src/renderer-tiles.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  * Author: Vladimir Nadvornik
   8  *
   9  * This software is released under the GNU General Public License (GNU GPL).
  10  * Please read the included file COPYING for more information.
  11  * This software comes with no warranty of any kind, use at your own risk!
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <math.h>
  18
  19 #include "main.h"
  20 #include "pixbuf-renderer.h"
  21 #include "renderer-tiles.h"
  22
  23 #include "intl.h"
  24 #include "layout.h"
  25
  26 #include <gtk/gtk.h>
  27
  28
  29 /* comment this out if not using this from within Geeqie
  30  * defining GQ_BUILD does these things:
  31  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  32  */
  33 #define GQ_BUILD 1
  34
  35 #ifdef GQ_BUILD
  36 #include "main.h"
  37 #include "pixbuf_util.h"
  38 #include "exif.h"
  39 #else
  40 typedef enum {
  41         EXIF_ORIENTATION_UNKNOWN        = 0,
  42         EXIF_ORIENTATION_TOP_LEFT       = 1,
  43         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  44         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  45         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  46         EXIF_ORIENTATION_LEFT_TOP       = 5,
  47         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  48         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  49         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  50 } ExifOrientationType;
  51 #endif
  52
  53
  54 /* size to use when breaking up image pane for rendering */
  55 #define PR_TILE_SIZE 128
  56
  57 typedef struct _ImageTile ImageTile;
  58 typedef struct _QueueData QueueData;
  59
  60 struct _ImageTile
  61 {
  62         cairo_surface_t *surface;       /* off screen buffer */
  63         GdkPixbuf *pixbuf;      /* pixbuf area for zooming */
  64         gint x;                 /* x offset into image */
  65         gint y;                 /* y offset into image */
  66         gint w;                 /* width that is visible (may be less if at edge of image) */
  67         gint h;                 /* height '' */
  68
  69         gboolean blank;
  70
  71 /* render_todo: (explanation)
  72         NONE    do nothing
  73         AREA    render area of tile, usually only used when loading an image
  74                 note: will jump to an ALL if render_done is not ALL.
  75         ALL     render entire tile, if never done before w/ ALL, for expose events *only*
  76 */
  77
  78         ImageRenderType render_todo;    /* what to do (see above) */
  79         ImageRenderType render_done;    /* highest that has been done before on tile */
  80
  81         QueueData *qd;
  82         QueueData *qd2;
  83
  84         guint size;             /* est. memory used by pixmap and pixbuf */
  85 };
  86
  87 struct _QueueData
  88 {
  89         ImageTile *it;
  90         gint x;
  91         gint y;
  92         gint w;
  93         gint h;
  94         gboolean new_data;
  95 };
  96
  97 typedef struct _OverlayData OverlayData;
  98 struct _OverlayData
  99 {
 100         gint id;
 101
 102         GdkPixbuf *pixbuf;
 103         GdkWindow *window;
 104
 105         gint x;
 106         gint y;
 107
 108         OverlayRendererFlags flags;
 109 };
 110
 111 typedef struct _RendererTiles RendererTiles;
 112
 113 struct _RendererTiles
 114 {
 115         RendererFuncs f;
 116         PixbufRenderer *pr;
 117
 118         gint tile_cache_max;            /* max mb to use for offscreen buffer */
 119
 120         gint tile_width;
 121         gint tile_height;
 122         gint tile_cols;         /* count of tile columns */
 123         GList *tiles;           /* list of buffer tiles */
 124         gint tile_cache_size;   /* allocated size of pixmaps/pixbufs */
 125         GList *draw_queue;      /* list of areas to redraw */
 126         GList *draw_queue_2pass;/* list when 2 pass is enabled */
 127
 128         GList *overlay_list;
 129         cairo_surface_t *overlay_buffer;
 130
 131         guint draw_idle_id; /* event source id */
 132
 133         GdkPixbuf *spare_tile;
 134
 135         gint stereo_mode;
 136         gint stereo_off_x;
 137         gint stereo_off_y;
 138
 139         gint x_scroll;  /* allow local adjustment and mirroring */
 140         gint y_scroll;
 141
 142 };
 143
 144
 145
 146 static void rt_border_draw(RendererTiles *rt, gint x, gint y, gint w, gint h);
 147 static void rt_overlay_draw(RendererTiles *rt, gint x, gint y, gint w, gint h, ImageTile *it);
 148
 149
 150 static void rt_tile_free_all(RendererTiles *rt);
 151 static void rt_tile_invalidate_region(RendererTiles *rt, gint x, gint y, gint w, gint h);
 152 static gboolean rt_tile_is_visible(RendererTiles *rt, ImageTile *it);
 153 static void rt_queue_clear(RendererTiles *rt);
 154 static void rt_queue_merge(QueueData *parent, QueueData *qd);
 155 static void rt_queue(RendererTiles *rt, gint x, gint y, gint w, gint h,
 156                      gint clamp, ImageRenderType render, gboolean new_data, gboolean only_existing);
 157
 158 static void rt_hierarchy_changed_cb(GtkWidget *widget, GtkWidget *previous_toplevel, gpointer data);
 159 static gint rt_queue_draw_idle_cb(gpointer data);
 160
 161 #define GET_RIGHT_PIXBUF_OFFSET(rt) \
 162         (( (rt->stereo_mode & PR_STEREO_RIGHT) && !(rt->stereo_mode & PR_STEREO_SWAP)) || \
 163          (!(rt->stereo_mode & PR_STEREO_RIGHT) &&  (rt->stereo_mode & PR_STEREO_SWAP)) ?  \
 164           rt->pr->stereo_pixbuf_offset_right : rt->pr->stereo_pixbuf_offset_left )
 165
 166 #define GET_LEFT_PIXBUF_OFFSET(rt) \
 167         ((!(rt->stereo_mode & PR_STEREO_RIGHT) && !(rt->stereo_mode & PR_STEREO_SWAP)) || \
 168          ( (rt->stereo_mode & PR_STEREO_RIGHT) &&  (rt->stereo_mode & PR_STEREO_SWAP)) ?  \
 169           rt->pr->stereo_pixbuf_offset_right : rt->pr->stereo_pixbuf_offset_left )
 170
 171
 172 static void rt_sync_scroll(RendererTiles *rt)
 173 {
 174         PixbufRenderer *pr = rt->pr;
 175
 176         rt->x_scroll = (rt->stereo_mode & PR_STEREO_MIRROR) ?
 177                        pr->width - pr->vis_width - pr->x_scroll
 178                        : pr->x_scroll;
 179
 180         rt->y_scroll = (rt->stereo_mode & PR_STEREO_FLIP) ?
 181                        pr->height - pr->vis_height - pr->y_scroll
 182                        : pr->y_scroll;
 183 }
 184
 185 /*
 186  *-------------------------------------------------------------------
 187  * borders
 188  *-------------------------------------------------------------------
 189  */
 190
 191 static void rt_border_draw(RendererTiles *rt, gint x, gint y, gint w, gint h)
 192 {
 193         PixbufRenderer *pr = rt->pr;
 194         GtkWidget *box;
 195         GdkWindow *window;
 196         gint rx, ry, rw, rh;
 197         cairo_t *cr;
 198
 199         box = GTK_WIDGET(pr);
 200         window = gtk_widget_get_window(box);
 201
 202         if (!window) return;
 203
 204         cr = gdk_cairo_create(window);
 205
 206
 207         if (!pr->pixbuf && !pr->source_tiles_enabled)
 208                 {
 209                 if (pr_clip_region(x, y, w, h,
 210                                    0, 0,
 211                                    pr->viewport_width, pr->viewport_height,
 212                                    &rx, &ry, &rw, &rh))
 213                         {
 214                         cairo_set_source_rgb(cr, 0, 0, 0);
 215                         cairo_rectangle(cr, rx + rt->stereo_off_x, ry + rt->stereo_off_y, rw, rh);
 216                         cairo_fill(cr);
 217                         cairo_destroy(cr);
 218                         rt_overlay_draw(rt, rx, ry, rw, rh, NULL);
 219                         }
 220                 return;
 221                 }
 222
 223         if (pr->vis_width < pr->viewport_width)
 224                 {
 225                 if (pr->x_offset > 0 &&
 226                     pr_clip_region(x, y, w, h,
 227                                    0, 0,
 228                                    pr->x_offset, pr->viewport_height,
 229                                    &rx, &ry, &rw, &rh))
 230                         {
 231                         cairo_set_source_rgb(cr, 0, 0, 0);
 232                         cairo_rectangle(cr, rx + rt->stereo_off_x, ry + rt->stereo_off_y, rw, rh);
 233                         cairo_fill(cr);
 234                         rt_overlay_draw(rt, rx, ry, rw, rh, NULL);
 235                         }
 236                 if (pr->viewport_width - pr->vis_width - pr->x_offset > 0 &&
 237                     pr_clip_region(x, y, w, h,
 238                                    pr->x_offset + pr->vis_width, 0,
 239                                    pr->viewport_width - pr->vis_width - pr->x_offset, pr->viewport_height,
 240                                    &rx, &ry, &rw, &rh))
 241                         {
 242                         cairo_set_source_rgb(cr, 0, 0, 0);
 243                         cairo_rectangle(cr, rx + rt->stereo_off_x, ry + rt->stereo_off_y, rw, rh);
 244                         cairo_fill(cr);
 245                         rt_overlay_draw(rt, rx, ry, rw, rh, NULL);
 246                         }
 247                 }
 248         if (pr->vis_height < pr->viewport_height)
 249                 {
 250                 if (pr->y_offset > 0 &&
 251                     pr_clip_region(x, y, w, h,
 252                                    pr->x_offset, 0,
 253                                    pr->vis_width, pr->y_offset,
 254                                    &rx, &ry, &rw, &rh))
 255                         {
 256                         cairo_set_source_rgb(cr, 0, 0, 0);
 257                         cairo_rectangle(cr, rx + rt->stereo_off_x, ry + rt->stereo_off_y, rw, rh);
 258                         cairo_fill(cr);
 259                         rt_overlay_draw(rt, rx, ry, rw, rh, NULL);
 260                         }
 261                 if (pr->viewport_height - pr->vis_height - pr->y_offset > 0 &&
 262                     pr_clip_region(x, y, w, h,
 263                                    pr->x_offset, pr->y_offset + pr->vis_height,
 264                                    pr->vis_width, pr->viewport_height - pr->vis_height - pr->y_offset,
 265                                    &rx, &ry, &rw, &rh))
 266                         {
 267                         cairo_set_source_rgb(cr, 0, 0, 0);
 268                         cairo_rectangle(cr, rx + rt->stereo_off_x, ry + rt->stereo_off_y, rw, rh);
 269                         cairo_fill(cr);
 270                         rt_overlay_draw(rt, rx, ry, rw, rh, NULL);
 271                         }
 272                 }
 273         cairo_destroy(cr);
 274 }
 275
 276 static void rt_border_clear(RendererTiles *rt)
 277 {
 278         PixbufRenderer *pr = rt->pr;
 279         rt_border_draw(rt, 0, 0, pr->viewport_width, pr->viewport_height);
 280 }
 281
 282
 283 /*
 284  *-------------------------------------------------------------------
 285  * display tiles
 286  *-------------------------------------------------------------------
 287  */
 288
 289 static ImageTile *rt_tile_new(gint x, gint y, gint width, gint height)
 290 {
 291         ImageTile *it;
 292
 293         it = g_new0(ImageTile, 1);
 294
 295         it->x = x;
 296         it->y = y;
 297         it->w = width;
 298         it->h = height;
 299
 300         it->render_done = TILE_RENDER_NONE;
 301
 302         return it;
 303 }
 304
 305 static void rt_tile_free(ImageTile *it)
 306 {
 307         if (!it) return;
 308
 309         if (it->pixbuf) g_object_unref(it->pixbuf);
 310         if (it->surface) cairo_surface_destroy(it->surface);
 311
 312         g_free(it);
 313 }
 314
 315 static void rt_tile_free_all(RendererTiles *rt)
 316 {
 317         GList *work;
 318
 319         work = rt->tiles;
 320         while (work)
 321                 {
 322                 ImageTile *it;
 323
 324                 it = work->data;
 325                 work = work->next;
 326
 327                 rt_tile_free(it);
 328                 }
 329
 330         g_list_free(rt->tiles);
 331         rt->tiles = NULL;
 332         rt->tile_cache_size = 0;
 333 }
 334
 335 static ImageTile *rt_tile_add(RendererTiles *rt, gint x, gint y)
 336 {
 337         PixbufRenderer *pr = rt->pr;
 338         ImageTile *it;
 339
 340         it = rt_tile_new(x, y, rt->tile_width, rt->tile_height);
 341
 342         if (it->x + it->w > pr->width) it->w = pr->width - it->x;
 343         if (it->y + it->h > pr->height) it->h = pr->height - it->y;
 344
 345         rt->tiles = g_list_prepend(rt->tiles, it);
 346         rt->tile_cache_size += it->size;
 347
 348         return it;
 349 }
 350
 351 static void rt_tile_remove(RendererTiles *rt, ImageTile *it)
 352 {
 353         if (it->qd)
 354                 {
 355                 QueueData *qd = it->qd;
 356
 357                 it->qd = NULL;
 358                 rt->draw_queue = g_list_remove(rt->draw_queue, qd);
 359                 g_free(qd);
 360                 }
 361
 362         if (it->qd2)
 363                 {
 364                 QueueData *qd = it->qd2;
 365
 366                 it->qd2 = NULL;
 367                 rt->draw_queue_2pass = g_list_remove(rt->draw_queue_2pass, qd);
 368                 g_free(qd);
 369                 }
 370
 371         rt->tiles = g_list_remove(rt->tiles, it);
 372         rt->tile_cache_size -= it->size;
 373
 374         rt_tile_free(it);
 375 }
 376
 377 static void rt_tile_free_space(RendererTiles *rt, guint space, ImageTile *it)
 378 {
 379         PixbufRenderer *pr = rt->pr;
 380         GList *work;
 381         guint tile_max;
 382
 383         work = g_list_last(rt->tiles);
 384
 385         if (pr->source_tiles_enabled && pr->scale < 1.0)
 386                 {
 387                 gint tiles;
 388
 389                 tiles = (pr->vis_width / rt->tile_width + 1) * (pr->vis_height / rt->tile_height + 1);
 390                 tile_max = MAX(tiles * rt->tile_width * rt->tile_height * 3,
 391                                (gint)((gdouble)rt->tile_cache_max * 1048576.0 * pr->scale));
 392                 }
 393         else
 394                 {
 395                 tile_max = rt->tile_cache_max * 1048576;
 396                 }
 397
 398         while (work && rt->tile_cache_size + space > tile_max)
 399                 {
 400                 ImageTile *needle;
 401
 402                 needle = work->data;
 403                 work = work->prev;
 404                 if (needle != it &&
 405                     ((!needle->qd && !needle->qd2) || !rt_tile_is_visible(rt, needle))) rt_tile_remove(rt, needle);
 406                 }
 407 }
 408
 409 static void rt_tile_invalidate_all(RendererTiles *rt)
 410 {
 411         PixbufRenderer *pr = rt->pr;
 412         GList *work;
 413
 414         work = rt->tiles;
 415         while (work)
 416                 {
 417                 ImageTile *it;
 418
 419                 it = work->data;
 420                 work = work->next;
 421
 422                 it->render_done = TILE_RENDER_NONE;
 423                 it->render_todo = TILE_RENDER_ALL;
 424                 it->blank = FALSE;
 425
 426                 it->w = MIN(rt->tile_width, pr->width - it->x);
 427                 it->h = MIN(rt->tile_height, pr->height - it->y);
 428                 }
 429 }
 430
 431 static void rt_tile_invalidate_region(RendererTiles *rt, gint x, gint y, gint w, gint h)
 432 {
 433         gint x1, x2;
 434         gint y1, y2;
 435         GList *work;
 436
 437         x1 = ROUND_DOWN(x, rt->tile_width);
 438         x2 = ROUND_UP(x + w, rt->tile_width);
 439
 440         y1 = ROUND_DOWN(y, rt->tile_height);
 441         y2 = ROUND_UP(y + h, rt->tile_height);
 442
 443         work = rt->tiles;
 444         while (work)
 445                 {
 446                 ImageTile *it;
 447
 448                 it = work->data;
 449                 work = work->next;
 450
 451                 if (it->x < x2 && it->x + it->w > x1 &&
 452                     it->y < y2 && it->y + it->h > y1)
 453                         {
 454                         it->render_done = TILE_RENDER_NONE;
 455                         it->render_todo = TILE_RENDER_ALL;
 456                         }
 457                 }
 458 }
 459
 460 static ImageTile *rt_tile_get(RendererTiles *rt, gint x, gint y, gboolean only_existing)
 461 {
 462         GList *work;
 463
 464         work = rt->tiles;
 465         while (work)
 466                 {
 467                 ImageTile *it;
 468
 469                 it = work->data;
 470                 if (it->x == x && it->y == y)
 471                         {
 472                         rt->tiles = g_list_delete_link(rt->tiles, work);
 473                         rt->tiles = g_list_prepend(rt->tiles, it);
 474                         return it;
 475                         }
 476
 477                 work = work->next;
 478                 }
 479
 480         if (only_existing) return NULL;
 481
 482         return rt_tile_add(rt, x, y);
 483 }
 484
 485 static gint pixmap_calc_size(cairo_surface_t *surface)
 486 {
 487 //      gint w, h, d;
 488
 489 //      d = gdk_drawable_get_depth(pixmap);
 490 //      gdk_drawable_get_size(pixmap, &w, &h);
 491         return PR_TILE_SIZE * PR_TILE_SIZE * 4 / 8;
 492 }
 493
 494 static void rt_tile_prepare(RendererTiles *rt, ImageTile *it)
 495 {
 496         PixbufRenderer *pr = rt->pr;
 497         if (!it->surface)
 498                 {
 499                 cairo_surface_t *surface;
 500                 guint size;
 501
 502                 surface = gdk_window_create_similar_surface(gtk_widget_get_window((GtkWidget *)pr),
 503                                                             CAIRO_CONTENT_COLOR,
 504                                                             rt->tile_width, rt->tile_height);
 505
 506                 size = pixmap_calc_size(surface);
 507                 rt_tile_free_space(rt, size, it);
 508
 509                 it->surface = surface;
 510                 it->size += size;
 511                 rt->tile_cache_size += size;
 512                 }
 513
 514         if (!it->pixbuf)
 515                 {
 516                 GdkPixbuf *pixbuf;
 517                 guint size;
 518                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, rt->tile_width, rt->tile_height);
 519
 520                 size = gdk_pixbuf_get_rowstride(pixbuf) * rt->tile_height;
 521                 rt_tile_free_space(rt, size, it);
 522
 523                 it->pixbuf = pixbuf;
 524                 it->size += size;
 525                 rt->tile_cache_size += size;
 526                 }
 527 }
 528
 529 /*
 530  *-------------------------------------------------------------------
 531  * overlays
 532  *-------------------------------------------------------------------
 533  */
 534
 535 static void rt_overlay_get_position(RendererTiles *rt, OverlayData *od,
 536                                     gint *x, gint *y, gint *w, gint *h)
 537 {
 538         PixbufRenderer *pr = rt->pr;
 539         gint px, py, pw, ph;
 540
 541         pw = gdk_pixbuf_get_width(od->pixbuf);
 542         ph = gdk_pixbuf_get_height(od->pixbuf);
 543         px = od->x;
 544         py = od->y;
 545
 546         if (od->flags & OVL_RELATIVE)
 547                 {
 548                 if (px < 0) px = pr->viewport_width - pw + px;
 549                 if (py < 0) py = pr->viewport_height - ph + py;
 550                 }
 551
 552         if (x) *x = px;
 553         if (y) *y = py;
 554         if (w) *w = pw;
 555         if (h) *h = ph;
 556 }
 557
 558 static void rt_overlay_init_window(RendererTiles *rt, OverlayData *od)
 559 {
 560         PixbufRenderer *pr = rt->pr;
 561         gint px, py, pw, ph;
 562         GdkWindowAttr attributes;
 563         gint attributes_mask;
 564
 565         rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 566
 567         attributes.window_type = GDK_WINDOW_CHILD;
 568         attributes.wclass = GDK_INPUT_OUTPUT;
 569         attributes.width = pw;
 570         attributes.height = ph;
 571         attributes.event_mask = GDK_EXPOSURE_MASK;
 572         attributes_mask = 0;
 573
 574         od->window = gdk_window_new(gtk_widget_get_window(GTK_WIDGET(pr)), &attributes, attributes_mask);
 575         gdk_window_set_user_data(od->window, pr);
 576         gdk_window_move(od->window, px + rt->stereo_off_x, py + rt->stereo_off_y);
 577         gdk_window_show(od->window);
 578 }
 579
 580 static void rt_overlay_draw(RendererTiles *rt, gint x, gint y, gint w, gint h,
 581                             ImageTile *it)
 582 {
 583         PixbufRenderer *pr = rt->pr;
 584         GList *work;
 585
 586         work = rt->overlay_list;
 587         while (work)
 588                 {
 589                 OverlayData *od;
 590                 gint px, py, pw, ph;
 591                 gint rx, ry, rw, rh;
 592
 593                 od = work->data;
 594                 work = work->next;
 595
 596                 if (!od->window) rt_overlay_init_window(rt, od);
 597
 598                 rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 599                 if (pr_clip_region(x, y, w, h, px, py, pw, ph, &rx, &ry, &rw, &rh))
 600                         {
 601                         if (!rt->overlay_buffer)
 602                                 {
 603                                 rt->overlay_buffer = gdk_window_create_similar_surface(gtk_widget_get_window((GtkWidget *)pr),
 604                                                             CAIRO_CONTENT_COLOR,
 605                                                             rt->tile_width, rt->tile_height);
 606                                 }
 607
 608                         if (it)
 609                                 {
 610                                 cairo_t *cr;
 611
 612                                 cr = cairo_create(rt->overlay_buffer);
 613                                 cairo_set_source_surface(cr, it->surface, (pr->x_offset + (it->x - rt->x_scroll)) - rx, (pr->y_offset + (it->y - rt->y_scroll)) - ry);
 614                                 cairo_rectangle(cr, 0, 0, rw, rh);
 615                                 cairo_fill_preserve(cr);
 616
 617                                 gdk_cairo_set_source_pixbuf(cr, od->pixbuf, px - rx, py - ry);
 618                                 cairo_fill (cr);
 619                                 cairo_destroy (cr);
 620
 621                                 cr = gdk_cairo_create(od->window);
 622                                 cairo_set_source_surface(cr, rt->overlay_buffer, rx - px, ry - py);
 623                                 cairo_rectangle (cr, rx - px, ry - py, rw, rh);
 624                                 cairo_fill (cr);
 625                                 cairo_destroy (cr);
 626                                 }
 627                         else
 628                                 {
 629                                 /* no ImageTile means region may be larger than our scratch buffer */
 630                                 gint sx, sy;
 631
 632                                 for (sx = rx; sx < rx + rw; sx += rt->tile_width)
 633                                     for (sy = ry; sy < ry + rh; sy += rt->tile_height)
 634                                         {
 635                                         gint sw, sh;
 636                                         cairo_t *cr;
 637
 638                                         sw = MIN(rx + rw - sx, rt->tile_width);
 639                                         sh = MIN(ry + rh - sy, rt->tile_height);
 640
 641                                         cr = cairo_create(rt->overlay_buffer);
 642                                         cairo_set_source_rgb(cr, 0, 0, 0);
 643                                         cairo_rectangle(cr, 0, 0, sw, sh);
 644                                         cairo_fill_preserve(cr);
 645
 646                                         gdk_cairo_set_source_pixbuf(cr, od->pixbuf, px - sx, py - sy);
 647                                         cairo_fill (cr);
 648                                         cairo_destroy (cr);
 649
 650                                         cr = gdk_cairo_create(od->window);
 651                                         cairo_set_source_surface(cr, rt->overlay_buffer, sx - px, sy - py);
 652                                         cairo_rectangle (cr, sx - px, sy - py, sw, sh);
 653                                         cairo_fill(cr);
 654                                         cairo_destroy(cr);
 655                                         }
 656                                 }
 657                         }
 658                 }
 659 }
 660
 661 static void rt_overlay_queue_draw(RendererTiles *rt, OverlayData *od, gint x1, gint y1, gint x2, gint y2)
 662 {
 663         PixbufRenderer *pr = rt->pr;
 664         gint x, y, w, h;
 665
 666         rt_overlay_get_position(rt, od, &x, &y, &w, &h);
 667
 668         /* add borders */
 669         x -= x1;
 670         y -= y1;
 671         w += x1 + x2;
 672         h += y1 + y2;
 673
 674         rt_queue(rt, rt->x_scroll - pr->x_offset + x,
 675                  rt->y_scroll - pr->y_offset + y,
 676                  w, h,
 677                  FALSE, TILE_RENDER_ALL, FALSE, FALSE);
 678
 679         rt_border_draw(rt, x, y, w, h);
 680 }
 681
 682 static void rt_overlay_queue_all(RendererTiles *rt, gint x1, gint y1, gint x2, gint y2)
 683 {
 684         GList *work;
 685
 686         work = rt->overlay_list;
 687         while (work)
 688                 {
 689                 OverlayData *od = work->data;
 690                 work = work->next;
 691
 692                 rt_overlay_queue_draw(rt, od, x1, y1, x2, y2);
 693                 }
 694 }
 695
 696 static void rt_overlay_update_sizes(RendererTiles *rt)
 697 {
 698         GList *work;
 699
 700         work = rt->overlay_list;
 701         while (work)
 702                 {
 703                 OverlayData *od = work->data;
 704                 work = work->next;
 705
 706                 if (!od->window) rt_overlay_init_window(rt, od);
 707
 708                 if (od->flags & OVL_RELATIVE)
 709                         {
 710                         gint x, y, w, h;
 711
 712                         rt_overlay_get_position(rt, od, &x, &y, &w, &h);
 713                         gdk_window_move_resize(od->window, x + rt->stereo_off_x, y + rt->stereo_off_y, w, h);
 714                         }
 715                 }
 716 }
 717
 718 static OverlayData *rt_overlay_find(RendererTiles *rt, gint id)
 719 {
 720         GList *work;
 721
 722         work = rt->overlay_list;
 723         while (work)
 724                 {
 725                 OverlayData *od = work->data;
 726                 work = work->next;
 727
 728                 if (od->id == id) return od;
 729                 }
 730
 731         return NULL;
 732 }
 733
 734
 735 gint renderer_tiles_overlay_add(void *renderer, GdkPixbuf *pixbuf, gint x, gint y,
 736                                  OverlayRendererFlags flags)
 737 {
 738         RendererTiles *rt = (RendererTiles *) renderer;
 739         PixbufRenderer *pr = rt->pr;
 740         OverlayData *od;
 741         gint id;
 742
 743         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), -1);
 744         g_return_val_if_fail(pixbuf != NULL, -1);
 745
 746         id = 1;
 747         while (rt_overlay_find(rt, id)) id++;
 748
 749         od = g_new0(OverlayData, 1);
 750         od->id = id;
 751         od->pixbuf = pixbuf;
 752         g_object_ref(G_OBJECT(od->pixbuf));
 753         od->x = x;
 754         od->y = y;
 755         od->flags = flags;
 756
 757         rt_overlay_init_window(rt, od);
 758
 759         rt->overlay_list = g_list_append(rt->overlay_list, od);
 760
 761         rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 762
 763         return od->id;
 764 }
 765
 766 static void rt_overlay_free(RendererTiles *rt, OverlayData *od)
 767 {
 768         rt->overlay_list = g_list_remove(rt->overlay_list, od);
 769
 770         if (od->pixbuf) g_object_unref(G_OBJECT(od->pixbuf));
 771         if (od->window) gdk_window_destroy(od->window);
 772         g_free(od);
 773
 774         if (!rt->overlay_list && rt->overlay_buffer)
 775                 {
 776                 cairo_surface_destroy(rt->overlay_buffer);
 777                 rt->overlay_buffer = NULL;
 778                 }
 779 }
 780
 781 static void rt_overlay_list_clear(RendererTiles *rt)
 782 {
 783         while (rt->overlay_list)
 784                 {
 785                 OverlayData *od;
 786
 787                 od = rt->overlay_list->data;
 788                 rt_overlay_free(rt, od);
 789                 }
 790 }
 791
 792 static void rt_overlay_list_reset_window(RendererTiles *rt)
 793 {
 794         GList *work;
 795
 796         if (rt->overlay_buffer) cairo_surface_destroy(rt->overlay_buffer);
 797         rt->overlay_buffer = NULL;
 798
 799         work = rt->overlay_list;
 800         while (work)
 801                 {
 802                 OverlayData *od = work->data;
 803                 work = work->next;
 804                 if (od->window) gdk_window_destroy(od->window);
 805                 od->window = NULL;
 806                 }
 807 }
 808
 809 void renderer_tiles_overlay_set(void *renderer, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 810 {
 811         RendererTiles *rt = (RendererTiles *) renderer;
 812         PixbufRenderer *pr = rt->pr;
 813         OverlayData *od;
 814
 815         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 816
 817         od = rt_overlay_find(rt, id);
 818         if (!od) return;
 819
 820         if (pixbuf)
 821                 {
 822                 gint px, py, pw, ph;
 823
 824                 g_object_ref(G_OBJECT(pixbuf));
 825                 g_object_unref(G_OBJECT(od->pixbuf));
 826                 od->pixbuf = pixbuf;
 827
 828                 od->x = x;
 829                 od->y = y;
 830
 831                 if (!od->window) rt_overlay_init_window(rt, od);
 832
 833                 rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 834                 rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 835                 gdk_window_move_resize(od->window, px + rt->stereo_off_x, py + rt->stereo_off_y, pw, ph);
 836                 }
 837         else
 838                 {
 839                 rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 840                 rt_overlay_free(rt, od);
 841                 }
 842 }
 843
 844 gboolean renderer_tiles_overlay_get(void *renderer, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 845 {
 846         RendererTiles *rt = (RendererTiles *) renderer;
 847         PixbufRenderer *pr = rt->pr;
 848         OverlayData *od;
 849
 850         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
 851
 852         od = rt_overlay_find(rt, id);
 853         if (!od) return FALSE;
 854
 855         if (pixbuf) *pixbuf = od->pixbuf;
 856         if (x) *x = od->x;
 857         if (y) *y = od->y;
 858
 859         return TRUE;
 860 }
 861
 862 static void rt_hierarchy_changed_cb(GtkWidget *widget, GtkWidget *previous_toplevel, gpointer data)
 863 {
 864         RendererTiles *rt = data;
 865         rt_overlay_list_reset_window(rt);
 866 }
 867
 868 /*
 869  *-------------------------------------------------------------------
 870  * drawing
 871  *-------------------------------------------------------------------
 872  */
 873
 874 static GdkPixbuf *rt_get_spare_tile(RendererTiles *rt)
 875 {
 876         if (!rt->spare_tile) rt->spare_tile = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, rt->tile_width, rt->tile_height);
 877         return rt->spare_tile;
 878 }
 879
 880 #define COLOR_BYTES 3   /* rgb */
 881
 882 static void rt_tile_rotate_90_clockwise(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 883 {
 884         GdkPixbuf *src = *tile;
 885         GdkPixbuf *dest;
 886         gint srs, drs;
 887         guchar *s_pix, *d_pix;
 888         guchar *sp, *dp;
 889         guchar *ip, *spi, *dpi;
 890         gint i, j;
 891         gint tw = rt->tile_width;
 892
 893         srs = gdk_pixbuf_get_rowstride(src);
 894         s_pix = gdk_pixbuf_get_pixels(src);
 895         spi = s_pix + (x * COLOR_BYTES);
 896
 897         dest = rt_get_spare_tile(rt);
 898         drs = gdk_pixbuf_get_rowstride(dest);
 899         d_pix = gdk_pixbuf_get_pixels(dest);
 900         dpi = d_pix + (tw - 1) * COLOR_BYTES;
 901
 902         for (i = y; i < y + h; i++)
 903                 {
 904                 sp = spi + (i * srs);
 905                 ip = dpi - (i * COLOR_BYTES);
 906                 for (j = x; j < x + w; j++)
 907                         {
 908                         dp = ip + (j * drs);
 909                         memcpy(dp, sp, COLOR_BYTES);
 910                         sp += COLOR_BYTES;
 911                         }
 912                 }
 913
 914         rt->spare_tile = src;
 915         *tile = dest;
 916 }
 917
 918 static void rt_tile_rotate_90_counter_clockwise(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 919 {
 920         GdkPixbuf *src = *tile;
 921         GdkPixbuf *dest;
 922         gint srs, drs;
 923         guchar *s_pix, *d_pix;
 924         guchar *sp, *dp;
 925         guchar *ip, *spi, *dpi;
 926         gint i, j;
 927         gint th = rt->tile_height;
 928
 929         srs = gdk_pixbuf_get_rowstride(src);
 930         s_pix = gdk_pixbuf_get_pixels(src);
 931         spi = s_pix + (x * COLOR_BYTES);
 932
 933         dest = rt_get_spare_tile(rt);
 934         drs = gdk_pixbuf_get_rowstride(dest);
 935         d_pix = gdk_pixbuf_get_pixels(dest);
 936         dpi = d_pix + (th - 1) * drs;
 937
 938         for (i = y; i < y + h; i++)
 939                 {
 940                 sp = spi + (i * srs);
 941                 ip = dpi + (i * COLOR_BYTES);
 942                 for (j = x; j < x + w; j++)
 943                         {
 944                         dp = ip - (j * drs);
 945                         memcpy(dp, sp, COLOR_BYTES);
 946                         sp += COLOR_BYTES;
 947                         }
 948                 }
 949
 950         rt->spare_tile = src;
 951         *tile = dest;
 952 }
 953
 954 static void rt_tile_mirror_only(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 955 {
 956         GdkPixbuf *src = *tile;
 957         GdkPixbuf *dest;
 958         gint srs, drs;
 959         guchar *s_pix, *d_pix;
 960         guchar *sp, *dp;
 961         guchar *spi, *dpi;
 962         gint i, j;
 963
 964         gint tw = rt->tile_width;
 965
 966         srs = gdk_pixbuf_get_rowstride(src);
 967         s_pix = gdk_pixbuf_get_pixels(src);
 968         spi = s_pix + (x * COLOR_BYTES);
 969
 970         dest = rt_get_spare_tile(rt);
 971         drs = gdk_pixbuf_get_rowstride(dest);
 972         d_pix = gdk_pixbuf_get_pixels(dest);
 973         dpi =  d_pix + (tw - x - 1) * COLOR_BYTES;
 974
 975         for (i = y; i < y + h; i++)
 976                 {
 977                 sp = spi + (i * srs);
 978                 dp = dpi + (i * drs);
 979                 for (j = 0; j < w; j++)
 980                         {
 981                         memcpy(dp, sp, COLOR_BYTES);
 982                         sp += COLOR_BYTES;
 983                         dp -= COLOR_BYTES;
 984                         }
 985                 }
 986
 987         rt->spare_tile = src;
 988         *tile = dest;
 989 }
 990
 991 static void rt_tile_mirror_and_flip(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 992 {
 993         GdkPixbuf *src = *tile;
 994         GdkPixbuf *dest;
 995         gint srs, drs;
 996         guchar *s_pix, *d_pix;
 997         guchar *sp, *dp;
 998         guchar *dpi;
 999         gint i, j;
1000         gint tw = rt->tile_width;
1001         gint th = rt->tile_height;
1002
1003         srs = gdk_pixbuf_get_rowstride(src);
1004         s_pix = gdk_pixbuf_get_pixels(src);
1005
1006         dest = rt_get_spare_tile(rt);
1007         drs = gdk_pixbuf_get_rowstride(dest);
1008         d_pix = gdk_pixbuf_get_pixels(dest);
1009         dpi = d_pix + (th - 1) * drs + (tw - 1) * COLOR_BYTES;
1010
1011         for (i = y; i < y + h; i++)
1012                 {
1013                 sp = s_pix + (i * srs) + (x * COLOR_BYTES);
1014                 dp = dpi - (i * drs) - (x * COLOR_BYTES);
1015                 for (j = 0; j < w; j++)
1016                         {
1017                         memcpy(dp, sp, COLOR_BYTES);
1018                         sp += COLOR_BYTES;
1019                         dp -= COLOR_BYTES;
1020                         }
1021                 }
1022
1023         rt->spare_tile = src;
1024         *tile = dest;
1025 }
1026
1027 static void rt_tile_flip_only(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
1028 {
1029         GdkPixbuf *src = *tile;
1030         GdkPixbuf *dest;
1031         gint srs, drs;
1032         guchar *s_pix, *d_pix;
1033         guchar *sp, *dp;
1034         guchar *spi, *dpi;
1035         gint i;
1036         gint th = rt->tile_height;
1037
1038         srs = gdk_pixbuf_get_rowstride(src);
1039         s_pix = gdk_pixbuf_get_pixels(src);
1040         spi = s_pix + (x * COLOR_BYTES);
1041
1042         dest = rt_get_spare_tile(rt);
1043         drs = gdk_pixbuf_get_rowstride(dest);
1044         d_pix = gdk_pixbuf_get_pixels(dest);
1045         dpi = d_pix + (th - 1) * drs + (x * COLOR_BYTES);
1046
1047         for (i = y; i < y + h; i++)
1048                 {
1049                 sp = spi + (i * srs);
1050                 dp = dpi - (i * drs);
1051                 memcpy(dp, sp, w * COLOR_BYTES);
1052                 }
1053
1054         rt->spare_tile = src;
1055         *tile = dest;
1056 }
1057
1058 static void rt_tile_apply_orientation(RendererTiles *rt, gint orientation, GdkPixbuf **pixbuf, gint x, gint y, gint w, gint h)
1059 {
1060         switch (orientation)
1061                 {
1062                 case EXIF_ORIENTATION_TOP_LEFT:
1063                         /* normal -- nothing to do */
1064                         break;
1065                 case EXIF_ORIENTATION_TOP_RIGHT:
1066                         /* mirrored */
1067                         {
1068                                 rt_tile_mirror_only(rt, pixbuf, x, y, w, h);
1069                         }
1070                         break;
1071                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1072                         /* upside down */
1073                         {
1074                                 rt_tile_mirror_and_flip(rt, pixbuf, x, y, w, h);
1075                         }
1076                         break;
1077                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1078                         /* flipped */
1079                         {
1080                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1081                         }
1082                         break;
1083                 case EXIF_ORIENTATION_LEFT_TOP:
1084                         {
1085                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1086                                 rt_tile_rotate_90_clockwise(rt, pixbuf, x, rt->tile_height - y - h, w, h);
1087                         }
1088                         break;
1089                 case EXIF_ORIENTATION_RIGHT_TOP:
1090                         /* rotated -90 (270) */
1091                         {
1092                                 rt_tile_rotate_90_clockwise(rt, pixbuf, x, y, w, h);
1093                         }
1094                         break;
1095                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1096                         {
1097                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1098                                 rt_tile_rotate_90_counter_clockwise(rt, pixbuf, x, rt->tile_height - y - h, w, h);
1099                         }
1100                         break;
1101                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1102                         /* rotated 90 */
1103                         {
1104                                 rt_tile_rotate_90_counter_clockwise(rt, pixbuf, x, y, w, h);
1105                         }
1106                         break;
1107                 default:
1108                         /* The other values are out of range */
1109                         break;
1110                 }
1111 }
1112
1113 static gboolean rt_source_tile_render(RendererTiles *rt, ImageTile *it,
1114                                       gint x, gint y, gint w, gint h,
1115                                       gboolean new_data, gboolean fast)
1116 {
1117         PixbufRenderer *pr = rt->pr;
1118         GList *list;
1119         GList *work;
1120         gboolean draw = FALSE;
1121
1122         if (pr->zoom == 1.0 || pr->scale == 1.0)
1123                 {
1124                 list = pr_source_tile_compute_region(pr, it->x + x, it->y + y, w, h, TRUE);
1125                 work = list;
1126                 while (work)
1127                         {
1128                         SourceTile *st;
1129                         gint rx, ry, rw, rh;
1130
1131                         st = work->data;
1132                         work = work->next;
1133
1134                         if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1135                                            it->x + x, it->y + y, w, h,
1136                                            &rx, &ry, &rw, &rh))
1137                                 {
1138                                 cairo_t *cr;
1139                                 cr = cairo_create(it->surface);
1140                                 cairo_rectangle (cr, rx - it->x, ry - it->y, rw, rh);
1141
1142                                 if (st->blank)
1143                                         {
1144                                         cairo_set_source_rgb(cr, 0, 0, 0);
1145                                         }
1146                                 else /* (pr->zoom == 1.0 || pr->scale == 1.0) */
1147                                         {
1148                                         gdk_cairo_set_source_pixbuf(cr, st->pixbuf, -it->x + st->x, -it->y + st->y);
1149                                         }
1150                                 cairo_fill (cr);
1151                                 cairo_destroy (cr);
1152                                 }
1153                         }
1154                 }
1155         else
1156                 {
1157                 gdouble scale_x, scale_y;
1158                 gint sx, sy, sw, sh;
1159
1160                 if (pr->image_width == 0 || pr->image_height == 0) return FALSE;
1161                 scale_x = (gdouble)pr->width / pr->image_width;
1162                 scale_y = (gdouble)pr->height / pr->image_height;
1163
1164                 sx = (gdouble)(it->x + x) / scale_x;
1165                 sy = (gdouble)(it->y + y) / scale_y;
1166                 sw = (gdouble)w / scale_x;
1167                 sh = (gdouble)h / scale_y;
1168
1169                 if (pr->width < PR_MIN_SCALE_SIZE || pr->height < PR_MIN_SCALE_SIZE) fast = TRUE;
1170
1171 #if 0
1172                 /* draws red over draw region, to check for leaks (regions not filled) */
1173                 pixbuf_set_rect_fill(it->pixbuf, x, y, w, h, 255, 0, 0, 255);
1174 #endif
1175
1176                 list = pr_source_tile_compute_region(pr, sx, sy, sw, sh, TRUE);
1177                 work = list;
1178                 while (work)
1179                         {
1180                         SourceTile *st;
1181                         gint rx, ry, rw, rh;
1182                         gint stx, sty, stw, sth;
1183
1184                         st = work->data;
1185                         work = work->next;
1186
1187                         stx = floor((gdouble)st->x * scale_x);
1188                         sty = floor((gdouble)st->y * scale_y);
1189                         stw = ceil((gdouble)(st->x + pr->source_tile_width) * scale_x) - stx;
1190                         sth = ceil((gdouble)(st->y + pr->source_tile_height) * scale_y) - sty;
1191
1192                         if (pr_clip_region(stx, sty, stw, sth,
1193                                            it->x + x, it->y + y, w, h,
1194                                            &rx, &ry, &rw, &rh))
1195                                 {
1196
1197                                 if (st->blank)
1198                                         {
1199                                         cairo_t *cr;
1200                                         cr = cairo_create(it->surface);
1201                                         cairo_rectangle (cr, rx - st->x, ry - st->y, rw, rh);
1202                                         cairo_set_source_rgb(cr, 0, 0, 0);
1203                                         cairo_fill (cr);
1204                                         cairo_destroy (cr);
1205                                         }
1206                                 else
1207                                         {
1208                                         gdouble offset_x;
1209                                         gdouble offset_y;
1210
1211                                         /* may need to use unfloored stx,sty values here */
1212                                         offset_x = (gdouble)(stx - it->x);
1213                                         offset_y = (gdouble)(sty - it->y);
1214
1215                                         gdk_pixbuf_scale(st->pixbuf, it->pixbuf, rx - it->x, ry - it->y, rw, rh,
1216                                                  (gdouble) 0.0 + offset_x,
1217                                                  (gdouble) 0.0 + offset_y,
1218                                                  scale_x, scale_y,
1219                                                  (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality);
1220                                         draw = TRUE;
1221                                         }
1222                                 }
1223                         }
1224                 }
1225
1226         g_list_free(list);
1227
1228         return draw;
1229 }
1230
1231 static void rt_tile_get_region(gboolean has_alpha,
1232                                const GdkPixbuf *src, GdkPixbuf *dest,
1233                                int pb_x, int pb_y, int pb_w, int pb_h,
1234                                double offset_x, double offset_y, double scale_x, double scale_y,
1235                                GdkInterpType interp_type,
1236                                int check_x, int check_y)
1237 {
1238         if (!has_alpha)
1239                 {
1240                 if (scale_x == 1.0 && scale_y == 1.0)
1241                         {
1242                         gdk_pixbuf_copy_area(src,
1243                                              -offset_x + pb_x, -offset_y + pb_y,
1244                                              pb_w, pb_h,
1245                                              dest,
1246                                              pb_x, pb_y);
1247                         }
1248                 else
1249                         {
1250                         gdk_pixbuf_scale(src, dest,
1251                                          pb_x, pb_y, pb_w, pb_h,
1252                                          offset_x,
1253                                          offset_y,
1254                                          scale_x, scale_y,
1255                                          interp_type);
1256                         }
1257                 }
1258         else
1259                 {
1260                 gdk_pixbuf_composite_color(src, dest,
1261                                          pb_x, pb_y, pb_w, pb_h,
1262                                          offset_x,
1263                                          offset_y,
1264                                          scale_x, scale_y,
1265                                          interp_type,
1266                                          255, check_x, check_y,
1267                                          PR_ALPHA_CHECK_SIZE, PR_ALPHA_CHECK1, PR_ALPHA_CHECK2);
1268                 }
1269 }
1270
1271
1272 static gint rt_get_orientation(RendererTiles *rt)
1273 {
1274         PixbufRenderer *pr = rt->pr;
1275
1276         gint orientation = pr->orientation;
1277         static const gint mirror[]       = {1,   2, 1, 4, 3, 6, 5, 8, 7};
1278         static const gint flip[]         = {1,   4, 3, 2, 1, 8, 7, 6, 5};
1279
1280         if (rt->stereo_mode & PR_STEREO_MIRROR) orientation = mirror[orientation];
1281         if (rt->stereo_mode & PR_STEREO_FLIP) orientation = flip[orientation];
1282         return orientation;
1283 }
1284
1285
1286 static void rt_tile_render(RendererTiles *rt, ImageTile *it,
1287                            gint x, gint y, gint w, gint h,
1288                            gboolean new_data, gboolean fast)
1289 {
1290         PixbufRenderer *pr = rt->pr;
1291         gboolean has_alpha;
1292         gboolean draw = FALSE;
1293         gint orientation = rt_get_orientation(rt);
1294
1295         if (it->render_todo == TILE_RENDER_NONE && it->surface && !new_data) return;
1296
1297         if (it->render_done != TILE_RENDER_ALL)
1298                 {
1299                 x = 0;
1300                 y = 0;
1301                 w = it->w;
1302                 h = it->h;
1303                 if (!fast) it->render_done = TILE_RENDER_ALL;
1304                 }
1305         else if (it->render_todo != TILE_RENDER_AREA)
1306                 {
1307                 if (!fast) it->render_todo = TILE_RENDER_NONE;
1308                 return;
1309                 }
1310
1311         if (!fast) it->render_todo = TILE_RENDER_NONE;
1312
1313         if (new_data) it->blank = FALSE;
1314
1315         rt_tile_prepare(rt, it);
1316         has_alpha = (pr->pixbuf && gdk_pixbuf_get_has_alpha(pr->pixbuf));
1317
1318         /* FIXME checker colors for alpha should be configurable,
1319          * also should be drawn for blank = TRUE
1320          */
1321
1322         if (it->blank)
1323                 {
1324                 /* no data, do fast rect fill */
1325                 cairo_t *cr;
1326                 cr = cairo_create(it->surface);
1327                 cairo_rectangle (cr, 0, 0, it->w, it->h);
1328                 cairo_set_source_rgb(cr, 0, 0, 0);
1329                 cairo_fill (cr);
1330                 cairo_destroy (cr);
1331                 }
1332         else if (pr->source_tiles_enabled)
1333                 {
1334                 draw = rt_source_tile_render(rt, it, x, y, w, h, new_data, fast);
1335                 }
1336         else
1337                 {
1338                 gdouble scale_x, scale_y;
1339                 gdouble src_x, src_y;
1340                 gint pb_x, pb_y;
1341                 gint pb_w, pb_h;
1342
1343                 if (pr->image_width == 0 || pr->image_height == 0) return;
1344
1345                 scale_x = (gdouble)pr->width / pr->image_width;
1346                 scale_y = (gdouble)pr->height / pr->image_height;
1347
1348                 pr_tile_coords_map_orientation(orientation, it->x, it->y,
1349                                             pr->width, pr->height,
1350                                             rt->tile_width, rt->tile_height,
1351                                             &src_x, &src_y);
1352                 pr_tile_region_map_orientation(orientation, x, y,
1353                                             rt->tile_width, rt->tile_height,
1354                                             w, h,
1355                                             &pb_x, &pb_y,
1356                                             &pb_w, &pb_h);
1357
1358                 switch (orientation)
1359                         {
1360                         gdouble tmp;
1361                         case EXIF_ORIENTATION_LEFT_TOP:
1362                         case EXIF_ORIENTATION_RIGHT_TOP:
1363                         case EXIF_ORIENTATION_RIGHT_BOTTOM:
1364                         case EXIF_ORIENTATION_LEFT_BOTTOM:
1365                                 tmp = scale_x;
1366                                 scale_x = scale_y;
1367                                 scale_y = tmp;
1368                                 break;
1369                         default:
1370                                 /* nothing to do */
1371                                 break;
1372                         }
1373
1374                 /* HACK: The pixbuf scalers get kinda buggy(crash) with extremely
1375                  * small sizes for anything but GDK_INTERP_NEAREST
1376                  */
1377                 if (pr->width < PR_MIN_SCALE_SIZE || pr->height < PR_MIN_SCALE_SIZE) fast = TRUE;
1378
1379                 rt_tile_get_region(has_alpha,
1380                                    pr->pixbuf, it->pixbuf, pb_x, pb_y, pb_w, pb_h,
1381                                    (gdouble) 0.0 - src_x - GET_RIGHT_PIXBUF_OFFSET(rt) * scale_x,
1382                                    (gdouble) 0.0 - src_y,
1383                                    scale_x, scale_y,
1384                                    (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality,
1385                                    it->x + pb_x, it->y + pb_y);
1386                 if (rt->stereo_mode & PR_STEREO_ANAGLYPH &&
1387                     (pr->stereo_pixbuf_offset_right > 0 || pr->stereo_pixbuf_offset_left > 0))
1388                         {
1389                         GdkPixbuf *right_pb = rt_get_spare_tile(rt);
1390                         rt_tile_get_region(has_alpha,
1391                                            pr->pixbuf, right_pb, pb_x, pb_y, pb_w, pb_h,
1392                                            (gdouble) 0.0 - src_x - GET_LEFT_PIXBUF_OFFSET(rt) * scale_x,
1393                                            (gdouble) 0.0 - src_y,
1394                                            scale_x, scale_y,
1395                                            (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality,
1396                                            it->x + pb_x, it->y + pb_y);
1397                         pr_create_anaglyph(rt->stereo_mode, it->pixbuf, right_pb, pb_x, pb_y, pb_w, pb_h);
1398                         /* do not care about freeing spare_tile, it will be reused */
1399                         }
1400                 rt_tile_apply_orientation(rt, orientation, &it->pixbuf, pb_x, pb_y, pb_w, pb_h);
1401                 draw = TRUE;
1402                 }
1403
1404         if (draw && it->pixbuf && !it->blank)
1405                 {
1406                 cairo_t *cr;
1407
1408                 if (pr->func_post_process && !(pr->post_process_slow && fast))
1409                         pr->func_post_process(pr, &it->pixbuf, x, y, w, h, pr->post_process_user_data);
1410
1411                 cr = cairo_create(it->surface);
1412                 cairo_rectangle (cr, x, y, w, h);
1413                 gdk_cairo_set_source_pixbuf(cr, it->pixbuf, 0, 0);
1414                 cairo_fill (cr);
1415                 cairo_destroy (cr);
1416                 }
1417 }
1418
1419
1420 static void rt_tile_expose(RendererTiles *rt, ImageTile *it,
1421                            gint x, gint y, gint w, gint h,
1422                            gboolean new_data, gboolean fast)
1423 {
1424         PixbufRenderer *pr = rt->pr;
1425         GtkWidget *box;
1426         GdkWindow *window;
1427         cairo_t *cr;
1428
1429         /* clamp to visible */
1430         if (it->x + x < rt->x_scroll)
1431                 {
1432                 w -= rt->x_scroll - it->x - x;
1433                 x = rt->x_scroll - it->x;
1434                 }
1435         if (it->x + x + w > rt->x_scroll + pr->vis_width)
1436                 {
1437                 w = rt->x_scroll + pr->vis_width - it->x - x;
1438                 }
1439         if (w < 1) return;
1440         if (it->y + y < rt->y_scroll)
1441                 {
1442                 h -= rt->y_scroll - it->y - y;
1443                 y = rt->y_scroll - it->y;
1444                 }
1445         if (it->y + y + h > rt->y_scroll + pr->vis_height)
1446                 {
1447                 h = rt->y_scroll + pr->vis_height - it->y - y;
1448                 }
1449         if (h < 1) return;
1450
1451         rt_tile_render(rt, it, x, y, w, h, new_data, fast);
1452
1453         box = GTK_WIDGET(pr);
1454         window = gtk_widget_get_window(box);
1455
1456         cr = gdk_cairo_create(window);
1457         cairo_set_source_surface(cr, it->surface, pr->x_offset + (it->x - rt->x_scroll) + rt->stereo_off_x, pr->y_offset + (it->y - rt->y_scroll) + rt->stereo_off_y);
1458         cairo_rectangle (cr, pr->x_offset + (it->x - rt->x_scroll) + x + rt->stereo_off_x, pr->y_offset + (it->y - rt->y_scroll) + y + rt->stereo_off_y, w, h);
1459         cairo_fill (cr);
1460         cairo_destroy (cr);
1461
1462         if (rt->overlay_list)
1463                 {
1464                 rt_overlay_draw(rt, pr->x_offset + (it->x - rt->x_scroll) + x,
1465                                 pr->y_offset + (it->y - rt->y_scroll) + y,
1466                                 w, h,
1467                                 it);
1468                 }
1469 }
1470
1471
1472 static gboolean rt_tile_is_visible(RendererTiles *rt, ImageTile *it)
1473 {
1474         PixbufRenderer *pr = rt->pr;
1475         return (it->x + it->w >= rt->x_scroll && it->x < rt->x_scroll + pr->vis_width &&
1476                 it->y + it->h >= rt->y_scroll && it->y < rt->y_scroll + pr->vis_height);
1477 }
1478
1479 /*
1480  *-------------------------------------------------------------------
1481  * draw queue
1482  *-------------------------------------------------------------------
1483  */
1484
1485 static gint rt_get_queued_area(GList *work)
1486 {
1487         gint area = 0;
1488
1489         while (work)
1490                 {
1491                 QueueData *qd = work->data;
1492                 area += qd->w * qd->h;
1493                 work = work->next;
1494                 }
1495         return area;
1496 }
1497
1498
1499 static gboolean rt_queue_schedule_next_draw(RendererTiles *rt, gboolean force_set)
1500 {
1501         PixbufRenderer *pr = rt->pr;
1502         gfloat percent;
1503         gint visible_area = pr->vis_width * pr->vis_height;
1504
1505         if (!pr->loading)
1506                 {
1507                 /* 2pass prio */
1508                 DEBUG_2("redraw priority: 2pass");
1509                 rt->draw_idle_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, rt_queue_draw_idle_cb, rt, NULL);
1510                 return FALSE;
1511                 }
1512
1513         if (visible_area == 0)
1514                 {
1515                 /* not known yet */
1516                 percent = 100.0;
1517                 }
1518         else
1519                 {
1520                 percent = 100.0 * rt_get_queued_area(rt->draw_queue) / visible_area;
1521                 }
1522
1523         if (percent > 10.0)
1524                 {
1525                 /* we have enough data for starting intensive redrawing */
1526                 DEBUG_2("redraw priority: high %.2f %%", percent);
1527                 rt->draw_idle_id = g_idle_add_full(GDK_PRIORITY_REDRAW, rt_queue_draw_idle_cb, rt, NULL);
1528                 return FALSE;
1529                 }
1530
1531         if (percent < 1.0 || force_set)
1532                 {
1533                 /* queue is (almost) empty, wait  50 ms*/
1534                 DEBUG_2("redraw priority: wait %.2f %%", percent);
1535                 rt->draw_idle_id = g_timeout_add_full(G_PRIORITY_DEFAULT_IDLE, 50, rt_queue_draw_idle_cb, rt, NULL);
1536                 return FALSE;
1537                 }
1538
1539         /* keep the same priority as before */
1540         DEBUG_2("redraw priority: no change %.2f %%", percent);
1541         return TRUE;
1542 }
1543
1544
1545 static gboolean rt_queue_draw_idle_cb(gpointer data)
1546 {
1547         RendererTiles *rt = data;
1548         PixbufRenderer *pr = rt->pr;
1549         QueueData *qd;
1550         gboolean fast;
1551
1552
1553         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
1554             (!rt->draw_queue && !rt->draw_queue_2pass) ||
1555             !rt->draw_idle_id)
1556                 {
1557                 pr_render_complete_signal(pr);
1558
1559                 rt->draw_idle_id = 0;
1560                 return FALSE;
1561                 }
1562
1563         if (rt->draw_queue)
1564                 {
1565                 qd = rt->draw_queue->data;
1566                 fast = (pr->zoom_2pass && ((pr->zoom_quality != GDK_INTERP_NEAREST && pr->scale != 1.0) || pr->post_process_slow));
1567                 }
1568         else
1569                 {
1570                 if (pr->loading)
1571                         {
1572                         /* still loading, wait till done (also drops the higher priority) */
1573
1574                         return rt_queue_schedule_next_draw(rt, FALSE);
1575                         }
1576
1577                 qd = rt->draw_queue_2pass->data;
1578                 fast = FALSE;
1579                 }
1580
1581         if (gtk_widget_get_realized(GTK_WIDGET(pr)))
1582                 {
1583                 if (rt_tile_is_visible(rt, qd->it))
1584                         {
1585                         rt_tile_expose(rt, qd->it, qd->x, qd->y, qd->w, qd->h, qd->new_data, fast);
1586                         }
1587                 else if (qd->new_data)
1588                         {
1589                         /* if new pixel data, and we already have a pixmap, update the tile */
1590                         qd->it->blank = FALSE;
1591                         if (qd->it->surface && qd->it->render_done == TILE_RENDER_ALL)
1592                                 {
1593                                 rt_tile_render(rt, qd->it, qd->x, qd->y, qd->w, qd->h, qd->new_data, fast);
1594                                 }
1595                         }
1596                 }
1597
1598         if (rt->draw_queue)
1599                 {
1600                 qd->it->qd = NULL;
1601                 rt->draw_queue = g_list_remove(rt->draw_queue, qd);
1602                 if (fast)
1603                         {
1604                         if (qd->it->qd2)
1605                                 {
1606                                 rt_queue_merge(qd->it->qd2, qd);
1607                                 g_free(qd);
1608                                 }
1609                         else
1610                                 {
1611                                 qd->it->qd2 = qd;
1612                                 rt->draw_queue_2pass = g_list_append(rt->draw_queue_2pass, qd);
1613                                 }
1614                         }
1615                 else
1616                         {
1617                         g_free(qd);
1618                         }
1619                 }
1620         else
1621                 {
1622                 qd->it->qd2 = NULL;
1623                 rt->draw_queue_2pass = g_list_remove(rt->draw_queue_2pass, qd);
1624                 g_free(qd);
1625                 }
1626
1627         if (!rt->draw_queue && !rt->draw_queue_2pass)
1628                 {
1629                 pr_render_complete_signal(pr);
1630
1631                 rt->draw_idle_id = 0;
1632                 return FALSE;
1633                 }
1634
1635                 return rt_queue_schedule_next_draw(rt, FALSE);
1636 }
1637
1638 static void rt_queue_list_free(GList *list)
1639 {
1640         GList *work;
1641
1642         work = list;
1643         while (work)
1644                 {
1645                 QueueData *qd;
1646
1647                 qd = work->data;
1648                 work = work->next;
1649
1650                 qd->it->qd = NULL;
1651                 qd->it->qd2 = NULL;
1652                 g_free(qd);
1653                 }
1654
1655         g_list_free(list);
1656 }
1657
1658 static void rt_queue_clear(RendererTiles *rt)
1659 {
1660         rt_queue_list_free(rt->draw_queue);
1661         rt->draw_queue = NULL;
1662
1663         rt_queue_list_free(rt->draw_queue_2pass);
1664         rt->draw_queue_2pass = NULL;
1665
1666         if (rt->draw_idle_id)
1667                 {
1668                 g_source_remove(rt->draw_idle_id);
1669                 rt->draw_idle_id = 0;
1670                 }
1671         rt_sync_scroll(rt);
1672 }
1673
1674 static void rt_queue_merge(QueueData *parent, QueueData *qd)
1675 {
1676         if (parent->x + parent->w < qd->x + qd->w)
1677                 {
1678                 parent->w += (qd->x + qd->w) - (parent->x + parent->w);
1679                 }
1680         if (parent->x > qd->x)
1681                 {
1682                 parent->w += parent->x - qd->x;
1683                 parent->x = qd->x;
1684                 }
1685
1686         if (parent->y + parent->h < qd->y + qd->h)
1687                 {
1688                 parent->h += (qd->y + qd->h) - (parent->y + parent->h);
1689                 }
1690         if (parent->y > qd->y)
1691                 {
1692                 parent->h += parent->y - qd->y;
1693                 parent->y = qd->y;
1694                 }
1695
1696         parent->new_data |= qd->new_data;
1697 }
1698
1699 static gboolean rt_clamp_to_visible(RendererTiles *rt, gint *x, gint *y, gint *w, gint *h)
1700 {
1701         PixbufRenderer *pr = rt->pr;
1702         gint nx, ny;
1703         gint nw, nh;
1704         gint vx, vy;
1705         gint vw, vh;
1706
1707         vw = pr->vis_width;
1708         vh = pr->vis_height;
1709
1710         vx = rt->x_scroll;
1711         vy = rt->y_scroll;
1712
1713         if (*x + *w < vx || *x > vx + vw || *y + *h < vy || *y > vy + vh) return FALSE;
1714
1715         /* now clamp it */
1716         nx = CLAMP(*x, vx, vx + vw);
1717         nw = CLAMP(*w - (nx - *x), 1, vw);
1718
1719         ny = CLAMP(*y, vy, vy + vh);
1720         nh = CLAMP(*h - (ny - *y), 1, vh);
1721
1722         *x = nx;
1723         *y = ny;
1724         *w = nw;
1725         *h = nh;
1726
1727         return TRUE;
1728 }
1729
1730 static gboolean rt_queue_to_tiles(RendererTiles *rt, gint x, gint y, gint w, gint h,
1731                                   gboolean clamp, ImageRenderType render,
1732                                   gboolean new_data, gboolean only_existing)
1733 {
1734         PixbufRenderer *pr = rt->pr;
1735         gint i, j;
1736         gint x1, x2;
1737         gint y1, y2;
1738
1739         if (clamp && !rt_clamp_to_visible(rt, &x, &y, &w, &h)) return FALSE;
1740
1741         x1 = ROUND_DOWN(x, rt->tile_width);
1742         x2 = ROUND_UP(x + w, rt->tile_width);
1743
1744         y1 = ROUND_DOWN(y, rt->tile_height);
1745         y2 = ROUND_UP(y + h, rt->tile_height);
1746
1747         for (j = y1; j <= y2; j += rt->tile_height)
1748                 {
1749                 for (i = x1; i <= x2; i += rt->tile_width)
1750                         {
1751                         ImageTile *it;
1752
1753                         it = rt_tile_get(rt, i, j,
1754                                          (only_existing &&
1755                                           (i + rt->tile_width < rt->x_scroll ||
1756                                            i > rt->x_scroll + pr->vis_width ||
1757                                            j + rt->tile_height < rt->y_scroll ||
1758                                            j > rt->y_scroll + pr->vis_height)));
1759                         if (it)
1760                                 {
1761                                 QueueData *qd;
1762
1763                                 if ((render == TILE_RENDER_ALL && it->render_done != TILE_RENDER_ALL) ||
1764                                     (render == TILE_RENDER_AREA && it->render_todo != TILE_RENDER_ALL))
1765                                         {
1766                                         it->render_todo = render;
1767                                         }
1768
1769                                 qd = g_new(QueueData, 1);
1770                                 qd->it = it;
1771                                 qd->new_data = new_data;
1772
1773                                 if (i < x)
1774                                         {
1775                                         qd->x = x - i;
1776                                         }
1777                                 else
1778                                         {
1779                                         qd->x = 0;
1780                                         }
1781                                 qd->w = x + w - i - qd->x;
1782                                 if (qd->x + qd->w > rt->tile_width) qd->w = rt->tile_width - qd->x;
1783
1784                                 if (j < y)
1785                                         {
1786                                         qd->y = y - j;
1787                                         }
1788                                 else
1789                                         {
1790                                         qd->y = 0;
1791                                         }
1792                                 qd->h = y + h - j - qd->y;
1793                                 if (qd->y + qd->h > rt->tile_height) qd->h = rt->tile_height - qd->y;
1794
1795                                 if (qd->w < 1 || qd->h < 1)
1796                                         {
1797                                         g_free(qd);
1798                                         }
1799                                 else if (it->qd)
1800                                         {
1801                                         rt_queue_merge(it->qd, qd);
1802                                         g_free(qd);
1803                                         }
1804                                 else
1805                                         {
1806                                         it->qd = qd;
1807                                         rt->draw_queue = g_list_append(rt->draw_queue, qd);
1808                                         }
1809                                 }
1810                         }
1811                 }
1812
1813         return TRUE;
1814 }
1815
1816 static void rt_queue(RendererTiles *rt, gint x, gint y, gint w, gint h,
1817                      gboolean clamp, ImageRenderType render,
1818                      gboolean new_data, gboolean only_existing)
1819 {
1820         PixbufRenderer *pr = rt->pr;
1821         gint nx, ny;
1822
1823         rt_sync_scroll(rt);
1824
1825         nx = CLAMP(x, 0, pr->width - 1);
1826         ny = CLAMP(y, 0, pr->height - 1);
1827         w -= (nx - x);
1828         h -= (ny - y);
1829         w = CLAMP(w, 0, pr->width - nx);
1830         h = CLAMP(h, 0, pr->height - ny);
1831         if (w < 1 || h < 1) return;
1832
1833         if (rt_queue_to_tiles(rt, nx, ny, w, h, clamp, render, new_data, only_existing) &&
1834             ((!rt->draw_queue && !rt->draw_queue_2pass) || !rt->draw_idle_id))
1835                 {
1836                 if (rt->draw_idle_id)
1837                         {
1838                         g_source_remove(rt->draw_idle_id);
1839                         rt->draw_idle_id = 0;
1840                         }
1841                 rt_queue_schedule_next_draw(rt, TRUE);
1842                 }
1843 }
1844
1845 static void rt_scroll(void *renderer, gint x_off, gint y_off)
1846 {
1847         RendererTiles *rt = (RendererTiles *) renderer;
1848         PixbufRenderer *pr = rt->pr;
1849
1850         rt_sync_scroll(rt);
1851         if (rt->stereo_mode & PR_STEREO_MIRROR) x_off = -x_off;
1852         if (rt->stereo_mode & PR_STEREO_FLIP) y_off = -y_off;
1853
1854         gint w = pr->vis_width - abs(x_off);
1855         gint h = pr->vis_height - abs(y_off);
1856
1857         if (w < 1 || h < 1)
1858                 {
1859                 /* scrolled completely to new material */
1860                 rt_queue(rt, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1861                 return;
1862                 }
1863         else
1864                 {
1865                 gint x1, y1;
1866                 gint x2, y2;
1867                 GtkWidget *box;
1868                 GdkWindow *window;
1869                 cairo_t *cr;
1870                 cairo_surface_t *surface;
1871
1872                 if (x_off < 0)
1873                         {
1874                         x1 = abs(x_off);
1875                         x2 = 0;
1876                         }
1877                 else
1878                         {
1879                         x1 = 0;
1880                         x2 = abs(x_off);
1881                         }
1882
1883                 if (y_off < 0)
1884                         {
1885                         y1 = abs(y_off);
1886                         y2 = 0;
1887                         }
1888                 else
1889                         {
1890                         y1 = 0;
1891                         y2 = abs(y_off);
1892                         }
1893
1894                 box = GTK_WIDGET(pr);
1895                 window = gtk_widget_get_window(box);
1896
1897                 cr = gdk_cairo_create(window);
1898                 surface = cairo_get_target(cr);
1899                 /* clipping restricts the intermediate surface's size, so it's a good idea
1900                  * to use it. */
1901                 cairo_rectangle(cr, x1 + pr->x_offset + rt->stereo_off_x, y1 + pr->y_offset + rt->stereo_off_y, w, h);
1902                 cairo_clip (cr);
1903                 /* Now push a group to change the target */
1904                 cairo_push_group (cr);
1905                 cairo_set_source_surface(cr, surface, x1 - x2, y1 - y2);
1906                 cairo_paint(cr);
1907                 /* Now copy the intermediate target back */
1908                 cairo_pop_group_to_source(cr);
1909                 cairo_paint(cr);
1910                 cairo_destroy(cr);
1911
1912                 rt_overlay_queue_all(rt, x2, y2, x1, y1);
1913
1914                 w = pr->vis_width - w;
1915                 h = pr->vis_height - h;
1916
1917                 if (w > 0)
1918                         {
1919                         rt_queue(rt,
1920                                     x_off > 0 ? rt->x_scroll + (pr->vis_width - w) : rt->x_scroll, rt->y_scroll,
1921                                     w, pr->vis_height, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1922                         }
1923                 if (h > 0)
1924                         {
1925                         /* FIXME, to optimize this, remove overlap */
1926                         rt_queue(rt,
1927                                     rt->x_scroll, y_off > 0 ? rt->y_scroll + (pr->vis_height - h) : rt->y_scroll,
1928                                     pr->vis_width, h, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1929                         }
1930                 }
1931 }
1932
1933 static void renderer_area_changed(void *renderer, gint src_x, gint src_y, gint src_w, gint src_h)
1934 {
1935         RendererTiles *rt = (RendererTiles *)renderer;
1936         PixbufRenderer *pr = rt->pr;
1937         gint x, y, width, height,  x1, y1, x2, y2;
1938
1939         gint orientation = rt_get_orientation(rt);
1940         pr_coords_map_orientation_reverse(orientation,
1941                                      src_x - GET_RIGHT_PIXBUF_OFFSET(rt), src_y,
1942                                      pr->image_width, pr->image_height,
1943                                      src_w, src_h,
1944                                      &x, &y,
1945                                      &width, &height);
1946
1947         if (pr->scale != 1.0 && pr->zoom_quality != GDK_INTERP_NEAREST)
1948                 {
1949                 /* increase region when using a zoom quality that may access surrounding pixels */
1950                 y -= 1;
1951                 height += 2;
1952                 }
1953
1954         x1 = (gint)floor((gdouble)x * pr->scale);
1955         y1 = (gint)floor((gdouble)y * pr->scale * pr->aspect_ratio);
1956         x2 = (gint)ceil((gdouble)(x + width) * pr->scale);
1957         y2 = (gint)ceil((gdouble)(y + height) * pr->scale * pr->aspect_ratio);
1958
1959         rt_queue(rt, x1, y1, x2 - x1, y2 - y1, FALSE, TILE_RENDER_AREA, TRUE, TRUE);
1960 }
1961
1962 static void renderer_redraw(RendererTiles *rt, gint x, gint y, gint w, gint h,
1963                      gint clamp, ImageRenderType render, gboolean new_data, gboolean only_existing)
1964 {
1965         PixbufRenderer *pr = rt->pr;
1966
1967         x -= rt->stereo_off_x;
1968         y -= rt->stereo_off_y;
1969
1970         rt_border_draw(rt, x, y, w, h);
1971
1972         x = MAX(0, x - pr->x_offset + pr->x_scroll);
1973         y = MAX(0, y - pr->y_offset + pr->y_scroll);
1974
1975         rt_queue(rt,
1976                  x, y,
1977                  MIN(w, pr->width - x),
1978                  MIN(h, pr->height - y),
1979                  clamp, render, new_data, only_existing);
1980 }
1981
1982 static void renderer_update_pixbuf(void *renderer, gboolean lazy)
1983 {
1984         rt_queue_clear((RendererTiles *)renderer);
1985 }
1986
1987 static void renderer_update_zoom(void *renderer, gboolean lazy)
1988 {
1989         RendererTiles *rt = (RendererTiles *)renderer;
1990         PixbufRenderer *pr = rt->pr;
1991
1992         rt_tile_invalidate_all((RendererTiles *)renderer);
1993         if (!lazy)
1994                 {
1995                 renderer_redraw(renderer, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, TRUE, FALSE);
1996                 }
1997         rt_border_clear(rt);
1998 }
1999
2000 static void renderer_invalidate_region(void *renderer, gint x, gint y, gint w, gint h)
2001 {
2002         rt_tile_invalidate_region((RendererTiles *)renderer, x, y, w, h);
2003 }
2004
2005 static void renderer_update_viewport(void *renderer)
2006 {
2007         RendererTiles *rt = (RendererTiles *)renderer;
2008
2009         rt->stereo_off_x = 0;
2010         rt->stereo_off_y = 0;
2011
2012         if (rt->stereo_mode & PR_STEREO_RIGHT)
2013                 {
2014                 if (rt->stereo_mode & PR_STEREO_HORIZ)
2015                         {
2016                         rt->stereo_off_x = rt->pr->viewport_width;
2017                         }
2018                 else if (rt->stereo_mode & PR_STEREO_VERT)
2019                         {
2020                         rt->stereo_off_y = rt->pr->viewport_height;
2021                         }
2022                 else if (rt->stereo_mode & PR_STEREO_FIXED)
2023                         {
2024                         rt->stereo_off_x = rt->pr->stereo_fixed_x_right;
2025                         rt->stereo_off_y = rt->pr->stereo_fixed_y_right;
2026                         }
2027                 }
2028         else
2029                 {
2030                 if (rt->stereo_mode & PR_STEREO_FIXED)
2031                         {
2032                         rt->stereo_off_x = rt->pr->stereo_fixed_x_left;
2033                         rt->stereo_off_y = rt->pr->stereo_fixed_y_left;
2034                         }
2035                 }
2036         DEBUG_1("update size: %p  %d %d   %d %d", rt, rt->stereo_off_x, rt->stereo_off_y, rt->pr->viewport_width, rt->pr->viewport_height);
2037         rt_sync_scroll(rt);
2038         rt_overlay_update_sizes(rt);
2039         rt_border_clear(rt);
2040 }
2041
2042 static void renderer_stereo_set(void *renderer, gint stereo_mode)
2043 {
2044         RendererTiles *rt = (RendererTiles *)renderer;
2045
2046         rt->stereo_mode = stereo_mode;
2047 }
2048
2049 static void renderer_free(void *renderer)
2050 {
2051         RendererTiles *rt = (RendererTiles *)renderer;
2052         rt_queue_clear(rt);
2053         rt_tile_free_all(rt);
2054         if (rt->spare_tile) g_object_unref(rt->spare_tile);
2055         if (rt->overlay_buffer) g_object_unref(rt->overlay_buffer);
2056         rt_overlay_list_clear(rt);
2057         /* disconnect "hierarchy-changed" */
2058         g_signal_handlers_disconnect_matched(G_OBJECT(rt->pr), G_SIGNAL_MATCH_DATA,
2059                                                      0, 0, 0, NULL, rt);
2060         g_free(rt);
2061 }
2062
2063 #if GTK_CHECK_VERSION(3,0,0)
2064
2065 static gboolean rt_draw_cb(GtkWidget *widget, cairo_t *cr, gpointer data)
2066 {
2067         RendererTiles *rt = (RendererTiles *)data;
2068         if (gtk_widget_is_drawable(widget))
2069                 {
2070                 if (gtk_widget_get_has_window(widget))
2071                         {
2072                         GdkRectangle area;
2073                         if (gdk_cairo_get_clip_rectangle(cr, &area))
2074                                 {
2075                                 renderer_redraw(rt, area.x, area.y, area.width, area.height,
2076                                                 FALSE, TILE_RENDER_ALL, FALSE, FALSE);
2077                                 }
2078                         }
2079                 }
2080
2081         return FALSE;
2082 }
2083
2084 #else
2085 static gboolean rt_expose_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
2086 {
2087         RendererTiles *rt = (RendererTiles *)data;
2088         if (gtk_widget_is_drawable(widget))
2089                 {
2090                 if (gtk_widget_get_has_window(widget))
2091                         {
2092                         if (event->window != gtk_widget_get_window(widget))
2093                                 {
2094                                 GdkRectangle area;
2095
2096                                 gdk_window_get_position(event->window, &area.x, &area.y);
2097                                 area.x += event->area.x;
2098                                 area.y += event->area.y;
2099                                 area.width = event->area.width;
2100                                 area.height = event->area.height;
2101                                 renderer_redraw(rt, area.x, area.y, area.width, area.height,
2102                                                 FALSE, TILE_RENDER_ALL, FALSE, FALSE);
2103
2104                                 }
2105                         else
2106                                 {
2107                                 renderer_redraw(rt, event->area.x, event->area.y, event->area.width, event->area.height,
2108                                                 FALSE, TILE_RENDER_ALL, FALSE, FALSE);
2109                                 }
2110                         }
2111                 }
2112
2113         return FALSE;
2114 }
2115 #endif
2116
2117
2118 RendererFuncs *renderer_tiles_new(PixbufRenderer *pr)
2119 {
2120         RendererTiles *rt = g_new0(RendererTiles, 1);
2121
2122         rt->pr = pr;
2123
2124         rt->f.area_changed = renderer_area_changed;
2125         rt->f.update_pixbuf = renderer_update_pixbuf;
2126         rt->f.free = renderer_free;
2127         rt->f.update_zoom = renderer_update_zoom;
2128         rt->f.invalidate_region = renderer_invalidate_region;
2129         rt->f.scroll = rt_scroll;
2130         rt->f.update_viewport = renderer_update_viewport;
2131
2132
2133         rt->f.overlay_add = renderer_tiles_overlay_add;
2134         rt->f.overlay_set = renderer_tiles_overlay_set;
2135         rt->f.overlay_get = renderer_tiles_overlay_get;
2136
2137         rt->f.stereo_set = renderer_stereo_set;
2138
2139         rt->tile_width = PR_TILE_SIZE;
2140         rt->tile_height = PR_TILE_SIZE;
2141
2142         rt->tiles = NULL;
2143         rt->tile_cache_size = 0;
2144
2145         rt->tile_cache_max = PR_CACHE_SIZE_DEFAULT;
2146
2147         rt->draw_idle_id = 0;
2148
2149         rt->stereo_mode = 0;
2150         rt->stereo_off_x = 0;
2151         rt->stereo_off_y = 0;
2152
2153         g_signal_connect(G_OBJECT(pr), "hierarchy-changed",
2154                          G_CALLBACK(rt_hierarchy_changed_cb), rt);
2155
2156 #if GTK_CHECK_VERSION(3,0,0)
2157         g_signal_connect(G_OBJECT(pr), "draw",
2158                          G_CALLBACK(rt_draw_cb), rt);
2159 #else
2160         g_signal_connect(G_OBJECT(pr), "expose_event",
2161                          G_CALLBACK(rt_expose_cb), rt);
2162 #endif
2163         return (RendererFuncs *) rt;
2164 }
2165
2166
2167 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */