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 ((pr->zoom != 1.0 || pr->source_tiles_enabled || (pr->pixbuf && gdk_pixbuf_get_has_alpha(pr->pixbuf)) ||
 495              pr->orientation != EXIF_ORIENTATION_TOP_LEFT || pr->func_post_process) && !it->pixbuf)
 496                 {
 497                 GdkPixbuf *pixbuf;
 498                 guint size;
 499                         {
 500                         pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, rt->tile_width, rt->tile_height);
 501                         }
 502
 503                 size = gdk_pixbuf_get_rowstride(pixbuf) * rt->tile_height;
 504                 rt_tile_free_space(rt, size, it);
 505
 506                 it->pixbuf = pixbuf;
 507                 it->size += size;
 508                 rt->tile_cache_size += size;
 509                 }
 510 }
 511
 512 /*
 513  *-------------------------------------------------------------------
 514  * overlays
 515  *-------------------------------------------------------------------
 516  */
 517
 518 static void rt_overlay_get_position(RendererTiles *rt, OverlayData *od,
 519                                     gint *x, gint *y, gint *w, gint *h)
 520 {
 521         PixbufRenderer *pr = rt->pr;
 522         gint px, py, pw, ph;
 523
 524         pw = gdk_pixbuf_get_width(od->pixbuf);
 525         ph = gdk_pixbuf_get_height(od->pixbuf);
 526         px = od->x;
 527         py = od->y;
 528
 529         if (od->flags & OVL_RELATIVE)
 530                 {
 531                 if (px < 0) px = pr->viewport_width - pw + px;
 532                 if (py < 0) py = pr->viewport_height - ph + py;
 533                 }
 534
 535         if (x) *x = px;
 536         if (y) *y = py;
 537         if (w) *w = pw;
 538         if (h) *h = ph;
 539 }
 540
 541 static void rt_overlay_init_window(RendererTiles *rt, OverlayData *od)
 542 {
 543         PixbufRenderer *pr = rt->pr;
 544         gint px, py, pw, ph;
 545         GdkWindowAttr attributes;
 546         gint attributes_mask;
 547
 548         rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 549
 550         attributes.window_type = GDK_WINDOW_CHILD;
 551         attributes.wclass = GDK_INPUT_OUTPUT;
 552         attributes.width = pw;
 553         attributes.height = ph;
 554         attributes.event_mask = GDK_EXPOSURE_MASK;
 555         attributes_mask = 0;
 556
 557         od->window = gdk_window_new(GTK_WIDGET(pr)->window, &attributes, attributes_mask);
 558         gdk_window_set_user_data(od->window, pr);
 559         gdk_window_move(od->window, px + rt->stereo_off_x, py + rt->stereo_off_y);
 560         gdk_window_show(od->window);
 561 }
 562
 563 static void rt_overlay_draw(RendererTiles *rt, gint x, gint y, gint w, gint h,
 564                             ImageTile *it)
 565 {
 566         PixbufRenderer *pr = rt->pr;
 567         GtkWidget *box;
 568         GList *work;
 569
 570         box = GTK_WIDGET(pr);
 571
 572         work = rt->overlay_list;
 573         while (work)
 574                 {
 575                 OverlayData *od;
 576                 gint px, py, pw, ph;
 577                 gint rx, ry, rw, rh;
 578
 579                 od = work->data;
 580                 work = work->next;
 581
 582                 if (!od->window) rt_overlay_init_window(rt, od);
 583
 584                 rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 585                 if (pr_clip_region(x, y, w, h, px, py, pw, ph, &rx, &ry, &rw, &rh))
 586                         {
 587                         if (!rt->overlay_buffer)
 588                                 {
 589                                 rt->overlay_buffer = gdk_pixmap_new(((GtkWidget *)pr)->window, rt->tile_width, rt->tile_height, -1);
 590                                 }
 591
 592                         if (it)
 593                                 {
 594 #if GTK_CHECK_VERSION(2,20,0)
 595                                 gdk_draw_drawable(rt->overlay_buffer, box->style->fg_gc[gtk_widget_get_state(box)],
 596 #else
 597                                 gdk_draw_drawable(rt->overlay_buffer, box->style->fg_gc[GTK_WIDGET_STATE(box)],
 598 #endif
 599                                                   it->pixmap,
 600                                                   rx - (pr->x_offset + (it->x - rt->x_scroll)),
 601                                                   ry - (pr->y_offset + (it->y - rt->y_scroll)),
 602                                                   0, 0, rw, rh);
 603                                 gdk_draw_pixbuf(rt->overlay_buffer,
 604 #if GTK_CHECK_VERSION(2,20,0)
 605                                                 box->style->fg_gc[gtk_widget_get_state(box)],
 606 #else
 607                                                 box->style->fg_gc[GTK_WIDGET_STATE(box)],
 608 #endif
 609                                                 od->pixbuf,
 610                                                 rx - px, ry - py,
 611                                                 0, 0, rw, rh,
 612                                                 pr->dither_quality, rx, ry);
 613 #if GTK_CHECK_VERSION(2,20,0)
 614                                 gdk_draw_drawable(od->window, box->style->fg_gc[gtk_widget_get_state(box)],
 615 #else
 616                                 gdk_draw_drawable(od->window, box->style->fg_gc[GTK_WIDGET_STATE(box)],
 617 #endif
 618                                                   rt->overlay_buffer,
 619                                                   0, 0,
 620                                                   rx - px, ry - py, rw, rh);
 621                                 }
 622                         else
 623                                 {
 624                                 /* no ImageTile means region may be larger than our scratch buffer */
 625                                 gint sx, sy;
 626
 627                                 for (sx = rx; sx < rx + rw; sx += rt->tile_width)
 628                                     for (sy = ry; sy < ry + rh; sy += rt->tile_height)
 629                                         {
 630                                         gint sw, sh;
 631
 632                                         sw = MIN(rx + rw - sx, rt->tile_width);
 633                                         sh = MIN(ry + rh - sy, rt->tile_height);
 634
 635                                         gdk_draw_rectangle(rt->overlay_buffer,
 636 #if GTK_CHECK_VERSION(2,20,0)
 637                                                            box->style->bg_gc[gtk_widget_get_state(box)], TRUE,
 638 #else
 639                                                            box->style->bg_gc[GTK_WIDGET_STATE(box)], TRUE,
 640 #endif
 641                                                            0, 0, sw, sh);
 642                                         gdk_draw_pixbuf(rt->overlay_buffer,
 643 #if GTK_CHECK_VERSION(2,20,0)
 644                                                         box->style->fg_gc[gtk_widget_get_state(box)],
 645 #else
 646                                                         box->style->fg_gc[GTK_WIDGET_STATE(box)],
 647 #endif
 648                                                         od->pixbuf,
 649                                                         sx - px, sy - py,
 650                                                         0, 0, sw, sh,
 651                                                         pr->dither_quality, sx, sy);
 652 #if GTK_CHECK_VERSION(2,20,0)
 653                                         gdk_draw_drawable(od->window, box->style->fg_gc[gtk_widget_get_state(box)],
 654 #else
 655                                         gdk_draw_drawable(od->window, box->style->fg_gc[GTK_WIDGET_STATE(box)],
 656 #endif
 657                                                           rt->overlay_buffer,
 658                                                           0, 0,
 659                                                           sx - px, sy - py, sw, sh);
 660                                         }
 661                                 }
 662                         }
 663                 }
 664 }
 665
 666 static void rt_overlay_queue_draw(RendererTiles *rt, OverlayData *od, gint x1, gint y1, gint x2, gint y2)
 667 {
 668         PixbufRenderer *pr = rt->pr;
 669         gint x, y, w, h;
 670
 671         rt_overlay_get_position(rt, od, &x, &y, &w, &h);
 672
