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ca9b09d945
weston/src/compositor-x11.c
Scott Moreau ca9b09d945 compositor-x11: Always free output_mode on error.
2012-08-09 10:23:26 -04:00

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/*
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2010-2011 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.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>
#ifdef HAVE_XCB_XKB
#include <xcb/xkb.h>
#endif
#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>
#include <xkbcommon/xkbcommon.h>
#include <GLES2/gl2.h>
#include <EGL/egl.h>
#include "compositor.h"
#include "../shared/config-parser.h"
static char *output_name;
static char *output_mode;
static int option_width;
static int option_height;
static int option_count;
static struct wl_list configured_output_list;
struct x11_configured_output {
char *name;
int width, height;
struct wl_list link;
};
struct x11_compositor {
struct weston_compositor base;
EGLSurface dummy_pbuffer;
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 xkb_keymap *xkb_keymap;
unsigned int has_xkb;
uint8_t xkb_event_base;
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;
xcb_atom_t net_wm_icon;
xcb_atom_t net_wm_state;
xcb_atom_t net_wm_state_fullscreen;
xcb_atom_t string;
xcb_atom_t utf8_string;
xcb_atom_t cardinal;
xcb_atom_t xkb_names;
} atom;
};
struct x11_output {
struct weston_output base;
xcb_window_t window;
EGLSurface egl_surface;
struct weston_mode mode;
struct wl_event_source *finish_frame_timer;
};
struct x11_input {
struct weston_seat base;
};
static struct xkb_keymap *
x11_compositor_get_keymap(struct x11_compositor *c)
{
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *reply;
xcb_generic_error_t *error;
struct xkb_rule_names names;
struct xkb_keymap *ret;
const char *value_all, *value_part;
int length_all, length_part;
memset(&names, 0, sizeof(names));
cookie = xcb_get_property(c->conn, 0, c->screen->root,
c->atom.xkb_names, c->atom.string, 0, 1024);
reply = xcb_get_property_reply(c->conn, cookie, &error);
if (reply == NULL)
return NULL;
value_all = xcb_get_property_value(reply);
length_all = xcb_get_property_value_length(reply);
value_part = value_all;
#define copy_prop_value(to) \
length_part = strlen(value_part); \
if (value_part + length_part < (value_all + length_all) && \
length_part > 0) \
names.to = value_part; \
value_part += length_part + 1;
copy_prop_value(rules);
copy_prop_value(model);
copy_prop_value(layout);
copy_prop_value(variant);
copy_prop_value(options);
#undef copy_prop_value
ret = xkb_map_new_from_names(c->base.xkb_context, &names, 0);
free(reply);
return ret;
}
static void
x11_compositor_setup_xkb(struct x11_compositor *c)
{
#ifndef HAVE_XCB_XKB
weston_log("XCB-XKB not available during build\n");
c->has_xkb = 0;
c->xkb_event_base = 0;
return;
#else
const xcb_query_extension_reply_t *ext;
xcb_generic_error_t *error;
xcb_void_cookie_t select;
xcb_xkb_per_client_flags_cookie_t pcf;
xcb_xkb_per_client_flags_reply_t *pcf_reply;
c->has_xkb = 0;
c->xkb_event_base = 0;
ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
if (!ext) {
weston_log("XKB extension not available on host X11 server\n");
return;
}
c->xkb_event_base = ext->first_event;
select = xcb_xkb_select_events(c->conn,
XCB_XKB_ID_USE_CORE_KBD,
XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
0,
XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
0,
0,
NULL);
error = xcb_request_check(c->conn, select);
if (error) {
weston_log("error: failed to select for XKB state events\n");
return;
}
pcf = xcb_xkb_per_client_flags(c->conn,
XCB_XKB_ID_USE_CORE_KBD,
XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
0,
0,
0);
pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, &error);
free(pcf_reply);
if (error) {
weston_log("failed to set XKB per-client flags, not using "
"detectable repeat\n");
return;
}
c->has_xkb = 1;
#endif
}
static int
x11_input_create(struct x11_compositor *c, int no_input)
{
struct x11_input *input;
struct xkb_keymap *keymap;
input = malloc(sizeof *input);
if (input == NULL)
return -1;
memset(input, 0, sizeof *input);
weston_seat_init(&input->base, &c->base);
c->base.seat = &input->base;
if (no_input)
return 0;
weston_seat_init_pointer(&input->base);
x11_compositor_setup_xkb(c);
keymap = x11_compositor_get_keymap(c);
weston_seat_init_keyboard(&input->base, keymap);
if (keymap)
xkb_map_unref(keymap);
return 0;
}
static void
x11_input_destroy(struct x11_compositor *compositor)
{
struct x11_input *input = container_of(compositor->base.seat,
struct x11_input,
base);
weston_seat_release(&input->base);
free(input);
}
static int
x11_compositor_init_egl(struct x11_compositor *c)
{
EGLint major, minor;
EGLint n;
EGLint config_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
static const EGLint pbuffer_attribs[] = {
EGL_WIDTH, 10,
EGL_HEIGHT, 10,
EGL_NONE
};
c->base.egl_display = eglGetDisplay(c->dpy);
if (c->base.egl_display == NULL) {
weston_log("failed to create display\n");
return -1;
}
if (!eglInitialize(c->base.egl_display, &major, &minor)) {
weston_log("failed to initialize display\n");
return -1;
}
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
weston_log("failed to bind EGL_OPENGL_ES_API\n");
return -1;
}
if (!eglChooseConfig(c->base.egl_display, config_attribs,
&c->base.egl_config, 1, &n) || n == 0) {
weston_log("failed to choose config: %d\n", n);
return -1;
}
c->base.egl_context =
eglCreateContext(c->base.egl_display, c->base.egl_config,
EGL_NO_CONTEXT, context_attribs);
if (c->base.egl_context == NULL) {
weston_log("failed to create context\n");
return -1;
}
c->dummy_pbuffer = eglCreatePbufferSurface(c->base.egl_display,
c->base.egl_config,
pbuffer_attribs);
if (c->dummy_pbuffer == NULL) {
weston_log("failed to create dummy pbuffer\n");
return -1;
}
if (!eglMakeCurrent(c->base.egl_display, c->dummy_pbuffer,
c->dummy_pbuffer, c->base.egl_context)) {
weston_log("failed to make context current\n");
return -1;
}
return 0;
}
static void
x11_compositor_fini_egl(struct x11_compositor *compositor)
{
eglMakeCurrent(compositor->base.egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglTerminate(compositor->base.egl_display);
eglReleaseThread();
}
static void
x11_output_repaint(struct weston_output *output_base,
pixman_region32_t *damage)
{
struct x11_output *output = (struct x11_output *)output_base;
struct x11_compositor *compositor =
(struct x11_compositor *)output->base.compositor;
struct weston_surface *surface;
if (!eglMakeCurrent(compositor->base.egl_display, output->egl_surface,
output->egl_surface,
compositor->base.egl_context)) {
weston_log("failed to make current\n");
return;
}
wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
weston_surface_draw(surface, &output->base, damage);
wl_signal_emit(&output->base.frame_signal, output);
eglSwapBuffers(compositor->base.egl_display, output->egl_surface);
wl_event_source_timer_update(output->finish_frame_timer, 10);
}
static int
finish_frame_handler(void *data)
{
struct x11_output *output = data;
uint32_t msec;
struct timeval tv;
gettimeofday(&tv, NULL);
msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
weston_output_finish_frame(&output->base, msec);
return 1;
}
static void
x11_output_destroy(struct weston_output *output_base)
{
struct x11_output *output = (struct x11_output *)output_base;
struct x11_compositor *compositor =
(struct x11_compositor *)output->base.compositor;
wl_list_remove(&output->base.link);
wl_event_source_remove(output->finish_frame_timer);
eglDestroySurface(compositor->base.egl_display, output->egl_surface);
xcb_destroy_window(compositor->conn, output->window);
weston_output_destroy(&output->base);
free(output);
}
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_LENGTH(list),
list);
}
static void
x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
{
xcb_client_message_event_t event;
struct x11_compositor *c =
(struct x11_compositor *) output->base.compositor;
xcb_screen_iterator_t iter;
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
#define _NET_WM_STATE_ADD 1 /* add/set property */
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
memset(&event, 0, sizeof event);
event.response_type = XCB_CLIENT_MESSAGE;
event.format = 32;
event.window = output->window;
event.type = c->atom.net_wm_state;
event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
event.data.data32[1] = state;
event.data.data32[2] = 0;
event.data.data32[3] = 0;
event.data.data32[4] = 0;
iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
xcb_send_event(c->conn, 0, iter.data->root,
XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
(void *) &event);
}
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
static void
x11_output_set_icon(struct x11_compositor *c,
struct x11_output *output, const char *filename)
{
uint32_t *icon;
int32_t width, height;
pixman_image_t *image;
image = load_image(filename);
if (!image)
return;
width = pixman_image_get_width(image);
height = pixman_image_get_height(image);
icon = malloc(width * height * 4 + 8);
if (!icon) {
pixman_image_unref(image);
return;
}
icon[0] = width;
icon[1] = height;
memcpy(icon + 2, pixman_image_get_data(image), 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);
pixman_image_unref(image);
}
static int
x11_compositor_create_output(struct x11_compositor *c, int x, int y,
int width, int height, int fullscreen,
int no_input, const char *name)
{
static const char class[] = "weston-1\0Weston Compositor";
struct x11_output *output;
xcb_screen_iterator_t iter;
struct wm_normal_hints normal_hints;
struct wl_event_loop *loop;
uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
uint32_t values[2] = {
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY,
0
};
if (!no_input)
values[0] |=
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_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW |
XCB_EVENT_MASK_KEYMAP_STATE |
XCB_EVENT_MASK_FOCUS_CHANGE;
output = malloc(sizeof *output);
if (output == NULL)
return -1;
memset(output, 0, sizeof *output);
output->mode.flags =
WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
output->mode.width = width;
output->mode.height = height;
output->mode.refresh = 60000;
wl_list_init(&output->base.mode_list);
wl_list_insert(&output->base.mode_list, &output->mode.link);
output->base.current = &output->mode;
output->base.make = "xwayland";
output->base.model = "none";
weston_output_init(&output->base, &c->base, x, y, 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);
x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
xcb_map_window(c->conn, output->window);
x11_output_set_wm_protocols(output);
if (fullscreen)
x11_output_change_state(output, 1,
c->atom.net_wm_state_fullscreen);
output->egl_surface =
eglCreateWindowSurface(c->base.egl_display, c->base.egl_config,
output->window, NULL);
if (!output->egl_surface) {
weston_log("failed to create window surface\n");
return -1;
}
if (!eglMakeCurrent(c->base.egl_display, output->egl_surface,
output->egl_surface, c->base.egl_context)) {
weston_log("failed to make surface current\n");
return -1;
}
loop = wl_display_get_event_loop(c->base.wl_display);
output->finish_frame_timer =
wl_event_loop_add_timer(loop, finish_frame_handler, output);
output->base.origin = output->base.current;
output->base.repaint = x11_output_repaint;
output->base.destroy = x11_output_destroy;
output->base.assign_planes = NULL;
output->base.set_backlight = NULL;
output->base.set_dpms = NULL;
output->base.switch_mode = NULL;
wl_list_insert(c->base.output_list.prev, &output->base.link);
weston_log("x11 output %dx%d, window id %d\n",
width, height, output->window);
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 uint32_t
get_xkb_mod_mask(struct x11_compositor *c, uint32_t in)
{
struct weston_xkb_info *info = &c->base.seat->xkb_info;
uint32_t ret = 0;
if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
ret |= (1 << info->shift_mod);
if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
ret |= (1 << info->caps_mod);
if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
ret |= (1 << info->ctrl_mod);
if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
ret |= (1 << info->alt_mod);
if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod2_mod);
if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod3_mod);
if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
ret |= (1 << info->super_mod);
if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
ret |= (1 << info->mod5_mod);
return ret;
}
#ifdef HAVE_XCB_XKB
static void
update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
{
struct weston_compositor *ec = &c->base;
struct wl_seat *seat = &ec->seat->seat;
xkb_state_update_mask(c->base.seat->xkb_state.state,
get_xkb_mod_mask(c, state->baseMods),
get_xkb_mod_mask(c, state->latchedMods),
get_xkb_mod_mask(c, state->lockedMods),
0,
0,
state->group);
notify_modifiers(seat, wl_display_next_serial(c->base.wl_display));
}
#endif
/**
* This is monumentally unpleasant. If we don't have XCB-XKB bindings,
* the best we can do (given that XCB also lacks XI2 support), is to take
* the state from the core key events. Unfortunately that only gives us
* the effective (i.e. union of depressed/latched/locked) state, and we
* need the granularity.
*
* So we still update the state with every key event we see, but also use
* the state field from X11 events as a mask so we don't get any stuck
* modifiers.
*/
static void
update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
{
uint32_t mask = get_xkb_mod_mask(c, x11_mask);
struct wl_keyboard *keyboard = &c->base.seat->keyboard;
xkb_state_update_mask(c->base.seat->xkb_state.state,
keyboard->modifiers.mods_depressed & mask,
keyboard->modifiers.mods_latched & mask,
keyboard->modifiers.mods_locked & mask,
0,
0,
(x11_mask >> 13) & 3);
notify_modifiers(&c->base.seat->seat,
wl_display_next_serial(c->base.wl_display));
}
static void
x11_compositor_deliver_button_event(struct x11_compositor *c,
xcb_generic_event_t *event, int state)
{
xcb_button_press_event_t *button_event =
(xcb_button_press_event_t *) event;
uint32_t button;
if (!c->has_xkb)
update_xkb_state_from_core(c, button_event->state);
switch (button_event->detail) {
default:
button = button_event->detail + BTN_LEFT - 1;
break;
case 2:
button = BTN_MIDDLE;
break;
case 3:
button = BTN_RIGHT;
break;
case 4:
if (state)
notify_axis(&c->base.seat->seat,
weston_compositor_get_time(),
WL_POINTER_AXIS_VERTICAL_SCROLL,
wl_fixed_from_int(1));
return;
case 5:
if (state)
notify_axis(&c->base.seat->seat,
weston_compositor_get_time(),
WL_POINTER_AXIS_VERTICAL_SCROLL,
wl_fixed_from_int(-1));
return;
case 6:
if (state)
notify_axis(&c->base.seat->seat,
weston_compositor_get_time(),
WL_POINTER_AXIS_HORIZONTAL_SCROLL,
wl_fixed_from_int(1));
return;
case 7:
if (state)
notify_axis(&c->base.seat->seat,
weston_compositor_get_time(),
WL_POINTER_AXIS_HORIZONTAL_SCROLL,
wl_fixed_from_int(-1));
return;
}
notify_button(&c->base.seat->seat,
weston_compositor_get_time(), button,
state ? WL_POINTER_BUTTON_STATE_PRESSED :
WL_POINTER_BUTTON_STATE_RELEASED);
}
static int
x11_compositor_next_event(struct x11_compositor *c,
xcb_generic_event_t **event, uint32_t mask)
{
if (mask & WL_EVENT_READABLE) {
*event = xcb_poll_for_event(c->conn);
} else {
#ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
*event = xcb_poll_for_queued_event(c->conn);
#else
*event = xcb_poll_for_event(c->conn);
#endif
}
return *event != NULL;
}
static int
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, *prev;
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, *key_release;
xcb_keymap_notify_event_t *keymap_notify;
xcb_focus_in_event_t *focus_in;
xcb_expose_event_t *expose;
xcb_atom_t atom;
uint32_t *k;
uint32_t i, set;
wl_fixed_t x, y;
int count;
prev = NULL;
count = 0;
while (x11_compositor_next_event(c, &event, mask)) {
switch (prev ? prev->response_type & ~0x80 : 0x80) {
case XCB_KEY_RELEASE:
/* Suppress key repeat events; this is only used if we
* don't have XCB XKB support. */
key_release = (xcb_key_press_event_t *) prev;
key_press = (xcb_key_press_event_t *) event;
if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
key_release->time == key_press->time &&
key_release->detail == key_press->detail) {
/* Don't deliver the held key release
* event or the new key press event. */
free(event);
free(prev);
prev = NULL;
continue;
} else {
/* Deliver the held key release now
* and fall through and handle the new
* event below. */
update_xkb_state_from_core(c, key_release->state);
notify_key(&c->base.seat->seat,
weston_compositor_get_time(),
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
}
case XCB_FOCUS_IN:
/* assert event is keymap_notify */
focus_in = (xcb_focus_in_event_t *) prev;
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;
}
}
output = x11_compositor_find_output(c, focus_in->event);
/* Unfortunately the state only comes with the enter
* event, rather than with the focus event. I'm not
* sure of the exact semantics around it and whether
* we can ensure that we get both? */
notify_keyboard_focus_in(&c->base.seat->seat, &c->keys,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
default:
/* No previous event held */
break;
}
switch (event->response_type & ~0x80) {
case XCB_KEY_PRESS:
key_press = (xcb_key_press_event_t *) event;
if (!c->has_xkb)
update_xkb_state_from_core(c, key_press->state);
notify_key(&c->base.seat->seat,
weston_compositor_get_time(),
key_press->detail - 8,
WL_KEYBOARD_KEY_STATE_PRESSED,
c->has_xkb ? STATE_UPDATE_NONE :
STATE_UPDATE_AUTOMATIC);
break;
case XCB_KEY_RELEASE:
/* If we don't have XKB, we need to use the lame
* autorepeat detection above. */
if (!c->has_xkb) {
prev = event;
break;
}
key_release = (xcb_key_press_event_t *) event;
notify_key(&c->base.seat->seat,
weston_compositor_get_time(),
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_NONE);
break;
case XCB_BUTTON_PRESS:
x11_compositor_deliver_button_event(c, event, 1);
break;
case XCB_BUTTON_RELEASE:
x11_compositor_deliver_button_event(c, event, 0);
break;
case XCB_MOTION_NOTIFY:
motion_notify = (xcb_motion_notify_event_t *) event;
if (!c->has_xkb)
update_xkb_state_from_core(c, motion_notify->state);
output = x11_compositor_find_output(c, motion_notify->event);
x = wl_fixed_from_int(output->base.x + motion_notify->event_x);
y = wl_fixed_from_int(output->base.y + motion_notify->event_y);
notify_motion(&c->base.seat->seat,
weston_compositor_get_time(), x, y);
break;
case XCB_EXPOSE:
expose = (xcb_expose_event_t *) event;
output = x11_compositor_find_output(c, expose->window);
weston_output_schedule_repaint(&output->base);
break;
case XCB_ENTER_NOTIFY:
enter_notify = (xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
break;
if (!c->has_xkb)
update_xkb_state_from_core(c, enter_notify->state);
output = x11_compositor_find_output(c, enter_notify->event);
x = wl_fixed_from_int(output->base.x + enter_notify->event_x);
y = wl_fixed_from_int(output->base.y + enter_notify->event_y);
notify_pointer_focus(&c->base.seat->seat,
&output->base, x, y);
break;
case XCB_LEAVE_NOTIFY:
enter_notify = (xcb_enter_notify_event_t *) event;
if (enter_notify->state >= Button1Mask)
break;
if (!c->has_xkb)
update_xkb_state_from_core(c, enter_notify->state);
output = x11_compositor_find_output(c, enter_notify->event);
notify_pointer_focus(&c->base.seat->seat, NULL, 0, 0);
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;
prev = event;
break;
case XCB_FOCUS_OUT:
focus_in = (xcb_focus_in_event_t *) event;
if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
break;
notify_keyboard_focus_out(&c->base.seat->seat);
break;
default:
break;
}
#ifdef HAVE_XCB_XKB
if (c->has_xkb &&
(event->response_type & ~0x80) == c->xkb_event_base) {
xcb_xkb_state_notify_event_t *state =
(xcb_xkb_state_notify_event_t *) event;
if (state->xkbType == XCB_XKB_STATE_NOTIFY)
update_xkb_state(c, state);
}
#endif
count++;
if (prev != event)
free (event);
}
switch (prev ? prev->response_type & ~0x80 : 0x80) {
case XCB_KEY_RELEASE:
key_release = (xcb_key_press_event_t *) prev;
update_xkb_state_from_core(c, key_release->state);
notify_key(&c->base.seat->seat,
weston_compositor_get_time(),
key_release->detail - 8,
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_AUTOMATIC);
free(prev);
prev = NULL;
break;
default:
break;
}
return count;
}
#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) },
{ "_NET_WM_ICON", F(atom.net_wm_icon) },
{ "_NET_WM_STATE", F(atom.net_wm_state) },
{ "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
{ "STRING", F(atom.string) },
{ "UTF8_STRING", F(atom.utf8_string) },
{ "CARDINAL", F(atom.cardinal) },
{ "_XKB_RULES_NAMES", F(atom.xkb_names) },
};
xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
xcb_intern_atom_reply_t *reply;
xcb_pixmap_t pixmap;
xcb_gc_t gc;
unsigned int i;
uint8_t data[] = { 0, 0, 0, 0 };
for (i = 0; i < ARRAY_LENGTH(atoms); i++)
cookies[i] = xcb_intern_atom (c->conn, 0,
strlen(atoms[i].name),
atoms[i].name);
for (i = 0; i < ARRAY_LENGTH(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_restore(struct weston_compositor *ec)
{
}
static void
x11_free_configured_output(struct x11_configured_output *output)
{
free(output->name);
free(output);
}
static void
x11_destroy(struct weston_compositor *ec)
{
struct x11_compositor *compositor = (struct x11_compositor *)ec;
struct x11_configured_output *o, *n;
wl_list_for_each_safe(o, n, &configured_output_list, link)
x11_free_configured_output(o);
wl_event_source_remove(compositor->xcb_source);
x11_input_destroy(compositor);
weston_compositor_shutdown(ec); /* destroys outputs, too */
x11_compositor_fini_egl(compositor);
XCloseDisplay(compositor->dpy);
free(ec);
}
static struct weston_compositor *
x11_compositor_create(struct wl_display *display,
int fullscreen,
int no_input,
int argc, char *argv[], const char *config_file)
{
static const char name[] = "Weston Compositor";
char configured_name[32];
struct x11_compositor *c;
struct x11_configured_output *o;
xcb_screen_iterator_t s;
int i, x = 0, output_count = 0;
int width, height, count;
weston_log("initializing x11 backend\n");
c = malloc(sizeof *c);
if (c == NULL)
return NULL;
memset(c, 0, sizeof *c);
if (weston_compositor_init(&c->base, display, argc, argv,
config_file) < 0)
goto err_free;
c->dpy = XOpenDisplay(NULL);
if (c->dpy == NULL)
goto err_free;
c->conn = XGetXCBConnection(c->dpy);
XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
if (xcb_connection_has_error(c->conn))
goto err_xdisplay;
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)
goto err_xdisplay;
c->base.destroy = x11_destroy;
c->base.restore = x11_restore;
if (weston_compositor_init_gl(&c->base) < 0)
goto err_egl;
if (x11_input_create(c, no_input) < 0)
goto err_egl;
width = option_width ? option_width : 1024;
height = option_height ? option_height : 640;
count = option_count ? option_count : 1;
wl_list_for_each(o, &configured_output_list, link) {
sprintf(configured_name, "%s - %s", name, o->name);
if (x11_compositor_create_output(c, x, 0,
option_width ? option_width :
o->width,
option_height ? option_height :
o->height,
fullscreen, no_input,
configured_name) < 0)
goto err_x11_input;
x += option_width ? option_width : o->width;
output_count++;
if (option_count && output_count >= option_count)
break;
}
for (i = output_count; i < count; i++) {
if (x11_compositor_create_output(c, x, 0, width, height,
fullscreen, no_input, name) < 0)
goto err_x11_input;
x += width;
}
c->xcb_source =
wl_event_loop_add_fd(c->base.input_loop,
xcb_get_file_descriptor(c->conn),
WL_EVENT_READABLE,
x11_compositor_handle_event, c);
wl_event_source_check(c->xcb_source);
return &c->base;
err_x11_input:
x11_input_destroy(c);
err_egl:
x11_compositor_fini_egl(c);
err_xdisplay:
XCloseDisplay(c->dpy);
err_free:
free(c);
return NULL;
}
static void
output_section_done(void *data)
{
struct x11_configured_output *output;
output = malloc(sizeof *output);
if (!output || !output_name || !output_mode) {
free(output_name);
output_name = NULL;
goto err_free;
}
output->name = output_name;
if (output_name[0] != 'X') {
x11_free_configured_output(output);
goto err_free;
}
if (sscanf(output_mode, "%dx%d", &output->width, &output->height) != 2) {
weston_log("Invalid mode \"%s\" for output %s\n",
output_mode, output_name);
x11_free_configured_output(output);
goto err_free;
}
wl_list_insert(configured_output_list.prev, &output->link);
err_free:
free(output_mode);
output_mode = NULL;
}
WL_EXPORT struct weston_compositor *
backend_init(struct wl_display *display, int argc, char *argv[],
const char *config_file)
{
int fullscreen = 0;
int no_input = 0;
const struct weston_option x11_options[] = {
{ WESTON_OPTION_INTEGER, "width", 0, &option_width },
{ WESTON_OPTION_INTEGER, "height", 0, &option_height },
{ WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
{ WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
{ WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
};
parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
wl_list_init(&configured_output_list);
const struct config_key x11_config_keys[] = {
{ "name", CONFIG_KEY_STRING, &output_name },
{ "mode", CONFIG_KEY_STRING, &output_mode },
};
const struct config_section config_section[] = {
{ "output", x11_config_keys,
ARRAY_LENGTH(x11_config_keys), output_section_done },
};
parse_config_file(config_file, config_section,
ARRAY_LENGTH(config_section), NULL);
return x11_compositor_create(display,
fullscreen,
no_input,
argc, argv, config_file);
}
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