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                 log_printf("Warning: 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         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 924
 925         if (color)
 926                 {
 927                 pr->color.red = color->red;
 928                 pr->color.green = color->green;
 929                 pr->color.blue = color->blue;
 930                 }
 931         else
 932                 {
 933                 pr->color.red = 0;
 934                 pr->color.green = 0;
 935                 pr->color.blue = 0;
 936                 }
 937
 938         pr->renderer->update_viewport(pr->renderer);
 939         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 940 }
 941
 942 /*
 943  *-------------------------------------------------------------------
 944  * source tiles
 945  *-------------------------------------------------------------------
 946  */
 947
 948 static void pr_source_tile_free(SourceTile *st)
 949 {
 950         if (!st) return;
 951
 952         if (st->pixbuf) g_object_unref(st->pixbuf);
 953         g_free(st);
 954 }
 955
 956 static void pr_source_tile_free_all(PixbufRenderer *pr)
 957 {
 958         GList *work;
 959
 960         work = pr->source_tiles;
 961         while (work)
 962                 {
 963                 SourceTile *st;
 964
 965                 st = work->data;
 966                 work = work->next;
 967
 968                 pr_source_tile_free(st);
 969                 }
 970
 971         g_list_free(pr->source_tiles);
 972         pr->source_tiles = NULL;
 973 }
 974
 975 static void pr_source_tile_unset(PixbufRenderer *pr)
 976 {
 977         pr_source_tile_free_all(pr);
 978         pr->source_tiles_enabled = FALSE;
 979 }
 980
 981 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 982 {
 983         gint x1, y1, x2, y2;
 984
 985         if (!st) return FALSE;
 986
 987 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 988 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 989 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 990 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 991         x1 = pr->x_scroll;
 992         y1 = pr->y_scroll;
 993         x2 = pr->x_scroll + pr->vis_width;
 994         y2 = pr->y_scroll + pr->vis_height;
 995
 996         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
 997                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
 998                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
 999                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
1000 }
1001
1002 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
1003 {
1004         SourceTile *st = NULL;
1005         gint count;
1006
1007         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
1008
1009         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
1010
1011         count = g_list_length(pr->source_tiles);
1012         if (count >= pr->source_tiles_cache_size)
1013                 {
1014                 GList *work;
1015
1016                 work = g_list_last(pr->source_tiles);
1017                 while (work && count >= pr->source_tiles_cache_size)
1018                         {
1019                         SourceTile *needle;
1020
1021                         needle = work->data;
1022                         work = work->prev;
1023
1024                         if (!pr_source_tile_visible(pr, needle))
1025                                 {
1026                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1027
1028                                 if (pr->func_tile_dispose)
1029                                         {
1030                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1031                                                               pr->source_tile_width, pr->source_tile_height,
1032                                                               needle->pixbuf, pr->func_tile_data);
1033                                         }
1034
1035                                 if (!st)
1036                                         {
1037                                         st = needle;
1038                                         }
1039                                 else
1040                                         {
1041                                         pr_source_tile_free(needle);
1042                                         }
1043
1044                                 count--;
1045                                 }
1046                         }
1047                 }
1048
1049         if (!st)
1050                 {
1051                 st = g_new0(SourceTile, 1);
1052                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1053                                             pr->source_tile_width, pr->source_tile_height);
1054                 }
1055
1056         st->x = ROUND_DOWN(x, pr->source_tile_width);
1057         st->y = ROUND_DOWN(y, pr->source_tile_height);
1058         st->blank = TRUE;
1059
1060         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1061
1062         return st;
1063 }
1064
1065 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1066 {
1067         SourceTile *st;
1068
1069         st = pr_source_tile_new(pr, x, y);
1070         if (!st) return NULL;
1071
1072         if (pr->func_tile_request &&
1073             pr->func_tile_request(pr, st->x, st->y,
1074                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1075                 {
1076                 st->blank = FALSE;
1077                 }
1078
1079         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1080                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1081         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1082                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1083         return st;
1084 }
1085
1086 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1087 {
1088         GList *work;
1089
1090         work = pr->source_tiles;
1091         while (work)
1092                 {
1093                 SourceTile *st = work->data;
1094
1095                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1096                     y >= st->y && y < st->y + pr->source_tile_height)
1097                         {
1098                         if (work != pr->source_tiles)
1099                                 {
1100                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1101                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1102                                 }
1103                         return st;
1104                         }
1105
1106                 work = work->next;
1107                 }
1108
1109         return NULL;
1110 }
1111
1112 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1113 {
1114         gint x1, y1;
1115         GList *list = NULL;
1116         gint sx, sy;
1117
1118         if (x < 0) x = 0;
1119         if (y < 0) y = 0;
1120         if (w > pr->image_width) w = pr->image_width;
1121         if (h > pr->image_height) h = pr->image_height;
1122
1123         sx = ROUND_DOWN(x, pr->source_tile_width);
1124         sy = ROUND_DOWN(y, pr->source_tile_height);
1125
1126         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1127                 {
1128                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1129                         {
1130                         SourceTile *st;
1131
1132                         st = pr_source_tile_find(pr, x1, y1);
1133                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1134
1135                         if (st) list = g_list_prepend(list, st);
1136                         }
1137                 }
1138
1139         return g_list_reverse(list);
1140 }
1141
1142 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1143 {
1144         GList *work;
1145
1146         if (width < 1 || height < 1) return;
1147
1148         work = pr->source_tiles;
1149         while (work)
1150                 {
1151                 SourceTile *st;
1152                 gint rx, ry, rw, rh;
1153
1154                 st = work->data;
1155                 work = work->next;
1156
1157                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1158                                    x, y, width, height,
1159                                    &rx, &ry, &rw, &rh))
1160                         {
1161                         GdkPixbuf *pixbuf;
1162
1163                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1164                         if (pr->func_tile_request &&
1165                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1166                                 {
1167                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1168                                                               rw * pr->scale, rh * pr->scale);
1169                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1170                                                                 rw * pr->scale, rh * pr->scale);
1171                                 }
1172                         g_object_unref(pixbuf);
1173                         }
1174                 }
1175 }
1176
1177 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1178                                gint tile_width, gint tile_height, gint cache_size,
1179                                PixbufRendererTileRequestFunc func_request,
1180                                PixbufRendererTileDisposeFunc func_dispose,
1181                                gpointer user_data,
1182                                gdouble zoom)
1183 {
1184         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1185         g_return_if_fail(tile_width >= 32 && tile_height >= 32);
1186         g_return_if_fail(width >= 32 && height > 32);
1187         g_return_if_fail(func_request != NULL);
1188
1189         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1190         pr->pixbuf = NULL;
1191
1192         pr_source_tile_unset(pr);
1193
1194         if (cache_size < 4) cache_size = 4;
1195
1196         pr->source_tiles_enabled = TRUE;
1197         pr->source_tiles_cache_size = cache_size;
1198         pr->source_tile_width = tile_width;
1199         pr->source_tile_height = tile_height;
1200
1201         pr->image_width = width;
1202         pr->image_height = height;
1203
1204         pr->func_tile_request = func_request;
1205         pr->func_tile_dispose = func_dispose;
1206         pr->func_tile_data = user_data;
1207
1208         pr_stereo_temp_disable(pr, TRUE);
1209         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1210 }
1211
1212 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1213 {
1214         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1215         g_return_if_fail(width >= 32 && height > 32);
1216
1217         if (!pr->source_tiles_enabled) return;
1218         if (pr->image_width == width && pr->image_height == height) return;
1219
1220         pr->image_width = width;
1221         pr->image_height = height;
1222
1223         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1224 }
1225
1226 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1227 {
1228         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1229
1230         return pr->source_tiles_enabled;
1231 }
1232
1233 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1234                                 PrZoomFlags flags, gint x, gint y)
1235 {
1236         gdouble zoom = pr->zoom;
1237
1238         if (increment == 0.0) return;
1239
1240         if (zoom == 0.0)
1241                 {
1242                 if (pr->scale < 1.0)
1243                         {
1244                         zoom = 0.0 - 1.0 / pr->scale;
1245                         }
1246                 else
1247                         {
1248                         zoom = pr->scale;
1249                         }
1250                 }
1251
1252         if (increment < 0.0)
1253                 {
1254                 if (zoom >= 1.0)
1255                         {
1256                         if (zoom / -(increment - 1.0) < 1.0)
1257                                 {
1258                                 zoom = 1.0 / (zoom / (increment - 1.0));
1259                                 }
1260                         else
1261                                 {
1262                                 zoom = zoom / -(increment - 1.0) ;
1263                                 }
1264                         }
1265                 else
1266                         {
1267                         zoom = zoom * -(increment - 1.0);
1268                         }
1269                 }
1270         else
1271                 {
1272                 if (zoom <= -1.0 )
1273                         {
1274                         if (zoom / (increment + 1.0) > -1.0)
1275                                 {
1276                                 zoom = -(1.0 / (zoom / (increment + 1.0)));
1277                                 }
1278                         else
1279                                 {
1280                                 zoom = zoom / (increment + 1.0) ;
1281                                 }
1282                         }
1283                 else
1284                         {
1285                         zoom = zoom * (increment + 1.0);
1286                         }
1287                 }
1288
1289         pr_zoom_sync(pr, zoom, flags, x, y);
1290 }
1291
1292
1293 /*
1294  *-------------------------------------------------------------------
1295  * signal emission
1296  *-------------------------------------------------------------------
1297  */
1298
1299 static void pr_update_signal(PixbufRenderer *pr)
1300 {
1301         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1302         pr->debug_updated = TRUE;
1303 }
1304
1305 static void pr_zoom_signal(PixbufRenderer *pr)
1306 {
1307         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1308 }
1309
1310 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1311 {
1312         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1313 }
1314
1315 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1316 {
1317         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1318 }
1319
1320 void pr_render_complete_signal(PixbufRenderer *pr)
1321 {
1322         if (!pr->complete)
1323                 {
1324                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1325                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1326                 }
1327         if (pr->debug_updated)
1328                 {
1329                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1330                 pr->debug_updated = FALSE;
1331                 }
1332 }
1333
1334 static void pr_drag_signal(PixbufRenderer *pr, GdkEventMotion *event)
1335 {
1336         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, event);
1337 }
1338
1339 static void pr_update_pixel_signal(PixbufRenderer *pr)
1340 {
1341         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1342 }
1343
1344 /*
1345  *-------------------------------------------------------------------
1346  * sync and clamp
1347  *-------------------------------------------------------------------
1348  */
1349
1350
1351 void pr_tile_coords_map_orientation(gint orientation,
1352                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1353                                      gdouble image_w, gdouble image_h,
1354                                      gdouble tile_w, gdouble tile_h,
1355                                      gdouble *res_x, gdouble *res_y)
1356 {
1357         *res_x = tile_x;
1358         *res_y = tile_y;
1359         switch (orientation)
1360                 {
1361                 case EXIF_ORIENTATION_TOP_LEFT:
1362                         /* normal -- nothing to do */
1363                         break;
1364                 case EXIF_ORIENTATION_TOP_RIGHT:
1365                         /* mirrored */
1366                         *res_x = image_w - tile_x - tile_w;
1367                         break;
1368                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1369                         /* upside down */
1370                         *res_x = image_w - tile_x - tile_w;
1371                         *res_y = image_h - tile_y - tile_h;
1372                         break;
1373                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1374                         /* flipped */
1375                         *res_y = image_h - tile_y - tile_h;
1376                         break;
1377                 case EXIF_ORIENTATION_LEFT_TOP:
1378                         *res_x = tile_y;
1379                         *res_y = tile_x;
1380                         break;
1381                 case EXIF_ORIENTATION_RIGHT_TOP:
1382                         /* rotated -90 (270) */
1383                         *res_x = tile_y;
1384                         *res_y = image_w - tile_x - tile_w;
1385                         break;
1386                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1387                         *res_x = image_h - tile_y - tile_h;
1388                         *res_y = image_w - tile_x - tile_w;
1389                         break;
1390                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1391                         /* rotated 90 */
1392                         *res_x = image_h - tile_y - tile_h;
1393                         *res_y = tile_x;
1394                         break;
1395                 default:
1396                         /* The other values are out of range */
1397                         break;
1398                 }
1399 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1400 }
1401
1402 void pr_tile_region_map_orientation(gint orientation,
1403                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1404                                      gint tile_w, gint tile_h,
1405                                      gint area_w, gint area_h,
1406                                      gint *res_x, gint *res_y,
1407                                      gint *res_w, gint *res_h)
1408 {
1409         *res_x = area_x;
1410         *res_y = area_y;
1411         *res_w = area_w;
1412         *res_h = area_h;
1413
1414         switch (orientation)
1415                 {
1416                 case EXIF_ORIENTATION_TOP_LEFT:
1417                         /* normal -- nothing to do */
1418                         break;
1419                 case EXIF_ORIENTATION_TOP_RIGHT:
1420                         /* mirrored */
1421                         *res_x = tile_w - area_x - area_w;
1422                         break;
1423                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1424                         /* upside down */
1425                         *res_x = tile_w - area_x - area_w;
1426                         *res_y = tile_h - area_y - area_h;
1427                         break;
1428                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1429                         /* flipped */
1430                         *res_y = tile_h - area_y - area_h;
1431                         break;
1432                 case EXIF_ORIENTATION_LEFT_TOP:
1433                         *res_x = area_y;
1434                         *res_y = area_x;
1435                         *res_w = area_h;
1436                         *res_h = area_w;
1437                         break;
1438                 case EXIF_ORIENTATION_RIGHT_TOP:
1439                         /* rotated -90 (270) */
1440                         *res_x = area_y;
1441                         *res_y = tile_w - area_x - area_w;
1442                         *res_w = area_h;
1443                         *res_h = area_w;
1444                         break;
1445                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1446                         *res_x = tile_h - area_y - area_h;
1447                         *res_y = tile_w - area_x - area_w;
1448                         *res_w = area_h;
1449                         *res_h = area_w;
1450                         break;
1451                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1452                         /* rotated 90 */
1453                         *res_x = tile_h - area_y - area_h;
1454                         *res_y = area_x;
1455                         *res_w = area_h;
1456                         *res_h = area_w;
1457                         break;
1458                 default:
