pointer,
 			 struct weston_view *view,
 			 wl_fixed_t sx, wl_fixed_t sy);

src/data-device.c

@@ -410,6 +410,12 @@ drag_grab_button(struct weston_pointer_grab *grab,
 	}
 }
 
+static void
+drag_grab_axis(struct weston_pointer_grab *grab,
+	       uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+}
+
 static void
 drag_grab_cancel(struct weston_pointer_grab *grab)
 {
@@ -426,6 +432,7 @@ static const struct weston_pointer_grab_interface pointer_drag_grab_interface =
 	drag_grab_focus,
 	drag_grab_motion,
 	drag_grab_button,
+	drag_grab_axis,
 	drag_grab_cancel,
 };
 

src/input.c

@@ -221,6 +221,36 @@ default_grab_pointer_button(struct weston_pointer_grab *grab,
 	}
 }
 
+/** Send wl_pointer.axis events to focused resources.
+ *
+ * \param pointer The pointer where the axis events originates from.
+ * \param time The timestamp of the event
+ * \param axis The axis enum value of the event
+ * \param value The axis value of the event
+ *
+ * For every resource that is currently in focus, send a wl_pointer.axis event
+ * with the passed parameters. The focused resources are the wl_pointer
+ * resources of the client which currently has the surface with pointer focus.
+ */
+WL_EXPORT void
+weston_pointer_send_axis(struct weston_pointer *pointer,
+			 uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+	struct wl_resource *resource;
+	struct wl_list *resource_list;
+
+	resource_list = &pointer->focus_resource_list;
+	wl_resource_for_each(resource, resource_list)
+		wl_pointer_send_axis(resource, time, axis, value);
+}
+
+static void
+default_grab_pointer_axis(struct weston_pointer_grab *grab,
+			  uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+	weston_pointer_send_axis(grab->pointer, time, axis, value);
+}
+
 static void
 default_grab_pointer_cancel(struct weston_pointer_grab *grab)
 {
@@ -231,6 +261,7 @@ static const struct weston_pointer_grab_interface
 	default_grab_pointer_focus,
 	default_grab_pointer_motion,
 	default_grab_pointer_button,
+	default_grab_pointer_axis,
 	default_grab_pointer_cancel,
 };
 
@@ -1084,8 +1115,6 @@ notify_axis(struct weston_seat *seat, uint32_t time, uint32_t axis,
 {
 	struct weston_compositor *compositor = seat->compositor;
 	struct weston_pointer *pointer = weston_seat_get_pointer(seat);
-	struct wl_resource *resource;
-	struct wl_list *resource_list;
 
 	weston_compositor_wake(compositor);
 
@@ -1096,10 +1125,7 @@ notify_axis(struct weston_seat *seat, uint32_t time, uint32_t axis,
 					       time, axis, value))
 		return;
 
-	resource_list = &pointer->focus_resource_list;
-	wl_resource_for_each(resource, resource_list)
-		wl_pointer_send_axis(resource, time, axis,
-				     value);
+	pointer->grab->interface->axis(pointer->grab, time, axis, value);
 }
 
 WL_EXPORT int