Split shell object out from compositor.c into its own file
authorKristian Høgsberg <krh@bitplanet.net>
Tue, 18 Jan 2011 12:53:49 +0000 (07:53 -0500)
committerKristian Høgsberg <krh@bitplanet.net>
Tue, 18 Jan 2011 12:53:49 +0000 (07:53 -0500)
compositor/Makefile.am
compositor/compositor.c
compositor/compositor.h
compositor/shell.c [new file with mode: 0644]

index 56a2e7e..89ea443 100644 (file)
@@ -31,6 +31,7 @@ endif
 compositor_SOURCES =                           \
        compositor.c                            \
        compositor.h                            \
+       shell.c                                 \
        screenshooter.c                         \
        screenshooter-protocol.c                \
        screenshooter-server-protocol.h         \
index cd13e4d..31f70cf 100644 (file)
@@ -32,7 +32,7 @@
 #include <math.h>
 #include <linux/input.h>
 
-#include "wayland-server-protocol.h"
+#include "wayland-server.h"
 #include "compositor.h"
 
 /* The plan here is to generate a random anonymous socket name and
@@ -157,7 +157,7 @@ wlsc_surface_create(struct wlsc_compositor *compositor,
        return surface;
 }
 
-static uint32_t
+uint32_t
 get_time(void)
 {
        struct timeval tv;
@@ -359,7 +359,7 @@ wlsc_surface_raise(struct wlsc_surface *surface)
        wl_list_insert(&compositor->surface_list, &surface->link);
 }
 
-static void
+void
 wlsc_surface_update_matrix(struct wlsc_surface *es)
 {
        wlsc_matrix_init(&es->matrix);
@@ -511,7 +511,7 @@ wlsc_input_device_attach(struct wlsc_input_device *device,
 }
 
 
-static void
+void
 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
                                    enum wlsc_pointer_type type)
 {
@@ -524,248 +524,6 @@ wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
                                 pointer_images[type].hotspot_y);
 }
 
