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