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