src/pixbuf-renderer.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <math.h>
  26
  27 #include "main.h"
  28 #include "pixbuf-renderer.h"
  29 #include "renderer-tiles.h"
  30 #include "renderer-clutter.h"
  31
  32 #include "intl.h"
  33 #include "layout.h"
  34
  35 #include <gtk/gtk.h>
  36
  37 /* comment this out if not using this from within Geeqie
  38  * defining GQ_BUILD does these things:
  39  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  40  */
  41 #define GQ_BUILD 1
  42
  43 #ifdef GQ_BUILD
  44 #include "main.h"
  45 #include "pixbuf_util.h"
  46 #include "exif.h"
  47 #else
  48 typedef enum {
  49         EXIF_ORIENTATION_UNKNOWN        = 0,
  50         EXIF_ORIENTATION_TOP_LEFT       = 1,
  51         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  52         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  53         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  54         EXIF_ORIENTATION_LEFT_TOP       = 5,
  55         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  56         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  57         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  58 } ExifOrientationType;
  59 #endif
  60
  61
  62 /* default min and max zoom */
  63 #define PR_ZOOM_MIN -32.0
  64 #define PR_ZOOM_MAX 32.0
  65
  66 /* distance to drag mouse to disable image flip */
  67 #define PR_DRAG_SCROLL_THRESHHOLD 4
  68
  69 /* increase pan rate when holding down shift */
  70 #define PR_PAN_SHIFT_MULTIPLIER 6
  71
  72 /* scroller config */
  73 #define PR_SCROLLER_UPDATES_PER_SEC 30
  74 #define PR_SCROLLER_DEAD_ZONE 6
  75
  76 /* when scaling image to below this size, use nearest pixel for scaling
  77  * (below about 4, the other scale types become slow generating their conversion tables)
  78  */
  79 #define PR_MIN_SCALE_SIZE 8
  80
  81 enum {
  82         SIGNAL_ZOOM = 0,
  83         SIGNAL_CLICKED,
  84         SIGNAL_SCROLL_NOTIFY,
  85         SIGNAL_RENDER_COMPLETE,
  86         SIGNAL_DRAG,
  87         SIGNAL_UPDATE_PIXEL,
  88         SIGNAL_COUNT
  89 };
  90
  91 enum {
  92         PROP_0,
  93         PROP_ZOOM_MIN,
  94         PROP_ZOOM_MAX,
  95         PROP_ZOOM_QUALITY,
  96         PROP_ZOOM_2PASS,
  97         PROP_ZOOM_EXPAND,
  98         PROP_SCROLL_RESET,
  99         PROP_DELAY_FLIP,
 100         PROP_LOADING,
 101         PROP_COMPLETE,
 102         PROP_CACHE_SIZE_DISPLAY,
 103         PROP_CACHE_SIZE_TILES,
 104         PROP_WINDOW_FIT,
 105         PROP_WINDOW_LIMIT,
 106         PROP_WINDOW_LIMIT_VALUE,
 107         PROP_AUTOFIT_LIMIT,
 108         PROP_AUTOFIT_LIMIT_VALUE,
 109         PROP_ENLARGEMENT_LIMIT_VALUE
 110 };
 111
 112 typedef enum {
 113         PR_ZOOM_NONE            = 0,
 114         PR_ZOOM_FORCE           = 1 << 0,
 115         PR_ZOOM_NEW             = 1 << 1,
 116         PR_ZOOM_CENTER          = 1 << 2,
 117         PR_ZOOM_INVALIDATE      = 1 << 3,
 118         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 119 } PrZoomFlags;
 120
 121 static guint signals[SIGNAL_COUNT] = { 0 };
 122 static GtkEventBoxClass *parent_class = NULL;
 123
 124
 125
 126 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 127 static void pixbuf_renderer_init(PixbufRenderer *pr);
 128 static void pixbuf_renderer_finalize(GObject *object);
 129 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 130                                          const GValue *value, GParamSpec *pspec);
 131 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 132                                          GValue *value, GParamSpec *pspec);
 133 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 134
 135
 136 static void pr_source_tile_free_all(PixbufRenderer *pr);
 137
 138 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 139                          PrZoomFlags flags, gint px, gint py);
 140
 141 static void pr_signals_connect(PixbufRenderer *pr);
 142 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 143 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 144
 145
 146 /*
 147  *-------------------------------------------------------------------
 148  * Pixbuf Renderer object
 149  *-------------------------------------------------------------------
 150  */
 151
 152 static void pixbuf_renderer_class_init_wrapper(void *g_class, void *class_data)
 153 {
 154         pixbuf_renderer_class_init(g_class);
 155 }
 156
 157 static void pixbuf_renderer_init_wrapper(PixbufRenderer *pr, void *class_data)
 158 {
 159         pixbuf_renderer_init(pr);
 160 }
 161
 162 GType pixbuf_renderer_get_type(void)
 163 {
 164         static GType pixbuf_renderer_type = 0;
 165
 166         if (!pixbuf_renderer_type)
 167                 {
 168                 static const GTypeInfo pixbuf_renderer_info =
 169                         {
 170                         sizeof(PixbufRendererClass), /* class_size */
 171                         NULL,           /* base_init */
 172                         NULL,           /* base_finalize */
 173                         (GClassInitFunc)pixbuf_renderer_class_init_wrapper,
 174                         NULL,           /* class_finalize */
 175                         NULL,           /* class_data */
 176                         sizeof(PixbufRenderer), /* instance_size */
 177                         0,              /* n_preallocs */
 178                         (GInstanceInitFunc)pixbuf_renderer_init_wrapper, /* instance_init */
 179                         NULL,           /* value_table */
 180                         };
 181
 182                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 183                                                               &pixbuf_renderer_info, 0);
 184                 }
 185
 186         return pixbuf_renderer_type;
 187 }
 188
 189 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 190 {
 191         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 192
 193         parent_class = g_type_class_peek_parent(class);
 194
 195         gobject_class->set_property = pixbuf_renderer_set_property;
 196         gobject_class->get_property = pixbuf_renderer_get_property;
 197
 198         gobject_class->finalize = pixbuf_renderer_finalize;
 199
 200         g_object_class_install_property(gobject_class,
 201                                         PROP_ZOOM_MIN,
 202                                         g_param_spec_double("zoom_min",
 203                                                             "Zoom minimum",
 204                                                             NULL,
 205                                                             -1000.0,
 206                                                             1000.0,
 207                                                             PR_ZOOM_MIN,
 208                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 209
 210         g_object_class_install_property(gobject_class,
 211                                         PROP_ZOOM_MAX,
 212                                         g_param_spec_double("zoom_max",
 213                                                             "Zoom maximum",
 214                                                             NULL,
 215                                                             -1000.0,
 216                                                             1000.0,
 217                                                             PR_ZOOM_MIN,
 218                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 219
 220         g_object_class_install_property(gobject_class,
 221                                         PROP_ZOOM_QUALITY,
 222                                         g_param_spec_uint("zoom_quality",
 223                                                           "Zoom quality",
 224                                                           NULL,
 225                                                           GDK_INTERP_NEAREST,
 226                                                           GDK_INTERP_BILINEAR,
 227                                                           GDK_INTERP_BILINEAR,
 228                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 229
 230         g_object_class_install_property(gobject_class,
 231                                         PROP_ZOOM_2PASS,
 232                                         g_param_spec_boolean("zoom_2pass",
 233                                                              "2 pass zoom",
 234                                                              NULL,
 235                                                              TRUE,
 236                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 237
 238         g_object_class_install_property(gobject_class,
 239                                         PROP_ZOOM_EXPAND,
 240                                         g_param_spec_boolean("zoom_expand",
 241                                                              "Expand image in autozoom.",
 242                                                              NULL,
 243                                                              FALSE,
 244                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 245         g_object_class_install_property(gobject_class,
 246                                         PROP_SCROLL_RESET,
 247                                         g_param_spec_uint("scroll_reset",
 248                                                           "New image scroll reset",
 249                                                           NULL,
 250                                                           PR_SCROLL_RESET_TOPLEFT,
 251                                                           PR_SCROLL_RESET_NOCHANGE,
 252                                                           PR_SCROLL_RESET_TOPLEFT,
 253                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 254
 255         g_object_class_install_property(gobject_class,
 256                                         PROP_DELAY_FLIP,
 257                                         g_param_spec_boolean("delay_flip",
 258                                                              "Delay image update",
 259                                                              NULL,
 260                                                              FALSE,
 261                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 262
 263         g_object_class_install_property(gobject_class,
 264                                         PROP_LOADING,
 265                                         g_param_spec_boolean("loading",
 266                                                              "Image actively loading",
 267                                                              NULL,
 268                                                              FALSE,
 269                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 270
 271         g_object_class_install_property(gobject_class,
 272                                         PROP_COMPLETE,
 273                                         g_param_spec_boolean("complete",
 274                                                              "Image rendering complete",
 275                                                              NULL,
 276                                                              FALSE,
 277                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279         g_object_class_install_property(gobject_class,
 280                                         PROP_CACHE_SIZE_DISPLAY,
 281                                         g_param_spec_uint("cache_display",
 282                                                           "Display cache size MiB",
 283                                                           NULL,
 284                                                           0,
 285                                                           128,
 286                                                           PR_CACHE_SIZE_DEFAULT,
 287                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 288
 289         g_object_class_install_property(gobject_class,
 290                                         PROP_CACHE_SIZE_TILES,
 291                                         g_param_spec_uint("cache_tiles",
 292                                                           "Tile cache count",
 293                                                           "Number of tiles to retain in memory at any one time.",
 294                                                           0,
 295                                                           256,
 296                                                           PR_CACHE_SIZE_DEFAULT,
 297                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 298
 299         g_object_class_install_property(gobject_class,
 300                                         PROP_WINDOW_FIT,
 301                                         g_param_spec_boolean("window_fit",
 302                                                              "Fit window to image size",
 303                                                              NULL,
 304                                                              FALSE,
 305                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 306
 307         g_object_class_install_property(gobject_class,
 308                                         PROP_WINDOW_LIMIT,
 309                                         g_param_spec_boolean("window_limit",
 310                                                              "Limit size of parent window",
 311                                                              NULL,
 312                                                              FALSE,
 313                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 314
 315         g_object_class_install_property(gobject_class,
 316                                         PROP_WINDOW_LIMIT_VALUE,
 317                                         g_param_spec_uint("window_limit_value",
 318                                                           "Size limit of parent window",
 319                                                           NULL,
 320                                                           10,
 321                                                           150,
 322                                                           100,
 323                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 324
 325         g_object_class_install_property(gobject_class,
 326                                         PROP_AUTOFIT_LIMIT,
 327                                         g_param_spec_boolean("autofit_limit",
 328                                                              "Limit size of image when autofitting",
 329                                                              NULL,
 330                                                              FALSE,
 331                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 332
 333         g_object_class_install_property(gobject_class,
 334                                         PROP_AUTOFIT_LIMIT_VALUE,
 335                                         g_param_spec_uint("autofit_limit_value",
 336                                                           "Size limit of image when autofitting",
 337                                                           NULL,
 338                                                           10,
 339                                                           150,
 340                                                           100,
 341                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 342
 343         g_object_class_install_property(gobject_class,