1459                         /* The other values are out of range */
1460                         break;
1461                 }
1462 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1463 }
1464
1465 void pr_coords_map_orientation_reverse(gint orientation,
1466                                      gint area_x, gint area_y,
1467                                      gint tile_w, gint tile_h,
1468                                      gint area_w, gint area_h,
1469                                      gint *res_x, gint *res_y,
1470                                      gint *res_w, gint *res_h)
1471 {
1472         *res_x = area_x;
1473         *res_y = area_y;
1474         *res_w = area_w;
1475         *res_h = area_h;
1476
1477         switch (orientation)
1478                 {
1479                 case EXIF_ORIENTATION_TOP_LEFT:
1480                         /* normal -- nothing to do */
1481                         break;
1482                 case EXIF_ORIENTATION_TOP_RIGHT:
1483                         /* mirrored */
1484                         *res_x = tile_w - area_x - area_w;
1485                         break;
1486                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1487                         /* upside down */
1488                         *res_x = tile_w - area_x - area_w;
1489                         *res_y = tile_h - area_y - area_h;
1490                         break;
1491                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1492                         /* flipped */
1493                         *res_y = tile_h - area_y - area_h;
1494                         break;
1495                 case EXIF_ORIENTATION_LEFT_TOP:
1496                         *res_x = area_y;
1497                         *res_y = area_x;
1498                         *res_w = area_h;
1499                         *res_h = area_w;
1500                         break;
1501                 case EXIF_ORIENTATION_RIGHT_TOP:
1502                         /* rotated -90 (270) */
1503                         *res_x = tile_w - area_y - area_h;
1504                         *res_y = area_x;
1505                         *res_w = area_h;
1506                         *res_h = area_w;
1507                         break;
1508                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1509                         *res_x = tile_w - area_y - area_h;
1510                         *res_y = tile_h - area_x - area_w;
1511                         *res_w = area_h;
1512                         *res_h = area_w;
1513                         break;
1514                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1515                         /* rotated 90 */
1516                         *res_x = area_y;
1517                         *res_y = tile_h - area_x - area_w;
1518                         *res_w = area_h;
1519                         *res_h = area_w;
1520                         break;
1521                 default:
1522                         /* The other values are out of range */
1523                         break;
1524                 }
1525 }
1526
1527
1528
1529 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1530 {
1531         gint src_x, src_y;
1532         if (!pr->width || !pr->height) return;
1533
1534         /*
1535          * Update norm_center only if the image is bigger than the window.
1536          * With this condition the stored center survives also a temporary display
1537          * of the "broken image" icon.
1538         */
1539
1540         if (pr->width > pr->viewport_width)
1541                 {
1542                 src_x = pr->x_scroll + pr->vis_width / 2;
1543                 pr->norm_center_x = (gdouble)src_x / pr->width;
1544                 }
1545
1546         if (pr->height > pr->viewport_height)
1547                 {
1548                 src_y = pr->y_scroll + pr->vis_height / 2;
1549                 pr->norm_center_y = (gdouble)src_y / pr->height;
1550                 }
1551 }
1552
1553
1554 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1555 {
1556         gint old_xs;
1557         gint old_ys;
1558
1559         if (pr->zoom == 0.0)
1560                 {
1561                 pr->x_scroll = 0;
1562                 pr->y_scroll = 0;
1563
1564                 return FALSE;
1565                 }
1566
1567         old_xs = pr->x_scroll;
1568         old_ys = pr->y_scroll;
1569
1570         if (pr->x_offset > 0)
1571                 {
1572                 pr->x_scroll = 0;
1573                 }
1574         else
1575                 {
1576                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1577                 }
1578
1579         if (pr->y_offset > 0)
1580                 {
1581                 pr->y_scroll = 0;
1582                 }
1583         else
1584                 {
1585                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1586                 }
1587
1588         pixbuf_renderer_sync_scroll_center(pr);
1589
1590         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1591 }
1592
1593 static gboolean pr_size_clamp(PixbufRenderer *pr)
1594 {
1595         gint old_vw, old_vh;
1596
1597         old_vw = pr->vis_width;
1598         old_vh = pr->vis_height;
1599
1600         if (pr->width < pr->viewport_width)
1601                 {
1602                 pr->vis_width = pr->width;
1603                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1604                 }
1605         else
1606                 {
1607                 pr->vis_width = pr->viewport_width;
1608                 pr->x_offset = 0;
1609                 }
1610
1611         if (pr->height < pr->viewport_height)
1612                 {
1613                 pr->vis_height = pr->height;
1614                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1615                 }
1616         else
1617                 {
1618                 pr->vis_height = pr->viewport_height;
1619                 pr->y_offset = 0;
1620                 }
1621
1622         pixbuf_renderer_sync_scroll_center(pr);
1623
1624         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1625 }
1626
1627 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1628                               PrZoomFlags flags)
1629 {
1630         gint w, h;
1631         gdouble scale;
1632         gboolean force = !!(flags & PR_ZOOM_FORCE);
1633         gboolean new = !!(flags & PR_ZOOM_NEW);
1634
1635         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1636
1637         if (pr->zoom == zoom && !force) return FALSE;
1638
1639         w = pr->image_width;
1640         h = pr->image_height;
1641
1642         if (zoom == 0.0 && !pr->pixbuf)
1643                 {
1644                 scale = 1.0;
1645                 }
1646         else if (zoom == 0.0)
1647                 {
1648                 gint max_w;
1649                 gint max_h;
1650                 gboolean sizeable;
1651
1652                 sizeable = (new && pr_parent_window_sizable(pr));
1653
1654                 if (sizeable)
1655                         {
1656                         max_w = gdk_screen_width();
1657                         max_h = gdk_screen_height();
1658
1659                         if (pr->window_limit)
1660                                 {
1661                                 max_w = max_w * pr->window_limit_size / 100;
1662                                 max_h = max_h * pr->window_limit_size / 100;
1663                                 }
1664                         }
1665                 else
1666                         {
1667                         max_w = pr->viewport_width;
1668                         max_h = pr->viewport_height;
1669                         }
1670
1671                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1672                         {
1673                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1674                                 {
1675                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1676                                 h = max_h;
1677                                 w = w * scale + 0.5;
1678                                 if (w > max_w) w = max_w;
1679                                 }
1680                         else
1681                                 {
1682                                 scale = (gdouble)max_w / w;
1683                                 w = max_w;
1684                                 h = h * scale * pr->aspect_ratio + 0.5;
1685                                 if (h > max_h) h = max_h;
1686                                 }
1687
1688                         if (pr->autofit_limit)
1689                                 {
1690                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1691                                 w = w * factor + 0.5;
1692                                 h = h * factor + 0.5;
1693                                 scale = scale * factor;
1694                                 }
1695
1696                         if (pr->zoom_expand)
1697                                 {
1698                                 gdouble factor = (gdouble)pr->enlargement_limit_size / 100;
1699                                 if (scale > factor)
1700                                         {
1701                                         w = w * factor / scale;
1702                                         h = h * factor / scale;
1703                                         scale = factor;
1704                                         }
1705                                 }
1706
1707                         if (w < 1) w = 1;
1708                         if (h < 1) h = 1;
1709                         }
1710                 else
1711                         {
1712                         scale = 1.0;
1713                         }
1714                 }
1715         else if (zoom > 0.0) /* zoom orig, in */
1716                 {
1717                 scale = zoom;
1718                 w = w * scale;
1719                 h = h * scale * pr->aspect_ratio;
1720                 }
1721         else /* zoom out */
1722                 {
1723                 scale = 1.0 / (0.0 - zoom);
1724                 w = w * scale;
1725                 h = h * scale * pr->aspect_ratio;
1726                 }
1727
1728         pr->zoom = zoom;
