ee72482a00
If somebody else did an X11 round trip, that could leave events in the XCB buffer that we wouldn't see until the next X event came in. The new event source check function lets us check the XCB queue after dispatching and this way we'll see events we need to deal with right away.
690 lines
17 KiB
C
690 lines
17 KiB
C
/*
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* Copyright © 2008-2010 Kristian Høgsberg
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <linux/input.h>
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#include <xcb/xcb.h>
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#include <X11/Xlib.h>
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#include <X11/Xlib-xcb.h>
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#include <GLES2/gl2.h>
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#include <EGL/egl.h>
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#include "compositor.h"
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#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
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struct x11_compositor {
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struct wlsc_compositor base;
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Display *dpy;
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xcb_connection_t *conn;
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xcb_screen_t *screen;
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xcb_cursor_t null_cursor;
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xcb_generic_event_t *next_event;
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struct wl_array keys;
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struct wl_event_source *xcb_source;
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struct {
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xcb_atom_t wm_protocols;
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xcb_atom_t wm_normal_hints;
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xcb_atom_t wm_size_hints;
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xcb_atom_t wm_delete_window;
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xcb_atom_t wm_class;
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xcb_atom_t net_wm_name;
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xcb_atom_t net_wm_icon;
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xcb_atom_t string;
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xcb_atom_t utf8_string;
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xcb_atom_t cardinal;
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} atom;
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};
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struct x11_output {
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struct wlsc_output base;
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xcb_window_t window;
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EGLSurface egl_surface;
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};
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struct x11_input {
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struct wlsc_input_device base;
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};
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static int
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x11_input_create(struct x11_compositor *c)
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{
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struct x11_input *input;
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input = malloc(sizeof *input);
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if (input == NULL)
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return -1;
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memset(input, 0, sizeof *input);
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wlsc_input_device_init(&input->base, &c->base);
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c->base.input_device = &input->base.input_device;
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return 0;
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}
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static int
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x11_compositor_init_egl(struct x11_compositor *c)
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{
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EGLint major, minor;
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EGLint n;
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const char *extensions;
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EGLint config_attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 1,
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EGL_GREEN_SIZE, 1,
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EGL_BLUE_SIZE, 1,
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EGL_DEPTH_SIZE, 1,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_NONE
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};
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static const EGLint context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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c->base.display = eglGetDisplay(c->dpy);
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if (c->base.display == NULL) {
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fprintf(stderr, "failed to create display\n");
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return -1;
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}
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if (!eglInitialize(c->base.display, &major, &minor)) {
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fprintf(stderr, "failed to initialize display\n");
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return -1;
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}
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extensions = eglQueryString(c->base.display, EGL_EXTENSIONS);
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if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
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fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
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return -1;
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}
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if (!eglBindAPI(EGL_OPENGL_ES_API)) {
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fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
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return -1;
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}
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if (!eglChooseConfig(c->base.display, config_attribs,
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&c->base.config, 1, &n) || n == 0) {
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fprintf(stderr, "failed to choose config: %d\n", n);
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return -1;
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}
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c->base.context = eglCreateContext(c->base.display, c->base.config,
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EGL_NO_CONTEXT, context_attribs);
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if (c->base.context == NULL) {
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fprintf(stderr, "failed to create context\n");
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return -1;
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}
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if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE,
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EGL_NO_SURFACE, c->base.context)) {
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fprintf(stderr, "failed to make context current\n");
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return -1;
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}
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return 0;
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}
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static int
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x11_output_prepare_render(struct wlsc_output *output_base)
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{
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struct x11_output *output = (struct x11_output *) output_base;
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struct wlsc_compositor *ec = output->base.compositor;
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if (!eglMakeCurrent(ec->display, output->egl_surface,
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output->egl_surface, ec->context)) {
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fprintf(stderr, "failed to make current\n");
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return -1;
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}
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return 0;
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}
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static int
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x11_output_present(struct wlsc_output *output_base)
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{
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struct x11_output *output = (struct x11_output *) output_base;
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struct wlsc_compositor *ec = output->base.compositor;
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struct timeval tv;
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uint32_t msec;
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if (x11_output_prepare_render(&output->base))
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return -1;
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eglSwapBuffers(ec->display, output->egl_surface);
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gettimeofday(&tv, NULL);
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msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
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wlsc_output_finish_frame(&output->base, msec);
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return 0;
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}
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static int
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x11_output_prepare_scanout_surface(struct wlsc_output *output_base,
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struct wlsc_surface *es)
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{
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return -1;
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}
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static int
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x11_output_set_cursor(struct wlsc_output *output_base,
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struct wl_input_device *input)
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{
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return -1;
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}
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static void
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x11_output_set_wm_protocols(struct x11_output *output)
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{
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xcb_atom_t list[1];
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struct x11_compositor *c =
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(struct x11_compositor *) output->base.compositor;
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list[0] = c->atom.wm_delete_window;
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xcb_change_property (c->conn,
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XCB_PROP_MODE_REPLACE,
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output->window,
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c->atom.wm_protocols,
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XCB_ATOM_ATOM,
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32,
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ARRAY_SIZE(list),
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list);
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}
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struct wm_normal_hints {
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uint32_t flags;
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uint32_t pad[4];
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int32_t min_width, min_height;
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int32_t max_width, max_height;
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int32_t width_inc, height_inc;
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int32_t min_aspect_x, min_aspect_y;
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int32_t max_aspect_x, max_aspect_y;
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int32_t base_width, base_height;
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int32_t win_gravity;
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};
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#define WM_NORMAL_HINTS_MIN_SIZE 16
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#define WM_NORMAL_HINTS_MAX_SIZE 32
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static void
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x11_output_set_icon(struct x11_compositor *c, struct x11_output *output,
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const char *filename, int width, int height)
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{
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uint32_t *icon, *pixels;
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pixels = wlsc_load_image(filename, width, height);
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if (!pixels)
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return;
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icon = malloc(width * height * 4 + 8);
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if (!icon) {
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free(pixels);
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return;
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}
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icon[0] = width;
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icon[1] = height;
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memcpy(icon + 2, pixels, width * height * 4);
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xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
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c->atom.net_wm_icon, c->atom.cardinal, 32,
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width * height + 2, icon);
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free(icon);
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free(pixels);
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}
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static int
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x11_compositor_create_output(struct x11_compositor *c, int width, int height)
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{
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static const char name[] = "Wayland Compositor";
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static const char class[] = "wayland-1\0Wayland Compositor";
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struct x11_output *output;
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xcb_screen_iterator_t iter;
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struct wm_normal_hints normal_hints;
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uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
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uint32_t values[2] = {
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XCB_EVENT_MASK_KEY_PRESS |
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XCB_EVENT_MASK_KEY_RELEASE |
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XCB_EVENT_MASK_BUTTON_PRESS |
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XCB_EVENT_MASK_BUTTON_RELEASE |
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XCB_EVENT_MASK_POINTER_MOTION |
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XCB_EVENT_MASK_EXPOSURE |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY |
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XCB_EVENT_MASK_ENTER_WINDOW |
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XCB_EVENT_MASK_LEAVE_WINDOW |
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XCB_EVENT_MASK_KEYMAP_STATE |
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XCB_EVENT_MASK_FOCUS_CHANGE,
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0
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};
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output = malloc(sizeof *output);
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if (output == NULL)
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return -1;
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memset(output, 0, sizeof *output);
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wlsc_output_init(&output->base, &c->base, 0, 0, width, height,
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WL_OUTPUT_FLIPPED);
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values[1] = c->null_cursor;
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output->window = xcb_generate_id(c->conn);
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iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
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xcb_create_window(c->conn,
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XCB_COPY_FROM_PARENT,
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output->window,
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iter.data->root,
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0, 0,
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width, height,
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0,
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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iter.data->root_visual,
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mask, values);
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/* Don't resize me. */
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memset(&normal_hints, 0, sizeof normal_hints);
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normal_hints.flags =
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WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
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normal_hints.min_width = width;
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normal_hints.min_height = height;
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normal_hints.max_width = width;
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normal_hints.max_height = height;
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xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
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c->atom.wm_normal_hints,
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c->atom.wm_size_hints, 32,
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sizeof normal_hints / 4,
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(uint8_t *) &normal_hints);
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/* Set window name. Don't bother with non-EWMH WMs. */
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xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
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c->atom.net_wm_name, c->atom.utf8_string, 8,
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strlen(name), name);
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xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
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c->atom.wm_class, c->atom.string, 8,
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sizeof class, class);
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x11_output_set_icon(c, output,
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DATADIR "/wayland/wayland.png", 128, 128);
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xcb_map_window(c->conn, output->window);
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x11_output_set_wm_protocols(output);
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output->egl_surface =
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eglCreateWindowSurface(c->base.display, c->base.config,
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output->window, NULL);
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if (!output->egl_surface) {
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fprintf(stderr, "failed to create window surface\n");
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return -1;
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}
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if (!eglMakeCurrent(c->base.display, output->egl_surface,
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output->egl_surface, c->base.context)) {
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fprintf(stderr, "failed to make surface current\n");
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return -1;
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}
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output->base.prepare_render = x11_output_prepare_render;
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output->base.present = x11_output_present;
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output->base.prepare_scanout_surface =
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x11_output_prepare_scanout_surface;
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output->base.set_hardware_cursor = x11_output_set_cursor;
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wl_list_insert(c->base.output_list.prev, &output->base.link);
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return 0;
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}
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static struct x11_output *
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x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
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{
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struct x11_output *output;
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wl_list_for_each(output, &c->base.output_list, base.link) {
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if (output->window == window)
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return output;
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}
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return NULL;
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}
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static int
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x11_compositor_next_event(struct x11_compositor *c,
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xcb_generic_event_t **event)
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{
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if (c->next_event) {
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*event = c->next_event;
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c->next_event = NULL;
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} else {
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*event = xcb_poll_for_event (c->conn);
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}
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return *event != NULL;
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}
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static void
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x11_compositor_handle_event(int fd, uint32_t mask, void *data)
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{
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struct x11_compositor *c = data;
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struct x11_output *output;
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xcb_generic_event_t *event, *prev;
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xcb_client_message_event_t *client_message;
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xcb_motion_notify_event_t *motion_notify;
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xcb_enter_notify_event_t *enter_notify;
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xcb_key_press_event_t *key_press, *key_release;
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xcb_button_press_event_t *button_press;
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xcb_keymap_notify_event_t *keymap_notify;
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xcb_focus_in_event_t *focus_in;
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xcb_atom_t atom;
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uint32_t *k;
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int i, set;