 344                                         PROP_ENLARGEMENT_LIMIT_VALUE,
 345                                         g_param_spec_uint("enlargement_limit_value",
 346                                                           "Size increase limit of image when autofitting",
 347                                                           NULL,
 348                                                           100,
 349                                                           999,
 350                                                           500,
 351                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 352
 353
 354         signals[SIGNAL_ZOOM] =
 355                 g_signal_new("zoom",
 356                              G_OBJECT_CLASS_TYPE(gobject_class),
 357                              G_SIGNAL_RUN_LAST,
 358                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 359                              NULL, NULL,
 360                              g_cclosure_marshal_VOID__DOUBLE,
 361                              G_TYPE_NONE, 1,
 362                              G_TYPE_DOUBLE);
 363
 364         signals[SIGNAL_CLICKED] =
 365                 g_signal_new("clicked",
 366                              G_OBJECT_CLASS_TYPE(gobject_class),
 367                              G_SIGNAL_RUN_LAST,
 368                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 369                              NULL, NULL,
 370                              g_cclosure_marshal_VOID__BOXED,
 371                              G_TYPE_NONE, 1,
 372                              GDK_TYPE_EVENT);
 373
 374         signals[SIGNAL_SCROLL_NOTIFY] =
 375                 g_signal_new("scroll-notify",
 376                              G_OBJECT_CLASS_TYPE(gobject_class),
 377                              G_SIGNAL_RUN_LAST,
 378                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 379                              NULL, NULL,
 380                              g_cclosure_marshal_VOID__VOID,
 381                              G_TYPE_NONE, 0);
 382
 383         signals[SIGNAL_RENDER_COMPLETE] =
 384                 g_signal_new("render-complete",
 385                              G_OBJECT_CLASS_TYPE(gobject_class),
 386                              G_SIGNAL_RUN_LAST,
 387                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 388                              NULL, NULL,
 389                              g_cclosure_marshal_VOID__VOID,
 390                              G_TYPE_NONE, 0);
 391
 392         signals[SIGNAL_DRAG] =
 393                 g_signal_new("drag",
 394                              G_OBJECT_CLASS_TYPE(gobject_class),
 395                              G_SIGNAL_RUN_LAST,
 396                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 397                              NULL, NULL,
 398                              g_cclosure_marshal_VOID__BOXED,
 399                              G_TYPE_NONE, 1,
 400                              GDK_TYPE_EVENT);
 401
 402         signals[SIGNAL_UPDATE_PIXEL] =
 403                 g_signal_new("update-pixel",
 404                              G_OBJECT_CLASS_TYPE(gobject_class),
 405                              G_SIGNAL_RUN_LAST,
 406                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 407                              NULL, NULL,
 408                              g_cclosure_marshal_VOID__VOID,
 409                              G_TYPE_NONE, 0);
 410 }
 411
 412 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 413 {
 414         if (options->image.use_clutter_renderer && !options->disable_gpu)
 415                 {
 416 #ifdef HAVE_CLUTTER
 417                 return renderer_clutter_new(pr);
 418 #else
 419                 log_printf("Warning: Geeqie is built without clutter renderer support");
 420 #endif
 421                 }
 422         return renderer_tiles_new(pr);
 423 }
 424
 425
 426 static void pixbuf_renderer_init(PixbufRenderer *pr)
 427 {
 428         GtkWidget *box;
 429
 430         box = GTK_WIDGET(pr);
 431
 432         pr->zoom_min = PR_ZOOM_MIN;
 433         pr->zoom_max = PR_ZOOM_MAX;
 434         pr->zoom_quality = GDK_INTERP_BILINEAR;
 435         pr->zoom_2pass = FALSE;
 436
 437         pr->zoom = 1.0;
 438         pr->scale = 1.0;
 439         pr->aspect_ratio = 1.0;
 440
 441         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 442
 443         pr->scroller_id = 0;
 444         pr->scroller_overlay = -1;
 445
 446         pr->x_mouse = -1;
 447         pr->y_mouse = -1;
 448
 449         pr->source_tiles_enabled = FALSE;
 450         pr->source_tiles = NULL;
 451
 452         pr->orientation = 1;
 453
 454         pr->norm_center_x = 0.5;
 455         pr->norm_center_y = 0.5;
 456
 457         pr->stereo_mode = PR_STEREO_NONE;
 458
 459         pr->color.red =0;
 460         pr->color.green =0;
 461         pr->color.blue =0;
 462
 463         pr->renderer = pr_backend_renderer_new(pr);
 464
 465         pr->renderer2 = NULL;
 466
 467         gtk_widget_set_double_buffered(box, FALSE);
 468         gtk_widget_set_app_paintable(box, TRUE);
 469         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 470                                G_CALLBACK(pr_size_cb), pr);
 471
 472         pr_signals_connect(pr);
 473 }
 474
 475 static void pixbuf_renderer_finalize(GObject *object)
 476 {
 477         PixbufRenderer *pr;
 478
 479         pr = PIXBUF_RENDERER(object);
 480
 481         pr->renderer->free(pr->renderer);
 482         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 483
 484
 485         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 486
 487         pr_scroller_timer_set(pr, FALSE);
 488
 489         pr_source_tile_free_all(pr);
 490 }
 491
 492 PixbufRenderer *pixbuf_renderer_new(void)
 493 {
 494         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 495 }
 496
 497 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 498                                          const GValue *value, GParamSpec *pspec)
 499 {
 500         PixbufRenderer *pr;
 501
 502         pr = PIXBUF_RENDERER(object);
 503
 504         switch (prop_id)
 505                 {
 506                 case PROP_ZOOM_MIN:
 507                         pr->zoom_min = g_value_get_double(value);
 508                         break;
 509                 case PROP_ZOOM_MAX:
 510                         pr->zoom_max = g_value_get_double(value);
 511                         break;
 512                 case PROP_ZOOM_QUALITY:
 513                         pr->zoom_quality = g_value_get_uint(value);
 514                         break;
 515                 case PROP_ZOOM_2PASS:
 516                         pr->zoom_2pass = g_value_get_boolean(value);
 517                         break;
 518                 case PROP_ZOOM_EXPAND:
 519                         pr->zoom_expand = g_value_get_boolean(value);
 520                         break;
 521                 case PROP_SCROLL_RESET:
 522                         pr->scroll_reset = g_value_get_uint(value);
 523                         break;
 524                 case PROP_DELAY_FLIP:
 525                         pr->delay_flip = g_value_get_boolean(value);
 526                         break;
 527                 case PROP_LOADING:
 528                         pr->loading = g_value_get_boolean(value);
 529                         break;
 530                 case PROP_COMPLETE:
 531                         pr->complete = g_value_get_boolean(value);
 532                         break;
 533                 case PROP_CACHE_SIZE_DISPLAY:
 534 //                      pr->tile_cache_max = g_value_get_uint(value);
 535                         break;
 536                 case PROP_CACHE_SIZE_TILES:
 537                         pr->source_tiles_cache_size = g_value_get_uint(value);
 538                         break;
 539                 case PROP_WINDOW_FIT:
 540                         pr->window_fit = g_value_get_boolean(value);
 541                         break;
 542                 case PROP_WINDOW_LIMIT:
 543                         pr->window_limit = g_value_get_boolean(value);
 544                         break;
 545                 case PROP_WINDOW_LIMIT_VALUE:
 546                         pr->window_limit_size = g_value_get_uint(value);
 547                         break;
 548                 case PROP_AUTOFIT_LIMIT:
 549                         pr->autofit_limit = g_value_get_boolean(value);
 550                         break;
 551                 case PROP_AUTOFIT_LIMIT_VALUE:
 552                         pr->autofit_limit_size = g_value_get_uint(value);
 553                         break;
 554                 case PROP_ENLARGEMENT_LIMIT_VALUE:
 555                         pr->enlargement_limit_size = g_value_get_uint(value);
 556                         break;
 557                 default:
 558                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 559                         break;
 560                 }
 561 }
 562
 563 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 564                                          GValue *value, GParamSpec *pspec)
 565 {
 566         PixbufRenderer *pr;
 567
 568         pr = PIXBUF_RENDERER(object);
 569
 570         switch (prop_id)
 571                 {
 572                 case PROP_ZOOM_MIN:
 573                         g_value_set_double(value, pr->zoom_min);
 574                         break;
 575                 case PROP_ZOOM_MAX:
 576                         g_value_set_double(value, pr->zoom_max);
 577                         break;
 578                 case PROP_ZOOM_QUALITY:
 579                         g_value_set_uint(value, pr->zoom_quality);
 580                         break;
 581                 case PROP_ZOOM_2PASS:
 582                         g_value_set_boolean(value, pr->zoom_2pass);
 583                         break;
 584                 case PROP_ZOOM_EXPAND:
 585                         g_value_set_boolean(value, pr->zoom_expand);
 586                         break;
 587                 case PROP_SCROLL_RESET:
 588                         g_value_set_uint(value, pr->scroll_reset);
 589                         break;
 590                 case PROP_DELAY_FLIP:
 591                         g_value_set_boolean(value, pr->delay_flip);
 592                         break;
 593                 case PROP_LOADING:
 594                         g_value_set_boolean(value, pr->loading);
 595                         break;
 596                 case PROP_COMPLETE:
 597                         g_value_set_boolean(value, pr->complete);
 598                         break;
 599                 case PROP_CACHE_SIZE_DISPLAY:
 600 //                      g_value_set_uint(value, pr->tile_cache_max);
 601                         break;
 602                 case PROP_CACHE_SIZE_TILES:
 603                         g_value_set_uint(value, pr->source_tiles_cache_size);
 604                         break;
 605                 case PROP_WINDOW_FIT:
 606                         g_value_set_boolean(value, pr->window_fit);
 607                         break;
 608                 case PROP_WINDOW_LIMIT:
 609                         g_value_set_boolean(value, pr->window_limit);
 610                         break;
 611                 case PROP_WINDOW_LIMIT_VALUE:
 612                         g_value_set_uint(value, pr->window_limit_size);
 613                         break;
 614                 case PROP_AUTOFIT_LIMIT:
 615                         g_value_set_boolean(value, pr->autofit_limit);
 616                         break;
 617                 case PROP_AUTOFIT_LIMIT_VALUE:
 618                         g_value_set_uint(value, pr->autofit_limit_size);
 619                         break;
 620                 case PROP_ENLARGEMENT_LIMIT_VALUE:
 621                         g_value_set_uint(value, pr->enlargement_limit_size);
 622                         break;
 623                 default:
 624                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 625                         break;
 626                 }
 627 }
 628
 629
 630 /*
 631  *-------------------------------------------------------------------
 632  * misc utilities
 633  *-------------------------------------------------------------------
 634  */
 635
 636 static void widget_set_cursor(GtkWidget *widget, gint icon)
 637 {
 638         GdkCursor *cursor;
 639
 640         if (!gtk_widget_get_window(widget)) return;
 641
 642         if (icon == -1)
 643                 {
 644                 cursor = NULL;
 645                 }
 646         else
 647                 {
 648                 cursor = gdk_cursor_new(icon);
 649                 }
 650
 651         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 652
 653         if (cursor) gdk_cursor_unref(cursor);
 654 }
 655
 656 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 657                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 658                                gint *rx, gint *ry, gint *rw, gint *rh)
 659 {
 660         if (clip_x + clip_w <= x ||
 661             clip_x >= x + w ||
 662             clip_y + clip_h <= y ||
 663             clip_y >= y + h)
 664                 {
 665                 return FALSE;
 666                 }
 667
 668         *rx = MAX(x, clip_x);
 669         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 670
 671         *ry = MAX(y, clip_y);
 672         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 673
 674         return TRUE;
 675 }
 676
 677 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 678 {
 679         GdkWindowState state;
 680
 681         if (!pr->parent_window) return FALSE;
 682         if (!pr->window_fit) return FALSE;
 683         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 684
 685         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 686         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 687         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 688
 689         return TRUE;
 690 }
 691
 692 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 693 {
 694         GtkWidget *widget;
 695         GtkWidget *parent;
 696         gint ww, wh;
 697         GtkAllocation widget_allocation;
 698         GtkAllocation parent_allocation;
 699
 700         if (!pr_parent_window_sizable(pr)) return FALSE;
 701
 702         if (pr->window_limit)
 703                 {
 704                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 705                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 706
 707                 if (w > sw) w = sw;
 708                 if (h > sh) h = sh;
 709                 }
 710
 711         widget = GTK_WIDGET(pr);
 712         parent = GTK_WIDGET(pr->parent_window);
 713
 714         gtk_widget_get_allocation(widget, &widget_allocation);
 715         gtk_widget_get_allocation(parent, &parent_allocation);
 716
 717         w += (parent_allocation.width - widget_allocation.width);
 718         h += (parent_allocation.height - widget_allocation.height);
 719
 720         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 721         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 722         if (w == ww && h == wh) return FALSE;
 723
 724         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 725
 726         return TRUE;
 727 }
 728
 729 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 730 {
 731         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 732         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 733
 734         pr->parent_window = GTK_WIDGET(window);
 735 }
 736
 737 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 738 {
 739         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 740
 741         return GTK_WINDOW(pr->parent_window);
 742 }
 743
 744
 745 /*
 746  *-------------------------------------------------------------------
 747  * overlays
 748  *-------------------------------------------------------------------
 749  */
 750
 751
 752 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 753                                  OverlayRendererFlags flags)
 754 {
 755         /* let's assume both renderers returns the same value */
 756         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 757         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 758 }
 759
 760 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 761 {
 762         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 763         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 764 }
 765
 766 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 767 {
 768         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 769         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 770 }
 771
 772 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 773 {
 774         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 775         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 776 }
 777
 778 /*
 779  *-------------------------------------------------------------------
 780  * scroller overlay
 781  *-------------------------------------------------------------------
 782  */
 783
 784
 785 static gboolean pr_scroller_update_cb(gpointer data)
 786 {
 787         PixbufRenderer *pr = data;
 788         gint x, y;
 789         gint xinc, yinc;
 790
 791         /* this was a simple scroll by difference between scroller and mouse position,
 792          * but all this math results in a smoother result and accounts for a dead zone.
 793          */
 794
 795         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 796                 {
 797                 x = 0;
 798                 }
 799         else
 800                 {
 801                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 802                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 803                 x += (x > 0) ? -shift : shift;
 804                 }
 805
 806         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 807                 {
 808                 y = 0;
 809                 }
 810         else
 811                 {
 812                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 813                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 814                 y += (y > 0) ? -shift : shift;
 815                 }
 816
 817         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 818                 {
 819                 xinc = x;
 820                 }
 821         else
 822                 {
 823                 xinc = pr->scroller_xinc;
 824
 825                 if (x >= 0)
 826                         {
 827                         if (xinc < 0) xinc = 0;
 828                         if (x < xinc) xinc = x;
 829                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 830                         }
 831                 else
 832                         {
 833                         if (xinc > 0) xinc = 0;
 834                         if (x > xinc) xinc = x;
 835                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 836                         }
 837                 }
 838
 839         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 840                 {
 841                 yinc = y;
 842                 }
 843         else
 844                 {
 845                 yinc = pr->scroller_yinc;
 846
 847                 if (y >= 0)
 848                         {
 849                         if (yinc < 0) yinc = 0;
 850                         if (y < yinc) yinc = y;
 851                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 852                         }
 853                 else
 854                         {
 855                         if (yinc > 0) yinc = 0;
 856                         if (y > yinc) yinc = y;
 857                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 858                         }
 859                 }
 860
 861         pr->scroller_xinc = xinc;
 862         pr->scroller_yinc = yinc;
 863
 864         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 865         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 866
 867         pixbuf_renderer_scroll(pr, xinc, yinc);
 868
 869         return TRUE;
 870 }
 871
 872 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 873 {
 874         if (pr->scroller_id)
 875                 {
 876                 g_source_remove(pr->scroller_id);
 877                 pr->scroller_id = 0;
 878                 }
 879
 880         if (start)
 881                 {
 882                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 883                                                 pr_scroller_update_cb, pr);
 884                 }
 885 }
 886
 887 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 888 {
 889         if (pr->scroller_overlay == -1)
 890                 {
 891                 GdkPixbuf *pixbuf;
 892                 gint w, h;
 893
 894 #ifdef GQ_BUILD
 895                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 896 #else
 897                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 898                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 899 #endif
 900                 w = gdk_pixbuf_get_width(pixbuf);
 901                 h = gdk_pixbuf_get_height(pixbuf);
 902
 903                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 904                 g_object_unref(pixbuf);
 905                 }
 906
 907         pr->scroller_x = x;
 908         pr->scroller_y = y;
 909         pr->scroller_xpos = x;
 910         pr->scroller_ypos = y;
 911
 912         pr_scroller_timer_set(pr, TRUE);
 913 }
 914
 915 static void pr_scroller_stop(PixbufRenderer *pr)
 916 {
 917         if (!pr->scroller_id) return;
 918
 919         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 920         pr->scroller_overlay = -1;
 921
 922         pr_scroller_timer_set(pr, FALSE);
 923 }
 924
 925 /*
 926  *-------------------------------------------------------------------
 927  * borders
 928  *-------------------------------------------------------------------
 929  */
 930
 931 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 932 {
 933         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 934
 935         if (color)
 936                 {
 937                 pr->color.red = color->red;
 938                 pr->color.green = color->green;
 939                 pr->color.blue = color->blue;
 940                 }
 941         else
 942                 {
 943                 pr->color.red = 0;
 944                 pr->color.green = 0;
 945                 pr->color.blue = 0;
 946                 }
 947
 948         pr->renderer->update_viewport(pr->renderer);
 949         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 950 }
 951
 952 /*
 953  *-------------------------------------------------------------------
 954  * source tiles
 955  *-------------------------------------------------------------------
 956  */
 957
 958 static void pr_source_tile_free(SourceTile *st)
 959 {
 960         if (!st) return;
 961
 962         if (st->pixbuf) g_object_unref(st->pixbuf);
 963         g_free(st);
 964 }
 965
 966 static void pr_source_tile_free_all(PixbufRenderer *pr)
 967 {
 968         GList *work;
 969
 970         work = pr->source_tiles;
 971         while (work)
 972                 {
 973                 SourceTile *st;
 974
 975                 st = work->data;
 976                 work = work->next;
 977
 978                 pr_source_tile_free(st);
 979                 }
 980
 981         g_list_free(pr->source_tiles);
 982         pr->source_tiles = NULL;
 983 }
 984
 985 static void pr_source_tile_unset(PixbufRenderer *pr)
 986 {
 987         pr_source_tile_free_all(pr);
 988         pr->source_tiles_enabled = FALSE;
 989 }
 990
 991 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 992 {
 993         gint x1, y1, x2, y2;
 994
 995         if (!st) return FALSE;
 996
 997 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 998 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 999 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
1000 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
1001         x1 = pr->x_scroll;
1002         y1 = pr->y_scroll;
1003         x2 = pr->x_scroll + pr->vis_width;
1004         y2 = pr->y_scroll + pr->vis_height;
1005
1006         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
1007                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
1008                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
1009                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
1010 }
1011
1012 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
1013 {
1014         SourceTile *st = NULL;
1015         gint count;
1016
1017         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
1018
1019         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
1020
1021         count = g_list_length(pr->source_tiles);
1022         if (count >= pr->source_tiles_cache_size)
1023                 {
1024                 GList *work;
1025
1026                 work = g_list_last(pr->source_tiles);
1027                 while (work && count >= pr->source_tiles_cache_size)
1028                         {
1029                         SourceTile *needle;
1030
1031                         needle = work->data;
1032                         work = work->prev;
1033
1034                         if (!pr_source_tile_visible(pr, needle))
1035                                 {
1036                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1037
1038                                 if (pr->func_tile_dispose)
1039                                         {
1040                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1041                                                               pr->source_tile_width, pr->source_tile_height,
1042                                                               needle->pixbuf, pr->func_tile_data);
1043                                         }
1044
1045                                 if (!st)
1046                                         {
1047                                         st = needle;
1048                                         }
1049                                 else
1050                                         {
1051                                         pr_source_tile_free(needle);
1052                                         }
1053
1054                                 count--;
1055                                 }
1056                         }
1057                 }
1058
1059         if (!st)
1060                 {
1061                 st = g_new0(SourceTile, 1);
1062                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1063                                             pr->source_tile_width, pr->source_tile_height);
1064                 }
1065
1066         st->x = ROUND_DOWN(x, pr->source_tile_width);
1067         st->y = ROUND_DOWN(y, pr->source_tile_height);
1068         st->blank = TRUE;
1069
1070         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1071
1072         return st;
1073 }
1074
1075 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1076 {
1077         SourceTile *st;
1078
1079         st = pr_source_tile_new(pr, x, y);
1080         if (!st) return NULL;
1081
1082         if (pr->func_tile_request &&
1083             pr->func_tile_request(pr, st->x, st->y,
1084                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1085                 {
1086                 st->blank = FALSE;
1087                 }
1088
1089         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1090                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1091         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1092                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1093         return st;
1094 }
1095
1096 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1097 {
1098         GList *work;
1099
1100         work = pr->source_tiles;
1101         while (work)
1102                 {
1103                 SourceTile *st = work->data;
1104
1105                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1106                     y >= st->y && y < st->y + pr->source_tile_height)
1107                         {
1108                         if (work != pr->source_tiles)
1109                                 {
1110                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1111                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1112                                 }
1113                         return st;
1114                         }
1115
1116                 work = work->next;
1117                 }
1118
1119         return NULL;
1120 }
1121
1122 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1123 {
1124         gint x1, y1;
1125         GList *list = NULL;
1126         gint sx, sy;
1127
1128         if (x < 0) x = 0;
1129         if (y < 0) y = 0;
1130         if (w > pr->image_width) w = pr->image_width;
1131         if (h > pr->image_height) h = pr->image_height;
1132
1133         sx = ROUND_DOWN(x, pr->source_tile_width);
1134         sy = ROUND_DOWN(y, pr->source_tile_height);
1135
1136         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1137                 {
1138                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1139                         {
1140                         SourceTile *st;
1141
1142                         st = pr_source_tile_find(pr, x1, y1);
1143                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1144
1145                         if (st) list = g_list_prepend(list, st);
1146                         }
1147                 }
1148
1149         return g_list_reverse(list);
1150 }
1151
1152 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1153 {
1154         GList *work;
1155
1156         if (width < 1 || height < 1) return;
1157
1158         work = pr->source_tiles;
1159         while (work)
1160                 {
1161                 SourceTile *st;
1162                 gint rx, ry, rw, rh;
1163
1164                 st = work->data;
1165                 work = work->next;
1166
1167                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1168                                    x, y, width, height,
1169                                    &rx, &ry, &rw, &rh))
1170                         {
1171                         GdkPixbuf *pixbuf;
1172
1173                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1174                         if (pr->func_tile_request &&
1175                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1176                                 {
1177                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1178                                                               rw * pr->scale, rh * pr->scale);
1179                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1180                                                                 rw * pr->scale, rh * pr->scale);
1181                                 }
1182                         g_object_unref(pixbuf);
1183                         }
1184                 }
1185 }
1186
1187 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1188                                gint tile_width, gint tile_height, gint cache_size,
1189                                PixbufRendererTileRequestFunc func_request,
1190                                PixbufRendererTileDisposeFunc func_dispose,