-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_surface *es =
-               (struct wlsc_surface *) grab->input_device->pointer_focus;
-
-       es->x = x + move->dx;
-       es->y = y + move->dy;
-       wlsc_surface_update_matrix(es);
-}
-
-static void
-move_grab_button(struct wl_grab *grab,
-                uint32_t time, int32_t button, int32_t state)
-{
-}
-
-static void
-move_grab_end(struct wl_grab *grab, uint32_t time)
-{
-       free(grab);
-}
-
-static const struct wl_grab_interface move_grab_interface = {
-       move_grab_motion,
-       move_grab_button,
-       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->dx = es->x - wd->input_device.grab_x;
-       move->dy = es->y - wd->input_device.grab_y;
-
-       if (wl_input_device_update_grab(&wd->input_device,
-                                       &move->grab, surface, time) < 0)
-               return;
-
-       wlsc_input_device_set_pointer_image(wd, WLSC_POINTER_DRAGGING);
-}
-
-struct wlsc_resize_grab {
-       struct wl_grab grab;
-       uint32_t edges;
-       int32_t dx, dy, width, height;
-};
-
-static void
-resize_grab_motion(struct wl_grab *grab,
-                  uint32_t time, int32_t x, int32_t y)
-{
-       struct wlsc_resize_grab *resize = (struct wlsc_resize_grab *) grab;
-       struct wl_input_device *device = grab->input_device;
-       struct wlsc_compositor *ec =
-               (struct wlsc_compositor *) device->compositor;
-       struct wl_surface *surface = device->pointer_focus;
-       int32_t width, height;
-
-       if (resize->edges & WL_GRAB_RESIZE_LEFT) {
-               width = device->grab_x - x + resize->width;
-       } else if (resize->edges & WL_GRAB_RESIZE_RIGHT) {
-               width = x - device->grab_x + resize->width;
-       } else {
-               width = resize->width;
-       }
-
-       if (resize->edges & WL_GRAB_RESIZE_TOP) {
-               height = device->grab_y - y + resize->height;
-       } else if (resize->edges & WL_GRAB_RESIZE_BOTTOM) {
-               height = y - device->grab_y + resize->height;
-       } else {
-               height = resize->height;
-       }
-
-       wl_client_post_event(surface->client, &ec->shell.object,
-                            WL_SHELL_CONFIGURE, time, resize->edges,
-                            surface, width, height);
-}
-
-static void
-resize_grab_button(struct wl_grab *grab,
-                  uint32_t time, int32_t button, int32_t state)
-{
-}
-
-static void
-resize_grab_end(struct wl_grab *grab, uint32_t time)
-{
-       free(grab);
-}
-
-static const struct wl_grab_interface resize_grab_interface = {
-       resize_grab_motion,
-       resize_grab_button,
-       resize_grab_end
-};
-
-static void
-shell_resize(struct wl_client *client, struct wl_shell *shell,
-            struct wl_surface *surface,
-            struct wl_input_device *device, uint32_t time, uint32_t edges)
-{
-       struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
-       struct wlsc_resize_grab *resize;
-       enum wlsc_pointer_type pointer = WLSC_POINTER_LEFT_PTR;
-       struct wlsc_surface *es = (struct wlsc_surface *) surface;
-
-       resize = malloc(sizeof *resize);
-       if (!resize) {
-               wl_client_post_no_memory(client);
-               return;
-       }
-
-       resize->grab.interface = &resize_grab_interface;
-       resize->edges = edges;
-       resize->dx = es->x - wd->input_device.grab_x;
-       resize->dy = es->y - wd->input_device.grab_y;