1729         pr->width = w;
1730         pr->height = h;
1731         pr->scale = scale;
1732
1733         return TRUE;
1734 }
1735
1736 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1737                          PrZoomFlags flags, gint px, gint py)
1738 {
1739         gdouble old_scale;
1740         gint old_cx, old_cy;
1741         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1742         gboolean force = !!(flags & PR_ZOOM_FORCE);
1743         gboolean new = !!(flags & PR_ZOOM_NEW);
1744         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1745         PrZoomFlags clamp_flags = flags;
1746         gdouble old_center_x = pr->norm_center_x;
1747         gdouble old_center_y = pr->norm_center_y;
1748
1749         old_scale = pr->scale;
1750         if (center_point)
1751                 {
1752                 px = CLAMP(px, 0, pr->width);
1753                 py = CLAMP(py, 0, pr->height);
1754                 old_cx = pr->x_scroll + (px - pr->x_offset);
1755                 old_cy = pr->y_scroll + (py - pr->y_offset);
1756                 }
1757         else
1758                 {
1759                 px = py = 0;
1760                 old_cx = pr->x_scroll + pr->vis_width / 2;
1761                 old_cy = pr->y_scroll + pr->vis_height / 2;
1762                 }
1763
1764         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1765         (void) pr_parent_window_resize(pr, pr->width, pr->height);
1766         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1767
1768         (void) pr_size_clamp(pr);
1769
1770         if (force && new)
1771                 {
1772                 switch (pr->scroll_reset)
1773                         {
1774                         case PR_SCROLL_RESET_NOCHANGE:
1775                                 /* maintain old scroll position */
1776                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1777                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1778                                 break;
1779                         case PR_SCROLL_RESET_CENTER:
1780                                 /* center new image */
1781                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1782                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1783                                 break;
1784                         case PR_SCROLL_RESET_TOPLEFT:
1785                         default:
1786                                 /* reset to upper left */
1787                                 pr->x_scroll = 0;
1788                                 pr->y_scroll = 0;
1789                                 break;
1790                         }
1791                 }
1792         else
1793                 {
1794                 /* user zoom does not force, so keep visible center point */
1795                 if (center_point)
1796                         {
1797                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1798                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1799                         }
1800                 else
1801                         {
1802                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1803                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1804                         }
1805                 }
1806
1807         pr_scroll_clamp(pr);
1808
1809         pr->renderer->update_zoom(pr->renderer, lazy);
1810         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1811
1812         pr_scroll_notify_signal(pr);
1813         pr_zoom_signal(pr);
1814         pr_update_signal(pr);
1815 }
1816
1817 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1818 {
1819         gboolean zoom_changed = FALSE;
1820
1821         gint new_viewport_width = new_width;
1822         gint new_viewport_height = new_height;
1823
1824         if (!pr->stereo_temp_disable)
1825                 {
1826                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1827                         {
1828                         new_viewport_width = new_width / 2;
1829                         }
1830                 else if (pr->stereo_mode & PR_STEREO_VERT)
1831                         {
1832                         new_viewport_height = new_height / 2;
1833                         }
1834                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1835                         {
1836                         new_viewport_width = pr->stereo_fixed_width;
1837                         new_viewport_height = pr->stereo_fixed_height;
1838                         }
1839                 }
1840
1841         if (pr->window_width == new_width && pr->window_height == new_height &&
1842             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1843
1844         pr->window_width = new_width;
1845         pr->window_height = new_height;
1846         pr->viewport_width = new_viewport_width;
1847         pr->viewport_height = new_viewport_height;
1848
1849         if (pr->zoom == 0.0)
1850                 {
1851                 gdouble old_scale = pr->scale;
1852                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1853                 zoom_changed = (old_scale != pr->scale);
1854                 }
1855
1856         pr_size_clamp(pr);
1857         pr_scroll_clamp(pr);
1858
1859         if (zoom_changed)
1860                 {
1861                 pr->renderer->update_zoom(pr->renderer, FALSE);
1862                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1863                 }
1864
1865         pr->renderer->update_viewport(pr->renderer);
1866         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1867
1868
1869         /* ensure scroller remains visible */
1870         if (pr->scroller_overlay != -1)
1871                 {
1872                 gboolean update = FALSE;
1873
1874                 if (pr->scroller_x > new_width)
1875                         {
1876                         pr->scroller_x = new_width;
1877                         pr->scroller_xpos = new_width;
1878                         update = TRUE;
1879                         }
1880                 if (pr->scroller_y > new_height)
1881                         {
1882                         pr->scroller_y = new_height;
1883                         pr->scroller_ypos = new_height;
1884                         update = TRUE;
1885                         }
1886
1887                 if (update)
1888                         {
1889                         GdkPixbuf *pixbuf;
1890
1891                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1892                                 {
1893                                 gint w, h;
1894
1895                                 w = gdk_pixbuf_get_width(pixbuf);
1896                                 h = gdk_pixbuf_get_height(pixbuf);
1897                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1898                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1899                                 }
1900                         }
1901                 }
1902
1903         pr_scroll_notify_signal(pr);
1904         if (zoom_changed) pr_zoom_signal(pr);
1905         pr_update_signal(pr);
1906 }
1907
1908 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1909 {
1910         PixbufRenderer *pr = data;
1911
1912         pr_size_sync(pr, allocation->width, allocation->height);
1913 }
1914
1915 /*
1916  *-------------------------------------------------------------------
1917  * scrolling
1918  *-------------------------------------------------------------------
1919  */
1920
1921 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1922 {
1923         gint old_x, old_y;
1924         gint x_off, y_off;
1925
1926         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1927
1928         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1929
1930         old_x = pr->x_scroll;
1931         old_y = pr->y_scroll;
1932
1933         pr->x_scroll += x;
1934         pr->y_scroll += y;
1935
1936         pr_scroll_clamp(pr);
1937
1938         pixbuf_renderer_sync_scroll_center(pr);
1939
1940         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1941
1942         pr_scroll_notify_signal(pr);
1943
1944         x_off = pr->x_scroll - old_x;
1945         y_off = pr->y_scroll - old_y;
1946
1947         pr->renderer->scroll(pr->renderer, x_off, y_off);
1948         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1949 }
1950
1951 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1952                                      gdouble x_align, gdouble y_align)
1953 {
1954         gint px, py;
1955         gint ax, ay;
1956
1957         x_align = CLAMP(x_align, 0.0, 1.0);
1958         y_align = CLAMP(y_align, 0.0, 1.0);
1959
1960         ax = (gdouble)pr->vis_width * x_align;
1961         ay = (gdouble)pr->vis_height * y_align;
1962
1963         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1964         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1965
1966         pixbuf_renderer_scroll(pr, px, py);
1967 }
1968
1969 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1970
1971 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1972 {
1973         *x = pr->norm_center_x;
1974         *y = pr->norm_center_y;
1975 }
1976
1977 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1978 {
1979         gdouble dst_x, dst_y;
1980
1981         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1982         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1983
1984         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1985         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1986
1987         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1988 }
1989
1990 /*
1991  *-------------------------------------------------------------------
1992  * mouse
1993  *-------------------------------------------------------------------
1994  */
1995
1996 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventMotion *event, gpointer data)
1997 {
1998         PixbufRenderer *pr;
1999         gint accel;
2000 #if GTK_CHECK_VERSION(3,0,0)
2001         GdkDeviceManager *device_manager;
2002         GdkDevice *device;
2003 #endif
2004
2005         /* This is a hack, but work far the best, at least for single pointer systems.
2006          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
2007         gint x, y;
2008 #if GTK_CHECK_VERSION(3,0,0)
2009         device_manager = gdk_display_get_device_manager(gdk_window_get_display(event->window));
2010         device = gdk_device_manager_get_client_pointer(device_manager);
2011         gdk_window_get_device_position(event->window, device, &x, &y, NULL);
2012 #else
2013         gdk_window_get_pointer (event->window, &x, &y, NULL);
2014 #endif
2015         event->x = x;
2016         event->y = y;
2017
2018         pr = PIXBUF_RENDERER(widget);
2019
2020         if (pr->scroller_id)
2021                 {
2022                 pr->scroller_xpos = event->x;
2023                 pr->scroller_ypos = event->y;
2024                 }
2025
2026         pr->x_mouse = event->x;
2027         pr->y_mouse = event->y;
2028         pr_update_pixel_signal(pr);
2029
2030         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
2031
2032         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2033                 {
2034                 pr->drag_moved++;
2035                 }
2036         else
2037                 {
2038                 widget_set_cursor(widget, GDK_FLEUR);
2039                 }
2040
2041         if (event->state & GDK_CONTROL_MASK)
2042                 {
2043                 accel = PR_PAN_SHIFT_MULTIPLIER;
2044                 }
2045         else
2046                 {
2047                 accel = 1;
2048                 }
2049
2050         /* do the scroll - not when drawing rectangle*/
2051         if (!options->draw_rectangle)
2052                 {
2053                 pixbuf_renderer_scroll(pr, (pr->drag_last_x - event->x) * accel,
2054                                         (pr->drag_last_y - event->y) * accel);
2055                 }
2056         pr_drag_signal(pr, event);
2057
2058         pr->drag_last_x = event->x;
2059         pr->drag_last_y = event->y;
2060
2061         /* This is recommended by the GTK+ documentation, but does not work properly.
2062          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2063          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2064          */
2065         /* gdk_event_request_motions (event); */
2066         return FALSE;
2067 }
2068
2069 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2070 {
2071         PixbufRenderer *pr;
2072
2073         pr = PIXBUF_RENDERER(widget);
2074         pr->x_mouse = -1;
2075         pr->y_mouse = -1;
2076
2077         pr_update_pixel_signal(pr);
2078         return FALSE;
2079 }
2080
2081 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2082 {
2083         PixbufRenderer *pr;
2084         GtkWidget *parent;
2085
2086         pr = PIXBUF_RENDERER(widget);
2087
2088         if (pr->scroller_id) return TRUE;
2089
2090         switch (bevent->button)
2091                 {
2092                 case MOUSE_BUTTON_LEFT:
2093                         pr->in_drag = TRUE;
2094                         pr->drag_last_x = bevent->x;
2095                         pr->drag_last_y = bevent->y;
2096                         pr->drag_moved = 0;
2097                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2098                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2099                                          NULL, NULL, bevent->time);
2100                         gtk_grab_add(widget);
2101                         break;
2102                 case MOUSE_BUTTON_MIDDLE:
2103                         pr->drag_moved = 0;
2104                         break;
2105                 case MOUSE_BUTTON_RIGHT:
2106                         pr_clicked_signal(pr, bevent);
2107                         break;
2108                 default:
2109                         break;
2110                 }
2111
2112         parent = gtk_widget_get_parent(widget);
2113         if (widget && gtk_widget_get_can_focus(parent))
2114                 {
2115                 gtk_widget_grab_focus(parent);
2116                 }
2117
2118         return FALSE;
2119 }
2120
2121 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2122 {
2123         PixbufRenderer *pr;
2124
2125         pr = PIXBUF_RENDERER(widget);
2126
2127         if (pr->scroller_id)
2128                 {
2129                 pr_scroller_stop(pr);
2130                 return TRUE;
2131                 }
2132
2133         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2134                 {
2135                 gtk_grab_remove(widget);
2136                 gdk_pointer_ungrab(bevent->time);
2137                 widget_set_cursor(widget, -1);
2138                 }
2139
2140         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2141                 {
2142                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2143                         {
2144                         pr_scroller_start(pr, bevent->x, bevent->y);
2145                         }
2146                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE || bevent->button == MOUSE_BUTTON_BACK || bevent->button == MOUSE_BUTTON_FORWARD)
2147                         {
2148                         pr_clicked_signal(pr, bevent);
2149                         }
2150                 }
2151
2152         pr->in_drag = FALSE;
2153
2154         return FALSE;
2155 }
2156
2157 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2158 {
2159         PixbufRenderer *pr;
2160
2161         pr = PIXBUF_RENDERER(widget);
2162
2163         if (pr->scroller_id)
2164                 {
2165                 pr->scroller_xpos = pr->scroller_x;
2166                 pr->scroller_ypos = pr->scroller_y;
2167                 pr->scroller_xinc = 0;
2168                 pr->scroller_yinc = 0;
2169                 }
2170
2171         return FALSE;
2172 }
2173
2174 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2175 {
2176         PixbufRenderer *pr;
2177
2178         pr = PIXBUF_RENDERER(widget);
2179
2180         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2181 }
2182
2183 static void pr_signals_connect(PixbufRenderer *pr)
2184 {
2185         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2186                          G_CALLBACK(pr_mouse_motion_cb), pr);
2187         g_signal_connect(G_OBJECT(pr), "button_press_event",
2188                          G_CALLBACK(pr_mouse_press_cb), pr);
2189         g_signal_connect(G_OBJECT(pr), "button_release_event",
2190                          G_CALLBACK(pr_mouse_release_cb), pr);
2191         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2192                          G_CALLBACK(pr_mouse_leave_cb), pr);
2193         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2194                          G_CALLBACK(pr_leave_notify_cb), pr);
2195
2196         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2197                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
2198                                               GDK_LEAVE_NOTIFY_MASK);
2199
2200         g_signal_connect(G_OBJECT(pr), "drag_begin",
2201                          G_CALLBACK(pr_mouse_drag_cb), pr);
2202
2203 }
2204
2205 /*
2206  *-------------------------------------------------------------------
2207  * stereo support
2208  *-------------------------------------------------------------------
2209  */
2210
2211 #define COLOR_BYTES 3   /* rgb */
2212 #define RC 0            /* Red-Cyan */
2213 #define GM 1            /* Green-Magenta */
2214 #define YB 2            /* Yellow-Blue */
2215
2216 static void pr_create_anaglyph_color(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2217 {
2218         gint srs, drs;
2219         guchar *s_pix, *d_pix;
2220         guchar *sp, *dp;
2221         guchar *spi, *dpi;
2222         gint i, j;
2223
2224         srs = gdk_pixbuf_get_rowstride(right);
2225         s_pix = gdk_pixbuf_get_pixels(right);
2226         spi = s_pix + (x * COLOR_BYTES);
2227
2228         drs = gdk_pixbuf_get_rowstride(pixbuf);
2229         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2230         dpi =  d_pix + x * COLOR_BYTES;
2231
2232         for (i = y; i < y + h; i++)
2233                 {
2234                 sp = spi + (i * srs);
2235                 dp = dpi + (i * drs);
2236                 for (j = 0; j < w; j++)
2237                         {
2238                         switch(mode)
2239                                 {
2240                                 case RC:
2241                                         dp[0] = sp[0]; /* copy red channel */
2242                                         break;
2243                                 case GM:
2244                                         dp[1] = sp[1];
2245                                         break;
2246                                 case YB:
2247                                         dp[0] = sp[0];
2248                                         dp[1] = sp[1];
2249                                         break;
2250                                 }
2251                         sp += COLOR_BYTES;
2252                         dp += COLOR_BYTES;
2253                         }
2254                 }
2255 }
2256
2257 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2258 {
2259         gint srs, drs;
2260         guchar *s_pix, *d_pix;
2261         guchar *sp, *dp;
2262         guchar *spi, *dpi;
