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weston/compositor/shell.c

846 lines
22 KiB

/*
* 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 <linux/input.h>
#include "wayland-server.h"
#include "compositor.h"
struct wl_shell {
struct wl_object object;
struct wlsc_shell shell;
};
struct wlsc_move_grab {
struct wl_grab grab;
struct wlsc_surface *surface;
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 = move->surface;
wlsc_surface_damage(es);
es->x = x + move->dx;
es->y = y + move->dy;
wlsc_surface_assign_output(es);
wlsc_surface_damage(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)
{
struct wlsc_surface *es;
struct wl_input_device *device = grab->input_device;
int32_t sx, sy;
es = pick_surface(grab->input_device, &sx, &sy);
wl_input_device_set_pointer_focus(device,
&es->surface, time,
device->x, device->y, sx, sy);
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;
/* FIXME: Reject if fullscreen */
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;
move->surface = es;
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);
wl_input_device_set_pointer_focus(device, NULL, time, 0, 0, 0, 0);
}
struct wlsc_resize_grab {
struct wl_grab grab;
uint32_t edges;
int32_t dx, dy, width, height;
struct wlsc_surface *surface;
struct wl_shell *shell;
};
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 wl_surface *surface = &resize->surface->surface;
int32_t width, height;
if (resize->edges & WL_SHELL_RESIZE_LEFT) {
width = device->grab_x - x + resize->width;
} else if (resize->edges & WL_SHELL_RESIZE_RIGHT) {
width = x - device->grab_x + resize->width;
} else {
width = resize->width;
}
if (resize->edges & WL_SHELL_RESIZE_TOP) {
height = device->grab_y - y + resize->height;
} else if (resize->edges & WL_SHELL_RESIZE_BOTTOM) {
height = y - device->grab_y + resize->height;
} else {
height = resize->height;
}
wl_client_post_event(surface->client, &resize->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)
{
struct wlsc_surface *es;
struct wl_input_device *device = grab->input_device;
int32_t sx, sy;
es = pick_surface(grab->input_device, &sx, &sy);
wl_input_device_set_pointer_focus(device,
&es->surface, time,
device->x, device->y, sx, sy);
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;
/* FIXME: Reject if fullscreen */
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;
resize->surface = es;
resize->shell = shell;
if (edges == 0 || edges > 15 ||
(edges & 3) == 3 || (edges & 12) == 12)
return;
switch (edges) {
case WL_SHELL_RESIZE_TOP:
pointer = WLSC_POINTER_TOP;
break;
case WL_SHELL_RESIZE_BOTTOM:
pointer = WLSC_POINTER_BOTTOM;
break;
case WL_SHELL_RESIZE_LEFT:
pointer = WLSC_POINTER_LEFT;
break;
case WL_SHELL_RESIZE_TOP_LEFT:
pointer = WLSC_POINTER_TOP_LEFT;
break;
case WL_SHELL_RESIZE_BOTTOM_LEFT:
pointer = WLSC_POINTER_BOTTOM_LEFT;
break;
case WL_SHELL_RESIZE_RIGHT:
pointer = WLSC_POINTER_RIGHT;
break;
case WL_SHELL_RESIZE_TOP_RIGHT:
pointer = WLSC_POINTER_TOP_RIGHT;
break;
case WL_SHELL_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);
wl_input_device_set_pointer_focus(device, NULL, time, 0, 0, 0, 0);
}
static void
shell_set_toplevel(struct wl_client *client,
struct wl_shell *wl_shell,
struct wl_surface *surface)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN) {
es->x = es->saved_x;
es->y = es->saved_y;
} else if (es->map_type == WLSC_SURFACE_MAP_UNMAPPED) {
es->x = 10 + random() % 400;
es->y = 10 + random() % 400;
/* assign to first output */
es->output = container_of(ec->output_list.next,
struct wlsc_output, link);
}
wlsc_surface_damage(es);
es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
es->fullscreen_output = NULL;
}
static void
shell_set_transient(struct wl_client *client,
struct wl_shell *wl_shell,
struct wl_surface *surface,
struct wl_surface *parent,
int x, int y, uint32_t flags)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_surface *pes = (struct wlsc_surface *) parent;
/* assign to parents output */
es->output = pes->output;
es->x = pes->x + x;
es->y = pes->y + y;
wlsc_surface_damage(es);
es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
}
static void
shell_set_fullscreen(struct wl_client *client,
struct wl_shell *wl_shell,
struct wl_surface *surface)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_output *output;
/* FIXME: Fullscreen on first output */
/* FIXME: Handle output going away */
output = container_of(es->compositor->output_list.next,
struct wlsc_output, link);
es->output = output;
es->saved_x = es->x;
es->saved_y = es->y;
es->x = (output->current->width - es->width) / 2;
es->y = (output->current->height - es->height) / 2;
es->fullscreen_output = output;
wlsc_surface_damage(es);
es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
}
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,
wlsc_compositor_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->resource.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);
struct wlsc_surface *es;
struct wl_input_device *device = grab->input_device;
int32_t sx, sy;
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);
es = pick_surface(grab->input_device, &sx, &sy);
wl_input_device_set_pointer_focus(device,
&es->surface, time,
device->x, device->y, sx, sy);
}
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_input_device_set_pointer_focus(device, NULL, time, 0, 0, 0, 0);
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,
wlsc_compositor_get_time());
}
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_resource *resource, uint32_t time)
{
struct wl_drag *drag =
container_of(listener, struct wl_drag, drag_focus_listener);
struct wl_surface *surface = (struct wl_surface *) resource;
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);
}
static void
wlsc_selection_set_focus(struct wlsc_shell *shell,
struct wl_selection *selection,
struct wl_surface *surface, uint32_t time)
{
char **p, **end;
if (selection->selection_focus == surface)
return;
if (selection->selection_focus != NULL)
wl_client_post_event(selection->selection_focus->client,
&selection->selection_offer.object,
WL_SELECTION_OFFER_KEYBOARD_FOCUS,
NULL);
if (surface) {
wl_client_post_global(surface->client,
&selection->selection_offer.object);
end = selection->types.data + selection->types.size;
for (p = selection->types.data; p < end; p++)
wl_client_post_event(surface->client,
&selection->selection_offer.object,
WL_SELECTION_OFFER_OFFER, *p);
wl_list_remove(&selection->selection_focus_listener.link);
wl_list_insert(surface->resource.destroy_listener_list.prev,
&selection->selection_focus_listener.link);
wl_client_post_event(surface->client,
&selection->selection_offer.object,
WL_SELECTION_OFFER_KEYBOARD_FOCUS,
selection->input_device);
}
selection->selection_focus = surface;
wl_list_remove(&selection->selection_focus_listener.link);
if (surface)
wl_list_insert(surface->resource.destroy_listener_list.prev,
&selection->selection_focus_listener.link);
}
static void
selection_offer_receive(struct wl_client *client,
struct wl_selection_offer *offer,
const char *mime_type, int fd)
{
struct wl_selection *selection =
container_of(offer, struct wl_selection, selection_offer);
wl_client_post_event(selection->client,
&selection->resource.object,
WL_SELECTION_SEND, mime_type, fd);
close(fd);
}
static const struct wl_selection_offer_interface selection_offer_interface = {
selection_offer_receive
};
static void
selection_offer(struct wl_client *client,
struct wl_selection *selection, const char *type)
{
char **p;
p = wl_array_add(&selection->types, sizeof *p);
if (p)
*p = strdup(type);
if (!p || !*p)
wl_client_post_no_memory(client);
}
static void
selection_activate(struct wl_client *client,
struct wl_selection *selection,
struct wl_input_device *device, uint32_t time)
{
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wl_display *display = wl_client_get_display (client);
struct wlsc_compositor *compositor =
(struct wlsc_compositor *) device->compositor;
selection->input_device = device;
selection->selection_offer.object.interface =
&wl_selection_offer_interface;
selection->selection_offer.object.implementation =
(void (**)(void)) &selection_offer_interface;
wl_display_add_object(display, &selection->selection_offer.object);
if (wd->selection) {
wl_client_post_event(wd->selection->client,
&wd->selection->resource.object,
WL_SELECTION_CANCELLED);
}
wd->selection = selection;
wlsc_selection_set_focus(compositor->shell,
selection, device->keyboard_focus, time);
}
static void
selection_destroy(struct wl_client *client, struct wl_selection *selection)
{
wl_resource_destroy(&selection->resource, client,
wlsc_compositor_get_time());
}
static const struct wl_selection_interface selection_interface = {
selection_offer,
selection_activate,
selection_destroy
};
static void
destroy_selection(struct wl_resource *resource, struct wl_client *client)
{
struct wl_selection *selection =
container_of(resource, struct wl_selection, resource);
struct wlsc_input_device *wd =
(struct wlsc_input_device *) selection->input_device;
struct wlsc_compositor *compositor =
(struct wlsc_compositor *) wd->input_device.compositor;
if (wd && wd->selection == selection) {
wd->selection = NULL;
wlsc_selection_set_focus(compositor->shell,
selection, NULL,
wlsc_compositor_get_time());
}
wl_list_remove(&selection->selection_focus_listener.link);
free(selection);
}
static void
selection_handle_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
}
static void
shell_create_selection(struct wl_client *client,
struct wl_shell *shell, uint32_t id)
{
struct wl_selection *selection;
selection = malloc(sizeof *selection);
if (selection == NULL) {
wl_client_post_no_memory(client);
return;
}
memset(selection, 0, sizeof *selection);
selection->resource.object.id = id;
selection->resource.object.interface = &wl_selection_interface;
selection->resource.object.implementation =
(void (**)(void)) &selection_interface;
selection->client = client;
selection->resource.destroy = destroy_selection;
selection->selection_focus = NULL;
selection->selection_focus_listener.func =
selection_handle_surface_destroy;
wl_list_init(&selection->selection_focus_listener.link);
wl_client_add_resource(client, &selection->resource);
}
const static struct wl_shell_interface shell_interface = {
shell_move,
shell_resize,
shell_create_drag,
shell_create_selection,
shell_set_toplevel,
shell_set_transient,
shell_set_fullscreen
};
static void
move_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct wl_shell *shell = data;
struct wlsc_surface *surface =
(struct wlsc_surface *) device->pointer_focus;
if (surface == NULL)
return;
shell_move(NULL, shell, &surface->surface, device, time);
}
static void
resize_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct wl_shell *shell = data;
struct wlsc_surface *surface =
(struct wlsc_surface *) device->pointer_focus;
uint32_t edges = 0;
int32_t x, y;
if (surface == NULL)
return;
x = device->grab_x - surface->x;
y = device->grab_y - surface->y;
if (x < surface->width / 3)
edges |= WL_SHELL_RESIZE_LEFT;
else if (x < 2 * surface->width / 3)
edges |= 0;
else
edges |= WL_SHELL_RESIZE_RIGHT;
if (y < surface->height / 3)
edges |= WL_SHELL_RESIZE_TOP;
else if (y < 2 * surface->height / 3)
edges |= 0;
else
edges |= WL_SHELL_RESIZE_BOTTOM;
shell_resize(NULL, shell, &surface->surface, device, time, edges);
}
static void
lock(struct wlsc_shell *shell)
{
}
static void
attach(struct wlsc_shell *shell, struct wlsc_surface *es)
{
if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN) {
es->x = (es->fullscreen_output->current->width - es->width) / 2;
es->y = (es->fullscreen_output->current->height - es->height) / 2;
}
}
int
shell_init(struct wlsc_compositor *ec);
WL_EXPORT int
shell_init(struct wlsc_compositor *ec)
{
struct wl_shell *shell;
shell = malloc(sizeof *shell);
if (shell == NULL)
return -1;
shell->shell.lock = lock;
shell->shell.attach = attach;
shell->shell.set_selection_focus = wlsc_selection_set_focus;
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;
wlsc_compositor_add_binding(ec, 0, BTN_LEFT, MODIFIER_SUPER,
move_binding, shell);
wlsc_compositor_add_binding(ec, 0, BTN_MIDDLE, MODIFIER_SUPER,
resize_binding, shell);
ec->shell = &shell->shell;
return 0;
}