-       resize->width = es->width;
-       resize->height = es->height;
-
-       if (edges == 0 || edges > 15 ||
-           (edges & 3) == 3 || (edges & 12) == 12)
-               return;
-
-       switch (edges) {
-       case WL_GRAB_RESIZE_TOP:
-               pointer = WLSC_POINTER_TOP;
-               break;
-       case WL_GRAB_RESIZE_BOTTOM:
-               pointer = WLSC_POINTER_BOTTOM;
-               break;
-       case WL_GRAB_RESIZE_LEFT:
-               pointer = WLSC_POINTER_LEFT;
-               break;
-       case WL_GRAB_RESIZE_TOP_LEFT:
-               pointer = WLSC_POINTER_TOP_LEFT;
-               break;
-       case WL_GRAB_RESIZE_BOTTOM_LEFT:
-               pointer = WLSC_POINTER_BOTTOM_LEFT;
-               break;
-       case WL_GRAB_RESIZE_RIGHT:
-               pointer = WLSC_POINTER_RIGHT;
-               break;
-       case WL_GRAB_RESIZE_TOP_RIGHT:
-               pointer = WLSC_POINTER_TOP_RIGHT;
-               break;
-       case WL_GRAB_RESIZE_BOTTOM_RIGHT:
-               pointer = WLSC_POINTER_BOTTOM_RIGHT;
-               break;
-       }
-
-       if (wl_input_device_update_grab(&wd->input_device,
-                                       &resize->grab, surface, time) < 0)
-               return;
-
-       wlsc_input_device_set_pointer_image(wd, pointer);
-}
-
-static void
-wl_drag_set_pointer_focus(struct wl_drag *drag,
-                         struct wl_surface *surface, uint32_t time,
-                         int32_t x, int32_t y, int32_t sx, int32_t sy);
-
-static void
-destroy_drag(struct wl_resource *resource, struct wl_client *client)
-{
-       struct wl_drag *drag =
-               container_of(resource, struct wl_drag, resource);
-
-       wl_list_remove(&drag->drag_focus_listener.link);
-       if (drag->grab.input_device)
-               wl_input_device_end_grab(drag->grab.input_device, get_time());
-
-       free(drag);
-}
-
-const static struct wl_drag_interface drag_interface;
-
-static void
-drag_handle_surface_destroy(struct wl_listener *listener,
-                           struct wl_surface *surface, uint32_t time)
-{
-       struct wl_drag *drag =
-               container_of(listener, struct wl_drag, drag_focus_listener);
-
-       if (drag->drag_focus == surface)
-               wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
-}
-
-static void
-shell_create_drag(struct wl_client *client,
-                 struct wl_shell *shell, uint32_t id)
-{
-       struct wl_drag *drag;
-
-       drag = malloc(sizeof *drag);
-       if (drag == NULL) {
-               wl_client_post_no_memory(client);
-               return;
-       }
-
-       memset(drag, 0, sizeof *drag);
-       drag->resource.object.id = id;
-       drag->resource.object.interface = &wl_drag_interface;
-       drag->resource.object.implementation =
-               (void (**)(void)) &drag_interface;
-
-       drag->resource.destroy = destroy_drag;
-
-       drag->drag_focus_listener.func = drag_handle_surface_destroy;
-       wl_list_init(&drag->drag_focus_listener.link);
-
-       wl_client_add_resource(client, &drag->resource);
-}
-
-const static struct wl_shell_interface shell_interface = {
-       shell_move,
-       shell_resize,
-       shell_create_drag
-};
-
 static void
 compositor_create_surface(struct wl_client *client,
                          struct wl_compositor *compositor, uint32_t id)
@@ -805,7 +563,7 @@ wlsc_surface_transform(struct wlsc_surface *surface,
        *sy = v.f[1] * surface->height;
 }
 
-static struct wlsc_surface *
+struct wlsc_surface *
 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
 {
        struct wlsc_compositor *ec =
@@ -1010,202 +768,6 @@ notify_key(struct wl_input_device *device,
 }
 
 static void
-wl_drag_set_pointer_focus(struct wl_drag *drag,
-                         struct wl_surface *surface, uint32_t time,
-                         int32_t x, int32_t y, int32_t sx, int32_t sy)
-{
-       char **p, **end;
-
-       if (drag->drag_focus == surface)
-               return;
-
-       if (drag->drag_focus &&
-           (!surface || drag->drag_focus->client != surface->client))
-               wl_client_post_event(drag->drag_focus->client,
-                                     &drag->drag_offer.object,
-                                     WL_DRAG_OFFER_POINTER_FOCUS,
-                                     time, NULL, 0, 0, 0, 0);
-
-       if (surface &&
-           (!drag->drag_focus ||
-            drag->drag_focus->client != surface->client)) {
-               wl_client_post_global(surface->client,
-                                     &drag->drag_offer.object);
-
-               end = drag->types.data + drag->types.size;
-               for (p = drag->types.data; p < end; p++)
-                       wl_client_post_event(surface->client,
-                                             &drag->drag_offer.object,
-                                             WL_DRAG_OFFER_OFFER, *p);
-       }
-
-       if (surface) {
-               wl_client_post_event(surface->client,
-                                    &drag->drag_offer.object,
-                                    WL_DRAG_OFFER_POINTER_FOCUS,
-                                    time, surface,
-                                    x, y, sx, sy);
-
-       }
-
-       drag->drag_focus = surface;
-       drag->pointer_focus_time = time;
-       drag->target = NULL;
-
-       wl_list_remove(&drag->drag_focus_listener.link);
-       if (surface)
-               wl_list_insert(surface->destroy_listener_list.prev,
-                              &drag->drag_focus_listener.link);
-}
-
-static void
-drag_offer_accept(struct wl_client *client,
-                 struct wl_drag_offer *offer, uint32_t time, const char *type)
-{
-       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
-       char **p, **end;
-
-       /* If the client responds to drag pointer_focus or motion
-        * events after the pointer has left the surface, we just
-        * discard the accept requests.  The drag source just won't
-        * get the corresponding 'target' events and eventually the
-        * next surface/root will start sending events. */
-       if (time < drag->pointer_focus_time)
-               return;
-
-       drag->target = client;
-       drag->type = NULL;
-       end = drag->types.data + drag->types.size;
-       for (p = drag->types.data; p < end; p++)
-               if (type && strcmp(*p, type) == 0)
-                       drag->type = *p;
-
-       wl_client_post_event(drag->source->client, &drag->resource.object,
-                            WL_DRAG_TARGET, drag->type);
-}
-
-static void
-drag_offer_receive(struct wl_client *client,
-                  struct wl_drag_offer *offer, int fd)
-{
-       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
-
-       wl_client_post_event(drag->source->client, &drag->resource.object,
-                            WL_DRAG_FINISH, fd);
-       close(fd);
-}
-
-static void
-drag_offer_reject(struct wl_client *client, struct wl_drag_offer *offer)
-{
-       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
-
-       wl_client_post_event(drag->source->client, &drag->resource.object,
-                            WL_DRAG_REJECT);
-}
-
-static const struct wl_drag_offer_interface drag_offer_interface = {
-       drag_offer_accept,
-       drag_offer_receive,
-       drag_offer_reject
-};
-
-static void
-drag_offer(struct wl_client *client, struct wl_drag *drag, const char *type)
-{
-       char **p;
-
-       p = wl_array_add(&drag->types, sizeof *p);
-       if (p)
-               *p = strdup(type);
-       if (!p || !*p)
-               wl_client_post_no_memory(client);
-}
-
-static void
-drag_grab_motion(struct wl_grab *grab,
-                  uint32_t time, int32_t x, int32_t y)
-{
-       struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
-       struct wlsc_surface *es;
-       int32_t sx, sy;
-
-       es = pick_surface(grab->input_device, &sx, &sy);
-       wl_drag_set_pointer_focus(drag, &es->surface, time, x, y, sx, sy);
-       if (es)
-               wl_client_post_event(es->surface.client,
-                                    &drag->drag_offer.object,
-                                    WL_DRAG_OFFER_MOTION,
-                                    time, x, y, sx, sy);
-}
-
-static void
-drag_grab_button(struct wl_grab *grab,
-                uint32_t time, int32_t button, int32_t state)
-{
-}
-
-static void
-drag_grab_end(struct wl_grab *grab, uint32_t time)
-{
-       struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
-
-       if (drag->target)
-               wl_client_post_event(drag->target,
-                                    &drag->drag_offer.object,
-                                    WL_DRAG_OFFER_DROP);
-
-       wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
-}
-
-static const struct wl_grab_interface drag_grab_interface = {
-       drag_grab_motion,
-       drag_grab_button,
-       drag_grab_end
-};
-
-static void
-drag_activate(struct wl_client *client,
-             struct wl_drag *drag,
-             struct wl_surface *surface,
-             struct wl_input_device *device, uint32_t time)
-{
-       struct wl_display *display = wl_client_get_display (client);
-       struct wlsc_surface *target;
-       int32_t sx, sy;
-
-       if (wl_input_device_update_grab(device,
-                                       &drag->grab, surface, time) < 0)
-               return;
-
-       drag->grab.interface = &drag_grab_interface;
-
-       drag->source = surface;
-
-       drag->drag_offer.object.interface = &wl_drag_offer_interface;
-       drag->drag_offer.object.implementation =
-               (void (**)(void)) &drag_offer_interface;
-
-       wl_display_add_object(display, &drag->drag_offer.object);
-
-       target = pick_surface(device, &sx, &sy);
-       wl_drag_set_pointer_focus(drag, &target->surface, time,
-                                 device->x, device->y, sx, sy);
-}
-
-static void
-drag_destroy(struct wl_client *client, struct wl_drag *drag)
-{
-       wl_resource_destroy(&drag->resource, client);
-}
-
-static const struct wl_drag_interface drag_interface = {
-       drag_offer,
-       drag_activate,
-       drag_destroy,
-};
-
-static void
 input_device_attach(struct wl_client *client,
                    struct wl_input_device *device_base,
                    uint32_t time,
@@ -1410,11 +972,7 @@ wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
 
        wlsc_shm_init(ec);
 
-       ec->shell.object.interface = &wl_shell_interface;
-       ec->shell.object.implementation = (void (**)(void)) &shell_interface;
-       wl_display_add_object(display, &ec->shell.object);
-       if (wl_display_add_global(display, &ec->shell.object, NULL))
-               return -1;
+       wlsc_shell_init(ec);
 
        wl_list_init(&ec->surface_list);
        wl_list_init(&ec->input_device_list);
index dd7f534..6ca7242 100644 (file)
@@ -142,6 +142,9 @@ struct wlsc_surface {
 };
 
 void
+wlsc_surface_update_matrix(struct wlsc_surface *es);
+
+void
 notify_motion(struct wl_input_device *device,
              uint32_t time, int x, int y);
 void
@@ -156,6 +159,15 @@ wlsc_compositor_finish_frame(struct wlsc_compositor *compositor, int msecs);
 void
 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor);
 
+void
+wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
+                                   enum wlsc_pointer_type type);
+struct wlsc_surface *
+pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy);
+
+uint32_t
+get_time(void);
+
 struct wl_buffer *
 wlsc_drm_buffer_create(struct wlsc_compositor *ec,
                       int width, int height,
@@ -175,6 +187,19 @@ wlsc_drm_init(struct wlsc_compositor *ec, int fd, const char *filename);
 int
 wlsc_shm_init(struct wlsc_compositor *ec);
 
+int
+wlsc_shell_init(struct wlsc_compositor *ec);
+
+void
+shell_move(struct wl_client *client, struct wl_shell *shell,
+          struct wl_surface *surface,
+          struct wl_input_device *device, uint32_t time);
+
+void
+shell_resize(struct wl_client *client, struct wl_shell *shell,
+            struct wl_surface *surface,
+            struct wl_input_device *device, uint32_t time, uint32_t edges);
+
 struct wl_buffer *
 wl_buffer_create_drm(struct wlsc_compositor *compositor,
                     struct wl_visual *visual);
diff --git a/compositor/shell.c b/compositor/shell.c
new file mode 100644 (file)
index 0000000..a0331e2
--- /dev/null
@@ -0,0 +1,479 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "wayland-server.h"
+#include "compositor.h"
+
+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_surface *es =
+               (struct wlsc_surface *) grab->input_device->pointer_focus;
+
+       es->x = x + move->dx;
+       es->y = y + move->dy;
+       wlsc_surface_update_matrix(es);
+}
+
+static void
+move_grab_button(struct wl_grab *grab,
+                uint32_t time, int32_t button, int32_t state)
+{
+}
+
+static void
+move_grab_end(struct wl_grab *grab, uint32_t time)
+{
+       free(grab);
+}
+
+static const struct wl_grab_interface move_grab_interface = {
+       move_grab_motion,
+       move_grab_button,
+       move_grab_end
+};
+
+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->dx = es->x - wd->input_device.grab_x;
+       move->dy = es->y - wd->input_device.grab_y;
+
+       if (wl_input_device_update_grab(&wd->input_device,
+                                       &move->grab, surface, time) < 0)
+               return;
+
+       wlsc_input_device_set_pointer_image(wd, WLSC_POINTER_DRAGGING);
+}
+
+struct wlsc_resize_grab {
+       struct wl_grab grab;
+       uint32_t edges;
+       int32_t dx, dy, width, height;
+};
+
+static void
+resize_grab_motion(struct wl_grab *grab,
+                  uint32_t time, int32_t x, int32_t y)
+{
+       struct wlsc_resize_grab *resize = (struct wlsc_resize_grab *) grab;
+       struct wl_input_device *device = grab->input_device;
+       struct wlsc_compositor *ec =
+               (struct wlsc_compositor *) device->compositor;
+       struct wl_surface *surface = device->pointer_focus;
+       int32_t width, height;
+
+       if (resize->edges & WL_GRAB_RESIZE_LEFT) {
+               width = device->grab_x - x + resize->width;
+       } else if (resize->edges & WL_GRAB_RESIZE_RIGHT) {
+               width = x - device->grab_x + resize->width;
+       } else {
+               width = resize->width;
+       }
+
+       if (resize->edges & WL_GRAB_RESIZE_TOP) {
+               height = device->grab_y - y + resize->height;
+       } else if (resize->edges & WL_GRAB_RESIZE_BOTTOM) {
+               height = y - device->grab_y + resize->height;
+       } else {
+               height = resize->height;
+       }
+
+       wl_client_post_event(surface->client, &ec->shell.object,
+                            WL_SHELL_CONFIGURE, time, resize->edges,
+                            surface, width, height);
+}
+
+static void
+resize_grab_button(struct wl_grab *grab,
+                  uint32_t time, int32_t button, int32_t state)
+{
+}
+
+static void
+resize_grab_end(struct wl_grab *grab, uint32_t time)
+{
+       free(grab);
+}
+
+static const struct wl_grab_interface resize_grab_interface = {
+       resize_grab_motion,
+       resize_grab_button,
+       resize_grab_end
+};
+
+void
+shell_resize(struct wl_client *client, struct wl_shell *shell,
+            struct wl_surface *surface,
+            struct wl_input_device *device, uint32_t time, uint32_t edges)
+{
+       struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
+       struct wlsc_resize_grab *resize;
+       enum wlsc_pointer_type pointer = WLSC_POINTER_LEFT_PTR;
+       struct wlsc_surface *es = (struct wlsc_surface *) surface;
+
+       resize = malloc(sizeof *resize);
+       if (!resize) {
+               wl_client_post_no_memory(client);
+               return;
+       }
+
+       resize->grab.interface = &resize_grab_interface;
+       resize->edges = edges;
+       resize->dx = es->x - wd->input_device.grab_x;
+       resize->dy = es->y - wd->input_device.grab_y;
+       resize->width = es->width;
+       resize->height = es->height;
+
+       if (edges == 0 || edges > 15 ||
+           (edges & 3) == 3 || (edges & 12) == 12)
+               return;
+
+       switch (edges) {
+       case WL_GRAB_RESIZE_TOP:
+               pointer = WLSC_POINTER_TOP;
+               break;
+       case WL_GRAB_RESIZE_BOTTOM:
+               pointer = WLSC_POINTER_BOTTOM;
+               break;
+       case WL_GRAB_RESIZE_LEFT:
+               pointer = WLSC_POINTER_LEFT;
+               break;
+       case WL_GRAB_RESIZE_TOP_LEFT:
+               pointer = WLSC_POINTER_TOP_LEFT;
+               break;
+       case WL_GRAB_RESIZE_BOTTOM_LEFT:
+               pointer = WLSC_POINTER_BOTTOM_LEFT;
+               break;
+       case WL_GRAB_RESIZE_RIGHT:
+               pointer = WLSC_POINTER_RIGHT;
+               break;
+       case WL_GRAB_RESIZE_TOP_RIGHT:
+               pointer = WLSC_POINTER_TOP_RIGHT;
+               break;
+       case WL_GRAB_RESIZE_BOTTOM_RIGHT:
+               pointer = WLSC_POINTER_BOTTOM_RIGHT;
+               break;
+       }
+
+       if (wl_input_device_update_grab(&wd->input_device,
+                                       &resize->grab, surface, time) < 0)
+               return;
+
+       wlsc_input_device_set_pointer_image(wd, pointer);
+}
+
+static void
+wl_drag_set_pointer_focus(struct wl_drag *drag,
+                         struct wl_surface *surface, uint32_t time,
+                         int32_t x, int32_t y, int32_t sx, int32_t sy);
+
+static void
+destroy_drag(struct wl_resource *resource, struct wl_client *client)
+{
+       struct wl_drag *drag =
+               container_of(resource, struct wl_drag, resource);
+
+       wl_list_remove(&drag->drag_focus_listener.link);
+       if (drag->grab.input_device)
+               wl_input_device_end_grab(drag->grab.input_device, get_time());
+
+       free(drag);
+}
+
+
+static void
+wl_drag_set_pointer_focus(struct wl_drag *drag,
+                         struct wl_surface *surface, uint32_t time,
+                         int32_t x, int32_t y, int32_t sx, int32_t sy)
+{
+       char **p, **end;
+
+       if (drag->drag_focus == surface)
+               return;
+
+       if (drag->drag_focus &&
+           (!surface || drag->drag_focus->client != surface->client))
+               wl_client_post_event(drag->drag_focus->client,
+                                     &drag->drag_offer.object,
+                                     WL_DRAG_OFFER_POINTER_FOCUS,
+                                     time, NULL, 0, 0, 0, 0);
+
+       if (surface &&
+           (!drag->drag_focus ||
+            drag->drag_focus->client != surface->client)) {
+               wl_client_post_global(surface->client,
+                                     &drag->drag_offer.object);
+
+               end = drag->types.data + drag->types.size;
+               for (p = drag->types.data; p < end; p++)
+                       wl_client_post_event(surface->client,
+                                             &drag->drag_offer.object,
+                                             WL_DRAG_OFFER_OFFER, *p);
+       }
+
+       if (surface) {
+               wl_client_post_event(surface->client,
+                                    &drag->drag_offer.object,
+                                    WL_DRAG_OFFER_POINTER_FOCUS,
+                                    time, surface,
+                                    x, y, sx, sy);
+
+       }
+
+       drag->drag_focus = surface;
+       drag->pointer_focus_time = time;
+       drag->target = NULL;
+
+       wl_list_remove(&drag->drag_focus_listener.link);
+       if (surface)
+               wl_list_insert(surface->destroy_listener_list.prev,
+                              &drag->drag_focus_listener.link);
+}
+
+static void
+drag_offer_accept(struct wl_client *client,
+                 struct wl_drag_offer *offer, uint32_t time, const char *type)
+{
+       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
+       char **p, **end;
+
+       /* If the client responds to drag pointer_focus or motion
+        * events after the pointer has left the surface, we just
+        * discard the accept requests.  The drag source just won't
+        * get the corresponding 'target' events and eventually the
+        * next surface/root will start sending events. */
+       if (time < drag->pointer_focus_time)
+               return;
+
+       drag->target = client;
+       drag->type = NULL;
+       end = drag->types.data + drag->types.size;
+       for (p = drag->types.data; p < end; p++)
+               if (type && strcmp(*p, type) == 0)
+                       drag->type = *p;
+
+       wl_client_post_event(drag->source->client, &drag->resource.object,
+                            WL_DRAG_TARGET, drag->type);
+}
+
+static void
+drag_offer_receive(struct wl_client *client,
+                  struct wl_drag_offer *offer, int fd)
+{
+       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
+
+       wl_client_post_event(drag->source->client, &drag->resource.object,
+                            WL_DRAG_FINISH, fd);
+       close(fd);
+}
+
+static void
+drag_offer_reject(struct wl_client *client, struct wl_drag_offer *offer)
+{
+       struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
+
+       wl_client_post_event(drag->source->client, &drag->resource.object,
+                            WL_DRAG_REJECT);
+}
+
+static const struct wl_drag_offer_interface drag_offer_interface = {
+       drag_offer_accept,
+       drag_offer_receive,
+       drag_offer_reject
+};
+
+static void
+drag_offer(struct wl_client *client, struct wl_drag *drag, const char *type)
+{
+       char **p;
+
+       p = wl_array_add(&drag->types, sizeof *p);
+       if (p)
+               *p = strdup(type);
+       if (!p || !*p)
+               wl_client_post_no_memory(client);
+}
+
+static void
+drag_grab_motion(struct wl_grab *grab,
+                  uint32_t time, int32_t x, int32_t y)
+{
+       struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
+       struct wlsc_surface *es;
+       int32_t sx, sy;
+
+       es = pick_surface(grab->input_device, &sx, &sy);
+       wl_drag_set_pointer_focus(drag, &es->surface, time, x, y, sx, sy);
+       if (es)
+               wl_client_post_event(es->surface.client,
+                                    &drag->drag_offer.object,
+                                    WL_DRAG_OFFER_MOTION,
+                                    time, x, y, sx, sy);
+}
+
+static void
+drag_grab_button(struct wl_grab *grab,
+                uint32_t time, int32_t button, int32_t state)
+{
+}
+
+static void
+drag_grab_end(struct wl_grab *grab, uint32_t time)
+{
+       struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
+
+       if (drag->target)
+               wl_client_post_event(drag->target,
+                                    &drag->drag_offer.object,
+                                    WL_DRAG_OFFER_DROP);
+
+       wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
+}
+
+static const struct wl_grab_interface drag_grab_interface = {
+       drag_grab_motion,
+       drag_grab_button,
+       drag_grab_end
+};
+
+static void
+drag_activate(struct wl_client *client,
+             struct wl_drag *drag,
+             struct wl_surface *surface,
+             struct wl_input_device *device, uint32_t time)
+{
+       struct wl_display *display = wl_client_get_display (client);
+       struct wlsc_surface *target;
+       int32_t sx, sy;
+
+       if (wl_input_device_update_grab(device,
+                                       &drag->grab, surface, time) < 0)
+               return;
+
+       drag->grab.interface = &drag_grab_interface;
+
+       drag->source = surface;
+
+       drag->drag_offer.object.interface = &wl_drag_offer_interface;
+       drag->drag_offer.object.implementation =
+               (void (**)(void)) &drag_offer_interface;
+
+       wl_display_add_object(display, &drag->drag_offer.object);
+
+       target = pick_surface(device, &sx, &sy);
+       wl_drag_set_pointer_focus(drag, &target->surface, time,
+                                 device->x, device->y, sx, sy);
+}
+
+static void
+drag_destroy(struct wl_client *client, struct wl_drag *drag)
+{
+       wl_resource_destroy(&drag->resource, client);
+}
+
+static const struct wl_drag_interface drag_interface = {
+       drag_offer,
+       drag_activate,
+       drag_destroy,
+};
+
+static void
+drag_handle_surface_destroy(struct wl_listener *listener,
+                           struct wl_surface *surface, uint32_t time)
+{
+       struct wl_drag *drag =
+               container_of(listener, struct wl_drag, drag_focus_listener);
+
+       if (drag->drag_focus == surface)
+               wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
+}
+
+static void
+shell_create_drag(struct wl_client *client,
+                 struct wl_shell *shell, uint32_t id)
+{
+       struct wl_drag *drag;
+
+       drag = malloc(sizeof *drag);
+       if (drag == NULL) {
+               wl_client_post_no_memory(client);
+               return;
+       }
+
+       memset(drag, 0, sizeof *drag);
+       drag->resource.object.id = id;
+       drag->resource.object.interface = &wl_drag_interface;
+       drag->resource.object.implementation =
+               (void (**)(void)) &drag_interface;
+
+       drag->resource.destroy = destroy_drag;
+
+       drag->drag_focus_listener.func = drag_handle_surface_destroy;
+       wl_list_init(&drag->drag_focus_listener.link);
+
+       wl_client_add_resource(client, &drag->resource);
+}
+
+const static struct wl_shell_interface shell_interface = {
+       shell_move,
+       shell_resize,
+       shell_create_drag
+};
+
+int
+wlsc_shell_init(struct wlsc_compositor *ec)
+{
+       struct wl_shell *shell = &ec->shell;
+
+       shell->object.interface = &wl_shell_interface;
+       shell->object.implementation = (void (**)(void)) &shell_interface;
+       wl_display_add_object(ec->wl_display, &shell->object);
+       if (wl_display_add_global(ec->wl_display, &shell->object, NULL))
+               return -1;
+
+       return 0;
+}