2263         gint i, j;
2264         const double gc[3] = {0.299, 0.587, 0.114};
2265
2266         srs = gdk_pixbuf_get_rowstride(right);
2267         s_pix = gdk_pixbuf_get_pixels(right);
2268         spi = s_pix + (x * COLOR_BYTES);
2269
2270         drs = gdk_pixbuf_get_rowstride(pixbuf);
2271         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2272         dpi =  d_pix + x * COLOR_BYTES;
2273
2274         for (i = y; i < y + h; i++)
2275                 {
2276                 sp = spi + (i * srs);
2277                 dp = dpi + (i * drs);
2278                 for (j = 0; j < w; j++)
2279                         {
2280                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2281                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2282                         switch(mode)
2283                                 {
2284                                 case RC:
2285                                         dp[0] = g2; /* red channel from sp */
2286                                         dp[1] = g1; /* green and blue from dp */
2287                                         dp[2] = g1;
2288                                         break;
2289                                 case GM:
2290                                         dp[0] = g1;
2291                                         dp[1] = g2;
2292                                         dp[2] = g1;
2293                                         break;
2294                                 case YB:
2295                                         dp[0] = g2;
2296                                         dp[1] = g2;
2297                                         dp[2] = g1;
2298                                         break;
2299                                 }
2300                         sp += COLOR_BYTES;
2301                         dp += COLOR_BYTES;
2302                         }
2303                 }
2304 }
2305
2306 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2307 {
2308         gint srs, drs;
2309         guchar *s_pix, *d_pix;
2310         guchar *sp, *dp;
2311         guchar *spi, *dpi;
2312         gint i, j, k;
2313         double pr_dubois_matrix[3][6];
2314         static const double pr_dubois_matrix_RC[3][6] = {
2315                 { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2316                 {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2317                 {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}};
2318         static const double pr_dubois_matrix_GM[3][6] = {
2319                 {-0.062, -0.158, -0.039,  0.529,  0.705,  0.024},
2320                 { 0.284,  0.668,  0.143, -0.016, -0.015, -0.065},
2321                 {-0.015, -0.027,  0.021,  0.009,  0.075,  0.937}};
2322         static const double pr_dubois_matrix_YB[3][6] = {
2323                 { 1.000, -0.193,  0.282, -0.015, -0.116, -0.016},
2324                 {-0.024,  0.855,  0.064,  0.006,  0.058, -0.016},
2325                 {-0.036, -0.163,  0.021,  0.089,  0.174,  0.858}};
2326
2327         switch(mode)
2328                 {
2329                 case RC:
2330                         memcpy(pr_dubois_matrix, pr_dubois_matrix_RC, sizeof pr_dubois_matrix);
2331                         break;
2332                 case GM:
2333                         memcpy(pr_dubois_matrix, pr_dubois_matrix_GM, sizeof pr_dubois_matrix);
2334                         break;
2335                 case YB:
2336                         memcpy(pr_dubois_matrix, pr_dubois_matrix_YB, sizeof pr_dubois_matrix);
2337                         break;
2338                 }
2339
2340         srs = gdk_pixbuf_get_rowstride(right);
2341         s_pix = gdk_pixbuf_get_pixels(right);
2342         spi = s_pix + (x * COLOR_BYTES);
2343
2344         drs = gdk_pixbuf_get_rowstride(pixbuf);
2345         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2346         dpi =  d_pix + x * COLOR_BYTES;
2347
2348         for (i = y; i < y + h; i++)
2349                 {
2350                 sp = spi + (i * srs);
2351                 dp = dpi + (i * drs);
2352                 for (j = 0; j < w; j++)
2353                         {
2354                         double res[3];
2355                         for (k = 0; k < 3; k++)
2356                                 {
2357                                 const double *m = pr_dubois_matrix[k];
2358                                 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];
2359                                 if (res[k] < 0.0) res[k] = 0;
2360                                 if (res[k] > 255.0) res[k] = 255.0;
2361                                 }
2362                         dp[0] = res[0];
2363                         dp[1] = res[1];
2364                         dp[2] = res[2];
2365                         sp += COLOR_BYTES;
2366                         dp += COLOR_BYTES;
2367                         }
2368                 }
2369 }
2370
2371 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2372 {
2373         if (mode & PR_STEREO_ANAGLYPH_RC)
2374                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, RC);
2375         else if (mode & PR_STEREO_ANAGLYPH_GM)
2376                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, GM);
2377         else if (mode & PR_STEREO_ANAGLYPH_YB)
2378                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, YB);
2379         else if (mode & PR_STEREO_ANAGLYPH_GRAY_RC)
2380                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, RC);
2381         else if (mode & PR_STEREO_ANAGLYPH_GRAY_GM)
2382                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, GM);
2383         else if (mode & PR_STEREO_ANAGLYPH_GRAY_YB)
2384                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, YB);
2385         else if (mode & PR_STEREO_ANAGLYPH_DB_RC)
2386                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, RC);
2387         else if (mode & PR_STEREO_ANAGLYPH_DB_GM)
2388                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, GM);
2389         else if (mode & PR_STEREO_ANAGLYPH_DB_YB)
2390                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, YB);
2391 }
2392
2393 /*
2394  *-------------------------------------------------------------------
2395  * public
2396  *-------------------------------------------------------------------
2397  */
2398 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2399 {
2400         pr->stereo_pixbuf_offset_left = 0;
2401         pr->stereo_pixbuf_offset_right = 0;
2402         if (!pr->pixbuf) return;
2403         switch (pr->orientation)
2404                 {
2405                 case EXIF_ORIENTATION_LEFT_TOP:
2406                 case EXIF_ORIENTATION_RIGHT_TOP:
2407                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2408                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2409                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2410                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2411                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2412                                 {
2413                                 pr->image_height /= 2;
2414                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2415                                 }
2416                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2417                                 {
2418                                 pr->image_height /= 2;
2419                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2420                                 }
2421
2422                         break;
2423                 default:
2424                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2425                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2426                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2427                                 {
2428                                 pr->image_width /= 2;
2429                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2430                                 }
2431                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2432                                 {
2433                                 pr->image_width /= 2;
2434                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2435                                 }
2436                 }
2437 }
2438
2439 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2440 {
2441         if (pixbuf) g_object_ref(pixbuf);
2442         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2443         pr->pixbuf = pixbuf;
2444
2445         if (!pr->pixbuf)
2446                 {
2447                 /* no pixbuf so just clear the window */
2448                 pr->image_width = 0;
2449                 pr->image_height = 0;
2450                 pr->scale = 1.0;
2451                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2452                                     and used for pixbuf_renderer_zoom_get */
2453
2454                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2455                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2456
2457                 pr_update_signal(pr);
2458
2459                 return;
2460                 }
2461
2462         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2463                 {
2464                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2465                 pr_stereo_temp_disable(pr, disable);
2466                 }
2467
2468         pr_pixbuf_size_sync(pr);
2469         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2470         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2471         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2472 }
2473
2474 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2475 {
2476         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2477
2478         pr_source_tile_unset(pr);
2479
2480         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2481
2482         pr_update_signal(pr);
2483 }
2484
2485 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2486 {
2487         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2488
2489         pr_source_tile_unset(pr);
2490
2491         pr->orientation = orientation;
2492         pr->stereo_data = stereo_data;
2493         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2494
2495         pr_update_signal(pr);
2496 }
2497
2498 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2499 {
2500         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2501
2502         return pr->pixbuf;
2503 }
2504
2505 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2506 {
2507         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2508
2509         pr->orientation = orientation;
2510
2511         pr_pixbuf_size_sync(pr);
2512         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2513 }
2514
2515 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2516 {
2517         if (!pr) return 1;
2518         return pr->orientation;
2519 }
2520
2521 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2522 {
2523         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2524         if (pr->stereo_data == stereo_data) return;
2525
2526
2527         pr->stereo_data = stereo_data;
2528
2529         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2530                 {
2531                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2532                 pr_stereo_temp_disable(pr, disable);
2533                 }
2534         pr_pixbuf_size_sync(pr);
2535         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2536         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2537         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2538 }
2539
2540 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2541 {
2542         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2543
2544         pr->func_post_process = func;
2545         pr->post_process_user_data = user_data;
2546         pr->post_process_slow = func && slow;
2547
2548 }
2549
2550
2551 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2552 {
2553         GObject *object;
2554         PixbufRendererScrollResetType scroll_reset;
2555
2556         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2557         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2558
2559         if (pr == source) return;
2560
2561         object = G_OBJECT(pr);
2562
2563         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2564         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2565         g_object_set(object, "loading", source->loading, NULL);
2566
2567         pr->complete = source->complete;
2568
2569         pr->x_scroll = source->x_scroll;
2570         pr->y_scroll = source->y_scroll;
2571         pr->x_mouse  = source->x_mouse;
2572         pr->y_mouse  = source->y_mouse;
2573
2574         scroll_reset = pr->scroll_reset;
2575         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2576
2577         pr->func_post_process = source->func_post_process;
2578         pr->post_process_user_data = source->post_process_user_data;
2579         pr->post_process_slow = source->post_process_slow;
2580         pr->orientation = source->orientation;
2581         pr->stereo_data = source->stereo_data;
2582
2583         if (source->source_tiles_enabled)
2584                 {
2585                 pr_source_tile_unset(pr);
2586
2587                 pr->source_tiles_enabled = source->source_tiles_enabled;
2588                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2589                 pr->source_tile_width = source->source_tile_width;
2590                 pr->source_tile_height = source->source_tile_height;
2591                 pr->image_width = source->image_width;
2592                 pr->image_height = source->image_height;
2593
2594                 pr->func_tile_request = source->func_tile_request;
2595                 pr->func_tile_dispose = source->func_tile_dispose;
2596                 pr->func_tile_data = source->func_tile_data;
2597
2598                 pr->source_tiles = source->source_tiles;
2599                 source->source_tiles = NULL;
2600
2601                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2602                 }
2603         else
2604                 {
2605                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2606                 }
2607
2608         pr->scroll_reset = scroll_reset;
2609
2610         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2611 }
2612
2613 void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
2614 {
2615         GObject *object;
2616         PixbufRendererScrollResetType scroll_reset;
2617
2618         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2619         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2620
2621         if (pr == source) return;
2622
2623         object = G_OBJECT(pr);
2624
2625         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2626         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2627         g_object_set(object, "loading", source->loading, NULL);
2628
2629         pr->complete = source->complete;
2630
2631         pr->x_scroll = source->x_scroll;
2632         pr->y_scroll = source->y_scroll;
2633         pr->x_mouse  = source->x_mouse;
2634         pr->y_mouse  = source->y_mouse;
2635
2636         scroll_reset = pr->scroll_reset;
2637         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2638
2639         pr->orientation = source->orientation;
2640         pr->stereo_data = source->stereo_data;
2641
2642         if (source->source_tiles_enabled)
2643                 {
2644                 pr->source_tiles_enabled = source->source_tiles_enabled;
2645                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2646                 pr->source_tile_width = source->source_tile_width;
2647                 pr->source_tile_height = source->source_tile_height;
2648                 pr->image_width = source->image_width;
2649                 pr->image_height = source->image_height;
2650
2651                 pr->func_tile_request = source->func_tile_request;
2652                 pr->func_tile_dispose = source->func_tile_dispose;
2653                 pr->func_tile_data = source->func_tile_data;
2654
2655                 pr->source_tiles = source->source_tiles;
2656                 source->source_tiles = NULL;
2657
2658                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2659                 }
2660         else
2661                 {
2662                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2663                 }
2664
2665         pr->scroll_reset = scroll_reset;
2666 }
2667
2668 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2669 {
2670         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2671
2672         if (pr->source_tiles_enabled)
2673                 {
2674                 pr_source_tile_changed(pr, x, y, w, h);
2675                 }
2676
2677         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2678         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2679 }
2680
2681 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2682 {
2683         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2684
2685         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2686 }
2687
2688 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2689 {
2690         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2691
2692         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2693 }
2694
2695 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2696 {
2697         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2698
2699         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2700 }
2701
2702 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2703 {
2704         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2705
2706         return pr->zoom;
2707 }
2708
2709 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2710 {
2711         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2712
2713         return pr->scale;
2714 }
2715
2716 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2717 {
2718         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2719
2720         if (min > 1.0 || max < 1.0) return;
2721         if (min < 1.0 && min > -1.0) return;
2722         if (min < -200.0 || max > 200.0) return;
2723
2724         if (pr->zoom_min != min)
2725                 {
2726                 pr->zoom_min = min;
2727                 g_object_notify(G_OBJECT(pr), "zoom_min");
2728                 }
2729         if (pr->zoom_max != max)
2730                 {
2731                 pr->zoom_max = max;
2732                 g_object_notify(G_OBJECT(pr), "zoom_max");
2733                 }
2734 }
2735
2736 static void pr_stereo_set(PixbufRenderer *pr)
2737 {
2738         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2739
2740         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2741
2742         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2743                 {
2744                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2745                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2746                 }
2747         else
2748                 {
2749                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2750                 pr->renderer2 = NULL;
2751                 }
2752         if (pr->stereo_mode & PR_STEREO_HALF)
2753                 {
2754                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2755                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2756                 else pr->aspect_ratio = 1.0;
2757                 }
2758         else
2759                 {
2760                 pr->aspect_ratio = 1.0;
2761                 }
2762 }
2763
2764 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2765 {
2766         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2767         pr->stereo_mode = stereo_mode;
2768         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2769
2770         pr->stereo_temp_disable = FALSE;
2771
2772         pr_stereo_set(pr);
2773
2774         if (redraw)
2775                 {
2776                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2777                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2778                 }
2779 }
2780
2781 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2782 {
2783         pr->stereo_fixed_width = width;
2784         pr->stereo_fixed_height = height;
2785         pr->stereo_fixed_x_left = x1;
2786         pr->stereo_fixed_y_left = y1;
2787         pr->stereo_fixed_x_right = x2;
2788         pr->stereo_fixed_y_right = y2;
2789 }
2790
2791 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2792 {
2793         return pr->stereo_mode;
2794 }
2795
2796 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2797 {
2798         if (pr->stereo_temp_disable == disable) return;
2799         pr->stereo_temp_disable = disable;
2800         if (disable)
2801                 {
2802                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2803                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2804                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2805                 pr->renderer2 = NULL;
2806                 pr->aspect_ratio = 1.0;
2807                 }
2808         else
2809                 {
2810                 pr_stereo_set(pr);
2811                 }
2812         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2813 }
2814
2815 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2816                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2817 {
2818         GdkPixbuf *pb = pr->pixbuf;
2819         gint p_alpha, prs;
2820         guchar *p_pix, *pp;
2821         gint map_x, map_y, map_w, map_h;
2822         size_t xoff, yoff;
2823
2824         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2825         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2826
2827         if (!pr->pixbuf && !pr->source_tiles_enabled)
2828                 {
2829                 *r_mouse = -1;
2830                 *g_mouse = -1;
2831                 *b_mouse = -1;
2832                 return FALSE;
2833                 }
2834
2835         if (!pb) return FALSE;
2836
2837         pr_tile_region_map_orientation(pr->orientation,
2838                                         x_pixel, y_pixel,
2839                                         pr->image_width, pr->image_height,
2840                                         1, 1, /*single pixel */
2841                                         &map_x, &map_y,
2842                                         &map_w, &map_h);
2843
2844         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2845         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2846
2847         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2848         prs = gdk_pixbuf_get_rowstride(pb);
2849         p_pix = gdk_pixbuf_get_pixels(pb);
2850
2851         xoff = (size_t)map_x * (p_alpha ? 4 : 3);
2852         yoff = (size_t)map_y * prs;
2853         pp = p_pix + yoff + xoff;
2854         *r_mouse = *pp;
2855         pp++;
2856         *g_mouse = *pp;
2857         pp++;
2858         *b_mouse = *pp;
2859
2860         return TRUE;
2861 }
2862
2863 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2864 {
2865         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2866
2867         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2868         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2869
2870         if (!pr->pixbuf && !pr->source_tiles_enabled)
2871                 {
2872                 *x_pixel_return = -1;
2873                 *y_pixel_return = -1;
2874                 return FALSE;
2875                 }
2876
2877         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2878         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2879         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2880         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2881
2882         if (x_pixel != x_pixel_clamped)
2883                 {
2884                 /* mouse is not on pr */
2885                 x_pixel = -1;
2886                 }
2887         if (y_pixel != y_pixel_clamped)
2888                 {
2889                 /* mouse is not on pr */
2890                 y_pixel = -1;
2891                 }
2892
2893         *x_pixel_return = x_pixel;
2894         *y_pixel_return = y_pixel;
2895
2896         return TRUE;
2897 }
2898
2899 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2900 {
2901         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2902         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2903
2904         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2905                 {
2906                 *width = 0;
2907                 *height = 0;
2908                 return FALSE;
2909                 }
2910
2911         *width = pr->image_width;
2912         *height = pr->image_height;
2913         return TRUE;
2914 }
2915
2916 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2917 {
2918         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2919         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2920
2921         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2922                 {
2923                 *width = 0;
2924                 *height = 0;
2925                 return FALSE;
2926                 }
2927
2928         *width = pr->width;
2929         *height = pr->height;
2930         return TRUE;
2931 }
2932
2933 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2934 {
2935         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2936         g_return_val_if_fail(rect != NULL, FALSE);
2937
2938         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2939             !pr->scale)
2940                 {
2941                 rect->x = 0;
2942                 rect->y = 0;
2943                 rect->width = 0;
2944                 rect->height = 0;
2945                 return FALSE;
2946                 }
2947
2948         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2949         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2950         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2951         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2952         return TRUE;
2953 }
2954
2955 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2956 {
2957         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2958         g_return_val_if_fail(rect != NULL, FALSE);
2959
2960         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2961                 {
2962                 rect->x = 0;
2963                 rect->y = 0;
2964                 rect->width = 0;
2965                 rect->height = 0;
2966                 return FALSE;
2967                 }
2968
2969         rect->x = pr->x_scroll;
2970         rect->y = pr->y_scroll;
2971         rect->width = pr->vis_width;
2972         rect->height = pr->vis_height;
2973         return TRUE;
2974 }
2975
2976 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2977 {
2978 #if 0
2979         /* FIXME: this function does not consider the image orientation,
2980         so it probably only breaks something */
2981         gdouble zoom;
2982         gint w, h;
2983
2984         zoom = pixbuf_renderer_zoom_get(pr);
2985         pr->image_width = width;
2986         pr->image_height = height;
2987
2988         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2989
2990         //w = width;
2991         //h = height;
2992
2993         //pr->width = width;
2994         //pr->height = height;
2995 #endif
2996 }
2997
2998 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */