compositor/compositor.c

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