compositor/compositor.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #define _GNU_SOURCE
  20
  21 #include "config.h"
  22
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <stdint.h>
  27 #include <limits.h>
  28 #include <stdarg.h>
  29 #include <sys/ioctl.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <gdk-pixbuf/gdk-pixbuf.h>
  33 #include <math.h>
  34 #include <linux/input.h>
  35
  36 #include "wayland-server.h"
  37 #include "compositor.h"
  38
  39 /* The plan here is to generate a random anonymous socket name and
  40  * advertise that through a service on the session dbus.
  41  */
  42 static const char *option_socket_name = NULL;
  43 static const char *option_background = "background.jpg";
  44 static const char *option_geometry = "1024x640";
  45 static int option_connector = 0;
  46
  47 static const GOptionEntry option_entries[] = {
  48         { "background", 'b', 0, G_OPTION_ARG_STRING,
  49           &option_background, "Background image" },
  50         { "connector", 'c', 0, G_OPTION_ARG_INT,
  51           &option_connector, "KMS connector" },
  52         { "geometry", 'g', 0, G_OPTION_ARG_STRING,
  53           &option_geometry, "Geometry" },
  54         { "socket", 's', 0, G_OPTION_ARG_STRING,
  55           &option_socket_name, "Socket Name" },
  56         { NULL }
  57 };
  58
  59 static void
  60 wlsc_matrix_init(struct wlsc_matrix *matrix)
  61 {
  62         static const struct wlsc_matrix identity = {
  63                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  64         };
  65
  66         memcpy(matrix, &identity, sizeof identity);
  67 }
  68
  69 static void
  70 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  71 {
  72         struct wlsc_matrix tmp;
  73         const GLfloat *row, *column;
  74         div_t d;
  75         int i, j;
  76
  77         for (i = 0; i < 16; i++) {
  78                 tmp.d[i] = 0;
  79                 d = div(i, 4);
  80                 row = m->d + d.quot * 4;
  81                 column = n->d + d.rem;
  82                 for (j = 0; j < 4; j++)
  83                         tmp.d[i] += row[j] * column[j * 4];
  84         }
  85         memcpy(m, &tmp, sizeof tmp);
  86 }
  87
  88 static void
  89 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  90 {
  91         struct wlsc_matrix translate = {
  92                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  93         };
  94
  95         wlsc_matrix_multiply(matrix, &translate);
  96 }
  97
  98 static void
  99 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 100 {
 101         struct wlsc_matrix scale = {
 102                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
 103         };
 104
 105         wlsc_matrix_multiply(matrix, &scale);
 106 }
 107
 108 static void
 109 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 110 {
 111         int i, j;
 112         struct wlsc_vector t;
 113
 114         for (i = 0; i < 4; i++) {
 115                 t.f[i] = 0;
 116                 for (j = 0; j < 4; j++)
 117                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 118         }
 119
 120         *v = t;
 121 }
 122
 123 struct wlsc_surface *
 124 wlsc_surface_create(struct wlsc_compositor *compositor,
 125                     int32_t x, int32_t y, int32_t width, int32_t height)
 126 {
 127         struct wlsc_surface *surface;
 128
 129         surface = malloc(sizeof *surface);
 130         if (surface == NULL)
 131                 return NULL;
 132
 133         wl_list_init(&surface->surface.destroy_listener_list);
 134         wl_list_init(&surface->link);
 135         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 136
 137         glGenTextures(1, &surface->texture);
 138         glBindTexture(GL_TEXTURE_2D, surface->texture);
 139         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 140         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 141         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 142         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 143
 144         surface->compositor = compositor;
 145         surface->visual = NULL;
 146         surface->image = EGL_NO_IMAGE_KHR;
 147         surface->saved_texture = 0;
 148         surface->x = x;
 149         surface->y = y;
 150         surface->width = width;
 151         surface->height = height;
 152         wlsc_matrix_init(&surface->matrix);
 153         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 154         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 155
 156         wlsc_matrix_init(&surface->matrix_inv);
 157         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 158         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 159
 160         return surface;
 161 }
 162
 163 void
 164 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 165                               int32_t x, int32_t y,
 166                               int32_t width, int32_t height)
 167 {
 168         struct wlsc_compositor *compositor = surface->compositor;
 169
 170         pixman_region32_union_rect(&compositor->damage_region,
 171                                    &compositor->damage_region,
 172                                    surface->x + x, surface->y + y,
 173                                    width, height);
 174         wlsc_compositor_schedule_repaint(compositor);
 175 }
 176
 177 void
 178 wlsc_surface_damage(struct wlsc_surface *surface)
 179 {
 180         wlsc_surface_damage_rectangle(surface, 0, 0,
 181                                       surface->width, surface->height);
 182 }
 183
 184 uint32_t
 185 get_time(void)
 186 {
 187         struct timeval tv;
 188
 189         gettimeofday(&tv, NULL);
 190
 191         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 192 }
 193
 194 static void
 195 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 196 {
 197         struct wlsc_surface *surface =
 198                 container_of(resource, struct wlsc_surface, surface.resource);
 199         struct wl_listener *l, *next;
 200         uint32_t time;
 201
 202         wlsc_surface_damage(surface);
 203
 204         wl_list_remove(&surface->link);
 205         if (surface->saved_texture == 0)
 206                 glDeleteTextures(1, &surface->texture);
 207         else
 208                 glDeleteTextures(1, &surface->saved_texture);
 209
 210
 211         if (surface->image != EGL_NO_IMAGE_KHR)
 212                 eglDestroyImageKHR(surface->compositor->display,
 213                                    surface->image);
 214
 215         time = get_time();
 216         wl_list_for_each_safe(l, next,
 217                               &surface->surface.destroy_listener_list, link)
 218                 l->func(l, &surface->surface, time);
 219
 220         free(surface);
 221 }
 222
 223 uint32_t *
 224 wlsc_load_image(const char *filename, int width, int height)
 225 {
 226         GdkPixbuf *pixbuf;
 227         GError *error = NULL;
 228         int stride, i, n_channels;
 229         unsigned char *pixels, *end, *argb_pixels, *s, *d;
 230
 231         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 232                                                    width, height,
 233                                                    FALSE, &error);
 234         if (error != NULL) {
 235                 fprintf(stderr, "failed to load image: %s\n", error->message);
 236                 g_error_free(error);
 237                 return NULL;
 238         }
 239
 240         stride = gdk_pixbuf_get_rowstride(pixbuf);
 241         pixels = gdk_pixbuf_get_pixels(pixbuf);