 673         /* add borders */
 674         x -= x1;
 675         y -= y1;
 676         w += x1 + x2;
 677         h += y1 + y2;
 678
 679         rt_queue(rt, rt->x_scroll - pr->x_offset + x,
 680                  rt->y_scroll - pr->y_offset + y,
 681                  w, h,
 682                  FALSE, TILE_RENDER_ALL, FALSE, FALSE);
 683
 684         rt_border_draw(rt, x, y, w, h);
 685 }
 686
 687 static void rt_overlay_queue_all(RendererTiles *rt, gint x1, gint y1, gint x2, gint y2)
 688 {
 689         GList *work;
 690
 691         work = rt->overlay_list;
 692         while (work)
 693                 {
 694                 OverlayData *od = work->data;
 695                 work = work->next;
 696
 697                 rt_overlay_queue_draw(rt, od, x1, y1, x2, y2);
 698                 }
 699 }
 700
 701 static void rt_overlay_update_sizes(RendererTiles *rt)
 702 {
 703         GList *work;
 704
 705         work = rt->overlay_list;
 706         while (work)
 707                 {
 708                 OverlayData *od = work->data;
 709                 work = work->next;
 710
 711                 if (!od->window) rt_overlay_init_window(rt, od);
 712
 713                 if (od->flags & OVL_RELATIVE)
 714                         {
 715                         gint x, y, w, h;
 716
 717                         rt_overlay_get_position(rt, od, &x, &y, &w, &h);
 718                         gdk_window_move_resize(od->window, x + rt->stereo_off_x, y + rt->stereo_off_y, w, h);
 719                         }
 720                 }
 721 }
 722
 723 static OverlayData *rt_overlay_find(RendererTiles *rt, gint id)
 724 {
 725         GList *work;
 726
 727         work = rt->overlay_list;
 728         while (work)
 729                 {
 730                 OverlayData *od = work->data;
 731                 work = work->next;
 732
 733                 if (od->id == id) return od;
 734                 }
 735
 736         return NULL;
 737 }
 738
 739
 740 gint renderer_tiles_overlay_add(RendererTiles *rt, GdkPixbuf *pixbuf, gint x, gint y,
 741                                  OverlayRendererFlags flags)
 742 {
 743         PixbufRenderer *pr = rt->pr;
 744         OverlayData *od;
 745         gint id;
 746
 747         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), -1);
 748         g_return_val_if_fail(pixbuf != NULL, -1);
 749
 750         id = 1;
 751         while (rt_overlay_find(rt, id)) id++;
 752
 753         od = g_new0(OverlayData, 1);
 754         od->id = id;
 755         od->pixbuf = pixbuf;
 756         g_object_ref(G_OBJECT(od->pixbuf));
 757         od->x = x;
 758         od->y = y;
 759         od->flags = flags;
 760
 761         rt_overlay_init_window(rt, od);
 762
 763         rt->overlay_list = g_list_append(rt->overlay_list, od);
 764
 765         rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 766
 767         return od->id;
 768 }
 769
 770 static void rt_overlay_free(RendererTiles *rt, OverlayData *od)
 771 {
 772         rt->overlay_list = g_list_remove(rt->overlay_list, od);
 773
 774         if (od->pixbuf) g_object_unref(G_OBJECT(od->pixbuf));
 775         if (od->window) gdk_window_destroy(od->window);
 776         g_free(od);
 777
 778         if (!rt->overlay_list && rt->overlay_buffer)
 779                 {
 780                 g_object_unref(rt->overlay_buffer);
 781                 rt->overlay_buffer = NULL;
 782                 }
 783 }
 784
 785 static void rt_overlay_list_clear(RendererTiles *rt)
 786 {
 787         while (rt->overlay_list)
 788                 {
 789                 OverlayData *od;
 790
 791                 od = rt->overlay_list->data;
 792                 rt_overlay_free(rt, od);
 793                 }
 794 }
 795
 796 static void rt_overlay_list_reset_window(RendererTiles *rt)
 797 {
 798         GList *work;
 799
 800         if (rt->overlay_buffer) g_object_unref(rt->overlay_buffer);
 801         rt->overlay_buffer = NULL;
 802
 803         work = rt->overlay_list;
 804         while (work)
 805                 {
 806                 OverlayData *od = work->data;
 807                 work = work->next;
 808                 if (od->window) gdk_window_destroy(od->window);
 809                 od->window = NULL;
 810                 }
 811 }
 812
 813 void renderer_tiles_overlay_set(RendererTiles *rt, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 814 {
 815         PixbufRenderer *pr = rt->pr;
 816         OverlayData *od;
 817
 818         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 819
 820         od = rt_overlay_find(rt, id);
 821         if (!od) return;
 822
 823         if (pixbuf)
 824                 {
 825                 gint px, py, pw, ph;
 826
 827                 g_object_ref(G_OBJECT(pixbuf));
 828                 g_object_unref(G_OBJECT(od->pixbuf));
 829                 od->pixbuf = pixbuf;
 830
 831                 od->x = x;
 832                 od->y = y;
 833
 834                 if (!od->window) rt_overlay_init_window(rt, od);
 835
 836                 rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 837                 rt_overlay_get_position(rt, od, &px, &py, &pw, &ph);
 838                 gdk_window_move_resize(od->window, px + rt->stereo_off_x, py + rt->stereo_off_y, pw, ph);
 839                 }
 840         else
 841                 {
 842                 rt_overlay_queue_draw(rt, od, 0, 0, 0, 0);
 843                 rt_overlay_free(rt, od);
 844                 }
 845 }
 846
 847 gboolean renderer_tiles_overlay_get(RendererTiles *rt, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 848 {
 849         PixbufRenderer *pr = rt->pr;
 850         OverlayData *od;
 851
 852         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
 853
 854         od = rt_overlay_find(rt, id);
 855         if (!od) return FALSE;
 856
 857         if (pixbuf) *pixbuf = od->pixbuf;
 858         if (x) *x = od->x;
 859         if (y) *y = od->y;
 860
 861         return TRUE;
 862 }
 863
 864 static void rt_hierarchy_changed_cb(GtkWidget *widget, GtkWidget *previous_toplevel, gpointer data)
 865 {
 866         RendererTiles *rt = data;
 867         rt_overlay_list_reset_window(rt);
 868 }
 869
 870 /*
 871  *-------------------------------------------------------------------
 872  * drawing
 873  *-------------------------------------------------------------------
 874  */
 875
 876 static GdkPixbuf *rt_get_spare_tile(RendererTiles *rt)
 877 {
 878         if (!rt->spare_tile) rt->spare_tile = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, rt->tile_width, rt->tile_height);
 879         return rt->spare_tile;
 880 }
 881
 882 #define COLOR_BYTES 3   /* rgb */
 883
 884 static void rt_tile_rotate_90_clockwise(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 885 {
 886         GdkPixbuf *src = *tile;
 887         GdkPixbuf *dest;
 888         gint srs, drs;
 889         guchar *s_pix, *d_pix;
 890         guchar *sp, *dp;
 891         guchar *ip, *spi, *dpi;
 892         gint i, j;
 893         gint tw = rt->tile_width;
 894
 895         srs = gdk_pixbuf_get_rowstride(src);
 896         s_pix = gdk_pixbuf_get_pixels(src);
 897         spi = s_pix + (x * COLOR_BYTES);
 898
 899         dest = rt_get_spare_tile(rt);
 900         drs = gdk_pixbuf_get_rowstride(dest);
 901         d_pix = gdk_pixbuf_get_pixels(dest);
 902         dpi = d_pix + (tw - 1) * COLOR_BYTES;
 903
 904         for (i = y; i < y + h; i++)
 905                 {
 906                 sp = spi + (i * srs);
 907                 ip = dpi - (i * COLOR_BYTES);
 908                 for (j = x; j < x + w; j++)
 909                         {
 910                         dp = ip + (j * drs);
 911                         memcpy(dp, sp, COLOR_BYTES);
 912                         sp += COLOR_BYTES;
 913                         }
 914                 }
 915
 916         rt->spare_tile = src;
 917         *tile = dest;
 918 }
 919
 920 static void rt_tile_rotate_90_counter_clockwise(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 921 {
 922         GdkPixbuf *src = *tile;
 923         GdkPixbuf *dest;
 924         gint srs, drs;
 925         guchar *s_pix, *d_pix;
 926         guchar *sp, *dp;
 927         guchar *ip, *spi, *dpi;
 928         gint i, j;
 929         gint th = rt->tile_height;
 930
 931         srs = gdk_pixbuf_get_rowstride(src);
 932         s_pix = gdk_pixbuf_get_pixels(src);
