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 #include <stdio.h>
  20 #include <string.h>
  21 #include <stdlib.h>
  22 #include <stdint.h>
  23 #include <stdarg.h>
  24 #include <sys/ioctl.h>
  25 #include <fcntl.h>
  26 #include <unistd.h>
  27 #include <gdk-pixbuf/gdk-pixbuf.h>
  28 #include <math.h>
  29 #include <time.h>
  30 #include <linux/input.h>
  31
  32 #include "wayland-server-protocol.h"
  33 #include "compositor.h"
  34
  35 const char *option_background = "background.jpg";
  36 int option_connector = 0;
  37
  38 static const GOptionEntry option_entries[] = {
  39         { "background", 'b', 0, G_OPTION_ARG_STRING,
  40           &option_background, "Background image" },
  41         { "connector", 'c', 0, G_OPTION_ARG_INT,
  42           &option_connector, "KMS connector" },
  43         { NULL }
  44 };
  45
  46 static void
  47 wlsc_input_device_set_pointer_focus(struct wlsc_input_device *device,
  48                                     struct wlsc_surface *surface,
  49                                     uint32_t time,
  50                                     int32_t x, int32_t y,
  51                                     int32_t sx, int32_t sy);
  52
  53 static void
  54 wlsc_matrix_init(struct wlsc_matrix *matrix)
  55 {
  56         static const struct wlsc_matrix identity = {
  57                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  58         };
  59
  60         memcpy(matrix, &identity, sizeof identity);
  61 }
  62
  63 static void
  64 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  65 {
  66         struct wlsc_matrix tmp;
  67         const GLfloat *row, *column;
  68         div_t d;
  69         int i, j;
  70
  71         for (i = 0; i < 16; i++) {
  72                 tmp.d[i] = 0;
  73                 d = div(i, 4);
  74                 row = m->d + d.quot * 4;
  75                 column = n->d + d.rem;
  76                 for (j = 0; j < 4; j++)
  77                         tmp.d[i] += row[j] * column[j * 4];
  78         }
  79         memcpy(m, &tmp, sizeof tmp);
  80 }
  81
  82 static void
  83 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  84 {
  85         struct wlsc_matrix translate = {
  86                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  87         };
  88
  89         wlsc_matrix_multiply(matrix, &translate);
  90 }
  91
  92 static void
  93 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  94 {
  95         struct wlsc_matrix scale = {
  96                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
  97         };
  98
  99         wlsc_matrix_multiply(matrix, &scale);
 100 }
 101
 102 static void
 103 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 104 {
 105         int i, j;
 106         struct wlsc_vector t;
 107
 108         for (i = 0; i < 4; i++) {
 109                 t.f[i] = 0;
 110                 for (j = 0; j < 4; j++)
 111                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 112         }
 113
 114         *v = t;
 115 }
 116
 117 static struct wlsc_surface *
 118 wlsc_surface_create(struct wlsc_compositor *compositor,
 119                     struct wl_visual *visual,
 120                     int32_t x, int32_t y, int32_t width, int32_t height)
 121 {
 122         struct wlsc_surface *surface;
 123
 124         surface = malloc(sizeof *surface);
 125         if (surface == NULL)
 126                 return NULL;
 127
 128         glGenTextures(1, &surface->texture);
 129         glBindTexture(GL_TEXTURE_2D, surface->texture);
 130         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 131         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 132         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 133         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 134
 135         surface->compositor = compositor;
 136         surface->visual = visual;
 137         surface->x = x;
 138         surface->y = y;
 139         surface->width = width;
 140         surface->height = height;
 141         wlsc_matrix_init(&surface->matrix);
 142         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 143         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 144
 145         wlsc_matrix_init(&surface->matrix_inv);
 146         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 147         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 148
 149         return surface;
 150 }
 151
 152 static void
 153 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 154 {
 155         struct wlsc_surface *surface =
 156                 container_of(resource, struct wlsc_surface, base.base);
 157         struct wlsc_compositor *compositor = surface->compositor;
 158         struct wlsc_listener *l;
 159
 160         wl_list_remove(&surface->link);
 161         glDeleteTextures(1, &surface->texture);
 162
 163         wl_list_for_each(l, &compositor->surface_destroy_listener_list, link)
 164                 l->func(l, surface);
 165
 166         free(surface);
 167
 168         wlsc_compositor_schedule_repaint(compositor);
 169 }
 170
 171 static int
 172 texture_from_png(const char *filename, int width, int height)
 173 {
 174         GdkPixbuf *pixbuf;
 175         GError *error = NULL;
 176         void *data;
 177         GLenum format;
 178
 179         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 180                                                    width, height,
 181                                                    FALSE, &error);
 182         if (error != NULL)
 183                 return -1;
 184
 185         data = gdk_pixbuf_get_pixels(pixbuf);
 186
 187         if (gdk_pixbuf_get_has_alpha(pixbuf))
 188                 format = GL_RGBA;
 189         else
 190                 format = GL_RGB;
 191
 192         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
 193                      width, height, 0, format, GL_UNSIGNED_BYTE, data);
 194
 195         gdk_pixbuf_unref(pixbuf);
 196
 197         return 0;
 198 }
 199
 200 static const struct {
 201         const char *filename;
 202         int hotspot_x, hotspot_y;
 203 } pointer_images[] = {
 204         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 205         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 206         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 207         { DATADIR "/wayland/grabbing.png",              20, 17 },
 208         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 209         { DATADIR "/wayland/left_side.png",             10, 20 },
 210         { DATADIR "/wayland/right_side.png",            30, 19 },
 211         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 212         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 213         { DATADIR "/wayland/top_side.png",              18,  8 },
 214         { DATADIR "/wayland/xterm.png",                 15, 15 }
 215 };
 216
 217 static void
 218 create_pointer_images(struct wlsc_compositor *ec)
 219 {
 220         int i, count;
 221         GLuint texture;
 222         const int width = 32, height = 32;
 223
 224         EGLint image_attribs[] = {
 225                 EGL_WIDTH,              0,
 226                 EGL_HEIGHT,             0,
 227                 EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
 228                 EGL_DRM_BUFFER_USE_MESA,        EGL_DRM_BUFFER_USE_SCANOUT_MESA,
 229                 EGL_NONE
 230         };
 231
 232         glGenTextures(1, &texture);
 233         glBindTexture(GL_TEXTURE_2D, texture);
 234         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 235         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 236         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 237         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 238
 239         image_attribs[1] = width;
 240         image_attribs[3] = height;
 241         count = ARRAY_LENGTH(pointer_images);
 242         ec->pointer_buffers = malloc(count * sizeof *ec->pointer_buffers);
 243         for (i = 0; i < count; i++) {
 244                 ec->pointer_buffers[i].image =
 245                         eglCreateDRMImageMESA(ec->display, image_attribs);
 246                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
 247                                              ec->pointer_buffers[i].image);
 248                 texture_from_png(pointer_images[i].filename, width, height);
 249                 ec->pointer_buffers[i].visual = &ec->argb_visual;
 250                 ec->pointer_buffers[i].width = width;
 251                 ec->pointer_buffers[i].height = height;
 252         }
 253 }
 254
 255 static struct wlsc_surface *
 256 background_create(struct wlsc_output *output, const char *filename)
 257 {
 258         struct wlsc_surface *background;
 259         GdkPixbuf *pixbuf;
 260         GError *error = NULL;
 261         void *data;
 262         GLenum format;
 263
 264         background = wlsc_surface_create(output->compositor,
 265                                          &output->compositor->rgb_visual,
 266                                          output->x, output->y,
 267                                          output->width, output->height);
 268         if (background == NULL)
 269                 return NULL;
 270
 271         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 272                                                    output->width,
 273                                                    output->height,
 274                                                    FALSE, &error);
 275         if (error != NULL) {
 276                 free(background);
 277                 return NULL;
 278         }
 279
 280         data = gdk_pixbuf_get_pixels(pixbuf);
 281
 282         if (gdk_pixbuf_get_has_alpha(pixbuf))
 283                 format = GL_RGBA;
 284         else
 285                 format = GL_RGB;
 286
 287         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
 288                      output->width, output->height, 0,
 289                      format, GL_UNSIGNED_BYTE, data);
 290
 291         return background;
 292 }
 293
 294 static void
 295 wlsc_surface_draw(struct wlsc_surface *es, struct wlsc_output *output)
 296 {
 297         struct wlsc_compositor *ec = es->compositor;
 298         struct wlsc_matrix tmp;
 299
 300         tmp = es->matrix;
 301         wlsc_matrix_multiply(&tmp, &output->matrix);
 302         glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, tmp.d);
 303         glUniform1i(ec->tex_uniform, 0);
 304
 305         if (es->visual == &ec->argb_visual) {
 306                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 307                 glEnable(GL_BLEND);
 308         } else if (es->visual == &ec->premultiplied_argb_visual) {
 309                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 310                 glEnable(GL_BLEND);
 311         } else {
 312                 glDisable(GL_BLEND);
 313         }
 314
 315         glBindTexture(GL_TEXTURE_2D, es->texture);
 316         glEnable(GL_TEXTURE_2D);
 317         glBindBuffer(GL_ARRAY_BUFFER, ec->vbo);
 318         glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE,
 319                               5 * sizeof(GLfloat), NULL);
 320         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
 321                               5 * sizeof(GLfloat), (GLfloat *) 0 + 3);
 322         glEnableVertexAttribArray(0);
 323         glEnableVertexAttribArray(1);
 324         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 325 }
 326
 327 static void
 328 wlsc_surface_raise(struct wlsc_surface *surface)
 329 {
 330         struct wlsc_compositor *compositor = surface->compositor;
 331
 332         wl_list_remove(&surface->link);
 333         wl_list_insert(&compositor->surface_list, &surface->link);
 334 }
 335
 336 static void
 337 wlsc_surface_update_matrix(struct wlsc_surface *es)
 338 {
 339         wlsc_matrix_init(&es->matrix);
 340         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 341         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 342
 343         wlsc_matrix_init(&es->matrix_inv);
 344         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 345         wlsc_matrix_scale(&es->matrix_inv,
 346                           1.0 / es->width, 1.0 / es->height, 1);
 347 }
 348
 349 void
 350 wlsc_compositor_finish_frame(struct wlsc_compositor *compositor, int msecs)
 351 {
 352         wl_display_post_frame(compositor->wl_display, msecs);
 353         wl_event_source_timer_update(compositor->timer_source, 5);
 354 }
 355
 356 static void
 357 wlsc_output_repaint(struct wlsc_output *output)
 358 {
 359         struct wlsc_compositor *ec = output->compositor;
 360         struct wlsc_surface *es;
 361         struct wlsc_input_device *eid;
 362
 363         glViewport(0, 0, output->width, output->height);
 364
 365         if (output->background)
 366                 wlsc_surface_draw(output->background, output);
 367         else
 368                 glClear(GL_COLOR_BUFFER_BIT);
 369
 370         wl_list_for_each_reverse(es, &ec->surface_list, link)
 371                 wlsc_surface_draw(es, output);
 372
 373         if (ec->focus)
 374                 wl_list_for_each(eid, &ec->input_device_list, link)
 375                         wlsc_surface_draw(eid->sprite, output);
 376 }
 377
 378 static void
 379 repaint(void *data)
 380 {
 381         struct wlsc_compositor *ec = data;
 382         struct wlsc_output *output;
 383
 384         if (!ec->repaint_needed) {
 385                 ec->repaint_on_timeout = 0;
 386                 return;
 387         }
 388
 389         wl_list_for_each(output, &ec->output_list, link)
 390                 wlsc_output_repaint(output);
 391
 392         ec->present(ec);
 393
 394         ec->repaint_needed = 0;
 395 }
 396
 397 void
 398 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 399 {
 400         compositor->repaint_needed = 1;
 401         if (compositor->repaint_on_timeout)
 402                 return;
 403
 404         wl_event_source_timer_update(compositor->timer_source, 1);
 405         compositor->repaint_on_timeout = 1;
 406 }
 407
 408 static void
 409 surface_destroy(struct wl_client *client,
 410                 struct wl_surface *surface)
 411 {
 412         wl_resource_destroy(&surface->base, client);
 413 }
 414
 415 static void
 416 surface_attach(struct wl_client *client,
 417                struct wl_surface *surface, struct wl_buffer *buffer_base)
 418 {
 419         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 420         struct wlsc_buffer *buffer = (struct wlsc_buffer *) buffer_base;
 421
 422         glBindTexture(GL_TEXTURE_2D, es->texture);
 423         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, buffer->image);
 424         es->visual = buffer->visual;
 425         wlsc_compositor_schedule_repaint(es->compositor);
 426 }
 427
 428 static void
 429 surface_map(struct wl_client *client,
 430             struct wl_surface *surface,
 431             int32_t x, int32_t y, int32_t width, int32_t height)
 432 {
 433         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 434
 435         es->x = x;
 436         es->y = y;
 437         es->width = width;
 438         es->height = height;
 439
 440         wlsc_surface_update_matrix(es);
 441         wlsc_compositor_schedule_repaint(es->compositor);
 442 }
 443
 444 static void
 445 surface_damage(struct wl_client *client,
 446                struct wl_surface *surface,
 447                int32_t x, int32_t y, int32_t width, int32_t height)
 448 {
 449         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 450
 451         wlsc_compositor_schedule_repaint(es->compositor);
 452 }
 453
 454 const static struct wl_surface_interface surface_interface = {
 455         surface_destroy,
 456         surface_attach,
 457         surface_map,
 458         surface_damage
 459 };
 460
 461 static void
 462 wlsc_input_device_attach(struct wlsc_input_device *device,
 463                          struct wlsc_buffer *buffer, int x, int y)
 464 {
 465         struct wlsc_compositor *ec = device->ec;
 466
 467         glBindTexture(GL_TEXTURE_2D, device->sprite->texture);
 468         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, buffer->image);
 469         device->sprite->visual = buffer->visual;
 470         device->hotspot_x = x;
 471         device->hotspot_y = y;
 472
 473         device->sprite->x = device->x - device->hotspot_x;
 474         device->sprite->y = device->y - device->hotspot_y;
 475         device->sprite->width = buffer->width;
 476         device->sprite->height = buffer->height;
 477         wlsc_surface_update_matrix(device->sprite);
 478
 479         wlsc_compositor_schedule_repaint(ec);
 480 }
 481
 482
 483 static void
 484 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
 485                                     enum wlsc_pointer_type type)
 486 {
 487         struct wlsc_compositor *compositor = device->ec;
 488
 489         wlsc_input_device_attach(device,
 490                                  &compositor->pointer_buffers[type],
 491                                  pointer_images[type].hotspot_x,
 492                                  pointer_images[type].hotspot_y);
 493 }
 494
 495 static void
 496 wlsc_input_device_start_grab(struct wlsc_input_device *device,
 497                              uint32_t time,
 498                              enum wlsc_grab_type grab)
 499 {
 500         device->grab = grab;
 501         device->grab_surface = device->pointer_focus;
 502         device->grab_dx = device->pointer_focus->x - device->grab_x;
 503         device->grab_dy = device->pointer_focus->y - device->grab_y;
 504         device->grab_width = device->pointer_focus->width;
 505         device->grab_height = device->pointer_focus->height;
 506
 507         wlsc_input_device_set_pointer_focus(device,
 508                                             (struct wlsc_surface *) &wl_grab_surface,
 509                                             time, 0, 0, 0, 0);
 510 }
 511
 512 static void
 513 shell_move(struct wl_client *client, struct wl_shell *shell,
 514            struct wl_surface *surface,
 515            struct wl_input_device *device, uint32_t time)
 516 {
 517         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
 518
 519         if (wd->grab != WLSC_DEVICE_GRAB_MOTION ||
 520             wd->grab_time != time ||
 521             &wd->pointer_focus->base != surface)
 522                 return;
 523
 524         wlsc_input_device_start_grab(wd, time, WLSC_DEVICE_GRAB_MOVE);
 525         wlsc_input_device_set_pointer_image(wd, WLSC_POINTER_DRAGGING);
 526 }
 527
 528 static void
 529 shell_resize(struct wl_client *client, struct wl_shell *shell,
 530              struct wl_surface *surface,
 531              struct wl_input_device *device, uint32_t time, uint32_t edges)
 532 {
 533         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
 534         enum wlsc_pointer_type pointer = WLSC_POINTER_LEFT_PTR;
 535
 536         if (edges == 0 || edges > 15 ||
 537             (edges & 3) == 3 || (edges & 12) == 12)
 538                 return;
 539
 540         if (wd->grab != WLSC_DEVICE_GRAB_MOTION ||
 541             wd->grab_time != time ||
 542             &wd->pointer_focus->base != surface)
 543                 return;
 544
 545         switch (edges) {
 546         case WLSC_DEVICE_GRAB_RESIZE_TOP:
 547                 pointer = WLSC_POINTER_TOP;
 548                 break;
 549         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM:
 550                 pointer = WLSC_POINTER_BOTTOM;
 551                 break;
 552         case WLSC_DEVICE_GRAB_RESIZE_LEFT:
 553                 pointer = WLSC_POINTER_LEFT;
 554                 break;
 555         case WLSC_DEVICE_GRAB_RESIZE_TOP_LEFT:
 556                 pointer = WLSC_POINTER_TOP_LEFT;
 557                 break;
 558         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM_LEFT:
 559                 pointer = WLSC_POINTER_BOTTOM_LEFT;
 560                 break;
 561         case WLSC_DEVICE_GRAB_RESIZE_RIGHT:
 562                 pointer = WLSC_POINTER_RIGHT;
 563                 break;
 564         case WLSC_DEVICE_GRAB_RESIZE_TOP_RIGHT:
 565                 pointer = WLSC_POINTER_TOP_RIGHT;
 566                 break;
 567         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM_RIGHT:
 568                 pointer = WLSC_POINTER_BOTTOM_RIGHT;
 569                 break;
 570         }
 571
 572         wlsc_input_device_start_grab(wd, time, edges);
 573         wlsc_input_device_set_pointer_image(wd, pointer);
 574 }
 575
 576 static void
 577 destroy_drag(struct wl_resource *resource, struct wl_client *client)
 578 {
 579         struct wl_drag *drag =
 580                 container_of(resource, struct wl_drag, resource);
 581
 582         /* FIXME: More stuff */
 583
 584         free(drag);
 585 }
 586
 587 const static struct wl_drag_interface drag_interface;
 588
 589 static void
 590 shell_create_drag(struct wl_client *client,
 591                   struct wl_shell *shell, uint32_t id)
 592 {
 593         struct wl_drag *drag;
 594
 595         drag = malloc(sizeof *drag);
 596         if (drag == NULL) {
 597                 wl_client_post_no_memory(client);
 598                 return;
 599         }
 600
 601         memset(drag, 0, sizeof *drag);
 602         drag->resource.base.id = id;
 603         drag->resource.base.interface = &wl_drag_interface;
 604         drag->resource.base.implementation =
 605                 (void (**)(void)) &drag_interface;
 606
 607         drag->resource.destroy = destroy_drag;
 608
 609         wl_client_add_resource(client, &drag->resource);
 610 }
 611
 612 const static struct wl_shell_interface shell_interface = {
 613         shell_move,
 614         shell_resize,
 615         shell_create_drag
 616 };
 617
 618 static void
 619 compositor_create_surface(struct wl_client *client,
 620                           struct wl_compositor *compositor, uint32_t id)
 621 {
 622         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
 623         struct wlsc_surface *surface;
 624
 625         surface = wlsc_surface_create(ec, NULL, 0, 0, 0, 0);
 626         if (surface == NULL) {
 627                 wl_client_post_no_memory(client);
 628                 return;
 629         }
 630
 631         wl_list_insert(ec->surface_list.prev, &surface->link);
 632         surface->base.base.destroy = destroy_surface;
 633
 634         surface->base.base.base.id = id;
 635         surface->base.base.base.interface = &wl_surface_interface;
 636         surface->base.base.base.implementation =
 637                 (void (**)(void)) &surface_interface;
 638         surface->base.client = client;
 639
 640         wl_client_add_resource(client, &surface->base.base);
 641 }
 642
 643 const static struct wl_compositor_interface compositor_interface = {
 644         compositor_create_surface,
 645 };
 646
 647 static void
 648 wlsc_surface_transform(struct wlsc_surface *surface,
 649                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 650 {
 651         struct wlsc_vector v = { { x, y, 0, 1 } };
 652
 653         wlsc_matrix_transform(&surface->matrix_inv, &v);
 654         *sx = v.f[0] * surface->width;
 655         *sy = v.f[1] * surface->height;
 656 }
 657
 658 static void
 659 wlsc_input_device_set_keyboard_focus(struct wlsc_input_device *device,
 660                                      struct wlsc_surface *surface,
 661                                      uint32_t time)
 662 {
 663         if (device->keyboard_focus == surface)
 664                 return;
 665
 666         if (device->keyboard_focus &&
 667             (!surface || device->keyboard_focus->base.client != surface->base.client))
 668                 wl_surface_post_event(&device->keyboard_focus->base,
 669                                       &device->base.base,
 670                                       WL_INPUT_DEVICE_KEYBOARD_FOCUS,
 671                                       time, NULL, &device->keys);
 672
 673         if (surface)
 674                 wl_surface_post_event(&surface->base,
 675                                       &device->base.base,
 676                                       WL_INPUT_DEVICE_KEYBOARD_FOCUS,
 677                                       time, &surface->base, &device->keys);
 678
 679         device->keyboard_focus = surface;
 680 }
 681
 682 static void
 683 wlsc_input_device_set_pointer_focus(struct wlsc_input_device *device,
 684                                     struct wlsc_surface *surface,
 685                                     uint32_t time,
 686                                     int32_t x, int32_t y,
 687                                     int32_t sx, int32_t sy)
 688 {
 689         if (device->pointer_focus == surface)
 690                 return;
 691
 692         if (device->pointer_focus &&
 693             (!surface || device->pointer_focus->base.client != surface->base.client))
 694                 wl_surface_post_event(&device->pointer_focus->base,
 695                                       &device->base.base,
 696                                       WL_INPUT_DEVICE_POINTER_FOCUS,
 697                                       time, NULL, 0, 0, 0, 0);
 698         if (surface)
 699                 wl_surface_post_event(&surface->base,
 700                                       &device->base.base,
 701                                       WL_INPUT_DEVICE_POINTER_FOCUS,
 702                                       time, &surface->base,
 703                                       x, y, sx, sy);
 704
 705         if (!surface)
 706                 wlsc_input_device_set_pointer_image(device,
 707                                                     WLSC_POINTER_LEFT_PTR);
 708
 709         device->pointer_focus = surface;
 710 }
 711
 712 static struct wlsc_surface *
 713 pick_surface(struct wlsc_input_device *device, int32_t *sx, int32_t *sy)
 714 {
 715         struct wlsc_compositor *ec = device->ec;
 716         struct wlsc_surface *es;
 717
 718         wl_list_for_each(es, &ec->surface_list, link) {
 719                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
 720                 if (0 <= *sx && *sx < es->width &&
 721                     0 <= *sy && *sy < es->height)
 722                         return es;
 723         }
 724
 725         return NULL;
 726 }
 727
 728 static void
 729 wl_drag_set_pointer_focus(struct wl_drag *drag,
 730                           struct wlsc_surface *surface, uint32_t time,
 731                           int32_t x, int32_t y, int32_t sx, int32_t sy);
 732
 733 void
 734 notify_motion(struct wlsc_input_device *device, uint32_t time, int x, int y)
 735 {
 736         struct wlsc_surface *es;
 737         struct wlsc_compositor *ec = device->ec;
 738         struct wlsc_output *output;
 739         int32_t sx, sy, width, height;
 740
 741         /* FIXME: We need some multi head love here. */
 742         output = container_of(ec->output_list.next, struct wlsc_output, link);
 743         if (x < output->x)
 744                 x = 0;
 745         if (y < output->y)
 746                 y = 0;
 747         if (x >= output->x + output->width)
 748                 x = output->x + output->width - 1;
 749         if (y >= output->y + output->height)
 750                 y = output->y + output->height - 1;
 751
 752         device->x = x;
 753         device->y = y;
 754
 755         switch (device->grab) {
 756         case WLSC_DEVICE_GRAB_NONE:
 757                 es = pick_surface(device, &sx, &sy);
 758                 wlsc_input_device_set_pointer_focus(device, es,
 759                                                     time, x, y, sx, sy);
 760                 if (es)
 761                         wl_surface_post_event(&es->base, &device->base.base,
 762                                               WL_INPUT_DEVICE_MOTION,
 763                                               time, x, y, sx, sy);
 764                 break;
 765
 766         case WLSC_DEVICE_GRAB_MOTION:
 767                 es = device->pointer_focus;
 768                 wlsc_surface_transform(es, x, y, &sx, &sy);
 769                 wl_surface_post_event(&es->base, &device->base.base,
 770                                       WL_INPUT_DEVICE_MOTION,
 771                                       time, x, y, sx, sy);
 772                 break;
 773
 774         case WLSC_DEVICE_GRAB_MOVE:
 775                 es = device->grab_surface;
 776                 es->x = x + device->grab_dx;
 777                 es->y = y + device->grab_dy;;
 778                 wl_surface_post_event(&es->base, &ec->shell.base,
 779                                       WL_SHELL_CONFIGURE,
 780                                       time, device->grab,
 781                                       &es->base, es->x, es->y,
 782                                       es->width, es->height);
 783
 784                 wlsc_surface_update_matrix(es);
 785
 786                 break;
 787
 788         case WLSC_DEVICE_GRAB_RESIZE_TOP:
 789         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM:
 790         case WLSC_DEVICE_GRAB_RESIZE_LEFT:
 791         case WLSC_DEVICE_GRAB_RESIZE_TOP_LEFT:
 792         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM_LEFT:
 793         case WLSC_DEVICE_GRAB_RESIZE_RIGHT:
 794         case WLSC_DEVICE_GRAB_RESIZE_TOP_RIGHT:
 795         case WLSC_DEVICE_GRAB_RESIZE_BOTTOM_RIGHT:
 796         case WLSC_DEVICE_GRAB_RESIZE_MASK:
 797                 es = device->grab_surface;
 798
 799                 if (device->grab & WLSC_DEVICE_GRAB_RESIZE_LEFT) {
 800                         sx = x + device->grab_dx;
 801                         width = device->grab_x - x + device->grab_width;
 802                 } else if (device->grab & WLSC_DEVICE_GRAB_RESIZE_RIGHT) {
 803                         sx = device->grab_x + device->grab_dx;
 804                         width = x - device->grab_x + device->grab_width;
 805                 } else {
 806                         sx = device->grab_x + device->grab_dx;
 807                         width = device->grab_width;
 808                 }
 809
 810                 if (device->grab & WLSC_DEVICE_GRAB_RESIZE_TOP) {
 811                         sy = y + device->grab_dy;
 812                         height = device->grab_y - y + device->grab_height;
 813                 } else if (device->grab & WLSC_DEVICE_GRAB_RESIZE_BOTTOM) {
 814                         sy = device->grab_y + device->grab_dy;
 815                         height = y - device->grab_y + device->grab_height;
 816                 } else {
 817                         sy = device->grab_y + device->grab_dy;
 818                         height = device->grab_height;
 819                 }
 820
 821                 wl_surface_post_event(&es->base, &ec->shell.base,
 822                                       WL_SHELL_CONFIGURE, time, device->grab,
 823                                       &es->base, sx, sy, width, height);
 824                 break;
 825
 826         case WLSC_DEVICE_GRAB_DRAG:
 827                 es = pick_surface(device, &sx, &sy);
 828                 wl_drag_set_pointer_focus(device->drag,
 829                                           es, time, x, y, sx, sy);
 830                 if (es)
 831                         wl_surface_post_event(&es->base,
 832                                               &device->drag->drag_offer.base,
 833                                               WL_DRAG_OFFER_MOTION,
 834                                               time, x, y, sx, sy);
 835                 break;
 836
 837         }
 838
 839         device->sprite->x = device->x - device->hotspot_x;
 840         device->sprite->y = device->y - device->hotspot_y;
 841         wlsc_surface_update_matrix(device->sprite);
 842
 843         wlsc_compositor_schedule_repaint(device->ec);
 844 }
 845
 846 static void
 847 wlsc_input_device_end_grab(struct wlsc_input_device *device, uint32_t time)
 848 {
 849         struct wl_drag *drag = device->drag;
 850         struct wlsc_surface *es;
 851         int32_t sx, sy;
 852
 853         switch (device->grab) {
 854         case WLSC_DEVICE_GRAB_DRAG:
 855                 if (drag->target)
 856                         wl_client_post_event(drag->target,
 857                                              &drag->drag_offer.base,
 858                                              WL_DRAG_OFFER_DROP);
 859                 wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
 860                 device->drag = NULL;
 861                 break;
 862         default:
 863                 break;
 864         }
 865
 866         device->grab = WLSC_DEVICE_GRAB_NONE;
 867         es = pick_surface(device, &sx, &sy);
 868         wlsc_input_device_set_pointer_focus(device, es, time,
 869                                             device->x, device->y, sx, sy);
 870 }
 871
 872 void
 873 notify_button(struct wlsc_input_device *device,
 874               uint32_t time, int32_t button, int32_t state)
 875 {
 876         struct wlsc_surface *surface;
 877         struct wlsc_compositor *compositor = device->ec;
 878
 879         surface = device->pointer_focus;
 880         if (surface) {
 881                 if (state && device->grab == WLSC_DEVICE_GRAB_NONE) {
 882                         wlsc_surface_raise(surface);
 883                         device->grab = WLSC_DEVICE_GRAB_MOTION;
 884                         device->grab_button = button;
 885                         device->grab_time = time;
 886                         device->grab_x = device->x;
 887                         device->grab_y = device->y;
 888                         wlsc_input_device_set_keyboard_focus(device,
 889                                                              surface, time);
 890                 }
 891
 892                 if (state && button == BTN_LEFT &&
 893                     device->grab == WLSC_DEVICE_GRAB_MOTION &&
 894                     (device->modifier_state & MODIFIER_SUPER))
 895                         shell_move(NULL, (struct wl_shell *) &compositor->shell,
 896                                    &surface->base, &device->base, time);
 897                 else if (state && button == BTN_MIDDLE &&
 898                            device->grab == WLSC_DEVICE_GRAB_MOTION &&
 899                            (device->modifier_state & MODIFIER_SUPER))
 900                         shell_resize(NULL, (struct wl_shell *) &compositor->shell,
 901
 902                                      &surface->base, &device->base, time,
 903                                      WLSC_DEVICE_GRAB_RESIZE_BOTTOM_RIGHT);
 904                 else if (device->grab == WLSC_DEVICE_GRAB_NONE ||
 905                          device->grab == WLSC_DEVICE_GRAB_MOTION)
 906                         wl_surface_post_event(&surface->base,
 907                                               &device->base.base,
 908                                               WL_INPUT_DEVICE_BUTTON,
 909                                               time, button, state);
 910
 911                 if (!state &&
 912                     device->grab != WLSC_DEVICE_GRAB_NONE &&
 913                     device->grab_button == button) {
 914                         wlsc_input_device_end_grab(device, time);
 915                 }
 916
 917                 wlsc_compositor_schedule_repaint(compositor);
 918         }
 919 }
 920
 921 void
 922 notify_key(struct wlsc_input_device *device,
 923            uint32_t time, uint32_t key, uint32_t state)
 924 {
 925         uint32_t *k, *end;
 926         uint32_t modifier;
 927
 928         switch (key | device->modifier_state) {
 929         case KEY_BACKSPACE | MODIFIER_CTRL | MODIFIER_ALT:
 930                 kill(0, SIGTERM);
 931                 return;
 932         }
 933
 934         switch (key) {
 935         case KEY_LEFTCTRL:
 936         case KEY_RIGHTCTRL:
 937                 modifier = MODIFIER_CTRL;
 938                 break;
 939
 940         case KEY_LEFTALT:
 941         case KEY_RIGHTALT:
 942                 modifier = MODIFIER_ALT;
 943                 break;
 944
 945         case KEY_LEFTMETA:
 946         case KEY_RIGHTMETA:
 947                 modifier = MODIFIER_SUPER;
 948                 break;
 949
 950         default:
 951                 modifier = 0;
 952                 break;
 953         }
 954
 955         if (state)
 956                 device->modifier_state |= modifier;
 957         else
 958                 device->modifier_state &= ~modifier;
 959
 960         end = device->keys.data + device->keys.size;
 961         for (k = device->keys.data; k < end; k++) {
 962                 if (*k == key)
 963                         *k = *--end;
 964         }
 965         device->keys.size = (void *) end - device->keys.data;
 966         if (state) {
 967                 k = wl_array_add(&device->keys, sizeof *k);
 968                 *k = key;
 969         }
 970
 971         if (device->keyboard_focus != NULL)
 972                 wl_surface_post_event(&device->keyboard_focus->base,
 973                                       &device->base.base,
 974                                       WL_INPUT_DEVICE_KEY, time, key, state);
 975 }
 976
 977 static void
 978 input_device_attach(struct wl_client *client,
 979                     struct wl_input_device *device_base,
 980                     struct wl_buffer *buffer_base, int32_t x, int32_t y)
 981 {
 982         struct wlsc_input_device *device =
 983                 (struct wlsc_input_device *) device_base;
 984         struct wlsc_buffer *buffer = (struct wlsc_buffer *) buffer_base;
 985
 986         if (device->pointer_focus == NULL)
 987                 return;
 988         if (device->pointer_focus->base.client != client &&
 989             !(&device->pointer_focus->base == &wl_grab_surface &&
 990               device->grab_surface->base.client == client))
 991                 return;
 992
 993         if (buffer == NULL) {
 994                 wlsc_input_device_set_pointer_image(device,
 995                                                     WLSC_POINTER_LEFT_PTR);
 996                 return;
 997         }
 998
 999         wlsc_input_device_attach(device, buffer, x, y);
1000 }
1001
1002 const static struct wl_input_device_interface input_device_interface = {
1003         input_device_attach,
1004 };
1005
1006 static uint32_t
1007 get_time(void)
1008 {
1009         struct timeval tv;
1010
1011         gettimeofday(&tv, NULL);
1012
1013         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
1014 }
1015
1016 static void
1017 handle_surface_destroy(struct wlsc_listener *listener,
1018                        struct wlsc_surface *surface)
1019 {
1020         struct wlsc_input_device *device =
1021                 container_of(listener, struct wlsc_input_device, listener);
1022         uint32_t time = get_time();
1023
1024         if (device->keyboard_focus == surface)
1025                 wlsc_input_device_set_keyboard_focus(device, NULL, time);
1026         if (device->pointer_focus == surface ||
1027             (&device->pointer_focus->base == &wl_grab_surface &&
1028              device->grab_surface == surface))
1029                 wlsc_input_device_end_grab(device, time);
1030 }
1031
1032 static void
1033 wl_drag_set_pointer_focus(struct wl_drag *drag,
1034                           struct wlsc_surface *surface, uint32_t time,
1035                           int32_t x, int32_t y, int32_t sx, int32_t sy)
1036 {
1037         char **p, **end;
1038
1039         if (drag->pointer_focus == &surface->base)
1040                 return;
1041
1042         if (drag->pointer_focus &&
1043             (!surface || drag->pointer_focus->client != surface->base.client))
1044                 wl_surface_post_event(drag->pointer_focus,
1045                                       &drag->drag_offer.base,
1046                                       WL_DRAG_OFFER_POINTER_FOCUS,
1047                                       time, NULL, 0, 0, 0, 0);
1048
1049         if (surface &&
1050             (!drag->pointer_focus ||
1051              drag->pointer_focus->client != surface->base.client)) {
1052                 wl_client_post_global(surface->base.client,
1053                                       &drag->drag_offer.base);
1054
1055                 end = drag->types.data + drag->types.size;
1056                 for (p = drag->types.data; p < end; p++)
1057                         wl_surface_post_event(&surface->base,
1058                                               &drag->drag_offer.base,
1059                                               WL_DRAG_OFFER_OFFER, *p);
1060         }
1061
1062         if (surface) {
1063                 wl_surface_post_event(&surface->base,
1064                                       &drag->drag_offer.base,
1065                                       WL_DRAG_OFFER_POINTER_FOCUS,
1066                                       time, &surface->base,
1067                                       x, y, sx, sy);
1068
1069         }
1070
1071         drag->pointer_focus = &surface->base;
1072         drag->pointer_focus_time = time;
1073         drag->target = NULL;
1074 }
1075
1076 static void
1077 drag_offer_accept(struct wl_client *client,
1078                   struct wl_drag_offer *offer, uint32_t time, const char *type)
1079 {
1080         struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
1081         char **p, **end;
1082
1083         /* If the client responds to drag pointer_focus or motion
1084          * events after the pointer has left the surface, we just
1085          * discard the accept requests.  The drag source just won't
1086          * get the corresponding 'target' events and eventually the
1087          * next surface/root will start sending events. */
1088         if (time < drag->pointer_focus_time)
1089                 return;
1090
1091         drag->target = client;
1092         drag->type = NULL;
1093         end = drag->types.data + drag->types.size;
1094         for (p = drag->types.data; p < end; p++)
1095                 if (type && strcmp(*p, type) == 0)
1096                         drag->type = *p;
1097
1098         wl_surface_post_event(drag->source, &drag->resource.base,
1099                               WL_DRAG_TARGET, drag->type);
1100 }
1101
1102 static void
1103 drag_offer_receive(struct wl_client *client,
1104                    struct wl_drag_offer *offer, int fd)
1105 {
1106         struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
1107
1108         wl_surface_post_event(drag->source, &drag->resource.base,
1109                               WL_DRAG_FINISH, fd);
1110         close(fd);
1111 }
1112
1113 static const struct wl_drag_offer_interface drag_offer_interface = {
1114         drag_offer_accept,
1115         drag_offer_receive
1116 };
1117
1118 static void
1119 drag_offer(struct wl_client *client, struct wl_drag *drag, const char *type)
1120 {
1121         char **p;
1122
1123         p = wl_array_add(&drag->types, sizeof *p);
1124         if (p)
1125                 *p = strdup(type);
1126         if (!p || !*p)
1127                 wl_client_post_no_memory(client);
1128 }
1129
1130 static void
1131 drag_activate(struct wl_client *client,
1132               struct wl_drag *drag,
1133               struct wl_surface *surface,
1134               struct wl_input_device *input_device, uint32_t time)
1135 {
1136         struct wl_display *display = wl_client_get_display (client);
1137         struct wlsc_input_device *device =
1138                 (struct wlsc_input_device *) input_device;
1139         struct wlsc_surface *target;
1140         int32_t sx, sy;
1141
1142         if (device->grab != WLSC_DEVICE_GRAB_MOTION ||
1143             &device->pointer_focus->base != surface ||
1144             device->grab_time != time)
1145                 return;
1146
1147         drag->source = surface;
1148         drag->input_device = input_device;
1149
1150         drag->drag_offer.base.interface = &wl_drag_offer_interface;
1151         drag->drag_offer.base.implementation =
1152                 (void (**)(void)) &drag_offer_interface;
1153
1154         wl_display_add_object(display, &drag->drag_offer.base);
1155
1156         wlsc_input_device_start_grab(device, time,
1157                                      WLSC_DEVICE_GRAB_DRAG);
1158
1159         device->drag = drag;
1160         target = pick_surface(device, &sx, &sy);
1161         wl_drag_set_pointer_focus(device->drag, target, time,
1162                                   device->x, device->y, sx, sy);
1163 }
1164
1165 static void
1166 drag_cancel(struct wl_client *client, struct wl_drag *drag)
1167 {
1168         struct wlsc_input_device *device =
1169                 (struct wlsc_input_device *) drag->input_device;
1170
1171         if (drag->source == NULL || drag->source->client != client)
1172                 return;
1173
1174         wlsc_input_device_end_grab(device, get_time());
1175         device->drag = NULL;
1176 }
1177
1178 static const struct wl_drag_interface drag_interface = {
1179         drag_offer,
1180         drag_activate,
1181         drag_cancel,
1182 };
1183
1184 void
1185 wlsc_input_device_init(struct wlsc_input_device *device,
1186                        struct wlsc_compositor *ec)
1187 {
1188         device->base.base.interface = &wl_input_device_interface;
1189         device->base.base.implementation =
1190                 (void (**)(void)) &input_device_interface;
1191         wl_display_add_object(ec->wl_display, &device->base.base);
1192         wl_display_add_global(ec->wl_display, &device->base.base, NULL);
1193
1194         device->x = 100;
1195         device->y = 100;
1196         device->ec = ec;
1197         device->sprite = wlsc_surface_create(ec, &ec->argb_visual,
1198                                              device->x, device->y, 32, 32);
1199         device->hotspot_x = 16;
1200         device->hotspot_y = 16;
1201
1202         device->listener.func = handle_surface_destroy;
1203         wl_list_insert(ec->surface_destroy_listener_list.prev,
1204                        &device->listener.link);
1205         wl_list_insert(ec->input_device_list.prev, &device->link);
1206
1207         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1208 }
1209
1210 static void
1211 wlsc_output_post_geometry(struct wl_client *client, struct wl_object *global)
1212 {
1213         struct wlsc_output *output =
1214                 container_of(global, struct wlsc_output, base);
1215
1216         wl_client_post_event(client, global,
1217                              WL_OUTPUT_GEOMETRY,
1218                              output->width, output->height);
1219 }
1220
1221 static const char vertex_shader[] =
1222         "uniform mat4 proj;\n"
1223         "attribute vec4 position;\n"
1224         "attribute vec2 texcoord;\n"
1225         "varying vec2 v_texcoord;\n"
1226         "void main()\n"
1227         "{\n"
1228         "   gl_Position = proj * position;\n"
1229         "   v_texcoord = texcoord;\n"
1230         "}\n";
1231
1232 static const char fragment_shader[] =
1233         /* "precision mediump float;\n" */
1234         "varying vec2 v_texcoord;\n"
1235         "uniform sampler2D tex;\n"
1236         "void main()\n"
1237         "{\n"
1238         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1239         "}\n";
1240
1241 static int
1242 init_shaders(struct wlsc_compositor *ec)
1243 {
1244         GLuint v, f, program;
1245         const char *p;
1246         char msg[512];
1247         GLfloat vertices[4 * 5];
1248         GLint status;
1249
1250         p = vertex_shader;
1251         v = glCreateShader(GL_VERTEX_SHADER);
1252         glShaderSource(v, 1, &p, NULL);
1253         glCompileShader(v);
1254         glGetShaderiv(v, GL_COMPILE_STATUS, &status);
1255         if (!status) {
1256                 glGetShaderInfoLog(v, sizeof msg, NULL, msg);
1257                 fprintf(stderr, "vertex shader info: %s\n", msg);
1258                 return -1;
1259         }
1260
1261         p = fragment_shader;
1262         f = glCreateShader(GL_FRAGMENT_SHADER);
1263         glShaderSource(f, 1, &p, NULL);
1264         glCompileShader(f);
1265         glGetShaderiv(f, GL_COMPILE_STATUS, &status);
1266         if (!status) {
1267                 glGetShaderInfoLog(f, sizeof msg, NULL, msg);
1268                 fprintf(stderr, "fragment shader info: %s\n", msg);
1269                 return -1;
1270         }
1271
1272         program = glCreateProgram();
1273         glAttachShader(program, v);
1274         glAttachShader(program, f);
1275         glBindAttribLocation(program, 0, "position");
1276         glBindAttribLocation(program, 1, "texcoord");
1277
1278         glLinkProgram(program);
1279         glGetProgramiv(program, GL_LINK_STATUS, &status);
1280         if (!status) {
1281                 glGetProgramInfoLog(program, sizeof msg, NULL, msg);
1282                 fprintf(stderr, "link info: %s\n", msg);
1283                 return -1;
1284         }
1285
1286         glUseProgram(program);
1287         ec->proj_uniform = glGetUniformLocation(program, "proj");
1288         ec->tex_uniform = glGetUniformLocation(program, "tex");
1289
1290         vertices[ 0] = 0.0;
1291         vertices[ 1] = 0.0;
1292         vertices[ 2] = 0.0;
1293         vertices[ 3] = 0.0;
1294         vertices[ 4] = 0.0;
1295
1296         vertices[ 5] = 0.0;
1297         vertices[ 6] = 1.0;
1298         vertices[ 7] = 0.0;
1299         vertices[ 8] = 0.0;
1300         vertices[ 9] = 1.0;
1301
1302         vertices[10] = 1.0;
1303         vertices[11] = 0.0;
1304         vertices[12] = 0.0;
1305         vertices[13] = 1.0;
1306         vertices[14] = 0.0;
1307
1308         vertices[15] = 1.0;
1309         vertices[16] = 1.0;
1310         vertices[17] = 0.0;
1311         vertices[18] = 1.0;
1312         vertices[19] = 1.0;
1313
1314         glGenBuffers(1, &ec->vbo);
1315         glBindBuffer(GL_ARRAY_BUFFER, ec->vbo);
1316         glBufferData(GL_ARRAY_BUFFER, sizeof vertices, vertices, GL_STATIC_DRAW);
1317
1318         return 0;
1319 }
1320
1321 static const struct wl_interface visual_interface = {
1322         "visual", 1,
1323 };
1324
1325 static void
1326 add_visuals(struct wlsc_compositor *ec)
1327 {
1328         ec->argb_visual.base.interface = &visual_interface;
1329         ec->argb_visual.base.implementation = NULL;
1330         wl_display_add_object(ec->wl_display, &ec->argb_visual.base);
1331         wl_display_add_global(ec->wl_display, &ec->argb_visual.base, NULL);
1332
1333         ec->premultiplied_argb_visual.base.interface = &visual_interface;
1334         ec->premultiplied_argb_visual.base.implementation = NULL;
1335         wl_display_add_object(ec->wl_display,
1336                               &ec->premultiplied_argb_visual.base);
1337         wl_display_add_global(ec->wl_display,
1338                               &ec->premultiplied_argb_visual.base, NULL);
1339
1340         ec->rgb_visual.base.interface = &visual_interface;
1341         ec->rgb_visual.base.implementation = NULL;
1342         wl_display_add_object(ec->wl_display, &ec->rgb_visual.base);
1343         wl_display_add_global(ec->wl_display, &ec->rgb_visual.base, NULL);
1344 }
1345
1346 void
1347 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1348                  int x, int y, int width, int height)
1349 {
1350         output->compositor = c;
1351         output->x = x;
1352         output->y = y;
1353         output->width = width;
1354         output->height = height;
1355
1356         output->background =
1357                 background_create(output, option_background);
1358
1359         wlsc_matrix_init(&output->matrix);
1360         wlsc_matrix_translate(&output->matrix,
1361                               -output->x - output->width / 2.0,
1362                               -output->y - output->height / 2.0, 0);
1363         wlsc_matrix_scale(&output->matrix,
1364                           2.0 / output->width, 2.0 / output->height, 1);
1365
1366         output->base.interface = &wl_output_interface;
1367         wl_display_add_object(c->wl_display, &output->base);
1368         wl_display_add_global(c->wl_display, &output->base,
1369                               wlsc_output_post_geometry);
1370 }
1371
1372 int
1373 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1374 {
1375         struct wl_event_loop *loop;
1376
1377         ec->wl_display = display;
1378
1379         ec->base.base.interface = &wl_compositor_interface;
1380         ec->base.base.implementation =
1381                 (void (**)(void)) &compositor_interface;
1382
1383         wl_display_add_object(display, &ec->base.base);
1384         if (wl_display_add_global(display, &ec->base.base, NULL))
1385                 return -1;
1386
1387         ec->shell.base.interface = &wl_shell_interface;
1388         ec->shell.base.implementation = (void (**)(void)) &shell_interface;
1389         wl_display_add_object(display, &ec->shell.base);
1390         if (wl_display_add_global(display, &ec->shell.base, NULL))
1391                 return -1;
1392
1393         add_visuals(ec);
1394
1395         wl_list_init(&ec->surface_list);
1396         wl_list_init(&ec->input_device_list);
1397         wl_list_init(&ec->output_list);
1398         wl_list_init(&ec->surface_destroy_listener_list);
1399
1400         create_pointer_images(ec);
1401
1402         screenshooter_create(ec);
1403
1404         glGenFramebuffers(1, &ec->fbo);
1405         glBindFramebuffer(GL_FRAMEBUFFER, ec->fbo);
1406         glActiveTexture(GL_TEXTURE0);
1407         if (init_shaders(ec) < 0)
1408                 return -1;
1409
1410         loop = wl_display_get_event_loop(ec->wl_display);
1411         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1412         wlsc_compositor_schedule_repaint(ec);
1413
1414         return 0;
1415 }
1416
1417 /* The plan here is to generate a random anonymous socket name and
1418  * advertise that through a service on the session dbus.
1419  */
1420 static const char socket_name[] = "\0wayland";
1421
1422 int main(int argc, char *argv[])
1423 {
1424         struct wl_display *display;
1425         struct wlsc_compositor *ec;
1426         GError *error = NULL;
1427         GOptionContext *context;
1428
1429         g_type_init(); /* GdkPixbuf needs this, it seems. */
1430
1431         context = g_option_context_new(NULL);
1432         g_option_context_add_main_entries(context, option_entries, "Wayland");
1433         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1434                 fprintf(stderr, "option parsing failed: %s\n", error->message);
1435                 exit(EXIT_FAILURE);
1436         }
1437
1438         display = wl_display_create();
1439
1440         if (getenv("DISPLAY"))
1441                 ec = x11_compositor_create(display);
1442         else
1443                 ec = drm_compositor_create(display);
1444
1445         if (ec == NULL) {
1446                 fprintf(stderr, "failed to create compositor\n");
1447                 exit(EXIT_FAILURE);
1448         }
1449
1450         if (wl_display_add_socket(display, socket_name, sizeof socket_name)) {
1451                 fprintf(stderr, "failed to add socket: %m\n");
1452                 exit(EXIT_FAILURE);
1453         }
1454
1455         wl_display_run(display);
1456
1457         return 0;
1458 }