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/*
* Copyright © 2011 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 <stdio.h>
#include <linux/input.h>
#include "compositor.h"
struct weston_switcher {
struct weston_compositor *compositor;
struct weston_surface *current;
struct wl_listener listener;
};
static void
weston_switcher_next(struct weston_switcher *switcher)
{
struct wl_list *l;
struct wl_surface *current;
weston_surface_damage(switcher->current);
l = switcher->current->link.next;
if (l == &switcher->compositor->surface_list)
l = switcher->compositor->surface_list.next;
switcher->current = container_of(l, struct weston_surface, link);
wl_list_remove(&switcher->listener.link);
current = &switcher->current->surface;
wl_list_insert(current->resource.destroy_listener_list.prev,
&switcher->listener.link);
switcher->compositor->overlay = switcher->current;
weston_surface_damage(switcher->current);
}
static void
switcher_handle_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
struct weston_switcher *switcher =
container_of(listener, struct weston_switcher, listener);
weston_switcher_next(switcher);
}
static struct weston_switcher *
weston_switcher_create(struct weston_compositor *compositor)
{
struct weston_switcher *switcher;
switcher = malloc(sizeof *switcher);
switcher->compositor = compositor;
switcher->current = container_of(compositor->surface_list.next,
struct weston_surface, link);
switcher->listener.func = switcher_handle_surface_destroy;
wl_list_init(&switcher->listener.link);
return switcher;
}
static void
weston_switcher_destroy(struct weston_switcher *switcher)
{
wl_list_remove(&switcher->listener.link);
free(switcher);
}
static void
switcher_next_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button,
uint32_t state, void *data)
{
struct weston_compositor *compositor = data;
if (!state)
return;
if (wl_list_empty(&compositor->surface_list))
return;
if (compositor->switcher == NULL)
compositor->switcher = weston_switcher_create(compositor);
weston_switcher_next(compositor->switcher);
}
static void
switcher_terminate_binding(struct wl_input_device *device,
uint32_t time, uint32_t key, uint32_t button,
uint32_t state, void *data)
{
struct weston_compositor *compositor = data;
struct weston_input_device *wd = (struct weston_input_device *) device;
if (compositor->switcher && !state) {
weston_surface_activate(compositor->switcher->current, wd, time);
weston_switcher_destroy(compositor->switcher);
compositor->switcher = NULL;
compositor->overlay = NULL;
}
}
void
weston_switcher_init(struct weston_compositor *compositor)
{
weston_compositor_add_binding(compositor,
KEY_TAB, 0, MODIFIER_SUPER,
switcher_next_binding, compositor);
weston_compositor_add_binding(compositor,
KEY_LEFTMETA, 0, MODIFIER_SUPER,
switcher_terminate_binding, compositor);
weston_compositor_add_binding(compositor,
KEY_RIGHTMETA, 0, MODIFIER_SUPER,
switcher_terminate_binding, compositor);
}
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