Handle shell.move using a grab object

diff --git a/compositor/compositor.c b/compositor/compositor.c
index 103b23f..cea88c9 100644 (file)
--- a/compositor/compositor.c
+++ b/compositor/compositor.c
@@ -543,18 +543,70 @@ wlsc_input_device_update_grab(struct wlsc_input_device *device,
        return 0;
 }
 
+struct wlsc_move_grab {
+       struct wl_grab grab;
+       int32_t dx, dy;
+};
+
+static void
+move_grab_motion(struct wl_grab *grab,
+                  uint32_t time, int32_t x, int32_t y)
+{
+       struct wlsc_move_grab *move = (struct wlsc_move_grab *) grab;
+       struct wlsc_input_device *device =
+               (struct wlsc_input_device *) grab->input_device;
+       struct wlsc_surface *es =
+               (struct wlsc_surface *) device->input_device.pointer_focus;
+
+       es->x = x + move->dx;
+       es->y = y + move->dy;
+       wl_client_post_event(es->surface.client,
+                            &device->ec->shell.object,
+                            WL_SHELL_CONFIGURE,
+                            time, WLSC_DEVICE_GRAB_MOVE,
+                            &es->surface, es->x, es->y,
+                            es->width, es->height);
+
+       wlsc_surface_update_matrix(es);
+}
+
+static void
+move_grab_end(struct wl_grab *grab)
+{
+       free(grab);
+}
+
+static const struct wl_grab_interface move_grab_interface = {
+       move_grab_motion,
+       move_grab_end
+};
+
 static void
 shell_move(struct wl_client *client, struct wl_shell *shell,
           struct wl_surface *surface,
           struct wl_input_device *device, uint32_t time)
 {
        struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
+       struct wlsc_surface *es = (struct wlsc_surface *) surface;
+       struct wlsc_move_grab *move;
+
+       move = malloc(sizeof *move);
+       if (!move) {
+               wl_client_post_no_memory(client);
+               return;
+       }
+
+       move->grab.interface = &move_grab_interface;
+       move->grab.input_device = device;
+       move->dx = es->x - wd->grab_x;
+       move->dy = es->y - wd->grab_y;
 
        if (wlsc_input_device_update_grab(wd, WLSC_DEVICE_GRAB_MOVE,
                                          surface, time) < 0)
                return;
 
        wlsc_input_device_set_pointer_image(wd, WLSC_POINTER_DRAGGING);
+       wd->grab_object = &move->grab;
 }
 
 struct wlsc_resize_grab {
@@ -608,7 +660,7 @@ resize_grab_end(struct wl_grab *grab)
        free(grab);
 }
 
-struct wl_grab_interface resize_grab_interface = {
+static const struct wl_grab_interface resize_grab_interface = {
        resize_grab_motion,
        resize_grab_end
 };
@@ -798,7 +850,7 @@ notify_motion(struct wlsc_input_device *device, uint32_t time, int x, int y)
        struct wlsc_surface *es;
        struct wlsc_compositor *ec = device->ec;
        struct wlsc_output *output;
-       struct wl_grab_interface *interface;
+       const struct wl_grab_interface *interface;
        int32_t sx, sy;
 
        /* FIXME: We need some multi head love here. */
@@ -842,21 +894,6 @@ notify_motion(struct wlsc_input_device *device, uint32_t time, int x, int y)
                                     time, x, y, sx, sy);
                break;
 
-       case WLSC_DEVICE_GRAB_MOVE:
-               es = (struct wlsc_surface *) device->input_device.pointer_focus;
-               es->x = x + device->grab_dx;
-               es->y = y + device->grab_dy;;
-               wl_client_post_event(es->surface.client,
-                                    &ec->shell.object,
-                                    WL_SHELL_CONFIGURE,
-                                    time, device->grab,
-                                    &es->surface, es->x, es->y,
-                                    es->width, es->height);
-
-               wlsc_surface_update_matrix(es);
-
-               break;
-
        case WLSC_DEVICE_GRAB_DRAG:
                es = pick_surface(device, &sx, &sy);
                wl_drag_set_pointer_focus(device->drag,
@@ -885,7 +922,7 @@ wlsc_input_device_end_grab(struct wlsc_input_device *device, uint32_t time)
 {
        struct wl_drag *drag = device->drag;
        struct wlsc_surface *es;
-       struct wl_grab_interface *interface;
+       const struct wl_grab_interface *interface;
        int32_t sx, sy;
 
        if (device->grab_object) {
@@ -917,7 +954,6 @@ notify_button(struct wlsc_input_device *device,
 {
        struct wlsc_surface *surface;
        struct wlsc_compositor *compositor = device->ec;
-       struct wl_grab_interface *interface;
        struct wl_drag *drag = device->drag;
 
        surface = (struct wlsc_surface *) device->input_device.pointer_focus;
@@ -960,9 +996,7 @@ notify_button(struct wlsc_input_device *device,
        if (!state &&
            device->grab_object &&
            device->grab_button == button) {
-               interface = device->grab_object->interface;
-               interface->end(device->grab_object);
-               
+               wlsc_input_device_end_grab(device, time);
        } else if (!state &&
                   device->grab != WLSC_DEVICE_GRAB_NONE &&
                   device->grab_button == button) {

diff --git a/compositor/compositor.h b/compositor/compositor.h
index 27abcf9..74eea00 100644 (file)
--- a/compositor/compositor.h
+++ b/compositor/compositor.h
@@ -89,7 +89,7 @@ struct wl_grab_interface {
 };
 
 struct wl_grab {
-       struct wl_grab_interface *interface;
+       const struct wl_grab_interface *interface;
        struct wl_input_device *input_device;
 };