src/renderer-tiles.c

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