 242         n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 243
 244         argb_pixels = malloc (height * width * 4);
 245         if (argb_pixels == NULL) {
 246                 g_object_unref(pixbuf);
 247                 return NULL;
 248         }
 249
 250         if (n_channels == 4) {
 251                 for (i = 0; i < height; i++) {
 252                         s = pixels + i * stride;
 253                         end = s + width * 4;
 254                         d = argb_pixels + i * width * 4;
 255                         while (s < end) {
 256                                 unsigned int t;
 257
 258 #define MULT(_d,c,a,t) \
 259         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 260
 261                                 MULT(d[0], s[2], s[3], t);
 262                                 MULT(d[1], s[1], s[3], t);
 263                                 MULT(d[2], s[0], s[3], t);
 264                                 d[3] = s[3];
 265                                 s += 4;
 266                                 d += 4;
 267                         }
 268                 }
 269         } else if (n_channels == 3) {
 270                 for (i = 0; i < height; i++) {
 271                         s = pixels + i * stride;
 272                         end = s + width * 3;
 273                         d = argb_pixels + i * width * 4;
 274                         while (s < end) {
 275                                 d[0] = s[2];
 276                                 d[1] = s[1];
 277                                 d[2] = s[0];
 278                                 d[3] = 0xff;
 279                                 s += 3;
 280                                 d += 4;
 281                         }
 282                 }
 283         }
 284
 285         g_object_unref(pixbuf);
 286
 287         return (uint32_t *) argb_pixels;
 288 }
 289
 290 static void
 291 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 292 {
 293         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 294         struct wlsc_compositor *ec = es->compositor;
 295
 296         if (buffer->attach) {
 297                 buffer->attach(buffer, surface);
 298         } else {
 299                 es->image = eglCreateImageKHR(ec->display, ec->context,
 300                                               EGL_WAYLAND_BUFFER_WL,
 301                                               buffer, NULL);
 302
 303                 if (es->saved_texture != 0)
 304                         es->texture = es->saved_texture;
 305                 glBindTexture(GL_TEXTURE_2D, es->texture);
 306                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
 307                 es->visual = buffer->visual;
 308         }
 309 }
 310
 311 static void
 312 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 313 {
 314         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 315
 316         es->image = sprite->image;
 317         if (sprite->image != EGL_NO_IMAGE_KHR) {
 318                 glBindTexture(GL_TEXTURE_2D, es->texture);
 319                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
 320         } else {
 321                 if (es->saved_texture == 0)
 322                         es->saved_texture = es->texture;
 323                 es->texture = sprite->texture;
 324         }
 325
 326         es->visual = sprite->visual;
 327 }
 328
 329 enum sprite_usage {
 330         SPRITE_USE_CURSOR = (1 << 0),
 331 };
 332
 333 static struct wlsc_sprite *
 334 create_sprite_from_png(struct wlsc_compositor *ec,
 335                        const char *filename, int width, int height,
 336                        uint32_t usage)
 337 {
 338         uint32_t *pixels;
 339         struct wlsc_sprite *sprite;
 340
 341         pixels = wlsc_load_image(filename, width, height);
 342         if(pixels == NULL)
 343                 return NULL;
 344
 345         sprite = malloc(sizeof *sprite);
 346         if (sprite == NULL) {
 347                 free(pixels);
 348                 return NULL;
 349         }
 350
 351         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 352         sprite->width = width;
 353         sprite->height = height;
 354         sprite->image = EGL_NO_IMAGE_KHR;
 355
 356         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 357                 sprite->image = ec->create_cursor_image(ec, width, height);
 358
 359         glGenTextures(1, &sprite->texture);
 360         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 361         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 362         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 363         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 364         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 365
 366         if (sprite->image != EGL_NO_IMAGE_KHR) {
 367                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, sprite->image);
 368                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 369                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 370         } else {
 371                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 372                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 373         }
 374
 375         free(pixels);
 376
 377         return sprite;
 378 }
 379
 380 static const struct {
 381         const char *filename;
 382         int hotspot_x, hotspot_y;
 383 } pointer_images[] = {
 384         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 385         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 386         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 387         { DATADIR "/wayland/grabbing.png",              20, 17 },
 388         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 389         { DATADIR "/wayland/left_side.png",             10, 20 },
 390         { DATADIR "/wayland/right_side.png",            30, 19 },
 391         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 392         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 393         { DATADIR "/wayland/top_side.png",              18,  8 },
 394         { DATADIR "/wayland/xterm.png",                 15, 15 }
 395 };
 396
 397 static void
 398 create_pointer_images(struct wlsc_compositor *ec)
 399 {
 400         int i, count;
 401         const int width = 32, height = 32;
 402
 403         count = ARRAY_LENGTH(pointer_images);
 404         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 405         for (i = 0; i < count; i++) {
 406                 ec->pointer_sprites[i] =
 407                         create_sprite_from_png(ec,
 408                                                pointer_images[i].filename,
 409                                                width, height,
 410                                                SPRITE_USE_CURSOR);
 411         }
 412 }
 413
 414 static struct wlsc_surface *
 415 background_create(struct wlsc_output *output, const char *filename)
 416 {
 417         struct wlsc_surface *background;
 418         struct wlsc_sprite *sprite;
 419
 420         background = wlsc_surface_create(output->compositor,
 421                                          output->x, output->y,
 422                                          output->width, output->height);
 423         if (background == NULL)
 424                 return NULL;
 425
 426         sprite = create_sprite_from_png(output->compositor, filename,
 427                                         output->width, output->height, 0);
 428         if (sprite == NULL) {
 429                 free(background);
 430                 return NULL;
 431         }
 432
 433         wlsc_sprite_attach(sprite, &background->surface);
 434
 435         return background;
 436 }
 437
 438 static void
 439 wlsc_surface_draw(struct wlsc_surface *es,
 440                   struct wlsc_output *output, pixman_region32_t *clip)
 441 {
 442         struct wlsc_compositor *ec = es->compositor;
 443         GLfloat *v, inv_width, inv_height;
 444         unsigned int *p;
 445         pixman_region32_t repaint;
 446         pixman_box32_t *rectangles;
 447         int i, n;
 448
 449         pixman_region32_init_rect(&repaint,
 450                                   es->x, es->y, es->width, es->height);
 451         pixman_region32_intersect(&repaint, &repaint, clip);
 452         if (!pixman_region32_not_empty(&repaint))
 453                 return;
 454
 455         if (es->visual == &ec->compositor.argb_visual) {
 456                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 457                 glEnable(GL_BLEND);
 458         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 459                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 460                 glEnable(GL_BLEND);
 461         } else {
 462                 glDisable(GL_BLEND);
 463         }
 464
 465         rectangles = pixman_region32_rectangles(&repaint, &n);
 466         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 467         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 468         inv_width = 1.0 / es->width;
 469         inv_height = 1.0 / es->height;
 470         for (i = 0; i < n; i++, v += 16, p += 6) {
 471                 v[ 0] = rectangles[i].x1;
 472                 v[ 1] = rectangles[i].y1;
 473                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 474                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 475
 476                 v[ 4] = rectangles[i].x1;
 477                 v[ 5] = rectangles[i].y2;
 478                 v[ 6] = v[ 2];
 479                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 480
 481                 v[ 8] = rectangles[i].x2;
 482                 v[ 9] = rectangles[i].y1;
 483                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 484                 v[11] = v[ 3];
 485
 486                 v[12] = rectangles[i].x2;
 487                 v[13] = rectangles[i].y2;
 488                 v[14] = v[10];
 489                 v[15] = v[ 7];
 490
 491                 p[0] = i * 4 + 0;
 492                 p[1] = i * 4 + 1;
 493                 p[2] = i * 4 + 2;
 494                 p[3] = i * 4 + 2;
 495                 p[4] = i * 4 + 1;
 496                 p[5] = i * 4 + 3;
 497         }
 498
 499         glBindTexture(GL_TEXTURE_2D, es->texture);
 500         v = ec->vertices.data;
 501         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 502         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 503         glEnableVertexAttribArray(0);
 504         glEnableVertexAttribArray(1);
 505         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 506
 507         ec->vertices.size = 0;
 508         ec->indices.size = 0;
 509         pixman_region32_fini(&repaint);
 510 }
 511
 512 static void
 513 wlsc_surface_raise(struct wlsc_surface *surface)
 514 {
 515         struct wlsc_compositor *compositor = surface->compositor;
 516
 517         wl_list_remove(&surface->link);
 518         wl_list_insert(&compositor->surface_list, &surface->link);
 519 }
 520
 521 void
 522 wlsc_surface_update_matrix(struct wlsc_surface *es)
 523 {
 524         wlsc_matrix_init(&es->matrix);
 525         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 526         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 527
 528         wlsc_matrix_init(&es->matrix_inv);
 529         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 530         wlsc_matrix_scale(&es->matrix_inv,
 531                           1.0 / es->width, 1.0 / es->height, 1);
 532 }
 533
 534 void
 535 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 536 {
 537         struct wlsc_compositor *compositor = output->compositor;
 538         struct wlsc_surface *es;
 539
 540         wl_list_for_each(es, &compositor->surface_list, link) {
 541                 if (es->output == output) {
 542                         wl_display_post_frame(compositor->wl_display,
 543                                               &es->surface, msecs);
 544                 }
 545         }
 546
 547         output->finished = 1;
 548
 549         wl_event_source_timer_update(compositor->timer_source, 5);
 550         compositor->repaint_on_timeout = 1;
 551 }
 552
 553 static void
 554 wlsc_output_repaint(struct wlsc_output *output)
 555 {
 556         struct wlsc_compositor *ec = output->compositor;
 557         struct wlsc_surface *es;
 558         struct wlsc_input_device *eid;
 559         pixman_region32_t new_damage, total_damage, repaint;
 560         int using_hardware_cursor = 1;
 561
 562         output->prepare_render(output);
 563
 564         glViewport(0, 0, output->width, output->height);
 565
 566         glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, output->matrix.d);
 567         glUniform1i(ec->tex_uniform, 0);
 568
 569         pixman_region32_init(&new_damage);
 570         pixman_region32_init(&total_damage);
 571         pixman_region32_intersect_rect(&new_damage,
 572                                        &ec->damage_region,
 573                                        output->x, output->y,
 574                                        output->width, output->height);
 575         pixman_region32_subtract(&ec->damage_region,
 576                                  &ec->damage_region, &new_damage);
 577         pixman_region32_union(&total_damage, &new_damage,
 578                               &output->previous_damage_region);
 579         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 580
 581         if (ec->focus)
 582                 if (output->set_hardware_cursor(output, ec->input_device) < 0)
 583                         using_hardware_cursor = 0;
 584
 585         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 586         if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN &&
 587             es->fullscreen_output == output) {
 588                 if (es->visual == &ec->compositor.rgb_visual &&
 589                     using_hardware_cursor) {
 590                         if (output->prepare_scanout_surface(output, es) == 0) {
 591                                 /* We're drawing nothing now,
 592                                  * draw the damaged regions later. */
 593                                 pixman_region32_union(&ec->damage_region,
 594                                                       &ec->damage_region,
 595                                                       &total_damage);
 596                                 return;
 597                         }
 598                 }
 599
 600                 if (es->width < output->width ||
 601                     es->height < output->height)
 602                         glClear(GL_COLOR_BUFFER_BIT);
 603                 wlsc_surface_draw(es, output, &total_damage);
 604         } else {
 605                 wl_list_for_each(es, &ec->surface_list, link) {
 606                         if (es->visual != &ec->compositor.rgb_visual)
 607                                 continue;
 608
 609                         pixman_region32_init_rect(&repaint,
 610                                                   es->x, es->y,
 611                                                   es->width, es->height);
 612                         wlsc_surface_draw(es, output, &total_damage);
 613                         pixman_region32_subtract(&total_damage,
 614                                                  &total_damage, &repaint);
 615                 }
 616
 617                 if (output->background)
 618                         wlsc_surface_draw(output->background,
 619                                           output, &total_damage);
 620                 else
 621                         glClear(GL_COLOR_BUFFER_BIT);
 622
 623                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 624                         if (ec->overlay == es)
 625                                 continue;
 626
 627                         if (es->visual == &ec->compositor.rgb_visual) {
 628                                 pixman_region32_union_rect(&total_damage,
 629                                                            &total_damage,
 630                                                            es->x, es->y,
 631                                                            es->width, es->height);
 632                                 continue;
 633                         }
 634
 635                         wlsc_surface_draw(es, output, &total_damage);
 636                 }
 637         }
 638
 639         if (ec->overlay)
 640                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 641
 642         if (ec->focus)
 643                 wl_list_for_each(eid, &ec->input_device_list, link) {
 644                         if (&eid->input_device != ec->input_device ||
 645                             !using_hardware_cursor)
 646                                 wlsc_surface_draw(eid->sprite, output,
 647                                                   &total_damage);
 648                 }
 649 }
 650
 651 static void
 652 repaint(void *data)
 653 {
 654         struct wlsc_compositor *ec = data;
 655         struct wlsc_output *output;
 656         int repainted_all_outputs = 1;
 657
 658         wl_list_for_each(output, &ec->output_list, link) {
 659                 if (!output->repaint_needed)
 660                         continue;
 661
 662                 if (!output->finished) {
 663                         repainted_all_outputs = 0;
 664                         continue;
 665                 }
 666
 667                 wlsc_output_repaint(output);
 668                 output->finished = 0;
 669                 output->repaint_needed = 0;
 670                 output->present(output);
 671         }
 672
 673         if (repainted_all_outputs)
 674                 ec->repaint_on_timeout = 0;
 675         else
 676                 wl_event_source_timer_update(ec->timer_source, 1);
 677 }
 678
 679 void
 680 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 681 {
 682         struct wlsc_output *output;
 683
 684         wl_list_for_each(output, &compositor->output_list, link)
 685                 output->repaint_needed = 1;
 686
 687         if (compositor->repaint_on_timeout)
 688                 return;
 689
 690         wl_event_source_timer_update(compositor->timer_source, 1);
 691         compositor->repaint_on_timeout = 1;
 692 }
 693
 694 static void
 695 surface_destroy(struct wl_client *client,
 696                 struct wl_surface *surface)
 697 {
 698         wl_resource_destroy(&surface->resource, client);
 699 }
 700
 701 void
 702 wlsc_surface_assign_output(struct wlsc_surface *es)
 703 {
 704         struct wlsc_compositor *ec = es->compositor;
 705         struct wlsc_output *output;
 706
 707         struct wlsc_output *tmp = es->output;
 708         es->output = NULL;
 709
 710         wl_list_for_each(output, &ec->output_list, link) {
 711                 if (output->x < es->x && es->x < output->x + output->width &&
 712                     output->y < es->y && es->y < output->y + output->height) {
 713                         if (output != tmp)
 714                                 printf("assiging surface %p to output %p\n",
 715                                        es, output);
 716                         es->output = output;
 717                 }
 718         }
 719
 720         if (es->output == NULL) {
 721                 printf("no output found\n");
 722                 es->output = container_of(ec->output_list.next,
 723                                           struct wlsc_output, link);
 724         }
 725 }
 726
 727 static void
 728 surface_attach(struct wl_client *client,
 729                struct wl_surface *surface, struct wl_buffer *buffer,
 730                int32_t x, int32_t y)
 731 {
 732         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 733
 734         /* FIXME: This damages the entire old surface, but we should
 735          * really just damage the part that's no longer covered by the
 736          * surface.  Anything covered by the new surface will be
 737          * damaged by the client. */
 738         wlsc_surface_damage(es);
 739
 740         wlsc_buffer_attach(buffer, surface);
 741
 742         es->buffer = buffer;
 743         es->x += x;
 744         es->y += y;
 745         es->width = buffer->width;
 746         es->height = buffer->height;
 747         if (x != 0 || y != 0)
 748                 wlsc_surface_assign_output(es);
 749         wlsc_surface_update_matrix(es);
 750 }
 751
 752 static void
 753 surface_map_toplevel(struct wl_client *client,
 754                      struct wl_surface *surface)
 755 {
 756         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 757         struct wlsc_compositor *ec = es->compositor;
 758
 759         switch (es->map_type) {
 760         case WLSC_SURFACE_MAP_UNMAPPED:
 761                 es->x = 10 + random() % 400;
 762                 es->y = 10 + random() % 400;
 763                 wlsc_surface_update_matrix(es);
 764                 /* assign to first output */
 765                 es->output = container_of(ec->output_list.next,
 766                                           struct wlsc_output, link);
 767                 wl_list_insert(&es->compositor->surface_list, &es->link);
 768                 break;
 769         case WLSC_SURFACE_MAP_TOPLEVEL:
 770                 return;
 771         case WLSC_SURFACE_MAP_FULLSCREEN:
 772                 es->fullscreen_output = NULL;
 773                 es->x = es->saved_x;
 774                 es->y = es->saved_y;
 775                 wlsc_surface_update_matrix(es);
 776                 break;
 777         default:
 778                 break;
 779         }
 780
 781         wlsc_surface_damage(es);
 782         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 783 }
 784
 785 static void
 786 surface_map_transient(struct wl_client *client,
 787                       struct wl_surface *surface, struct wl_surface *parent,
 788                       int x, int y, uint32_t flags)
 789 {
 790         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 791         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 792
 793         switch (es->map_type) {
 794         case WLSC_SURFACE_MAP_UNMAPPED:
 795                 wl_list_insert(&es->compositor->surface_list, &es->link);
 796                 /* assign to parents output  */
 797                 es->output = pes->output;
 798                 break;
 799         case WLSC_SURFACE_MAP_FULLSCREEN:
 800                 es->fullscreen_output = NULL;
 801                 break;
 802         default:
 803                 break;
 804         }
 805
 806         es->x = pes->x + x;
 807         es->y = pes->y + y;
 808
 809         wlsc_surface_update_matrix(es);
 810         wlsc_surface_damage(es);
 811         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
 812 }
 813
 814 static void
 815 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
 816 {
 817         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 818         struct wlsc_output *output;
 819
 820         /* FIXME: Fullscreen on first output */
 821         /* FIXME: Handle output going away */
 822         output = container_of(es->compositor->output_list.next,
 823                               struct wlsc_output, link);
 824
 825         switch (es->map_type) {
 826         case WLSC_SURFACE_MAP_UNMAPPED:
 827                 es->x = 10 + random() % 400;
 828                 es->y = 10 + random() % 400;
 829                 /* assign to first output */
 830                 es->output = output;
 831                 wl_list_insert(&es->compositor->surface_list, &es->link);
 832                 break;
 833         case WLSC_SURFACE_MAP_FULLSCREEN:
 834                 return;
 835         default:
 836                 break;
 837         }
 838
 839         es->saved_x = es->x;
 840         es->saved_y = es->y;
 841         es->x = (output->width - es->width) / 2;
 842         es->y = (output->height - es->height) / 2;
 843         es->fullscreen_output = output;
 844         wlsc_surface_update_matrix(es);
 845         wlsc_surface_damage(es);
 846         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
 847 }
 848
 849 static void
 850 surface_damage(struct wl_client *client,
 851                struct wl_surface *surface,
 852                int32_t x, int32_t y, int32_t width, int32_t height)
 853 {
 854         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 855
 856         es->buffer->damage(es->buffer, surface, x, y, width, height);
 857
 858         wlsc_surface_damage_rectangle(es, x, y, width, height);
 859 }
 860
 861 const static struct wl_surface_interface surface_interface = {
 862         surface_destroy,
 863         surface_attach,
 864         surface_map_toplevel,
 865         surface_map_transient,
 866         surface_map_fullscreen,
 867         surface_damage
 868 };
 869
 870 static void
 871 wlsc_input_device_attach(struct wlsc_input_device *device,
 872                          int x, int y, int width, int height)
 873 {
 874         wlsc_surface_damage(device->sprite);
 875
 876         device->hotspot_x = x;
 877         device->hotspot_y = y;
 878
 879         device->sprite->x = device->input_device.x - device->hotspot_x;
 880         device->sprite->y = device->input_device.y - device->hotspot_y;
 881         device->sprite->width = width;
 882         device->sprite->height = height;
 883         wlsc_surface_update_matrix(device->sprite);
 884
 885         wlsc_surface_damage(device->sprite);
 886 }
 887
 888 static void
 889 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
 890                                 struct wl_buffer *buffer, int x, int y)
 891 {
 892         wlsc_buffer_attach(buffer, &device->sprite->surface);
 893         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
 894 }
 895
 896 static void
 897 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
 898                                 struct wlsc_sprite *sprite, int x, int y)
 899 {
 900         wlsc_sprite_attach(sprite, &device->sprite->surface);
 901         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
 902 }
 903
 904 void
 905 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
 906                                     enum wlsc_pointer_type type)
 907 {
 908         struct wlsc_compositor *compositor =
 909                 (struct wlsc_compositor *) device->input_device.compositor;
 910
 911         wlsc_input_device_attach_sprite(device,
 912                                         compositor->pointer_sprites[type],
 913                                         pointer_images[type].hotspot_x,
 914                                         pointer_images[type].hotspot_y);
 915 }
 916
 917 static void
 918 compositor_create_surface(struct wl_client *client,
 919                           struct wl_compositor *compositor, uint32_t id)
 920 {
 921         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
 922         struct wlsc_surface *surface;
 923
 924         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
 925         if (surface == NULL) {
 926                 wl_client_post_no_memory(client);
 927                 return;
 928         }
 929
 930         surface->surface.resource.destroy = destroy_surface;
 931
 932         surface->surface.resource.object.id = id;
 933         surface->surface.resource.object.interface = &wl_surface_interface;
 934         surface->surface.resource.object.implementation =
 935                 (void (**)(void)) &surface_interface;
 936         surface->surface.client = client;
 937
 938         wl_client_add_resource(client, &surface->surface.resource);
 939 }
 940
 941 const static struct wl_compositor_interface compositor_interface = {
 942         compositor_create_surface,
 943 };
 944
 945 static void
 946 wlsc_surface_transform(struct wlsc_surface *surface,
 947                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 948 {
 949         struct wlsc_vector v = { { x, y, 0, 1 } };
 950
 951         wlsc_matrix_transform(&surface->matrix_inv, &v);
 952         *sx = v.f[0] * surface->width;
 953         *sy = v.f[1] * surface->height;
 954 }
 955
 956 struct wlsc_surface *
 957 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
 958 {
 959         struct wlsc_compositor *ec =
 960                 (struct wlsc_compositor *) device->compositor;
 961         struct wlsc_surface *es;
 962
 963         wl_list_for_each(es, &ec->surface_list, link) {
 964                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
 965                 if (0 <= *sx && *sx < es->width &&
 966                     0 <= *sy && *sy < es->height)
 967                         return es;
 968         }
 969
 970         return NULL;
 971 }
 972
 973
 974 static void
 975 motion_grab_motion(struct wl_grab *grab,
 976                    uint32_t time, int32_t x, int32_t y)
 977 {
 978         struct wlsc_input_device *device =
 979                 (struct wlsc_input_device *) grab->input_device;
 980         struct wlsc_surface *es =
 981                 (struct wlsc_surface *) device->input_device.pointer_focus;
 982         int32_t sx, sy;
 983
 984         wlsc_surface_transform(es, x, y, &sx, &sy);
 985         wl_client_post_event(es->surface.client,
 986                              &device->input_device.object,
 987                              WL_INPUT_DEVICE_MOTION,
 988                              time, x, y, sx, sy);
 989 }
 990
 991 static void
 992 motion_grab_button(struct wl_grab *grab,
 993                    uint32_t time, int32_t button, int32_t state)
 994 {
 995         wl_client_post_event(grab->input_device->pointer_focus->client,
 996                              &grab->input_device->object,
 997                              WL_INPUT_DEVICE_BUTTON,
 998                              time, button, state);
 999 }
1000
1001 static void
1002 motion_grab_end(struct wl_grab *grab, uint32_t time)
1003 {
1004 }
1005
1006 static const struct wl_grab_interface motion_grab_interface = {
1007         motion_grab_motion,
1008         motion_grab_button,
1009         motion_grab_end
1010 };
1011
1012 void
1013 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1014 {
1015         struct wlsc_surface *es;
1016         struct wlsc_compositor *ec =
1017                 (struct wlsc_compositor *) device->compositor;
1018         struct wlsc_output *output;
1019         const struct wl_grab_interface *interface;
1020         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1021         int32_t sx, sy;
1022         int x_valid = 0, y_valid = 0;
1023         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1024
1025         wl_list_for_each(output, &ec->output_list, link) {
1026                 if (output->x <= x && x <= output->x + output->width)
1027                         x_valid = 1;
1028
1029                 if (output->y <= y && y <= output->y + output->height)
1030                         y_valid = 1;
1031
1032                 /* FIXME: calculate this only on output addition/deletion */
1033                 if (output->x < min_x)
1034                         min_x = output->x;
1035                 if (output->y < min_y)
1036                         min_y = output->y;
1037
1038                 if (output->x + output->width > max_x)
1039                         max_x = output->x + output->width;
1040                 if (output->y + output->height > max_y)
1041                         max_y = output->y + output->height;
1042         }
1043
1044         if (!x_valid) {
1045                 if (x < min_x)
1046                         x = min_x;
1047                 else if (x >= max_x)
1048                         x = max_x;
1049         }
1050         if (!y_valid) {
1051                 if (y < min_y)
1052                         y = min_y;
1053                 else  if (y >= max_y)
1054                         y = max_y;
1055         }
1056
1057         device->x = x;
1058         device->y = y;
1059
1060         if (device->grab) {
1061                 interface = device->grab->interface;
1062                 interface->motion(device->grab, time, x, y);
1063         } else {
1064                 es = pick_surface(device, &sx, &sy);
1065                 wl_input_device_set_pointer_focus(device,
1066                                                   &es->surface,
1067                                                   time, x, y, sx, sy);
1068                 if (es)
1069                         wl_client_post_event(es->surface.client,
1070                                              &device->object,
1071                                              WL_INPUT_DEVICE_MOTION,
1072                                              time, x, y, sx, sy);
1073         }
1074
1075         wlsc_surface_damage(wd->sprite);
1076
1077         wd->sprite->x = device->x - wd->hotspot_x;
1078         wd->sprite->y = device->y - wd->hotspot_y;
1079         wlsc_surface_update_matrix(wd->sprite);
1080
1081         wlsc_surface_damage(wd->sprite);
1082 }
1083
1084 void
1085 wlsc_surface_activate(struct wlsc_surface *surface,
1086                       struct wlsc_input_device *device, uint32_t time)
1087 {
1088         wlsc_surface_raise(surface);
1089         if (device->selection)
1090                 wlsc_selection_set_focus(device->selection,
1091                                          &surface->surface, time);
1092
1093         wl_input_device_set_keyboard_focus(&device->input_device,
1094                                            &surface->surface,
1095                                            time);
1096 }
1097
1098 struct wlsc_binding {
1099         uint32_t key;
1100         uint32_t button;
1101         uint32_t modifier;
1102         wlsc_binding_handler_t handler;
1103         void *data;
1104         struct wl_list link;
1105 };
1106
1107 void
1108 notify_button(struct wl_input_device *device,
1109               uint32_t time, int32_t button, int32_t state)
1110 {
1111         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1112         struct wlsc_compositor *compositor =
1113                 (struct wlsc_compositor *) device->compositor;
1114         struct wlsc_binding *b;
1115         struct wlsc_surface *surface =
1116                 (struct wlsc_surface *) device->pointer_focus;
1117
1118         if (state && surface && device->grab == NULL) {
1119                 wlsc_surface_activate(surface, wd, time);
1120                 wl_input_device_start_grab(device,
1121                                            &device->motion_grab,
1122                                            button, time);
1123         }
1124
1125         wl_list_for_each(b, &compositor->binding_list, link) {
1126                 if (b->button == button &&
1127                     b->modifier == wd->modifier_state && state) {
1128                         b->handler(&wd->input_device,
1129                                    time, 0, button, state, b->data);
1130                         break;
1131                 }
1132         }
1133
1134         if (device->grab)
1135                 device->grab->interface->button(device->grab, time,
1136                                                 button, state);
1137
1138         if (!state && device->grab && device->grab_button == button)
1139                 wl_input_device_end_grab(device, time);
1140 }
1141
1142 static void
1143 terminate_binding(struct wl_input_device *device, uint32_t time,
1144                   uint32_t key, uint32_t button, uint32_t state, void *data)
1145 {
1146         struct wlsc_compositor *compositor = data;
1147
1148         wl_display_terminate(compositor->wl_display);
1149 }
1150
1151 struct wlsc_binding *
1152 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1153                             uint32_t key, uint32_t button, uint32_t modifier,
1154                             wlsc_binding_handler_t handler, void *data)
1155 {
1156         struct wlsc_binding *binding;
1157
1158         binding = malloc(sizeof *binding);
1159         if (binding == NULL)
1160                 return NULL;
1161
1162         binding->key = key;
1163         binding->button = button;
1164         binding->modifier = modifier;
1165         binding->handler = handler;
1166         binding->data = data;
1167         wl_list_insert(compositor->binding_list.prev, &binding->link);
1168
1169         return binding;
1170 }
1171
1172 void
1173 wlsc_binding_destroy(struct wlsc_binding *binding)
1174 {
1175         wl_list_remove(&binding->link);
1176         free(binding);
1177 }
1178
1179 static void
1180 update_modifier_state(struct wlsc_input_device *device,
1181                       uint32_t key, uint32_t state)
1182 {
1183         uint32_t modifier;
1184
1185         switch (key) {
1186         case KEY_LEFTCTRL:
1187         case KEY_RIGHTCTRL:
1188                 modifier = MODIFIER_CTRL;
1189                 break;
1190
1191         case KEY_LEFTALT:
1192         case KEY_RIGHTALT:
1193                 modifier = MODIFIER_ALT;
1194                 break;
1195
1196         case KEY_LEFTMETA:
1197         case KEY_RIGHTMETA:
1198                 modifier = MODIFIER_SUPER;
1199                 break;
1200
1201         default:
1202                 modifier = 0;
1203                 break;
1204         }
1205
1206         if (state)
1207                 device->modifier_state |= modifier;
1208         else
1209                 device->modifier_state &= ~modifier;
1210 }
1211
1212 void
1213 notify_key(struct wl_input_device *device,
1214            uint32_t time, uint32_t key, uint32_t state)
1215 {
1216         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1217         struct wlsc_compositor *compositor =
1218                 (struct wlsc_compositor *) device->compositor;
1219         uint32_t *k, *end;
1220         struct wlsc_binding *b;
1221
1222         wl_list_for_each(b, &compositor->binding_list, link) {
1223                 if (b->key == key &&
1224                     b->modifier == wd->modifier_state && state) {
1225                         b->handler(&wd->input_device,
1226                                    time, key, 0, state, b->data);
1227                         break;
1228                 }
1229         }
1230
1231         update_modifier_state(wd, key, state);
1232         end = device->keys.data + device->keys.size;
1233         for (k = device->keys.data; k < end; k++) {
1234                 if (*k == key)
1235                         *k = *--end;
1236         }
1237         device->keys.size = (void *) end - device->keys.data;
1238         if (state) {
1239                 k = wl_array_add(&device->keys, sizeof *k);
1240                 *k = key;
1241         }
1242
1243         if (device->keyboard_focus != NULL)
1244                 wl_client_post_event(device->keyboard_focus->client,
1245                                      &device->object,
1246                                      WL_INPUT_DEVICE_KEY, time, key, state);
1247 }
1248
1249 void
1250 notify_pointer_focus(struct wl_input_device *device,
1251                      uint32_t time, struct wlsc_output *output,
1252                      int32_t x, int32_t y)
1253 {
1254         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1255         struct wlsc_compositor *compositor =
1256                 (struct wlsc_compositor *) device->compositor;
1257         struct wlsc_surface *es;
1258         int32_t sx, sy;
1259
1260         if (output) {
1261                 device->x = x;
1262                 device->y = y;
1263                 es = pick_surface(device, &sx, &sy);
1264                 wl_input_device_set_pointer_focus(device,
1265                                                   &es->surface,
1266                                                   time, x, y, sx, sy);
1267
1268                 compositor->focus = 1;
1269
1270                 wd->sprite->x = device->x - wd->hotspot_x;
1271                 wd->sprite->y = device->y - wd->hotspot_y;
1272                 wlsc_surface_update_matrix(wd->sprite);
1273         } else {
1274                 wl_input_device_set_pointer_focus(device, NULL,
1275                                                   time, 0, 0, 0, 0);
1276                 compositor->focus = 0;
1277         }
1278
1279         wlsc_surface_damage(wd->sprite);
1280 }
1281
1282 void
1283 notify_keyboard_focus(struct wl_input_device *device,
1284                       uint32_t time, struct wlsc_output *output,
1285                       struct wl_array *keys)
1286 {
1287         struct wlsc_input_device *wd =
1288                 (struct wlsc_input_device *) device;
1289         struct wlsc_compositor *compositor =
1290                 (struct wlsc_compositor *) device->compositor;
1291         struct wlsc_surface *es;
1292         uint32_t *k, *end;
1293
1294         if (!wl_list_empty(&compositor->surface_list))
1295                 es = container_of(compositor->surface_list.next,
1296                                   struct wlsc_surface, link);
1297         else
1298                 es = NULL;
1299
1300         if (output) {
1301                 wl_array_copy(&wd->input_device.keys, keys);
1302                 wd->modifier_state = 0;
1303                 end = device->keys.data + device->keys.size;
1304                 for (k = device->keys.data; k < end; k++) {
1305                         update_modifier_state(wd, *k, 1);
1306                 }
1307
1308                 wl_input_device_set_keyboard_focus(&wd->input_device,
1309                                                    &es->surface, time);
1310         } else {
1311                 wd->modifier_state = 0;
1312                 wl_input_device_set_keyboard_focus(&wd->input_device,
1313                                                    NULL, time);
1314         }
1315 }
1316
1317
1318 static void
1319 input_device_attach(struct wl_client *client,
1320                     struct wl_input_device *device_base,
1321                     uint32_t time,
1322                     struct wl_buffer *buffer, int32_t x, int32_t y)
1323 {
1324         struct wlsc_input_device *device =
1325                 (struct wlsc_input_device *) device_base;
1326
1327         if (time < device->input_device.pointer_focus_time)
1328                 return;
1329         if (device->input_device.pointer_focus == NULL)
1330                 return;
1331         if (device->input_device.pointer_focus->client != client)
1332                 return;
1333
1334         if (buffer == NULL) {
1335                 wlsc_input_device_set_pointer_image(device,
1336                                                     WLSC_POINTER_LEFT_PTR);
1337                 return;
1338         }
1339
1340         wlsc_input_device_attach_buffer(device, buffer, x, y);
1341 }
1342
1343 const static struct wl_input_device_interface input_device_interface = {
1344         input_device_attach,
1345 };
1346
1347 void
1348 wlsc_input_device_init(struct wlsc_input_device *device,
1349                        struct wlsc_compositor *ec)
1350 {
1351         wl_input_device_init(&device->input_device, &ec->compositor);
1352
1353         device->input_device.object.interface = &wl_input_device_interface;
1354         device->input_device.object.implementation =
1355                 (void (**)(void)) &input_device_interface;
1356         wl_display_add_object(ec->wl_display, &device->input_device.object);
1357         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1358
1359         device->sprite = wlsc_surface_create(ec,
1360                                              device->input_device.x,
1361                                              device->input_device.y, 32, 32);
1362         device->hotspot_x = 16;
1363         device->hotspot_y = 16;
1364         device->modifier_state = 0;
1365
1366         device->input_device.motion_grab.interface = &motion_grab_interface;
1367
1368         wl_list_insert(ec->input_device_list.prev, &device->link);
1369
1370         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1371 }
1372
1373 static void
1374 wlsc_output_post_geometry(struct wl_client *client,
1375                           struct wl_object *global, uint32_t version)
1376 {
1377         struct wlsc_output *output =
1378                 container_of(global, struct wlsc_output, object);
1379
1380         wl_client_post_event(client, global,
1381                              WL_OUTPUT_GEOMETRY,
1382                              output->x, output->y,
1383                              output->width, output->height);
1384 }
1385
1386 static const char vertex_shader[] =
1387         "uniform mat4 proj;\n"
1388         "attribute vec2 position;\n"
1389         "attribute vec2 texcoord;\n"
1390         "varying vec2 v_texcoord;\n"
1391         "void main()\n"
1392         "{\n"
1393         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1394         "   v_texcoord = texcoord;\n"
1395         "}\n";
1396
1397 static const char fragment_shader[] =
1398         "precision mediump float;\n"
1399         "varying vec2 v_texcoord;\n"
1400         "uniform sampler2D tex;\n"
1401         "void main()\n"
1402         "{\n"
1403         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1404         "}\n";
1405
1406 static int
1407 init_shaders(struct wlsc_compositor *ec)
1408 {
1409         GLuint v, f, program;
1410         const char *p;
1411         char msg[512];
1412         GLint status;
1413
1414         p = vertex_shader;
1415         v = glCreateShader(GL_VERTEX_SHADER);
1416         glShaderSource(v, 1, &p, NULL);
1417         glCompileShader(v);
1418         glGetShaderiv(v, GL_COMPILE_STATUS, &status);
1419         if (!status) {
1420                 glGetShaderInfoLog(v, sizeof msg, NULL, msg);
1421                 fprintf(stderr, "vertex shader info: %s\n", msg);
1422                 return -1;
1423         }
1424
1425         p = fragment_shader;
1426         f = glCreateShader(GL_FRAGMENT_SHADER);
1427         glShaderSource(f, 1, &p, NULL);
1428         glCompileShader(f);
1429         glGetShaderiv(f, GL_COMPILE_STATUS, &status);
1430         if (!status) {
1431                 glGetShaderInfoLog(f, sizeof msg, NULL, msg);
1432                 fprintf(stderr, "fragment shader info: %s\n", msg);
1433                 return -1;
1434         }
1435
1436         program = glCreateProgram();
1437         glAttachShader(program, v);
1438         glAttachShader(program, f);
1439         glBindAttribLocation(program, 0, "position");
1440         glBindAttribLocation(program, 1, "texcoord");
1441
1442         glLinkProgram(program);
1443         glGetProgramiv(program, GL_LINK_STATUS, &status);
1444         if (!status) {
1445                 glGetProgramInfoLog(program, sizeof msg, NULL, msg);
1446                 fprintf(stderr, "link info: %s\n", msg);
1447                 return -1;
1448         }
1449
1450         glUseProgram(program);
1451         ec->proj_uniform = glGetUniformLocation(program, "proj");
1452         ec->tex_uniform = glGetUniformLocation(program, "tex");
1453
1454         return 0;
1455 }
1456
1457 void
1458 wlsc_output_destroy(struct wlsc_output *output)
1459 {
1460         destroy_surface(&output->background->surface.resource, NULL);
1461 }
1462
1463 void
1464 wlsc_output_move(struct wlsc_output *output, int x, int y)
1465 {
1466         struct wlsc_compositor *c = output->compositor;
1467         int flip;
1468
1469         output->x = x;
1470         output->y = y;
1471
1472         if (output->background) {
1473                 output->background->x = x;
1474                 output->background->y = y;
1475                 wlsc_surface_update_matrix(output->background);
1476         }
1477
1478         pixman_region32_init(&output->previous_damage_region);
1479
1480         wlsc_matrix_init(&output->matrix);
1481         wlsc_matrix_translate(&output->matrix,
1482                               -output->x - output->width / 2.0,
1483                               -output->y - output->height / 2.0, 0);
1484
1485         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1486         wlsc_matrix_scale(&output->matrix,
1487                           2.0 / output->width,
1488                           flip * 2.0 / output->height, 1);
1489
1490         pixman_region32_union_rect(&c->damage_region,
1491                                    &c->damage_region,
1492                                    x, y, output->width, output->height);
1493 }
1494
1495 void
1496 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1497                  int x, int y, int width, int height, uint32_t flags)
1498 {
1499         output->compositor = c;
1500         output->x = x;
1501         output->y = y;
1502         output->width = width;
1503         output->height = height;
1504
1505         output->background =
1506                 background_create(output, option_background);
1507
1508         output->flags = flags;
1509         output->finished = 1;
1510         wlsc_output_move(output, x, y);
1511
1512         output->object.interface = &wl_output_interface;
1513         wl_display_add_object(c->wl_display, &output->object);
1514         wl_display_add_global(c->wl_display, &output->object,
1515                               wlsc_output_post_geometry);
1516 }
1517
1518 int
1519 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1520 {
1521         struct wl_event_loop *loop;
1522         const char *extensions;
1523
1524         ec->wl_display = display;
1525
1526         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1527
1528         wlsc_shm_init(ec);
1529         eglBindWaylandDisplayWL(ec->display, ec->wl_display);
1530
1531         wl_list_init(&ec->surface_list);
1532         wl_list_init(&ec->input_device_list);
1533         wl_list_init(&ec->output_list);
1534         wl_list_init(&ec->binding_list);
1535
1536         wlsc_shell_init(ec);
1537         wlsc_switcher_init(ec);
1538
1539         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1540                                     MODIFIER_CTRL | MODIFIER_ALT,
1541                                     terminate_binding, ec);
1542
1543         create_pointer_images(ec);
1544
1545         screenshooter_create(ec);
1546
1547         extensions = (const char *) glGetString(GL_EXTENSIONS);
1548         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1549                 fprintf(stderr,
1550                         "GL_EXT_texture_format_BGRA8888 not available\n");
1551                 return -1;
1552         }
1553
1554         glActiveTexture(GL_TEXTURE0);
1555         if (init_shaders(ec) < 0)
1556                 return -1;
1557
1558         loop = wl_display_get_event_loop(ec->wl_display);
1559         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1560         pixman_region32_init(&ec->damage_region);
1561         wlsc_compositor_schedule_repaint(ec);
1562
1563         return 0;
1564 }
1565
1566 static void on_term_signal(int signal_number, void *data)
1567 {
1568         struct wlsc_compositor *ec = data;
1569
1570         wl_display_terminate(ec->wl_display);
1571 }
1572
1573 int main(int argc, char *argv[])
1574 {
1575         struct wl_display *display;
1576         struct wlsc_compositor *ec;
1577         struct wl_event_loop *loop;
1578         GError *error = NULL;
1579         GOptionContext *context;
1580         int width, height;
1581
1582         g_type_init(); /* GdkPixbuf needs this, it seems. */
1583
1584         context = g_option_context_new(NULL);
1585         g_option_context_add_main_entries(context, option_entries, "Wayland");
1586         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1587                 fprintf(stderr, "option parsing failed: %s\n", error->message);
1588                 exit(EXIT_FAILURE);
1589         }
1590         if (sscanf(option_geometry, "%dx%d", &width, &height) != 2) {
1591                 fprintf(stderr, "invalid geometry option: %s \n",
1592                         option_geometry);
1593                 exit(EXIT_FAILURE);
1594         }
1595
1596         display = wl_display_create();
1597
1598         ec = NULL;
1599
1600 #if BUILD_WAYLAND_COMPOSITOR
1601         if (getenv("WAYLAND_DISPLAY"))
1602                 ec = wayland_compositor_create(display, width, height);
1603 #endif
1604
1605 #if BUILD_X11_COMPOSITOR
1606         if (ec == NULL && getenv("DISPLAY"))
1607                 ec = x11_compositor_create(display, width, height);
1608 #endif
1609
1610 #if BUILD_OPENWFD_COMPOSITOR
1611         if (ec == NULL && getenv("OPENWFD"))
1612                 ec = wfd_compositor_create(display, option_connector);
1613 #endif
1614
1615 #if BUILD_DRM_COMPOSITOR
1616         if (ec == NULL)
1617                 ec = drm_compositor_create(display, option_connector);
1618 #endif
1619
1620         if (ec == NULL) {
1621                 fprintf(stderr, "failed to create compositor\n");
1622                 exit(EXIT_FAILURE);
1623         }
1624
1625         if (wl_display_add_socket(display, option_socket_name)) {
1626                 fprintf(stderr, "failed to add socket: %m\n");
1627                 exit(EXIT_FAILURE);
1628         }
1629
1630         loop = wl_display_get_event_loop(ec->wl_display);
1631         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
1632         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
1633
1634         wl_display_run(display);
1635
1636         eglUnbindWaylandDisplayWL(ec->display, display);
1637         wl_display_destroy(display);
1638
1639         ec->destroy(ec);
1640
1641         return 0;
1642 }