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