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 int option_idle_time = 300;
  47
  48 WL_EXPORT void
  49 wlsc_matrix_init(struct wlsc_matrix *matrix)
  50 {
  51         static const struct wlsc_matrix identity = {
  52                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  53         };
  54
  55         memcpy(matrix, &identity, sizeof identity);
  56 }
  57
  58 static void
  59 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  60 {
  61         struct wlsc_matrix tmp;
  62         const GLfloat *row, *column;
  63         div_t d;
  64         int i, j;
  65
  66         for (i = 0; i < 16; i++) {
  67                 tmp.d[i] = 0;
  68                 d = div(i, 4);
  69                 row = m->d + d.quot * 4;
  70                 column = n->d + d.rem;
  71                 for (j = 0; j < 4; j++)
  72                         tmp.d[i] += row[j] * column[j * 4];
  73         }
  74         memcpy(m, &tmp, sizeof tmp);
  75 }
  76
  77 WL_EXPORT void
  78 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  79 {
  80         struct wlsc_matrix translate = {
  81                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  82         };
  83
  84         wlsc_matrix_multiply(matrix, &translate);
  85 }
  86
  87 WL_EXPORT void
  88 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  89 {
  90         struct wlsc_matrix scale = {
  91                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
  92         };
  93
  94         wlsc_matrix_multiply(matrix, &scale);
  95 }
  96
  97 static void
  98 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
  99 {
 100         int i, j;
 101         struct wlsc_vector t;
 102
 103         for (i = 0; i < 4; i++) {
 104                 t.f[i] = 0;
 105                 for (j = 0; j < 4; j++)
 106                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 107         }
 108
 109         *v = t;
 110 }
 111
 112 WL_EXPORT void
 113 wlsc_spring_init(struct wlsc_spring *spring,
 114                  double k, double current, double target)
 115 {
 116         spring->k = k;
 117         spring->friction = 100.0;
 118         spring->current = current;
 119         spring->previous = current;
 120         spring->target = target;
 121 }
 122
 123 WL_EXPORT void
 124 wlsc_spring_update(struct wlsc_spring *spring, uint32_t msec)
 125 {
 126         double force, v, current, step;
 127
 128         step = (msec - spring->timestamp) / 300.0;
 129         spring->timestamp = msec;
 130
 131         current = spring->current;
 132         v = current - spring->previous;
 133         force = spring->k * (spring->target - current) / 10.0 +
 134                 (spring->previous - current) - v * spring->friction;
 135
 136         spring->current =
 137                 current + (current - spring->previous) + force * step * step;
 138         spring->previous = current;
 139
 140 #if 0
 141         if (spring->current >= 1.0) {
 142 #ifdef TWEENER_BOUNCE
 143                 spring->current = 2.0 - spring->current;
 144                 spring->previous = 2.0 - spring->previous;
 145 #else
 146                 spring->current = 1.0;
 147                 spring->previous = 1.0;
 148 #endif
 149         }
 150
 151         if (spring->current <= 0.0) {
 152                 spring->current = 0.0;
 153                 spring->previous = 0.0;
 154         }
 155 #endif
 156 }
 157
 158 WL_EXPORT int
 159 wlsc_spring_done(struct wlsc_spring *spring)
 160 {
 161         return fabs(spring->previous - spring->target) < 0.0002 &&
 162                 fabs(spring->current - spring->target) < 0.0002;
 163 }
 164
 165 static void
 166 surface_handle_buffer_destroy(struct wl_listener *listener,
 167                               struct wl_resource *resource, uint32_t time)
 168 {
 169         struct wlsc_surface *es = container_of(listener, struct wlsc_surface,
 170                                                buffer_destroy_listener);
 171         struct wl_buffer *buffer = (struct wl_buffer *) resource;
 172
 173         if (es->buffer == buffer)
 174                 es->buffer = NULL;
 175 }
 176
 177 static void
 178 output_handle_scanout_buffer_destroy(struct wl_listener *listener,
 179                                      struct wl_resource *resource,
 180                                      uint32_t time)
 181 {
 182         struct wlsc_output *output =
 183                 container_of(listener, struct wlsc_output,
 184                              scanout_buffer_destroy_listener);
 185         struct wl_buffer *buffer = (struct wl_buffer *) resource;
 186
 187         if (output->scanout_buffer == buffer)
 188                 output->scanout_buffer = NULL;
 189 }
 190
 191 WL_EXPORT struct wlsc_surface *
 192 wlsc_surface_create(struct wlsc_compositor *compositor,
 193                     int32_t x, int32_t y, int32_t width, int32_t height)
 194 {
 195         struct wlsc_surface *surface;
 196
 197         surface = malloc(sizeof *surface);
 198         if (surface == NULL)
 199                 return NULL;
 200
 201         wl_list_init(&surface->link);
 202         wl_list_init(&surface->buffer_link);
 203         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 204
 205         glGenTextures(1, &surface->texture);
 206         glBindTexture(GL_TEXTURE_2D, surface->texture);
 207         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 208         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 209
 210         surface->compositor = compositor;
 211         surface->visual = NULL;
 212         surface->image = EGL_NO_IMAGE_KHR;
 213         surface->saved_texture = 0;
 214         surface->x = x;
 215         surface->y = y;
 216         surface->width = width;
 217         surface->height = height;
 218
 219         surface->buffer = NULL;
 220
 221         surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
 222         wl_list_init(&surface->buffer_destroy_listener.link);
 223
 224         surface->transform = NULL;
 225
 226         return surface;
 227 }
 228
 229 WL_EXPORT void
 230 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 231                               int32_t x, int32_t y,
 232                               int32_t width, int32_t height)
 233 {
 234         struct wlsc_compositor *compositor = surface->compositor;
 235
 236         pixman_region32_union_rect(&compositor->damage_region,
 237                                    &compositor->damage_region,
 238                                    surface->x + x, surface->y + y,
 239                                    width, height);
 240         wlsc_compositor_schedule_repaint(compositor);
 241 }
 242
 243 WL_EXPORT void
 244 wlsc_surface_damage(struct wlsc_surface *surface)
 245 {
 246         wlsc_surface_damage_rectangle(surface, 0, 0,
 247                                       surface->width, surface->height);
 248 }
 249
 250 WL_EXPORT uint32_t
 251 wlsc_compositor_get_time(void)
 252 {
 253         struct timeval tv;
 254
 255         gettimeofday(&tv, NULL);
 256
 257         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 258 }
 259
 260 static void
 261 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 262 {
 263         struct wlsc_surface *surface =
 264                 container_of(resource, struct wlsc_surface, surface.resource);
 265         struct wlsc_compositor *compositor = surface->compositor;
 266
 267         wlsc_surface_damage(surface);
 268
 269         wl_list_remove(&surface->link);
 270         if (surface->saved_texture == 0)
 271                 glDeleteTextures(1, &surface->texture);
 272         else
 273                 glDeleteTextures(1, &surface->saved_texture);
 274
 275         if (surface->buffer)
 276                 wl_list_remove(&surface->buffer_destroy_listener.link);
 277
 278         if (surface->image != EGL_NO_IMAGE_KHR)
 279                 compositor->destroy_image(compositor->display,
 280                                           surface->image);
 281
 282         wl_list_remove(&surface->buffer_link);
 283
 284         free(surface);
 285 }
 286
 287 static void
 288 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 289 {
 290         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 291         struct wlsc_compositor *ec = es->compositor;
 292         struct wl_list *surfaces_attached_to;
 293
 294         if (es->saved_texture != 0)
 295                 es->texture = es->saved_texture;
 296
 297         glBindTexture(GL_TEXTURE_2D, es->texture);
 298
 299         if (wl_buffer_is_shm(buffer)) {
 300                 /* Unbind any EGLImage texture that may be bound, so we don't
 301                  * overwrite it.*/
 302                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 303                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 304                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 305                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 306                              es->pitch, buffer->height, 0,
 307                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 308                              wl_shm_buffer_get_data(buffer));
 309                 es->visual = buffer->visual;
 310
 311                 surfaces_attached_to = buffer->user_data;
 312
 313                 wl_list_remove(&es->buffer_link);
 314                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 315         } else {
 316                 if (es->image != EGL_NO_IMAGE_KHR)
 317                         ec->destroy_image(ec->display, es->image);
 318                 es->image = ec->create_image(ec->display, NULL,
 319                                              EGL_WAYLAND_BUFFER_WL,
 320                                              buffer, NULL);
 321
 322                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 323                 es->visual = buffer->visual;
 324                 es->pitch = es->width;
 325         }
 326 }
 327
 328 static void
 329 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 330 {
 331         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 332         struct wlsc_compositor *ec = es->compositor;
 333
 334         es->pitch = es->width;
 335         es->image = sprite->image;
 336         if (sprite->image != EGL_NO_IMAGE_KHR) {
 337                 glBindTexture(GL_TEXTURE_2D, es->texture);
 338                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 339         } else {
 340                 if (es->saved_texture == 0)
 341                         es->saved_texture = es->texture;
 342                 es->texture = sprite->texture;
 343         }
 344
 345         es->visual = sprite->visual;
 346
 347         if (es->buffer)
 348                 es->buffer = NULL;
 349 }
 350
 351 enum sprite_usage {
 352         SPRITE_USE_CURSOR = (1 << 0),
 353 };
 354
 355 static struct wlsc_sprite *
 356 create_sprite_from_png(struct wlsc_compositor *ec,
 357                        const char *filename, uint32_t usage)
 358 {
 359         uint32_t *pixels;
 360         struct wlsc_sprite *sprite;
 361         int32_t width, height;
 362         uint32_t stride;
 363
 364         pixels = wlsc_load_image(filename, &width, &height, &stride);
 365         if (pixels == NULL)
 366                 return NULL;
 367
 368         sprite = malloc(sizeof *sprite);
 369         if (sprite == NULL) {
 370                 free(pixels);
 371                 return NULL;
 372         }
 373
 374         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 375         sprite->width = width;
 376         sprite->height = height;
 377         sprite->image = EGL_NO_IMAGE_KHR;
 378
 379         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 380                 sprite->image = ec->create_cursor_image(ec, width, height);
 381
 382         glGenTextures(1, &sprite->texture);
 383         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 384         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 385         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 386         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 387         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 388
 389         if (sprite->image != EGL_NO_IMAGE_KHR) {
 390                 ec->image_target_texture_2d(GL_TEXTURE_2D, sprite->image);
 391                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 392                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 393         } else {
 394                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 395                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 396         }
 397
 398         free(pixels);
 399
 400         return sprite;
 401 }
 402
 403 static const struct {
 404         const char *filename;
 405         int hotspot_x, hotspot_y;
 406 } pointer_images[] = {
 407         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 408         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 409         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 410         { DATADIR "/wayland/grabbing.png",              20, 17 },
 411         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 412         { DATADIR "/wayland/left_side.png",             10, 20 },
 413         { DATADIR "/wayland/right_side.png",            30, 19 },
 414         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 415         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 416         { DATADIR "/wayland/top_side.png",              18,  8 },
 417         { DATADIR "/wayland/xterm.png",                 15, 15 }
 418 };
 419
 420 static void
 421 create_pointer_images(struct wlsc_compositor *ec)
 422 {
 423         int i, count;
 424
 425         count = ARRAY_LENGTH(pointer_images);
 426         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 427         for (i = 0; i < count; i++) {
 428                 ec->pointer_sprites[i] =
 429                         create_sprite_from_png(ec,
 430                                                pointer_images[i].filename,
 431                                                SPRITE_USE_CURSOR);
 432         }
 433 }
 434
 435 static struct wlsc_surface *
 436 background_create(struct wlsc_output *output, const char *filename)
 437 {
 438         struct wlsc_surface *background;
 439         struct wlsc_sprite *sprite;
 440
 441         background = wlsc_surface_create(output->compositor,
 442                                          output->x, output->y,
 443                                          output->current->width,
 444                                          output->current->height);
 445         if (background == NULL)
 446                 return NULL;
 447
 448         sprite = create_sprite_from_png(output->compositor, filename, 0);
 449         if (sprite == NULL) {
 450                 free(background);
 451                 return NULL;
 452         }
 453
 454         wlsc_sprite_attach(sprite, &background->surface);
 455
 456         return background;
 457 }
 458
 459 static int
 460 texture_region(struct wlsc_surface *es, pixman_region32_t *region)
 461 {
 462         struct wlsc_compositor *ec = es->compositor;
 463         GLfloat *v, inv_width, inv_height;
 464         pixman_box32_t *rectangles;
 465         unsigned int *p;
 466         int i, n;
 467
 468         rectangles = pixman_region32_rectangles(region, &n);
 469         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 470         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 471         inv_width = 1.0 / es->pitch;
 472         inv_height = 1.0 / es->height;
 473
 474         for (i = 0; i < n; i++, v += 16, p += 6) {
 475                 v[ 0] = rectangles[i].x1;
 476                 v[ 1] = rectangles[i].y1;
 477                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 478                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 479
 480                 v[ 4] = rectangles[i].x1;
 481                 v[ 5] = rectangles[i].y2;
 482                 v[ 6] = v[ 2];
 483                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 484
 485                 v[ 8] = rectangles[i].x2;
 486                 v[ 9] = rectangles[i].y1;
 487                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 488                 v[11] = v[ 3];
 489
 490                 v[12] = rectangles[i].x2;
 491                 v[13] = rectangles[i].y2;
 492                 v[14] = v[10];
 493                 v[15] = v[ 7];
 494
 495                 p[0] = i * 4 + 0;
 496                 p[1] = i * 4 + 1;
 497                 p[2] = i * 4 + 2;
 498                 p[3] = i * 4 + 2;
 499                 p[4] = i * 4 + 1;
 500                 p[5] = i * 4 + 3;
 501         }
 502
 503         return n;
 504 }
 505
 506 static void
 507 transform_vertex(struct wlsc_surface *surface,
 508                  GLfloat x, GLfloat y, GLfloat u, GLfloat v, GLfloat *r)
 509 {
 510         struct wlsc_vector t;
 511
 512         t.f[0] = x;
 513         t.f[1] = y;
 514         t.f[2] = 0.0;
 515         t.f[3] = 1.0;
 516
 517         wlsc_matrix_transform(&surface->transform->matrix, &t);
 518
 519         r[ 0] = t.f[0];
 520         r[ 1] = t.f[1];
 521         r[ 2] = u;
 522         r[ 3] = v;
 523 }
 524
 525 static int
 526 texture_transformed_surface(struct wlsc_surface *es)
 527 {
 528         struct wlsc_compositor *ec = es->compositor;
 529         GLfloat *v;
 530         unsigned int *p;
 531
 532         v = wl_array_add(&ec->vertices, 16 * sizeof *v);
 533         p = wl_array_add(&ec->indices, 6 * sizeof *p);
 534
 535         transform_vertex(es, es->x, es->y, 0.0, 0.0, &v[0]);
 536         transform_vertex(es, es->x, es->y + es->height, 0.0, 1.0, &v[4]);
 537         transform_vertex(es, es->x + es->width, es->y, 1.0, 0.0, &v[8]);
 538         transform_vertex(es, es->x + es->width, es->y + es->height,
 539                          1.0, 1.0, &v[12]);
 540
 541         p[0] = 0;
 542         p[1] = 1;
 543         p[2] = 2;
 544         p[3] = 2;
 545         p[4] = 1;
 546         p[5] = 3;
 547
 548         return 1;
 549 }
 550
 551 static void
 552 wlsc_surface_draw(struct wlsc_surface *es,
 553                   struct wlsc_output *output, pixman_region32_t *clip)
 554 {
 555         struct wlsc_compositor *ec = es->compositor;
 556         GLfloat *v;
 557         pixman_region32_t repaint;
 558         GLint filter;
 559         int n;
 560
 561         pixman_region32_init_rect(&repaint,
 562                                   es->x, es->y, es->width, es->height);
 563         pixman_region32_intersect(&repaint, &repaint, clip);
 564         if (!pixman_region32_not_empty(&repaint))
 565                 return;
 566
 567         if (es->visual == &ec->compositor.argb_visual) {
 568                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 569                 glEnable(GL_BLEND);
 570         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 571                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 572                 glEnable(GL_BLEND);
 573         } else {
 574                 glDisable(GL_BLEND);
 575         }
 576
 577         if (es->transform == NULL) {
 578                 filter = GL_NEAREST;
 579                 n = texture_region(es, &repaint);
 580         } else {
 581                 filter = GL_LINEAR;
 582                 n = texture_transformed_surface(es);
 583         }
 584
 585         glBindTexture(GL_TEXTURE_2D, es->texture);
 586         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 587         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 588
 589         v = ec->vertices.data;
 590         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 591         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 592         glEnableVertexAttribArray(0);
 593         glEnableVertexAttribArray(1);
 594         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 595
 596         ec->vertices.size = 0;
 597         ec->indices.size = 0;
 598         pixman_region32_fini(&repaint);
 599 }
 600
 601 static void
 602 wlsc_surface_raise(struct wlsc_surface *surface)
 603 {
 604         struct wlsc_compositor *compositor = surface->compositor;
 605
 606         wl_list_remove(&surface->link);
 607         wl_list_insert(&compositor->surface_list, &surface->link);
 608 }
 609
 610 WL_EXPORT void
 611 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 612 {
 613         struct wlsc_output *output;
 614
 615         wl_list_for_each(output, &compositor->output_list, link)
 616                 wlsc_output_damage(output);
 617 }
 618
 619 static inline void
 620 wlsc_buffer_post_release(struct wl_buffer *buffer)
 621 {
 622         if (buffer->client == NULL) {
 623                 fprintf(stderr, "buffer.release warning: buffer.client: %p\n",
 624                         buffer->client);
 625                 return;
 626         }
 627
 628         wl_client_post_event(buffer->client,
 629                              &buffer->resource.object,
 630                              WL_BUFFER_RELEASE);
 631 }
 632
 633 WL_EXPORT void
 634 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 635 {
 636         struct wlsc_compositor *compositor = output->compositor;
 637         struct wlsc_animation *animation, *next;
 638
 639         if (output->scanout_buffer) {
 640                 if (--output->scanout_buffer->busy_count == 0)
 641                         wlsc_buffer_post_release(output->scanout_buffer);
 642
 643                 output->scanout_buffer = NULL;
 644         }
 645
 646         output->finished = 1;
 647
 648         wl_event_source_timer_update(compositor->timer_source, 5);
 649         compositor->repaint_on_timeout = 1;
 650
 651         wl_list_for_each_safe(animation, next,
 652                               &compositor->animation_list, link)
 653                 animation->frame(animation, output, msecs);
 654 }
 655
 656 static void
 657 wlsc_output_finish_redraw(struct wlsc_output *output, int msecs)
 658 {
 659         struct wlsc_compositor *compositor = output->compositor;
 660         struct wlsc_surface *es;
 661
 662         wl_list_for_each(es, &compositor->surface_list, link) {
 663                 if (es->output == output) {
 664                         wl_display_post_frame(compositor->wl_display,
 665                                               &es->surface, msecs);
 666                 }
 667         }
 668 }
 669
 670 WL_EXPORT void
 671 wlsc_output_damage(struct wlsc_output *output)
 672 {
 673         struct wlsc_compositor *compositor = output->compositor;
 674
 675         pixman_region32_union_rect(&compositor->damage_region,
 676                                    &compositor->damage_region,
 677                                    output->x, output->y,
 678                                    output->current->width,
 679                                    output->current->height);
 680         wlsc_compositor_schedule_repaint(compositor);
 681 }
 682
 683 static void
 684 fade_frame(struct wlsc_animation *animation,
 685            struct wlsc_output *output, uint32_t msecs)
 686 {
 687         struct wlsc_compositor *compositor =
 688                 container_of(animation,
 689                              struct wlsc_compositor, fade.animation);
 690
 691         wlsc_spring_update(&compositor->fade.spring, msecs);
 692         if (wlsc_spring_done(&compositor->fade.spring)) {
 693                 if (compositor->fade.spring.current > 0.999) {
 694                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 695                         compositor->shell->lock(compositor->shell);
 696                 }
 697                 compositor->fade.spring.current =
 698                         compositor->fade.spring.target;
 699                 wl_list_remove(&animation->link);
 700                 wl_list_init(&animation->link);
 701         }
 702
 703         wlsc_output_damage(output);
 704 }
 705
 706 static void
 707 fade_output(struct wlsc_output *output,
 708             GLfloat tint, pixman_region32_t *region)
 709 {
 710         struct wlsc_compositor *compositor = output->compositor;
 711         struct wlsc_surface surface;
 712         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 713
 714         surface.compositor = compositor;
 715         surface.x = output->x;
 716         surface.y = output->y;
 717         surface.width = output->current->width;
 718         surface.height = output->current->height;
 719         surface.texture = GL_NONE;
 720         surface.transform = NULL;
 721
 722         if (tint <= 1.0)
 723                 surface.visual =
 724                         &compositor->compositor.premultiplied_argb_visual;
 725         else
 726                 surface.visual = &compositor->compositor.rgb_visual;
 727
 728         glUseProgram(compositor->solid_shader.program);
 729         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 730                            1, GL_FALSE, output->matrix.d);
 731         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 732         wlsc_surface_draw(&surface, output, region);
 733 }
 734
 735 static void
 736 wlsc_output_repaint(struct wlsc_output *output)
 737 {
 738         struct wlsc_compositor *ec = output->compositor;
 739         struct wlsc_surface *es;
 740         struct wlsc_input_device *eid, *hw_cursor;
 741         pixman_region32_t new_damage, total_damage;
 742
 743         output->prepare_render(output);
 744
 745         glViewport(0, 0, output->current->width, output->current->height);
 746
 747         glUseProgram(ec->texture_shader.program);
 748         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 749                            1, GL_FALSE, output->matrix.d);
 750         glUniform1i(ec->texture_shader.tex_uniform, 0);
 751
 752         pixman_region32_init(&new_damage);
 753         pixman_region32_init(&total_damage);
 754         pixman_region32_intersect_rect(&new_damage,
 755                                        &ec->damage_region,
 756                                        output->x, output->y,
 757                                        output->current->width,
 758                                        output->current->height);
 759         pixman_region32_subtract(&ec->damage_region,
 760                                  &ec->damage_region, &new_damage);
 761         pixman_region32_union(&total_damage, &new_damage,
 762                               &output->previous_damage_region);
 763         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 764
 765         hw_cursor = NULL;
 766         if (ec->focus && ec->fade.spring.current < 0.001) {
 767                 hw_cursor = (struct wlsc_input_device *) ec->input_device;
 768                 if (output->set_hardware_cursor(output, hw_cursor) < 0)
 769                         hw_cursor = NULL;
 770         } else {
 771                 output->set_hardware_cursor(output, NULL);
 772         }
 773
 774         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 775
 776         if (es->visual == &ec->compositor.rgb_visual && hw_cursor) {
 777                 if (output->prepare_scanout_surface(output, es) == 0) {
 778                         /* We're drawing nothing now,
 779                          * draw the damaged regions later. */
 780                         pixman_region32_union(&ec->damage_region,
 781                                               &ec->damage_region,
 782                                               &total_damage);
 783
 784                         output->scanout_buffer = es->buffer;
 785                         output->scanout_buffer->busy_count++;
 786
 787                         wl_list_remove(&output->scanout_buffer_destroy_listener.link);
 788                         wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
 789                                        &output->scanout_buffer_destroy_listener.link);
 790
 791                         wlsc_output_finish_redraw(output,
 792                                                   wlsc_compositor_get_time());
 793                         return;
 794                 }
 795         }
 796
 797         if (es->fullscreen_output == output) {
 798                 if (es->width < output->current->width ||
 799                     es->height < output->current->height)
 800                         glClear(GL_COLOR_BUFFER_BIT);
 801                 wlsc_surface_draw(es, output, &total_damage);
 802         } else {
 803                 if (output->background)
 804                         wlsc_surface_draw(output->background,
 805                                           output, &total_damage);
 806                 else
 807                         fade_output(output, 1.0, &total_damage);
 808
 809                 glUseProgram(ec->texture_shader.program);
 810                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 811                         if (ec->overlay == es)
 812                                 continue;
 813
 814                         wlsc_surface_draw(es, output, &total_damage);
 815                 }
 816         }
 817
 818         if (ec->overlay)
 819                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 820
 821         if (ec->focus)
 822                 wl_list_for_each(eid, &ec->input_device_list, link) {
 823                         if (&eid->input_device != ec->input_device ||
 824                             eid != hw_cursor)
 825                                 wlsc_surface_draw(eid->sprite, output,
 826                                                   &total_damage);
 827                 }
 828
 829         if (ec->fade.spring.current > 0.001)
 830                 fade_output(output, ec->fade.spring.current, &total_damage);
 831
 832         wlsc_output_finish_redraw(output, wlsc_compositor_get_time());
 833 }
 834
 835 static int
 836 repaint(void *data)
 837 {
 838         struct wlsc_compositor *ec = data;
 839         struct wlsc_output *output;
 840         int repainted_all_outputs = 1;
 841
 842         wl_list_for_each(output, &ec->output_list, link) {
 843                 if (!output->repaint_needed)
 844                         continue;
 845
 846                 if (!output->finished) {
 847                         repainted_all_outputs = 0;
 848                         continue;
 849                 }
 850
 851                 wlsc_output_repaint(output);
 852                 output->finished = 0;
 853                 output->repaint_needed = 0;
 854                 output->present(output);
 855         }
 856
 857         if (repainted_all_outputs)
 858                 ec->repaint_on_timeout = 0;
 859         else
 860                 wl_event_source_timer_update(ec->timer_source, 1);
 861
 862         return 1;
 863 }
 864
 865 WL_EXPORT void
 866 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 867 {
 868         struct wlsc_output *output;
 869
 870         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 871                 return;
 872
 873         wl_list_for_each(output, &compositor->output_list, link)
 874                 output->repaint_needed = 1;
 875
 876         if (compositor->repaint_on_timeout)
 877                 return;
 878
 879         wl_event_source_timer_update(compositor->timer_source, 1);
 880         compositor->repaint_on_timeout = 1;
 881 }
 882
 883 WL_EXPORT void
 884 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 885 {
 886         int done;
 887
 888         done = wlsc_spring_done(&compositor->fade.spring);
 889         compositor->fade.spring.target = tint;
 890         if (wlsc_spring_done(&compositor->fade.spring))
 891                 return;
 892
 893         if (done)
 894                 compositor->fade.spring.timestamp =
 895                         wlsc_compositor_get_time();
 896
 897         wlsc_compositor_damage_all(compositor);
 898         if (wl_list_empty(&compositor->fade.animation.link))
 899                 wl_list_insert(compositor->animation_list.prev,
 900                                &compositor->fade.animation.link);
 901 }
 902
 903 static void
 904 surface_destroy(struct wl_client *client,
 905                 struct wl_surface *surface)
 906 {
 907         wl_resource_destroy(&surface->resource, client,
 908                             wlsc_compositor_get_time());
 909 }
 910
 911 WL_EXPORT void
 912 wlsc_surface_assign_output(struct wlsc_surface *es)
 913 {
 914         struct wlsc_compositor *ec = es->compositor;
 915         struct wlsc_output *output;
 916
 917         struct wlsc_output *tmp = es->output;
 918         es->output = NULL;
 919
 920         wl_list_for_each(output, &ec->output_list, link) {
 921                 if (output->x < es->x && es->x < output->x + output->current->width &&
 922                     output->y < es->y && es->y < output->y + output->current->height) {
 923                         if (output != tmp)
 924                                 printf("assiging surface %p to output %p\n",
 925                                        es, output);
 926                         es->output = output;
 927                 }
 928         }
 929
 930         if (es->output == NULL) {
 931                 printf("no output found\n");
 932                 es->output = container_of(ec->output_list.next,
 933                                           struct wlsc_output, link);
 934         }
 935 }
 936
 937 static void
 938 surface_attach(struct wl_client *client,
 939                struct wl_surface *surface, struct wl_buffer *buffer,
 940                int32_t x, int32_t y)
 941 {
 942         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 943
 944         buffer->busy_count++;
 945
 946         if (es->buffer && es->buffer->busy_count > 0)
 947                 if (--es->buffer->busy_count == 0)
 948                         wlsc_buffer_post_release(es->buffer);
 949
 950         es->buffer = buffer;
 951         wl_list_remove(&es->buffer_destroy_listener.link);
 952         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 953                        &es->buffer_destroy_listener.link);
 954
 955         es->x += x;
 956         es->y += y;
 957         es->width = buffer->width;
 958         es->height = buffer->height;
 959         if (x != 0 || y != 0)
 960                 wlsc_surface_assign_output(es);
 961         if (es->visual == NULL)
 962                 wl_list_insert(&es->compositor->surface_list, &es->link);
 963
 964         wlsc_buffer_attach(buffer, surface);
 965
 966         /* FIXME: This damages the entire old surface, but we should
 967          * really just damage the part that's no longer covered by the
 968          * surface.  Anything covered by the new surface will be
 969          * damaged by the client. */
 970         wlsc_surface_damage(es);
 971
 972         es->compositor->shell->attach(es->compositor->shell, es);
 973 }
 974
 975 static void
 976 surface_damage(struct wl_client *client,
 977                struct wl_surface *surface,
 978                int32_t x, int32_t y, int32_t width, int32_t height)
 979 {
 980         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 981
 982         wlsc_surface_damage_rectangle(es, x, y, width, height);
 983 }
 984
 985 const static struct wl_surface_interface surface_interface = {
 986         surface_destroy,
 987         surface_attach,
 988         surface_damage
 989 };
 990
 991 static void
 992 wlsc_input_device_attach(struct wlsc_input_device *device,
 993                          int x, int y, int width, int height)
 994 {
 995         wlsc_surface_damage(device->sprite);
 996
 997         device->hotspot_x = x;
 998         device->hotspot_y = y;
 999
1000         device->sprite->x = device->input_device.x - device->hotspot_x;
1001         device->sprite->y = device->input_device.y - device->hotspot_y;
1002         device->sprite->width = width;
1003         device->sprite->height = height;
1004
1005         wlsc_surface_damage(device->sprite);
1006 }
1007
1008 static void
1009 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1010                                 struct wl_buffer *buffer, int x, int y)
1011 {
1012         wlsc_buffer_attach(buffer, &device->sprite->surface);
1013         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1014 }
1015
1016 static void
1017 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1018                                 struct wlsc_sprite *sprite, int x, int y)
1019 {
1020         wlsc_sprite_attach(sprite, &device->sprite->surface);
1021         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1022 }
1023
1024 WL_EXPORT void
1025 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1026                                     enum wlsc_pointer_type type)
1027 {
1028         struct wlsc_compositor *compositor =
1029                 (struct wlsc_compositor *) device->input_device.compositor;
1030
1031         wlsc_input_device_attach_sprite(device,
1032                                         compositor->pointer_sprites[type],
1033                                         pointer_images[type].hotspot_x,
1034                                         pointer_images[type].hotspot_y);
1035 }
1036
1037 static void
1038 compositor_create_surface(struct wl_client *client,
1039                           struct wl_compositor *compositor, uint32_t id)
1040 {
1041         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1042         struct wlsc_surface *surface;
1043
1044         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1045         if (surface == NULL) {
1046                 wl_client_post_no_memory(client);
1047                 return;
1048         }
1049
1050         surface->surface.resource.destroy = destroy_surface;
1051
1052         surface->surface.resource.object.id = id;
1053         surface->surface.resource.object.interface = &wl_surface_interface;
1054         surface->surface.resource.object.implementation =
1055                 (void (**)(void)) &surface_interface;
1056         surface->surface.client = client;
1057
1058         wl_client_add_resource(client, &surface->surface.resource);
1059 }
1060
1061 const static struct wl_compositor_interface compositor_interface = {
1062         compositor_create_surface,
1063 };
1064
1065 static void
1066 wlsc_surface_transform(struct wlsc_surface *surface,
1067                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1068 {
1069         *sx = x - surface->x;
1070         *sy = y - surface->y;
1071 }
1072
1073 WL_EXPORT struct wlsc_surface *
1074 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1075 {
1076         struct wlsc_compositor *ec =
1077                 (struct wlsc_compositor *) device->compositor;
1078         struct wlsc_surface *es;
1079
1080         wl_list_for_each(es, &ec->surface_list, link) {
1081                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1082                 if (0 <= *sx && *sx < es->width &&
1083                     0 <= *sy && *sy < es->height)
1084                         return es;
1085         }
1086
1087         return NULL;
1088 }
1089
1090
1091 static void
1092 motion_grab_motion(struct wl_grab *grab,
1093                    uint32_t time, int32_t x, int32_t y)
1094 {
1095         struct wlsc_input_device *device =
1096                 (struct wlsc_input_device *) grab->input_device;
1097         struct wlsc_surface *es =
1098                 (struct wlsc_surface *) device->input_device.pointer_focus;
1099         int32_t sx, sy;
1100
1101         wlsc_surface_transform(es, x, y, &sx, &sy);
1102         wl_client_post_event(es->surface.client,
1103                              &device->input_device.object,
1104                              WL_INPUT_DEVICE_MOTION,
1105                              time, x, y, sx, sy);
1106 }
1107
1108 static void
1109 motion_grab_button(struct wl_grab *grab,
1110                    uint32_t time, int32_t button, int32_t state)
1111 {
1112         wl_client_post_event(grab->input_device->pointer_focus->client,
1113                              &grab->input_device->object,
1114                              WL_INPUT_DEVICE_BUTTON,
1115                              time, button, state);
1116 }
1117
1118 static void
1119 motion_grab_end(struct wl_grab *grab, uint32_t time)
1120 {
1121 }
1122
1123 static const struct wl_grab_interface motion_grab_interface = {
1124         motion_grab_motion,
1125         motion_grab_button,
1126         motion_grab_end
1127 };
1128
1129 WL_EXPORT void
1130 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1131 {
1132         if (compositor->idle_inhibit)
1133                 return;
1134
1135         wlsc_compositor_fade(compositor, 0.0);
1136         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1137
1138         wl_event_source_timer_update(compositor->idle_source,
1139                                      option_idle_time * 1000);
1140 }
1141
1142 static void
1143 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1144 {
1145         wlsc_compositor_wake(compositor);
1146         compositor->idle_inhibit++;
1147 }
1148
1149 static void
1150 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1151 {
1152         compositor->idle_inhibit--;
1153         wlsc_compositor_wake(compositor);
1154 }
1155
1156 static int
1157 idle_handler(void *data)
1158 {
1159         struct wlsc_compositor *compositor = data;
1160
1161         if (compositor->idle_inhibit)
1162                 return 1;
1163
1164         wlsc_compositor_fade(compositor, 1.0);
1165
1166         return 1;
1167 }
1168
1169 WL_EXPORT void
1170 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1171 {
1172         struct wlsc_surface *es;
1173         struct wlsc_compositor *ec =
1174                 (struct wlsc_compositor *) device->compositor;
1175         struct wlsc_output *output;
1176         const struct wl_grab_interface *interface;
1177         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1178         int32_t sx, sy;
1179         int x_valid = 0, y_valid = 0;
1180         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1181
1182         wlsc_compositor_wake(ec);
1183
1184         wl_list_for_each(output, &ec->output_list, link) {
1185                 if (output->x <= x && x <= output->x + output->current->width)
1186                         x_valid = 1;
1187
1188                 if (output->y <= y && y <= output->y + output->current->height)
1189                         y_valid = 1;
1190
1191                 /* FIXME: calculate this only on output addition/deletion */
1192                 if (output->x < min_x)
1193                         min_x = output->x;
1194                 if (output->y < min_y)
1195                         min_y = output->y;
1196
1197                 if (output->x + output->current->width > max_x)
1198                         max_x = output->x + output->current->width;
1199                 if (output->y + output->current->height > max_y)
1200                         max_y = output->y + output->current->height;
1201         }
1202
1203         if (!x_valid) {
1204                 if (x < min_x)
1205                         x = min_x;
1206                 else if (x >= max_x)
1207                         x = max_x;
1208         }
1209         if (!y_valid) {
1210                 if (y < min_y)
1211                         y = min_y;
1212                 else  if (y >= max_y)
1213                         y = max_y;
1214         }
1215
1216         device->x = x;
1217         device->y = y;
1218
1219         if (device->grab) {
1220                 interface = device->grab->interface;
1221                 interface->motion(device->grab, time, x, y);
1222         } else {
1223                 es = pick_surface(device, &sx, &sy);
1224                 wl_input_device_set_pointer_focus(device,
1225                                                   &es->surface,
1226                                                   time, x, y, sx, sy);
1227                 if (es)
1228                         wl_client_post_event(es->surface.client,
1229                                              &device->object,
1230                                              WL_INPUT_DEVICE_MOTION,
1231                                              time, x, y, sx, sy);
1232         }
1233
1234         wlsc_surface_damage(wd->sprite);
1235
1236         wd->sprite->x = device->x - wd->hotspot_x;
1237         wd->sprite->y = device->y - wd->hotspot_y;
1238
1239         wlsc_surface_damage(wd->sprite);
1240 }
1241
1242 WL_EXPORT void
1243 wlsc_surface_activate(struct wlsc_surface *surface,
1244                       struct wlsc_input_device *device, uint32_t time)
1245 {
1246         struct wlsc_shell *shell = surface->compositor->shell;
1247
1248         wlsc_surface_raise(surface);
1249         if (device->selection)
1250                 shell->set_selection_focus(shell,
1251                                            device->selection,
1252                                            &surface->surface, time);
1253
1254         wl_input_device_set_keyboard_focus(&device->input_device,
1255                                            &surface->surface,
1256                                            time);
1257 }
1258
1259 struct wlsc_binding {
1260         uint32_t key;
1261         uint32_t button;
1262         uint32_t modifier;
1263         wlsc_binding_handler_t handler;
1264         void *data;
1265         struct wl_list link;
1266 };
1267
1268 WL_EXPORT void
1269 notify_button(struct wl_input_device *device,
1270               uint32_t time, int32_t button, int32_t state)
1271 {
1272         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1273         struct wlsc_compositor *compositor =
1274                 (struct wlsc_compositor *) device->compositor;
1275         struct wlsc_binding *b;
1276         struct wlsc_surface *surface =
1277                 (struct wlsc_surface *) device->pointer_focus;
1278
1279         if (state)
1280                 wlsc_compositor_idle_inhibit(compositor);
1281         else
1282                 wlsc_compositor_idle_release(compositor);
1283
1284         if (state && surface && device->grab == NULL) {
1285                 wlsc_surface_activate(surface, wd, time);
1286                 wl_input_device_start_grab(device,
1287                                            &device->motion_grab,
1288                                            button, time);
1289         }
1290
1291         wl_list_for_each(b, &compositor->binding_list, link) {
1292                 if (b->button == button &&
1293                     b->modifier == wd->modifier_state && state) {
1294                         b->handler(&wd->input_device,
1295                                    time, 0, button, state, b->data);
1296                         break;
1297                 }
1298         }
1299
1300         if (device->grab)
1301                 device->grab->interface->button(device->grab, time,
1302                                                 button, state);
1303
1304         if (!state && device->grab && device->grab_button == button)
1305                 wl_input_device_end_grab(device, time);
1306 }
1307
1308 static void
1309 terminate_binding(struct wl_input_device *device, uint32_t time,
1310                   uint32_t key, uint32_t button, uint32_t state, void *data)
1311 {
1312         struct wlsc_compositor *compositor = data;
1313
1314         if (state)
1315                 wl_display_terminate(compositor->wl_display);
1316 }
1317
1318 WL_EXPORT struct wlsc_binding *
1319 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1320                             uint32_t key, uint32_t button, uint32_t modifier,
1321                             wlsc_binding_handler_t handler, void *data)
1322 {
1323         struct wlsc_binding *binding;
1324
1325         binding = malloc(sizeof *binding);
1326         if (binding == NULL)
1327                 return NULL;
1328
1329         binding->key = key;
1330         binding->button = button;
1331         binding->modifier = modifier;
1332         binding->handler = handler;
1333         binding->data = data;
1334         wl_list_insert(compositor->binding_list.prev, &binding->link);
1335
1336         return binding;
1337 }
1338
1339 WL_EXPORT void
1340 wlsc_binding_destroy(struct wlsc_binding *binding)
1341 {
1342         wl_list_remove(&binding->link);
1343         free(binding);
1344 }
1345
1346 static void
1347 update_modifier_state(struct wlsc_input_device *device,
1348                       uint32_t key, uint32_t state)
1349 {
1350         uint32_t modifier;
1351
1352         switch (key) {
1353         case KEY_LEFTCTRL:
1354         case KEY_RIGHTCTRL:
1355                 modifier = MODIFIER_CTRL;
1356                 break;
1357
1358         case KEY_LEFTALT:
1359         case KEY_RIGHTALT:
1360                 modifier = MODIFIER_ALT;
1361                 break;
1362
1363         case KEY_LEFTMETA:
1364         case KEY_RIGHTMETA:
1365                 modifier = MODIFIER_SUPER;
1366                 break;
1367
1368         default:
1369                 modifier = 0;
1370                 break;
1371         }
1372
1373         if (state)
1374                 device->modifier_state |= modifier;
1375         else
1376                 device->modifier_state &= ~modifier;
1377 }
1378
1379 WL_EXPORT void
1380 notify_key(struct wl_input_device *device,
1381            uint32_t time, uint32_t key, uint32_t state)
1382 {
1383         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1384         struct wlsc_compositor *compositor =
1385                 (struct wlsc_compositor *) device->compositor;
1386         uint32_t *k, *end;
1387         struct wlsc_binding *b;
1388
1389         if (state)
1390                 wlsc_compositor_idle_inhibit(compositor);
1391         else
1392                 wlsc_compositor_idle_release(compositor);
1393
1394         wl_list_for_each(b, &compositor->binding_list, link) {
1395                 if (b->key == key &&
1396                     b->modifier == wd->modifier_state) {
1397                         b->handler(&wd->input_device,
1398                                    time, key, 0, state, b->data);
1399                         break;
1400                 }
1401         }
1402
1403         update_modifier_state(wd, key, state);
1404         end = device->keys.data + device->keys.size;
1405         for (k = device->keys.data; k < end; k++) {
1406                 if (*k == key)
1407                         *k = *--end;
1408         }
1409         device->keys.size = (void *) end - device->keys.data;
1410         if (state) {
1411                 k = wl_array_add(&device->keys, sizeof *k);
1412                 *k = key;
1413         }
1414
1415         if (device->keyboard_focus != NULL)
1416                 wl_client_post_event(device->keyboard_focus->client,
1417                                      &device->object,
1418                                      WL_INPUT_DEVICE_KEY, time, key, state);
1419 }
1420
1421 WL_EXPORT void
1422 notify_pointer_focus(struct wl_input_device *device,
1423                      uint32_t time, struct wlsc_output *output,
1424                      int32_t x, int32_t y)
1425 {
1426         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1427         struct wlsc_compositor *compositor =
1428                 (struct wlsc_compositor *) device->compositor;
1429         struct wlsc_surface *es;
1430         int32_t sx, sy;
1431
1432         if (output) {
1433                 device->x = x;
1434                 device->y = y;
1435                 es = pick_surface(device, &sx, &sy);
1436                 wl_input_device_set_pointer_focus(device,
1437                                                   &es->surface,
1438                                                   time, x, y, sx, sy);
1439
1440                 compositor->focus = 1;
1441
1442                 wd->sprite->x = device->x - wd->hotspot_x;
1443                 wd->sprite->y = device->y - wd->hotspot_y;
1444         } else {
1445                 wl_input_device_set_pointer_focus(device, NULL,
1446                                                   time, 0, 0, 0, 0);
1447                 compositor->focus = 0;
1448         }
1449
1450         wlsc_surface_damage(wd->sprite);
1451 }
1452
1453 WL_EXPORT void
1454 notify_keyboard_focus(struct wl_input_device *device,
1455                       uint32_t time, struct wlsc_output *output,
1456                       struct wl_array *keys)
1457 {
1458         struct wlsc_input_device *wd =
1459                 (struct wlsc_input_device *) device;
1460         struct wlsc_compositor *compositor =
1461                 (struct wlsc_compositor *) device->compositor;
1462         struct wlsc_surface *es;
1463         uint32_t *k, *end;
1464
1465         if (!wl_list_empty(&compositor->surface_list))
1466                 es = container_of(compositor->surface_list.next,
1467                                   struct wlsc_surface, link);
1468         else
1469                 es = NULL;
1470
1471         if (output) {
1472                 wl_array_copy(&wd->input_device.keys, keys);
1473                 wd->modifier_state = 0;
1474                 end = device->keys.data + device->keys.size;
1475                 for (k = device->keys.data; k < end; k++) {
1476                         wlsc_compositor_idle_inhibit(compositor);
1477                         update_modifier_state(wd, *k, 1);
1478                 }
1479
1480                 wl_input_device_set_keyboard_focus(&wd->input_device,
1481                                                    &es->surface, time);
1482         } else {
1483                 end = device->keys.data + device->keys.size;
1484                 for (k = device->keys.data; k < end; k++)
1485                         wlsc_compositor_idle_release(compositor);
1486
1487                 wd->modifier_state = 0;
1488                 wl_input_device_set_keyboard_focus(&wd->input_device,
1489                                                    NULL, time);
1490         }
1491 }
1492
1493
1494 static void
1495 input_device_attach(struct wl_client *client,
1496                     struct wl_input_device *device_base,
1497                     uint32_t time,
1498                     struct wl_buffer *buffer, int32_t x, int32_t y)
1499 {
1500         struct wlsc_input_device *device =
1501                 (struct wlsc_input_device *) device_base;
1502
1503         if (time < device->input_device.pointer_focus_time)
1504                 return;
1505         if (device->input_device.pointer_focus == NULL)
1506                 return;
1507         if (device->input_device.pointer_focus->client != client)
1508                 return;
1509
1510         if (buffer == NULL) {
1511                 wlsc_input_device_set_pointer_image(device,
1512                                                     WLSC_POINTER_LEFT_PTR);
1513                 return;
1514         }
1515
1516         wlsc_input_device_attach_buffer(device, buffer, x, y);
1517 }
1518
1519 const static struct wl_input_device_interface input_device_interface = {
1520         input_device_attach,
1521 };
1522
1523 WL_EXPORT void
1524 wlsc_input_device_init(struct wlsc_input_device *device,
1525                        struct wlsc_compositor *ec)
1526 {
1527         wl_input_device_init(&device->input_device, &ec->compositor);
1528
1529         device->input_device.object.interface = &wl_input_device_interface;
1530         device->input_device.object.implementation =
1531                 (void (**)(void)) &input_device_interface;
1532         wl_display_add_object(ec->wl_display, &device->input_device.object);
1533         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1534
1535         device->sprite = wlsc_surface_create(ec,
1536                                              device->input_device.x,
1537                                              device->input_device.y, 32, 32);
1538         device->hotspot_x = 16;
1539         device->hotspot_y = 16;
1540         device->modifier_state = 0;
1541
1542         device->input_device.motion_grab.interface = &motion_grab_interface;
1543
1544         wl_list_insert(ec->input_device_list.prev, &device->link);
1545
1546         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1547 }
1548
1549 static void
1550 wlsc_output_post_geometry(struct wl_client *client,
1551                           struct wl_object *global, uint32_t version)
1552 {
1553         struct wlsc_output *output =
1554                 container_of(global, struct wlsc_output, object);
1555         struct wlsc_mode *mode;
1556
1557         wl_client_post_event(client, global,
1558                              WL_OUTPUT_GEOMETRY,
1559                              output->x,
1560                              output->y,
1561                              output->mm_width,
1562                              output->mm_height,
1563                              output->subpixel,
1564                              output->make, output->model);
1565
1566         wl_list_for_each (mode, &output->mode_list, link) {
1567                 wl_client_post_event(client, global,
1568                                      WL_OUTPUT_MODE,
1569                                      mode->flags,
1570                                      mode->width, mode->height, mode->refresh);
1571         }
1572 }
1573
1574 static const char vertex_shader[] =
1575         "uniform mat4 proj;\n"
1576         "attribute vec2 position;\n"
1577         "attribute vec2 texcoord;\n"
1578         "varying vec2 v_texcoord;\n"
1579         "void main()\n"
1580         "{\n"
1581         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1582         "   v_texcoord = texcoord;\n"
1583         "}\n";
1584
1585 static const char texture_fragment_shader[] =
1586         "precision mediump float;\n"
1587         "varying vec2 v_texcoord;\n"
1588         "uniform sampler2D tex;\n"
1589         "void main()\n"
1590         "{\n"
1591         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1592         "}\n";
1593
1594 static const char solid_fragment_shader[] =
1595         "precision mediump float;\n"
1596         "uniform vec4 color;\n"
1597         "void main()\n"
1598         "{\n"
1599         "   gl_FragColor = color\n;"
1600         "}\n";
1601
1602 static int
1603 compile_shader(GLenum type, const char *source)
1604 {
1605         GLuint s;
1606         char msg[512];
1607         GLint status;
1608
1609         s = glCreateShader(type);
1610         glShaderSource(s, 1, &source, NULL);
1611         glCompileShader(s);
1612         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1613         if (!status) {
1614                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1615                 fprintf(stderr, "shader info: %s\n", msg);
1616                 return GL_NONE;
1617         }
1618
1619         return s;
1620 }
1621
1622 static int
1623 wlsc_shader_init(struct wlsc_shader *shader,
1624                  const char *vertex_source, const char *fragment_source)
1625 {
1626         char msg[512];
1627         GLint status;
1628
1629         shader->vertex_shader =
1630                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1631         shader->fragment_shader =
1632                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1633
1634         shader->program = glCreateProgram();
1635         glAttachShader(shader->program, shader->vertex_shader);
1636         glAttachShader(shader->program, shader->fragment_shader);
1637         glBindAttribLocation(shader->program, 0, "position");
1638         glBindAttribLocation(shader->program, 1, "texcoord");
1639
1640         glLinkProgram(shader->program);
1641         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1642         if (!status) {
1643                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1644                 fprintf(stderr, "link info: %s\n", msg);
1645                 return -1;
1646         }
1647
1648         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1649         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1650
1651         return 0;
1652 }
1653
1654 static int
1655 init_solid_shader(struct wlsc_shader *shader,
1656                   GLuint vertex_shader, const char *fragment_source)
1657 {
1658         GLint status;
1659         char msg[512];
1660
1661         shader->vertex_shader = vertex_shader;
1662         shader->fragment_shader =
1663                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1664
1665         shader->program = glCreateProgram();
1666         glAttachShader(shader->program, shader->vertex_shader);
1667         glAttachShader(shader->program, shader->fragment_shader);
1668         glBindAttribLocation(shader->program, 0, "position");
1669         glBindAttribLocation(shader->program, 1, "texcoord");
1670
1671         glLinkProgram(shader->program);
1672         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1673         if (!status) {
1674                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1675                 fprintf(stderr, "link info: %s\n", msg);
1676                 return -1;
1677         }
1678
1679         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1680         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1681
1682         return 0;
1683 }
1684
1685 WL_EXPORT void
1686 wlsc_output_destroy(struct wlsc_output *output)
1687 {
1688         destroy_surface(&output->background->surface.resource, NULL);
1689 }
1690
1691 WL_EXPORT void
1692 wlsc_output_move(struct wlsc_output *output, int x, int y)
1693 {
1694         struct wlsc_compositor *c = output->compositor;
1695         int flip;
1696
1697         output->x = x;
1698         output->y = y;
1699
1700         if (output->background) {
1701                 output->background->x = x;
1702                 output->background->y = y;
1703         }
1704
1705         pixman_region32_init(&output->previous_damage_region);
1706
1707         wlsc_matrix_init(&output->matrix);
1708         wlsc_matrix_translate(&output->matrix,
1709                               -output->x - output->current->width / 2.0,
1710                               -output->y - output->current->height / 2.0, 0);
1711
1712         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1713         wlsc_matrix_scale(&output->matrix,
1714                           2.0 / output->current->width,
1715                           flip * 2.0 / output->current->height, 1);
1716
1717         pixman_region32_union_rect(&c->damage_region,
1718                                    &c->damage_region,
1719                                    x, y,
1720                                    output->current->width,
1721                                    output->current->height);
1722 }
1723
1724 WL_EXPORT void
1725 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1726                  int x, int y, int width, int height, uint32_t flags)
1727 {
1728         output->compositor = c;
1729         output->x = x;
1730         output->y = y;
1731         output->mm_width = width;
1732         output->mm_height = height;
1733
1734         output->background =
1735                 background_create(output, option_background);
1736
1737         output->flags = flags;
1738         output->finished = 1;
1739         wlsc_output_move(output, x, y);
1740
1741         output->scanout_buffer_destroy_listener.func =
1742                 output_handle_scanout_buffer_destroy;
1743         wl_list_init(&output->scanout_buffer_destroy_listener.link);
1744
1745         output->object.interface = &wl_output_interface;
1746         wl_display_add_object(c->wl_display, &output->object);
1747         wl_display_add_global(c->wl_display, &output->object,
1748                               wlsc_output_post_geometry);
1749 }
1750
1751 static void
1752 shm_buffer_created(struct wl_buffer *buffer)
1753 {
1754         struct wl_list *surfaces_attached_to;
1755
1756         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1757         if (!surfaces_attached_to) {
1758                 buffer->user_data = NULL;
1759                 return;
1760         }
1761
1762         wl_list_init(surfaces_attached_to);
1763
1764         buffer->user_data = surfaces_attached_to;
1765 }
1766
1767 static void
1768 shm_buffer_damaged(struct wl_buffer *buffer,
1769                    int32_t x, int32_t y, int32_t width, int32_t height)
1770 {
1771         struct wl_list *surfaces_attached_to = buffer->user_data;
1772         struct wlsc_surface *es;
1773         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1774
1775         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1776                 glBindTexture(GL_TEXTURE_2D, es->texture);
1777                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1778                              tex_width, buffer->height, 0,
1779                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1780                              wl_shm_buffer_get_data(buffer));
1781                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1782                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1783         }
1784 }
1785
1786 static void
1787 shm_buffer_destroyed(struct wl_buffer *buffer)
1788 {
1789         struct wl_list *surfaces_attached_to = buffer->user_data;
1790         struct wlsc_surface *es, *next;
1791
1792         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1793                 wl_list_remove(&es->buffer_link);
1794                 wl_list_init(&es->buffer_link);
1795         }
1796
1797         free(surfaces_attached_to);
1798 }
1799
1800 const static struct wl_shm_callbacks shm_callbacks = {
1801         shm_buffer_created,
1802         shm_buffer_damaged,
1803         shm_buffer_destroyed
1804 };
1805
1806 WL_EXPORT int
1807 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1808 {
1809         struct wl_event_loop *loop;
1810         const char *extensions;
1811
1812         ec->wl_display = display;
1813
1814         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1815
1816         ec->shm = wl_shm_init(display, &shm_callbacks);
1817
1818         ec->image_target_texture_2d =
1819                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1820         ec->image_target_renderbuffer_storage = (void *)
1821                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1822         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1823         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1824         ec->bind_display =
1825                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1826         ec->unbind_display =
1827                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1828
1829         extensions = (const char *) glGetString(GL_EXTENSIONS);
1830         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1831                 fprintf(stderr,
1832                         "GL_EXT_texture_format_BGRA8888 not available\n");
1833                 return -1;
1834         }
1835
1836         extensions =
1837                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1838         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1839                 ec->has_bind_display = 1;
1840         if (ec->has_bind_display)
1841                 ec->bind_display(ec->display, ec->wl_display);
1842
1843         wl_list_init(&ec->surface_list);
1844         wl_list_init(&ec->input_device_list);
1845         wl_list_init(&ec->output_list);
1846         wl_list_init(&ec->binding_list);
1847         wl_list_init(&ec->animation_list);
1848         wlsc_spring_init(&ec->fade.spring, 0.8, 0.0, 0.0);
1849         ec->fade.animation.frame = fade_frame;
1850         wl_list_init(&ec->fade.animation.link);
1851
1852         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1853                                     MODIFIER_CTRL | MODIFIER_ALT,
1854                                     terminate_binding, ec);
1855
1856         create_pointer_images(ec);
1857
1858         screenshooter_create(ec);
1859
1860         glActiveTexture(GL_TEXTURE0);
1861
1862         if (wlsc_shader_init(&ec->texture_shader,
1863                              vertex_shader, texture_fragment_shader) < 0)
1864                 return -1;
1865         if (init_solid_shader(&ec->solid_shader,
1866                               ec->texture_shader.vertex_shader,
1867                               solid_fragment_shader) < 0)
1868                 return -1;
1869
1870         loop = wl_display_get_event_loop(ec->wl_display);
1871         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1872         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1873
1874         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1875         pixman_region32_init(&ec->damage_region);
1876         wlsc_compositor_schedule_repaint(ec);
1877
1878         return 0;
1879 }
1880
1881 static int on_term_signal(int signal_number, void *data)
1882 {
1883         struct wlsc_compositor *ec = data;
1884
1885         wl_display_terminate(ec->wl_display);
1886
1887         return 1;
1888 }
1889
1890 static void *
1891 load_module(const char *name, const char *entrypoint, void **handle)
1892 {
1893         char path[PATH_MAX];
1894         void *module, *init;
1895
1896         if (name[0] != '/')
1897                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
1898         else
1899                 snprintf(path, sizeof path, "%s", name);
1900
1901         module = dlopen(path, RTLD_LAZY);
1902         if (!module) {
1903                 fprintf(stderr,
1904                         "failed to load module: %s\n", dlerror());
1905                 return NULL;
1906         }
1907
1908         init = dlsym(module, entrypoint);
1909         if (!init) {
1910                 fprintf(stderr,
1911                         "failed to lookup init function: %s\n", dlerror());
1912                 return NULL;
1913         }
1914
1915         return init;
1916 }
1917
1918 int main(int argc, char *argv[])
1919 {
1920         struct wl_display *display;
1921         struct wlsc_compositor *ec;
1922         struct wl_event_loop *loop;
1923         int o;
1924         void *shell_module, *backend_module;
1925         int (*shell_init)(struct wlsc_compositor *ec);
1926         struct wlsc_compositor
1927                 *(*backend_init)(struct wl_display *display, char *options);
1928         char *backend = NULL;
1929         char *backend_options = "";
1930         char *shell = NULL;
1931         char *p;
1932
1933         static const char opts[] = "B:b:o:S:i:s:";
1934         static const struct option longopts[ ] = {
1935                 { "backend", 1, NULL, 'B' },
1936                 { "backend-options", 1, NULL, 'o' },
1937                 { "background", 1, NULL, 'b' },
1938                 { "socket", 1, NULL, 'S' },
1939                 { "idle-time", 1, NULL, 'i' },
1940                 { "shell", 1, NULL, 's' },
1941                 { NULL, }
1942         };
1943
1944         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1945                 switch (o) {
1946                 case 'b':
1947                         option_background = optarg;
1948                         break;
1949                 case 'B':
1950                         backend = optarg;
1951                         break;
1952                 case 'o':
1953                         backend_options = optarg;
1954                         break;
1955                 case 'S':
1956                         option_socket_name = optarg;
1957                         break;
1958                 case 'i':
1959                         option_idle_time = strtol(optarg, &p, 0);
1960                         if (*p != '\0') {
1961                                 fprintf(stderr,
1962                                         "invalid idle time option: %s\n",
1963                                         optarg);
1964                                 exit(EXIT_FAILURE);
1965                         }
1966                         break;
1967                 case 's':
1968                         shell = optarg;
1969                         break;
1970                 }
1971         }
1972
1973         display = wl_display_create();
1974
1975         ec = NULL;
1976
1977         if (!backend) {
1978                 if (getenv("WAYLAND_DISPLAY"))
1979                         backend = "wayland-backend.so";
1980                 else if (getenv("DISPLAY"))
1981                         backend = "x11-backend.so";
1982                 else if (getenv("OPENWFD"))
1983                         backend = "openwfd-backend.so";
1984                 else
1985                         backend = "drm-backend.so";
1986         }
1987
1988         if (!shell)
1989                 shell = "desktop-shell.so";
1990
1991         backend_init = load_module(backend, "backend_init", &backend_module);
1992         if (!backend_init)
1993                 exit(EXIT_FAILURE);
1994
1995         shell_init = load_module(shell, "shell_init", &shell_module);
1996         if (!shell_init)
1997                 exit(EXIT_FAILURE);
1998
1999         ec = backend_init(display, backend_options);
2000         if (ec == NULL) {
2001                 fprintf(stderr, "failed to create compositor\n");
2002                 exit(EXIT_FAILURE);
2003         }
2004
2005         if (shell_init(ec) < 0)
2006                 exit(EXIT_FAILURE);
2007
2008         if (wl_display_add_socket(display, option_socket_name)) {
2009                 fprintf(stderr, "failed to add socket: %m\n");
2010                 exit(EXIT_FAILURE);
2011         }
2012
2013         loop = wl_display_get_event_loop(ec->wl_display);
2014         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2015         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2016
2017         wl_display_run(display);
2018
2019         if (ec->has_bind_display)
2020                 ec->unbind_display(ec->display, display);
2021         wl_display_destroy(display);
2022
2023         ec->destroy(ec);
2024
2025         return 0;
2026 }