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prev = NULL;
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while (x11_compositor_next_event(c, &event)) {
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switch (prev ? prev->response_type & ~0x80 : 0x80) {
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case XCB_KEY_RELEASE:
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key_release = (xcb_key_press_event_t *) prev;
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key_press = (xcb_key_press_event_t *) event;
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if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
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key_release->time == key_press->time) {
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/* Don't deliver the held key release
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* event or the new key press event. */
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free(event);
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free(prev);
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prev = NULL;
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continue;
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} else {
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/* Deliver the held key release now
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* and fall through and handle the new
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* event below. */
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notify_key(c->base.input_device,
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key_release->time,
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key_release->detail - 8, 0);
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free(prev);
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prev = NULL;
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break;
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}
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case XCB_FOCUS_IN:
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/* assert event is keymap_notify */
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focus_in = (xcb_focus_in_event_t *) prev;
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keymap_notify = (xcb_keymap_notify_event_t *) event;
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c->keys.size = 0;
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for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
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set = keymap_notify->keys[i >> 3] &
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(1 << (i & 7));
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if (set) {
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k = wl_array_add(&c->keys, sizeof *k);
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*k = i;
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}
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}
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output = x11_compositor_find_output(c, focus_in->event);
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notify_keyboard_focus(c->base.input_device,
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get_time(),
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&output->base, &c->keys);
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free(prev);
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prev = NULL;
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break;
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default:
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/* No previous event held */
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break;
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}
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switch (event->response_type & ~0x80) {
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case XCB_KEY_PRESS:
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key_press = (xcb_key_press_event_t *) event;
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notify_key(c->base.input_device,
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key_press->time, key_press->detail - 8, 1);
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break;
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case XCB_KEY_RELEASE:
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prev = event;
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break;
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case XCB_BUTTON_PRESS:
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button_press = (xcb_button_press_event_t *) event;
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notify_button(c->base.input_device,
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button_press->time,
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button_press->detail + BTN_LEFT - 1, 1);
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break;
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case XCB_BUTTON_RELEASE:
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button_press = (xcb_button_press_event_t *) event;
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notify_button(c->base.input_device,
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button_press->time,
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button_press->detail + BTN_LEFT - 1, 0);
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break;
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case XCB_MOTION_NOTIFY:
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motion_notify = (xcb_motion_notify_event_t *) event;
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notify_motion(c->base.input_device,
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motion_notify->time,
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motion_notify->event_x,
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motion_notify->event_y);
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break;
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case XCB_EXPOSE:
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/* FIXME: schedule output repaint */
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/* output = x11_compositor_find_output(c, expose->window); */
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wlsc_compositor_schedule_repaint(&c->base);
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break;
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case XCB_ENTER_NOTIFY:
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enter_notify = (xcb_enter_notify_event_t *) event;
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|
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;
|
|
|
|
prev = event;
|
|
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;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (prev != event)
|
|
free (event);
|
|
}
|
|
|
|
switch (prev ? prev->response_type & ~0x80 : 0x80) {
|
|
case XCB_KEY_RELEASE:
|
|
key_release = (xcb_key_press_event_t *) prev;
|
|
notify_key(c->base.input_device,
|
|
key_release->time, key_release->detail - 8, 0);
|
|
free(prev);
|
|
prev = NULL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
x11_compositor_check_source(struct wl_event_source *source, void *data)
|
|
{
|
|
struct x11_compositor *c = data;
|
|
|
|
/* Really? xcb doesn't have a "get queue length" function that
|
|
* doesn't pop an event? */
|
|
c->next_event = xcb_poll_for_queued_event(c->conn);
|
|
|
|
return c->next_event != NULL;
|
|
}
|
|
|
|
#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) },
|
|
{ "STRING", F(atom.string) },
|
|
{ "UTF8_STRING", F(atom.utf8_string) },
|
|
{ "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);
|
|
|
|
c->dpy = XOpenDisplay(NULL);
|
|
if (c->dpy == NULL)
|
|
return NULL;
|
|
|
|
c->conn = XGetXCBConnection(c->dpy);
|
|
if (xcb_connection_has_error(c->conn))
|
|
return NULL;
|
|
|
|
c->next_event = 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)
|
|
return NULL;
|
|
|
|
c->base.destroy = x11_destroy;
|
|
|
|
/* Can't init base class until we have a current egl context */
|
|
if (wlsc_compositor_init(&c->base, display) < 0)
|
|
return NULL;
|
|
|
|
if (x11_compositor_create_output(c, width, height) < 0)
|
|
return NULL;
|
|
|
|
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);
|
|
wl_event_source_check(c->xcb_source, x11_compositor_check_source);
|
|
|
|
return &c->base;
|
|
}
|