 933         spi = s_pix + (x * COLOR_BYTES);
 934
 935         dest = rt_get_spare_tile(rt);
 936         drs = gdk_pixbuf_get_rowstride(dest);
 937         d_pix = gdk_pixbuf_get_pixels(dest);
 938         dpi = d_pix + (th - 1) * drs;
 939
 940         for (i = y; i < y + h; i++)
 941                 {
 942                 sp = spi + (i * srs);
 943                 ip = dpi + (i * COLOR_BYTES);
 944                 for (j = x; j < x + w; j++)
 945                         {
 946                         dp = ip - (j * drs);
 947                         memcpy(dp, sp, COLOR_BYTES);
 948                         sp += COLOR_BYTES;
 949                         }
 950                 }
 951
 952         rt->spare_tile = src;
 953         *tile = dest;
 954 }
 955
 956 static void rt_tile_mirror_only(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 957 {
 958         GdkPixbuf *src = *tile;
 959         GdkPixbuf *dest;
 960         gint srs, drs;
 961         guchar *s_pix, *d_pix;
 962         guchar *sp, *dp;
 963         guchar *spi, *dpi;
 964         gint i, j;
 965
 966         gint tw = rt->tile_width;
 967
 968         srs = gdk_pixbuf_get_rowstride(src);
 969         s_pix = gdk_pixbuf_get_pixels(src);
 970         spi = s_pix + (x * COLOR_BYTES);
 971
 972         dest = rt_get_spare_tile(rt);
 973         drs = gdk_pixbuf_get_rowstride(dest);
 974         d_pix = gdk_pixbuf_get_pixels(dest);
 975         dpi =  d_pix + (tw - x - 1) * COLOR_BYTES;
 976
 977         for (i = y; i < y + h; i++)
 978                 {
 979                 sp = spi + (i * srs);
 980                 dp = dpi + (i * drs);
 981                 for (j = 0; j < w; j++)
 982                         {
 983                         memcpy(dp, sp, COLOR_BYTES);
 984                         sp += COLOR_BYTES;
 985                         dp -= COLOR_BYTES;
 986                         }
 987                 }
 988
 989         rt->spare_tile = src;
 990         *tile = dest;
 991 }
 992
 993 static void rt_tile_mirror_and_flip(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
 994 {
 995         GdkPixbuf *src = *tile;
 996         GdkPixbuf *dest;
 997         gint srs, drs;
 998         guchar *s_pix, *d_pix;
 999         guchar *sp, *dp;
1000         guchar *spi, *dpi;
1001         gint i, j;
1002         gint tw = rt->tile_width;
1003         gint th = rt->tile_height;
1004
1005         srs = gdk_pixbuf_get_rowstride(src);
1006         s_pix = gdk_pixbuf_get_pixels(src);
1007         spi = s_pix + (x * COLOR_BYTES);
1008
1009         dest = rt_get_spare_tile(rt);
1010         drs = gdk_pixbuf_get_rowstride(dest);
1011         d_pix = gdk_pixbuf_get_pixels(dest);
1012         dpi = d_pix + (th - 1) * drs + (tw - 1) * COLOR_BYTES;
1013
1014         for (i = y; i < y + h; i++)
1015                 {
1016                 sp = s_pix + (i * srs) + (x * COLOR_BYTES);
1017                 dp = dpi - (i * drs) - (x * COLOR_BYTES);
1018                 for (j = 0; j < w; j++)
1019                         {
1020                         memcpy(dp, sp, COLOR_BYTES);
1021                         sp += COLOR_BYTES;
1022                         dp -= COLOR_BYTES;
1023                         }
1024                 }
1025
1026         rt->spare_tile = src;
1027         *tile = dest;
1028 }
1029
1030 static void rt_tile_flip_only(RendererTiles *rt, GdkPixbuf **tile, gint x, gint y, gint w, gint h)
1031 {
1032         GdkPixbuf *src = *tile;
1033         GdkPixbuf *dest;
1034         gint srs, drs;
1035         guchar *s_pix, *d_pix;
1036         guchar *sp, *dp;
1037         guchar *spi, *dpi;
1038         gint i;
1039         gint th = rt->tile_height;
1040
1041         srs = gdk_pixbuf_get_rowstride(src);
1042         s_pix = gdk_pixbuf_get_pixels(src);
1043         spi = s_pix + (x * COLOR_BYTES);
1044
1045         dest = rt_get_spare_tile(rt);
1046         drs = gdk_pixbuf_get_rowstride(dest);
1047         d_pix = gdk_pixbuf_get_pixels(dest);
1048         dpi = d_pix + (th - 1) * drs + (x * COLOR_BYTES);
1049
1050         for (i = y; i < y + h; i++)
1051                 {
1052                 sp = spi + (i * srs);
1053                 dp = dpi - (i * drs);
1054                 memcpy(dp, sp, w * COLOR_BYTES);
1055                 }
1056
1057         rt->spare_tile = src;
1058         *tile = dest;
1059 }
1060
1061 static void rt_tile_apply_orientation(RendererTiles *rt, gint orientation, GdkPixbuf **pixbuf, gint x, gint y, gint w, gint h)
1062 {
1063         switch (orientation)
1064                 {
1065                 case EXIF_ORIENTATION_TOP_LEFT:
1066                         /* normal -- nothing to do */
1067                         break;
1068                 case EXIF_ORIENTATION_TOP_RIGHT:
1069                         /* mirrored */
1070                         {
1071                                 rt_tile_mirror_only(rt, pixbuf, x, y, w, h);
1072                         }
1073                         break;
1074                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1075                         /* upside down */
1076                         {
1077                                 rt_tile_mirror_and_flip(rt, pixbuf, x, y, w, h);
1078                         }
1079                         break;
1080                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1081                         /* flipped */
1082                         {
1083                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1084                         }
1085                         break;
1086                 case EXIF_ORIENTATION_LEFT_TOP:
1087                         {
1088                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1089                                 rt_tile_rotate_90_clockwise(rt, pixbuf, x, rt->tile_height - y - h, w, h);
1090                         }
1091                         break;
1092                 case EXIF_ORIENTATION_RIGHT_TOP:
1093                         /* rotated -90 (270) */
1094                         {
1095                                 rt_tile_rotate_90_clockwise(rt, pixbuf, x, y, w, h);
1096                         }
1097                         break;
1098                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1099                         {
1100                                 rt_tile_flip_only(rt, pixbuf, x, y, w, h);
1101                                 rt_tile_rotate_90_counter_clockwise(rt, pixbuf, x, rt->tile_height - y - h, w, h);
1102                         }
1103                         break;
1104                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1105                         /* rotated 90 */
1106                         {
1107                                 rt_tile_rotate_90_counter_clockwise(rt, pixbuf, x, y, w, h);
1108                         }
1109                         break;
1110                 default:
1111                         /* The other values are out of range */
1112                         break;
1113                 }
1114 }
1115
1116 static gboolean rt_source_tile_render(RendererTiles *rt, ImageTile *it,
1117                                       gint x, gint y, gint w, gint h,
1118                                       gboolean new_data, gboolean fast)
1119 {
1120         PixbufRenderer *pr = rt->pr;
1121         GtkWidget *box;
1122         GList *list;
1123         GList *work;
1124         gboolean draw = FALSE;
1125
1126         box = GTK_WIDGET(pr);
1127
1128         if (pr->zoom == 1.0 || pr->scale == 1.0)
1129                 {
1130                 list = pr_source_tile_compute_region(pr, it->x + x, it->y + y, w, h, TRUE);
1131                 work = list;
1132                 while (work)
1133                         {
1134                         SourceTile *st;
1135                         gint rx, ry, rw, rh;
1136
1137                         st = work->data;
1138                         work = work->next;
1139
1140                         if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1141                                            it->x + x, it->y + y, w, h,
1142                                            &rx, &ry, &rw, &rh))
1143                                 {
1144                                 if (st->blank)
1145                                         {
1146                                         gdk_draw_rectangle(it->pixmap, box->style->black_gc, TRUE,
1147                                                            rx - st->x, ry - st->y, rw, rh);
1148                                         }
1149                                 else /* (pr->zoom == 1.0 || pr->scale == 1.0) */
1150                                         {
1151                                         gdk_draw_pixbuf(it->pixmap,
1152 #if GTK_CHECK_VERSION(2,20,0)
1153                                                         box->style->fg_gc[gtk_widget_get_state(box)],
1154 #else
1155                                                         box->style->fg_gc[GTK_WIDGET_STATE(box)],
1156 #endif
1157                                                         st->pixbuf,
1158                                                         rx - st->x, ry - st->y,
1159                                                         rx - it->x, ry - it->y,
1160                                                         rw, rh,
1161                                                         pr->dither_quality, rx, ry);
1162                                         }
1163                                 }
1164                         }
1165                 }
1166         else
1167                 {
1168                 gdouble scale_x, scale_y;
1169                 gint sx, sy, sw, sh;
1170
1171                 if (pr->image_width == 0 || pr->image_height == 0) return FALSE;
1172                 scale_x = (gdouble)pr->width / pr->image_width;
1173                 scale_y = (gdouble)pr->height / pr->image_height;
1174
1175                 sx = (gdouble)(it->x + x) / scale_x;
1176                 sy = (gdouble)(it->y + y) / scale_y;
1177                 sw = (gdouble)w / scale_x;
1178                 sh = (gdouble)h / scale_y;
1179
1180                 if (pr->width < PR_MIN_SCALE_SIZE || pr->height < PR_MIN_SCALE_SIZE) fast = TRUE;
1181
1182 #if 0
1183                 /* draws red over draw region, to check for leaks (regions not filled) */
1184                 pixbuf_set_rect_fill(it->pixbuf, x, y, w, h, 255, 0, 0, 255);
1185 #endif
1186
1187                 list = pr_source_tile_compute_region(pr, sx, sy, sw, sh, TRUE);
1188                 work = list;
1189                 while (work)
1190                         {
1191                         SourceTile *st;
1192                         gint rx, ry, rw, rh;
1193                         gint stx, sty, stw, sth;
1194
1195                         st = work->data;
1196                         work = work->next;
1197
1198                         stx = floor((gdouble)st->x * scale_x);
1199                         sty = floor((gdouble)st->y * scale_y);
1200                         stw = ceil((gdouble)(st->x + pr->source_tile_width) * scale_x) - stx;
1201                         sth = ceil((gdouble)(st->y + pr->source_tile_height) * scale_y) - sty;
1202
1203                         if (pr_clip_region(stx, sty, stw, sth,
1204                                            it->x + x, it->y + y, w, h,
1205                                            &rx, &ry, &rw, &rh))
1206                                 {
1207                                 if (st->blank)
1208                                         {
1209                                         gdk_draw_rectangle(it->pixmap, box->style->black_gc, TRUE,
1210                                                            rx - st->x, ry - st->y, rw, rh);
1211                                         }
1212                                 else
1213                                         {
1214                                         gdouble offset_x;
1215                                         gdouble offset_y;
1216
1217                                         /* may need to use unfloored stx,sty values here */
1218                                         offset_x = (gdouble)(stx - it->x);
1219                                         offset_y = (gdouble)(sty - it->y);
1220
1221                                         gdk_pixbuf_scale(st->pixbuf, it->pixbuf, rx - it->x, ry - it->y, rw, rh,
1222                                                  (gdouble) 0.0 + offset_x,
1223                                                  (gdouble) 0.0 + offset_y,
1224                                                  scale_x, scale_y,
1225                                                  (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality);
1226                                         draw = TRUE;
1227                                         }
1228                                 }
1229                         }
1230                 }
1231
1232         g_list_free(list);
1233
1234         return draw;
1235 }
1236
1237 static void rt_tile_get_region(gboolean has_alpha,
1238                                const GdkPixbuf *src, GdkPixbuf *dest,
1239                                int pb_x, int pb_y, int pb_w, int pb_h,
1240                                double offset_x, double offset_y, double scale_x, double scale_y,
1241                                GdkInterpType interp_type,
1242                                int check_x, int check_y)
1243 {
1244         if (!has_alpha)
1245                 {
1246                 if (scale_x == 1.0 && scale_y == 1.0)
1247                         {
1248                         gdk_pixbuf_copy_area(src,
1249                                              -offset_x + pb_x, -offset_y + pb_y,
1250                                              pb_w, pb_h,
1251                                              dest,
1252                                              pb_x, pb_y);
1253                         }
1254                 else
1255                         {
1256                         gdk_pixbuf_scale(src, dest,
1257                                          pb_x, pb_y, pb_w, pb_h,
1258                                          offset_x,
1259                                          offset_y,
1260                                          scale_x, scale_y,
1261                                          interp_type);
1262                         }
1263                 }
1264         else
1265                 {
1266                 gdk_pixbuf_composite_color(src, dest,
1267                                          pb_x, pb_y, pb_w, pb_h,
1268                                          offset_x,
1269                                          offset_y,
1270                                          scale_x, scale_y,
1271                                          interp_type,
1272                                          255, check_x, check_y,
1273                                          PR_ALPHA_CHECK_SIZE, PR_ALPHA_CHECK1, PR_ALPHA_CHECK2);
1274                 }
1275 }
1276
1277
1278 static gint rt_get_orientation(RendererTiles *rt)
1279 {
1280         PixbufRenderer *pr = rt->pr;
1281
1282         gint orientation = pr->orientation;
1283         static const gint mirror[]       = {1,   2, 1, 4, 3, 6, 5, 8, 7};
1284         static const gint flip[]         = {1,   4, 3, 2, 1, 8, 7, 6, 5};
1285
1286         if (rt->stereo_mode & PR_STEREO_MIRROR) orientation = mirror[orientation];
1287         if (rt->stereo_mode & PR_STEREO_FLIP) orientation = flip[orientation];
1288         return orientation;
1289 }
1290
1291
1292 static void rt_tile_render(RendererTiles *rt, ImageTile *it,
1293                            gint x, gint y, gint w, gint h,
1294                            gboolean new_data, gboolean fast)
1295 {
1296         PixbufRenderer *pr = rt->pr;
1297         GtkWidget *box;
1298         gboolean has_alpha;
1299         gboolean draw = FALSE;
1300         gint orientation = rt_get_orientation(rt);
1301
1302         if (it->render_todo == TILE_RENDER_NONE && it->pixmap && !new_data) return;
1303
1304         if (it->render_done != TILE_RENDER_ALL)
1305                 {
1306                 x = 0;
1307                 y = 0;
1308                 w = it->w;
1309                 h = it->h;
1310                 if (!fast) it->render_done = TILE_RENDER_ALL;
1311                 }
1312         else if (it->render_todo != TILE_RENDER_AREA)
1313                 {
1314                 if (!fast) it->render_todo = TILE_RENDER_NONE;
1315                 return;
1316                 }
1317
1318         if (!fast) it->render_todo = TILE_RENDER_NONE;
1319
1320         if (new_data) it->blank = FALSE;
1321
1322         rt_tile_prepare(rt, it);
1323         has_alpha = (pr->pixbuf && gdk_pixbuf_get_has_alpha(pr->pixbuf));
1324
1325         box = GTK_WIDGET(pr);
1326
1327         /* FIXME checker colors for alpha should be configurable,
1328          * also should be drawn for blank = TRUE
1329          */
1330
1331         if (it->blank)
1332                 {
1333                 /* no data, do fast rect fill */
1334                 gdk_draw_rectangle(it->pixmap, box->style->black_gc, TRUE,
1335                                    0, 0, it->w, it->h);
1336                 }
1337         else if (pr->source_tiles_enabled)
1338                 {
1339                 draw = rt_source_tile_render(rt, it, x, y, w, h, new_data, fast);
1340                 }
1341         else if ((pr->zoom == 1.0 || pr->scale == 1.0) &&
1342                  pr->aspect_ratio == 1.0 &&
1343                  !has_alpha &&
1344                  orientation == EXIF_ORIENTATION_TOP_LEFT &&
1345                  !(pr->func_post_process && !(pr->post_process_slow && fast)) &&
1346                  !(rt->stereo_mode & PR_STEREO_ANAGLYPH))
1347                 {
1348                 /* special case: faster, simple, scale 1.0, base orientation, no postprocessing */
1349                 gdk_draw_pixbuf(it->pixmap,
1350 #if GTK_CHECK_VERSION(2,20,0)
1351                                 box->style->fg_gc[gtk_widget_get_state(box)],
1352 #else
1353                                 box->style->fg_gc[GTK_WIDGET_STATE(box)],
1354 #endif
1355                                 pr->pixbuf,
1356                                 it->x + x + GET_RIGHT_PIXBUF_OFFSET(rt), it->y + y,
1357                                 x, y,
1358                                 w, h,
1359                                 pr->dither_quality, it->x + x, it->y + y);
1360                 }
1361         else
1362                 {
1363                 gdouble scale_x, scale_y;
1364                 gdouble src_x, src_y;
1365                 gint pb_x, pb_y;
1366                 gint pb_w, pb_h;
1367
1368                 if (pr->image_width == 0 || pr->image_height == 0) return;
1369
1370                 scale_x = (gdouble)pr->width / pr->image_width;
1371                 scale_y = (gdouble)pr->height / pr->image_height;
1372
1373                 pr_tile_coords_map_orientation(orientation, it->x, it->y,
1374                                             pr->width, pr->height,
1375                                             rt->tile_width, rt->tile_height,
1376                                             &src_x, &src_y);
1377                 pr_tile_region_map_orientation(orientation, x, y,
1378                                             rt->tile_width, rt->tile_height,
1379                                             w, h,
1380                                             &pb_x, &pb_y,
1381                                             &pb_w, &pb_h);
1382
1383                 switch (orientation)
1384                         {
1385                         gdouble tmp;
1386                         case EXIF_ORIENTATION_LEFT_TOP:
1387                         case EXIF_ORIENTATION_RIGHT_TOP:
1388                         case EXIF_ORIENTATION_RIGHT_BOTTOM:
1389                         case EXIF_ORIENTATION_LEFT_BOTTOM:
1390                                 tmp = scale_x;
1391                                 scale_x = scale_y;
1392                                 scale_y = tmp;
1393                                 break;
1394                         default:
1395                                 /* nothing to do */
1396                                 break;
1397                         }
1398
1399                 /* HACK: The pixbuf scalers get kinda buggy(crash) with extremely
1400                  * small sizes for anything but GDK_INTERP_NEAREST
1401                  */
1402                 if (pr->width < PR_MIN_SCALE_SIZE || pr->height < PR_MIN_SCALE_SIZE) fast = TRUE;
1403
1404                 rt_tile_get_region(has_alpha,
1405                                    pr->pixbuf, it->pixbuf, pb_x, pb_y, pb_w, pb_h,
1406                                    (gdouble) 0.0 - src_x - GET_RIGHT_PIXBUF_OFFSET(rt) * scale_x,
1407                                    (gdouble) 0.0 - src_y,
1408                                    scale_x, scale_y,
1409                                    (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality,
1410                                    it->x + pb_x, it->y + pb_y);
1411                 if (rt->stereo_mode & PR_STEREO_ANAGLYPH &&
1412                     (pr->stereo_pixbuf_offset_right > 0 || pr->stereo_pixbuf_offset_left > 0))
1413                         {
1414                         GdkPixbuf *right_pb = rt_get_spare_tile(rt);
1415                         rt_tile_get_region(has_alpha,
1416                                            pr->pixbuf, right_pb, pb_x, pb_y, pb_w, pb_h,
1417                                            (gdouble) 0.0 - src_x - GET_LEFT_PIXBUF_OFFSET(rt) * scale_x,
1418                                            (gdouble) 0.0 - src_y,
1419                                            scale_x, scale_y,
1420                                            (fast) ? GDK_INTERP_NEAREST : pr->zoom_quality,
1421                                            it->x + pb_x, it->y + pb_y);
1422                         pr_create_anaglyph(rt->stereo_mode, it->pixbuf, right_pb, pb_x, pb_y, pb_w, pb_h);
1423                         /* do not care about freeing spare_tile, it will be reused */
1424                         }
1425                 rt_tile_apply_orientation(rt, orientation, &it->pixbuf, pb_x, pb_y, pb_w, pb_h);
1426                 draw = TRUE;
1427                 }
1428
1429         if (draw && it->pixbuf && !it->blank)
1430                 {
1431
1432                 if (pr->func_post_process && !(pr->post_process_slow && fast))
1433                         pr->func_post_process(pr, &it->pixbuf, x, y, w, h, pr->post_process_user_data);
1434
1435                 gdk_draw_pixbuf(it->pixmap,
1436 #if GTK_CHECK_VERSION(2,20,0)
1437                                 box->style->fg_gc[gtk_widget_get_state(box)],
1438 #else
1439                                 box->style->fg_gc[GTK_WIDGET_STATE(box)],
1440 #endif
1441                                 it->pixbuf,
1442                                 x, y,
1443                                 x, y,
1444                                 w, h,
1445                                 pr->dither_quality, it->x + x, it->y + y);
1446                 }
1447
1448 #if 0
1449         /* enable this line for debugging the edges of tiles */
1450         gdk_draw_rectangle(it->pixmap, box->style->white_gc,
1451                            FALSE, 0, 0, it->w, it->h);
1452         gdk_draw_rectangle(it->pixmap, box->style->white_gc,
1453                            FALSE, x, y, w, h);
1454 #endif
1455 }
1456
1457
1458 static void rt_tile_expose(RendererTiles *rt, ImageTile *it,
1459                            gint x, gint y, gint w, gint h,
1460                            gboolean new_data, gboolean fast)
1461 {
1462         PixbufRenderer *pr = rt->pr;
1463         GtkWidget *box;
1464
1465         /* clamp to visible */
1466         if (it->x + x < rt->x_scroll)
1467                 {
1468                 w -= rt->x_scroll - it->x - x;
1469                 x = rt->x_scroll - it->x;
1470                 }
1471         if (it->x + x + w > rt->x_scroll + pr->vis_width)
1472                 {
1473                 w = rt->x_scroll + pr->vis_width - it->x - x;
1474                 }
1475         if (w < 1) return;
1476         if (it->y + y < rt->y_scroll)
1477                 {
1478                 h -= rt->y_scroll - it->y - y;
1479                 y = rt->y_scroll - it->y;
1480                 }
1481         if (it->y + y + h > rt->y_scroll + pr->vis_height)
1482                 {
1483                 h = rt->y_scroll + pr->vis_height - it->y - y;
1484                 }
1485         if (h < 1) return;
1486
1487         rt_tile_render(rt, it, x, y, w, h, new_data, fast);
1488
1489         box = GTK_WIDGET(pr);
1490
1491 #if GTK_CHECK_VERSION(2,20,0)
1492         gdk_draw_drawable(box->window, box->style->fg_gc[gtk_widget_get_state(box)],
1493 #else
1494         gdk_draw_drawable(box->window, box->style->fg_gc[GTK_WIDGET_STATE(box)],
1495 #endif
1496                           it->pixmap, x, y,
1497                           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);
1498
1499         if (rt->overlay_list)
1500                 {
1501                 rt_overlay_draw(rt, pr->x_offset + (it->x - rt->x_scroll) + x,
1502                                 pr->y_offset + (it->y - rt->y_scroll) + y,
1503                                 w, h,
1504                                 it);
1505                 }
1506 }
1507
1508
1509 static gboolean rt_tile_is_visible(RendererTiles *rt, ImageTile *it)
1510 {
1511         PixbufRenderer *pr = rt->pr;
1512         return (it->x + it->w >= rt->x_scroll && it->x < rt->x_scroll + pr->vis_width &&
1513                 it->y + it->h >= rt->y_scroll && it->y < rt->y_scroll + pr->vis_height);
1514 }
1515
1516 /*
1517  *-------------------------------------------------------------------
1518  * draw queue
1519  *-------------------------------------------------------------------
1520  */
1521
1522 static gint rt_get_queued_area(GList *work)
1523 {
1524         gint area = 0;
1525
1526         while (work)
1527                 {
1528                 QueueData *qd = work->data;
1529                 area += qd->w * qd->h;
1530                 work = work->next;
1531                 }
1532         return area;
1533 }
1534
1535
1536 static gboolean rt_queue_schedule_next_draw(RendererTiles *rt, gboolean force_set)
1537 {
1538         PixbufRenderer *pr = rt->pr;
1539         gfloat percent;
1540         gint visible_area = pr->vis_width * pr->vis_height;
1541
1542         if (!pr->loading)
1543                 {
1544                 /* 2pass prio */
1545                 DEBUG_2("redraw priority: 2pass");
1546                 rt->draw_idle_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, rt_queue_draw_idle_cb, rt, NULL);
1547                 return FALSE;
1548                 }
1549
1550         if (visible_area == 0)
1551                 {
1552                 /* not known yet */
1553                 percent = 100.0;
1554                 }
1555         else
1556                 {
1557                 percent = 100.0 * rt_get_queued_area(rt->draw_queue) / visible_area;
1558                 }
1559
1560         if (percent > 10.0)
1561                 {
1562                 /* we have enough data for starting intensive redrawing */
1563                 DEBUG_2("redraw priority: high %.2f %%", percent);
1564                 rt->draw_idle_id = g_idle_add_full(GDK_PRIORITY_REDRAW, rt_queue_draw_idle_cb, rt, NULL);
1565                 return FALSE;
1566                 }
1567
1568         if (percent < 1.0 || force_set)
1569                 {
1570                 /* queue is (almost) empty, wait  50 ms*/
1571                 DEBUG_2("redraw priority: wait %.2f %%", percent);
1572                 rt->draw_idle_id = g_timeout_add_full(G_PRIORITY_DEFAULT_IDLE, 50, rt_queue_draw_idle_cb, rt, NULL);
1573                 return FALSE;
1574                 }
1575
1576         /* keep the same priority as before */
1577         DEBUG_2("redraw priority: no change %.2f %%", percent);
1578         return TRUE;
1579 }
1580
1581
1582 static gboolean rt_queue_draw_idle_cb(gpointer data)
1583 {
1584         RendererTiles *rt = data;
1585         PixbufRenderer *pr = rt->pr;
1586         QueueData *qd;
1587         gboolean fast;
1588
1589
1590         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
1591             (!rt->draw_queue && !rt->draw_queue_2pass) ||
1592             !rt->draw_idle_id)
1593                 {
1594                 pr_render_complete_signal(pr);
1595
1596                 rt->draw_idle_id = 0;
1597                 return FALSE;
1598                 }
1599
1600         if (rt->draw_queue)
1601                 {
1602                 qd = rt->draw_queue->data;
1603                 fast = (pr->zoom_2pass && ((pr->zoom_quality != GDK_INTERP_NEAREST && pr->scale != 1.0) || pr->post_process_slow));
1604                 }
1605         else
1606                 {
1607                 if (pr->loading)
1608                         {
1609                         /* still loading, wait till done (also drops the higher priority) */
1610
1611                         return rt_queue_schedule_next_draw(rt, FALSE);
1612                         }
1613
1614                 qd = rt->draw_queue_2pass->data;
1615                 fast = FALSE;
1616                 }
1617
1618 #if GTK_CHECK_VERSION(2,20,0)
1619         if (gtk_widget_get_realized(pr))
1620 #else
1621         if (GTK_WIDGET_REALIZED(pr))
1622 #endif
1623                 {
1624                 if (rt_tile_is_visible(rt, qd->it))
1625                         {
1626                         rt_tile_expose(rt, qd->it, qd->x, qd->y, qd->w, qd->h, qd->new_data, fast);
1627                         }
1628                 else if (qd->new_data)
1629                         {
1630                         /* if new pixel data, and we already have a pixmap, update the tile */
1631                         qd->it->blank = FALSE;
1632                         if (qd->it->pixmap && qd->it->render_done == TILE_RENDER_ALL)
1633                                 {
1634                                 rt_tile_render(rt, qd->it, qd->x, qd->y, qd->w, qd->h, qd->new_data, fast);
1635                                 }
1636                         }
1637                 }
1638
1639         if (rt->draw_queue)
1640                 {
1641                 qd->it->qd = NULL;
1642                 rt->draw_queue = g_list_remove(rt->draw_queue, qd);
1643                 if (fast)
1644                         {
1645                         if (qd->it->qd2)
1646                                 {
1647                                 rt_queue_merge(qd->it->qd2, qd);
1648                                 g_free(qd);
1649                                 }
1650                         else
1651                                 {
1652                                 qd->it->qd2 = qd;
1653                                 rt->draw_queue_2pass = g_list_append(rt->draw_queue_2pass, qd);
1654                                 }
1655                         }
1656                 else
1657                         {
1658                         g_free(qd);
1659                         }
1660                 }
1661         else
1662                 {
1663                 qd->it->qd2 = NULL;
1664                 rt->draw_queue_2pass = g_list_remove(rt->draw_queue_2pass, qd);
1665                 g_free(qd);
1666                 }
1667
1668         if (!rt->draw_queue && !rt->draw_queue_2pass)
1669                 {
1670                 pr_render_complete_signal(pr);
1671
1672                 rt->draw_idle_id = 0;
1673                 return FALSE;
1674                 }
1675
1676                 return rt_queue_schedule_next_draw(rt, FALSE);
1677 }
1678
1679 static void rt_queue_list_free(GList *list)
1680 {
1681         GList *work;
1682
1683         work = list;
1684         while (work)
1685                 {
1686                 QueueData *qd;
1687
1688                 qd = work->data;
1689                 work = work->next;
1690
1691                 qd->it->qd = NULL;
1692                 qd->it->qd2 = NULL;
1693                 g_free(qd);
1694                 }
1695
1696         g_list_free(list);
1697 }
1698
1699 static void rt_queue_clear(RendererTiles *rt)
1700 {
1701         rt_queue_list_free(rt->draw_queue);
1702         rt->draw_queue = NULL;
1703
1704         rt_queue_list_free(rt->draw_queue_2pass);
1705         rt->draw_queue_2pass = NULL;
1706
1707         if (rt->draw_idle_id)
1708                 {
1709                 g_source_remove(rt->draw_idle_id);
1710                 rt->draw_idle_id = 0;
1711                 }
1712         rt_sync_scroll(rt);
1713 }
1714
1715 static void rt_queue_merge(QueueData *parent, QueueData *qd)
1716 {
1717         if (parent->x + parent->w < qd->x + qd->w)
1718                 {
1719                 parent->w += (qd->x + qd->w) - (parent->x + parent->w);
1720                 }
1721         if (parent->x > qd->x)
1722                 {
1723                 parent->w += parent->x - qd->x;
1724                 parent->x = qd->x;
1725                 }
1726
1727         if (parent->y + parent->h < qd->y + qd->h)
1728                 {
1729                 parent->h += (qd->y + qd->h) - (parent->y + parent->h);
1730                 }
1731         if (parent->y > qd->y)
1732                 {
1733                 parent->h += parent->y - qd->y;
