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 <math.h>
  33 #include <linux/input.h>
  34 #include <dlfcn.h>
  35 #include <getopt.h>
  36 #include <signal.h>
  37
  38 #include "wayland-server.h"
  39 #include "compositor.h"
  40
  41 /* The plan here is to generate a random anonymous socket name and
  42  * advertise that through a service on the session dbus.
  43  */
  44 static const char *option_socket_name = NULL;
  45 static const char *option_background = "background.jpg";
  46 static const char *option_shell = NULL;
  47 static int option_idle_time = 300;
  48 static int option_connector = 0;
  49
  50 WL_EXPORT void
  51 wlsc_matrix_init(struct wlsc_matrix *matrix)
  52 {
  53         static const struct wlsc_matrix identity = {
  54                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  55         };
  56
  57         memcpy(matrix, &identity, sizeof identity);
  58 }
  59
  60 static void
  61 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  62 {
  63         struct wlsc_matrix tmp;
  64         const GLfloat *row, *column;
  65         div_t d;
  66         int i, j;
  67
  68         for (i = 0; i < 16; i++) {
  69                 tmp.d[i] = 0;
  70                 d = div(i, 4);
  71                 row = m->d + d.quot * 4;
  72                 column = n->d + d.rem;
  73                 for (j = 0; j < 4; j++)
  74                         tmp.d[i] += row[j] * column[j * 4];
  75         }
  76         memcpy(m, &tmp, sizeof tmp);
  77 }
  78
  79 static void
  80 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  81 {
  82         struct wlsc_matrix translate = {
  83                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  84         };
  85
  86         wlsc_matrix_multiply(matrix, &translate);
  87 }
  88
  89 static void
  90 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  91 {
  92         struct wlsc_matrix scale = {
  93                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
  94         };
  95
  96         wlsc_matrix_multiply(matrix, &scale);
  97 }
  98
  99 static void
 100 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 101 {
 102         int i, j;
 103         struct wlsc_vector t;
 104
 105         for (i = 0; i < 4; i++) {
 106                 t.f[i] = 0;
 107                 for (j = 0; j < 4; j++)
 108                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 109         }
 110
 111         *v = t;
 112 }
 113
 114 WL_EXPORT void
 115 wlsc_tweener_init(struct wlsc_tweener *tweener,
 116                   double k, double current, double target)
 117 {
 118         tweener->k = k;
 119         tweener->friction = 100.0;
 120         tweener->current = current;
 121         tweener->previous = current;
 122         tweener->target = target;
 123 }
 124
 125 WL_EXPORT void
 126 wlsc_tweener_update(struct wlsc_tweener *tweener, uint32_t msec)
 127 {
 128         double force, v, current, step;
 129
 130         step = (msec - tweener->timestamp) / 500.0;
 131         tweener->timestamp = msec;
 132
 133         current = tweener->current;
 134         v = current - tweener->previous;
 135         force = tweener->k * (tweener->target - current) / 10.0 +
 136                 (tweener->previous - current) - v * tweener->friction;
 137
 138         tweener->current =
 139                 current + (current - tweener->previous) + force * step * step;
 140         tweener->previous = current;
 141
 142         if (tweener->current >= 1.0) {
 143 #ifdef TWEENER_BOUNCE
 144                 tweener->current = 2.0 - tweener->current;
 145                 tweener->previous = 2.0 - tweener->previous;
 146 #else
 147                 tweener->current = 1.0;
 148                 tweener->previous = 1.0;
 149 #endif
 150         }
 151
 152         if (tweener->current <= 0.0) {
 153                 tweener->current = 0.0;
 154                 tweener->previous = 0.0;
 155         }
 156 }
 157
 158 WL_EXPORT int
 159 wlsc_tweener_done(struct wlsc_tweener *tweener)
 160 {
 161         return fabs(tweener->previous - tweener->target) < 0.0002 &&
 162                 fabs(tweener->current - tweener->target) < 0.0002;
 163 }
 164
 165 WL_EXPORT struct wlsc_surface *
 166 wlsc_surface_create(struct wlsc_compositor *compositor,
 167                     int32_t x, int32_t y, int32_t width, int32_t height)
 168 {
 169         struct wlsc_surface *surface;
 170
 171         surface = malloc(sizeof *surface);
 172         if (surface == NULL)
 173                 return NULL;
 174
 175         wl_list_init(&surface->surface.destroy_listener_list);
 176         wl_list_init(&surface->link);
 177         wl_list_init(&surface->buffer_link);
 178         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 179
 180         glGenTextures(1, &surface->texture);
 181         glBindTexture(GL_TEXTURE_2D, surface->texture);
 182         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 183         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 184         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 185         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 186
 187         surface->compositor = compositor;
 188         surface->visual = NULL;
 189         surface->image = EGL_NO_IMAGE_KHR;
 190         surface->saved_texture = 0;
 191         surface->x = x;
 192         surface->y = y;
 193         surface->width = width;
 194         surface->height = height;
 195         wlsc_matrix_init(&surface->matrix);
 196         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 197         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 198
 199         wlsc_matrix_init(&surface->matrix_inv);
 200         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 201         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 202
 203         return surface;
 204 }
 205
 206 WL_EXPORT void
 207 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 208                               int32_t x, int32_t y,
 209                               int32_t width, int32_t height)
 210 {
 211         struct wlsc_compositor *compositor = surface->compositor;
 212
 213         pixman_region32_union_rect(&compositor->damage_region,
 214                                    &compositor->damage_region,
 215                                    surface->x + x, surface->y + y,
 216                                    width, height);
 217         wlsc_compositor_schedule_repaint(compositor);
 218 }
 219
 220 WL_EXPORT void
 221 wlsc_surface_damage(struct wlsc_surface *surface)
 222 {
 223         wlsc_surface_damage_rectangle(surface, 0, 0,
 224                                       surface->width, surface->height);
 225 }
 226
 227 WL_EXPORT uint32_t
 228 wlsc_compositor_get_time(void)
 229 {
 230         struct timeval tv;
 231
 232         gettimeofday(&tv, NULL);
 233
 234         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 235 }
 236
 237 static void
 238 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 239 {
 240         struct wlsc_surface *surface =
 241                 container_of(resource, struct wlsc_surface, surface.resource);
 242         struct wl_listener *l, *next;
 243         struct wlsc_compositor *compositor = surface->compositor;
 244         uint32_t time;
 245
 246         wlsc_surface_damage(surface);
 247
 248         wl_list_remove(&surface->link);
 249         if (surface->saved_texture == 0)
 250                 glDeleteTextures(1, &surface->texture);
 251         else
 252                 glDeleteTextures(1, &surface->saved_texture);
 253
 254
 255         if (surface->image != EGL_NO_IMAGE_KHR)
 256                 compositor->destroy_image(compositor->display,
 257                                           surface->image);
 258
 259         wl_list_remove(&surface->buffer_link);
 260
 261         time = wlsc_compositor_get_time();
 262         wl_list_for_each_safe(l, next,
 263                               &surface->surface.destroy_listener_list, link)
 264                 l->func(l, &surface->surface, time);
 265
 266         free(surface);
 267 }
 268
 269 static void
 270 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 271 {
 272         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 273         struct wlsc_compositor *ec = es->compositor;
 274         struct wl_list *surfaces_attached_to;
 275
 276         if (es->saved_texture != 0)
 277                 es->texture = es->saved_texture;
 278
 279         glBindTexture(GL_TEXTURE_2D, es->texture);
 280
 281         if (wl_buffer_is_shm(buffer)) {
 282                 /* Unbind any EGLImage texture that may be bound, so we don't
 283                  * overwrite it.*/
 284                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 285                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 286                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 287                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 288                              es->pitch, buffer->height, 0,
 289                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 290                              wl_shm_buffer_get_data(buffer));
 291                 es->visual = buffer->visual;
 292
 293                 surfaces_attached_to = buffer->user_data;
 294
 295                 wl_list_remove(&es->buffer_link);
 296                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 297         } else {
 298                 es->image = ec->create_image(ec->display, NULL,
 299                                              EGL_WAYLAND_BUFFER_WL,
 300                                              buffer, NULL);
 301
 302                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 303                 es->visual = buffer->visual;
 304                 es->pitch = es->width;
 305         }
 306 }
 307
 308 static void
 309 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 310 {
 311         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 312         struct wlsc_compositor *ec = es->compositor;
 313
 314         es->pitch = es->width;
 315         es->image = sprite->image;
 316         if (sprite->image != EGL_NO_IMAGE_KHR) {
 317                 glBindTexture(GL_TEXTURE_2D, es->texture);
 318                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 319         } else {
 320                 if (es->saved_texture == 0)
 321                         es->saved_texture = es->texture;
 322                 es->texture = sprite->texture;
 323         }
 324
 325         es->visual = sprite->visual;
 326 }
 327
 328 enum sprite_usage {
 329         SPRITE_USE_CURSOR = (1 << 0),
 330 };
 331
 332 static struct wlsc_sprite *
 333 create_sprite_from_png(struct wlsc_compositor *ec,
 334                        const char *filename, uint32_t usage)
 335 {
 336         uint32_t *pixels;
 337         struct wlsc_sprite *sprite;
 338         int32_t width, height;
 339         uint32_t stride;
 340
 341         pixels = wlsc_load_image(filename, &width, &height, &stride);
 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                 ec->image_target_texture_2d(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
 402         count = ARRAY_LENGTH(pointer_images);
 403         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 404         for (i = 0; i < count; i++) {
 405                 ec->pointer_sprites[i] =
 406                         create_sprite_from_png(ec,
 407                                                pointer_images[i].filename,
 408                                                SPRITE_USE_CURSOR);
 409         }
 410 }
 411
 412 static struct wlsc_surface *
 413 background_create(struct wlsc_output *output, const char *filename)
 414 {
 415         struct wlsc_surface *background;
 416         struct wlsc_sprite *sprite;
 417
 418         background = wlsc_surface_create(output->compositor,
 419                                          output->x, output->y,
 420                                          output->width, output->height);
 421         if (background == NULL)
 422                 return NULL;
 423
 424         sprite = create_sprite_from_png(output->compositor, filename, 0);
 425         if (sprite == NULL) {
 426                 free(background);
 427                 return NULL;
 428         }
 429
 430         wlsc_sprite_attach(sprite, &background->surface);
 431
 432         return background;
 433 }
 434
 435 static void
 436 wlsc_surface_draw(struct wlsc_surface *es,
 437                   struct wlsc_output *output, pixman_region32_t *clip)
 438 {
 439         struct wlsc_compositor *ec = es->compositor;
 440         GLfloat *v, inv_width, inv_height;
 441         unsigned int *p;
 442         pixman_region32_t repaint;
 443         pixman_box32_t *rectangles;
 444         int i, n;
 445
 446         pixman_region32_init_rect(&repaint,
 447                                   es->x, es->y, es->width, es->height);
 448         pixman_region32_intersect(&repaint, &repaint, clip);
 449         if (!pixman_region32_not_empty(&repaint))
 450                 return;
 451
 452         if (es->visual == &ec->compositor.argb_visual) {
 453                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 454                 glEnable(GL_BLEND);
 455         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 456                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 457                 glEnable(GL_BLEND);
 458         } else {
 459                 glDisable(GL_BLEND);
 460         }
 461
 462         rectangles = pixman_region32_rectangles(&repaint, &n);
 463         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 464         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 465         inv_width = 1.0 / es->pitch;
 466         inv_height = 1.0 / es->height;
 467         for (i = 0; i < n; i++, v += 16, p += 6) {
 468                 v[ 0] = rectangles[i].x1;
 469                 v[ 1] = rectangles[i].y1;
 470                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 471                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 472
 473                 v[ 4] = rectangles[i].x1;
 474                 v[ 5] = rectangles[i].y2;
 475                 v[ 6] = v[ 2];
 476                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 477
 478                 v[ 8] = rectangles[i].x2;
 479                 v[ 9] = rectangles[i].y1;
 480                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 481                 v[11] = v[ 3];
 482
 483                 v[12] = rectangles[i].x2;
 484                 v[13] = rectangles[i].y2;
 485                 v[14] = v[10];
 486                 v[15] = v[ 7];
 487
 488                 p[0] = i * 4 + 0;
 489                 p[1] = i * 4 + 1;
 490                 p[2] = i * 4 + 2;
 491                 p[3] = i * 4 + 2;
 492                 p[4] = i * 4 + 1;
 493                 p[5] = i * 4 + 3;
 494         }
 495
 496         glBindTexture(GL_TEXTURE_2D, es->texture);
 497         v = ec->vertices.data;
 498         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 499         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 500         glEnableVertexAttribArray(0);
 501         glEnableVertexAttribArray(1);
 502         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 503
 504         ec->vertices.size = 0;
 505         ec->indices.size = 0;
 506         pixman_region32_fini(&repaint);
 507 }
 508
 509 static void
 510 wlsc_surface_raise(struct wlsc_surface *surface)
 511 {
 512         struct wlsc_compositor *compositor = surface->compositor;
 513
 514         wl_list_remove(&surface->link);
 515         wl_list_insert(&compositor->surface_list, &surface->link);
 516 }
 517
 518 WL_EXPORT void
 519 wlsc_surface_update_matrix(struct wlsc_surface *es)
 520 {
 521         wlsc_matrix_init(&es->matrix);
 522         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 523         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 524
 525         wlsc_matrix_init(&es->matrix_inv);
 526         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 527         wlsc_matrix_scale(&es->matrix_inv,
 528                           1.0 / es->width, 1.0 / es->height, 1);
 529 }
 530
 531 WL_EXPORT void
 532 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 533 {
 534         struct wlsc_output *output;
 535
 536         wl_list_for_each(output, &compositor->output_list, link)
 537                 wlsc_output_damage(output);
 538 }
 539
 540 WL_EXPORT void
 541 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 542 {
 543         struct wlsc_compositor *compositor = output->compositor;
 544         struct wlsc_surface *es;
 545         struct wlsc_animation *animation, *next;
 546
 547         wl_list_for_each(es, &compositor->surface_list, link) {
 548                 if (es->output == output) {
 549                         wl_display_post_frame(compositor->wl_display,
 550                                               &es->surface, msecs);
 551                 }
 552         }
 553
 554         output->finished = 1;
 555
 556         wl_event_source_timer_update(compositor->timer_source, 5);
 557         compositor->repaint_on_timeout = 1;
 558
 559         wl_list_for_each_safe(animation, next,
 560                               &compositor->animation_list, link)
 561                 animation->frame(animation, output, msecs);
 562 }
 563
 564 WL_EXPORT void
 565 wlsc_output_damage(struct wlsc_output *output)
 566 {
 567         struct wlsc_compositor *compositor = output->compositor;
 568
 569         pixman_region32_union_rect(&compositor->damage_region,
 570                                    &compositor->damage_region,
 571                                    output->x, output->y,
 572                                    output->width, output->height);
 573         wlsc_compositor_schedule_repaint(compositor);
 574 }
 575
 576 static void
 577 fade_frame(struct wlsc_animation *animation,
 578            struct wlsc_output *output, uint32_t msecs)
 579 {
 580         struct wlsc_compositor *compositor =
 581                 container_of(animation,
 582                              struct wlsc_compositor, fade.animation);
 583
 584         wlsc_tweener_update(&compositor->fade.tweener, msecs);
 585         if (wlsc_tweener_done(&compositor->fade.tweener)) {
 586                 if (compositor->fade.tweener.current > 0.999) {
 587                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 588                         compositor->shell->lock(compositor->shell);
 589                 }
 590                 compositor->fade.tweener.current =
 591                         compositor->fade.tweener.target;
 592                 wl_list_remove(&animation->link);
 593                 wl_list_init(&animation->link);
 594         }
 595
 596         wlsc_output_damage(output);
 597 }
 598
 599 static void
 600 fade_output(struct wlsc_output *output,
 601             GLfloat tint, pixman_region32_t *region)
 602 {
 603         struct wlsc_compositor *compositor = output->compositor;
 604         struct wlsc_surface surface;
 605         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 606
 607         surface.compositor = compositor;
 608         surface.x = output->x;
 609         surface.y = output->y;
 610         surface.width = output->width;
 611         surface.height = output->height;
 612         surface.texture = GL_NONE;
 613
 614         if (tint <= 1.0)
 615                 surface.visual =
 616                         &compositor->compositor.premultiplied_argb_visual;
 617         else
 618                 surface.visual = &compositor->compositor.rgb_visual;
 619
 620         glUseProgram(compositor->solid_shader.program);
 621         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 622                            1, GL_FALSE, output->matrix.d);
 623         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 624         wlsc_surface_draw(&surface, output, region);
 625 }
 626
 627 static void
 628 wlsc_output_repaint(struct wlsc_output *output)
 629 {
 630         struct wlsc_compositor *ec = output->compositor;
 631         struct wlsc_surface *es;
 632         struct wlsc_input_device *eid;
 633         pixman_region32_t new_damage, total_damage, repaint;
 634         int using_hardware_cursor = 1;
 635
 636         output->prepare_render(output);
 637
 638         glViewport(0, 0, output->width, output->height);
 639
 640         glUseProgram(ec->texture_shader.program);
 641         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 642                            1, GL_FALSE, output->matrix.d);
 643         glUniform1i(ec->texture_shader.tex_uniform, 0);
 644
 645         pixman_region32_init(&new_damage);
 646         pixman_region32_init(&total_damage);
 647         pixman_region32_intersect_rect(&new_damage,
 648                                        &ec->damage_region,
 649                                        output->x, output->y,
 650                                        output->width, output->height);
 651         pixman_region32_subtract(&ec->damage_region,
 652                                  &ec->damage_region, &new_damage);
 653         pixman_region32_union(&total_damage, &new_damage,
 654                               &output->previous_damage_region);
 655         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 656
 657         if (ec->focus)
 658                 if (output->set_hardware_cursor(output, ec->input_device) < 0)
 659                         using_hardware_cursor = 0;
 660         if (ec->fade.tweener.current > 0.001)
 661                 using_hardware_cursor = 0;
 662
 663         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 664         if (es->fullscreen_output == output) {
 665                 if (es->visual == &ec->compositor.rgb_visual &&
 666                     using_hardware_cursor) {
 667                         if (output->prepare_scanout_surface(output, es) == 0) {
 668                                 /* We're drawing nothing now,
 669                                  * draw the damaged regions later. */
 670                                 pixman_region32_union(&ec->damage_region,
 671                                                       &ec->damage_region,
 672                                                       &total_damage);
 673                                 return;
 674                         }
 675                 }
 676
 677                 if (es->width < output->width ||
 678                     es->height < output->height)
 679                         glClear(GL_COLOR_BUFFER_BIT);
 680                 wlsc_surface_draw(es, output, &total_damage);
 681         } else {
 682                 wl_list_for_each(es, &ec->surface_list, link) {
 683                         if (es->visual != &ec->compositor.rgb_visual)
 684                                 continue;
 685
 686                         pixman_region32_init_rect(&repaint,
 687                                                   es->x, es->y,
 688                                                   es->width, es->height);
 689                         wlsc_surface_draw(es, output, &total_damage);
 690                         pixman_region32_subtract(&total_damage,
 691                                                  &total_damage, &repaint);
 692                 }
 693
 694                 if (output->background)
 695                         wlsc_surface_draw(output->background,
 696                                           output, &total_damage);
 697                 else
 698                         fade_output(output, 1.0, &total_damage);
 699
 700                 glUseProgram(ec->texture_shader.program);
 701                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 702                         if (ec->overlay == es)
 703                                 continue;
 704
 705                         if (es->visual == &ec->compositor.rgb_visual) {
 706                                 pixman_region32_union_rect(&total_damage,
 707                                                            &total_damage,
 708                                                            es->x, es->y,
 709                                                            es->width, es->height);
 710                                 continue;
 711                         }
 712
 713                         wlsc_surface_draw(es, output, &total_damage);
 714                 }
 715         }
 716
 717         if (ec->overlay)
 718                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 719
 720         if (ec->focus)
 721                 wl_list_for_each(eid, &ec->input_device_list, link) {
 722                         if (&eid->input_device != ec->input_device ||
 723                             !using_hardware_cursor)
 724                                 wlsc_surface_draw(eid->sprite, output,
 725                                                   &total_damage);
 726                 }
 727
 728         if (ec->fade.tweener.current > 0.001)
 729                 fade_output(output, ec->fade.tweener.current, &total_damage);
 730 }
 731
 732 static int
 733 repaint(void *data)
 734 {
 735         struct wlsc_compositor *ec = data;
 736         struct wlsc_output *output;
 737         int repainted_all_outputs = 1;
 738
 739         wl_list_for_each(output, &ec->output_list, link) {
 740                 if (!output->repaint_needed)
 741                         continue;
 742
 743                 if (!output->finished) {
 744                         repainted_all_outputs = 0;
 745                         continue;
 746                 }
 747
 748                 wlsc_output_repaint(output);
 749                 output->finished = 0;
 750                 output->repaint_needed = 0;
 751                 output->present(output);
 752         }
 753
 754         if (repainted_all_outputs)
 755                 ec->repaint_on_timeout = 0;
 756         else
 757                 wl_event_source_timer_update(ec->timer_source, 1);
 758
 759         return 1;
 760 }
 761
 762 WL_EXPORT void
 763 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 764 {
 765         struct wlsc_output *output;
 766
 767         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 768                 return;
 769
 770         wl_list_for_each(output, &compositor->output_list, link)
 771                 output->repaint_needed = 1;
 772
 773         if (compositor->repaint_on_timeout)
 774                 return;
 775
 776         wl_event_source_timer_update(compositor->timer_source, 1);
 777         compositor->repaint_on_timeout = 1;
 778 }
 779
 780 WL_EXPORT void
 781 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 782 {
 783         int done;
 784
 785         done = wlsc_tweener_done(&compositor->fade.tweener);
 786         compositor->fade.tweener.target = tint;
 787         if (wlsc_tweener_done(&compositor->fade.tweener))
 788                 return;
 789
 790         if (done)
 791                 compositor->fade.tweener.timestamp =
 792                         wlsc_compositor_get_time();
 793
 794         wlsc_compositor_damage_all(compositor);
 795         if (wl_list_empty(&compositor->fade.animation.link))
 796                 wl_list_insert(compositor->animation_list.prev,
 797                                &compositor->fade.animation.link);
 798 }
 799
 800 static void
 801 surface_destroy(struct wl_client *client,
 802                 struct wl_surface *surface)
 803 {
 804         wl_resource_destroy(&surface->resource, client);
 805 }
 806
 807 WL_EXPORT void
 808 wlsc_surface_assign_output(struct wlsc_surface *es)
 809 {
 810         struct wlsc_compositor *ec = es->compositor;
 811         struct wlsc_output *output;
 812
 813         struct wlsc_output *tmp = es->output;
 814         es->output = NULL;
 815
 816         wl_list_for_each(output, &ec->output_list, link) {
 817                 if (output->x < es->x && es->x < output->x + output->width &&
 818                     output->y < es->y && es->y < output->y + output->height) {
 819                         if (output != tmp)
 820                                 printf("assiging surface %p to output %p\n",
 821                                        es, output);
 822                         es->output = output;
 823                 }
 824         }
 825
 826         if (es->output == NULL) {
 827                 printf("no output found\n");
 828                 es->output = container_of(ec->output_list.next,
 829                                           struct wlsc_output, link);
 830         }
 831 }
 832
 833 static void
 834 surface_attach(struct wl_client *client,
 835                struct wl_surface *surface, struct wl_buffer *buffer,
 836                int32_t x, int32_t y)
 837 {
 838         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 839
 840         /* FIXME: This damages the entire old surface, but we should
 841          * really just damage the part that's no longer covered by the
 842          * surface.  Anything covered by the new surface will be
 843          * damaged by the client. */
 844         wlsc_surface_damage(es);
 845
 846         wlsc_buffer_attach(buffer, surface);
 847
 848         switch (es->map_type) {
 849         case WLSC_SURFACE_MAP_FULLSCREEN:
 850                 es->x = (es->fullscreen_output->width - es->width) / 2;
 851                 es->y = (es->fullscreen_output->height - es->height) / 2;
 852                 break;
 853         default:
 854                 es->x += x;
 855                 es->y += y;
 856                 break;
 857         }
 858         es->width = buffer->width;
 859         es->height = buffer->height;
 860         if (x != 0 || y != 0)
 861                 wlsc_surface_assign_output(es);
 862         wlsc_surface_update_matrix(es);
 863
 864         es->compositor->shell->attach(es->compositor->shell, es);
 865 }
 866
 867 static void
 868 surface_map_toplevel(struct wl_client *client,
 869                      struct wl_surface *surface)
 870 {
 871         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 872         struct wlsc_compositor *ec = es->compositor;
 873
 874         switch (es->map_type) {
 875         case WLSC_SURFACE_MAP_UNMAPPED:
 876                 es->x = 10 + random() % 400;
 877                 es->y = 10 + random() % 400;
 878                 wlsc_surface_update_matrix(es);
 879                 /* assign to first output */
 880                 es->output = container_of(ec->output_list.next,
 881                                           struct wlsc_output, link);
 882                 wl_list_insert(&es->compositor->surface_list, &es->link);
 883                 break;
 884         case WLSC_SURFACE_MAP_TOPLEVEL:
 885                 return;
 886         case WLSC_SURFACE_MAP_FULLSCREEN:
 887                 es->fullscreen_output = NULL;
 888                 es->x = es->saved_x;
 889                 es->y = es->saved_y;
 890                 wlsc_surface_update_matrix(es);
 891                 break;
 892         default:
 893                 break;
 894         }
 895
 896         wlsc_surface_damage(es);
 897         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 898 }
 899
 900 static void
 901 surface_map_transient(struct wl_client *client,
 902                       struct wl_surface *surface, struct wl_surface *parent,
 903                       int x, int y, uint32_t flags)
 904 {
 905         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 906         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 907
 908         switch (es->map_type) {
 909         case WLSC_SURFACE_MAP_UNMAPPED:
 910                 wl_list_insert(&es->compositor->surface_list, &es->link);
 911                 /* assign to parents output  */
 912                 es->output = pes->output;
 913                 break;
 914         case WLSC_SURFACE_MAP_FULLSCREEN:
 915                 es->fullscreen_output = NULL;
 916                 break;
 917         default:
 918                 break;
 919         }
 920
 921         es->x = pes->x + x;
 922         es->y = pes->y + y;
 923
 924         wlsc_surface_update_matrix(es);
 925         wlsc_surface_damage(es);
 926         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
 927 }
 928
 929 static void
 930 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
 931 {
 932         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 933         struct wlsc_output *output;
 934
 935         /* FIXME: Fullscreen on first output */
 936         /* FIXME: Handle output going away */
 937         output = container_of(es->compositor->output_list.next,
 938                               struct wlsc_output, link);
 939
 940         switch (es->map_type) {
 941         case WLSC_SURFACE_MAP_UNMAPPED:
 942                 es->x = 10 + random() % 400;
 943                 es->y = 10 + random() % 400;
 944                 /* assign to first output */
 945                 es->output = output;
 946                 wl_list_insert(&es->compositor->surface_list, &es->link);
 947                 break;
 948         case WLSC_SURFACE_MAP_FULLSCREEN:
 949                 return;
 950         default:
 951                 break;
 952         }
 953
 954         es->saved_x = es->x;
 955         es->saved_y = es->y;
 956         es->x = (output->width - es->width) / 2;
 957         es->y = (output->height - es->height) / 2;
 958         es->fullscreen_output = output;
 959         wlsc_surface_update_matrix(es);
 960         wlsc_surface_damage(es);
 961         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
 962 }
 963
 964 static void
 965 surface_damage(struct wl_client *client,
 966                struct wl_surface *surface,
 967                int32_t x, int32_t y, int32_t width, int32_t height)
 968 {
 969         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 970
 971         wlsc_surface_damage_rectangle(es, x, y, width, height);
 972 }
 973
 974 const static struct wl_surface_interface surface_interface = {
 975         surface_destroy,
 976         surface_attach,
 977         surface_map_toplevel,
 978         surface_map_transient,
 979         surface_map_fullscreen,
 980         surface_damage
 981 };
 982
 983 static void
 984 wlsc_input_device_attach(struct wlsc_input_device *device,
 985                          int x, int y, int width, int height)
 986 {
 987         wlsc_surface_damage(device->sprite);
 988
 989         device->hotspot_x = x;
 990         device->hotspot_y = y;
 991
 992         device->sprite->x = device->input_device.x - device->hotspot_x;
 993         device->sprite->y = device->input_device.y - device->hotspot_y;
 994         device->sprite->width = width;
 995         device->sprite->height = height;
 996         wlsc_surface_update_matrix(device->sprite);
 997
 998         wlsc_surface_damage(device->sprite);
 999 }
1000
1001 static void
1002 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1003                                 struct wl_buffer *buffer, int x, int y)
1004 {
1005         wlsc_buffer_attach(buffer, &device->sprite->surface);
1006         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1007 }
1008
1009 static void
1010 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1011                                 struct wlsc_sprite *sprite, int x, int y)
1012 {
1013         wlsc_sprite_attach(sprite, &device->sprite->surface);
1014         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1015 }
1016
1017 void
1018 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1019                                     enum wlsc_pointer_type type)
1020 {
1021         struct wlsc_compositor *compositor =
1022                 (struct wlsc_compositor *) device->input_device.compositor;
1023
1024         wlsc_input_device_attach_sprite(device,
1025                                         compositor->pointer_sprites[type],
1026                                         pointer_images[type].hotspot_x,
1027                                         pointer_images[type].hotspot_y);
1028 }
1029
1030 static void
1031 compositor_create_surface(struct wl_client *client,
1032                           struct wl_compositor *compositor, uint32_t id)
1033 {
1034         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1035         struct wlsc_surface *surface;
1036
1037         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1038         if (surface == NULL) {
1039                 wl_client_post_no_memory(client);
1040                 return;
1041         }
1042
1043         surface->surface.resource.destroy = destroy_surface;
1044
1045         surface->surface.resource.object.id = id;
1046         surface->surface.resource.object.interface = &wl_surface_interface;
1047         surface->surface.resource.object.implementation =
1048                 (void (**)(void)) &surface_interface;
1049         surface->surface.client = client;
1050
1051         wl_client_add_resource(client, &surface->surface.resource);
1052 }
1053
1054 const static struct wl_compositor_interface compositor_interface = {
1055         compositor_create_surface,
1056 };
1057
1058 static void
1059 wlsc_surface_transform(struct wlsc_surface *surface,
1060                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1061 {
1062         struct wlsc_vector v = { { x, y, 0, 1 } };
1063
1064         wlsc_matrix_transform(&surface->matrix_inv, &v);
1065         *sx = v.f[0] * surface->width;
1066         *sy = v.f[1] * surface->height;
1067 }
1068
1069 struct wlsc_surface *
1070 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1071 {
1072         struct wlsc_compositor *ec =
1073                 (struct wlsc_compositor *) device->compositor;
1074         struct wlsc_surface *es;
1075
1076         wl_list_for_each(es, &ec->surface_list, link) {
1077                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1078                 if (0 <= *sx && *sx < es->width &&
1079                     0 <= *sy && *sy < es->height)
1080                         return es;
1081         }
1082
1083         return NULL;
1084 }
1085
1086
1087 static void
1088 motion_grab_motion(struct wl_grab *grab,
1089                    uint32_t time, int32_t x, int32_t y)
1090 {
1091         struct wlsc_input_device *device =
1092                 (struct wlsc_input_device *) grab->input_device;
1093         struct wlsc_surface *es =
1094                 (struct wlsc_surface *) device->input_device.pointer_focus;
1095         int32_t sx, sy;
1096
1097         wlsc_surface_transform(es, x, y, &sx, &sy);
1098         wl_client_post_event(es->surface.client,
1099                              &device->input_device.object,
1100                              WL_INPUT_DEVICE_MOTION,
1101                              time, x, y, sx, sy);
1102 }
1103
1104 static void
1105 motion_grab_button(struct wl_grab *grab,
1106                    uint32_t time, int32_t button, int32_t state)
1107 {
1108         wl_client_post_event(grab->input_device->pointer_focus->client,
1109                              &grab->input_device->object,
1110                              WL_INPUT_DEVICE_BUTTON,
1111                              time, button, state);
1112 }
1113
1114 static void
1115 motion_grab_end(struct wl_grab *grab, uint32_t time)
1116 {
1117 }
1118
1119 static const struct wl_grab_interface motion_grab_interface = {
1120         motion_grab_motion,
1121         motion_grab_button,
1122         motion_grab_end
1123 };
1124
1125 WL_EXPORT void
1126 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1127 {
1128         if (compositor->idle_inhibit)
1129                 return;
1130
1131         wlsc_compositor_fade(compositor, 0.0);
1132         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1133
1134         wl_event_source_timer_update(compositor->idle_source,
1135                                      option_idle_time * 1000);
1136 }
1137
1138 static void
1139 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1140 {
1141         wlsc_compositor_wake(compositor);
1142         compositor->idle_inhibit++;
1143 }
1144
1145 static void
1146 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1147 {
1148         compositor->idle_inhibit--;
1149         wlsc_compositor_wake(compositor);
1150 }
1151
1152 static int
1153 idle_handler(void *data)
1154 {
1155         struct wlsc_compositor *compositor = data;
1156
1157         if (compositor->idle_inhibit)
1158                 return 1;
1159
1160         wlsc_compositor_fade(compositor, 1.0);
1161
1162         return 1;
1163 }
1164
1165 void
1166 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1167 {
1168         struct wlsc_surface *es;
1169         struct wlsc_compositor *ec =
1170                 (struct wlsc_compositor *) device->compositor;
1171         struct wlsc_output *output;
1172         const struct wl_grab_interface *interface;
1173         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1174         int32_t sx, sy;
1175         int x_valid = 0, y_valid = 0;
1176         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1177
1178         wlsc_compositor_wake(ec);
1179
1180         wl_list_for_each(output, &ec->output_list, link) {
1181                 if (output->x <= x && x <= output->x + output->width)
1182                         x_valid = 1;
1183
1184                 if (output->y <= y && y <= output->y + output->height)
1185                         y_valid = 1;
1186
1187                 /* FIXME: calculate this only on output addition/deletion */
1188                 if (output->x < min_x)
1189                         min_x = output->x;
1190                 if (output->y < min_y)
1191                         min_y = output->y;
1192
1193                 if (output->x + output->width > max_x)
1194                         max_x = output->x + output->width;
1195                 if (output->y + output->height > max_y)
1196                         max_y = output->y + output->height;
1197         }
1198
1199         if (!x_valid) {
1200                 if (x < min_x)
1201                         x = min_x;
1202                 else if (x >= max_x)
1203                         x = max_x;
1204         }
1205         if (!y_valid) {
1206                 if (y < min_y)
1207                         y = min_y;
1208                 else  if (y >= max_y)
1209                         y = max_y;
1210         }
1211
1212         device->x = x;
1213         device->y = y;
1214
1215         if (device->grab) {
1216                 interface = device->grab->interface;
1217                 interface->motion(device->grab, time, x, y);
1218         } else {
1219                 es = pick_surface(device, &sx, &sy);
1220                 wl_input_device_set_pointer_focus(device,
1221                                                   &es->surface,
1222                                                   time, x, y, sx, sy);
1223                 if (es)
1224                         wl_client_post_event(es->surface.client,
1225                                              &device->object,
1226                                              WL_INPUT_DEVICE_MOTION,
1227                                              time, x, y, sx, sy);
1228         }
1229
1230         wlsc_surface_damage(wd->sprite);
1231
1232         wd->sprite->x = device->x - wd->hotspot_x;
1233         wd->sprite->y = device->y - wd->hotspot_y;
1234         wlsc_surface_update_matrix(wd->sprite);
1235
1236         wlsc_surface_damage(wd->sprite);
1237 }
1238
1239 WL_EXPORT void
1240 wlsc_surface_activate(struct wlsc_surface *surface,
1241                       struct wlsc_input_device *device, uint32_t time)
1242 {
1243         wlsc_surface_raise(surface);
1244         if (device->selection)
1245                 wlsc_selection_set_focus(device->selection,
1246                                          &surface->surface, time);
1247
1248         wl_input_device_set_keyboard_focus(&device->input_device,
1249                                            &surface->surface,
1250                                            time);
1251 }
1252
1253 struct wlsc_binding {
1254         uint32_t key;
1255         uint32_t button;
1256         uint32_t modifier;
1257         wlsc_binding_handler_t handler;
1258         void *data;
1259         struct wl_list link;
1260 };
1261
1262 void
1263 notify_button(struct wl_input_device *device,
1264               uint32_t time, int32_t button, int32_t state)
1265 {
1266         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1267         struct wlsc_compositor *compositor =
1268                 (struct wlsc_compositor *) device->compositor;
1269         struct wlsc_binding *b;
1270         struct wlsc_surface *surface =
1271                 (struct wlsc_surface *) device->pointer_focus;
1272
1273         if (state)
1274                 wlsc_compositor_idle_inhibit(compositor);
1275         else
1276                 wlsc_compositor_idle_release(compositor);
1277
1278         if (state && surface && device->grab == NULL) {
1279                 wlsc_surface_activate(surface, wd, time);
1280                 wl_input_device_start_grab(device,
1281                                            &device->motion_grab,
1282                                            button, time);
1283         }
1284
1285         wl_list_for_each(b, &compositor->binding_list, link) {
1286                 if (b->button == button &&
1287                     b->modifier == wd->modifier_state && state) {
1288                         b->handler(&wd->input_device,
1289                                    time, 0, button, state, b->data);
1290                         break;
1291                 }
1292         }
1293
1294         if (device->grab)
1295                 device->grab->interface->button(device->grab, time,
1296                                                 button, state);
1297
1298         if (!state && device->grab && device->grab_button == button)
1299                 wl_input_device_end_grab(device, time);
1300 }
1301
1302 static void
1303 terminate_binding(struct wl_input_device *device, uint32_t time,
1304                   uint32_t key, uint32_t button, uint32_t state, void *data)
1305 {
1306         struct wlsc_compositor *compositor = data;
1307
1308         if (state)
1309                 wl_display_terminate(compositor->wl_display);
1310 }
1311
1312 WL_EXPORT struct wlsc_binding *
1313 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1314                             uint32_t key, uint32_t button, uint32_t modifier,
1315                             wlsc_binding_handler_t handler, void *data)
1316 {
1317         struct wlsc_binding *binding;
1318
1319         binding = malloc(sizeof *binding);
1320         if (binding == NULL)
1321                 return NULL;
1322
1323         binding->key = key;
1324         binding->button = button;
1325         binding->modifier = modifier;
1326         binding->handler = handler;
1327         binding->data = data;
1328         wl_list_insert(compositor->binding_list.prev, &binding->link);
1329
1330         return binding;
1331 }
1332
1333 WL_EXPORT void
1334 wlsc_binding_destroy(struct wlsc_binding *binding)
1335 {
1336         wl_list_remove(&binding->link);
1337         free(binding);
1338 }
1339
1340 static void
1341 update_modifier_state(struct wlsc_input_device *device,
1342                       uint32_t key, uint32_t state)
1343 {
1344         uint32_t modifier;
1345
1346         switch (key) {
1347         case KEY_LEFTCTRL:
1348         case KEY_RIGHTCTRL:
1349                 modifier = MODIFIER_CTRL;
1350                 break;
1351
1352         case KEY_LEFTALT:
1353         case KEY_RIGHTALT:
1354                 modifier = MODIFIER_ALT;
1355                 break;
1356
1357         case KEY_LEFTMETA:
1358         case KEY_RIGHTMETA:
1359                 modifier = MODIFIER_SUPER;
1360                 break;
1361
1362         default:
1363                 modifier = 0;
1364                 break;
1365         }
1366
1367         if (state)
1368                 device->modifier_state |= modifier;
1369         else
1370                 device->modifier_state &= ~modifier;
1371 }
1372
1373 void
1374 notify_key(struct wl_input_device *device,
1375            uint32_t time, uint32_t key, uint32_t state)
1376 {
1377         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1378         struct wlsc_compositor *compositor =
1379                 (struct wlsc_compositor *) device->compositor;
1380         uint32_t *k, *end;
1381         struct wlsc_binding *b;
1382
1383         if (state)
1384                 wlsc_compositor_idle_inhibit(compositor);
1385         else
1386                 wlsc_compositor_idle_release(compositor);
1387
1388         wl_list_for_each(b, &compositor->binding_list, link) {
1389                 if (b->key == key &&
1390                     b->modifier == wd->modifier_state) {
1391                         b->handler(&wd->input_device,
1392                                    time, key, 0, state, b->data);
1393                         break;
1394                 }
1395         }
1396
1397         update_modifier_state(wd, key, state);
1398         end = device->keys.data + device->keys.size;
1399         for (k = device->keys.data; k < end; k++) {
1400                 if (*k == key)
1401                         *k = *--end;
1402         }
1403         device->keys.size = (void *) end - device->keys.data;
1404         if (state) {
1405                 k = wl_array_add(&device->keys, sizeof *k);
1406                 *k = key;
1407         }
1408
1409         if (device->keyboard_focus != NULL)
1410                 wl_client_post_event(device->keyboard_focus->client,
1411                                      &device->object,
1412                                      WL_INPUT_DEVICE_KEY, time, key, state);
1413 }
1414
1415 void
1416 notify_pointer_focus(struct wl_input_device *device,
1417                      uint32_t time, struct wlsc_output *output,
1418                      int32_t x, int32_t y)
1419 {
1420         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1421         struct wlsc_compositor *compositor =
1422                 (struct wlsc_compositor *) device->compositor;
1423         struct wlsc_surface *es;
1424         int32_t sx, sy;
1425
1426         if (output) {
1427                 device->x = x;
1428                 device->y = y;
1429                 es = pick_surface(device, &sx, &sy);
1430                 wl_input_device_set_pointer_focus(device,
1431                                                   &es->surface,
1432                                                   time, x, y, sx, sy);
1433
1434                 compositor->focus = 1;
1435
1436                 wd->sprite->x = device->x - wd->hotspot_x;
1437                 wd->sprite->y = device->y - wd->hotspot_y;
1438                 wlsc_surface_update_matrix(wd->sprite);
1439         } else {
1440                 wl_input_device_set_pointer_focus(device, NULL,
1441                                                   time, 0, 0, 0, 0);
1442                 compositor->focus = 0;
1443         }
1444
1445         wlsc_surface_damage(wd->sprite);
1446 }
1447
1448 void
1449 notify_keyboard_focus(struct wl_input_device *device,
1450                       uint32_t time, struct wlsc_output *output,
1451                       struct wl_array *keys)
1452 {
1453         struct wlsc_input_device *wd =
1454                 (struct wlsc_input_device *) device;
1455         struct wlsc_compositor *compositor =
1456                 (struct wlsc_compositor *) device->compositor;
1457         struct wlsc_surface *es;
1458         uint32_t *k, *end;
1459
1460         if (!wl_list_empty(&compositor->surface_list))
1461                 es = container_of(compositor->surface_list.next,
1462                                   struct wlsc_surface, link);
1463         else
1464                 es = NULL;
1465
1466         if (output) {
1467                 wl_array_copy(&wd->input_device.keys, keys);
1468                 wd->modifier_state = 0;
1469                 end = device->keys.data + device->keys.size;
1470                 for (k = device->keys.data; k < end; k++) {
1471                         wlsc_compositor_idle_inhibit(compositor);
1472                         update_modifier_state(wd, *k, 1);
1473                 }
1474
1475                 wl_input_device_set_keyboard_focus(&wd->input_device,
1476                                                    &es->surface, time);
1477         } else {
1478                 end = device->keys.data + device->keys.size;
1479                 for (k = device->keys.data; k < end; k++)
1480                         wlsc_compositor_idle_release(compositor);
1481
1482                 wd->modifier_state = 0;
1483                 wl_input_device_set_keyboard_focus(&wd->input_device,
1484                                                    NULL, time);
1485         }
1486 }
1487
1488
1489 static void
1490 input_device_attach(struct wl_client *client,
1491                     struct wl_input_device *device_base,
1492                     uint32_t time,
1493                     struct wl_buffer *buffer, int32_t x, int32_t y)
1494 {
1495         struct wlsc_input_device *device =
1496                 (struct wlsc_input_device *) device_base;
1497
1498         if (time < device->input_device.pointer_focus_time)
1499                 return;
1500         if (device->input_device.pointer_focus == NULL)
1501                 return;
1502         if (device->input_device.pointer_focus->client != client)
1503                 return;
1504
1505         if (buffer == NULL) {
1506                 wlsc_input_device_set_pointer_image(device,
1507                                                     WLSC_POINTER_LEFT_PTR);
1508                 return;
1509         }
1510
1511         wlsc_input_device_attach_buffer(device, buffer, x, y);
1512 }
1513
1514 const static struct wl_input_device_interface input_device_interface = {
1515         input_device_attach,
1516 };
1517
1518 void
1519 wlsc_input_device_init(struct wlsc_input_device *device,
1520                        struct wlsc_compositor *ec)
1521 {
1522         wl_input_device_init(&device->input_device, &ec->compositor);
1523
1524         device->input_device.object.interface = &wl_input_device_interface;
1525         device->input_device.object.implementation =
1526                 (void (**)(void)) &input_device_interface;
1527         wl_display_add_object(ec->wl_display, &device->input_device.object);
1528         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1529
1530         device->sprite = wlsc_surface_create(ec,
1531                                              device->input_device.x,
1532                                              device->input_device.y, 32, 32);
1533         device->hotspot_x = 16;
1534         device->hotspot_y = 16;
1535         device->modifier_state = 0;
1536
1537         device->input_device.motion_grab.interface = &motion_grab_interface;
1538
1539         wl_list_insert(ec->input_device_list.prev, &device->link);
1540
1541         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1542 }
1543
1544 static void
1545 wlsc_output_post_geometry(struct wl_client *client,
1546                           struct wl_object *global, uint32_t version)
1547 {
1548         struct wlsc_output *output =
1549                 container_of(global, struct wlsc_output, object);
1550
1551         wl_client_post_event(client, global,
1552                              WL_OUTPUT_GEOMETRY,
1553                              output->x, output->y,
1554                              output->width, output->height);
1555 }
1556
1557 static const char vertex_shader[] =
1558         "uniform mat4 proj;\n"
1559         "attribute vec2 position;\n"
1560         "attribute vec2 texcoord;\n"
1561         "varying vec2 v_texcoord;\n"
1562         "void main()\n"
1563         "{\n"
1564         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1565         "   v_texcoord = texcoord;\n"
1566         "}\n";
1567
1568 static const char texture_fragment_shader[] =
1569         "precision mediump float;\n"
1570         "varying vec2 v_texcoord;\n"
1571         "uniform sampler2D tex;\n"
1572         "void main()\n"
1573         "{\n"
1574         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1575         "}\n";
1576
1577 static const char solid_fragment_shader[] =
1578         "precision mediump float;\n"
1579         "varying vec2 v_texcoord;\n"
1580         "uniform vec4 color;\n"
1581         "void main()\n"
1582         "{\n"
1583         "   gl_FragColor = color\n;"
1584         "}\n";
1585
1586 static int
1587 compile_shader(GLenum type, const char *source)
1588 {
1589         GLuint s;
1590         char msg[512];
1591         GLint status;
1592
1593         s = glCreateShader(type);
1594         glShaderSource(s, 1, &source, NULL);
1595         glCompileShader(s);
1596         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1597         if (!status) {
1598                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1599                 fprintf(stderr, "shader info: %s\n", msg);
1600                 return GL_NONE;
1601         }
1602
1603         return s;
1604 }
1605
1606 static int
1607 wlsc_shader_init(struct wlsc_shader *shader,
1608                  const char *vertex_source, const char *fragment_source)
1609 {
1610         char msg[512];
1611         GLint status;
1612
1613         shader->vertex_shader =
1614                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1615         shader->fragment_shader =
1616                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1617
1618         shader->program = glCreateProgram();
1619         glAttachShader(shader->program, shader->vertex_shader);
1620         glAttachShader(shader->program, shader->fragment_shader);
1621         glBindAttribLocation(shader->program, 0, "position");
1622         glBindAttribLocation(shader->program, 1, "texcoord");
1623
1624         glLinkProgram(shader->program);
1625         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1626         if (!status) {
1627                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1628                 fprintf(stderr, "link info: %s\n", msg);
1629                 return -1;
1630         }
1631
1632         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1633         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1634
1635         return 0;
1636 }
1637
1638 static int
1639 init_solid_shader(struct wlsc_shader *shader,
1640                   GLuint vertex_shader, const char *fragment_source)
1641 {
1642         GLint status;
1643         char msg[512];
1644
1645         shader->vertex_shader = vertex_shader;
1646         shader->fragment_shader =
1647                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1648
1649         shader->program = glCreateProgram();
1650         glAttachShader(shader->program, shader->vertex_shader);
1651         glAttachShader(shader->program, shader->fragment_shader);
1652         glBindAttribLocation(shader->program, 0, "position");
1653         glBindAttribLocation(shader->program, 1, "texcoord");
1654
1655         glLinkProgram(shader->program);
1656         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1657         if (!status) {
1658                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1659                 fprintf(stderr, "link info: %s\n", msg);
1660                 return -1;
1661         }
1662
1663         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1664         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1665
1666         return 0;
1667 }
1668
1669 void
1670 wlsc_output_destroy(struct wlsc_output *output)
1671 {
1672         destroy_surface(&output->background->surface.resource, NULL);
1673 }
1674
1675 void
1676 wlsc_output_move(struct wlsc_output *output, int x, int y)
1677 {
1678         struct wlsc_compositor *c = output->compositor;
1679         int flip;
1680
1681         output->x = x;
1682         output->y = y;
1683
1684         if (output->background) {
1685                 output->background->x = x;
1686                 output->background->y = y;
1687                 wlsc_surface_update_matrix(output->background);
1688         }
1689
1690         pixman_region32_init(&output->previous_damage_region);
1691
1692         wlsc_matrix_init(&output->matrix);
1693         wlsc_matrix_translate(&output->matrix,
1694                               -output->x - output->width / 2.0,
1695                               -output->y - output->height / 2.0, 0);
1696
1697         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1698         wlsc_matrix_scale(&output->matrix,
1699                           2.0 / output->width,
1700                           flip * 2.0 / output->height, 1);
1701
1702         pixman_region32_union_rect(&c->damage_region,
1703                                    &c->damage_region,
1704                                    x, y, output->width, output->height);
1705 }
1706
1707 void
1708 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1709                  int x, int y, int width, int height, uint32_t flags)
1710 {
1711         output->compositor = c;
1712         output->x = x;
1713         output->y = y;
1714         output->width = width;
1715         output->height = height;
1716
1717         output->background =
1718                 background_create(output, option_background);
1719
1720         output->flags = flags;
1721         output->finished = 1;
1722         wlsc_output_move(output, x, y);
1723
1724         output->object.interface = &wl_output_interface;
1725         wl_display_add_object(c->wl_display, &output->object);
1726         wl_display_add_global(c->wl_display, &output->object,
1727                               wlsc_output_post_geometry);
1728 }
1729
1730 static void
1731 shm_buffer_created(struct wl_buffer *buffer)
1732 {
1733         struct wl_list *surfaces_attached_to;
1734
1735         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1736         if (!surfaces_attached_to) {
1737                 buffer->user_data = NULL;
1738                 return;
1739         }
1740
1741         wl_list_init(surfaces_attached_to);
1742
1743         buffer->user_data = surfaces_attached_to;
1744 }
1745
1746 static void
1747 shm_buffer_damaged(struct wl_buffer *buffer,
1748                    int32_t x, int32_t y, int32_t width, int32_t height)
1749 {
1750         struct wl_list *surfaces_attached_to = buffer->user_data;
1751         struct wlsc_surface *es;
1752         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1753
1754         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1755                 glBindTexture(GL_TEXTURE_2D, es->texture);
1756                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1757                              tex_width, buffer->height, 0,
1758                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1759                              wl_shm_buffer_get_data(buffer));
1760                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1761                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1762         }
1763 }
1764
1765 static void
1766 shm_buffer_destroyed(struct wl_buffer *buffer)
1767 {
1768         struct wl_list *surfaces_attached_to = buffer->user_data;
1769         struct wlsc_surface *es, *next;
1770
1771         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1772                 wl_list_remove(&es->buffer_link);
1773                 wl_list_init(&es->buffer_link);
1774         }
1775
1776         free(surfaces_attached_to);
1777 }
1778
1779 const static struct wl_shm_callbacks shm_callbacks = {
1780         shm_buffer_created,
1781         shm_buffer_damaged,
1782         shm_buffer_destroyed
1783 };
1784
1785 int
1786 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1787 {
1788         struct wl_event_loop *loop;
1789         const char *extensions;
1790
1791         ec->wl_display = display;
1792
1793         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1794
1795         ec->shm = wl_shm_init(display, &shm_callbacks);
1796
1797         ec->image_target_texture_2d =
1798                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1799         ec->image_target_renderbuffer_storage = (void *)
1800                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1801         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1802         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1803         ec->bind_display =
1804                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1805         ec->unbind_display =
1806                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1807
1808         extensions = (const char *) glGetString(GL_EXTENSIONS);
1809         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1810                 fprintf(stderr,
1811                         "GL_EXT_texture_format_BGRA8888 not available\n");
1812                 return -1;
1813         }
1814
1815         extensions =
1816                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1817         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1818                 ec->has_bind_display = 1;
1819         if (ec->has_bind_display)
1820                 ec->bind_display(ec->display, ec->wl_display);
1821
1822         wl_list_init(&ec->surface_list);
1823         wl_list_init(&ec->input_device_list);
1824         wl_list_init(&ec->output_list);
1825         wl_list_init(&ec->binding_list);
1826         wl_list_init(&ec->animation_list);
1827         wlsc_tweener_init(&ec->fade.tweener, 0.8, 0.0, 0.0);
1828         ec->fade.animation.frame = fade_frame;
1829         wl_list_init(&ec->fade.animation.link);
1830
1831         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1832                                     MODIFIER_CTRL | MODIFIER_ALT,
1833                                     terminate_binding, ec);
1834
1835         create_pointer_images(ec);
1836
1837         screenshooter_create(ec);
1838
1839         glActiveTexture(GL_TEXTURE0);
1840
1841         if (wlsc_shader_init(&ec->texture_shader,
1842                              vertex_shader, texture_fragment_shader) < 0)
1843                 return -1;
1844         if (init_solid_shader(&ec->solid_shader,
1845                               ec->texture_shader.vertex_shader,
1846                               solid_fragment_shader) < 0)
1847                 return -1;
1848
1849         loop = wl_display_get_event_loop(ec->wl_display);
1850         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1851         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1852
1853         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1854         pixman_region32_init(&ec->damage_region);
1855         wlsc_compositor_schedule_repaint(ec);
1856
1857         return 0;
1858 }
1859
1860 static int on_term_signal(int signal_number, void *data)
1861 {
1862         struct wlsc_compositor *ec = data;
1863
1864         wl_display_terminate(ec->wl_display);
1865
1866         return 1;
1867 }
1868
1869 int main(int argc, char *argv[])
1870 {
1871         struct wl_display *display;
1872         struct wlsc_compositor *ec;
1873         struct wl_event_loop *loop;
1874         int width, height, o;
1875         void *shell_module;
1876         int (*shell_init)(struct wlsc_compositor *ec);
1877         char *p;
1878
1879         static const char opts[] = "b:c:g:S:i:s:";
1880         static const struct option longopts[ ] = {
1881                 { "background", 1, NULL, 'b' },
1882                 { "connector", 1, NULL, 'c' },
1883                 { "geometry", 1, NULL, 'g' },
1884                 { "socket", 1, NULL, 'S' },
1885                 { "idle-time", 1, NULL, 'i' },
1886                 { "shell", 1, NULL, 's' },
1887                 { NULL, }
1888         };
1889
1890         width = 1024;
1891         height = 640;
1892
1893         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1894                 switch (o) {
1895                 case 'b':
1896                         option_background = optarg;
1897                         break;
1898                 case 'c':
1899                         option_connector = strtol(optarg, &p, 0);
1900                         if (*p != '\0') {
1901                                 fprintf(stderr,
1902                                         "invalid connection option: %s\n",
1903                                         optarg);
1904                                 exit(EXIT_FAILURE);
1905                         }
1906                         break;
1907                 case 'g':
1908                         if (sscanf(optarg, "%dx%d", &width, &height) != 2) {
1909                                 fprintf(stderr,
1910                                         "invalid geometry option: %s\n",
1911                                         optarg);
1912                                 exit(EXIT_FAILURE);
1913                         }
1914                         break;
1915                 case 'S':
1916                         option_socket_name = optarg;
1917                         break;
1918                 case 'i':
1919                         option_idle_time = strtol(optarg, &p, 0);
1920                         if (*p != '\0') {
1921                                 fprintf(stderr,
1922                                         "invalid idle time option: %s\n",
1923                                         optarg);
1924                                 exit(EXIT_FAILURE);
1925                         }
1926                         break;
1927                 case 's':
1928                         option_shell = optarg;
1929                         break;
1930                 }
1931         }
1932
1933         display = wl_display_create();
1934
1935         ec = NULL;
1936
1937         shell_init = desktop_shell_init;
1938         if (option_shell) {
1939                 shell_module = dlopen(option_shell, RTLD_LAZY);
1940                 if (!shell_module) {
1941                         fprintf(stderr, "failed to load shell module: %m\n");
1942                         exit(EXIT_FAILURE);
1943                 }
1944                 shell_init = dlsym(shell_module, "shell_init");
1945                 if (!shell_init) {
1946                         fprintf(stderr,
1947                                 "failed to lookup shell init function: %m\n");
1948                         exit(EXIT_FAILURE);
1949                 }
1950         }
1951
1952 #if BUILD_WAYLAND_COMPOSITOR
1953         if (getenv("WAYLAND_DISPLAY"))
1954                 ec = wayland_compositor_create(display, width, height);
1955 #endif
1956
1957 #if BUILD_X11_COMPOSITOR
1958         if (ec == NULL && getenv("DISPLAY"))
1959                 ec = x11_compositor_create(display, width, height);
1960 #endif
1961
1962 #if BUILD_OPENWFD_COMPOSITOR
1963         if (ec == NULL && getenv("OPENWFD"))
1964                 ec = wfd_compositor_create(display, option_connector);
1965 #endif
1966
1967 #if BUILD_DRM_COMPOSITOR
1968         if (ec == NULL)
1969                 ec = drm_compositor_create(display, option_connector);
1970 #endif
1971
1972         if (ec == NULL) {
1973                 fprintf(stderr, "failed to create compositor\n");
1974                 exit(EXIT_FAILURE);
1975         }
1976
1977         if (shell_init(ec) < 0)
1978                 exit(EXIT_FAILURE);
1979
1980         if (wl_display_add_socket(display, option_socket_name)) {
1981                 fprintf(stderr, "failed to add socket: %m\n");
1982                 exit(EXIT_FAILURE);
1983         }
1984
1985         loop = wl_display_get_event_loop(ec->wl_display);
1986         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
1987         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
1988
1989         wl_display_run(display);
1990
1991         if (ec->has_bind_display)
1992                 ec->unbind_display(ec->display, display);
1993         wl_display_destroy(display);
1994
1995         ec->destroy(ec);
1996
1997         return 0;
1998 }