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 GType pixbuf_renderer_get_type(void)
 153 {
 154         static GType pixbuf_renderer_type = 0;
 155
 156         if (!pixbuf_renderer_type)
 157                 {
 158                 static const GTypeInfo pixbuf_renderer_info =
 159                         {
 160                         sizeof(PixbufRendererClass), /* class_size */
 161                         NULL,           /* base_init */
 162                         NULL,           /* base_finalize */
 163                         (GClassInitFunc)pixbuf_renderer_class_init,
 164                         NULL,           /* class_finalize */
 165                         NULL,           /* class_data */
 166                         sizeof(PixbufRenderer), /* instance_size */
 167                         0,              /* n_preallocs */
 168                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 169                         NULL,           /* value_table */
 170                         };
 171
 172                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 173                                                               &pixbuf_renderer_info, 0);
 174                 }
 175
 176         return pixbuf_renderer_type;
 177 }
 178
 179 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 180 {
 181         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 182
 183         parent_class = g_type_class_peek_parent(class);
 184
 185         gobject_class->set_property = pixbuf_renderer_set_property;
 186         gobject_class->get_property = pixbuf_renderer_get_property;
 187
 188         gobject_class->finalize = pixbuf_renderer_finalize;
 189
 190         g_object_class_install_property(gobject_class,
 191                                         PROP_ZOOM_MIN,
 192                                         g_param_spec_double("zoom_min",
 193                                                             "Zoom minimum",
 194                                                             NULL,
 195                                                             -1000.0,
 196                                                             1000.0,
 197                                                             PR_ZOOM_MIN,
 198                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 199
 200         g_object_class_install_property(gobject_class,
 201                                         PROP_ZOOM_MAX,
 202                                         g_param_spec_double("zoom_max",
 203                                                             "Zoom maximum",
 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_QUALITY,
 212                                         g_param_spec_uint("zoom_quality",
 213                                                           "Zoom quality",
 214                                                           NULL,
 215                                                           GDK_INTERP_NEAREST,
 216                                                           GDK_INTERP_HYPER,
 217                                                           GDK_INTERP_BILINEAR,
 218                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 219
 220         g_object_class_install_property(gobject_class,
 221                                         PROP_ZOOM_2PASS,
 222                                         g_param_spec_boolean("zoom_2pass",
 223                                                              "2 pass zoom",
 224                                                              NULL,
 225                                                              TRUE,
 226                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 227
 228         g_object_class_install_property(gobject_class,
 229                                         PROP_ZOOM_EXPAND,
 230                                         g_param_spec_boolean("zoom_expand",
 231                                                              "Expand image in autozoom.",
 232                                                              NULL,
 233                                                              FALSE,
 234                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 235         g_object_class_install_property(gobject_class,
 236                                         PROP_SCROLL_RESET,
 237                                         g_param_spec_uint("scroll_reset",
 238                                                           "New image scroll reset",
 239                                                           NULL,
 240                                                           PR_SCROLL_RESET_TOPLEFT,
 241                                                           PR_SCROLL_RESET_NOCHANGE,
 242                                                           PR_SCROLL_RESET_TOPLEFT,
 243                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 244
 245         g_object_class_install_property(gobject_class,
 246                                         PROP_DELAY_FLIP,
 247                                         g_param_spec_boolean("delay_flip",
 248                                                              "Delay image update",
 249                                                              NULL,
 250                                                              FALSE,
 251                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 252
 253         g_object_class_install_property(gobject_class,
 254                                         PROP_LOADING,
 255                                         g_param_spec_boolean("loading",
 256                                                              "Image actively loading",
 257                                                              NULL,
 258                                                              FALSE,
 259                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 260
 261         g_object_class_install_property(gobject_class,
 262                                         PROP_COMPLETE,
 263                                         g_param_spec_boolean("complete",
 264                                                              "Image rendering complete",
 265                                                              NULL,
 266                                                              FALSE,
 267                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 268
 269         g_object_class_install_property(gobject_class,
 270                                         PROP_CACHE_SIZE_DISPLAY,
 271                                         g_param_spec_uint("cache_display",
 272                                                           "Display cache size MB",
 273                                                           NULL,
 274                                                           0,
 275                                                           128,
 276                                                           PR_CACHE_SIZE_DEFAULT,
 277                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279         g_object_class_install_property(gobject_class,
 280                                         PROP_CACHE_SIZE_TILES,
 281                                         g_param_spec_uint("cache_tiles",
 282                                                           "Tile cache count",
 283                                                           "Number of tiles to retain in memory at any one time.",
 284                                                           0,
 285                                                           256,
 286                                                           PR_CACHE_SIZE_DEFAULT,
 287                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 288
 289         g_object_class_install_property(gobject_class,
 290                                         PROP_WINDOW_FIT,
 291                                         g_param_spec_boolean("window_fit",
 292                                                              "Fit window to image size",
 293                                                              NULL,
 294                                                              FALSE,
 295                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 296
 297         g_object_class_install_property(gobject_class,
 298                                         PROP_WINDOW_LIMIT,
 299                                         g_param_spec_boolean("window_limit",
 300                                                              "Limit size of parent window",
 301                                                              NULL,
 302                                                              FALSE,
 303                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 304
 305         g_object_class_install_property(gobject_class,
 306                                         PROP_WINDOW_LIMIT_VALUE,
 307                                         g_param_spec_uint("window_limit_value",
 308                                                           "Size limit of parent window",
 309                                                           NULL,
 310                                                           10,
 311                                                           150,
 312                                                           100,
 313                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 314
 315         g_object_class_install_property(gobject_class,
 316                                         PROP_AUTOFIT_LIMIT,
 317                                         g_param_spec_boolean("autofit_limit",
 318                                                              "Limit size of image when autofitting",
 319                                                              NULL,
 320                                                              FALSE,
 321                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 322
 323         g_object_class_install_property(gobject_class,
 324                                         PROP_AUTOFIT_LIMIT_VALUE,
 325                                         g_param_spec_uint("autofit_limit_value",
 326                                                           "Size limit of image when autofitting",
 327                                                           NULL,
 328                                                           10,
 329                                                           150,
 330                                                           100,
 331                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 332
 333         g_object_class_install_property(gobject_class,
 334                                         PROP_ENLARGEMENT_LIMIT_VALUE,
 335                                         g_param_spec_uint("enlargement_limit_value",
 336                                                           "Size increase limit of image when autofitting",
 337                                                           NULL,
 338                                                           100,
 339                                                           999,
 340                                                           500,
 341                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 342
 343
 344         signals[SIGNAL_ZOOM] =
 345                 g_signal_new("zoom",
 346                              G_OBJECT_CLASS_TYPE(gobject_class),
 347                              G_SIGNAL_RUN_LAST,
 348                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 349                              NULL, NULL,
 350                              g_cclosure_marshal_VOID__DOUBLE,
 351                              G_TYPE_NONE, 1,
 352                              G_TYPE_DOUBLE);
 353
 354         signals[SIGNAL_CLICKED] =
 355                 g_signal_new("clicked",
 356                              G_OBJECT_CLASS_TYPE(gobject_class),
 357                              G_SIGNAL_RUN_LAST,
 358                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 359                              NULL, NULL,
 360                              g_cclosure_marshal_VOID__BOXED,
 361                              G_TYPE_NONE, 1,
 362                              GDK_TYPE_EVENT);
 363
 364         signals[SIGNAL_SCROLL_NOTIFY] =
 365                 g_signal_new("scroll-notify",
 366                              G_OBJECT_CLASS_TYPE(gobject_class),
 367                              G_SIGNAL_RUN_LAST,
 368                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 369                              NULL, NULL,
 370                              g_cclosure_marshal_VOID__VOID,
 371                              G_TYPE_NONE, 0);
 372
 373         signals[SIGNAL_RENDER_COMPLETE] =
 374                 g_signal_new("render-complete",
 375                              G_OBJECT_CLASS_TYPE(gobject_class),
 376                              G_SIGNAL_RUN_LAST,
 377                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 378                              NULL, NULL,
 379                              g_cclosure_marshal_VOID__VOID,
 380                              G_TYPE_NONE, 0);
 381
 382         signals[SIGNAL_DRAG] =
 383                 g_signal_new("drag",
 384                              G_OBJECT_CLASS_TYPE(gobject_class),
 385                              G_SIGNAL_RUN_LAST,
 386                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 387                              NULL, NULL,
 388                              g_cclosure_marshal_VOID__BOXED,
 389                              G_TYPE_NONE, 1,
 390                              GDK_TYPE_EVENT);
 391
 392         signals[SIGNAL_UPDATE_PIXEL] =
 393                 g_signal_new("update-pixel",
 394                              G_OBJECT_CLASS_TYPE(gobject_class),
 395                              G_SIGNAL_RUN_LAST,
 396                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 397                              NULL, NULL,
 398                              g_cclosure_marshal_VOID__VOID,
 399                              G_TYPE_NONE, 0);
 400 }
 401
 402 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 403 {
 404         if (options->image.use_clutter_renderer)
 405                 {
 406 #ifdef HAVE_CLUTTER
 407                 return renderer_clutter_new(pr);
 408 #else
 409                 DEBUG_0("Geeqie is built without clutter renderer support");
 410 #endif
 411                 }
 412         return renderer_tiles_new(pr);
 413 }
 414
 415
 416 static void pixbuf_renderer_init(PixbufRenderer *pr)
 417 {
 418         GtkWidget *box;
 419
 420         box = GTK_WIDGET(pr);
 421
 422         pr->zoom_min = PR_ZOOM_MIN;
 423         pr->zoom_max = PR_ZOOM_MAX;
 424         pr->zoom_quality = GDK_INTERP_BILINEAR;
 425         pr->zoom_2pass = FALSE;
 426
 427         pr->zoom = 1.0;
 428         pr->scale = 1.0;
 429         pr->aspect_ratio = 1.0;
 430
 431         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 432
 433         pr->scroller_id = 0;
 434         pr->scroller_overlay = -1;
 435
 436         pr->x_mouse = -1;
 437         pr->y_mouse = -1;
 438
 439         pr->source_tiles_enabled = FALSE;
 440         pr->source_tiles = NULL;
 441
 442         pr->orientation = 1;
 443
 444         pr->norm_center_x = 0.5;
 445         pr->norm_center_y = 0.5;
 446
 447         pr->stereo_mode = PR_STEREO_NONE;
 448
 449         pr->color.red =0;
 450         pr->color.green =0;
 451         pr->color.blue =0;
 452
 453         pr->renderer = pr_backend_renderer_new(pr);
 454
 455         pr->renderer2 = NULL;
 456
 457         gtk_widget_set_double_buffered(box, FALSE);
 458         gtk_widget_set_app_paintable(box, TRUE);
 459         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 460                                G_CALLBACK(pr_size_cb), pr);
 461
 462         pr_signals_connect(pr);
 463 }
 464
 465 static void pixbuf_renderer_finalize(GObject *object)
 466 {
 467         PixbufRenderer *pr;
 468
 469         pr = PIXBUF_RENDERER(object);
 470
 471         pr->renderer->free(pr->renderer);
 472         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 473
 474
 475         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 476
 477         pr_scroller_timer_set(pr, FALSE);
 478
 479         pr_source_tile_free_all(pr);
 480 }
 481
 482 PixbufRenderer *pixbuf_renderer_new(void)
 483 {
 484         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 485 }
 486
 487 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 488                                          const GValue *value, GParamSpec *pspec)
 489 {
 490         PixbufRenderer *pr;
 491
 492         pr = PIXBUF_RENDERER(object);
 493
 494         switch (prop_id)
 495                 {
 496                 case PROP_ZOOM_MIN:
 497                         pr->zoom_min = g_value_get_double(value);
 498                         break;
 499                 case PROP_ZOOM_MAX:
 500                         pr->zoom_max = g_value_get_double(value);
 501                         break;
 502                 case PROP_ZOOM_QUALITY:
 503                         pr->zoom_quality = g_value_get_uint(value);
 504                         break;
 505                 case PROP_ZOOM_2PASS:
 506                         pr->zoom_2pass = g_value_get_boolean(value);
 507                         break;
 508                 case PROP_ZOOM_EXPAND:
 509                         pr->zoom_expand = g_value_get_boolean(value);
 510                         break;
 511                 case PROP_SCROLL_RESET:
 512                         pr->scroll_reset = g_value_get_uint(value);
 513                         break;
 514                 case PROP_DELAY_FLIP:
 515                         pr->delay_flip = g_value_get_boolean(value);
 516                         break;
 517                 case PROP_LOADING:
 518                         pr->loading = g_value_get_boolean(value);
 519                         break;
 520                 case PROP_COMPLETE:
 521                         pr->complete = g_value_get_boolean(value);
 522                         break;
 523                 case PROP_CACHE_SIZE_DISPLAY:
 524 //                      pr->tile_cache_max = g_value_get_uint(value);
 525                         break;
 526                 case PROP_CACHE_SIZE_TILES:
 527                         pr->source_tiles_cache_size = g_value_get_uint(value);
 528                         break;
 529                 case PROP_WINDOW_FIT:
 530                         pr->window_fit = g_value_get_boolean(value);
 531                         break;
 532                 case PROP_WINDOW_LIMIT:
 533                         pr->window_limit = g_value_get_boolean(value);
 534                         break;
 535                 case PROP_WINDOW_LIMIT_VALUE:
 536                         pr->window_limit_size = g_value_get_uint(value);
 537                         break;
 538                 case PROP_AUTOFIT_LIMIT:
 539                         pr->autofit_limit = g_value_get_boolean(value);
 540                         break;
 541                 case PROP_AUTOFIT_LIMIT_VALUE:
 542                         pr->autofit_limit_size = g_value_get_uint(value);
 543                         break;
 544                 case PROP_ENLARGEMENT_LIMIT_VALUE:
 545                         pr->enlargement_limit_size = g_value_get_uint(value);
 546                         break;
 547                 default:
 548                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 549                         break;
 550                 }
 551 }
 552
 553 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 554                                          GValue *value, GParamSpec *pspec)
 555 {
 556         PixbufRenderer *pr;
 557
 558         pr = PIXBUF_RENDERER(object);
 559
 560         switch (prop_id)
 561                 {
 562                 case PROP_ZOOM_MIN:
 563                         g_value_set_double(value, pr->zoom_min);
 564                         break;
 565                 case PROP_ZOOM_MAX:
 566                         g_value_set_double(value, pr->zoom_max);
 567                         break;
 568                 case PROP_ZOOM_QUALITY:
 569                         g_value_set_uint(value, pr->zoom_quality);
 570                         break;
 571                 case PROP_ZOOM_2PASS:
 572                         g_value_set_boolean(value, pr->zoom_2pass);
 573                         break;
 574                 case PROP_ZOOM_EXPAND:
 575                         g_value_set_boolean(value, pr->zoom_expand);
 576                         break;
 577                 case PROP_SCROLL_RESET:
 578                         g_value_set_uint(value, pr->scroll_reset);
 579                         break;
 580                 case PROP_DELAY_FLIP:
 581                         g_value_set_boolean(value, pr->delay_flip);
 582                         break;
 583                 case PROP_LOADING:
 584                         g_value_set_boolean(value, pr->loading);
 585                         break;
 586                 case PROP_COMPLETE:
 587                         g_value_set_boolean(value, pr->complete);
 588                         break;
 589                 case PROP_CACHE_SIZE_DISPLAY:
 590 //                      g_value_set_uint(value, pr->tile_cache_max);
 591                         break;
 592                 case PROP_CACHE_SIZE_TILES:
 593                         g_value_set_uint(value, pr->source_tiles_cache_size);
 594                         break;
 595                 case PROP_WINDOW_FIT:
 596                         g_value_set_boolean(value, pr->window_fit);
 597                         break;
 598                 case PROP_WINDOW_LIMIT:
 599                         g_value_set_boolean(value, pr->window_limit);
 600                         break;
 601                 case PROP_WINDOW_LIMIT_VALUE:
 602                         g_value_set_uint(value, pr->window_limit_size);
 603                         break;
 604                 case PROP_AUTOFIT_LIMIT:
 605                         g_value_set_boolean(value, pr->autofit_limit);
 606                         break;
 607                 case PROP_AUTOFIT_LIMIT_VALUE:
 608                         g_value_set_uint(value, pr->autofit_limit_size);
 609                         break;
 610                 case PROP_ENLARGEMENT_LIMIT_VALUE:
 611                         g_value_set_uint(value, pr->enlargement_limit_size);
 612                         break;
 613                 default:
 614                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 615                         break;
 616                 }
 617 }
 618
 619
 620 /*
 621  *-------------------------------------------------------------------
 622  * misc utilities
 623  *-------------------------------------------------------------------
 624  */
 625
 626 static void widget_set_cursor(GtkWidget *widget, gint icon)
 627 {
 628         GdkCursor *cursor;
 629
 630         if (!gtk_widget_get_window(widget)) return;
 631
 632         if (icon == -1)
 633                 {
 634                 cursor = NULL;
 635                 }
 636         else
 637                 {
 638                 cursor = gdk_cursor_new(icon);
 639                 }
 640
 641         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 642
 643         if (cursor) gdk_cursor_unref(cursor);
 644 }
 645
 646 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 647                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 648                                gint *rx, gint *ry, gint *rw, gint *rh)
 649 {
 650         if (clip_x + clip_w <= x ||
 651             clip_x >= x + w ||
 652             clip_y + clip_h <= y ||
 653             clip_y >= y + h)
 654                 {
 655                 return FALSE;
 656                 }
 657
 658         *rx = MAX(x, clip_x);
 659         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 660
 661         *ry = MAX(y, clip_y);
 662         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 663
 664         return TRUE;
 665 }
 666
 667 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 668 {
 669         GdkWindowState state;
 670
 671         if (!pr->parent_window) return FALSE;
 672         if (!pr->window_fit) return FALSE;
 673         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 674
 675         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 676         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 677         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 678
 679         return TRUE;
 680 }
 681
 682 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 683 {
 684         GtkWidget *widget;
 685         GtkWidget *parent;
 686         gint ww, wh;
 687         GtkAllocation widget_allocation;
 688         GtkAllocation parent_allocation;
 689
 690         if (!pr_parent_window_sizable(pr)) return FALSE;
 691
 692         if (pr->window_limit)
 693                 {
 694                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 695                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 696
 697                 if (w > sw) w = sw;
 698                 if (h > sh) h = sh;
 699                 }
 700
 701         widget = GTK_WIDGET(pr);
 702         parent = GTK_WIDGET(pr->parent_window);
 703
 704         gtk_widget_get_allocation(widget, &widget_allocation);
 705         gtk_widget_get_allocation(parent, &parent_allocation);
 706
 707         w += (parent_allocation.width - widget_allocation.width);
 708         h += (parent_allocation.height - widget_allocation.height);
 709
 710         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 711         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 712         if (w == ww && h == wh) return FALSE;
 713
 714         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 715
 716         return TRUE;
 717 }
 718
 719 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 720 {
 721         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 722         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 723
 724         pr->parent_window = GTK_WIDGET(window);
 725 }
 726
 727 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 728 {
 729         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 730
 731         return GTK_WINDOW(pr->parent_window);
 732 }
 733
 734
 735 /*
 736  *-------------------------------------------------------------------
 737  * overlays
 738  *-------------------------------------------------------------------
 739  */
 740
 741
 742 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 743                                  OverlayRendererFlags flags)
 744 {
 745         /* let's assume both renderers returns the same value */
 746         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 747         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 748 }
 749
 750 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 751 {
 752         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 753         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 754 }
 755
 756 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 757 {
 758         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 759         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 760 }
 761
 762 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 763 {
 764         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 765         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 766 }
 767
 768 /*
 769  *-------------------------------------------------------------------
 770  * scroller overlay
 771  *-------------------------------------------------------------------
 772  */
 773
 774
 775 static gboolean pr_scroller_update_cb(gpointer data)
 776 {
 777         PixbufRenderer *pr = data;
 778         gint x, y;
 779         gint xinc, yinc;
 780
 781         /* this was a simple scroll by difference between scroller and mouse position,
 782          * but all this math results in a smoother result and accounts for a dead zone.
 783          */
 784
 785         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 786                 {
 787                 x = 0;
 788                 }
 789         else
 790                 {
 791                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 792                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 793                 x += (x > 0) ? -shift : shift;
 794                 }
 795
 796         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 797                 {
 798                 y = 0;
 799                 }
 800         else
 801                 {
 802                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 803                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 804                 y += (y > 0) ? -shift : shift;
 805                 }
 806
 807         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 808                 {
 809                 xinc = x;
 810                 }
 811         else
 812                 {
 813                 xinc = pr->scroller_xinc;
 814
 815                 if (x >= 0)
 816                         {
 817                         if (xinc < 0) xinc = 0;
 818                         if (x < xinc) xinc = x;
 819                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 820                         }
 821                 else
 822                         {
 823                         if (xinc > 0) xinc = 0;
 824                         if (x > xinc) xinc = x;
 825                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 826                         }
 827                 }
 828
 829         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 830                 {
 831                 yinc = y;
 832                 }
 833         else
 834                 {
 835                 yinc = pr->scroller_yinc;
 836
 837                 if (y >= 0)
 838                         {
 839                         if (yinc < 0) yinc = 0;
 840                         if (y < yinc) yinc = y;
 841                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 842                         }
 843                 else
 844                         {
 845                         if (yinc > 0) yinc = 0;
 846                         if (y > yinc) yinc = y;
 847                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 848                         }
 849                 }
 850
 851         pr->scroller_xinc = xinc;
 852         pr->scroller_yinc = yinc;
 853
 854         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 855         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 856
 857         pixbuf_renderer_scroll(pr, xinc, yinc);
 858
 859         return TRUE;
 860 }
 861
 862 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 863 {
 864         if (pr->scroller_id)
 865                 {
 866                 g_source_remove(pr->scroller_id);
 867                 pr->scroller_id = 0;
 868                 }
 869
 870         if (start)
 871                 {
 872                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 873                                                 pr_scroller_update_cb, pr);
 874                 }
 875 }
 876
 877 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 878 {
 879         if (pr->scroller_overlay == -1)
 880                 {
 881                 GdkPixbuf *pixbuf;
 882                 gint w, h;
 883
 884 #ifdef GQ_BUILD
 885                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 886 #else
 887                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 888                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 889 #endif
 890                 w = gdk_pixbuf_get_width(pixbuf);
 891                 h = gdk_pixbuf_get_height(pixbuf);
 892
 893                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 894                 g_object_unref(pixbuf);
 895                 }
 896
 897         pr->scroller_x = x;
 898         pr->scroller_y = y;
 899         pr->scroller_xpos = x;
 900         pr->scroller_ypos = y;
 901
 902         pr_scroller_timer_set(pr, TRUE);
 903 }
 904
 905 static void pr_scroller_stop(PixbufRenderer *pr)
 906 {
 907         if (!pr->scroller_id) return;
 908
 909         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 910         pr->scroller_overlay = -1;
 911
 912         pr_scroller_timer_set(pr, FALSE);
 913 }
 914
 915 /*
 916  *-------------------------------------------------------------------
 917  * borders
 918  *-------------------------------------------------------------------
 919  */
 920
 921 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 922 {
 923         GtkStyle *style;
 924         GtkWidget *widget;
 925
 926         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 927
 928         if (color)
 929                 {
 930                 pr->color.red = color->red;
 931                 pr->color.green = color->green;
 932                 pr->color.blue = color->blue;
 933                 }
 934         else
 935                 {
 936                 pr->color.red = 0;
 937                 pr->color.green = 0;
 938                 pr->color.blue = 0;
 939                 }
 940
 941         pr->renderer->update_viewport(pr->renderer);
 942         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 943 }
 944
 945 /*
 946  *-------------------------------------------------------------------
 947  * source tiles
 948  *-------------------------------------------------------------------
 949  */
 950
 951 static void pr_source_tile_free(SourceTile *st)
 952 {
 953         if (!st) return;
 954
 955         if (st->pixbuf) g_object_unref(st->pixbuf);
 956         g_free(st);
 957 }
 958
 959 static void pr_source_tile_free_all(PixbufRenderer *pr)
 960 {
 961         GList *work;
 962
 963         work = pr->source_tiles;
 964         while (work)
 965                 {
 966                 SourceTile *st;
 967
 968                 st = work->data;
 969                 work = work->next;
 970
 971                 pr_source_tile_free(st);
 972                 }
 973
 974         g_list_free(pr->source_tiles);
 975         pr->source_tiles = NULL;
 976 }
 977
 978 static void pr_source_tile_unset(PixbufRenderer *pr)
 979 {
 980         pr_source_tile_free_all(pr);
 981         pr->source_tiles_enabled = FALSE;
 982 }
 983
 984 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 985 {
 986         gint x1, y1, x2, y2;
 987
 988         if (!st) return FALSE;
 989
 990 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 991 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 992 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 993 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 994         x1 = pr->x_scroll;
 995         y1 = pr->y_scroll;
 996         x2 = pr->x_scroll + pr->vis_width;
 997         y2 = pr->y_scroll + pr->vis_height;
 998
 999         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
1000                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
1001                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
1002                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
1003 }
1004
1005 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
1006 {
1007         SourceTile *st = NULL;
1008         gint count;
1009
1010         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
1011
1012         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
1013
1014         count = g_list_length(pr->source_tiles);
1015         if (count >= pr->source_tiles_cache_size)
1016                 {
1017                 GList *work;
1018
1019                 work = g_list_last(pr->source_tiles);
1020                 while (work && count >= pr->source_tiles_cache_size)
1021                         {
1022                         SourceTile *needle;
1023
1024                         needle = work->data;
1025                         work = work->prev;
1026
1027                         if (!pr_source_tile_visible(pr, needle))
1028                                 {
1029                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1030
1031                                 if (pr->func_tile_dispose)
1032                                         {
1033                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1034                                                               pr->source_tile_width, pr->source_tile_height,
1035                                                               needle->pixbuf, pr->func_tile_data);
1036                                         }
1037
1038                                 if (!st)
1039                                         {
1040                                         st = needle;
1041                                         }
1042                                 else
1043                                         {
1044                                         pr_source_tile_free(needle);
1045                                         }
1046
1047                                 count--;
1048                                 }
1049                         }
1050                 }
1051
1052         if (!st)
1053                 {
1054                 st = g_new0(SourceTile, 1);
1055                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1056                                             pr->source_tile_width, pr->source_tile_height);
1057                 }
1058
1059         st->x = ROUND_DOWN(x, pr->source_tile_width);
1060         st->y = ROUND_DOWN(y, pr->source_tile_height);
1061         st->blank = TRUE;
1062
1063         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1064
1065         return st;
1066 }
1067
1068 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1069 {
1070         SourceTile *st;
1071
1072         st = pr_source_tile_new(pr, x, y);
1073         if (!st) return NULL;
1074
1075         if (pr->func_tile_request &&
1076             pr->func_tile_request(pr, st->x, st->y,
1077                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1078                 {
1079                 st->blank = FALSE;
1080                 }
1081
1082         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1083                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1084         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1085                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1086         return st;
1087 }
1088
1089 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1090 {
1091         GList *work;
1092
1093         work = pr->source_tiles;
1094         while (work)
1095                 {
1096                 SourceTile *st = work->data;
1097
1098                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1099                     y >= st->y && y < st->y + pr->source_tile_height)
1100                         {
1101                         if (work != pr->source_tiles)
1102                                 {
1103                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1104                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1105                                 }
1106                         return st;
1107                         }
1108
1109                 work = work->next;
1110                 }
1111
1112         return NULL;
1113 }
1114
1115 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1116 {
1117         gint x1, y1;
1118         GList *list = NULL;
1119         gint sx, sy;
1120
1121         if (x < 0) x = 0;
1122         if (y < 0) y = 0;
1123         if (w > pr->image_width) w = pr->image_width;
1124         if (h > pr->image_height) h = pr->image_height;
1125
1126         sx = ROUND_DOWN(x, pr->source_tile_width);
1127         sy = ROUND_DOWN(y, pr->source_tile_height);
1128
1129         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1130                 {
1131                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1132                         {
1133                         SourceTile *st;
1134
1135                         st = pr_source_tile_find(pr, x1, y1);
1136                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1137
1138                         if (st) list = g_list_prepend(list, st);
1139                         }
1140                 }
1141
1142         return g_list_reverse(list);
1143 }
1144
1145 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1146 {
1147         GList *work;
1148
1149         if (width < 1 || height < 1) return;
1150
1151         work = pr->source_tiles;
1152         while (work)
1153                 {
1154                 SourceTile *st;
1155                 gint rx, ry, rw, rh;
1156
1157                 st = work->data;
1158                 work = work->next;
1159
1160                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1161                                    x, y, width, height,
1162                                    &rx, &ry, &rw, &rh))
1163                         {
1164                         GdkPixbuf *pixbuf;
1165
1166                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1167                         if (pr->func_tile_request &&
1168                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1169                                 {
1170                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1171                                                               rw * pr->scale, rh * pr->scale);
1172                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1173                                                                 rw * pr->scale, rh * pr->scale);
1174                                 }
1175                         g_object_unref(pixbuf);
1176                         }
1177                 }
1178 }
1179
1180 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1181                                gint tile_width, gint tile_height, gint cache_size,
1182                                PixbufRendererTileRequestFunc func_request,
1183                                PixbufRendererTileDisposeFunc func_dispose,
1184                                gpointer user_data,
1185                                gdouble zoom)
1186 {
1187         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1188         g_return_if_fail(tile_width >= 32 && tile_height >= 32);
1189         g_return_if_fail(width >= 32 && height > 32);
1190         g_return_if_fail(func_request != NULL);
1191
1192         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1193         pr->pixbuf = NULL;
1194
1195         pr_source_tile_unset(pr);
1196
1197         if (cache_size < 4) cache_size = 4;
1198
1199         pr->source_tiles_enabled = TRUE;
1200         pr->source_tiles_cache_size = cache_size;
1201         pr->source_tile_width = tile_width;
1202         pr->source_tile_height = tile_height;
1203
1204         pr->image_width = width;
1205         pr->image_height = height;
1206
1207         pr->func_tile_request = func_request;
1208         pr->func_tile_dispose = func_dispose;
1209         pr->func_tile_data = user_data;
1210
1211         pr_stereo_temp_disable(pr, TRUE);
1212         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1213 }
1214
1215 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1216 {
1217         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1218         g_return_if_fail(width >= 32 && height > 32);
1219
1220         if (!pr->source_tiles_enabled) return;
1221         if (pr->image_width == width && pr->image_height == height) return;
1222
1223         pr->image_width = width;
1224         pr->image_height = height;
1225
1226         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1227 }
1228
1229 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1230 {
1231         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1232
1233         return pr->source_tiles_enabled;
1234 }
1235
1236 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1237                                 PrZoomFlags flags, gint x, gint y)
1238 {
1239         gdouble zoom = pr->zoom;
1240
1241         if (increment == 0.0) return;
1242
1243         if (zoom == 0.0)
1244                 {
1245                 if (pr->scale < 1.0)
1246                         {
1247                         zoom = 0.0 - 1.0 / pr->scale;
1248                         }
1249                 else
1250                         {
1251                         zoom = pr->scale;
1252                         }
1253                 }
1254
1255         if (increment < 0.0)
1256                 {
1257                 if (zoom >= 1.0 && zoom + increment < 1.0)
1258                         {
1259                         zoom = zoom + increment - 2.0;
1260                         }
1261                 else
1262                         {
1263                         zoom = zoom + increment;
1264                         }
1265                 }
1266         else
1267                 {
1268                 if (zoom <= -1.0 && zoom + increment > -1.0)
1269                         {
1270                         zoom = zoom + increment + 2.0;
1271                         }
1272                 else
1273                         {
1274                         zoom = zoom + increment;
1275                         }
1276                 }
1277
1278         pr_zoom_sync(pr, zoom, flags, x, y);
1279 }
1280
1281
1282 /*
1283  *-------------------------------------------------------------------
1284  * signal emission
1285  *-------------------------------------------------------------------
1286  */
1287
1288 static void pr_update_signal(PixbufRenderer *pr)
1289 {
1290         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1291         pr->debug_updated = TRUE;
1292 }
1293
1294 static void pr_zoom_signal(PixbufRenderer *pr)
1295 {
1296         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1297 }
1298
1299 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1300 {
1301         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1302 }
1303
1304 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1305 {
1306         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1307 }
1308
1309 void pr_render_complete_signal(PixbufRenderer *pr)
1310 {
1311         if (!pr->complete)
1312                 {
1313                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1314                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1315                 }
1316         if (pr->debug_updated)
1317                 {
1318                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1319                 pr->debug_updated = FALSE;
1320                 }
1321 }
1322
1323 static void pr_drag_signal(PixbufRenderer *pr, GdkEventMotion *event)
1324 {
1325         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, event);
1326 }
1327
1328 static void pr_update_pixel_signal(PixbufRenderer *pr)
1329 {
1330         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1331 }
1332
1333 /*
1334  *-------------------------------------------------------------------
1335  * sync and clamp
1336  *-------------------------------------------------------------------
1337  */
1338
1339
1340 void pr_tile_coords_map_orientation(gint orientation,
1341                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1342                                      gdouble image_w, gdouble image_h,
1343                                      gdouble tile_w, gdouble tile_h,
1344                                      gdouble *res_x, gdouble *res_y)
1345 {
1346         *res_x = tile_x;
1347         *res_y = tile_y;
1348         switch (orientation)
1349                 {
1350                 case EXIF_ORIENTATION_TOP_LEFT:
1351                         /* normal -- nothing to do */
1352                         break;
1353                 case EXIF_ORIENTATION_TOP_RIGHT:
1354                         /* mirrored */
1355                         *res_x = image_w - tile_x - tile_w;
1356                         break;
1357                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1358                         /* upside down */
1359                         *res_x = image_w - tile_x - tile_w;
1360                         *res_y = image_h - tile_y - tile_h;
1361                         break;
1362                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1363                         /* flipped */
1364                         *res_y = image_h - tile_y - tile_h;
1365                         break;
1366                 case EXIF_ORIENTATION_LEFT_TOP:
1367                         *res_x = tile_y;
1368                         *res_y = tile_x;
1369                         break;
1370                 case EXIF_ORIENTATION_RIGHT_TOP:
1371                         /* rotated -90 (270) */
1372                         *res_x = tile_y;
1373                         *res_y = image_w - tile_x - tile_w;
1374                         break;
1375                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1376                         *res_x = image_h - tile_y - tile_h;
1377                         *res_y = image_w - tile_x - tile_w;
1378                         break;
1379                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1380                         /* rotated 90 */
1381                         *res_x = image_h - tile_y - tile_h;
1382                         *res_y = tile_x;
1383                         break;
1384                 default:
1385                         /* The other values are out of range */
1386                         break;
1387                 }
1388 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1389 }
1390
1391 void pr_tile_region_map_orientation(gint orientation,
1392                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1393                                      gint tile_w, gint tile_h,
1394                                      gint area_w, gint area_h,
1395                                      gint *res_x, gint *res_y,
1396                                      gint *res_w, gint *res_h)
1397 {
1398         *res_x = area_x;
1399         *res_y = area_y;
1400         *res_w = area_w;
1401         *res_h = area_h;
1402
1403         switch (orientation)
1404                 {
1405                 case EXIF_ORIENTATION_TOP_LEFT:
1406                         /* normal -- nothing to do */
1407                         break;
1408                 case EXIF_ORIENTATION_TOP_RIGHT:
1409                         /* mirrored */
1410                         *res_x = tile_w - area_x - area_w;
1411                         break;
1412                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1413                         /* upside down */
1414                         *res_x = tile_w - area_x - area_w;
1415                         *res_y = tile_h - area_y - area_h;
1416                         break;
1417                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1418                         /* flipped */
1419                         *res_y = tile_h - area_y - area_h;
1420                         break;
1421                 case EXIF_ORIENTATION_LEFT_TOP:
1422                         *res_x = area_y;
1423                         *res_y = area_x;
1424                         *res_w = area_h;
1425                         *res_h = area_w;
1426                         break;
1427                 case EXIF_ORIENTATION_RIGHT_TOP:
1428                         /* rotated -90 (270) */
1429                         *res_x = area_y;
1430                         *res_y = tile_w - area_x - area_w;
1431                         *res_w = area_h;
1432                         *res_h = area_w;
1433                         break;
1434                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1435                         *res_x = tile_h - area_y - area_h;
1436                         *res_y = tile_w - area_x - area_w;
1437                         *res_w = area_h;
1438                         *res_h = area_w;
1439                         break;
1440                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1441                         /* rotated 90 */
1442                         *res_x = tile_h - area_y - area_h;
1443                         *res_y = area_x;
1444                         *res_w = area_h;
1445                         *res_h = area_w;
1446                         break;
1447                 default:
1448                         /* The other values are out of range */
1449                         break;
1450                 }
1451 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1452 }
1453
1454 void pr_coords_map_orientation_reverse(gint orientation,
1455                                      gint area_x, gint area_y,
1456                                      gint tile_w, gint tile_h,
1457                                      gint area_w, gint area_h,
1458                                      gint *res_x, gint *res_y,
1459                                      gint *res_w, gint *res_h)
1460 {
1461         *res_x = area_x;
1462         *res_y = area_y;
1463         *res_w = area_w;
1464         *res_h = area_h;
1465
1466         switch (orientation)
1467                 {
1468                 case EXIF_ORIENTATION_TOP_LEFT:
1469                         /* normal -- nothing to do */
1470                         break;
1471                 case EXIF_ORIENTATION_TOP_RIGHT:
1472                         /* mirrored */
1473                         *res_x = tile_w - area_x - area_w;
1474                         break;
1475                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1476                         /* upside down */
1477                         *res_x = tile_w - area_x - area_w;
1478                         *res_y = tile_h - area_y - area_h;
1479                         break;
1480                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1481                         /* flipped */
1482                         *res_y = tile_h - area_y - area_h;
1483                         break;
1484                 case EXIF_ORIENTATION_LEFT_TOP:
1485                         *res_x = area_y;
1486                         *res_y = area_x;
1487                         *res_w = area_h;
1488                         *res_h = area_w;
1489                         break;
1490                 case EXIF_ORIENTATION_RIGHT_TOP:
1491                         /* rotated -90 (270) */
1492                         *res_x = tile_w - area_y - area_h;
1493                         *res_y = area_x;
1494                         *res_w = area_h;
1495                         *res_h = area_w;
1496                         break;
1497                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1498                         *res_x = tile_w - area_y - area_h;
1499                         *res_y = tile_h - area_x - area_w;
1500                         *res_w = area_h;
1501                         *res_h = area_w;
1502                         break;
1503                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1504                         /* rotated 90 */
1505                         *res_x = area_y;
1506                         *res_y = tile_h - area_x - area_w;
1507                         *res_w = area_h;
1508                         *res_h = area_w;
1509                         break;
1510                 default:
1511                         /* The other values are out of range */
1512                         break;
1513                 }
1514 }
1515
1516
1517
1518 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1519 {
1520         gint src_x, src_y;
1521         if (!pr->width || !pr->height) return;
1522
1523         /*
1524          * Update norm_center only if the image is bigger than the window.
1525          * With this condition the stored center survives also a temporary display
1526          * of the "broken image" icon.
1527         */
1528
1529         if (pr->width > pr->viewport_width)
1530                 {
1531                 src_x = pr->x_scroll + pr->vis_width / 2;
1532                 pr->norm_center_x = (gdouble)src_x / pr->width;
1533                 }
1534
1535         if (pr->height > pr->viewport_height)
1536                 {
1537                 src_y = pr->y_scroll + pr->vis_height / 2;
1538                 pr->norm_center_y = (gdouble)src_y / pr->height;
1539                 }
1540 }
1541
1542
1543 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1544 {
1545         gint old_xs;
1546         gint old_ys;
1547
1548         if (pr->zoom == 0.0)
1549                 {
1550                 pr->x_scroll = 0;
1551                 pr->y_scroll = 0;
1552
1553                 return FALSE;
1554                 }
1555
1556         old_xs = pr->x_scroll;
1557         old_ys = pr->y_scroll;
1558
1559         if (pr->x_offset > 0)
1560                 {
1561                 pr->x_scroll = 0;
1562                 }
1563         else
1564                 {
1565                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1566                 }
1567
1568         if (pr->y_offset > 0)
1569                 {
1570                 pr->y_scroll = 0;
1571                 }
1572         else
1573                 {
1574                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1575                 }
1576
1577         pixbuf_renderer_sync_scroll_center(pr);
1578
1579         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1580 }
1581
1582 static gboolean pr_size_clamp(PixbufRenderer *pr)
1583 {
1584         gint old_vw, old_vh;
1585
1586         old_vw = pr->vis_width;
1587         old_vh = pr->vis_height;
1588
1589         if (pr->width < pr->viewport_width)
1590                 {
1591                 pr->vis_width = pr->width;
1592                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1593                 }
1594         else
1595                 {
1596                 pr->vis_width = pr->viewport_width;
1597                 pr->x_offset = 0;
1598                 }
1599
1600         if (pr->height < pr->viewport_height)
1601                 {
1602                 pr->vis_height = pr->height;
1603                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1604                 }
1605         else
1606                 {
1607                 pr->vis_height = pr->viewport_height;
1608                 pr->y_offset = 0;
1609                 }
1610
1611         pixbuf_renderer_sync_scroll_center(pr);
1612
1613         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1614 }
1615
1616 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1617                               PrZoomFlags flags)
1618 {
1619         gint w, h;
1620         gdouble scale;
1621         gboolean force = !!(flags & PR_ZOOM_FORCE);
1622         gboolean new = !!(flags & PR_ZOOM_NEW);
1623
1624         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1625
1626         if (pr->zoom == zoom && !force) return FALSE;
1627
1628         w = pr->image_width;
1629         h = pr->image_height;
1630
1631         if (zoom == 0.0 && !pr->pixbuf)
1632                 {
1633                 scale = 1.0;
1634                 }
1635         else if (zoom == 0.0)
1636                 {
1637                 gint max_w;
1638                 gint max_h;
1639                 gboolean sizeable;
1640
1641                 sizeable = (new && pr_parent_window_sizable(pr));
1642
1643                 if (sizeable)
1644                         {
1645                         max_w = gdk_screen_width();
1646                         max_h = gdk_screen_height();
1647
1648                         if (pr->window_limit)
1649                                 {
1650                                 max_w = max_w * pr->window_limit_size / 100;
1651                                 max_h = max_h * pr->window_limit_size / 100;
1652                                 }
1653                         }
1654                 else
1655                         {
1656                         max_w = pr->viewport_width;
1657                         max_h = pr->viewport_height;
1658                         }
1659
1660                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1661                         {
1662                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1663                                 {
1664                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1665                                 h = max_h;
1666                                 w = w * scale + 0.5;
1667                                 if (w > max_w) w = max_w;
1668                                 }
1669                         else
1670                                 {
1671                                 scale = (gdouble)max_w / w;
1672                                 w = max_w;
1673                                 h = h * scale * pr->aspect_ratio + 0.5;
1674                                 if (h > max_h) h = max_h;
1675                                 }
1676
1677                         if (pr->autofit_limit)
1678                                 {
1679                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1680                                 w = w * factor + 0.5;
1681                                 h = h * factor + 0.5;
1682                                 scale = scale * factor;
1683                                 }
1684
1685                         if (pr->zoom_expand)
1686                                 {
1687                                 gdouble factor = (gdouble)pr->enlargement_limit_size / 100;
1688                                 if (scale > factor)
1689                                         {
1690                                         w = w * factor / scale;
1691                                         h = h * factor / scale;
1692                                         scale = factor;
1693                                         }
1694                                 }
1695
1696                         if (w < 1) w = 1;
1697                         if (h < 1) h = 1;
1698                         }
1699                 else
1700                         {
1701                         scale = 1.0;
1702                         }
1703                 }
1704         else if (zoom > 0.0) /* zoom orig, in */
1705                 {
1706                 scale = zoom;
1707                 w = w * scale;
1708                 h = h * scale * pr->aspect_ratio;
1709                 }
1710         else /* zoom out */
1711                 {
1712                 scale = 1.0 / (0.0 - zoom);
1713                 w = w * scale;
1714                 h = h * scale * pr->aspect_ratio;
1715                 }
1716
1717         pr->zoom = zoom;
1718         pr->width = w;
1719         pr->height = h;
1720         pr->scale = scale;
1721
1722         return TRUE;
1723 }
1724
1725 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1726                          PrZoomFlags flags, gint px, gint py)
1727 {
1728         gdouble old_scale;
1729         gint old_cx, old_cy;
1730         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1731         gboolean force = !!(flags & PR_ZOOM_FORCE);
1732         gboolean new = !!(flags & PR_ZOOM_NEW);
1733         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1734         PrZoomFlags clamp_flags = flags;
1735         gdouble old_center_x = pr->norm_center_x;
1736         gdouble old_center_y = pr->norm_center_y;
1737
1738         old_scale = pr->scale;
1739         if (center_point)
1740                 {
1741                 px = CLAMP(px, 0, pr->width);
1742                 py = CLAMP(py, 0, pr->height);
1743                 old_cx = pr->x_scroll + (px - pr->x_offset);
1744                 old_cy = pr->y_scroll + (py - pr->y_offset);
1745                 }
1746         else
1747                 {
1748                 px = py = 0;
1749                 old_cx = pr->x_scroll + pr->vis_width / 2;
1750                 old_cy = pr->y_scroll + pr->vis_height / 2;
1751                 }
1752
1753         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1754         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1755
1756         (void) pr_size_clamp(pr);
1757         (void) pr_parent_window_resize(pr, pr->width, pr->height);
1758
1759         if (force && new)
1760                 {
1761                 switch (pr->scroll_reset)
1762                         {
1763                         case PR_SCROLL_RESET_NOCHANGE:
1764                                 /* maintain old scroll position */
1765                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1766                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1767                                 break;
1768                         case PR_SCROLL_RESET_CENTER:
1769                                 /* center new image */
1770                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1771                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1772                                 break;
1773                         case PR_SCROLL_RESET_TOPLEFT:
1774                         default:
1775                                 /* reset to upper left */
1776                                 pr->x_scroll = 0;
1777                                 pr->y_scroll = 0;
1778                                 break;
1779                         }
1780                 }
1781         else
1782                 {
1783                 /* user zoom does not force, so keep visible center point */
1784                 if (center_point)
1785                         {
1786                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1787                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1788                         }
1789                 else
1790                         {
1791                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1792                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1793                         }
1794                 }
1795
1796         pr_scroll_clamp(pr);
1797
1798         pr->renderer->update_zoom(pr->renderer, lazy);
1799         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1800
1801         pr_scroll_notify_signal(pr);
1802         pr_zoom_signal(pr);
1803         pr_update_signal(pr);
1804 }
1805
1806 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1807 {
1808         gboolean zoom_changed = FALSE;
1809
1810         gint new_viewport_width = new_width;
1811         gint new_viewport_height = new_height;
1812
1813         if (!pr->stereo_temp_disable)
1814                 {
1815                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1816                         {
1817                         new_viewport_width = new_width / 2;
1818                         }
1819                 else if (pr->stereo_mode & PR_STEREO_VERT)
1820                         {
1821                         new_viewport_height = new_height / 2;
1822                         }
1823                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1824                         {
1825                         new_viewport_width = pr->stereo_fixed_width;
1826                         new_viewport_height = pr->stereo_fixed_height;
1827                         }
1828                 }
1829
1830         if (pr->window_width == new_width && pr->window_height == new_height &&
1831             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1832
1833         pr->window_width = new_width;
1834         pr->window_height = new_height;
1835         pr->viewport_width = new_viewport_width;
1836         pr->viewport_height = new_viewport_height;
1837
1838         if (pr->zoom == 0.0)
1839                 {
1840                 gdouble old_scale = pr->scale;
1841                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1842                 zoom_changed = (old_scale != pr->scale);
1843                 }
1844
1845         pr_size_clamp(pr);
1846         pr_scroll_clamp(pr);
1847
1848         if (zoom_changed)
1849                 {
1850                 pr->renderer->update_zoom(pr->renderer, FALSE);
1851                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1852                 }
1853
1854         pr->renderer->update_viewport(pr->renderer);
1855         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1856
1857
1858         /* ensure scroller remains visible */
1859         if (pr->scroller_overlay != -1)
1860                 {
1861                 gboolean update = FALSE;
1862
1863                 if (pr->scroller_x > new_width)
1864                         {
1865                         pr->scroller_x = new_width;
1866                         pr->scroller_xpos = new_width;
1867                         update = TRUE;
1868                         }
1869                 if (pr->scroller_y > new_height)
1870                         {
1871                         pr->scroller_y = new_height;
1872                         pr->scroller_ypos = new_height;
1873                         update = TRUE;
1874                         }
1875
1876                 if (update)
1877                         {
1878                         GdkPixbuf *pixbuf;
1879
1880                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1881                                 {
1882                                 gint w, h;
1883
1884                                 w = gdk_pixbuf_get_width(pixbuf);
1885                                 h = gdk_pixbuf_get_height(pixbuf);
1886                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1887                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1888                                 }
1889                         }
1890                 }
1891
1892         pr_scroll_notify_signal(pr);
1893         if (zoom_changed) pr_zoom_signal(pr);
1894         pr_update_signal(pr);
1895 }
1896
1897 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1898 {
1899         PixbufRenderer *pr = data;
1900
1901         pr_size_sync(pr, allocation->width, allocation->height);
1902 }
1903
1904 /*
1905  *-------------------------------------------------------------------
1906  * scrolling
1907  *-------------------------------------------------------------------
1908  */
1909
1910 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1911 {
1912         gint old_x, old_y;
1913         gint x_off, y_off;
1914
1915         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1916
1917         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1918
1919         old_x = pr->x_scroll;
1920         old_y = pr->y_scroll;
1921
1922         pr->x_scroll += x;
1923         pr->y_scroll += y;
1924
1925         pr_scroll_clamp(pr);
1926
1927         pixbuf_renderer_sync_scroll_center(pr);
1928
1929         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1930
1931         pr_scroll_notify_signal(pr);
1932
1933         x_off = pr->x_scroll - old_x;
1934         y_off = pr->y_scroll - old_y;
1935
1936         pr->renderer->scroll(pr->renderer, x_off, y_off);
1937         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1938 }
1939
1940 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1941                                      gdouble x_align, gdouble y_align)
1942 {
1943         gint px, py;
1944         gint ax, ay;
1945
1946         x_align = CLAMP(x_align, 0.0, 1.0);
1947         y_align = CLAMP(y_align, 0.0, 1.0);
1948
1949         ax = (gdouble)pr->vis_width * x_align;
1950         ay = (gdouble)pr->vis_height * y_align;
1951
1952         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1953         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1954
1955         pixbuf_renderer_scroll(pr, px, py);
1956 }
1957
1958 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1959
1960 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1961 {
1962         *x = pr->norm_center_x;
1963         *y = pr->norm_center_y;
1964 }
1965
1966 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1967 {
1968         gdouble dst_x, dst_y;
1969
1970         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1971         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1972
1973         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1974         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1975
1976         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1977 }
1978
1979 /*
1980  *-------------------------------------------------------------------
1981  * mouse
1982  *-------------------------------------------------------------------
1983  */
1984
1985 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventMotion *event, gpointer data)
1986 {
1987         PixbufRenderer *pr;
1988         gint accel;
1989 #if GTK_CHECK_VERSION(3,0,0)
1990         GdkDeviceManager *device_manager;
1991         GdkDevice *device;
1992 #endif
1993
1994         /* This is a hack, but work far the best, at least for single pointer systems.
1995          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
1996         gint x, y;
1997 #if GTK_CHECK_VERSION(3,0,0)
1998         device_manager = gdk_display_get_device_manager(gdk_window_get_display(event->window));
1999         device = gdk_device_manager_get_client_pointer(device_manager);
2000         gdk_window_get_device_position(event->window, device, &x, &y, NULL);
2001 #else
2002         gdk_window_get_pointer (event->window, &x, &y, NULL);
2003 #endif
2004         event->x = x;
2005         event->y = y;
2006
2007         pr = PIXBUF_RENDERER(widget);
2008
2009         if (pr->scroller_id)
2010                 {
2011                 pr->scroller_xpos = event->x;
2012                 pr->scroller_ypos = event->y;
2013                 }
2014
2015         pr->x_mouse = event->x;
2016         pr->y_mouse = event->y;
2017         pr_update_pixel_signal(pr);
2018
2019         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
2020
2021         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2022                 {
2023                 pr->drag_moved++;
2024                 }
2025         else
2026                 {
2027                 widget_set_cursor(widget, GDK_FLEUR);
2028                 }
2029
2030         if (event->state & GDK_CONTROL_MASK)
2031                 {
2032                 accel = PR_PAN_SHIFT_MULTIPLIER;
2033                 }
2034         else
2035                 {
2036                 accel = 1;
2037                 }
2038
2039         /* do the scroll */
2040         pixbuf_renderer_scroll(pr, (pr->drag_last_x - event->x) * accel,
2041                                (pr->drag_last_y - event->y) * accel);
2042
2043         pr_drag_signal(pr, event);
2044
2045         pr->drag_last_x = event->x;
2046         pr->drag_last_y = event->y;
2047
2048         /* This is recommended by the GTK+ documentation, but does not work properly.
2049          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2050          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2051          */
2052         /* gdk_event_request_motions (event); */
2053         return FALSE;
2054 }
2055
2056 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2057 {
2058         PixbufRenderer *pr;
2059
2060         pr = PIXBUF_RENDERER(widget);
2061         pr->x_mouse = -1;
2062         pr->y_mouse = -1;
2063
2064         pr_update_pixel_signal(pr);
2065         return FALSE;
2066 }
2067
2068 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2069 {
2070         PixbufRenderer *pr;
2071         GtkWidget *parent;
2072
2073         pr = PIXBUF_RENDERER(widget);
2074
2075         if (pr->scroller_id) return TRUE;
2076
2077         switch (bevent->button)
2078                 {
2079                 case MOUSE_BUTTON_LEFT:
2080                         pr->in_drag = TRUE;
2081                         pr->drag_last_x = bevent->x;
2082                         pr->drag_last_y = bevent->y;
2083                         pr->drag_moved = 0;
2084                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2085                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2086                                          NULL, NULL, bevent->time);
2087                         gtk_grab_add(widget);
2088                         break;
2089                 case MOUSE_BUTTON_MIDDLE:
2090                         pr->drag_moved = 0;
2091                         break;
2092                 case MOUSE_BUTTON_RIGHT:
2093                         pr_clicked_signal(pr, bevent);
2094                         break;
2095                 default:
2096                         break;
2097                 }
2098
2099         parent = gtk_widget_get_parent(widget);
2100         if (widget && gtk_widget_get_can_focus(parent))
2101                 {
2102                 gtk_widget_grab_focus(parent);
2103                 }
2104
2105         return FALSE;
2106 }
2107
2108 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2109 {
2110         PixbufRenderer *pr;
2111
2112         pr = PIXBUF_RENDERER(widget);
2113
2114         if (pr->scroller_id)
2115                 {
2116                 pr_scroller_stop(pr);
2117                 return TRUE;
2118                 }
2119
2120         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2121                 {
2122                 gtk_grab_remove(widget);
2123                 gdk_pointer_ungrab(bevent->time);
2124                 widget_set_cursor(widget, -1);
2125                 }
2126
2127         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2128                 {
2129                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2130                         {
2131                         pr_scroller_start(pr, bevent->x, bevent->y);
2132                         }
2133                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2134                         {
2135                         pr_clicked_signal(pr, bevent);
2136                         }
2137                 }
2138
2139         pr->in_drag = FALSE;
2140
2141         return FALSE;
2142 }
2143
2144 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2145 {
2146         PixbufRenderer *pr;
2147
2148         pr = PIXBUF_RENDERER(widget);
2149
2150         if (pr->scroller_id)
2151                 {
2152                 pr->scroller_xpos = pr->scroller_x;
2153                 pr->scroller_ypos = pr->scroller_y;
2154                 pr->scroller_xinc = 0;
2155                 pr->scroller_yinc = 0;
2156                 }
2157
2158         return FALSE;
2159 }
2160
2161 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2162 {
2163         PixbufRenderer *pr;
2164
2165         pr = PIXBUF_RENDERER(widget);
2166
2167         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2168 }
2169
2170 static void pr_signals_connect(PixbufRenderer *pr)
2171 {
2172         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2173                          G_CALLBACK(pr_mouse_motion_cb), pr);
2174         g_signal_connect(G_OBJECT(pr), "button_press_event",
2175                          G_CALLBACK(pr_mouse_press_cb), pr);
2176         g_signal_connect(G_OBJECT(pr), "button_release_event",
2177                          G_CALLBACK(pr_mouse_release_cb), pr);
2178         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2179                          G_CALLBACK(pr_mouse_leave_cb), pr);
2180         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2181                          G_CALLBACK(pr_leave_notify_cb), pr);
2182
2183         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2184                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
2185                                               GDK_LEAVE_NOTIFY_MASK);
2186
2187         g_signal_connect(G_OBJECT(pr), "drag_begin",
2188                          G_CALLBACK(pr_mouse_drag_cb), pr);
2189
2190 }
2191
2192 /*
2193  *-------------------------------------------------------------------
2194  * stereo support
2195  *-------------------------------------------------------------------
2196  */
2197
2198 #define COLOR_BYTES 3   /* rgb */
2199 #define RC 0            /* Red-Cyan */
2200 #define GM 1            /* Green-Magenta */
2201 #define YB 2            /* Yellow-Blue */
2202
2203 static void pr_create_anaglyph_color(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2204 {
2205         gint srs, drs;
2206         guchar *s_pix, *d_pix;
2207         guchar *sp, *dp;
2208         guchar *spi, *dpi;
2209         gint i, j;
2210
2211         srs = gdk_pixbuf_get_rowstride(right);
2212         s_pix = gdk_pixbuf_get_pixels(right);
2213         spi = s_pix + (x * COLOR_BYTES);
2214
2215         drs = gdk_pixbuf_get_rowstride(pixbuf);
2216         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2217         dpi =  d_pix + x * COLOR_BYTES;
2218
2219         for (i = y; i < y + h; i++)
2220                 {
2221                 sp = spi + (i * srs);
2222                 dp = dpi + (i * drs);
2223                 for (j = 0; j < w; j++)
2224                         {
2225                         switch(mode)
2226                                 {
2227                                 case RC:
2228                                         dp[0] = sp[0]; /* copy red channel */
2229                                         break;
2230                                 case GM:
2231                                         dp[1] = sp[1];
2232                                         break;
2233                                 case YB:
2234                                         dp[0] = sp[0];
2235                                         dp[1] = sp[1];
2236                                         break;
2237                                 }
2238                         sp += COLOR_BYTES;
2239                         dp += COLOR_BYTES;
2240                         }
2241                 }
2242 }
2243
2244 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2245 {
2246         gint srs, drs;
2247         guchar *s_pix, *d_pix;
2248         guchar *sp, *dp;
2249         guchar *spi, *dpi;
2250         gint i, j;
2251         const double gc[3] = {0.299, 0.587, 0.114};
2252
2253         srs = gdk_pixbuf_get_rowstride(right);
2254         s_pix = gdk_pixbuf_get_pixels(right);
2255         spi = s_pix + (x * COLOR_BYTES);
2256
2257         drs = gdk_pixbuf_get_rowstride(pixbuf);
2258         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2259         dpi =  d_pix + x * COLOR_BYTES;
2260
2261         for (i = y; i < y + h; i++)
2262                 {
2263                 sp = spi + (i * srs);
2264                 dp = dpi + (i * drs);
2265                 for (j = 0; j < w; j++)
2266                         {
2267                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2268                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2269                         switch(mode)
2270                                 {
2271                                 case RC:
2272                                         dp[0] = g2; /* red channel from sp */
2273                                         dp[1] = g1; /* green and blue from dp */
2274                                         dp[2] = g1;
2275                                         break;
2276                                 case GM:
2277                                         dp[0] = g1;
2278                                         dp[1] = g2;
2279                                         dp[2] = g1;
2280                                         break;
2281                                 case YB:
2282                                         dp[0] = g2;
2283                                         dp[1] = g2;
2284                                         dp[2] = g1;
2285                                         break;
2286                                 }
2287                         sp += COLOR_BYTES;
2288                         dp += COLOR_BYTES;
2289                         }
2290                 }
2291 }
2292
2293 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2294 {
2295         gint srs, drs;
2296         guchar *s_pix, *d_pix;
2297         guchar *sp, *dp;
2298         guchar *spi, *dpi;
2299         gint i, j, k;
2300         double pr_dubois_matrix[3][6];
2301         const static double pr_dubois_matrix_RC[3][6] = {
2302                 { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2303                 {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2304                 {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}};
2305         const static double pr_dubois_matrix_GM[3][6] = {
2306                 {-0.062, -0.158, -0.039,  0.529,  0.705,  0.024},
2307                 { 0.284,  0.668,  0.143, -0.016, -0.015, -0.065},
2308                 {-0.015, -0.027,  0.021,  0.009,  0.075,  0.937}};
2309         const static double pr_dubois_matrix_YB[3][6] = {
2310                 { 1.000, -0.193,  0.282, -0.015, -0.116, -0.016},
2311                 {-0.024,  0.855,  0.064,  0.006,  0.058, -0.016},
2312                 {-0.036, -0.163,  0.021,  0.089,  0.174,  0.858}};
2313
2314         switch(mode)
2315                 {
2316                 case RC:
2317                         memcpy(pr_dubois_matrix, pr_dubois_matrix_RC, sizeof pr_dubois_matrix);
2318                         break;
2319                 case GM:
2320                         memcpy(pr_dubois_matrix, pr_dubois_matrix_GM, sizeof pr_dubois_matrix);
2321                         break;
2322                 case YB:
2323                         memcpy(pr_dubois_matrix, pr_dubois_matrix_YB, sizeof pr_dubois_matrix);
2324                         break;
2325                 }
2326
2327         srs = gdk_pixbuf_get_rowstride(right);
2328         s_pix = gdk_pixbuf_get_pixels(right);
2329         spi = s_pix + (x * COLOR_BYTES);
2330
2331         drs = gdk_pixbuf_get_rowstride(pixbuf);
2332         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2333         dpi =  d_pix + x * COLOR_BYTES;
2334
2335         for (i = y; i < y + h; i++)
2336                 {
2337                 sp = spi + (i * srs);
2338                 dp = dpi + (i * drs);
2339                 for (j = 0; j < w; j++)
2340                         {
2341                         double res[3];
2342                         for (k = 0; k < 3; k++)
2343                                 {
2344                                 const double *m = pr_dubois_matrix[k];
2345                                 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];
2346                                 if (res[k] < 0.0) res[k] = 0;
2347                                 if (res[k] > 255.0) res[k] = 255.0;
2348                                 }
2349                         dp[0] = res[0];
2350                         dp[1] = res[1];
2351                         dp[2] = res[2];
2352                         sp += COLOR_BYTES;
2353                         dp += COLOR_BYTES;
2354                         }
2355                 }
2356 }
2357
2358 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2359 {
2360         if (mode & PR_STEREO_ANAGLYPH_RC)
2361                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, RC);
2362         else if (mode & PR_STEREO_ANAGLYPH_GM)
2363                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, GM);
2364         else if (mode & PR_STEREO_ANAGLYPH_YB)
2365                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, YB);
2366         else if (mode & PR_STEREO_ANAGLYPH_GRAY_RC)
2367                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, RC);
2368         else if (mode & PR_STEREO_ANAGLYPH_GRAY_GM)
2369                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, GM);
2370         else if (mode & PR_STEREO_ANAGLYPH_GRAY_YB)
2371                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, YB);
2372         else if (mode & PR_STEREO_ANAGLYPH_DB_RC)
2373                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, RC);
2374         else if (mode & PR_STEREO_ANAGLYPH_DB_GM)
2375                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, GM);
2376         else if (mode & PR_STEREO_ANAGLYPH_DB_YB)
2377                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, YB);
2378 }
2379
2380 /*
2381  *-------------------------------------------------------------------
2382  * public
2383  *-------------------------------------------------------------------
2384  */
2385 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2386 {
2387         pr->stereo_pixbuf_offset_left = 0;
2388         pr->stereo_pixbuf_offset_right = 0;
2389         if (!pr->pixbuf) return;
2390         switch (pr->orientation)
2391                 {
2392                 case EXIF_ORIENTATION_LEFT_TOP:
2393                 case EXIF_ORIENTATION_RIGHT_TOP:
2394                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2395                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2396                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2397                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2398                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2399                                 {
2400                                 pr->image_height /= 2;
2401                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2402                                 }
2403                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2404                                 {
2405                                 pr->image_height /= 2;
2406                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2407                                 }
2408
2409                         break;
2410                 default:
2411                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2412                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2413                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2414                                 {
2415                                 pr->image_width /= 2;
2416                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2417                                 }
2418                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2419                                 {
2420                                 pr->image_width /= 2;
2421                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2422                                 }
2423                 }
2424 }
2425
2426 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2427 {
2428         if (pixbuf) g_object_ref(pixbuf);
2429         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2430         pr->pixbuf = pixbuf;
2431
2432         if (!pr->pixbuf)
2433                 {
2434                 /* no pixbuf so just clear the window */
2435                 pr->image_width = 0;
2436                 pr->image_height = 0;
2437                 pr->scale = 1.0;
2438                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2439                                     and used for pixbuf_renderer_zoom_get */
2440
2441                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2442                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2443
2444                 pr_update_signal(pr);
2445
2446                 return;
2447                 }
2448
2449         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2450                 {
2451                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2452                 pr_stereo_temp_disable(pr, disable);
2453                 }
2454
2455         pr_pixbuf_size_sync(pr);
2456         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2457         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2458         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2459 }
2460
2461 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2462 {
2463         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2464
2465         pr_source_tile_unset(pr);
2466
2467         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2468
2469         pr_update_signal(pr);
2470 }
2471
2472 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2473 {
2474         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2475
2476         pr_source_tile_unset(pr);
2477
2478         pr->orientation = orientation;
2479         pr->stereo_data = stereo_data;
2480         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2481
2482         pr_update_signal(pr);
2483 }
2484
2485 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2486 {
2487         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2488
2489         return pr->pixbuf;
2490 }
2491
2492 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2493 {
2494         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2495
2496         pr->orientation = orientation;
2497
2498         pr_pixbuf_size_sync(pr);
2499         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2500 }
2501
2502 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2503 {
2504         if (!pr) return 1;
2505         return pr->orientation;
2506 }
2507
2508 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2509 {
2510         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2511         if (pr->stereo_data == stereo_data) return;
2512
2513
2514         pr->stereo_data = stereo_data;
2515
2516         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2517                 {
2518                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2519                 pr_stereo_temp_disable(pr, disable);
2520                 }
2521         pr_pixbuf_size_sync(pr);
2522         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2523         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2524         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2525 }
2526
2527 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2528 {
2529         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2530
2531         pr->func_post_process = func;
2532         pr->post_process_user_data = user_data;
2533         pr->post_process_slow = func && slow;
2534
2535 }
2536
2537
2538 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2539 {
2540         GObject *object;
2541         PixbufRendererScrollResetType scroll_reset;
2542
2543         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2544         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2545
2546         if (pr == source) return;
2547
2548         object = G_OBJECT(pr);
2549
2550         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2551         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2552         g_object_set(object, "loading", source->loading, NULL);
2553
2554         pr->complete = source->complete;
2555
2556         pr->x_scroll = source->x_scroll;
2557         pr->y_scroll = source->y_scroll;
2558         pr->x_mouse  = source->x_mouse;
2559         pr->y_mouse  = source->y_mouse;
2560
2561         scroll_reset = pr->scroll_reset;
2562         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2563
2564         pr->func_post_process = source->func_post_process;
2565         pr->post_process_user_data = source->post_process_user_data;
2566         pr->post_process_slow = source->post_process_slow;
2567         pr->orientation = source->orientation;
2568         pr->stereo_data = source->stereo_data;
2569
2570         if (source->source_tiles_enabled)
2571                 {
2572                 pr_source_tile_unset(pr);
2573
2574                 pr->source_tiles_enabled = source->source_tiles_enabled;
2575                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2576                 pr->source_tile_width = source->source_tile_width;
2577                 pr->source_tile_height = source->source_tile_height;
2578                 pr->image_width = source->image_width;
2579                 pr->image_height = source->image_height;
2580
2581                 pr->func_tile_request = source->func_tile_request;
2582                 pr->func_tile_dispose = source->func_tile_dispose;
2583                 pr->func_tile_data = source->func_tile_data;
2584
2585                 pr->source_tiles = source->source_tiles;
2586                 source->source_tiles = NULL;
2587
2588                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2589                 }
2590         else
2591                 {
2592                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2593                 }
2594
2595         pr->scroll_reset = scroll_reset;
2596
2597         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2598 }
2599
2600 void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
2601 {
2602         GObject *object;
2603         PixbufRendererScrollResetType scroll_reset;
2604
2605         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2606         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2607
2608         if (pr == source) return;
2609
2610         object = G_OBJECT(pr);
2611
2612         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2613         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2614         g_object_set(object, "loading", source->loading, NULL);
2615
2616         pr->complete = source->complete;
2617
2618         pr->x_scroll = source->x_scroll;
2619         pr->y_scroll = source->y_scroll;
2620         pr->x_mouse  = source->x_mouse;
2621         pr->y_mouse  = source->y_mouse;
2622
2623         scroll_reset = pr->scroll_reset;
2624         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2625
2626         pr->orientation = source->orientation;
2627         pr->stereo_data = source->stereo_data;
2628
2629         if (source->source_tiles_enabled)
2630                 {
2631                 pr->source_tiles_enabled = source->source_tiles_enabled;
2632                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2633                 pr->source_tile_width = source->source_tile_width;
2634                 pr->source_tile_height = source->source_tile_height;
2635                 pr->image_width = source->image_width;
2636                 pr->image_height = source->image_height;
2637
2638                 pr->func_tile_request = source->func_tile_request;
2639                 pr->func_tile_dispose = source->func_tile_dispose;
2640                 pr->func_tile_data = source->func_tile_data;
2641
2642                 pr->source_tiles = source->source_tiles;
2643                 source->source_tiles = NULL;
2644
2645                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2646                 }
2647         else
2648                 {
2649                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2650                 }
2651
2652         pr->scroll_reset = scroll_reset;
2653 }
2654
2655 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2656 {
2657         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2658
2659         if (pr->source_tiles_enabled)
2660                 {
2661                 pr_source_tile_changed(pr, x, y, w, h);
2662                 }
2663
2664         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2665         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2666 }
2667
2668 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2669 {
2670         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2671
2672         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2673 }
2674
2675 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2676 {
2677         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2678
2679         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2680 }
2681
2682 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2683 {
2684         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2685
2686         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2687 }
2688
2689 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2690 {
2691         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2692
2693         return pr->zoom;
2694 }
2695
2696 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2697 {
2698         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2699
2700         return pr->scale;
2701 }
2702
2703 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2704 {
2705         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2706
2707         if (min > 1.0 || max < 1.0) return;
2708         if (min < 1.0 && min > -1.0) return;
2709         if (min < -200.0 || max > 200.0) return;
2710
2711         if (pr->zoom_min != min)
2712                 {
2713                 pr->zoom_min = min;
2714                 g_object_notify(G_OBJECT(pr), "zoom_min");
2715                 }
2716         if (pr->zoom_max != max)
2717                 {
2718                 pr->zoom_max = max;
2719                 g_object_notify(G_OBJECT(pr), "zoom_max");
2720                 }
2721 }
2722
2723 static void pr_stereo_set(PixbufRenderer *pr)
2724 {
2725         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2726
2727         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2728
2729         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2730                 {
2731                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2732                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2733                 }
2734         else
2735                 {
2736                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2737                 pr->renderer2 = NULL;
2738                 }
2739         if (pr->stereo_mode & PR_STEREO_HALF)
2740                 {
2741                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2742                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2743                 else pr->aspect_ratio = 1.0;
2744                 }
2745         else
2746                 {
2747                 pr->aspect_ratio = 1.0;
2748                 }
2749 }
2750
2751 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2752 {
2753         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2754         pr->stereo_mode = stereo_mode;
2755         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2756
2757         pr->stereo_temp_disable = FALSE;
2758
2759         pr_stereo_set(pr);
2760
2761         if (redraw)
2762                 {
2763                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2764                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2765                 }
2766 }
2767
2768 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2769 {
2770         pr->stereo_fixed_width = width;
2771         pr->stereo_fixed_height = height;
2772         pr->stereo_fixed_x_left = x1;
2773         pr->stereo_fixed_y_left = y1;
2774         pr->stereo_fixed_x_right = x2;
2775         pr->stereo_fixed_y_right = y2;
2776 }
2777
2778 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2779 {
2780         return pr->stereo_mode;
2781 }
2782
2783 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2784 {
2785         if (pr->stereo_temp_disable == disable) return;
2786         pr->stereo_temp_disable = disable;
2787         if (disable)
2788                 {
2789                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2790                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2791                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2792                 pr->renderer2 = NULL;
2793                 pr->aspect_ratio = 1.0;
2794                 }
2795         else
2796                 {
2797                 pr_stereo_set(pr);
2798                 }
2799         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2800 }
2801
2802 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2803                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2804 {
2805         GdkPixbuf *pb = pr->pixbuf;
2806         gint p_alpha, prs;
2807         guchar *p_pix, *pp;
2808         gint map_x, map_y, map_w, map_h;
2809         size_t xoff, yoff;
2810
2811         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2812         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2813
2814         if (!pr->pixbuf && !pr->source_tiles_enabled)
2815                 {
2816                 *r_mouse = -1;
2817                 *g_mouse = -1;
2818                 *b_mouse = -1;
2819                 return FALSE;
2820                 }
2821
2822         if (!pb) return FALSE;
2823
2824         pr_tile_region_map_orientation(pr->orientation,
2825                                         x_pixel, y_pixel,
2826                                         pr->image_width, pr->image_height,
2827                                         1, 1, /*single pixel */
2828                                         &map_x, &map_y,
2829                                         &map_w, &map_h);
2830
2831         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2832         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2833
2834         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2835         prs = gdk_pixbuf_get_rowstride(pb);
2836         p_pix = gdk_pixbuf_get_pixels(pb);
2837
2838         xoff = (size_t)map_x * (p_alpha ? 4 : 3);
2839         yoff = (size_t)map_y * prs;
2840         pp = p_pix + yoff + xoff;
2841         *r_mouse = *pp;
2842         pp++;
2843         *g_mouse = *pp;
2844         pp++;
2845         *b_mouse = *pp;
2846
2847         return TRUE;
2848 }
2849
2850 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2851 {
2852         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2853
2854         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2855         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2856
2857         if (!pr->pixbuf && !pr->source_tiles_enabled)
2858                 {
2859                 *x_pixel_return = -1;
2860                 *y_pixel_return = -1;
2861                 return FALSE;
2862                 }
2863
2864         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2865         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2866         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2867         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2868
2869         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2870                 {
2871                 /* mouse is not on pr */
2872                 x_pixel = y_pixel = -1;
2873                 }
2874
2875         *x_pixel_return = x_pixel;
2876         *y_pixel_return = y_pixel;
2877
2878         return TRUE;
2879 }
2880
2881 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2882 {
2883         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2884         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2885
2886         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2887                 {
2888                 *width = 0;
2889                 *height = 0;
2890                 return FALSE;
2891                 }
2892
2893         *width = pr->image_width;
2894         *height = pr->image_height;
2895         return TRUE;
2896 }
2897
2898 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2899 {
2900         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2901         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2902
2903         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2904                 {
2905                 *width = 0;
2906                 *height = 0;
2907                 return FALSE;
2908                 }
2909
2910         *width = pr->width;
2911         *height = pr->height;
2912         return TRUE;
2913 }
2914
2915 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2916 {
2917         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2918         g_return_val_if_fail(rect != NULL, FALSE);
2919
2920         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2921             !pr->scale)
2922                 {
2923                 rect->x = 0;
2924                 rect->y = 0;
2925                 rect->width = 0;
2926                 rect->height = 0;
2927                 return FALSE;
2928                 }
2929
2930         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2931         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2932         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2933         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2934         return TRUE;
2935 }
2936
2937 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2938 {
2939         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2940         g_return_val_if_fail(rect != NULL, FALSE);
2941
2942         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2943                 {
2944                 rect->x = 0;
2945                 rect->y = 0;
2946                 rect->width = 0;
2947                 rect->height = 0;
2948                 return FALSE;
2949                 }
2950
2951         rect->x = pr->x_scroll;
2952         rect->y = pr->y_scroll;
2953         rect->width = pr->vis_width;
2954         rect->height = pr->vis_height;
2955         return TRUE;
2956 }
2957
2958 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2959 {
2960 #if 0
2961         /* FIXME: this function does not consider the image orientation,
2962         so it probably only breaks something */
2963         gdouble zoom;
2964         gint w, h;
2965
2966         zoom = pixbuf_renderer_zoom_get(pr);
2967         pr->image_width = width;
2968         pr->image_height = height;
2969
2970         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2971
2972         //w = width;
2973         //h = height;
2974
2975         //pr->width = width;
2976         //pr->height = height;
2977 #endif
2978 }
2979
2980 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */