src/renderer-tiles.c

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