weston/compositor/compositor-x11.c

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/*
* Copyright © 2008-2010 Kristian Høgsberg
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <linux/input.h>
#include <xcb/xcb.h>
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#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>
#include <GLES2/gl2.h>
#include <EGL/egl.h>
#include "compositor.h"
#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
struct x11_compositor {
struct wlsc_compositor base;
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Display *dpy;
xcb_connection_t *conn;
xcb_screen_t *screen;
xcb_cursor_t null_cursor;
struct wl_array keys;
struct wl_event_source *xcb_source;
struct {
xcb_atom_t wm_protocols;
xcb_atom_t wm_normal_hints;
xcb_atom_t wm_size_hints;
xcb_atom_t wm_delete_window;
xcb_atom_t wm_class;
xcb_atom_t net_wm_name;
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xcb_atom_t net_wm_icon;
xcb_atom_t string;
xcb_atom_t utf8_string;
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xcb_atom_t cardinal;
} atom;
};
struct x11_output {
struct wlsc_output base;
xcb_window_t window;
EGLSurface egl_surface;
};
struct x11_input {
struct wlsc_input_device base;
};
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static int
x11_input_create(struct x11_compositor *c)
{
struct x11_input *input;
input = malloc(sizeof *input);
if (input == NULL)
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return -1;
memset(input, 0, sizeof *input);
wlsc_input_device_init(&input->base, &c->base);
c->base.input_device = &input->base.input_device;
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return 0;
}
static int
x11_compositor_init_egl(struct x11_compositor *c)
{
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EGLint major, minor;
EGLint n;
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const char *extensions;
EGLint config_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
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static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
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c->base.display = eglGetDisplay(c->dpy);
if (c->base.display == NULL) {
fprintf(stderr, "failed to create display\n");
return -1;
}
if (!eglInitialize(c->base.display, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return -1;
}
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extensions = eglQueryString(c->base.display, EGL_EXTENSIONS);
if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
return -1;
}
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if (!eglBindAPI(EGL_OPENGL_ES_API)) {
fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
return -1;
}
if (!eglChooseConfig(c->base.display, config_attribs,
&c->base.config, 1, &n) || n == 0) {
fprintf(stderr, "failed to choose config: %d\n", n);
return -1;
}
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c->base.context = eglCreateContext(c->base.display, c->base.config,
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EGL_NO_CONTEXT, context_attribs);
if (c->base.context == NULL) {
fprintf(stderr, "failed to create context\n");
return -1;
}
if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE,
EGL_NO_SURFACE, c->base.context)) {
fprintf(stderr, "failed to make context current\n");
return -1;
}
return 0;
}
static int
x11_output_prepare_render(struct wlsc_output *output_base)
{
struct x11_output *output = (struct x11_output *) output_base;
struct wlsc_compositor *ec = output->base.compositor;
if (!eglMakeCurrent(ec->display, output->egl_surface,
output->egl_surface, ec->context)) {
fprintf(stderr, "failed to make current\n");
return -1;
}
return 0;
}
static void
x11_compositor_present(struct wlsc_compositor *base)
{
struct x11_compositor *c = (struct x11_compositor *) base;
struct x11_output *output;
struct timeval tv;
uint32_t msec;
wl_list_for_each(output, &c->base.output_list, base.link) {
if (x11_output_prepare_render(&output->base))
continue;
eglSwapBuffers(c->base.display, output->egl_surface);
}
gettimeofday(&tv, NULL);
msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
wlsc_compositor_finish_frame(&c->base, msec);
}
static void
x11_output_set_wm_protocols(struct x11_output *output)
{
xcb_atom_t list[1];
struct x11_compositor *c =
(struct x11_compositor *) output->base.compositor;
list[0] = c->atom.wm_delete_window;
xcb_change_property (c->conn,
XCB_PROP_MODE_REPLACE,
output->window,
c->atom.wm_protocols,
XCB_ATOM_ATOM,
32,
ARRAY_SIZE(list),
list);
}
struct wm_normal_hints {
uint32_t flags;
uint32_t pad[4];
int32_t min_width, min_height;
int32_t max_width, max_height;
int32_t width_inc, height_inc;
int32_t min_aspect_x, min_aspect_y;
int32_t max_aspect_x, max_aspect_y;
int32_t base_width, base_height;
int32_t win_gravity;
};
#define WM_NORMAL_HINTS_MIN_SIZE 16
#define WM_NORMAL_HINTS_MAX_SIZE 32
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static void
x11_output_set_icon(struct x11_compositor *c, struct x11_output *output,
const char *filename, int width, int height)
{
uint32_t *icon, *pixels;
pixels = wlsc_load_image(filename, width, height);
if (!pixels)
return;
icon = malloc(width * height * 4 + 8);
if (!icon) {
free(pixels);
return;
}
icon[0] = width;
icon[1] = height;
memcpy(icon + 2, pixels, width * height * 4);
xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.net_wm_icon, c->atom.cardinal, 32,
width * height + 2, icon);
free(icon);
free(pixels);
}
static int
x11_compositor_create_output(struct x11_compositor *c, int width, int height)
{
static const char name[] = "Wayland Compositor";
static const char class[] = "wayland-1\0Wayland Compositor";
struct x11_output *output;
xcb_screen_iterator_t iter;
struct wm_normal_hints normal_hints;
uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
uint32_t values[2] = {
XCB_EVENT_MASK_KEY_PRESS |
XCB_EVENT_MASK_KEY_RELEASE |
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW |
XCB_EVENT_MASK_KEYMAP_STATE |
XCB_EVENT_MASK_FOCUS_CHANGE,
0
};
output = malloc(sizeof *output);
if (output == NULL)
return -1;
memset(output, 0, sizeof *output);
wlsc_output_init(&output->base, &c->base, 0, 0, width, height,
WL_OUTPUT_FLIPPED);
values[1] = c->null_cursor;
output->window = xcb_generate_id(c->conn);
iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
xcb_create_window(c->conn,
XCB_COPY_FROM_PARENT,
output->window,
iter.data->root,
0, 0,
width, height,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
iter.data->root_visual,
mask, values);
/* Don't resize me. */
memset(&normal_hints, 0, sizeof normal_hints);
normal_hints.flags =
WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
normal_hints.min_width = width;
normal_hints.min_height = height;
normal_hints.max_width = width;
normal_hints.max_height = height;
xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.wm_normal_hints,
c->atom.wm_size_hints, 32,
sizeof normal_hints / 4,
(uint8_t *) &normal_hints);
/* Set window name. Don't bother with non-EWMH WMs. */
xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.net_wm_name, c->atom.utf8_string, 8,
strlen(name), name);
xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.wm_class, c->atom.string, 8,
sizeof class, class);
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x11_output_set_icon(c, output,
DATADIR "/wayland/wayland.png", 128, 128);
xcb_map_window(c->conn, output->window);
x11_output_set_wm_protocols(output);
output->egl_surface =
eglCreateWindowSurface(c->base.display, c->base.config,
output->window, NULL);
if (!output->egl_surface) {
fprintf(stderr, "failed to create window surface\n");
return -1;
}
if (!eglMakeCurrent(c->base.display, output->egl_surface,
output->egl_surface, c->base.context)) {
fprintf(stderr, "failed to make surface current\n");
return -1;
}
output->base.prepare_render = x11_output_prepare_render;
wl_list_insert(c->base.output_list.prev, &output->base.link);
return 0;
}
static struct x11_output *
x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
{
struct x11_output *output;
wl_list_for_each(output, &c->base.output_list, base.link) {
if (output->window == window)
return output;
}
return NULL;
}
static void
x11_compositor_handle_event(int fd, uint32_t mask, void *data)
{
struct x11_compositor *c = data;
struct x11_output *output;
xcb_generic_event_t *event;
xcb_client_message_event_t *client_message;
xcb_motion_notify_event_t *motion_notify;
xcb_enter_notify_event_t *enter_notify;
xcb_key_press_event_t *key_press;
xcb_button_press_event_t *button_press;
xcb_keymap_notify_event_t *keymap_notify;
xcb_focus_in_event_t *focus_in;
xcb_atom_t atom;
uint32_t *k;
int i, set;
while (event = xcb_poll_for_event (c->conn), event != NULL) {
switch (event->response_type & ~0x80) {
case XCB_KEY_PRESS:
key_press = (xcb_key_press_event_t *) event;
notify_key(c->base.input_device,
key_press->time, key_press->detail - 8, 1);
break;
case XCB_KEY_RELEASE:
key_press = (xcb_key_press_event_t *) event;
notify_key(c->base.input_device,
key_press->time, key_press->detail - 8, 0);
break;
case XCB_BUTTON_PRESS:
button_press = (xcb_button_press_event_t *) event;
notify_button(c->base.input_device,
button_press->time,
button_press->detail + BTN_LEFT - 1, 1);
break;
case XCB_BUTTON_RELEASE:
button_press = (xcb_button_press_event_t *) event;
notify_button(c->base.input_device,
button_press->time,
button_press->detail + BTN_LEFT - 1, 0);
break;
case XCB_MOTION_NOTIFY:
motion_notify = (xcb_motion_notify_event_t *) event;
notify_motion(c->base.input_device,
motion_notify->time,
motion_notify->event_x,
motion_notify->event_y);
break;
case XCB_EXPOSE:
/* FIXME: schedule output repaint */
/* output = x11_compositor_find_output(c, expose->window); */
wlsc_compositor_schedule_repaint(&c->base);
break;
case XCB_ENTER_NOTIFY:
enter_notify = (xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
break;
output = x11_compositor_find_output(c, enter_notify->event);
notify_pointer_focus(c->base.input_device,
enter_notify->time,
&output->base,
enter_notify->event_x,
enter_notify->event_y);
break;
case XCB_LEAVE_NOTIFY:
enter_notify = (xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
break;
notify_pointer_focus(c->base.input_device,
enter_notify->time,
NULL,
enter_notify->event_x,
enter_notify->event_y);
break;
case XCB_CLIENT_MESSAGE:
client_message = (xcb_client_message_event_t *) event;
atom = client_message->data.data32[0];
if (atom == c->atom.wm_delete_window)
wl_display_terminate(c->base.wl_display);
break;
case XCB_FOCUS_IN:
focus_in = (xcb_focus_in_event_t *) event;
if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
break;
output = x11_compositor_find_output(c, focus_in->event);
notify_keyboard_focus(c->base.input_device,
get_time(),
&output->base, &c->keys);
break;
case XCB_FOCUS_OUT:
focus_in = (xcb_focus_in_event_t *) event;
if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
break;
notify_keyboard_focus(c->base.input_device,
get_time(), NULL, NULL);
break;
case XCB_KEYMAP_NOTIFY:
keymap_notify = (xcb_keymap_notify_event_t *) event;
c->keys.size = 0;
for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
set = keymap_notify->keys[i >> 3] &
(1 << (i & 7));
if (set) {
k = wl_array_add(&c->keys, sizeof *k);
*k = i;
}
}
break;
default:
break;
}
free (event);
}
}
#define F(field) offsetof(struct x11_compositor, field)
static void
x11_compositor_get_resources(struct x11_compositor *c)
{
static const struct { const char *name; int offset; } atoms[] = {
{ "WM_PROTOCOLS", F(atom.wm_protocols) },
{ "WM_NORMAL_HINTS", F(atom.wm_normal_hints) },
{ "WM_SIZE_HINTS", F(atom.wm_size_hints) },
{ "WM_DELETE_WINDOW", F(atom.wm_delete_window) },
{ "WM_CLASS", F(atom.wm_class) },
{ "_NET_WM_NAME", F(atom.net_wm_name) },
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{ "_NET_WM_ICON", F(atom.net_wm_icon) },
{ "STRING", F(atom.string) },
{ "UTF8_STRING", F(atom.utf8_string) },
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{ "CARDINAL", F(atom.cardinal) },
};
xcb_intern_atom_cookie_t cookies[ARRAY_SIZE(atoms)];
xcb_intern_atom_reply_t *reply;
xcb_pixmap_t pixmap;
xcb_gc_t gc;
int i;
uint8_t data[] = { 0, 0, 0, 0 };
for (i = 0; i < ARRAY_SIZE(atoms); i++)
cookies[i] = xcb_intern_atom (c->conn, 0,
strlen(atoms[i].name),
atoms[i].name);
for (i = 0; i < ARRAY_SIZE(atoms); i++) {
reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
*(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
free(reply);
}
pixmap = xcb_generate_id(c->conn);
gc = xcb_generate_id(c->conn);
xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
c->null_cursor = xcb_generate_id(c->conn);
xcb_create_cursor (c->conn, c->null_cursor,
pixmap, pixmap, 0, 0, 0, 0, 0, 0, 1, 1);
xcb_free_gc(c->conn, gc);
xcb_free_pixmap(c->conn, pixmap);
}
static void
x11_destroy(struct wlsc_compositor *ec)
{
free(ec);
}
struct wlsc_compositor *
x11_compositor_create(struct wl_display *display, int width, int height)
{
struct x11_compositor *c;
struct wl_event_loop *loop;
xcb_screen_iterator_t s;
c = malloc(sizeof *c);
if (c == NULL)
return NULL;
memset(c, 0, sizeof *c);
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c->dpy = XOpenDisplay(NULL);
if (c->dpy == NULL)
return NULL;
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c->conn = XGetXCBConnection(c->dpy);
if (xcb_connection_has_error(c->conn))
return NULL;
s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
c->screen = s.data;
wl_array_init(&c->keys);
x11_compositor_get_resources(c);
c->base.wl_display = display;
if (x11_compositor_init_egl(c) < 0)
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return NULL;
c->base.destroy = x11_destroy;
c->base.present = x11_compositor_present;
c->base.create_buffer = wlsc_shm_buffer_create;
/* Can't init base class until we have a current egl context */
if (wlsc_compositor_init(&c->base, display) < 0)
return NULL;
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if (x11_compositor_create_output(c, width, height) < 0)
return NULL;
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if (x11_input_create(c) < 0)
return NULL;
loop = wl_display_get_event_loop(c->base.wl_display);
c->xcb_source =
wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
WL_EVENT_READABLE,
x11_compositor_handle_event, c);
return &c->base;
}