1191                                gpointer user_data,
1192                                gdouble zoom)
1193 {
1194         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1195         g_return_if_fail(tile_width >= 32 && tile_height >= 32);
1196         g_return_if_fail(width >= 32 && height > 32);
1197         g_return_if_fail(func_request != NULL);
1198
1199         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1200         pr->pixbuf = NULL;
1201
1202         pr_source_tile_unset(pr);
1203
1204         if (cache_size < 4) cache_size = 4;
1205
1206         pr->source_tiles_enabled = TRUE;
1207         pr->source_tiles_cache_size = cache_size;
1208         pr->source_tile_width = tile_width;
1209         pr->source_tile_height = tile_height;
1210
1211         pr->image_width = width;
1212         pr->image_height = height;
1213
1214         pr->func_tile_request = func_request;
1215         pr->func_tile_dispose = func_dispose;
1216         pr->func_tile_data = user_data;
1217
1218         pr_stereo_temp_disable(pr, TRUE);
1219         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1220 }
1221
1222 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1223 {
1224         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1225         g_return_if_fail(width >= 32 && height > 32);
1226
1227         if (!pr->source_tiles_enabled) return;
1228         if (pr->image_width == width && pr->image_height == height) return;
1229
1230         pr->image_width = width;
1231         pr->image_height = height;
1232
1233         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1234 }
1235
1236 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1237 {
1238         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1239
1240         return pr->source_tiles_enabled;
1241 }
1242
1243 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1244                                 PrZoomFlags flags, gint x, gint y)
1245 {
1246         gdouble zoom = pr->zoom;
1247
1248         if (increment == 0.0) return;
1249
1250         if (zoom == 0.0)
1251                 {
1252                 if (pr->scale < 1.0)
1253                         {
1254                         zoom = 0.0 - 1.0 / pr->scale;
1255                         }
1256                 else
1257                         {
1258                         zoom = pr->scale;
1259                         }
1260                 }
1261
1262         if (options->image.zoom_style == ZOOM_GEOMETRIC)
1263                 {
1264                 if (increment < 0.0)
1265                         {
1266                         if (zoom >= 1.0)
1267                                 {
1268                                 if (zoom / -(increment - 1.0) < 1.0)
1269                                         {
1270                                         zoom = 1.0 / (zoom / (increment - 1.0));
1271                                         }
1272                                 else
1273                                         {
1274                                         zoom = zoom / -(increment - 1.0) ;
1275                                         }
1276                                 }
1277                         else
1278                                 {
1279                                 zoom = zoom * -(increment - 1.0);
1280                                 }
1281                         }
1282                 else
1283                         {
1284                         if (zoom <= -1.0 )
1285                                 {
1286                                 if (zoom / (increment + 1.0) > -1.0)
1287                                         {
1288                                         zoom = -(1.0 / (zoom / (increment + 1.0)));
1289                                         }
1290                                 else
1291                                         {
1292                                         zoom = zoom / (increment + 1.0) ;
1293                                         }
1294                                 }
1295                         else
1296                                 {
1297                                 zoom = zoom * (increment + 1.0);
1298                                 }
1299                         }
1300                 }
1301         else
1302                 {
1303                 if (increment < 0.0)
1304                         {
1305                         if (zoom >= 1.0 && zoom + increment < 1.0)
1306                                 {
1307                                 zoom = zoom + increment - 2.0;
1308                                 }
1309                         else
1310                                 {
1311                                 zoom = zoom + increment;
1312                                 }
1313                         }
1314                 else
1315                         {
1316                         if (zoom <= -1.0 && zoom + increment > -1.0)
1317                                 {
1318                                 zoom = zoom + increment + 2.0;
1319                                 }
1320                         else
1321                                 {
1322                                 zoom = zoom + increment;
1323                                 }
1324                         }
1325                 }
1326
1327         pr_zoom_sync(pr, zoom, flags, x, y);
1328 }
1329
1330
1331 /*
1332  *-------------------------------------------------------------------
1333  * signal emission
1334  *-------------------------------------------------------------------
1335  */
1336
1337 static void pr_update_signal(PixbufRenderer *pr)
1338 {
1339         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1340         pr->debug_updated = TRUE;
1341 }
1342
1343 static void pr_zoom_signal(PixbufRenderer *pr)
1344 {
1345         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1346 }
1347
1348 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1349 {
1350         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1351 }
1352
1353 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1354 {
1355         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1356 }
1357
1358 void pr_render_complete_signal(PixbufRenderer *pr)
1359 {
1360         if (!pr->complete)
1361                 {
1362                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1363                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1364                 }
1365         if (pr->debug_updated)
1366                 {
1367                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1368                 pr->debug_updated = FALSE;
1369                 }
1370 }
1371
1372 static void pr_drag_signal(PixbufRenderer *pr, GdkEventMotion *event)
1373 {
1374         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, event);
1375 }
1376
1377 static void pr_update_pixel_signal(PixbufRenderer *pr)
1378 {
1379         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1380 }
1381
1382 /*
1383  *-------------------------------------------------------------------
1384  * sync and clamp
1385  *-------------------------------------------------------------------
1386  */
1387
1388
1389 void pr_tile_coords_map_orientation(gint orientation,
1390                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1391                                      gdouble image_w, gdouble image_h,
1392                                      gdouble tile_w, gdouble tile_h,
1393                                      gdouble *res_x, gdouble *res_y)
1394 {
1395         *res_x = tile_x;
1396         *res_y = tile_y;
1397         switch (orientation)
1398                 {
1399                 case EXIF_ORIENTATION_TOP_LEFT:
1400                         /* normal -- nothing to do */
1401                         break;
1402                 case EXIF_ORIENTATION_TOP_RIGHT:
1403                         /* mirrored */
1404                         *res_x = image_w - tile_x - tile_w;
1405                         break;
1406                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1407                         /* upside down */
1408                         *res_x = image_w - tile_x - tile_w;
1409                         *res_y = image_h - tile_y - tile_h;
1410                         break;
1411                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1412                         /* flipped */
1413                         *res_y = image_h - tile_y - tile_h;
1414                         break;
1415                 case EXIF_ORIENTATION_LEFT_TOP:
1416                         *res_x = tile_y;
1417                         *res_y = tile_x;
1418                         break;
1419                 case EXIF_ORIENTATION_RIGHT_TOP:
1420                         /* rotated -90 (270) */
1421                         *res_x = tile_y;
1422                         *res_y = image_w - tile_x - tile_w;
1423                         break;
1424                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1425                         *res_x = image_h - tile_y - tile_h;
1426                         *res_y = image_w - tile_x - tile_w;
1427                         break;
1428                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1429                         /* rotated 90 */
1430                         *res_x = image_h - tile_y - tile_h;
1431                         *res_y = tile_x;
1432                         break;
1433                 default:
1434                         /* The other values are out of range */
1435                         break;
1436                 }
1437 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1438 }
1439
1440 void pr_tile_region_map_orientation(gint orientation,
1441                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1442                                      gint tile_w, gint tile_h,
1443                                      gint area_w, gint area_h,
1444                                      gint *res_x, gint *res_y,
1445                                      gint *res_w, gint *res_h)
1446 {
1447         *res_x = area_x;
1448         *res_y = area_y;
1449         *res_w = area_w;
1450         *res_h = area_h;
1451
1452         switch (orientation)
1453                 {
1454                 case EXIF_ORIENTATION_TOP_LEFT:
1455                         /* normal -- nothing to do */
1456                         break;
1457                 case EXIF_ORIENTATION_TOP_RIGHT:
1458                         /* mirrored */
1459                         *res_x = tile_w - area_x - area_w;
1460                         break;
1461                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1462                         /* upside down */
1463                         *res_x = tile_w - area_x - area_w;
1464                         *res_y = tile_h - area_y - area_h;
1465                         break;
1466                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1467                         /* flipped */
1468                         *res_y = tile_h - area_y - area_h;
1469                         break;
1470                 case EXIF_ORIENTATION_LEFT_TOP:
1471                         *res_x = area_y;
1472                         *res_y = area_x;
1473                         *res_w = area_h;
1474                         *res_h = area_w;
1475                         break;
1476                 case EXIF_ORIENTATION_RIGHT_TOP:
1477                         /* rotated -90 (270) */
1478                         *res_x = area_y;
1479                         *res_y = tile_w - area_x - area_w;
1480                         *res_w = area_h;
1481                         *res_h = area_w;
1482                         break;
1483                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1484                         *res_x = tile_h - area_y - area_h;
1485                         *res_y = tile_w - area_x - area_w;
1486                         *res_w = area_h;
1487                         *res_h = area_w;
1488                         break;
1489                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1490                         /* rotated 90 */
1491                         *res_x = tile_h - area_y - area_h;
1492                         *res_y = area_x;
1493                         *res_w = area_h;
1494                         *res_h = area_w;
1495                         break;
1496                 default:
1497                         /* The other values are out of range */
1498                         break;
1499                 }
1500 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1501 }
1502
1503 void pr_coords_map_orientation_reverse(gint orientation,
1504                                      gint area_x, gint area_y,
1505                                      gint tile_w, gint tile_h,
1506                                      gint area_w, gint area_h,
1507                                      gint *res_x, gint *res_y,
1508                                      gint *res_w, gint *res_h)
1509 {
1510         *res_x = area_x;
1511         *res_y = area_y;
1512         *res_w = area_w;
1513         *res_h = area_h;
1514
1515         switch (orientation)
1516                 {
1517                 case EXIF_ORIENTATION_TOP_LEFT:
1518                         /* normal -- nothing to do */
1519                         break;
1520                 case EXIF_ORIENTATION_TOP_RIGHT:
1521                         /* mirrored */
1522                         *res_x = tile_w - area_x - area_w;
1523                         break;
1524                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1525                         /* upside down */
1526                         *res_x = tile_w - area_x - area_w;
1527                         *res_y = tile_h - area_y - area_h;
1528                         break;
1529                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1530                         /* flipped */
1531                         *res_y = tile_h - area_y - area_h;
1532                         break;
1533                 case EXIF_ORIENTATION_LEFT_TOP:
1534                         *res_x = area_y;
1535                         *res_y = area_x;
1536                         *res_w = area_h;
1537                         *res_h = area_w;
1538                         break;
1539                 case EXIF_ORIENTATION_RIGHT_TOP:
1540                         /* rotated -90 (270) */
1541                         *res_x = tile_w - area_y - area_h;
1542                         *res_y = area_x;
1543                         *res_w = area_h;
1544                         *res_h = area_w;
1545                         break;
1546                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1547                         *res_x = tile_w - area_y - area_h;
1548                         *res_y = tile_h - area_x - area_w;
1549                         *res_w = area_h;
1550                         *res_h = area_w;
1551                         break;
1552                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1553                         /* rotated 90 */
1554                         *res_x = area_y;
1555                         *res_y = tile_h - area_x - area_w;
1556                         *res_w = area_h;
1557                         *res_h = area_w;
1558                         break;
1559                 default:
1560                         /* The other values are out of range */
1561                         break;
1562                 }
1563 }
1564
1565
1566
1567 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1568 {
1569         gint src_x, src_y;
1570         if (!pr->width || !pr->height) return;
1571
1572         /*
1573          * Update norm_center only if the image is bigger than the window.
1574          * With this condition the stored center survives also a temporary display
1575          * of the "broken image" icon.
1576         */
1577
1578         if (pr->width > pr->viewport_width)
1579                 {
1580                 src_x = pr->x_scroll + pr->vis_width / 2;
1581                 pr->norm_center_x = (gdouble)src_x / pr->width;
1582                 }
1583
1584         if (pr->height > pr->viewport_height)
1585                 {
1586                 src_y = pr->y_scroll + pr->vis_height / 2;
1587                 pr->norm_center_y = (gdouble)src_y / pr->height;
1588                 }
1589 }
1590
1591
1592 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1593 {
1594         gint old_xs;
1595         gint old_ys;
1596
1597         if (pr->zoom == 0.0)
1598                 {
1599                 pr->x_scroll = 0;
1600                 pr->y_scroll = 0;
1601
1602                 return FALSE;
1603                 }
1604
1605         old_xs = pr->x_scroll;
1606         old_ys = pr->y_scroll;
1607
1608         if (pr->x_offset > 0)
1609                 {
1610                 pr->x_scroll = 0;
1611                 }
1612         else
1613                 {
1614                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1615                 }
1616
1617         if (pr->y_offset > 0)
1618                 {
1619                 pr->y_scroll = 0;
1620                 }
1621         else
1622                 {
1623                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1624                 }
1625
1626         pixbuf_renderer_sync_scroll_center(pr);
1627
1628         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1629 }
1630
1631 static gboolean pr_size_clamp(PixbufRenderer *pr)
1632 {
1633         gint old_vw, old_vh;
1634
1635         old_vw = pr->vis_width;
1636         old_vh = pr->vis_height;
1637
1638         if (pr->width < pr->viewport_width)
1639                 {
1640                 pr->vis_width = pr->width;
1641                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1642                 }
1643         else
1644                 {
1645                 pr->vis_width = pr->viewport_width;
1646                 pr->x_offset = 0;
1647                 }
1648
1649         if (pr->height < pr->viewport_height)
1650                 {
1651                 pr->vis_height = pr->height;
1652                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1653                 }
1654         else
1655                 {
1656                 pr->vis_height = pr->viewport_height;
1657                 pr->y_offset = 0;
1658                 }
1659
1660         pixbuf_renderer_sync_scroll_center(pr);
1661
1662         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1663 }
1664
1665 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1666                               PrZoomFlags flags)
1667 {
1668         gint w, h;
1669         gdouble scale;
1670         gboolean force = !!(flags & PR_ZOOM_FORCE);
1671         gboolean new = !!(flags & PR_ZOOM_NEW);
1672
1673         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1674
1675         if (pr->zoom == zoom && !force) return FALSE;
1676
1677         w = pr->image_width;
1678         h = pr->image_height;
1679
1680         if (zoom == 0.0 && !pr->pixbuf)
1681                 {
1682                 scale = 1.0;
1683                 }
1684         else if (zoom == 0.0)
1685                 {
1686                 gint max_w;
1687                 gint max_h;
1688                 gboolean sizeable;
1689
1690                 sizeable = (new && pr_parent_window_sizable(pr));
1691
1692                 if (sizeable)
1693                         {
1694                         max_w = gdk_screen_width();
1695                         max_h = gdk_screen_height();
1696
1697                         if (pr->window_limit)
1698                                 {
1699                                 max_w = max_w * pr->window_limit_size / 100;
1700                                 max_h = max_h * pr->window_limit_size / 100;
1701                                 }
1702                         }
1703                 else
1704                         {
1705                         max_w = pr->viewport_width;
1706                         max_h = pr->viewport_height;
1707                         }
1708
1709                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1710                         {
1711                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1712                                 {
1713                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1714                                 h = max_h;
1715                                 w = w * scale + 0.5;
1716                                 if (w > max_w) w = max_w;
1717                                 }
1718                         else
1719                                 {
1720                                 scale = (gdouble)max_w / w;
1721                                 w = max_w;
1722                                 h = h * scale * pr->aspect_ratio + 0.5;
1723                                 if (h > max_h) h = max_h;
1724                                 }
1725
1726                         if (pr->autofit_limit)
1727                                 {
1728                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1729                                 w = w * factor + 0.5;
1730                                 h = h * factor + 0.5;
1731                                 scale = scale * factor;
1732                                 }
1733
1734                         if (pr->zoom_expand)
1735                                 {
1736                                 gdouble factor = (gdouble)pr->enlargement_limit_size / 100;
1737                                 if (scale > factor)
1738                                         {
1739                                         w = w * factor / scale;
1740                                         h = h * factor / scale;
1741                                         scale = factor;
1742                                         }
1743                                 }
1744
1745                         if (w < 1) w = 1;
1746                         if (h < 1) h = 1;
1747                         }
1748                 else
1749                         {
1750                         scale = 1.0;
1751                         }
1752                 }
1753         else if (zoom > 0.0) /* zoom orig, in */
1754                 {
1755                 scale = zoom;
1756                 w = w * scale;
1757                 h = h * scale * pr->aspect_ratio;
1758                 }
1759         else /* zoom out */
1760                 {
1761                 scale = 1.0 / (0.0 - zoom);
1762                 w = w * scale;
1763                 h = h * scale * pr->aspect_ratio;
1764                 }
1765
1766         pr->zoom = zoom;
1767         pr->width = w;
1768         pr->height = h;
1769         pr->scale = scale;
1770
1771         return TRUE;
1772 }
1773
1774 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1775                          PrZoomFlags flags, gint px, gint py)
1776 {
1777         gdouble old_scale;
1778         gint old_cx, old_cy;
1779         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1780         gboolean force = !!(flags & PR_ZOOM_FORCE);
1781         gboolean new = !!(flags & PR_ZOOM_NEW);
1782         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1783         PrZoomFlags clamp_flags = flags;
1784         gdouble old_center_x = pr->norm_center_x;
1785         gdouble old_center_y = pr->norm_center_y;
1786
1787         old_scale = pr->scale;
1788         if (center_point)
1789                 {
1790                 px = CLAMP(px, 0, pr->width);
1791                 py = CLAMP(py, 0, pr->height);
1792                 old_cx = pr->x_scroll + (px - pr->x_offset);
1793                 old_cy = pr->y_scroll + (py - pr->y_offset);
1794                 }
1795         else
1796                 {
1797                 px = py = 0;
1798                 old_cx = pr->x_scroll + pr->vis_width / 2;
1799                 old_cy = pr->y_scroll + pr->vis_height / 2;
1800                 }
1801
1802         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1803         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1804
1805         (void) pr_size_clamp(pr);
1806         (void) pr_parent_window_resize(pr, pr->width, pr->height);
1807
1808         if (force && new)
1809                 {
1810                 switch (pr->scroll_reset)
1811                         {
1812                         case PR_SCROLL_RESET_NOCHANGE:
1813                                 /* maintain old scroll position */
1814                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1815                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1816                                 break;
1817                         case PR_SCROLL_RESET_CENTER:
1818                                 /* center new image */
1819                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1820                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1821                                 break;
1822                         case PR_SCROLL_RESET_TOPLEFT:
1823                         default:
1824                                 /* reset to upper left */
1825                                 pr->x_scroll = 0;
1826                                 pr->y_scroll = 0;
1827                                 break;
1828                         }
1829                 }
1830         else
1831                 {
1832                 /* user zoom does not force, so keep visible center point */
1833                 if (center_point)
1834                         {
1835                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1836                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1837                         }
1838                 else
1839                         {
1840                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1841                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1842                         }
1843                 }
1844
1845         pr_scroll_clamp(pr);
1846
1847         pr->renderer->update_zoom(pr->renderer, lazy);
1848         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1849
1850         pr_scroll_notify_signal(pr);
1851         pr_zoom_signal(pr);
1852         pr_update_signal(pr);
1853 }
1854
1855 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1856 {
1857         gboolean zoom_changed = FALSE;
1858
1859         gint new_viewport_width = new_width;
1860         gint new_viewport_height = new_height;
1861
1862         if (!pr->stereo_temp_disable)
1863                 {
1864                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1865                         {
1866                         new_viewport_width = new_width / 2;
1867                         }
1868                 else if (pr->stereo_mode & PR_STEREO_VERT)
1869                         {
1870                         new_viewport_height = new_height / 2;
1871                         }
1872                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1873                         {
1874                         new_viewport_width = pr->stereo_fixed_width;
1875                         new_viewport_height = pr->stereo_fixed_height;
1876                         }
1877                 }
1878
1879         if (pr->window_width == new_width && pr->window_height == new_height &&
1880             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1881
1882         pr->window_width = new_width;
1883         pr->window_height = new_height;
1884         pr->viewport_width = new_viewport_width;
1885         pr->viewport_height = new_viewport_height;
1886
1887         if (pr->zoom == 0.0)
1888                 {
1889                 gdouble old_scale = pr->scale;
1890                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1891                 zoom_changed = (old_scale != pr->scale);
1892                 }
1893
1894         pr_size_clamp(pr);
1895         pr_scroll_clamp(pr);
1896
1897         if (zoom_changed)
1898                 {
1899                 pr->renderer->update_zoom(pr->renderer, FALSE);
1900                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1901                 }
1902
1903         pr->renderer->update_viewport(pr->renderer);
1904         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1905
1906
1907         /* ensure scroller remains visible */
1908         if (pr->scroller_overlay != -1)
1909                 {
1910                 gboolean update = FALSE;
1911
1912                 if (pr->scroller_x > new_width)
1913                         {
1914                         pr->scroller_x = new_width;
1915                         pr->scroller_xpos = new_width;
1916                         update = TRUE;
1917                         }
1918                 if (pr->scroller_y > new_height)
1919                         {
1920                         pr->scroller_y = new_height;
1921                         pr->scroller_ypos = new_height;
1922                         update = TRUE;
1923                         }
1924
1925                 if (update)
1926                         {
1927                         GdkPixbuf *pixbuf;
1928
1929                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1930                                 {
1931                                 gint w, h;
1932
1933                                 w = gdk_pixbuf_get_width(pixbuf);
1934                                 h = gdk_pixbuf_get_height(pixbuf);
1935                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1936                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1937                                 }
1938                         }
1939                 }
1940
1941         pr_scroll_notify_signal(pr);
1942         if (zoom_changed) pr_zoom_signal(pr);
1943         pr_update_signal(pr);
1944 }
1945
1946 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1947 {
1948         PixbufRenderer *pr = data;
1949
1950         pr_size_sync(pr, allocation->width, allocation->height);
1951 }
1952
1953 /*
1954  *-------------------------------------------------------------------
1955  * scrolling
1956  *-------------------------------------------------------------------
1957  */
1958
1959 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1960 {
1961         gint old_x, old_y;
1962         gint x_off, y_off;
1963
1964         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1965
1966         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1967
1968         old_x = pr->x_scroll;
1969         old_y = pr->y_scroll;
1970
1971         pr->x_scroll += x;
1972         pr->y_scroll += y;
1973
1974         pr_scroll_clamp(pr);
1975
1976         pixbuf_renderer_sync_scroll_center(pr);
1977
1978         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1979
1980         pr_scroll_notify_signal(pr);
1981
1982         x_off = pr->x_scroll - old_x;
1983         y_off = pr->y_scroll - old_y;
1984
1985         pr->renderer->scroll(pr->renderer, x_off, y_off);
1986         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1987 }
1988
1989 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1990                                      gdouble x_align, gdouble y_align)
1991 {
1992         gint px, py;
1993         gint ax, ay;
1994
1995         x_align = CLAMP(x_align, 0.0, 1.0);
1996         y_align = CLAMP(y_align, 0.0, 1.0);
1997
1998         ax = (gdouble)pr->vis_width * x_align;
1999         ay = (gdouble)pr->vis_height * y_align;
2000
2001         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
2002         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
2003
2004         pixbuf_renderer_scroll(pr, px, py);
2005 }
2006
2007 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
2008
2009 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
2010 {
2011         *x = pr->norm_center_x;
2012         *y = pr->norm_center_y;
2013 }
2014
2015 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
2016 {
2017         gdouble dst_x, dst_y;
2018
2019         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
2020         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
2021
2022         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
2023         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
2024
2025         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
2026 }
2027
2028 /*
2029  *-------------------------------------------------------------------
2030  * mouse
2031  *-------------------------------------------------------------------
2032  */
2033
2034 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventMotion *event, gpointer data)
2035 {
2036         PixbufRenderer *pr;
2037         gint accel;
2038 #if GTK_CHECK_VERSION(3,0,0)
2039         GdkDeviceManager *device_manager;
2040         GdkDevice *device;
2041 #endif
2042
2043         /* This is a hack, but work far the best, at least for single pointer systems.
2044          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
2045         gint x, y;
2046 #if GTK_CHECK_VERSION(3,0,0)
2047         device_manager = gdk_display_get_device_manager(gdk_window_get_display(event->window));
2048         device = gdk_device_manager_get_client_pointer(device_manager);
2049         gdk_window_get_device_position(event->window, device, &x, &y, NULL);
2050 #else
2051         gdk_window_get_pointer (event->window, &x, &y, NULL);
2052 #endif
2053         event->x = x;
2054         event->y = y;
2055
2056         pr = PIXBUF_RENDERER(widget);
2057
2058         if (pr->scroller_id)
2059                 {
2060                 pr->scroller_xpos = event->x;
2061                 pr->scroller_ypos = event->y;
2062                 }
2063
2064         pr->x_mouse = event->x;
2065         pr->y_mouse = event->y;
2066         pr_update_pixel_signal(pr);
2067
2068         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
2069
2070         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2071                 {
2072                 pr->drag_moved++;
2073                 }
2074         else
2075                 {
2076                 widget_set_cursor(widget, GDK_FLEUR);
2077                 }
2078
2079         if (event->state & GDK_CONTROL_MASK)
2080                 {
2081                 accel = PR_PAN_SHIFT_MULTIPLIER;
2082                 }
2083         else
2084                 {
2085                 accel = 1;
2086                 }
2087
2088         /* do the scroll - not when drawing rectangle*/
2089         if (!options->draw_rectangle)
2090                 {
2091                 pixbuf_renderer_scroll(pr, (pr->drag_last_x - event->x) * accel,
2092                                         (pr->drag_last_y - event->y) * accel);
2093                 }
2094         pr_drag_signal(pr, event);
2095
2096         pr->drag_last_x = event->x;
2097         pr->drag_last_y = event->y;
2098
2099         /* This is recommended by the GTK+ documentation, but does not work properly.
2100          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2101          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2102          */
2103         /* gdk_event_request_motions (event); */
2104         return FALSE;
2105 }
2106
2107 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2108 {
2109         PixbufRenderer *pr;
2110
2111         pr = PIXBUF_RENDERER(widget);
2112         pr->x_mouse = -1;
2113         pr->y_mouse = -1;
2114
2115         pr_update_pixel_signal(pr);
2116         return FALSE;
2117 }
2118
2119 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2120 {
2121         PixbufRenderer *pr;
2122         GtkWidget *parent;
2123
2124         pr = PIXBUF_RENDERER(widget);
2125
2126         if (pr->scroller_id) return TRUE;
2127
2128         switch (bevent->button)
2129                 {
2130                 case MOUSE_BUTTON_LEFT:
2131                         pr->in_drag = TRUE;
2132                         pr->drag_last_x = bevent->x;
2133                         pr->drag_last_y = bevent->y;
2134                         pr->drag_moved = 0;
2135                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2136                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2137                                          NULL, NULL, bevent->time);
2138                         gtk_grab_add(widget);
2139                         break;
2140                 case MOUSE_BUTTON_MIDDLE:
2141                         pr->drag_moved = 0;
2142                         break;
2143                 case MOUSE_BUTTON_RIGHT:
2144                         pr_clicked_signal(pr, bevent);
2145                         break;
2146                 default:
2147                         break;
2148                 }
2149
2150         parent = gtk_widget_get_parent(widget);
2151         if (widget && gtk_widget_get_can_focus(parent))
2152                 {
2153                 gtk_widget_grab_focus(parent);
2154                 }
2155
2156         return FALSE;
2157 }
2158
2159 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2160 {
2161         PixbufRenderer *pr;
2162
2163         pr = PIXBUF_RENDERER(widget);
2164
2165         if (pr->scroller_id)
2166                 {
2167                 pr_scroller_stop(pr);
2168                 return TRUE;
2169                 }
2170
2171         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2172                 {
2173                 gtk_grab_remove(widget);
2174                 gdk_pointer_ungrab(bevent->time);
2175                 widget_set_cursor(widget, -1);
2176                 }
2177
2178         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2179                 {
2180                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2181                         {
2182                         pr_scroller_start(pr, bevent->x, bevent->y);
2183                         }
2184                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2185                         {
2186                         pr_clicked_signal(pr, bevent);
2187                         }
2188                 }
2189
2190         pr->in_drag = FALSE;
2191
2192         return FALSE;
2193 }
2194
2195 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2196 {
2197         PixbufRenderer *pr;
2198
2199         pr = PIXBUF_RENDERER(widget);
2200
2201         if (pr->scroller_id)
2202                 {
2203                 pr->scroller_xpos = pr->scroller_x;
2204                 pr->scroller_ypos = pr->scroller_y;
2205                 pr->scroller_xinc = 0;
2206                 pr->scroller_yinc = 0;
2207                 }
2208
2209         return FALSE;
2210 }
2211
2212 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2213 {
2214         PixbufRenderer *pr;
2215
2216         pr = PIXBUF_RENDERER(widget);
2217
2218         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2219 }
2220
2221 static void pr_signals_connect(PixbufRenderer *pr)
2222 {
2223         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2224                          G_CALLBACK(pr_mouse_motion_cb), pr);
2225         g_signal_connect(G_OBJECT(pr), "button_press_event",
2226                          G_CALLBACK(pr_mouse_press_cb), pr);
2227         g_signal_connect(G_OBJECT(pr), "button_release_event",
2228                          G_CALLBACK(pr_mouse_release_cb), pr);
2229         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2230                          G_CALLBACK(pr_mouse_leave_cb), pr);
2231         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2232                          G_CALLBACK(pr_leave_notify_cb), pr);
2233
2234         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2235                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
2236                                               GDK_LEAVE_NOTIFY_MASK);
2237
2238         g_signal_connect(G_OBJECT(pr), "drag_begin",
2239                          G_CALLBACK(pr_mouse_drag_cb), pr);
2240
2241 }
2242
2243 /*
2244  *-------------------------------------------------------------------
2245  * stereo support
2246  *-------------------------------------------------------------------
2247  */
2248
2249 #define COLOR_BYTES 3   /* rgb */
2250 #define RC 0            /* Red-Cyan */
2251 #define GM 1            /* Green-Magenta */
2252 #define YB 2            /* Yellow-Blue */
2253
2254 static void pr_create_anaglyph_color(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2255 {
2256         gint srs, drs;
2257         guchar *s_pix, *d_pix;
2258         guchar *sp, *dp;
2259         guchar *spi, *dpi;
2260         gint i, j;
2261
2262         srs = gdk_pixbuf_get_rowstride(right);
2263         s_pix = gdk_pixbuf_get_pixels(right);
2264         spi = s_pix + (x * COLOR_BYTES);
2265
2266         drs = gdk_pixbuf_get_rowstride(pixbuf);
2267         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2268         dpi =  d_pix + x * COLOR_BYTES;
2269
2270         for (i = y; i < y + h; i++)
2271                 {
2272                 sp = spi + (i * srs);
2273                 dp = dpi + (i * drs);
2274                 for (j = 0; j < w; j++)
2275                         {
2276                         switch(mode)
2277                                 {
2278                                 case RC:
2279                                         dp[0] = sp[0]; /* copy red channel */
2280                                         break;
2281                                 case GM:
2282                                         dp[1] = sp[1];
2283                                         break;
2284                                 case YB:
2285                                         dp[0] = sp[0];
2286                                         dp[1] = sp[1];
2287                                         break;
2288                                 }
2289                         sp += COLOR_BYTES;
2290                         dp += COLOR_BYTES;
2291                         }
2292                 }
2293 }
2294
2295 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2296 {
2297         gint srs, drs;
2298         guchar *s_pix, *d_pix;
2299         guchar *sp, *dp;
2300         guchar *spi, *dpi;
2301         gint i, j;
2302         const double gc[3] = {0.299, 0.587, 0.114};
2303
2304         srs = gdk_pixbuf_get_rowstride(right);
2305         s_pix = gdk_pixbuf_get_pixels(right);
2306         spi = s_pix + (x * COLOR_BYTES);
2307
2308         drs = gdk_pixbuf_get_rowstride(pixbuf);
2309         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2310         dpi =  d_pix + x * COLOR_BYTES;
2311
2312         for (i = y; i < y + h; i++)
2313                 {
2314                 sp = spi + (i * srs);
2315                 dp = dpi + (i * drs);
2316                 for (j = 0; j < w; j++)
2317                         {
2318                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2319                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2320                         switch(mode)
2321                                 {
2322                                 case RC:
2323                                         dp[0] = g2; /* red channel from sp */
2324                                         dp[1] = g1; /* green and blue from dp */
2325                                         dp[2] = g1;
2326                                         break;
2327                                 case GM:
2328                                         dp[0] = g1;
2329                                         dp[1] = g2;
2330                                         dp[2] = g1;
2331                                         break;
2332                                 case YB:
2333                                         dp[0] = g2;
2334                                         dp[1] = g2;
2335                                         dp[2] = g1;
2336                                         break;
2337                                 }
2338                         sp += COLOR_BYTES;
2339                         dp += COLOR_BYTES;
2340                         }
2341                 }
2342 }
2343
2344 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2345 {
2346         gint srs, drs;
2347         guchar *s_pix, *d_pix;
2348         guchar *sp, *dp;
2349         guchar *spi, *dpi;
2350         gint i, j, k;
2351         double pr_dubois_matrix[3][6];
2352         static const double pr_dubois_matrix_RC[3][6] = {
2353                 { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2354                 {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2355                 {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}};
2356         static const double pr_dubois_matrix_GM[3][6] = {
2357                 {-0.062, -0.158, -0.039,  0.529,  0.705,  0.024},
2358                 { 0.284,  0.668,  0.143, -0.016, -0.015, -0.065},
2359                 {-0.015, -0.027,  0.021,  0.009,  0.075,  0.937}};
2360         static const double pr_dubois_matrix_YB[3][6] = {
2361                 { 1.000, -0.193,  0.282, -0.015, -0.116, -0.016},
2362                 {-0.024,  0.855,  0.064,  0.006,  0.058, -0.016},
2363                 {-0.036, -0.163,  0.021,  0.089,  0.174,  0.858}};
2364
2365         switch(mode)
2366                 {
2367                 case RC:
2368                         memcpy(pr_dubois_matrix, pr_dubois_matrix_RC, sizeof pr_dubois_matrix);
2369                         break;
2370                 case GM:
2371                         memcpy(pr_dubois_matrix, pr_dubois_matrix_GM, sizeof pr_dubois_matrix);
2372                         break;
2373                 case YB:
2374                         memcpy(pr_dubois_matrix, pr_dubois_matrix_YB, sizeof pr_dubois_matrix);
2375                         break;
2376                 }
2377
2378         srs = gdk_pixbuf_get_rowstride(right);
2379         s_pix = gdk_pixbuf_get_pixels(right);
2380         spi = s_pix + (x * COLOR_BYTES);
2381
2382         drs = gdk_pixbuf_get_rowstride(pixbuf);
2383         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2384         dpi =  d_pix + x * COLOR_BYTES;
2385
2386         for (i = y; i < y + h; i++)
2387                 {
2388                 sp = spi + (i * srs);
2389                 dp = dpi + (i * drs);
2390                 for (j = 0; j < w; j++)
2391                         {
2392                         double res[3];
2393                         for (k = 0; k < 3; k++)
2394                                 {
2395                                 const double *m = pr_dubois_matrix[k];
2396                                 res[k] = sp[0] * m[0] + sp[1] * m[1] + sp[2] * m[2] + dp[0] * m[3] + dp[1] * m[4] + dp[2] * m[5];
2397                                 if (res[k] < 0.0) res[k] = 0;
2398                                 if (res[k] > 255.0) res[k] = 255.0;
2399                                 }
2400                         dp[0] = res[0];
2401                         dp[1] = res[1];
2402                         dp[2] = res[2];
2403                         sp += COLOR_BYTES;
2404                         dp += COLOR_BYTES;
2405                         }
2406                 }
2407 }
2408
2409 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2410 {
2411         if (mode & PR_STEREO_ANAGLYPH_RC)
2412                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, RC);
2413         else if (mode & PR_STEREO_ANAGLYPH_GM)
2414                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, GM);
2415         else if (mode & PR_STEREO_ANAGLYPH_YB)
2416                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, YB);
2417         else if (mode & PR_STEREO_ANAGLYPH_GRAY_RC)
2418                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, RC);
2419         else if (mode & PR_STEREO_ANAGLYPH_GRAY_GM)
2420                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, GM);
2421         else if (mode & PR_STEREO_ANAGLYPH_GRAY_YB)
2422                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, YB);
2423         else if (mode & PR_STEREO_ANAGLYPH_DB_RC)
2424                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, RC);
2425         else if (mode & PR_STEREO_ANAGLYPH_DB_GM)
2426                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, GM);
2427         else if (mode & PR_STEREO_ANAGLYPH_DB_YB)
2428                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, YB);
2429 }
2430
2431 /*
2432  *-------------------------------------------------------------------
2433  * public
2434  *-------------------------------------------------------------------
2435  */
2436 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2437 {
2438         pr->stereo_pixbuf_offset_left = 0;
2439         pr->stereo_pixbuf_offset_right = 0;
2440         if (!pr->pixbuf) return;
2441         switch (pr->orientation)
2442                 {
2443                 case EXIF_ORIENTATION_LEFT_TOP:
2444                 case EXIF_ORIENTATION_RIGHT_TOP:
2445                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2446                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2447                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2448                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2449                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2450                                 {
2451                                 pr->image_height /= 2;
2452                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2453                                 }
2454                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2455                                 {
2456                                 pr->image_height /= 2;
2457                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2458                                 }
2459
2460                         break;
2461                 default:
2462                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2463                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2464                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2465                                 {
2466                                 pr->image_width /= 2;
2467                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2468                                 }
2469                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2470                                 {
2471                                 pr->image_width /= 2;
2472                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2473                                 }
2474                 }
2475 }
2476
2477 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2478 {
2479         if (pixbuf) g_object_ref(pixbuf);
2480         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2481         pr->pixbuf = pixbuf;
2482
2483         if (!pr->pixbuf)
2484                 {
2485                 /* no pixbuf so just clear the window */
2486                 pr->image_width = 0;
2487                 pr->image_height = 0;
2488                 pr->scale = 1.0;
2489                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2490                                     and used for pixbuf_renderer_zoom_get */
2491
2492                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2493                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2494
2495                 pr_update_signal(pr);
2496
2497                 return;
2498                 }
2499
2500         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2501                 {
2502                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2503                 pr_stereo_temp_disable(pr, disable);
2504                 }
2505
2506         pr_pixbuf_size_sync(pr);
2507         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2508         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2509         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2510 }
2511
2512 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2513 {
2514         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2515
2516         pr_source_tile_unset(pr);
2517
2518         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2519
2520         pr_update_signal(pr);
2521 }
2522
2523 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2524 {
2525         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2526
2527         pr_source_tile_unset(pr);
2528
2529         pr->orientation = orientation;
2530         pr->stereo_data = stereo_data;
2531         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2532
2533         pr_update_signal(pr);
2534 }
2535
2536 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2537 {
2538         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2539
2540         return pr->pixbuf;
2541 }
2542
2543 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2544 {
2545         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2546
2547         pr->orientation = orientation;
2548
2549         pr_pixbuf_size_sync(pr);
2550         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2551 }
2552
2553 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2554 {
2555         if (!pr) return 1;
2556         return pr->orientation;
2557 }
2558
2559 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2560 {
2561         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2562         if (pr->stereo_data == stereo_data) return;
2563
2564
2565         pr->stereo_data = stereo_data;
2566
2567         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2568                 {
2569                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2570                 pr_stereo_temp_disable(pr, disable);
2571                 }
2572         pr_pixbuf_size_sync(pr);
2573         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2574         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2575         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2576 }
2577
2578 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2579 {
2580         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2581
2582         pr->func_post_process = func;
2583         pr->post_process_user_data = user_data;
2584         pr->post_process_slow = func && slow;
2585
2586 }
2587
2588
2589 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2590 {
2591         GObject *object;
2592         PixbufRendererScrollResetType scroll_reset;
2593
2594         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2595         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2596
2597         if (pr == source) return;
2598
2599         object = G_OBJECT(pr);
2600
2601         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2602         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2603         g_object_set(object, "loading", source->loading, NULL);
2604
2605         pr->complete = source->complete;
2606
2607         pr->x_scroll = source->x_scroll;
2608         pr->y_scroll = source->y_scroll;
2609         pr->x_mouse  = source->x_mouse;
2610         pr->y_mouse  = source->y_mouse;
2611
2612         scroll_reset = pr->scroll_reset;
2613         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2614
2615         pr->func_post_process = source->func_post_process;
2616         pr->post_process_user_data = source->post_process_user_data;
2617         pr->post_process_slow = source->post_process_slow;
2618         pr->orientation = source->orientation;
2619         pr->stereo_data = source->stereo_data;
2620
2621         if (source->source_tiles_enabled)
2622                 {
2623                 pr_source_tile_unset(pr);
2624
2625                 pr->source_tiles_enabled = source->source_tiles_enabled;
2626                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2627                 pr->source_tile_width = source->source_tile_width;
2628                 pr->source_tile_height = source->source_tile_height;
2629                 pr->image_width = source->image_width;
2630                 pr->image_height = source->image_height;
2631
2632                 pr->func_tile_request = source->func_tile_request;
2633                 pr->func_tile_dispose = source->func_tile_dispose;
2634                 pr->func_tile_data = source->func_tile_data;
2635
2636                 pr->source_tiles = source->source_tiles;
2637                 source->source_tiles = NULL;
2638
2639                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2640                 }
2641         else
2642                 {
2643                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2644                 }
2645
2646         pr->scroll_reset = scroll_reset;
2647
2648         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2649 }
2650
2651 void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
2652 {
2653         GObject *object;
2654         PixbufRendererScrollResetType scroll_reset;
2655
2656         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2657         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2658
2659         if (pr == source) return;
2660
2661         object = G_OBJECT(pr);
2662
2663         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2664         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2665         g_object_set(object, "loading", source->loading, NULL);
2666
2667         pr->complete = source->complete;
2668
2669         pr->x_scroll = source->x_scroll;
2670         pr->y_scroll = source->y_scroll;
2671         pr->x_mouse  = source->x_mouse;
2672         pr->y_mouse  = source->y_mouse;
2673
2674         scroll_reset = pr->scroll_reset;
2675         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2676
2677         pr->orientation = source->orientation;
2678         pr->stereo_data = source->stereo_data;
2679
2680         if (source->source_tiles_enabled)
2681                 {
2682                 pr->source_tiles_enabled = source->source_tiles_enabled;
2683                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2684                 pr->source_tile_width = source->source_tile_width;
2685                 pr->source_tile_height = source->source_tile_height;
2686                 pr->image_width = source->image_width;
2687                 pr->image_height = source->image_height;
2688
2689                 pr->func_tile_request = source->func_tile_request;
2690                 pr->func_tile_dispose = source->func_tile_dispose;
2691                 pr->func_tile_data = source->func_tile_data;
2692
2693                 pr->source_tiles = source->source_tiles;
2694                 source->source_tiles = NULL;
2695
2696                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2697                 }
2698         else
2699                 {
2700                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2701                 }
2702
2703         pr->scroll_reset = scroll_reset;
2704 }
2705
2706 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2707 {
2708         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2709
2710         if (pr->source_tiles_enabled)
2711                 {
2712                 pr_source_tile_changed(pr, x, y, w, h);
2713                 }
2714
2715         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2716         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2717 }
2718
2719 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2720 {
2721         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2722
2723         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2724 }
2725
2726 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2727 {
2728         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2729
2730         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2731 }
2732
2733 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2734 {
2735         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2736
2737         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2738 }
2739
2740 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2741 {
2742         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2743
2744         return pr->zoom;
2745 }
2746
2747 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2748 {
2749         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2750
2751         return pr->scale;
2752 }
2753
2754 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2755 {
2756         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2757
2758         if (min > 1.0 || max < 1.0) return;
2759         if (min < 1.0 && min > -1.0) return;
2760         if (min < -200.0 || max > 200.0) return;
2761
2762         if (pr->zoom_min != min)
2763                 {
2764                 pr->zoom_min = min;
2765                 g_object_notify(G_OBJECT(pr), "zoom_min");
2766                 }
2767         if (pr->zoom_max != max)
2768                 {
2769                 pr->zoom_max = max;
2770                 g_object_notify(G_OBJECT(pr), "zoom_max");
2771                 }
2772 }
2773
2774 static void pr_stereo_set(PixbufRenderer *pr)
2775 {
2776         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2777
2778         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2779
2780         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2781                 {
2782                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2783                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2784                 }
2785         else
2786                 {
2787                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2788                 pr->renderer2 = NULL;
2789                 }
2790         if (pr->stereo_mode & PR_STEREO_HALF)
2791                 {
2792                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2793                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2794                 else pr->aspect_ratio = 1.0;
2795                 }
2796         else
2797                 {
2798                 pr->aspect_ratio = 1.0;
2799                 }
2800 }
2801
2802 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2803 {
2804         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2805         pr->stereo_mode = stereo_mode;
2806         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2807
2808         pr->stereo_temp_disable = FALSE;
2809
2810         pr_stereo_set(pr);
2811
2812         if (redraw)
2813                 {
2814                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2815                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2816                 }
2817 }
2818
2819 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2820 {
2821         pr->stereo_fixed_width = width;
2822         pr->stereo_fixed_height = height;
2823         pr->stereo_fixed_x_left = x1;
2824         pr->stereo_fixed_y_left = y1;
2825         pr->stereo_fixed_x_right = x2;
2826         pr->stereo_fixed_y_right = y2;
2827 }
2828
2829 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2830 {
2831         return pr->stereo_mode;
2832 }
2833
2834 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2835 {
2836         if (pr->stereo_temp_disable == disable) return;
2837         pr->stereo_temp_disable = disable;
2838         if (disable)
2839                 {
2840                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2841                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2842                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2843                 pr->renderer2 = NULL;
2844                 pr->aspect_ratio = 1.0;
2845                 }
2846         else
2847                 {
2848                 pr_stereo_set(pr);
2849                 }
2850         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2851 }
2852
2853 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2854                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2855 {
2856         GdkPixbuf *pb = pr->pixbuf;
2857         gint p_alpha, prs;
2858         guchar *p_pix, *pp;
2859         gint map_x, map_y, map_w, map_h;
2860         size_t xoff, yoff;
2861
2862         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2863         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2864
2865         if (!pr->pixbuf && !pr->source_tiles_enabled)
2866                 {
2867                 *r_mouse = -1;
2868                 *g_mouse = -1;
2869                 *b_mouse = -1;
2870                 return FALSE;
2871                 }
2872
2873         if (!pb) return FALSE;
2874
2875         pr_tile_region_map_orientation(pr->orientation,
2876                                         x_pixel, y_pixel,
2877                                         pr->image_width, pr->image_height,
2878                                         1, 1, /*single pixel */
2879                                         &map_x, &map_y,
2880                                         &map_w, &map_h);
2881
2882         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2883         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2884
2885         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2886         prs = gdk_pixbuf_get_rowstride(pb);
2887         p_pix = gdk_pixbuf_get_pixels(pb);
2888
2889         xoff = (size_t)map_x * (p_alpha ? 4 : 3);
2890         yoff = (size_t)map_y * prs;
2891         pp = p_pix + yoff + xoff;
2892         *r_mouse = *pp;
2893         pp++;
2894         *g_mouse = *pp;
2895         pp++;
2896         *b_mouse = *pp;
2897
2898         return TRUE;
2899 }
2900
2901 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2902 {
2903         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2904
2905         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2906         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2907
2908         if (!pr->pixbuf && !pr->source_tiles_enabled)
2909                 {
2910                 *x_pixel_return = -1;
2911                 *y_pixel_return = -1;
2912                 return FALSE;
2913                 }
2914
2915         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2916         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2917         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2918         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2919
2920         if (x_pixel != x_pixel_clamped)
2921                 {
2922                 /* mouse is not on pr */
2923                 x_pixel = -1;
2924                 }
2925         if (y_pixel != y_pixel_clamped)
2926                 {
2927                 /* mouse is not on pr */
2928                 y_pixel = -1;
2929                 }
2930
2931         *x_pixel_return = x_pixel;
2932         *y_pixel_return = y_pixel;
2933
2934         return TRUE;
2935 }
2936
2937 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2938 {
2939         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2940         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2941
2942         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2943                 {
2944                 *width = 0;
2945                 *height = 0;
2946                 return FALSE;
2947                 }
2948
2949         *width = pr->image_width;
2950         *height = pr->image_height;
2951         return TRUE;
2952 }
2953
2954 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2955 {
2956         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2957         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2958
2959         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2960                 {
2961                 *width = 0;
2962                 *height = 0;
2963                 return FALSE;
2964                 }
2965
2966         *width = pr->width;
2967         *height = pr->height;
2968         return TRUE;
2969 }
2970
2971 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2972 {
2973         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2974         g_return_val_if_fail(rect != NULL, FALSE);
2975
2976         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2977             !pr->scale)
2978                 {
2979                 rect->x = 0;
2980                 rect->y = 0;
2981                 rect->width = 0;
2982                 rect->height = 0;
2983                 return FALSE;
2984                 }
2985
2986         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2987         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2988         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2989         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2990         return TRUE;
2991 }
2992
2993 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2994 {
2995         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2996         g_return_val_if_fail(rect != NULL, FALSE);
2997
2998         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2999                 {
3000                 rect->x = 0;
3001                 rect->y = 0;
3002                 rect->width = 0;
3003                 rect->height = 0;
3004                 return FALSE;
3005                 }
3006
3007         rect->x = pr->x_scroll;
3008         rect->y = pr->y_scroll;
3009         rect->width = pr->vis_width;
3010         rect->height = pr->vis_height;
3011         return TRUE;
3012 }
3013
3014 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
3015 {
3016 #if 0
3017         /** @FIXME this function does not consider the image orientation,
3018         so it probably only breaks something */
3019         gdouble zoom;
3020         gint w, h;
3021
3022         zoom = pixbuf_renderer_zoom_get(pr);
3023         pr->image_width = width;
3024         pr->image_height = height;
3025
3026         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
3027
3028         //w = width;
3029         //h = height;
3030
3031         //pr->width = width;
3032         //pr->height = height;
3033 #endif
3034 }
3035
3036 void pixbuf_renderer_set_ignore_alpha(PixbufRenderer *pr, gint ignore_alpha)
3037 {
3038    g_return_if_fail(IS_PIXBUF_RENDERER(pr));
3039
3040    pr->ignore_alpha = ignore_alpha;
3041    pr_pixbuf_size_sync(pr);
3042    pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
3043 }
3044
3045 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */