compositor/compositor.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #define _GNU_SOURCE
  20
  21 #include "config.h"
  22
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <stdint.h>
  27 #include <limits.h>
  28 #include <stdarg.h>
  29 #include <sys/ioctl.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <gdk-pixbuf/gdk-pixbuf.h>
  33 #include <math.h>
  34 #include <linux/input.h>
  35
  36 #include "wayland-server.h"
  37 #include "compositor.h"
  38
  39 /* The plan here is to generate a random anonymous socket name and
  40  * advertise that through a service on the session dbus.
  41  */
  42 static const char *option_socket_name = NULL;
  43 static const char *option_background = "background.jpg";
  44 static const char *option_geometry = "1024x640";
  45 static int option_connector = 0;
  46
  47 static const GOptionEntry option_entries[] = {
  48         { "background", 'b', 0, G_OPTION_ARG_STRING,
  49           &option_background, "Background image" },
  50         { "connector", 'c', 0, G_OPTION_ARG_INT,
  51           &option_connector, "KMS connector" },
  52         { "geometry", 'g', 0, G_OPTION_ARG_STRING,
  53           &option_geometry, "Geometry" },
  54         { "socket", 's', 0, G_OPTION_ARG_STRING,
  55           &option_socket_name, "Socket Name" },
  56         { NULL }
  57 };
  58
  59 static void
  60 wlsc_matrix_init(struct wlsc_matrix *matrix)
  61 {
  62         static const struct wlsc_matrix identity = {
  63                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  64         };
  65
  66         memcpy(matrix, &identity, sizeof identity);
  67 }
  68
  69 static void
  70 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  71 {
  72         struct wlsc_matrix tmp;
  73         const GLfloat *row, *column;
  74         div_t d;
  75         int i, j;
  76
  77         for (i = 0; i < 16; i++) {
  78                 tmp.d[i] = 0;
  79                 d = div(i, 4);
  80                 row = m->d + d.quot * 4;
  81                 column = n->d + d.rem;
  82                 for (j = 0; j < 4; j++)
  83                         tmp.d[i] += row[j] * column[j * 4];
  84         }
  85         memcpy(m, &tmp, sizeof tmp);
  86 }
  87
  88 static void
  89 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  90 {
  91         struct wlsc_matrix translate = {
  92                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  93         };
  94
  95         wlsc_matrix_multiply(matrix, &translate);
  96 }
  97
  98 static void
  99 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 100 {
 101         struct wlsc_matrix scale = {
 102                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
 103         };
 104
 105         wlsc_matrix_multiply(matrix, &scale);
 106 }
 107
 108 static void
 109 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 110 {
 111         int i, j;
 112         struct wlsc_vector t;
 113
 114         for (i = 0; i < 4; i++) {
 115                 t.f[i] = 0;
 116                 for (j = 0; j < 4; j++)
 117                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 118         }
 119
 120         *v = t;
 121 }
 122
 123 struct wlsc_surface *
 124 wlsc_surface_create(struct wlsc_compositor *compositor,
 125                     int32_t x, int32_t y, int32_t width, int32_t height)
 126 {
 127         struct wlsc_surface *surface;
 128
 129         surface = malloc(sizeof *surface);
 130         if (surface == NULL)
 131                 return NULL;
 132
 133         wl_list_init(&surface->surface.destroy_listener_list);
 134         wl_list_init(&surface->link);
 135         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 136
 137         glGenTextures(1, &surface->texture);
 138         glBindTexture(GL_TEXTURE_2D, surface->texture);
 139         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 140         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 141         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 142         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 143
 144         surface->compositor = compositor;
 145         surface->visual = NULL;
 146         surface->image = EGL_NO_IMAGE_KHR;
 147         surface->saved_texture = 0;
 148         surface->x = x;
 149         surface->y = y;
 150         surface->width = width;
 151         surface->height = height;
 152         wlsc_matrix_init(&surface->matrix);
 153         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 154         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 155
 156         wlsc_matrix_init(&surface->matrix_inv);
 157         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 158         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 159
 160         return surface;
 161 }
 162
 163 void
 164 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 165                               int32_t x, int32_t y,
 166                               int32_t width, int32_t height)
 167 {
 168         struct wlsc_compositor *compositor = surface->compositor;
 169
 170         pixman_region32_union_rect(&compositor->damage_region,
 171                                    &compositor->damage_region,
 172                                    surface->x + x, surface->y + y,
 173                                    width, height);
 174         wlsc_compositor_schedule_repaint(compositor);
 175 }
 176
 177 void
 178 wlsc_surface_damage(struct wlsc_surface *surface)
 179 {
 180         wlsc_surface_damage_rectangle(surface, 0, 0,
 181                                       surface->width, surface->height);
 182 }
 183
 184 uint32_t
 185 get_time(void)
 186 {
 187         struct timeval tv;
 188
 189         gettimeofday(&tv, NULL);
 190
 191         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 192 }
 193
 194 static void
 195 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 196 {
 197         struct wlsc_surface *surface =
 198                 container_of(resource, struct wlsc_surface, surface.resource);
 199         struct wl_listener *l, *next;
 200         uint32_t time;
 201
 202         wlsc_surface_damage(surface);
 203
 204         wl_list_remove(&surface->link);
 205         if (surface->saved_texture == 0)
 206                 glDeleteTextures(1, &surface->texture);
 207         else
 208                 glDeleteTextures(1, &surface->saved_texture);
 209
 210
 211         if (surface->image != EGL_NO_IMAGE_KHR)
 212                 eglDestroyImageKHR(surface->compositor->display,
 213                                    surface->image);
 214
 215         time = get_time();
 216         wl_list_for_each_safe(l, next,
 217                               &surface->surface.destroy_listener_list, link)
 218                 l->func(l, &surface->surface, time);
 219
 220         free(surface);
 221 }
 222
 223 uint32_t *
 224 wlsc_load_image(const char *filename, int width, int height)
 225 {
 226         GdkPixbuf *pixbuf;
 227         GError *error = NULL;
 228         int stride, i, n_channels;
 229         unsigned char *pixels, *end, *argb_pixels, *s, *d;
 230
 231         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 232                                                    width, height,
 233                                                    FALSE, &error);
 234         if (error != NULL) {
 235                 fprintf(stderr, "failed to load image: %s\n", error->message);
 236                 g_error_free(error);
 237                 return NULL;
 238         }
 239
 240         stride = gdk_pixbuf_get_rowstride(pixbuf);
 241         pixels = gdk_pixbuf_get_pixels(pixbuf);
 242         n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 243
 244         argb_pixels = malloc (height * width * 4);
 245         if (argb_pixels == NULL) {
 246                 g_object_unref(pixbuf);
 247                 return NULL;
 248         }
 249
 250         if (n_channels == 4) {
 251                 for (i = 0; i < height; i++) {
 252                         s = pixels + i * stride;
 253                         end = s + width * 4;
 254                         d = argb_pixels + i * width * 4;
 255                         while (s < end) {
 256                                 unsigned int t;
 257
 258 #define MULT(_d,c,a,t) \
 259         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 260
 261                                 MULT(d[0], s[2], s[3], t);
 262                                 MULT(d[1], s[1], s[3], t);
 263                                 MULT(d[2], s[0], s[3], t);
 264                                 d[3] = s[3];
 265                                 s += 4;
 266                                 d += 4;
 267                         }
 268                 }
 269         } else if (n_channels == 3) {
 270                 for (i = 0; i < height; i++) {
 271                         s = pixels + i * stride;
 272                         end = s + width * 3;
 273                         d = argb_pixels + i * width * 4;
 274                         while (s < end) {
 275                                 d[0] = s[2];
 276                                 d[1] = s[1];
 277                                 d[2] = s[0];
 278                                 d[3] = 0xff;
 279                                 s += 3;
 280                                 d += 4;
 281                         }
 282                 }
 283         }
 284
 285         g_object_unref(pixbuf);
 286
 287         return (uint32_t *) argb_pixels;
 288 }
 289
 290 static void
 291 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 292 {
 293         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 294         struct wlsc_compositor *ec = es->compositor;
 295
 296         if (buffer->attach) {
 297                 buffer->attach(buffer, surface);
 298         } else {
 299                 es->image = eglCreateImageKHR(ec->display, ec->context,
 300                                               EGL_WAYLAND_BUFFER_WL,
 301                                               buffer, NULL);
 302
 303                 if (es->saved_texture != 0)
 304                         es->texture = es->saved_texture;
 305                 glBindTexture(GL_TEXTURE_2D, es->texture);
 306                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
 307                 es->visual = buffer->visual;
 308         }
 309 }
 310
 311 static void
 312 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 313 {
 314         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 315
 316         es->image = sprite->image;
 317         if (sprite->image != EGL_NO_IMAGE_KHR) {
 318                 glBindTexture(GL_TEXTURE_2D, es->texture);
 319                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
 320         } else {
 321                 if (es->saved_texture == 0)
 322                         es->saved_texture = es->texture;
 323                 es->texture = sprite->texture;
 324         }
 325
 326         es->visual = sprite->visual;
 327 }
 328
 329 enum sprite_usage {
 330         SPRITE_USE_CURSOR = (1 << 0),
 331 };
 332
 333 static struct wlsc_sprite *
 334 create_sprite_from_png(struct wlsc_compositor *ec,
 335                        const char *filename, int width, int height,
 336                        uint32_t usage)
 337 {
 338         uint32_t *pixels;
 339         struct wlsc_sprite *sprite;
 340
 341         pixels = wlsc_load_image(filename, width, height);
 342         if(pixels == NULL)
 343                 return NULL;
 344
 345         sprite = malloc(sizeof *sprite);
 346         if (sprite == NULL) {
 347                 free(pixels);
 348                 return NULL;
 349         }
 350
 351         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 352         sprite->width = width;
 353         sprite->height = height;
 354         sprite->image = EGL_NO_IMAGE_KHR;
 355
 356         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 357                 sprite->image = ec->create_cursor_image(ec, width, height);
 358
 359         glGenTextures(1, &sprite->texture);
 360         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 361         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 362         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 363         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 364         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 365
 366         if (sprite->image != EGL_NO_IMAGE_KHR) {
 367                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, sprite->image);
 368                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 369                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 370         } else {
 371                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 372                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 373         }
 374
 375         free(pixels);
 376
 377         return sprite;
 378 }
 379
 380 static const struct {
 381         const char *filename;
 382         int hotspot_x, hotspot_y;
 383 } pointer_images[] = {
 384         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 385         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 386         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 387         { DATADIR "/wayland/grabbing.png",              20, 17 },
 388         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 389         { DATADIR "/wayland/left_side.png",             10, 20 },
 390         { DATADIR "/wayland/right_side.png",            30, 19 },
 391         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 392         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 393         { DATADIR "/wayland/top_side.png",              18,  8 },
 394         { DATADIR "/wayland/xterm.png",                 15, 15 }
 395 };
 396
 397 static void
 398 create_pointer_images(struct wlsc_compositor *ec)
 399 {
 400         int i, count;
 401         const int width = 32, height = 32;
 402
 403         count = ARRAY_LENGTH(pointer_images);
 404         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 405         for (i = 0; i < count; i++) {
 406                 ec->pointer_sprites[i] =
 407                         create_sprite_from_png(ec,
 408                                                pointer_images[i].filename,
 409                                                width, height,
 410                                                SPRITE_USE_CURSOR);
 411         }
 412 }
 413
 414 static struct wlsc_surface *
 415 background_create(struct wlsc_output *output, const char *filename)
 416 {
 417         struct wlsc_surface *background;
 418         struct wlsc_sprite *sprite;
 419
 420         background = wlsc_surface_create(output->compositor,
 421                                          output->x, output->y,
 422                                          output->width, output->height);
 423         if (background == NULL)
 424                 return NULL;
 425
 426         sprite = create_sprite_from_png(output->compositor, filename,
 427                                         output->width, output->height, 0);
 428         if (sprite == NULL) {
 429                 free(background);
 430                 return NULL;
 431         }
 432
 433         wlsc_sprite_attach(sprite, &background->surface);
 434
 435         return background;
 436 }
 437
 438 static void
 439 wlsc_surface_draw(struct wlsc_surface *es,
 440                   struct wlsc_output *output, pixman_region32_t *clip)
 441 {
 442         struct wlsc_compositor *ec = es->compositor;
 443         GLfloat *v, inv_width, inv_height;
 444         unsigned int *p;
 445         pixman_region32_t repaint;
 446         pixman_box32_t *rectangles;
 447         int i, n;
 448
 449         pixman_region32_init_rect(&repaint,
 450                                   es->x, es->y, es->width, es->height);
 451         pixman_region32_intersect(&repaint, &repaint, clip);
 452         if (!pixman_region32_not_empty(&repaint))
 453                 return;
 454
 455         if (es->visual == &ec->compositor.argb_visual) {
 456                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 457                 glEnable(GL_BLEND);
 458         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 459                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 460                 glEnable(GL_BLEND);
 461         } else {
 462                 glDisable(GL_BLEND);
 463         }
 464
 465         rectangles = pixman_region32_rectangles(&repaint, &n);
 466         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 467         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 468         inv_width = 1.0 / es->width;
 469         inv_height = 1.0 / es->height;
 470         for (i = 0; i < n; i++, v += 16, p += 6) {
 471                 v[ 0] = rectangles[i].x1;
 472                 v[ 1] = rectangles[i].y1;
 473                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 474                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 475
 476                 v[ 4] = rectangles[i].x1;
 477                 v[ 5] = rectangles[i].y2;
 478                 v[ 6] = v[ 2];
 479                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 480
 481                 v[ 8] = rectangles[i].x2;
 482                 v[ 9] = rectangles[i].y1;
 483                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 484                 v[11] = v[ 3];
 485
 486                 v[12] = rectangles[i].x2;
 487                 v[13] = rectangles[i].y2;
 488                 v[14] = v[10];
 489                 v[15] = v[ 7];
 490
 491                 p[0] = i * 4 + 0;
 492                 p[1] = i * 4 + 1;
 493                 p[2] = i * 4 + 2;
 494                 p[3] = i * 4 + 2;
 495                 p[4] = i * 4 + 1;
 496                 p[5] = i * 4 + 3;
 497         }
 498
 499         glBindTexture(GL_TEXTURE_2D, es->texture);
 500         v = ec->vertices.data;
 501         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 502         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 503         glEnableVertexAttribArray(0);
 504         glEnableVertexAttribArray(1);
 505         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 506
 507         ec->vertices.size = 0;
 508         ec->indices.size = 0;
 509         pixman_region32_fini(&repaint);
 510 }
 511
 512 static void
 513 wlsc_surface_raise(struct wlsc_surface *surface)
 514 {
 515         struct wlsc_compositor *compositor = surface->compositor;
 516
 517         wl_list_remove(&surface->link);
 518         wl_list_insert(&compositor->surface_list, &surface->link);
 519 }
 520
 521 void
 522 wlsc_surface_update_matrix(struct wlsc_surface *es)
 523 {
 524         wlsc_matrix_init(&es->matrix);
 525         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 526         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 527
 528         wlsc_matrix_init(&es->matrix_inv);
 529         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 530         wlsc_matrix_scale(&es->matrix_inv,
 531                           1.0 / es->width, 1.0 / es->height, 1);
 532 }
 533
 534 void
 535 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 536 {
 537         struct wlsc_compositor *compositor = output->compositor;
 538         struct wlsc_surface *es;
 539
 540         wl_list_for_each(es, &compositor->surface_list, link) {
 541                 if (es->output == output) {
 542                         wl_display_post_frame(compositor->wl_display,
 543                                               &es->surface, msecs);
 544                 }
 545         }
 546
 547         output->finished = 1;
 548
 549         wl_event_source_timer_update(compositor->timer_source, 5);
 550         compositor->repaint_on_timeout = 1;
 551 }
 552
 553 static int
 554 wlsc_surface_is_scanoutable(struct wlsc_surface *es,
 555                             struct wlsc_output *output)
 556 {
 557         if (es->width != output->width ||
 558             es->height != output->height ||
 559             es->image == NULL)
 560                 return 0;
 561
 562         if (!output->image_is_scanoutable(output, es->image))
 563                 return 0;
 564
 565         return 1;
 566 }
 567
 568 static void
 569 wlsc_output_repaint(struct wlsc_output *output)
 570 {
 571         struct wlsc_compositor *ec = output->compositor;
 572         struct wlsc_surface *es;
 573         struct wlsc_input_device *eid;
 574         pixman_region32_t new_damage, total_damage, repaint;
 575         int using_hardware_cursor = 1;
 576
 577         output->prepare_render(output);
 578
 579         glViewport(0, 0, output->width, output->height);
 580
 581         glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, output->matrix.d);
 582         glUniform1i(ec->tex_uniform, 0);
 583
 584         pixman_region32_init(&new_damage);
 585         pixman_region32_init(&total_damage);
 586         pixman_region32_intersect_rect(&new_damage,
 587                                        &ec->damage_region,
 588                                        output->x, output->y,
 589                                        output->width, output->height);
 590         pixman_region32_subtract(&ec->damage_region,
 591                                  &ec->damage_region, &new_damage);
 592         pixman_region32_union(&total_damage, &new_damage,
 593                               &output->previous_damage_region);
 594         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 595
 596         if (ec->focus)
 597                 if (output->set_hardware_cursor(output, ec->input_device) < 0)
 598                         using_hardware_cursor = 0;
 599
 600         output->scanout_surface = NULL;
 601
 602         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 603         if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN &&
 604             es->fullscreen_output == output) {
 605                 if (es->visual == &ec->compositor.rgb_visual &&
 606                     using_hardware_cursor &&
 607                     wlsc_surface_is_scanoutable(es, output)) {
 608                         output->scanout_surface = es;
 609                         /* we're drawing nothing now, draw the damages later */
 610                         pixman_region32_union(&ec->damage_region,
 611                                               &ec->damage_region,
 612                                               &total_damage);
 613                 } else {
 614                         if (es->width < output->width ||
 615                             es->height < output->height)
 616                                 glClear(GL_COLOR_BUFFER_BIT);
 617                         wlsc_surface_draw(es, output, &total_damage);
 618                 }
 619         } else {
 620                 wl_list_for_each(es, &ec->surface_list, link) {
 621                         if (es->visual != &ec->compositor.rgb_visual)
 622                                 continue;
 623
 624                         pixman_region32_init_rect(&repaint,
 625                                                   es->x, es->y,
 626                                                   es->width, es->height);
 627                         wlsc_surface_draw(es, output, &total_damage);
 628                         pixman_region32_subtract(&total_damage,
 629                                                  &total_damage, &repaint);
 630                 }
 631
 632                 if (output->background)
 633                         wlsc_surface_draw(output->background,
 634                                           output, &total_damage);
 635                 else
 636                         glClear(GL_COLOR_BUFFER_BIT);
 637
 638                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 639                         if (ec->overlay == es)
 640                                 continue;
 641
 642                         if (es->visual == &ec->compositor.rgb_visual) {
 643                                 pixman_region32_union_rect(&total_damage,
 644                                                            &total_damage,
 645                                                            es->x, es->y,
 646                                                            es->width, es->height);
 647                                 continue;
 648                         }
 649
 650                         wlsc_surface_draw(es, output, &total_damage);
 651                 }
 652         }
 653
 654         if (ec->overlay)
 655                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 656
 657         if (ec->focus)
 658                 wl_list_for_each(eid, &ec->input_device_list, link) {
 659                         if (&eid->input_device != ec->input_device ||
 660                             !using_hardware_cursor)
 661                                 wlsc_surface_draw(eid->sprite, output,
 662                                                   &total_damage);
 663                 }
 664 }
 665
 666 static void
 667 repaint(void *data)
 668 {
 669         struct wlsc_compositor *ec = data;
 670         struct wlsc_output *output;
 671         int repainted_all_outputs = 1;
 672
 673         wl_list_for_each(output, &ec->output_list, link) {
 674                 if (!output->repaint_needed)
 675                         continue;
 676
 677                 if (!output->finished) {
 678                         repainted_all_outputs = 0;
 679                         continue;
 680                 }
 681
 682                 wlsc_output_repaint(output);
 683                 output->finished = 0;
 684                 output->repaint_needed = 0;
 685                 output->present(output);
 686         }
 687
 688         if (repainted_all_outputs)
 689                 ec->repaint_on_timeout = 0;
 690         else
 691                 wl_event_source_timer_update(ec->timer_source, 1);
 692 }
 693
 694 void
 695 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 696 {
 697         struct wlsc_output *output;
 698
 699         wl_list_for_each(output, &compositor->output_list, link)
 700                 output->repaint_needed = 1;
 701
 702         if (compositor->repaint_on_timeout)
 703                 return;
 704
 705         wl_event_source_timer_update(compositor->timer_source, 1);
 706         compositor->repaint_on_timeout = 1;
 707 }
 708
 709 static void
 710 surface_destroy(struct wl_client *client,
 711                 struct wl_surface *surface)
 712 {
 713         wl_resource_destroy(&surface->resource, client);
 714 }
 715
 716 void
 717 wlsc_surface_assign_output(struct wlsc_surface *es)
 718 {
 719         struct wlsc_compositor *ec = es->compositor;
 720         struct wlsc_output *output;
 721
 722         struct wlsc_output *tmp = es->output;
 723         es->output = NULL;
 724
 725         wl_list_for_each(output, &ec->output_list, link) {
 726                 if (output->x < es->x && es->x < output->x + output->width &&
 727                     output->y < es->y && es->y < output->y + output->height) {
 728                         if (output != tmp)
 729                                 printf("assiging surface %p to output %p\n",
 730                                        es, output);
 731                         es->output = output;
 732                 }
 733         }
 734
 735         if (es->output == NULL) {
 736                 printf("no output found\n");
 737                 es->output = container_of(ec->output_list.next,
 738                                           struct wlsc_output, link);
 739         }
 740 }
 741
 742 static void
 743 surface_attach(struct wl_client *client,
 744                struct wl_surface *surface, struct wl_buffer *buffer,
 745                int32_t x, int32_t y)
 746 {
 747         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 748
 749         /* FIXME: This damages the entire old surface, but we should
 750          * really just damage the part that's no longer covered by the
 751          * surface.  Anything covered by the new surface will be
 752          * damaged by the client. */
 753         wlsc_surface_damage(es);
 754
 755         wlsc_buffer_attach(buffer, surface);
 756
 757         es->buffer = buffer;
 758         es->x += x;
 759         es->y += y;
 760         es->width = buffer->width;
 761         es->height = buffer->height;
 762         if (x != 0 || y != 0)
 763                 wlsc_surface_assign_output(es);
 764         wlsc_surface_update_matrix(es);
 765 }
 766
 767 static void
 768 surface_map_toplevel(struct wl_client *client,
 769                      struct wl_surface *surface)
 770 {
 771         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 772         struct wlsc_compositor *ec = es->compositor;
 773
 774         switch (es->map_type) {
 775         case WLSC_SURFACE_MAP_UNMAPPED:
 776                 es->x = 10 + random() % 400;
 777                 es->y = 10 + random() % 400;
 778                 wlsc_surface_update_matrix(es);
 779                 /* assign to first output */
 780                 es->output = container_of(ec->output_list.next,
 781                                           struct wlsc_output, link);
 782                 wl_list_insert(&es->compositor->surface_list, &es->link);
 783                 break;
 784         case WLSC_SURFACE_MAP_TOPLEVEL:
 785                 return;
 786         case WLSC_SURFACE_MAP_FULLSCREEN:
 787                 es->fullscreen_output = NULL;
 788                 es->x = es->saved_x;
 789                 es->y = es->saved_y;
 790                 wlsc_surface_update_matrix(es);
 791                 break;
 792         default:
 793                 break;
 794         }
 795
 796         wlsc_surface_damage(es);
 797         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 798 }
 799
 800 static void
 801 surface_map_transient(struct wl_client *client,
 802                       struct wl_surface *surface, struct wl_surface *parent,
 803                       int x, int y, uint32_t flags)
 804 {
 805         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 806         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 807
 808         switch (es->map_type) {
 809         case WLSC_SURFACE_MAP_UNMAPPED:
 810                 wl_list_insert(&es->compositor->surface_list, &es->link);
 811                 /* assign to parents output  */
 812                 es->output = pes->output;
 813                 break;
 814         case WLSC_SURFACE_MAP_FULLSCREEN:
 815                 es->fullscreen_output = NULL;
 816                 break;
 817         default:
 818                 break;
 819         }
 820
 821         es->x = pes->x + x;
 822         es->y = pes->y + y;
 823
 824         wlsc_surface_update_matrix(es);
 825         wlsc_surface_damage(es);
 826         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
 827 }
 828
 829 static void
 830 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
 831 {
 832         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 833         struct wlsc_output *output;
 834
 835         /* FIXME: Fullscreen on first output */
 836         /* FIXME: Handle output going away */
 837         output = container_of(es->compositor->output_list.next,
 838                               struct wlsc_output, link);
 839
 840         switch (es->map_type) {
 841         case WLSC_SURFACE_MAP_UNMAPPED:
 842                 es->x = 10 + random() % 400;
 843                 es->y = 10 + random() % 400;
 844                 /* assign to first output */
 845                 es->output = output;
 846                 wl_list_insert(&es->compositor->surface_list, &es->link);
 847                 break;
 848         case WLSC_SURFACE_MAP_FULLSCREEN:
 849                 return;
 850         default:
 851                 break;
 852         }
 853
 854         es->saved_x = es->x;
 855         es->saved_y = es->y;
 856         es->x = (output->width - es->width) / 2;
 857         es->y = (output->height - es->height) / 2;
 858         es->fullscreen_output = output;
 859         wlsc_surface_update_matrix(es);
 860         wlsc_surface_damage(es);
 861         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
 862 }
 863
 864 static void
 865 surface_damage(struct wl_client *client,
 866                struct wl_surface *surface,
 867                int32_t x, int32_t y, int32_t width, int32_t height)
 868 {
 869         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 870
 871         es->buffer->damage(es->buffer, surface, x, y, width, height);
 872
 873         wlsc_surface_damage_rectangle(es, x, y, width, height);
 874 }
 875
 876 const static struct wl_surface_interface surface_interface = {
 877         surface_destroy,
 878         surface_attach,
 879         surface_map_toplevel,
 880         surface_map_transient,
 881         surface_map_fullscreen,
 882         surface_damage
 883 };
 884
 885 static void
 886 wlsc_input_device_attach(struct wlsc_input_device *device,
 887                          int x, int y, int width, int height)
 888 {
 889         wlsc_surface_damage(device->sprite);
 890
 891         device->hotspot_x = x;
 892         device->hotspot_y = y;
 893
 894         device->sprite->x = device->input_device.x - device->hotspot_x;
 895         device->sprite->y = device->input_device.y - device->hotspot_y;
 896         device->sprite->width = width;
 897         device->sprite->height = height;
 898         wlsc_surface_update_matrix(device->sprite);
 899
 900         wlsc_surface_damage(device->sprite);
 901 }
 902
 903 static void
 904 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
 905                                 struct wl_buffer *buffer, int x, int y)
 906 {
 907         wlsc_buffer_attach(buffer, &device->sprite->surface);
 908         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
 909 }
 910
 911 static void
 912 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
 913                                 struct wlsc_sprite *sprite, int x, int y)
 914 {
 915         wlsc_sprite_attach(sprite, &device->sprite->surface);
 916         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
 917 }
 918
 919 void
 920 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
 921                                     enum wlsc_pointer_type type)
 922 {
 923         struct wlsc_compositor *compositor =
 924                 (struct wlsc_compositor *) device->input_device.compositor;
 925
 926         wlsc_input_device_attach_sprite(device,
 927                                         compositor->pointer_sprites[type],
 928                                         pointer_images[type].hotspot_x,
 929                                         pointer_images[type].hotspot_y);
 930 }
 931
 932 static void
 933 compositor_create_surface(struct wl_client *client,
 934                           struct wl_compositor *compositor, uint32_t id)
 935 {
 936         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
 937         struct wlsc_surface *surface;
 938
 939         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
 940         if (surface == NULL) {
 941                 wl_client_post_no_memory(client);
 942                 return;
 943         }
 944
 945         surface->surface.resource.destroy = destroy_surface;
 946
 947         surface->surface.resource.object.id = id;
 948         surface->surface.resource.object.interface = &wl_surface_interface;
 949         surface->surface.resource.object.implementation =
 950                 (void (**)(void)) &surface_interface;
 951         surface->surface.client = client;
 952
 953         wl_client_add_resource(client, &surface->surface.resource);
 954 }
 955
 956 const static struct wl_compositor_interface compositor_interface = {
 957         compositor_create_surface,
 958 };
 959
 960 static void
 961 wlsc_surface_transform(struct wlsc_surface *surface,
 962                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 963 {
 964         struct wlsc_vector v = { { x, y, 0, 1 } };
 965
 966         wlsc_matrix_transform(&surface->matrix_inv, &v);
 967         *sx = v.f[0] * surface->width;
 968         *sy = v.f[1] * surface->height;
 969 }
 970
 971 struct wlsc_surface *
 972 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
 973 {
 974         struct wlsc_compositor *ec =
 975                 (struct wlsc_compositor *) device->compositor;
 976         struct wlsc_surface *es;
 977
 978         wl_list_for_each(es, &ec->surface_list, link) {
 979                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
 980                 if (0 <= *sx && *sx < es->width &&
 981                     0 <= *sy && *sy < es->height)
 982                         return es;
 983         }
 984
 985         return NULL;
 986 }
 987
 988
 989 static void
 990 motion_grab_motion(struct wl_grab *grab,
 991                    uint32_t time, int32_t x, int32_t y)
 992 {
 993         struct wlsc_input_device *device =
 994                 (struct wlsc_input_device *) grab->input_device;
 995         struct wlsc_surface *es =
 996                 (struct wlsc_surface *) device->input_device.pointer_focus;
 997         int32_t sx, sy;
 998
 999         wlsc_surface_transform(es, x, y, &sx, &sy);
1000         wl_client_post_event(es->surface.client,
1001                              &device->input_device.object,
1002                              WL_INPUT_DEVICE_MOTION,
1003                              time, x, y, sx, sy);
1004 }
1005
1006 static void
1007 motion_grab_button(struct wl_grab *grab,
1008                    uint32_t time, int32_t button, int32_t state)
1009 {
1010         wl_client_post_event(grab->input_device->pointer_focus->client,
1011                              &grab->input_device->object,
1012                              WL_INPUT_DEVICE_BUTTON,
1013                              time, button, state);
1014 }
1015
1016 static void
1017 motion_grab_end(struct wl_grab *grab, uint32_t time)
1018 {
1019 }
1020
1021 static const struct wl_grab_interface motion_grab_interface = {
1022         motion_grab_motion,
1023         motion_grab_button,
1024         motion_grab_end
1025 };
1026
1027 void
1028 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1029 {
1030         struct wlsc_surface *es;
1031         struct wlsc_compositor *ec =
1032                 (struct wlsc_compositor *) device->compositor;
1033         struct wlsc_output *output;
1034         const struct wl_grab_interface *interface;
1035         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1036         int32_t sx, sy;
1037         int x_valid = 0, y_valid = 0;
1038         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1039
1040         wl_list_for_each(output, &ec->output_list, link) {
1041                 if (output->x <= x && x <= output->x + output->width)
1042                         x_valid = 1;
1043
1044                 if (output->y <= y && y <= output->y + output->height)
1045                         y_valid = 1;
1046
1047                 /* FIXME: calculate this only on output addition/deletion */
1048                 if (output->x < min_x)
1049                         min_x = output->x;
1050                 if (output->y < min_y)
1051                         min_y = output->y;
1052
1053                 if (output->x + output->width > max_x)
1054                         max_x = output->x + output->width;
1055                 if (output->y + output->height > max_y)
1056                         max_y = output->y + output->height;
1057         }
1058
1059         if (!x_valid) {
1060                 if (x < min_x)
1061                         x = min_x;
1062                 else if (x >= max_x)
1063                         x = max_x;
1064         }
1065         if (!y_valid) {
1066                 if (y < min_y)
1067                         y = min_y;
1068                 else  if (y >= max_y)
1069                         y = max_y;
1070         }
1071
1072         device->x = x;
1073         device->y = y;
1074
1075         if (device->grab) {
1076                 interface = device->grab->interface;
1077                 interface->motion(device->grab, time, x, y);
1078         } else {
1079                 es = pick_surface(device, &sx, &sy);
1080                 wl_input_device_set_pointer_focus(device,
1081                                                   &es->surface,
1082                                                   time, x, y, sx, sy);
1083                 if (es)
1084                         wl_client_post_event(es->surface.client,
1085                                              &device->object,
1086                                              WL_INPUT_DEVICE_MOTION,
1087                                              time, x, y, sx, sy);
1088         }
1089
1090         wlsc_surface_damage(wd->sprite);
1091
1092         wd->sprite->x = device->x - wd->hotspot_x;
1093         wd->sprite->y = device->y - wd->hotspot_y;
1094         wlsc_surface_update_matrix(wd->sprite);
1095
1096         wlsc_surface_damage(wd->sprite);
1097 }
1098
1099 void
1100 wlsc_surface_activate(struct wlsc_surface *surface,
1101                       struct wlsc_input_device *device, uint32_t time)
1102 {
1103         wlsc_surface_raise(surface);
1104         if (device->selection)
1105                 wlsc_selection_set_focus(device->selection,
1106                                          &surface->surface, time);
1107
1108         wl_input_device_set_keyboard_focus(&device->input_device,
1109                                            &surface->surface,
1110                                            time);
1111 }
1112
1113 struct wlsc_binding {
1114         uint32_t key;
1115         uint32_t button;
1116         uint32_t modifier;
1117         wlsc_binding_handler_t handler;
1118         void *data;
1119         struct wl_list link;
1120 };
1121
1122 void
1123 notify_button(struct wl_input_device *device,
1124               uint32_t time, int32_t button, int32_t state)
1125 {
1126         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1127         struct wlsc_compositor *compositor =
1128                 (struct wlsc_compositor *) device->compositor;
1129         struct wlsc_binding *b;
1130         struct wlsc_surface *surface =
1131                 (struct wlsc_surface *) device->pointer_focus;
1132
1133         if (state && surface && device->grab == NULL) {
1134                 wlsc_surface_activate(surface, wd, time);
1135                 wl_input_device_start_grab(device,
1136                                            &device->motion_grab,
1137                                            button, time);
1138         }
1139
1140         wl_list_for_each(b, &compositor->binding_list, link) {
1141                 if (b->button == button &&
1142                     b->modifier == wd->modifier_state && state) {
1143                         b->handler(&wd->input_device,
1144                                    time, 0, button, state, b->data);
1145                         break;
1146                 }
1147         }
1148
1149         if (device->grab)
1150                 device->grab->interface->button(device->grab, time,
1151                                                 button, state);
1152
1153         if (!state && device->grab && device->grab_button == button)
1154                 wl_input_device_end_grab(device, time);
1155 }
1156
1157 static void
1158 terminate_binding(struct wl_input_device *device, uint32_t time,
1159                   uint32_t key, uint32_t button, 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 button, 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->button = button;
1179         binding->modifier = modifier;
1180         binding->handler = handler;
1181         binding->data = data;
1182         wl_list_insert(compositor->binding_list.prev, &binding->link);
1183
1184         return binding;
1185 }
1186
1187 void
1188 wlsc_binding_destroy(struct wlsc_binding *binding)
1189 {
1190         wl_list_remove(&binding->link);
1191         free(binding);
1192 }
1193
1194 static void
1195 update_modifier_state(struct wlsc_input_device *device,
1196                       uint32_t key, uint32_t state)
1197 {
1198         uint32_t modifier;
1199
1200         switch (key) {
1201         case KEY_LEFTCTRL:
1202         case KEY_RIGHTCTRL:
1203                 modifier = MODIFIER_CTRL;
1204                 break;
1205
1206         case KEY_LEFTALT:
1207         case KEY_RIGHTALT:
1208                 modifier = MODIFIER_ALT;
1209                 break;
1210
1211         case KEY_LEFTMETA:
1212         case KEY_RIGHTMETA:
1213                 modifier = MODIFIER_SUPER;
1214                 break;
1215
1216         default:
1217                 modifier = 0;
1218                 break;
1219         }
1220
1221         if (state)
1222                 device->modifier_state |= modifier;
1223         else
1224                 device->modifier_state &= ~modifier;
1225 }
1226
1227 void
1228 notify_key(struct wl_input_device *device,
1229            uint32_t time, uint32_t key, uint32_t state)
1230 {
1231         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1232         struct wlsc_compositor *compositor =
1233                 (struct wlsc_compositor *) device->compositor;
1234         uint32_t *k, *end;
1235         struct wlsc_binding *b;
1236
1237         wl_list_for_each(b, &compositor->binding_list, link) {
1238                 if (b->key == key &&
1239                     b->modifier == wd->modifier_state && state) {
1240                         b->handler(&wd->input_device,
1241                                    time, key, 0, state, b->data);
1242                         break;
1243                 }
1244         }
1245
1246         update_modifier_state(wd, key, state);
1247         end = device->keys.data + device->keys.size;
1248         for (k = device->keys.data; k < end; k++) {
1249                 if (*k == key)
1250                         *k = *--end;
1251         }
1252         device->keys.size = (void *) end - device->keys.data;
1253         if (state) {
1254                 k = wl_array_add(&device->keys, sizeof *k);
1255                 *k = key;
1256         }
1257
1258         if (device->keyboard_focus != NULL)
1259                 wl_client_post_event(device->keyboard_focus->client,
1260                                      &device->object,
1261                                      WL_INPUT_DEVICE_KEY, time, key, state);
1262 }
1263
1264 void
1265 notify_pointer_focus(struct wl_input_device *device,
1266                      uint32_t time, struct wlsc_output *output,
1267                      int32_t x, int32_t y)
1268 {
1269         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1270         struct wlsc_compositor *compositor =
1271                 (struct wlsc_compositor *) device->compositor;
1272         struct wlsc_surface *es;
1273         int32_t sx, sy;
1274
1275         if (output) {
1276                 device->x = x;
1277                 device->y = y;
1278                 es = pick_surface(device, &sx, &sy);
1279                 wl_input_device_set_pointer_focus(device,
1280                                                   &es->surface,
1281                                                   time, x, y, sx, sy);
1282
1283                 compositor->focus = 1;
1284
1285                 wd->sprite->x = device->x - wd->hotspot_x;
1286                 wd->sprite->y = device->y - wd->hotspot_y;
1287                 wlsc_surface_update_matrix(wd->sprite);
1288         } else {
1289                 wl_input_device_set_pointer_focus(device, NULL,
1290                                                   time, 0, 0, 0, 0);
1291                 compositor->focus = 0;
1292         }
1293
1294         wlsc_surface_damage(wd->sprite);
1295 }
1296
1297 void
1298 notify_keyboard_focus(struct wl_input_device *device,
1299                       uint32_t time, struct wlsc_output *output,
1300                       struct wl_array *keys)
1301 {
1302         struct wlsc_input_device *wd =
1303                 (struct wlsc_input_device *) device;
1304         struct wlsc_compositor *compositor =
1305                 (struct wlsc_compositor *) device->compositor;
1306         struct wlsc_surface *es;
1307         uint32_t *k, *end;
1308
1309         if (!wl_list_empty(&compositor->surface_list))
1310                 es = container_of(compositor->surface_list.next,
1311                                   struct wlsc_surface, link);
1312         else
1313                 es = NULL;
1314
1315         if (output) {
1316                 wl_array_copy(&wd->input_device.keys, keys);
1317                 wd->modifier_state = 0;
1318                 end = device->keys.data + device->keys.size;
1319                 for (k = device->keys.data; k < end; k++) {
1320                         update_modifier_state(wd, *k, 1);
1321                 }
1322
1323                 wl_input_device_set_keyboard_focus(&wd->input_device,
1324                                                    &es->surface, time);
1325         } else {
1326                 wd->modifier_state = 0;
1327                 wl_input_device_set_keyboard_focus(&wd->input_device,
1328                                                    NULL, time);
1329         }
1330 }
1331
1332
1333 static void
1334 input_device_attach(struct wl_client *client,
1335                     struct wl_input_device *device_base,
1336                     uint32_t time,
1337                     struct wl_buffer *buffer, int32_t x, int32_t y)
1338 {
1339         struct wlsc_input_device *device =
1340                 (struct wlsc_input_device *) device_base;
1341
1342         if (time < device->input_device.pointer_focus_time)
1343                 return;
1344         if (device->input_device.pointer_focus == NULL)
1345                 return;
1346         if (device->input_device.pointer_focus->client != client)
1347                 return;
1348
1349         if (buffer == NULL) {
1350                 wlsc_input_device_set_pointer_image(device,
1351                                                     WLSC_POINTER_LEFT_PTR);
1352                 return;
1353         }
1354
1355         wlsc_input_device_attach_buffer(device, buffer, x, y);
1356 }
1357
1358 const static struct wl_input_device_interface input_device_interface = {
1359         input_device_attach,
1360 };
1361
1362 void
1363 wlsc_input_device_init(struct wlsc_input_device *device,
1364                        struct wlsc_compositor *ec)
1365 {
1366         wl_input_device_init(&device->input_device, &ec->compositor);
1367
1368         device->input_device.object.interface = &wl_input_device_interface;
1369         device->input_device.object.implementation =
1370                 (void (**)(void)) &input_device_interface;
1371         wl_display_add_object(ec->wl_display, &device->input_device.object);
1372         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1373
1374         device->sprite = wlsc_surface_create(ec,
1375                                              device->input_device.x,
1376                                              device->input_device.y, 32, 32);
1377         device->hotspot_x = 16;
1378         device->hotspot_y = 16;
1379         device->modifier_state = 0;
1380
1381         device->input_device.motion_grab.interface = &motion_grab_interface;
1382
1383         wl_list_insert(ec->input_device_list.prev, &device->link);
1384
1385         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1386 }
1387
1388 static void
1389 wlsc_output_post_geometry(struct wl_client *client, struct wl_object *global)
1390 {
1391         struct wlsc_output *output =
1392                 container_of(global, struct wlsc_output, object);
1393
1394         wl_client_post_event(client, global,
1395                              WL_OUTPUT_GEOMETRY,
1396                              output->x, output->y,
1397                              output->width, output->height);
1398 }
1399
1400 static const char vertex_shader[] =
1401         "uniform mat4 proj;\n"
1402         "attribute vec2 position;\n"
1403         "attribute vec2 texcoord;\n"
1404         "varying vec2 v_texcoord;\n"
1405         "void main()\n"
1406         "{\n"
1407         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1408         "   v_texcoord = texcoord;\n"
1409         "}\n";
1410
1411 static const char fragment_shader[] =
1412         "precision mediump float;\n"
1413         "varying vec2 v_texcoord;\n"
1414         "uniform sampler2D tex;\n"
1415         "void main()\n"
1416         "{\n"
1417         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1418         "}\n";
1419
1420 static int
1421 init_shaders(struct wlsc_compositor *ec)
1422 {
1423         GLuint v, f, program;
1424         const char *p;
1425         char msg[512];
1426         GLint status;
1427
1428         p = vertex_shader;
1429         v = glCreateShader(GL_VERTEX_SHADER);
1430         glShaderSource(v, 1, &p, NULL);
1431         glCompileShader(v);
1432         glGetShaderiv(v, GL_COMPILE_STATUS, &status);
1433         if (!status) {
1434                 glGetShaderInfoLog(v, sizeof msg, NULL, msg);
1435                 fprintf(stderr, "vertex shader info: %s\n", msg);
1436                 return -1;
1437         }
1438
1439         p = fragment_shader;
1440         f = glCreateShader(GL_FRAGMENT_SHADER);
1441         glShaderSource(f, 1, &p, NULL);
1442         glCompileShader(f);
1443         glGetShaderiv(f, GL_COMPILE_STATUS, &status);
1444         if (!status) {
1445                 glGetShaderInfoLog(f, sizeof msg, NULL, msg);
1446                 fprintf(stderr, "fragment shader info: %s\n", msg);
1447                 return -1;
1448         }
1449
1450         program = glCreateProgram();
1451         glAttachShader(program, v);
1452         glAttachShader(program, f);
1453         glBindAttribLocation(program, 0, "position");
1454         glBindAttribLocation(program, 1, "texcoord");
1455
1456         glLinkProgram(program);
1457         glGetProgramiv(program, GL_LINK_STATUS, &status);
1458         if (!status) {
1459                 glGetProgramInfoLog(program, sizeof msg, NULL, msg);
1460                 fprintf(stderr, "link info: %s\n", msg);
1461                 return -1;
1462         }
1463
1464         glUseProgram(program);
1465         ec->proj_uniform = glGetUniformLocation(program, "proj");
1466         ec->tex_uniform = glGetUniformLocation(program, "tex");
1467
1468         return 0;
1469 }
1470
1471 void
1472 wlsc_output_destroy(struct wlsc_output *output)
1473 {
1474         destroy_surface(&output->background->surface.resource, NULL);
1475 }
1476
1477 void
1478 wlsc_output_move(struct wlsc_output *output, int x, int y)
1479 {
1480         struct wlsc_compositor *c = output->compositor;
1481         int flip;
1482
1483         output->x = x;
1484         output->y = y;
1485
1486         if (output->background) {
1487                 output->background->x = x;
1488                 output->background->y = y;
1489                 wlsc_surface_update_matrix(output->background);
1490         }
1491
1492         pixman_region32_init(&output->previous_damage_region);
1493
1494         wlsc_matrix_init(&output->matrix);
1495         wlsc_matrix_translate(&output->matrix,
1496                               -output->x - output->width / 2.0,
1497                               -output->y - output->height / 2.0, 0);
1498
1499         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1500         wlsc_matrix_scale(&output->matrix,
1501                           2.0 / output->width,
1502                           flip * 2.0 / output->height, 1);
1503
1504         pixman_region32_union_rect(&c->damage_region,
1505                                    &c->damage_region,
1506                                    x, y, output->width, output->height);
1507 }
1508
1509 void
1510 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1511                  int x, int y, int width, int height, uint32_t flags)
1512 {
1513         output->compositor = c;
1514         output->x = x;
1515         output->y = y;
1516         output->width = width;
1517         output->height = height;
1518
1519         output->background =
1520                 background_create(output, option_background);
1521
1522         output->flags = flags;
1523         output->finished = 1;
1524         wlsc_output_move(output, x, y);
1525
1526         output->object.interface = &wl_output_interface;
1527         wl_display_add_object(c->wl_display, &output->object);
1528         wl_display_add_global(c->wl_display, &output->object,
1529                               wlsc_output_post_geometry);
1530 }
1531
1532 int
1533 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1534 {
1535         struct wl_event_loop *loop;
1536         const char *extensions;
1537
1538         ec->wl_display = display;
1539
1540         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1541
1542         wlsc_shm_init(ec);
1543         eglBindWaylandDisplayWL(ec->display, ec->wl_display);
1544
1545         wl_list_init(&ec->surface_list);
1546         wl_list_init(&ec->input_device_list);
1547         wl_list_init(&ec->output_list);
1548         wl_list_init(&ec->binding_list);
1549
1550         wlsc_shell_init(ec);
1551         wlsc_switcher_init(ec);
1552
1553         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1554                                     MODIFIER_CTRL | MODIFIER_ALT,
1555                                     terminate_binding, ec);
1556
1557         create_pointer_images(ec);
1558
1559         screenshooter_create(ec);
1560
1561         extensions = (const char *) glGetString(GL_EXTENSIONS);
1562         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1563                 fprintf(stderr,
1564                         "GL_EXT_texture_format_BGRA8888 not available\n");
1565                 return -1;
1566         }
1567
1568         glActiveTexture(GL_TEXTURE0);
1569         if (init_shaders(ec) < 0)
1570                 return -1;
1571
1572         loop = wl_display_get_event_loop(ec->wl_display);
1573         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1574         pixman_region32_init(&ec->damage_region);
1575         wlsc_compositor_schedule_repaint(ec);
1576
1577         return 0;
1578 }
1579
1580 static void on_term_signal(int signal_number, void *data)
1581 {
1582         struct wlsc_compositor *ec = data;
1583
1584         wl_display_terminate(ec->wl_display);
1585 }
1586
1587 int main(int argc, char *argv[])
1588 {
1589         struct wl_display *display;
1590         struct wlsc_compositor *ec;
1591         struct wl_event_loop *loop;
1592         GError *error = NULL;
1593         GOptionContext *context;
1594         int width, height;
1595
1596         g_type_init(); /* GdkPixbuf needs this, it seems. */
1597
1598         context = g_option_context_new(NULL);
1599         g_option_context_add_main_entries(context, option_entries, "Wayland");
1600         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1601                 fprintf(stderr, "option parsing failed: %s\n", error->message);
1602                 exit(EXIT_FAILURE);
1603         }
1604         if (sscanf(option_geometry, "%dx%d", &width, &height) != 2) {
1605                 fprintf(stderr, "invalid geometry option: %s \n",
1606                         option_geometry);
1607                 exit(EXIT_FAILURE);
1608         }
1609
1610         display = wl_display_create();
1611
1612         ec = NULL;
1613
1614 #if BUILD_WAYLAND_COMPOSITOR
1615         if (getenv("WAYLAND_DISPLAY"))
1616                 ec = wayland_compositor_create(display, width, height);
1617 #endif
1618
1619 #if BUILD_X11_COMPOSITOR
1620         if (ec == NULL && getenv("DISPLAY"))
1621                 ec = x11_compositor_create(display, width, height);
1622 #endif
1623
1624 #if BUILD_DRM_COMPOSITOR
1625         if (ec == NULL)
1626                 ec = drm_compositor_create(display, option_connector);
1627 #endif
1628
1629         if (ec == NULL) {
1630                 fprintf(stderr, "failed to create compositor\n");
1631                 exit(EXIT_FAILURE);
1632         }
1633
1634         if (wl_display_add_socket(display, option_socket_name)) {
1635                 fprintf(stderr, "failed to add socket: %m\n");
1636                 exit(EXIT_FAILURE);
1637         }
1638
1639         loop = wl_display_get_event_loop(ec->wl_display);
1640         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
1641         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
1642
1643         wl_display_run(display);
1644
1645         eglUnbindWaylandDisplayWL(ec->display, display);
1646         wl_display_destroy(display);
1647
1648         ec->destroy(ec);
1649
1650         return 0;
1651 }