if the unplugged output isn't the default output, move cursor
and APP widow to default output

Signed-off-by: Xiong Zhang <xiong.y.zh...@intel.com>
---
 src/shell.c | 190 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 186 insertions(+), 4 deletions(-)

diff --git a/src/shell.c b/src/shell.c
index dfcb525..16d22f1 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -6061,15 +6061,197 @@ workspace_move_surface_down_binding(struct weston_seat 
*seat, uint32_t time,
        take_surface_to_workspace_by_seat(shell, seat, new_index);
 }
 
+/* if (*x, *y) will be moved beyong target_output, clamp it*/
+static int
+clamp_coordinate(struct weston_output *target_output,
+                       struct weston_output *original_output,
+                       float *x, float *y)
+{
+       int32_t rel_x, rel_y;
+       int result = 0;
+
+       rel_x = *x - original_output->x;
+       rel_y = *y - original_output->y;
+
+       if (rel_x > target_output->width) {
+               *x = original_output->x + target_output->width / 4;
+               result = 1;
+       }
+       if (rel_y > target_output->height) {
+               *y = original_output->y + target_output->height / 4;
+               result = 1;
+       }
+       return result;
+}
+
+static void
+handle_view_on_destroyed_output(struct weston_view *view,
+                                       struct weston_output *target_output)
+{
+       float new_x, new_y, original_x, original_y;
+
+       /* the child window's view->geometry is a relative coordinate to */
+       /* parent view, no need to move child_view */
+       if (view->geometry.parent)
+               return;
+
+       original_x = view->geometry.x;
+       original_y = view->geometry.y;
+
+       clamp_coordinate(target_output, view->output,
+                       &original_x, &original_y);
+
+       new_x = target_output->x + original_x - view->output->x;
+       new_y = target_output->y + original_y - view->output->y;
+       weston_view_set_position(view, new_x, new_y);
+}
+
+static void
+normal_view_on_destroyed_output(struct shell_output *shell_output,
+                                               struct weston_output 
*target_output)
+{
+       struct weston_output *del_output = shell_output->output;
+       struct desktop_shell *shell = shell_output->shell;
+       struct weston_view  *view;
+       unsigned int i;
+       struct workspace *ws;
+       struct shell_surface *shsurf;
+       enum shell_surface_type surface_type = SHELL_SURFACE_NONE;
+       struct wl_client *client;
+
+       /*if view on destroyed output, move it to target output*/
+       for (i = 0; i < shell->workspaces.num; i++) {
+               ws = get_workspace(shell, i);
+               wl_list_for_each(view, &ws->layer.view_list, layer_link) {
+                       if (view->output == del_output) {
+                               handle_view_on_destroyed_output(view, 
target_output);
+                               surface_type = 
get_shell_surface_type(view->surface);
+                               /*if surface is maximized, resize it to target 
output*/
+                               if (surface_type == SHELL_SURFACE_MAXIMIZED) {
+                                       shsurf = 
get_shell_surface(view->surface);
+                                       shsurf->type = SHELL_SURFACE_NONE;
+                                       client = 
wl_resource_get_client(shsurf->resource);
+                                       shell_surface_set_maximized(client,
+                                                                               
                shsurf->resource,
+                                               
wl_resource_find_for_client(&target_output->resource_list, client));
+                               }
+                       }
+               }
+       }
+}
+
+static void
+full_screen_view_on_destroyed_output(struct shell_output *shell_output,
+                                               struct weston_output 
*target_output)
+{
+       struct weston_output *del_output = shell_output->output;
+       struct desktop_shell *shell = shell_output->shell;
+       struct weston_view  *view;
+       struct shell_surface *shsurf;
+
+       /*if view on destroyed output is fullscreen, resize it and associated 
black_view */
+       /*to target_output */
+       shsurf = NULL;
+       wl_list_for_each(view, &shell->fullscreen_layer.view_list, layer_link) {
+               /* fullscreen.black_view followed fullscreen.view */
+               if (shsurf && shsurf->fullscreen.black_view == view) {
+                       handle_view_on_destroyed_output(view, target_output);
+                       weston_view_configure(view, target_output->x, 
target_output->y,
+                                                               
target_output->width, target_output->height);
+                       pixman_region32_fini(&view->surface->opaque);
+                       pixman_region32_init_rect(&view->surface->opaque, 0, 0,
+                                                                       
target_output->width, target_output->height);
+                       pixman_region32_fini(&view->surface->input);
+                       pixman_region32_init_rect(&view->surface->input, 0, 0,
+                                                                       
target_output->width, target_output->height);
+                       continue;
+               }
+               shsurf = get_shell_surface(view->surface);
+               if (shsurf->fullscreen_output == del_output) {
+                       handle_view_on_destroyed_output(view, target_output);
+                       shsurf->type = SHELL_SURFACE_NONE;
+                       set_fullscreen(shsurf,
+                                                  shsurf->fullscreen.type,
+                                                  shsurf->fullscreen.framerate,
+                                                  target_output);
+               }
+       }
+}
+
+static void
+pointer_on_destroyed_output(struct shell_output *shell_output,
+                                       struct weston_output *target_output)
+{
+       struct weston_output *del_output = shell_output->output;
+       struct weston_compositor *wc = del_output->compositor;
+       struct weston_seat *seat;
+       struct weston_pointer *pointer;
+       wl_fixed_t dx, dy;
+       float pointer_x, pointer_y;
+       struct wl_list *resource_list;
+       struct wl_resource *resource;
+
+       /*if cursor exist in destroyed output, issue a fake motion to move 
cursor to target_output*/
+       wl_list_for_each(seat, &wc->seat_list, link) {
+               if (!seat->pointer)
+                       continue;
+               pointer = seat->pointer;
+               pointer_x = wl_fixed_to_double(pointer->x);
+               pointer_y = wl_fixed_to_double(pointer->y);
+               if (!pixman_region32_contains_point(&del_output->region,
+                                               pointer_x, pointer_y, NULL))
+                       continue;
+               if (clamp_coordinate(target_output, del_output, &pointer_x, 
&pointer_y)) {
+                       pointer->x = wl_fixed_from_double(pointer_x);
+                       pointer->y = wl_fixed_from_double(pointer_y);
+               }
+               dx = wl_fixed_from_int(target_output->x - del_output->x);
+               dy = wl_fixed_from_int(target_output->y - del_output->y);
+               pointer->x += dx;
+               pointer->y += dy;
+               if (pointer->sprite)
+                       handle_view_on_destroyed_output(pointer->sprite, 
target_output);
+               pointer->grab->interface->focus(pointer->grab);
+               resource_list = &pointer->focus_resource_list;
+               wl_resource_for_each(resource, resource_list) {
+                       weston_view_from_global_fixed(pointer->focus,
+                                       pointer->x, pointer->y,
+                                       &dx, &dy);
+                       wl_pointer_send_motion(resource,
+                                       weston_compositor_get_time(),
+                                       dx, dy);
+               }
+       }
+}
+
 static void
 handle_output_destroy(struct wl_listener *listener, void *data)
 {
-       struct shell_output *output_listener =
+       struct shell_output *shell_output =
                container_of(listener, struct shell_output, destroy_listener);
+       struct weston_output *output = (struct weston_output *)data;
+       struct weston_compositor *wc = output->compositor;
+       struct weston_output *default_output, *target_output = NULL;
+
+       default_output = get_default_output(wc);
+       /* if default output is the only output in output_list, or destroyed
+          output is default output, return*/
+       if ((default_output->link.prev == default_output->link.next) ||
+               (default_output == output))
+               goto exit_handler;
+
+       target_output = default_output;
+
+       normal_view_on_destroyed_output(shell_output, target_output);
+       full_screen_view_on_destroyed_output(shell_output, target_output);
+       pointer_on_destroyed_output(shell_output, target_output);
+
+       weston_output_schedule_repaint(target_output);
 
-       wl_list_remove(&output_listener->destroy_listener.link);
-       wl_list_remove(&output_listener->link);
-       free(output_listener);
+exit_handler:
+       wl_list_remove(&shell_output->destroy_listener.link);
+       wl_list_remove(&shell_output->link);
+       free(shell_output);
 }
 
 static void
-- 
1.8.3.2

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