1734                 parent->y = qd->y;
1735                 }
1736
1737         parent->new_data |= qd->new_data;
1738 }
1739
1740 static gboolean rt_clamp_to_visible(RendererTiles *rt, gint *x, gint *y, gint *w, gint *h)
1741 {
1742         PixbufRenderer *pr = rt->pr;
1743         gint nx, ny;
1744         gint nw, nh;
1745         gint vx, vy;
1746         gint vw, vh;
1747
1748         vw = pr->vis_width;
1749         vh = pr->vis_height;
1750
1751         vx = rt->x_scroll;
1752         vy = rt->y_scroll;
1753
1754         if (*x + *w < vx || *x > vx + vw || *y + *h < vy || *y > vy + vh) return FALSE;
1755
1756         /* now clamp it */
1757         nx = CLAMP(*x, vx, vx + vw);
1758         nw = CLAMP(*w - (nx - *x), 1, vw);
1759
1760         ny = CLAMP(*y, vy, vy + vh);
1761         nh = CLAMP(*h - (ny - *y), 1, vh);
1762
1763         *x = nx;
1764         *y = ny;
1765         *w = nw;
1766         *h = nh;
1767
1768         return TRUE;
1769 }
1770
1771 static gboolean rt_queue_to_tiles(RendererTiles *rt, gint x, gint y, gint w, gint h,
1772                                   gboolean clamp, ImageRenderType render,
1773                                   gboolean new_data, gboolean only_existing)
1774 {
1775         PixbufRenderer *pr = rt->pr;
1776         gint i, j;
1777         gint x1, x2;
1778         gint y1, y2;
1779
1780         if (clamp && !rt_clamp_to_visible(rt, &x, &y, &w, &h)) return FALSE;
1781
1782         x1 = ROUND_DOWN(x, rt->tile_width);
1783         x2 = ROUND_UP(x + w, rt->tile_width);
1784
1785         y1 = ROUND_DOWN(y, rt->tile_height);
1786         y2 = ROUND_UP(y + h, rt->tile_height);
1787
1788         for (j = y1; j <= y2; j += rt->tile_height)
1789                 {
1790                 for (i = x1; i <= x2; i += rt->tile_width)
1791                         {
1792                         ImageTile *it;
1793
1794                         it = rt_tile_get(rt, i, j,
1795                                          (only_existing &&
1796                                           (i + rt->tile_width < rt->x_scroll ||
1797                                            i > rt->x_scroll + pr->vis_width ||
1798                                            j + rt->tile_height < rt->y_scroll ||
1799                                            j > rt->y_scroll + pr->vis_height)));
1800                         if (it)
1801                                 {
1802                                 QueueData *qd;
1803
1804                                 if ((render == TILE_RENDER_ALL && it->render_done != TILE_RENDER_ALL) ||
1805                                     (render == TILE_RENDER_AREA && it->render_todo != TILE_RENDER_ALL))
1806                                         {
1807                                         it->render_todo = render;
1808                                         }
1809
1810                                 qd = g_new(QueueData, 1);
1811                                 qd->it = it;
1812                                 qd->new_data = new_data;
1813
1814                                 if (i < x)
1815                                         {
1816                                         qd->x = x - i;
1817                                         }
1818                                 else
1819                                         {
1820                                         qd->x = 0;
1821                                         }
1822                                 qd->w = x + w - i - qd->x;
1823                                 if (qd->x + qd->w > rt->tile_width) qd->w = rt->tile_width - qd->x;
1824
1825                                 if (j < y)
1826                                         {
1827                                         qd->y = y - j;
1828                                         }
1829                                 else
1830                                         {
1831                                         qd->y = 0;
1832                                         }
1833                                 qd->h = y + h - j - qd->y;
1834                                 if (qd->y + qd->h > rt->tile_height) qd->h = rt->tile_height - qd->y;
1835
1836                                 if (qd->w < 1 || qd->h < 1)
1837                                         {
1838                                         g_free(qd);
1839                                         }
1840                                 else if (it->qd)
1841                                         {
1842                                         rt_queue_merge(it->qd, qd);
1843                                         g_free(qd);
1844                                         }
1845                                 else
1846                                         {
1847                                         it->qd = qd;
1848                                         rt->draw_queue = g_list_append(rt->draw_queue, qd);
1849                                         }
1850                                 }
1851                         }
1852                 }
1853
1854         return TRUE;
1855 }
1856
1857 static void rt_queue(RendererTiles *rt, gint x, gint y, gint w, gint h,
1858                      gboolean clamp, ImageRenderType render,
1859                      gboolean new_data, gboolean only_existing)
1860 {
1861         PixbufRenderer *pr = rt->pr;
1862         gint nx, ny;
1863
1864         rt_sync_scroll(rt);
1865
1866         nx = CLAMP(x, 0, pr->width - 1);
1867         ny = CLAMP(y, 0, pr->height - 1);
1868         w -= (nx - x);
1869         h -= (ny - y);
1870         w = CLAMP(w, 0, pr->width - nx);
1871         h = CLAMP(h, 0, pr->height - ny);
1872         if (w < 1 || h < 1) return;
1873
1874         if (rt_queue_to_tiles(rt, nx, ny, w, h, clamp, render, new_data, only_existing) &&
1875             ((!rt->draw_queue && !rt->draw_queue_2pass) || !rt->draw_idle_id))
1876                 {
1877                 if (rt->draw_idle_id)
1878                         {
1879                         g_source_remove(rt->draw_idle_id);
1880                         rt->draw_idle_id = 0;
1881                         }
1882                 rt_queue_schedule_next_draw(rt, TRUE);
1883                 }
1884 }
1885
1886 static void rt_scroll(RendererTiles *rt, gint x_off, gint y_off)
1887 {
1888         PixbufRenderer *pr = rt->pr;
1889
1890         rt_sync_scroll(rt);
1891         if (rt->stereo_mode & PR_STEREO_MIRROR) x_off = -x_off;
1892         if (rt->stereo_mode & PR_STEREO_FLIP) y_off = -y_off;
1893
1894         gint w = pr->vis_width - abs(x_off);
1895         gint h = pr->vis_height - abs(y_off);
1896
1897         if (w < 1 || h < 1)
1898                 {
1899                 /* scrolled completely to new material */
1900                 rt_queue(rt, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1901                 return;
1902                 }
1903         else
1904                 {
1905                 gint x1, y1;
1906                 gint x2, y2;
1907                 GtkWidget *box;
1908                 GdkGC *gc;
1909                 GdkEvent *event;
1910
1911                 if (x_off < 0)
1912                         {
1913                         x1 = abs(x_off);
1914                         x2 = 0;
1915                         }
1916                 else
1917                         {
1918                         x1 = 0;
1919                         x2 = abs(x_off);
1920                         }
1921
1922                 if (y_off < 0)
1923                         {
1924                         y1 = abs(y_off);
1925                         y2 = 0;
1926                         }
1927                 else
1928                         {
1929                         y1 = 0;
1930                         y2 = abs(y_off);
1931                         }
1932
1933                 box = GTK_WIDGET(pr);
1934
1935                 gc = gdk_gc_new(box->window);
1936                 gdk_gc_set_exposures(gc, TRUE);
1937                 gdk_draw_drawable(box->window, gc,
1938                                   box->window,
1939                                   x2 + pr->x_offset + rt->stereo_off_x, y2 + pr->y_offset + rt->stereo_off_y,
1940                                   x1 + pr->x_offset + rt->stereo_off_x, y1 + pr->y_offset + rt->stereo_off_y, w, h);
1941                 g_object_unref(gc);
1942
1943                 rt_overlay_queue_all(rt, x2, y2, x1, y1);
1944
1945                 w = pr->vis_width - w;
1946                 h = pr->vis_height - h;
1947
1948                 if (w > 0)
1949                         {
1950                         rt_queue(rt,
1951                                     x_off > 0 ? rt->x_scroll + (pr->vis_width - w) : rt->x_scroll, rt->y_scroll,
1952                                     w, pr->vis_height, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1953                         }
1954                 if (h > 0)
1955                         {
1956                         /* FIXME, to optimize this, remove overlap */
1957                         rt_queue(rt,
1958                                     rt->x_scroll, y_off > 0 ? rt->y_scroll + (pr->vis_height - h) : rt->y_scroll,
1959                                     pr->vis_width, h, TRUE, TILE_RENDER_ALL, FALSE, FALSE);
1960                         }
1961
1962                 /* process exposures here, "expose_event" seems to miss a few with obstructed windows */
1963 #if ! GTK_CHECK_VERSION(2,18,0)
1964                 while ((event = gdk_event_get_graphics_expose(box->window)) != NULL)
1965                         {
1966                         pixbuf_renderer_paint(pr, &event->expose.area);
1967
1968                         if (event->expose.count == 0)
1969                                 {
1970                                 gdk_event_free(event);
1971                                 break;
1972                                 }
1973                         gdk_event_free(event);
1974                         }
1975 #endif
1976                 }
1977 }
1978
1979 static void renderer_area_changed(void *renderer, gint src_x, gint src_y, gint src_w, gint src_h)
1980 {
1981         RendererTiles *rt = (RendererTiles *)renderer;
1982         PixbufRenderer *pr = rt->pr;
1983         gint x, y, width, height,  x1, y1, x2, y2;
1984
1985         gint orientation = rt_get_orientation(rt);
1986         pr_coords_map_orientation_reverse(orientation,
1987                                      src_x - GET_RIGHT_PIXBUF_OFFSET(rt), src_y,
1988                                      pr->image_width, pr->image_height,
1989                                      src_w, src_h,
1990                                      &x, &y,
1991                                      &width, &height);
1992
1993         if (pr->scale != 1.0 && pr->zoom_quality != GDK_INTERP_NEAREST)
1994                 {
1995                 /* increase region when using a zoom quality that may access surrounding pixels */
1996                 y -= 1;
1997                 height += 2;
1998                 }
1999
2000         x1 = (gint)floor((gdouble)x * pr->scale);
2001         y1 = (gint)floor((gdouble)y * pr->scale * pr->aspect_ratio);
2002         x2 = (gint)ceil((gdouble)(x + width) * pr->scale);
2003         y2 = (gint)ceil((gdouble)(y + height) * pr->scale * pr->aspect_ratio);
2004
2005         rt_queue(rt, x1, y1, x2 - x1, y2 - y1, FALSE, TILE_RENDER_AREA, TRUE, TRUE);
2006 }
2007
2008 static void renderer_redraw(void *renderer, gint x, gint y, gint w, gint h,
2009                      gint clamp, ImageRenderType render, gboolean new_data, gboolean only_existing)
2010 {
2011         RendererTiles *rt = (RendererTiles *)renderer;
2012         PixbufRenderer *pr = rt->pr;
2013
2014         x -= rt->stereo_off_x;
2015         y -= rt->stereo_off_y;
2016
2017         rt_border_draw(rt, x, y, w, h);
2018
2019         x = MAX(0, x - pr->x_offset + pr->x_scroll);
2020         y = MAX(0, y - pr->y_offset + pr->y_scroll);
2021
2022         rt_queue(rt,
2023                  x, y,
2024                  MIN(w, pr->width - x),
2025                  MIN(h, pr->height - y),
2026                  clamp, render, new_data, only_existing);
2027 }
2028
2029 static void renderer_queue_clear(void *renderer)
2030 {
2031         rt_queue_clear((RendererTiles *)renderer);
2032 }
2033
2034 static void renderer_border_clear(void *renderer)
2035 {
2036         rt_border_clear((RendererTiles *)renderer);
2037 }
2038
2039
2040 static void renderer_invalidate_all(void *renderer)
2041 {
2042         rt_tile_invalidate_all((RendererTiles *)renderer);
2043 }
2044
2045 static void renderer_invalidate_region(void *renderer, gint x, gint y, gint w, gint h)
2046 {
2047         rt_tile_invalidate_region((RendererTiles *)renderer, x, y, w, h);
2048 }
2049
2050 static void renderer_overlay_draw(void *renderer, gint x, gint y, gint w, gint h)
2051 {
2052         rt_overlay_draw((RendererTiles *)renderer, x, y, w, h, NULL);
2053 }
2054
2055 static void renderer_update_sizes(void *renderer)
2056 {
2057         RendererTiles *rt = (RendererTiles *)renderer;
2058
2059         rt->stereo_off_x = 0;
2060         rt->stereo_off_y = 0;
2061
2062         if (rt->stereo_mode & PR_STEREO_RIGHT)
2063                 {
2064                 if (rt->stereo_mode & PR_STEREO_HORIZ)
2065                         {
2066                         rt->stereo_off_x = rt->pr->viewport_width;
2067                         }
2068                 else if (rt->stereo_mode & PR_STEREO_VERT)
2069                         {
2070                         rt->stereo_off_y = rt->pr->viewport_height;
2071                         }
2072                 else if (rt->stereo_mode & PR_STEREO_FIXED)
2073                         {
2074                         rt->stereo_off_x = rt->pr->stereo_fixed_x_right;
2075                         rt->stereo_off_y = rt->pr->stereo_fixed_y_right;
2076                         }
2077                 }
2078         else
2079                 {
2080                 if (rt->stereo_mode & PR_STEREO_FIXED)
2081                         {
2082                         rt->stereo_off_x = rt->pr->stereo_fixed_x_left;
2083                         rt->stereo_off_y = rt->pr->stereo_fixed_y_left;
2084                         }
2085                 }
2086         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);
2087         rt_sync_scroll(rt);
2088         rt_overlay_update_sizes(rt);
2089 }
2090
2091 static void renderer_stereo_set(void *renderer, gint stereo_mode)
2092 {
2093         RendererTiles *rt = (RendererTiles *)renderer;
2094
2095         rt->stereo_mode = stereo_mode;
2096 }
2097
2098 static void renderer_free(void *renderer)
2099 {
2100         RendererTiles *rt = (RendererTiles *)renderer;
2101         rt_queue_clear(rt);
2102         rt_tile_free_all(rt);
2103         if (rt->spare_tile) g_object_unref(rt->spare_tile);
2104         if (rt->overlay_buffer) g_object_unref(rt->overlay_buffer);
2105         rt_overlay_list_clear(rt);
2106         /* disconnect "hierarchy-changed" */
2107         g_signal_handlers_disconnect_matched(G_OBJECT(rt->pr), G_SIGNAL_MATCH_DATA,
2108                                                      0, 0, 0, NULL, rt);
2109         g_free(rt);
2110 }
2111
2112 RendererFuncs *renderer_tiles_new(PixbufRenderer *pr)
2113 {
2114         RendererTiles *rt = g_new0(RendererTiles, 1);
2115
2116         rt->pr = pr;
2117
2118         rt->f.redraw = renderer_redraw;
2119         rt->f.area_changed = renderer_area_changed;
2120         rt->f.queue_clear = renderer_queue_clear;
2121         rt->f.border_clear = renderer_border_clear;
2122         rt->f.free = renderer_free;
2123         rt->f.invalidate_all = renderer_invalidate_all;
2124         rt->f.invalidate_region = renderer_invalidate_region;
2125         rt->f.scroll = rt_scroll;
2126         rt->f.update_sizes = renderer_update_sizes;
2127
2128
2129         rt->f.overlay_add = renderer_tiles_overlay_add;
2130         rt->f.overlay_set = renderer_tiles_overlay_set;
2131         rt->f.overlay_get = renderer_tiles_overlay_get;
2132         rt->f.overlay_draw = renderer_overlay_draw;
2133
2134         rt->f.stereo_set = renderer_stereo_set;
2135
2136         rt->tile_width = PR_TILE_SIZE;
2137         rt->tile_height = PR_TILE_SIZE;
2138
2139         rt->tiles = NULL;
2140         rt->tile_cache_size = 0;
2141
2142         rt->tile_cache_max = PR_CACHE_SIZE_DEFAULT;
2143
2144         rt->draw_idle_id = 0;
2145
2146         rt->stereo_mode = 0;
2147         rt->stereo_off_x = 0;
2148         rt->stereo_off_y = 0;
2149
2150         g_signal_connect(G_OBJECT(pr), "hierarchy-changed",
2151                          G_CALLBACK(rt_hierarchy_changed_cb), rt);
2152
2153         return (RendererFuncs *) rt;
2154 }
2155
2156
2157 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */