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 };
 110
 111 typedef enum {
 112         PR_ZOOM_NONE            = 0,
 113         PR_ZOOM_FORCE           = 1 << 0,
 114         PR_ZOOM_NEW             = 1 << 1,
 115         PR_ZOOM_CENTER          = 1 << 2,
 116         PR_ZOOM_INVALIDATE      = 1 << 3,
 117         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 118 } PrZoomFlags;
 119
 120 static guint signals[SIGNAL_COUNT] = { 0 };
 121 static GtkEventBoxClass *parent_class = NULL;
 122
 123
 124
 125 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 126 static void pixbuf_renderer_init(PixbufRenderer *pr);
 127 static void pixbuf_renderer_finalize(GObject *object);
 128 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 129                                          const GValue *value, GParamSpec *pspec);
 130 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 131                                          GValue *value, GParamSpec *pspec);
 132 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 133
 134
 135 static void pr_source_tile_free_all(PixbufRenderer *pr);
 136
 137 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 138                          PrZoomFlags flags, gint px, gint py);
 139
 140 static void pr_signals_connect(PixbufRenderer *pr);
 141 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 142 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 143
 144
 145 /*
 146  *-------------------------------------------------------------------
 147  * Pixbuf Renderer object
 148  *-------------------------------------------------------------------
 149  */
 150
 151 GType pixbuf_renderer_get_type(void)
 152 {
 153         static GType pixbuf_renderer_type = 0;
 154
 155         if (!pixbuf_renderer_type)
 156                 {
 157                 static const GTypeInfo pixbuf_renderer_info =
 158                         {
 159                         sizeof(PixbufRendererClass), /* class_size */
 160                         NULL,           /* base_init */
 161                         NULL,           /* base_finalize */
 162                         (GClassInitFunc)pixbuf_renderer_class_init,
 163                         NULL,           /* class_finalize */
 164                         NULL,           /* class_data */
 165                         sizeof(PixbufRenderer), /* instance_size */
 166                         0,              /* n_preallocs */
 167                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 168                         NULL,           /* value_table */
 169                         };
 170
 171                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 172                                                               &pixbuf_renderer_info, 0);
 173                 }
 174
 175         return pixbuf_renderer_type;
 176 }
 177
 178 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 179 {
 180         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 181
 182         parent_class = g_type_class_peek_parent(class);
 183
 184         gobject_class->set_property = pixbuf_renderer_set_property;
 185         gobject_class->get_property = pixbuf_renderer_get_property;
 186
 187         gobject_class->finalize = pixbuf_renderer_finalize;
 188
 189         g_object_class_install_property(gobject_class,
 190                                         PROP_ZOOM_MIN,
 191                                         g_param_spec_double("zoom_min",
 192                                                             "Zoom minimum",
 193                                                             NULL,
 194                                                             -1000.0,
 195                                                             1000.0,
 196                                                             PR_ZOOM_MIN,
 197                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 198
 199         g_object_class_install_property(gobject_class,
 200                                         PROP_ZOOM_MAX,
 201                                         g_param_spec_double("zoom_max",
 202                                                             "Zoom maximum",
 203                                                             NULL,
 204                                                             -1000.0,
 205                                                             1000.0,
 206                                                             PR_ZOOM_MIN,
 207                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 208
 209         g_object_class_install_property(gobject_class,
 210                                         PROP_ZOOM_QUALITY,
 211                                         g_param_spec_uint("zoom_quality",
 212                                                           "Zoom quality",
 213                                                           NULL,
 214                                                           GDK_INTERP_NEAREST,
 215                                                           GDK_INTERP_HYPER,
 216                                                           GDK_INTERP_BILINEAR,
 217                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 218
 219         g_object_class_install_property(gobject_class,
 220                                         PROP_ZOOM_2PASS,
 221                                         g_param_spec_boolean("zoom_2pass",
 222                                                              "2 pass zoom",
 223                                                              NULL,
 224                                                              TRUE,
 225                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 226
 227         g_object_class_install_property(gobject_class,
 228                                         PROP_ZOOM_EXPAND,
 229                                         g_param_spec_boolean("zoom_expand",
 230                                                              "Expand image in autozoom.",
 231                                                              NULL,
 232                                                              FALSE,
 233                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 234         g_object_class_install_property(gobject_class,
 235                                         PROP_SCROLL_RESET,
 236                                         g_param_spec_uint("scroll_reset",
 237                                                           "New image scroll reset",
 238                                                           NULL,
 239                                                           PR_SCROLL_RESET_TOPLEFT,
 240                                                           PR_SCROLL_RESET_NOCHANGE,
 241                                                           PR_SCROLL_RESET_TOPLEFT,
 242                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 243
 244         g_object_class_install_property(gobject_class,
 245                                         PROP_DELAY_FLIP,
 246                                         g_param_spec_boolean("delay_flip",
 247                                                              "Delay image update",
 248                                                              NULL,
 249                                                              FALSE,
 250                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 251
 252         g_object_class_install_property(gobject_class,
 253                                         PROP_LOADING,
 254                                         g_param_spec_boolean("loading",
 255                                                              "Image actively loading",
 256                                                              NULL,
 257                                                              FALSE,
 258                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 259
 260         g_object_class_install_property(gobject_class,
 261                                         PROP_COMPLETE,
 262                                         g_param_spec_boolean("complete",
 263                                                              "Image rendering complete",
 264                                                              NULL,
 265                                                              FALSE,
 266                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 267
 268         g_object_class_install_property(gobject_class,
 269                                         PROP_CACHE_SIZE_DISPLAY,
 270                                         g_param_spec_uint("cache_display",
 271                                                           "Display cache size MB",
 272                                                           NULL,
 273                                                           0,
 274                                                           128,
 275                                                           PR_CACHE_SIZE_DEFAULT,
 276                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 277
 278         g_object_class_install_property(gobject_class,
 279                                         PROP_CACHE_SIZE_TILES,
 280                                         g_param_spec_uint("cache_tiles",
 281                                                           "Tile cache count",
 282                                                           "Number of tiles to retain in memory at any one time.",
 283                                                           0,
 284                                                           256,
 285                                                           PR_CACHE_SIZE_DEFAULT,
 286                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 287
 288         g_object_class_install_property(gobject_class,
 289                                         PROP_WINDOW_FIT,
 290                                         g_param_spec_boolean("window_fit",
 291                                                              "Fit window to image size",
 292                                                              NULL,
 293                                                              FALSE,
 294                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 295
 296         g_object_class_install_property(gobject_class,
 297                                         PROP_WINDOW_LIMIT,
 298                                         g_param_spec_boolean("window_limit",
 299                                                              "Limit size of parent window",
 300                                                              NULL,
 301                                                              FALSE,
 302                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 303
 304         g_object_class_install_property(gobject_class,
 305                                         PROP_WINDOW_LIMIT_VALUE,
 306                                         g_param_spec_uint("window_limit_value",
 307                                                           "Size limit of parent window",
 308                                                           NULL,
 309                                                           10,
 310                                                           150,
 311                                                           100,
 312                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 313
 314         g_object_class_install_property(gobject_class,
 315                                         PROP_AUTOFIT_LIMIT,
 316                                         g_param_spec_boolean("autofit_limit",
 317                                                              "Limit size of image when autofitting",
 318                                                              NULL,
 319                                                              FALSE,
 320                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 321
 322         g_object_class_install_property(gobject_class,
 323                                         PROP_AUTOFIT_LIMIT_VALUE,
 324                                         g_param_spec_uint("autofit_limit_value",
 325                                                           "Size limit of image when autofitting",
 326                                                           NULL,
 327                                                           10,
 328                                                           150,
 329                                                           100,
 330                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 331
 332
 333         signals[SIGNAL_ZOOM] =
 334                 g_signal_new("zoom",
 335                              G_OBJECT_CLASS_TYPE(gobject_class),
 336                              G_SIGNAL_RUN_LAST,
 337                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 338                              NULL, NULL,
 339                              g_cclosure_marshal_VOID__DOUBLE,
 340                              G_TYPE_NONE, 1,
 341                              G_TYPE_DOUBLE);
 342
 343         signals[SIGNAL_CLICKED] =
 344                 g_signal_new("clicked",
 345                              G_OBJECT_CLASS_TYPE(gobject_class),
 346                              G_SIGNAL_RUN_LAST,
 347                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 348                              NULL, NULL,
 349                              g_cclosure_marshal_VOID__BOXED,
 350                              G_TYPE_NONE, 1,
 351                              GDK_TYPE_EVENT);
 352
 353         signals[SIGNAL_SCROLL_NOTIFY] =
 354                 g_signal_new("scroll-notify",
 355                              G_OBJECT_CLASS_TYPE(gobject_class),
 356                              G_SIGNAL_RUN_LAST,
 357                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 358                              NULL, NULL,
 359                              g_cclosure_marshal_VOID__VOID,
 360                              G_TYPE_NONE, 0);
 361
 362         signals[SIGNAL_RENDER_COMPLETE] =
 363                 g_signal_new("render-complete",
 364                              G_OBJECT_CLASS_TYPE(gobject_class),
 365                              G_SIGNAL_RUN_LAST,
 366                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 367                              NULL, NULL,
 368                              g_cclosure_marshal_VOID__VOID,
 369                              G_TYPE_NONE, 0);
 370
 371         signals[SIGNAL_DRAG] =
 372                 g_signal_new("drag",
 373                              G_OBJECT_CLASS_TYPE(gobject_class),
 374                              G_SIGNAL_RUN_LAST,
 375                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 376                              NULL, NULL,
 377                              g_cclosure_marshal_VOID__BOXED,
 378                              G_TYPE_NONE, 1,
 379                              GDK_TYPE_EVENT);
 380
 381         signals[SIGNAL_UPDATE_PIXEL] =
 382                 g_signal_new("update-pixel",
 383                              G_OBJECT_CLASS_TYPE(gobject_class),
 384                              G_SIGNAL_RUN_LAST,
 385                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 386                              NULL, NULL,
 387                              g_cclosure_marshal_VOID__VOID,
 388                              G_TYPE_NONE, 0);
 389 }
 390
 391 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 392 {
 393         if (options->image.use_clutter_renderer)
 394                 {
 395 #ifdef HAVE_CLUTTER
 396                 return renderer_clutter_new(pr);
 397 #else
 398                 DEBUG_0("Geeqie is built without clutter renderer support");
 399 #endif
 400                 }
 401         return renderer_tiles_new(pr);
 402 }
 403
 404
 405 static void pixbuf_renderer_init(PixbufRenderer *pr)
 406 {
 407         GtkWidget *box;
 408
 409         box = GTK_WIDGET(pr);
 410
 411         pr->zoom_min = PR_ZOOM_MIN;
 412         pr->zoom_max = PR_ZOOM_MAX;
 413         pr->zoom_quality = GDK_INTERP_BILINEAR;
 414         pr->zoom_2pass = FALSE;
 415
 416         pr->zoom = 1.0;
 417         pr->scale = 1.0;
 418         pr->aspect_ratio = 1.0;
 419
 420         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 421
 422         pr->scroller_id = 0;
 423         pr->scroller_overlay = -1;
 424
 425         pr->x_mouse = -1;
 426         pr->y_mouse = -1;
 427
 428         pr->source_tiles_enabled = FALSE;
 429         pr->source_tiles = NULL;
 430
 431         pr->orientation = 1;
 432
 433         pr->norm_center_x = 0.5;
 434         pr->norm_center_y = 0.5;
 435
 436         pr->stereo_mode = PR_STEREO_NONE;
 437
 438         pr->color.red =0;
 439         pr->color.green =0;
 440         pr->color.blue =0;
 441
 442         pr->renderer = pr_backend_renderer_new(pr);
 443
 444         pr->renderer2 = NULL;
 445
 446         gtk_widget_set_double_buffered(box, FALSE);
 447         gtk_widget_set_app_paintable(box, TRUE);
 448         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 449                                G_CALLBACK(pr_size_cb), pr);
 450
 451         pr_signals_connect(pr);
 452 }
 453
 454 static void pixbuf_renderer_finalize(GObject *object)
 455 {
 456         PixbufRenderer *pr;
 457
 458         pr = PIXBUF_RENDERER(object);
 459
 460         pr->renderer->free(pr->renderer);
 461         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 462
 463
 464         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 465
 466         pr_scroller_timer_set(pr, FALSE);
 467
 468         pr_source_tile_free_all(pr);
 469 }
 470
 471 PixbufRenderer *pixbuf_renderer_new(void)
 472 {
 473         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 474 }
 475
 476 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 477                                          const GValue *value, GParamSpec *pspec)
 478 {
 479         PixbufRenderer *pr;
 480
 481         pr = PIXBUF_RENDERER(object);
 482
 483         switch (prop_id)
 484                 {
 485                 case PROP_ZOOM_MIN:
 486                         pr->zoom_min = g_value_get_double(value);
 487                         break;
 488                 case PROP_ZOOM_MAX:
 489                         pr->zoom_max = g_value_get_double(value);
 490                         break;
 491                 case PROP_ZOOM_QUALITY:
 492                         pr->zoom_quality = g_value_get_uint(value);
 493                         break;
 494                 case PROP_ZOOM_2PASS:
 495                         pr->zoom_2pass = g_value_get_boolean(value);
 496                         break;
 497                 case PROP_ZOOM_EXPAND:
 498                         pr->zoom_expand = g_value_get_boolean(value);
 499                         break;
 500                 case PROP_SCROLL_RESET:
 501                         pr->scroll_reset = g_value_get_uint(value);
 502                         break;
 503                 case PROP_DELAY_FLIP:
 504                         pr->delay_flip = g_value_get_boolean(value);
 505                         break;
 506                 case PROP_LOADING:
 507                         pr->loading = g_value_get_boolean(value);
 508                         break;
 509                 case PROP_COMPLETE:
 510                         pr->complete = g_value_get_boolean(value);
 511                         break;
 512                 case PROP_CACHE_SIZE_DISPLAY:
 513 //                      pr->tile_cache_max = g_value_get_uint(value);
 514                         break;
 515                 case PROP_CACHE_SIZE_TILES:
 516                         pr->source_tiles_cache_size = g_value_get_uint(value);
 517                         break;
 518                 case PROP_WINDOW_FIT:
 519                         pr->window_fit = g_value_get_boolean(value);
 520                         break;
 521                 case PROP_WINDOW_LIMIT:
 522                         pr->window_limit = g_value_get_boolean(value);
 523                         break;
 524                 case PROP_WINDOW_LIMIT_VALUE:
 525                         pr->window_limit_size = g_value_get_uint(value);
 526                         break;
 527                 case PROP_AUTOFIT_LIMIT:
 528                         pr->autofit_limit = g_value_get_boolean(value);
 529                         break;
 530                 case PROP_AUTOFIT_LIMIT_VALUE:
 531                         pr->autofit_limit_size = g_value_get_uint(value);
 532                         break;
 533                 default:
 534                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 535                         break;
 536                 }
 537 }
 538
 539 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 540                                          GValue *value, GParamSpec *pspec)
 541 {
 542         PixbufRenderer *pr;
 543
 544         pr = PIXBUF_RENDERER(object);
 545
 546         switch (prop_id)
 547                 {
 548                 case PROP_ZOOM_MIN:
 549                         g_value_set_double(value, pr->zoom_min);
 550                         break;
 551                 case PROP_ZOOM_MAX:
 552                         g_value_set_double(value, pr->zoom_max);
 553                         break;
 554                 case PROP_ZOOM_QUALITY:
 555                         g_value_set_uint(value, pr->zoom_quality);
 556                         break;
 557                 case PROP_ZOOM_2PASS:
 558                         g_value_set_boolean(value, pr->zoom_2pass);
 559                         break;
 560                 case PROP_ZOOM_EXPAND:
 561                         g_value_set_boolean(value, pr->zoom_expand);
 562                         break;
 563                 case PROP_SCROLL_RESET:
 564                         g_value_set_uint(value, pr->scroll_reset);
 565                         break;
 566                 case PROP_DELAY_FLIP:
 567                         g_value_set_boolean(value, pr->delay_flip);
 568                         break;
 569                 case PROP_LOADING:
 570                         g_value_set_boolean(value, pr->loading);
 571                         break;
 572                 case PROP_COMPLETE:
 573                         g_value_set_boolean(value, pr->complete);
 574                         break;
 575                 case PROP_CACHE_SIZE_DISPLAY:
 576 //                      g_value_set_uint(value, pr->tile_cache_max);
 577                         break;
 578                 case PROP_CACHE_SIZE_TILES:
 579                         g_value_set_uint(value, pr->source_tiles_cache_size);
 580                         break;
 581                 case PROP_WINDOW_FIT:
 582                         g_value_set_boolean(value, pr->window_fit);
 583                         break;
 584                 case PROP_WINDOW_LIMIT:
 585                         g_value_set_boolean(value, pr->window_limit);
 586                         break;
 587                 case PROP_WINDOW_LIMIT_VALUE:
 588                         g_value_set_uint(value, pr->window_limit_size);
 589                         break;
 590                 case PROP_AUTOFIT_LIMIT:
 591                         g_value_set_boolean(value, pr->autofit_limit);
 592                         break;
 593                 case PROP_AUTOFIT_LIMIT_VALUE:
 594                         g_value_set_uint(value, pr->autofit_limit_size);
 595                         break;
 596                 default:
 597                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 598                         break;
 599                 }
 600 }
 601
 602
 603 /*
 604  *-------------------------------------------------------------------
 605  * misc utilities
 606  *-------------------------------------------------------------------
 607  */
 608
 609 static void widget_set_cursor(GtkWidget *widget, gint icon)
 610 {
 611         GdkCursor *cursor;
 612
 613         if (!gtk_widget_get_window(widget)) return;
 614
 615         if (icon == -1)
 616                 {
 617                 cursor = NULL;
 618                 }
 619         else
 620                 {
 621                 cursor = gdk_cursor_new(icon);
 622                 }
 623
 624         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 625
 626         if (cursor) gdk_cursor_unref(cursor);
 627 }
 628
 629 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 630                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 631                                gint *rx, gint *ry, gint *rw, gint *rh)
 632 {
 633         if (clip_x + clip_w <= x ||
 634             clip_x >= x + w ||
 635             clip_y + clip_h <= y ||
 636             clip_y >= y + h)
 637                 {
 638                 return FALSE;
 639                 }
 640
 641         *rx = MAX(x, clip_x);
 642         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 643
 644         *ry = MAX(y, clip_y);
 645         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 646
 647         return TRUE;
 648 }
 649
 650 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 651 {
 652         GdkWindowState state;
 653
 654         if (!pr->parent_window) return FALSE;
 655         if (!pr->window_fit) return FALSE;
 656         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 657
 658         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 659         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 660         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 661
 662         return TRUE;
 663 }
 664
 665 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 666 {
 667         GtkWidget *widget;
 668         GtkWidget *parent;
 669         gint ww, wh;
 670         GtkAllocation widget_allocation;
 671         GtkAllocation parent_allocation;
 672
 673         if (!pr_parent_window_sizable(pr)) return FALSE;
 674
 675         if (pr->window_limit)
 676                 {
 677                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 678                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 679
 680                 if (w > sw) w = sw;
 681                 if (h > sh) h = sh;
 682                 }
 683
 684         widget = GTK_WIDGET(pr);
 685         parent = GTK_WIDGET(pr->parent_window);
 686
 687         gtk_widget_get_allocation(widget, &widget_allocation);
 688         gtk_widget_get_allocation(parent, &parent_allocation);
 689
 690         w += (parent_allocation.width - widget_allocation.width);
 691         h += (parent_allocation.height - widget_allocation.height);
 692
 693         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 694         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 695         if (w == ww && h == wh) return FALSE;
 696
 697         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 698
 699         return TRUE;
 700 }
 701
 702 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 703 {
 704         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 705         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 706
 707         pr->parent_window = GTK_WIDGET(window);
 708 }
 709
 710 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 711 {
 712         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 713
 714         return GTK_WINDOW(pr->parent_window);
 715 }
 716
 717
 718 /*
 719  *-------------------------------------------------------------------
 720  * overlays
 721  *-------------------------------------------------------------------
 722  */
 723
 724
 725 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 726                                  OverlayRendererFlags flags)
 727 {
 728         /* let's assume both renderers returns the same value */
 729         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 730         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 731 }
 732
 733 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 734 {
 735         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 736         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 737 }
 738
 739 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 740 {
 741         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 742         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 743 }
 744
 745 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 746 {
 747         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 748         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 749 }
 750
 751 /*
 752  *-------------------------------------------------------------------
 753  * scroller overlay
 754  *-------------------------------------------------------------------
 755  */
 756
 757
 758 static gboolean pr_scroller_update_cb(gpointer data)
 759 {
 760         PixbufRenderer *pr = data;
 761         gint x, y;
 762         gint xinc, yinc;
 763
 764         /* this was a simple scroll by difference between scroller and mouse position,
 765          * but all this math results in a smoother result and accounts for a dead zone.
 766          */
 767
 768         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 769                 {
 770                 x = 0;
 771                 }
 772         else
 773                 {
 774                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 775                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 776                 x += (x > 0) ? -shift : shift;
 777                 }
 778
 779         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 780                 {
 781                 y = 0;
 782                 }
 783         else
 784                 {
 785                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 786                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 787                 y += (y > 0) ? -shift : shift;
 788                 }
 789
 790         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 791                 {
 792                 xinc = x;
 793                 }
 794         else
 795                 {
 796                 xinc = pr->scroller_xinc;
 797
 798                 if (x >= 0)
 799                         {
 800                         if (xinc < 0) xinc = 0;
 801                         if (x < xinc) xinc = x;
 802                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 803                         }
 804                 else
 805                         {
 806                         if (xinc > 0) xinc = 0;
 807                         if (x > xinc) xinc = x;
 808                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 809                         }
 810                 }
 811
 812         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 813                 {
 814                 yinc = y;
 815                 }
 816         else
 817                 {
 818                 yinc = pr->scroller_yinc;
 819
 820                 if (y >= 0)
 821                         {
 822                         if (yinc < 0) yinc = 0;
 823                         if (y < yinc) yinc = y;
 824                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 825                         }
 826                 else
 827                         {
 828                         if (yinc > 0) yinc = 0;
 829                         if (y > yinc) yinc = y;
 830                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 831                         }
 832                 }
 833
 834         pr->scroller_xinc = xinc;
 835         pr->scroller_yinc = yinc;
 836
 837         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 838         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 839
 840         pixbuf_renderer_scroll(pr, xinc, yinc);
 841
 842         return TRUE;
 843 }
 844
 845 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 846 {
 847         if (pr->scroller_id)
 848                 {
 849                 g_source_remove(pr->scroller_id);
 850                 pr->scroller_id = 0;
 851                 }
 852
 853         if (start)
 854                 {
 855                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 856                                                 pr_scroller_update_cb, pr);
 857                 }
 858 }
 859
 860 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 861 {
 862         if (pr->scroller_overlay == -1)
 863                 {
 864                 GdkPixbuf *pixbuf;
 865                 gint w, h;
 866
 867 #ifdef GQ_BUILD
 868                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 869 #else
 870                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 871                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 872 #endif
 873                 w = gdk_pixbuf_get_width(pixbuf);
 874                 h = gdk_pixbuf_get_height(pixbuf);
 875
 876                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 877                 g_object_unref(pixbuf);
 878                 }
 879
 880         pr->scroller_x = x;
 881         pr->scroller_y = y;
 882         pr->scroller_xpos = x;
 883         pr->scroller_ypos = y;
 884
 885         pr_scroller_timer_set(pr, TRUE);
 886 }
 887
 888 static void pr_scroller_stop(PixbufRenderer *pr)
 889 {
 890         if (!pr->scroller_id) return;
 891
 892         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 893         pr->scroller_overlay = -1;
 894
 895         pr_scroller_timer_set(pr, FALSE);
 896 }
 897
 898 /*
 899  *-------------------------------------------------------------------
 900  * borders
 901  *-------------------------------------------------------------------
 902  */
 903
 904 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 905 {
 906         GtkStyle *style;
 907         GtkWidget *widget;
 908
 909         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 910
 911         if (color)
 912                 {
 913                 pr->color.red = color->red;
 914                 pr->color.green = color->green;
 915                 pr->color.blue = color->blue;
 916                 }
 917         else
 918                 {
 919                 pr->color.red = 0;
 920                 pr->color.green = 0;
 921                 pr->color.blue = 0;
 922                 }
 923
 924         pr->renderer->update_viewport(pr->renderer);
 925         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 926 }
 927
 928 /*
 929  *-------------------------------------------------------------------
 930  * source tiles
 931  *-------------------------------------------------------------------
 932  */
 933
 934 static void pr_source_tile_free(SourceTile *st)
 935 {
 936         if (!st) return;
 937
 938         if (st->pixbuf) g_object_unref(st->pixbuf);
 939         g_free(st);
 940 }
 941
 942 static void pr_source_tile_free_all(PixbufRenderer *pr)
 943 {
 944         GList *work;
 945
 946         work = pr->source_tiles;
 947         while (work)
 948                 {
 949                 SourceTile *st;
 950
 951                 st = work->data;
 952                 work = work->next;
 953
 954                 pr_source_tile_free(st);
 955                 }
 956
 957         g_list_free(pr->source_tiles);
 958         pr->source_tiles = NULL;
 959 }
 960
 961 static void pr_source_tile_unset(PixbufRenderer *pr)
 962 {
 963         pr_source_tile_free_all(pr);
 964         pr->source_tiles_enabled = FALSE;
 965 }
 966
 967 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 968 {
 969         gint x1, y1, x2, y2;
 970
 971         if (!st) return FALSE;
 972
 973 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 974 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 975 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 976 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 977         x1 = pr->x_scroll;
 978         y1 = pr->y_scroll;
 979         x2 = pr->x_scroll + pr->vis_width;
 980         y2 = pr->y_scroll + pr->vis_height;
 981
 982         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
 983                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
 984                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
 985                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
 986 }
 987
 988 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
 989 {
 990         SourceTile *st = NULL;
 991         gint count;
 992
 993         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
 994
 995         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
 996
 997         count = g_list_length(pr->source_tiles);
 998         if (count >= pr->source_tiles_cache_size)
 999                 {
1000                 GList *work;
1001
1002                 work = g_list_last(pr->source_tiles);
1003                 while (work && count >= pr->source_tiles_cache_size)
1004                         {
1005                         SourceTile *needle;
1006
1007                         needle = work->data;
1008                         work = work->prev;
1009
1010                         if (!pr_source_tile_visible(pr, needle))
1011                                 {
1012                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1013
1014                                 if (pr->func_tile_dispose)
1015                                         {
1016                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1017                                                               pr->source_tile_width, pr->source_tile_height,
1018                                                               needle->pixbuf, pr->func_tile_data);
1019                                         }
1020
1021                                 if (!st)
1022                                         {
1023                                         st = needle;
1024                                         }
1025                                 else
1026                                         {
1027                                         pr_source_tile_free(needle);
1028                                         }
1029
1030                                 count--;
1031                                 }
1032                         }
1033                 }
1034
1035         if (!st)
1036                 {
1037                 st = g_new0(SourceTile, 1);
1038                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1039                                             pr->source_tile_width, pr->source_tile_height);
1040                 }
1041
1042         st->x = ROUND_DOWN(x, pr->source_tile_width);
1043         st->y = ROUND_DOWN(y, pr->source_tile_height);
1044         st->blank = TRUE;
1045
1046         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1047
1048         return st;
1049 }
1050
1051 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1052 {
1053         SourceTile *st;
1054
1055         st = pr_source_tile_new(pr, x, y);
1056         if (!st) return NULL;
1057
1058         if (pr->func_tile_request &&
1059             pr->func_tile_request(pr, st->x, st->y,
1060                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1061                 {
1062                 st->blank = FALSE;
1063                 }
1064
1065         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1066                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1067         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1068                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1069         return st;
1070 }
1071
1072 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1073 {
1074         GList *work;
1075
1076         work = pr->source_tiles;
1077         while (work)
1078                 {
1079                 SourceTile *st = work->data;
1080
1081                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1082                     y >= st->y && y < st->y + pr->source_tile_height)
1083                         {
1084                         if (work != pr->source_tiles)
1085                                 {
1086                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1087                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1088                                 }
1089                         return st;
1090                         }
1091
1092                 work = work->next;
1093                 }
1094
1095         return NULL;
1096 }
1097
1098 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1099 {
1100         gint x1, y1;
1101         GList *list = NULL;
1102         gint sx, sy;
1103
1104         if (x < 0) x = 0;
1105         if (y < 0) y = 0;
1106         if (w > pr->image_width) w = pr->image_width;
1107         if (h > pr->image_height) h = pr->image_height;
1108
1109         sx = ROUND_DOWN(x, pr->source_tile_width);
1110         sy = ROUND_DOWN(y, pr->source_tile_height);
1111
1112         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1113                 {
1114                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1115                         {
1116                         SourceTile *st;
1117
1118                         st = pr_source_tile_find(pr, x1, y1);
1119                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1120
1121                         if (st) list = g_list_prepend(list, st);
1122                         }
1123                 }
1124
1125         return g_list_reverse(list);
1126 }
1127
1128 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1129 {
1130         GList *work;
1131
1132         if (width < 1 || height < 1) return;
1133
1134         work = pr->source_tiles;
1135         while (work)
1136                 {
1137                 SourceTile *st;
1138                 gint rx, ry, rw, rh;
1139
1140                 st = work->data;
1141                 work = work->next;
1142
1143                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1144                                    x, y, width, height,
1145                                    &rx, &ry, &rw, &rh))
1146                         {
1147                         GdkPixbuf *pixbuf;
1148
1149                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1150                         if (pr->func_tile_request &&
1151                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1152                                 {
1153                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1154                                                               rw * pr->scale, rh * pr->scale);
1155                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1156                                                                 rw * pr->scale, rh * pr->scale);
1157                                 }
1158                         g_object_unref(pixbuf);
1159                         }
1160                 }
1161 }
1162
1163 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1164                                gint tile_width, gint tile_height, gint cache_size,
1165                                PixbufRendererTileRequestFunc func_request,
1166                                PixbufRendererTileDisposeFunc func_dispose,
1167                                gpointer user_data,
1168                                gdouble zoom)
1169 {
1170         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1171         g_return_if_fail(tile_width >= 32 && tile_height >= 32);
1172         g_return_if_fail(width >= 32 && height > 32);
1173         g_return_if_fail(func_request != NULL);
1174
1175         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1176         pr->pixbuf = NULL;
1177
1178         pr_source_tile_unset(pr);
1179
1180         if (cache_size < 4) cache_size = 4;
1181
1182         pr->source_tiles_enabled = TRUE;
1183         pr->source_tiles_cache_size = cache_size;
1184         pr->source_tile_width = tile_width;
1185         pr->source_tile_height = tile_height;
1186
1187         pr->image_width = width;
1188         pr->image_height = height;
1189
1190         pr->func_tile_request = func_request;
1191         pr->func_tile_dispose = func_dispose;
1192         pr->func_tile_data = user_data;
1193
1194         pr_stereo_temp_disable(pr, TRUE);
1195         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1196 }
1197
1198 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1199 {
1200         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1201         g_return_if_fail(width >= 32 && height > 32);
1202
1203         if (!pr->source_tiles_enabled) return;
1204         if (pr->image_width == width && pr->image_height == height) return;
1205
1206         pr->image_width = width;
1207         pr->image_height = height;
1208
1209         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1210 }
1211
1212 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1213 {
1214         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1215
1216         return pr->source_tiles_enabled;
1217 }
1218
1219 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1220                                 PrZoomFlags flags, gint x, gint y)
1221 {
1222         gdouble zoom = pr->zoom;
1223
1224         if (increment == 0.0) return;
1225
1226         if (zoom == 0.0)
1227                 {
1228                 if (pr->scale < 1.0)
1229                         {
1230                         zoom = 0.0 - 1.0 / pr->scale;
1231                         }
1232                 else
1233                         {
1234                         zoom = pr->scale;
1235                         }
1236                 }
1237
1238         if (increment < 0.0)
1239                 {
1240                 if (zoom >= 1.0 && zoom + increment < 1.0)
1241                         {
1242                         zoom = zoom + increment - 2.0;
1243                         }
1244                 else
1245                         {
1246                         zoom = zoom + increment;
1247                         }
1248                 }
1249         else
1250                 {
1251                 if (zoom <= -1.0 && zoom + increment > -1.0)
1252                         {
1253                         zoom = zoom + increment + 2.0;
1254                         }
1255                 else
1256                         {
1257                         zoom = zoom + increment;
1258                         }
1259                 }
1260
1261         pr_zoom_sync(pr, zoom, flags, x, y);
1262 }
1263
1264
1265 /*
1266  *-------------------------------------------------------------------
1267  * signal emission
1268  *-------------------------------------------------------------------
1269  */
1270
1271 static void pr_update_signal(PixbufRenderer *pr)
1272 {
1273         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1274         pr->debug_updated = TRUE;
1275 }
1276
1277 static void pr_zoom_signal(PixbufRenderer *pr)
1278 {
1279         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1280 }
1281
1282 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1283 {
1284         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1285 }
1286
1287 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1288 {
1289         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1290 }
1291
1292 void pr_render_complete_signal(PixbufRenderer *pr)
1293 {
1294         if (!pr->complete)
1295                 {
1296                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1297                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1298                 }
1299         if (pr->debug_updated)
1300                 {
1301                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1302                 pr->debug_updated = FALSE;
1303                 }
1304 }
1305
1306 static void pr_drag_signal(PixbufRenderer *pr, GdkEventMotion *event)
1307 {
1308         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, event);
1309 }
1310
1311 static void pr_update_pixel_signal(PixbufRenderer *pr)
1312 {
1313         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1314 }
1315
1316 /*
1317  *-------------------------------------------------------------------
1318  * sync and clamp
1319  *-------------------------------------------------------------------
1320  */
1321
1322
1323 void pr_tile_coords_map_orientation(gint orientation,
1324                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1325                                      gdouble image_w, gdouble image_h,
1326                                      gdouble tile_w, gdouble tile_h,
1327                                      gdouble *res_x, gdouble *res_y)
1328 {
1329         *res_x = tile_x;
1330         *res_y = tile_y;
1331         switch (orientation)
1332                 {
1333                 case EXIF_ORIENTATION_TOP_LEFT:
1334                         /* normal -- nothing to do */
1335                         break;
1336                 case EXIF_ORIENTATION_TOP_RIGHT:
1337                         /* mirrored */
1338                         *res_x = image_w - tile_x - tile_w;
1339                         break;
1340                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1341                         /* upside down */
1342                         *res_x = image_w - tile_x - tile_w;
1343                         *res_y = image_h - tile_y - tile_h;
1344                         break;
1345                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1346                         /* flipped */
1347                         *res_y = image_h - tile_y - tile_h;
1348                         break;
1349                 case EXIF_ORIENTATION_LEFT_TOP:
1350                         *res_x = tile_y;
1351                         *res_y = tile_x;
1352                         break;
1353                 case EXIF_ORIENTATION_RIGHT_TOP:
1354                         /* rotated -90 (270) */
1355                         *res_x = tile_y;
1356                         *res_y = image_w - tile_x - tile_w;
1357                         break;
1358                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1359                         *res_x = image_h - tile_y - tile_h;
1360                         *res_y = image_w - tile_x - tile_w;
1361                         break;
1362                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1363                         /* rotated 90 */
1364                         *res_x = image_h - tile_y - tile_h;
1365                         *res_y = tile_x;
1366                         break;
1367                 default:
1368                         /* The other values are out of range */
1369                         break;
1370                 }
1371 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1372 }
1373
1374 void pr_tile_region_map_orientation(gint orientation,
1375                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1376                                      gint tile_w, gint tile_h,
1377                                      gint area_w, gint area_h,
1378                                      gint *res_x, gint *res_y,
1379                                      gint *res_w, gint *res_h)
1380 {
1381         *res_x = area_x;
1382         *res_y = area_y;
1383         *res_w = area_w;
1384         *res_h = area_h;
1385
1386         switch (orientation)
1387                 {
1388                 case EXIF_ORIENTATION_TOP_LEFT:
1389                         /* normal -- nothing to do */
1390                         break;
1391                 case EXIF_ORIENTATION_TOP_RIGHT:
1392                         /* mirrored */
1393                         *res_x = tile_w - area_x - area_w;
1394                         break;
1395                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1396                         /* upside down */
1397                         *res_x = tile_w - area_x - area_w;
1398                         *res_y = tile_h - area_y - area_h;
1399                         break;
1400                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1401                         /* flipped */
1402                         *res_y = tile_h - area_y - area_h;
1403                         break;
1404                 case EXIF_ORIENTATION_LEFT_TOP:
1405                         *res_x = area_y;
1406                         *res_y = area_x;
1407                         *res_w = area_h;
1408                         *res_h = area_w;
1409                         break;
1410                 case EXIF_ORIENTATION_RIGHT_TOP:
1411                         /* rotated -90 (270) */
1412                         *res_x = area_y;
1413                         *res_y = tile_w - area_x - area_w;
1414                         *res_w = area_h;
1415                         *res_h = area_w;
1416                         break;
1417                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1418                         *res_x = tile_h - area_y - area_h;
1419                         *res_y = tile_w - area_x - area_w;
1420                         *res_w = area_h;
1421                         *res_h = area_w;
1422                         break;
1423                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1424                         /* rotated 90 */
1425                         *res_x = tile_h - area_y - area_h;
1426                         *res_y = area_x;
1427                         *res_w = area_h;
1428                         *res_h = area_w;
1429                         break;
1430                 default:
1431                         /* The other values are out of range */
1432                         break;
1433                 }
1434 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1435 }
1436
1437 void pr_coords_map_orientation_reverse(gint orientation,
1438                                      gint area_x, gint area_y,
1439                                      gint tile_w, gint tile_h,
1440                                      gint area_w, gint area_h,
1441                                      gint *res_x, gint *res_y,
1442                                      gint *res_w, gint *res_h)
1443 {
1444         *res_x = area_x;
1445         *res_y = area_y;
1446         *res_w = area_w;
1447         *res_h = area_h;
1448
1449         switch (orientation)
1450                 {
1451                 case EXIF_ORIENTATION_TOP_LEFT:
1452                         /* normal -- nothing to do */
1453                         break;
1454                 case EXIF_ORIENTATION_TOP_RIGHT:
1455                         /* mirrored */
1456                         *res_x = tile_w - area_x - area_w;
1457                         break;
1458                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1459                         /* upside down */
1460                         *res_x = tile_w - area_x - area_w;
1461                         *res_y = tile_h - area_y - area_h;
1462                         break;
1463                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1464                         /* flipped */
1465                         *res_y = tile_h - area_y - area_h;
1466                         break;
1467                 case EXIF_ORIENTATION_LEFT_TOP:
1468                         *res_x = area_y;
1469                         *res_y = area_x;
1470                         *res_w = area_h;
1471                         *res_h = area_w;
1472                         break;
1473                 case EXIF_ORIENTATION_RIGHT_TOP:
1474                         /* rotated -90 (270) */
1475                         *res_x = tile_w - area_y - area_h;
1476                         *res_y = area_x;
1477                         *res_w = area_h;
1478                         *res_h = area_w;
1479                         break;
1480                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1481                         *res_x = tile_w - area_y - area_h;
1482                         *res_y = tile_h - area_x - area_w;
1483                         *res_w = area_h;
1484                         *res_h = area_w;
1485                         break;
1486                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1487                         /* rotated 90 */
1488                         *res_x = area_y;
1489                         *res_y = tile_h - area_x - area_w;
1490                         *res_w = area_h;
1491                         *res_h = area_w;
1492                         break;
1493                 default:
1494                         /* The other values are out of range */
1495                         break;
1496                 }
1497 }
1498
1499
1500
1501 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1502 {
1503         gint src_x, src_y;
1504         if (!pr->width || !pr->height) return;
1505
1506         /*
1507          * Update norm_center only if the image is bigger than the window.
1508          * With this condition the stored center survives also a temporary display
1509          * of the "broken image" icon.
1510         */
1511
1512         if (pr->width > pr->viewport_width)
1513                 {
1514                 src_x = pr->x_scroll + pr->vis_width / 2;
1515                 pr->norm_center_x = (gdouble)src_x / pr->width;
1516                 }
1517
1518         if (pr->height > pr->viewport_height)
1519                 {
1520                 src_y = pr->y_scroll + pr->vis_height / 2;
1521                 pr->norm_center_y = (gdouble)src_y / pr->height;
1522                 }
1523 }
1524
1525
1526 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1527 {
1528         gint old_xs;
1529         gint old_ys;
1530
1531         if (pr->zoom == 0.0)
1532                 {
1533                 pr->x_scroll = 0;
1534                 pr->y_scroll = 0;
1535
1536                 return FALSE;
1537                 }
1538
1539         old_xs = pr->x_scroll;
1540         old_ys = pr->y_scroll;
1541
1542         if (pr->x_offset > 0)
1543                 {
1544                 pr->x_scroll = 0;
1545                 }
1546         else
1547                 {
1548                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1549                 }
1550
1551         if (pr->y_offset > 0)
1552                 {
1553                 pr->y_scroll = 0;
1554                 }
1555         else
1556                 {
1557                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1558                 }
1559
1560         pixbuf_renderer_sync_scroll_center(pr);
1561
1562         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1563 }
1564
1565 static gboolean pr_size_clamp(PixbufRenderer *pr)
1566 {
1567         gint old_vw, old_vh;
1568
1569         old_vw = pr->vis_width;
1570         old_vh = pr->vis_height;
1571
1572         if (pr->width < pr->viewport_width)
1573                 {
1574                 pr->vis_width = pr->width;
1575                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1576                 }
1577         else
1578                 {
1579                 pr->vis_width = pr->viewport_width;
1580                 pr->x_offset = 0;
1581                 }
1582
1583         if (pr->height < pr->viewport_height)
1584                 {
1585                 pr->vis_height = pr->height;
1586                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1587                 }
1588         else
1589                 {
1590                 pr->vis_height = pr->viewport_height;
1591                 pr->y_offset = 0;
1592                 }
1593
1594         pixbuf_renderer_sync_scroll_center(pr);
1595
1596         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1597 }
1598
1599 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1600                               PrZoomFlags flags)
1601 {
1602         gint w, h;
1603         gdouble scale;
1604         gboolean force = !!(flags & PR_ZOOM_FORCE);
1605         gboolean new = !!(flags & PR_ZOOM_NEW);
1606
1607         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1608
1609         if (pr->zoom == zoom && !force) return FALSE;
1610
1611         w = pr->image_width;
1612         h = pr->image_height;
1613
1614         if (zoom == 0.0 && !pr->pixbuf)
1615                 {
1616                 scale = 1.0;
1617                 }
1618         else if (zoom == 0.0)
1619                 {
1620                 gint max_w;
1621                 gint max_h;
1622                 gboolean sizeable;
1623
1624                 sizeable = (new && pr_parent_window_sizable(pr));
1625
1626                 if (sizeable)
1627                         {
1628                         max_w = gdk_screen_width();
1629                         max_h = gdk_screen_height();
1630
1631                         if (pr->window_limit)
1632                                 {
1633                                 max_w = max_w * pr->window_limit_size / 100;
1634                                 max_h = max_h * pr->window_limit_size / 100;
1635                                 }
1636                         }
1637                 else
1638                         {
1639                         max_w = pr->viewport_width;
1640                         max_h = pr->viewport_height;
1641                         }
1642
1643                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1644                         {
1645                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1646                                 {
1647                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1648                                 h = max_h;
1649                                 w = w * scale + 0.5;
1650                                 if (w > max_w) w = max_w;
1651                                 }
1652                         else
1653                                 {
1654                                 scale = (gdouble)max_w / w;
1655                                 w = max_w;
1656                                 h = h * scale * pr->aspect_ratio + 0.5;
1657                                 if (h > max_h) h = max_h;
1658                                 }
1659
1660                         if (pr->autofit_limit)
1661                                 {
1662                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1663                                 w = w * factor + 0.5;
1664                                 h = h * factor + 0.5;
1665                                 scale = scale * factor;
1666                                 }
1667
1668                         if (w < 1) w = 1;
1669                         if (h < 1) h = 1;
1670                         }
1671                 else
1672                         {
1673                         scale = 1.0;
1674                         }
1675                 }
1676         else if (zoom > 0.0) /* zoom orig, in */
1677                 {
1678                 scale = zoom;
1679                 w = w * scale;
1680                 h = h * scale * pr->aspect_ratio;
1681                 }
1682         else /* zoom out */
1683                 {
1684                 scale = 1.0 / (0.0 - zoom);
1685                 w = w * scale;
1686                 h = h * scale * pr->aspect_ratio;
1687                 }
1688
1689         pr->zoom = zoom;
1690         pr->width = w;
1691         pr->height = h;
1692         pr->scale = scale;
1693
1694         return TRUE;
1695 }
1696
1697 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1698                          PrZoomFlags flags, gint px, gint py)
1699 {
1700         gdouble old_scale;
1701         gint old_cx, old_cy;
1702         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1703         gboolean force = !!(flags & PR_ZOOM_FORCE);
1704         gboolean new = !!(flags & PR_ZOOM_NEW);
1705         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1706         PrZoomFlags clamp_flags = flags;
1707         gdouble old_center_x = pr->norm_center_x;
1708         gdouble old_center_y = pr->norm_center_y;
1709
1710         old_scale = pr->scale;
1711         if (center_point)
1712                 {
1713                 px = CLAMP(px, 0, pr->width);
1714                 py = CLAMP(py, 0, pr->height);
1715                 old_cx = pr->x_scroll + (px - pr->x_offset);
1716                 old_cy = pr->y_scroll + (py - pr->y_offset);
1717                 }
1718         else
1719                 {
1720                 px = py = 0;
1721                 old_cx = pr->x_scroll + pr->vis_width / 2;
1722                 old_cy = pr->y_scroll + pr->vis_height / 2;
1723                 }
1724
1725         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1726         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1727
1728         (void) pr_size_clamp(pr);
1729         (void) pr_parent_window_resize(pr, pr->width, pr->height);
1730
1731         if (force && new)
1732                 {
1733                 switch (pr->scroll_reset)
1734                         {
1735                         case PR_SCROLL_RESET_NOCHANGE:
1736                                 /* maintain old scroll position */
1737                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1738                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1739                                 break;
1740                         case PR_SCROLL_RESET_CENTER:
1741                                 /* center new image */
1742                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1743                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1744                                 break;
1745                         case PR_SCROLL_RESET_TOPLEFT:
1746                         default:
1747                                 /* reset to upper left */
1748                                 pr->x_scroll = 0;
1749                                 pr->y_scroll = 0;
1750                                 break;
1751                         }
1752                 }
1753         else
1754                 {
1755                 /* user zoom does not force, so keep visible center point */
1756                 if (center_point)
1757                         {
1758                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1759                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1760                         }
1761                 else
1762                         {
1763                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1764                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1765                         }
1766                 }
1767
1768         pr_scroll_clamp(pr);
1769
1770         pr->renderer->update_zoom(pr->renderer, lazy);
1771         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1772
1773         pr_scroll_notify_signal(pr);
1774         pr_zoom_signal(pr);
1775         pr_update_signal(pr);
1776 }
1777
1778 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1779 {
1780         gboolean zoom_changed = FALSE;
1781
1782         gint new_viewport_width = new_width;
1783         gint new_viewport_height = new_height;
1784
1785         if (!pr->stereo_temp_disable)
1786                 {
1787                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1788                         {
1789                         new_viewport_width = new_width / 2;
1790                         }
1791                 else if (pr->stereo_mode & PR_STEREO_VERT)
1792                         {
1793                         new_viewport_height = new_height / 2;
1794                         }
1795                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1796                         {
1797                         new_viewport_width = pr->stereo_fixed_width;
1798                         new_viewport_height = pr->stereo_fixed_height;
1799                         }
1800                 }
1801
1802         if (pr->window_width == new_width && pr->window_height == new_height &&
1803             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1804
1805         pr->window_width = new_width;
1806         pr->window_height = new_height;
1807         pr->viewport_width = new_viewport_width;
1808         pr->viewport_height = new_viewport_height;
1809
1810         if (pr->zoom == 0.0)
1811                 {
1812                 gdouble old_scale = pr->scale;
1813                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1814                 zoom_changed = (old_scale != pr->scale);
1815                 }
1816
1817         pr_size_clamp(pr);
1818         pr_scroll_clamp(pr);
1819
1820         if (zoom_changed)
1821                 {
1822                 pr->renderer->update_zoom(pr->renderer, FALSE);
1823                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1824                 }
1825
1826         pr->renderer->update_viewport(pr->renderer);
1827         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1828
1829
1830         /* ensure scroller remains visible */
1831         if (pr->scroller_overlay != -1)
1832                 {
1833                 gboolean update = FALSE;
1834
1835                 if (pr->scroller_x > new_width)
1836                         {
1837                         pr->scroller_x = new_width;
1838                         pr->scroller_xpos = new_width;
1839                         update = TRUE;
1840                         }
1841                 if (pr->scroller_y > new_height)
1842                         {
1843                         pr->scroller_y = new_height;
1844                         pr->scroller_ypos = new_height;
1845                         update = TRUE;
1846                         }
1847
1848                 if (update)
1849                         {
1850                         GdkPixbuf *pixbuf;
1851
1852                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1853                                 {
1854                                 gint w, h;
1855
1856                                 w = gdk_pixbuf_get_width(pixbuf);
1857                                 h = gdk_pixbuf_get_height(pixbuf);
1858                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1859                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1860                                 }
1861                         }
1862                 }
1863
1864         pr_scroll_notify_signal(pr);
1865         if (zoom_changed) pr_zoom_signal(pr);
1866         pr_update_signal(pr);
1867 }
1868
1869 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1870 {
1871         PixbufRenderer *pr = data;
1872
1873         pr_size_sync(pr, allocation->width, allocation->height);
1874 }
1875
1876 /*
1877  *-------------------------------------------------------------------
1878  * scrolling
1879  *-------------------------------------------------------------------
1880  */
1881
1882 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1883 {
1884         gint old_x, old_y;
1885         gint x_off, y_off;
1886
1887         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1888
1889         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1890
1891         old_x = pr->x_scroll;
1892         old_y = pr->y_scroll;
1893
1894         pr->x_scroll += x;
1895         pr->y_scroll += y;
1896
1897         pr_scroll_clamp(pr);
1898
1899         pixbuf_renderer_sync_scroll_center(pr);
1900
1901         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1902
1903         pr_scroll_notify_signal(pr);
1904
1905         x_off = pr->x_scroll - old_x;
1906         y_off = pr->y_scroll - old_y;
1907
1908         pr->renderer->scroll(pr->renderer, x_off, y_off);
1909         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1910 }
1911
1912 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1913                                      gdouble x_align, gdouble y_align)
1914 {
1915         gint px, py;
1916         gint ax, ay;
1917
1918         x_align = CLAMP(x_align, 0.0, 1.0);
1919         y_align = CLAMP(y_align, 0.0, 1.0);
1920
1921         ax = (gdouble)pr->vis_width * x_align;
1922         ay = (gdouble)pr->vis_height * y_align;
1923
1924         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1925         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1926
1927         pixbuf_renderer_scroll(pr, px, py);
1928 }
1929
1930 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1931
1932 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1933 {
1934         *x = pr->norm_center_x;
1935         *y = pr->norm_center_y;
1936 }
1937
1938 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1939 {
1940         gdouble dst_x, dst_y;
1941
1942         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1943         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1944
1945         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1946         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1947
1948         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1949 }
1950
1951 /*
1952  *-------------------------------------------------------------------
1953  * mouse
1954  *-------------------------------------------------------------------
1955  */
1956
1957 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventMotion *event, gpointer data)
1958 {
1959         PixbufRenderer *pr;
1960         gint accel;
1961 #if GTK_CHECK_VERSION(3,0,0)
1962         GdkDeviceManager *device_manager;
1963         GdkDevice *device;
1964 #endif
1965
1966         /* This is a hack, but work far the best, at least for single pointer systems.
1967          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
1968         gint x, y;
1969 #if GTK_CHECK_VERSION(3,0,0)
1970         device_manager = gdk_display_get_device_manager(gdk_window_get_display(event->window));
1971         device = gdk_device_manager_get_client_pointer(device_manager);
1972         gdk_window_get_device_position(event->window, device, &x, &y, NULL);
1973 #else
1974         gdk_window_get_pointer (event->window, &x, &y, NULL);
1975 #endif
1976         event->x = x;
1977         event->y = y;
1978
1979         pr = PIXBUF_RENDERER(widget);
1980
1981         if (pr->scroller_id)
1982                 {
1983                 pr->scroller_xpos = event->x;
1984                 pr->scroller_ypos = event->y;
1985                 }
1986
1987         pr->x_mouse = event->x;
1988         pr->y_mouse = event->y;
1989         pr_update_pixel_signal(pr);
1990
1991         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
1992
1993         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
1994                 {
1995                 pr->drag_moved++;
1996                 }
1997         else
1998                 {
1999                 widget_set_cursor(widget, GDK_FLEUR);
2000                 }
2001
2002         if (event->state & GDK_CONTROL_MASK)
2003                 {
2004                 accel = PR_PAN_SHIFT_MULTIPLIER;
2005                 }
2006         else
2007                 {
2008                 accel = 1;
2009                 }
2010
2011         /* do the scroll */
2012         pixbuf_renderer_scroll(pr, (pr->drag_last_x - event->x) * accel,
2013                                (pr->drag_last_y - event->y) * accel);
2014
2015         pr_drag_signal(pr, event);
2016
2017         pr->drag_last_x = event->x;
2018         pr->drag_last_y = event->y;
2019
2020         /* This is recommended by the GTK+ documentation, but does not work properly.
2021          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2022          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2023          */
2024         /* gdk_event_request_motions (event); */
2025         return FALSE;
2026 }
2027
2028 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2029 {
2030         PixbufRenderer *pr;
2031
2032         pr = PIXBUF_RENDERER(widget);
2033         pr->x_mouse = -1;
2034         pr->y_mouse = -1;
2035
2036         pr_update_pixel_signal(pr);
2037         return FALSE;
2038 }
2039
2040 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2041 {
2042         PixbufRenderer *pr;
2043         GtkWidget *parent;
2044
2045         pr = PIXBUF_RENDERER(widget);
2046
2047         if (pr->scroller_id) return TRUE;
2048
2049         switch (bevent->button)
2050                 {
2051                 case MOUSE_BUTTON_LEFT:
2052                         pr->in_drag = TRUE;
2053                         pr->drag_last_x = bevent->x;
2054                         pr->drag_last_y = bevent->y;
2055                         pr->drag_moved = 0;
2056                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2057                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2058                                          NULL, NULL, bevent->time);
2059                         gtk_grab_add(widget);
2060                         break;
2061                 case MOUSE_BUTTON_MIDDLE:
2062                         pr->drag_moved = 0;
2063                         break;
2064                 case MOUSE_BUTTON_RIGHT:
2065                         pr_clicked_signal(pr, bevent);
2066                         break;
2067                 default:
2068                         break;
2069                 }
2070
2071         parent = gtk_widget_get_parent(widget);
2072         if (widget && gtk_widget_get_can_focus(parent))
2073                 {
2074                 gtk_widget_grab_focus(parent);
2075                 }
2076
2077         return FALSE;
2078 }
2079
2080 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2081 {
2082         PixbufRenderer *pr;
2083
2084         pr = PIXBUF_RENDERER(widget);
2085
2086         if (pr->scroller_id)
2087                 {
2088                 pr_scroller_stop(pr);
2089                 return TRUE;
2090                 }
2091
2092         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2093                 {
2094                 gtk_grab_remove(widget);
2095                 gdk_pointer_ungrab(bevent->time);
2096                 widget_set_cursor(widget, -1);
2097                 }
2098
2099         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2100                 {
2101                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2102                         {
2103                         pr_scroller_start(pr, bevent->x, bevent->y);
2104                         }
2105                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2106                         {
2107                         pr_clicked_signal(pr, bevent);
2108                         }
2109                 }
2110
2111         pr->in_drag = FALSE;
2112
2113         return FALSE;
2114 }
2115
2116 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2117 {
2118         PixbufRenderer *pr;
2119
2120         pr = PIXBUF_RENDERER(widget);
2121
2122         if (pr->scroller_id)
2123                 {
2124                 pr->scroller_xpos = pr->scroller_x;
2125                 pr->scroller_ypos = pr->scroller_y;
2126                 pr->scroller_xinc = 0;
2127                 pr->scroller_yinc = 0;
2128                 }
2129
2130         return FALSE;
2131 }
2132
2133 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2134 {
2135         PixbufRenderer *pr;
2136
2137         pr = PIXBUF_RENDERER(widget);
2138
2139         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2140 }
2141
2142 static void pr_signals_connect(PixbufRenderer *pr)
2143 {
2144         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2145                          G_CALLBACK(pr_mouse_motion_cb), pr);
2146         g_signal_connect(G_OBJECT(pr), "button_press_event",
2147                          G_CALLBACK(pr_mouse_press_cb), pr);
2148         g_signal_connect(G_OBJECT(pr), "button_release_event",
2149                          G_CALLBACK(pr_mouse_release_cb), pr);
2150         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2151                          G_CALLBACK(pr_mouse_leave_cb), pr);
2152         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2153                          G_CALLBACK(pr_leave_notify_cb), pr);
2154
2155         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2156                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
2157                                               GDK_LEAVE_NOTIFY_MASK);
2158
2159         g_signal_connect(G_OBJECT(pr), "drag_begin",
2160                          G_CALLBACK(pr_mouse_drag_cb), pr);
2161
2162 }
2163
2164 /*
2165  *-------------------------------------------------------------------
2166  * stereo support
2167  *-------------------------------------------------------------------
2168  */
2169
2170 #define COLOR_BYTES 3   /* rgb */
2171 #define RC 0            /* Red-Cyan */
2172 #define GM 1            /* Green-Magenta */
2173 #define YB 2            /* Yellow-Blue */
2174
2175 static void pr_create_anaglyph_color(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2176 {
2177         gint srs, drs;
2178         guchar *s_pix, *d_pix;
2179         guchar *sp, *dp;
2180         guchar *spi, *dpi;
2181         gint i, j;
2182
2183         srs = gdk_pixbuf_get_rowstride(right);
2184         s_pix = gdk_pixbuf_get_pixels(right);
2185         spi = s_pix + (x * COLOR_BYTES);
2186
2187         drs = gdk_pixbuf_get_rowstride(pixbuf);
2188         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2189         dpi =  d_pix + x * COLOR_BYTES;
2190
2191         for (i = y; i < y + h; i++)
2192                 {
2193                 sp = spi + (i * srs);
2194                 dp = dpi + (i * drs);
2195                 for (j = 0; j < w; j++)
2196                         {
2197                         switch(mode)
2198                                 {
2199                                 case RC:
2200                                         dp[0] = sp[0]; /* copy red channel */
2201                                         break;
2202                                 case GM:
2203                                         dp[1] = sp[1];
2204                                         break;
2205                                 case YB:
2206                                         dp[0] = sp[0];
2207                                         dp[1] = sp[1];
2208                                         break;
2209                                 }
2210                         sp += COLOR_BYTES;
2211                         dp += COLOR_BYTES;
2212                         }
2213                 }
2214 }
2215
2216 static void pr_create_anaglyph_gray(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         const double gc[3] = {0.299, 0.587, 0.114};
2224
2225         srs = gdk_pixbuf_get_rowstride(right);
2226         s_pix = gdk_pixbuf_get_pixels(right);
2227         spi = s_pix + (x * COLOR_BYTES);
2228
2229         drs = gdk_pixbuf_get_rowstride(pixbuf);
2230         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2231         dpi =  d_pix + x * COLOR_BYTES;
2232
2233         for (i = y; i < y + h; i++)
2234                 {
2235                 sp = spi + (i * srs);
2236                 dp = dpi + (i * drs);
2237                 for (j = 0; j < w; j++)
2238                         {
2239                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2240                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2241                         switch(mode)
2242                                 {
2243                                 case RC:
2244                                         dp[0] = g2; /* red channel from sp */
2245                                         dp[1] = g1; /* green and blue from dp */
2246                                         dp[2] = g1;
2247                                         break;
2248                                 case GM:
2249                                         dp[0] = g1;
2250                                         dp[1] = g2;
2251                                         dp[2] = g1;
2252                                         break;
2253                                 case YB:
2254                                         dp[0] = g2;
2255                                         dp[1] = g2;
2256                                         dp[2] = g1;
2257                                         break;
2258                                 }
2259                         sp += COLOR_BYTES;
2260                         dp += COLOR_BYTES;
2261                         }
2262                 }
2263 }
2264
2265 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h, guint mode)
2266 {
2267         gint srs, drs;
2268         guchar *s_pix, *d_pix;
2269         guchar *sp, *dp;
2270         guchar *spi, *dpi;
2271         gint i, j, k;
2272         double pr_dubois_matrix[3][6];
2273         const static double pr_dubois_matrix_RC[3][6] = {
2274                 { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2275                 {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2276                 {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}};
2277         const static double pr_dubois_matrix_GM[3][6] = {
2278                 {-0.062, -0.158, -0.039,  0.529,  0.705,  0.024},
2279                 { 0.284,  0.668,  0.143, -0.016, -0.015, -0.065},
2280                 {-0.015, -0.027,  0.021,  0.009,  0.075,  0.937}};
2281         const static double pr_dubois_matrix_YB[3][6] = {
2282                 { 1.000, -0.193,  0.282, -0.015, -0.116, -0.016},
2283                 {-0.024,  0.855,  0.064,  0.006,  0.058, -0.016},
2284                 {-0.036, -0.163,  0.021,  0.089,  0.174,  0.858}};
2285
2286         switch(mode)
2287                 {
2288                 case RC:
2289                         memcpy(pr_dubois_matrix, pr_dubois_matrix_RC, sizeof pr_dubois_matrix);
2290                         break;
2291                 case GM:
2292                         memcpy(pr_dubois_matrix, pr_dubois_matrix_GM, sizeof pr_dubois_matrix);
2293                         break;
2294                 case YB:
2295                         memcpy(pr_dubois_matrix, pr_dubois_matrix_YB, sizeof pr_dubois_matrix);
2296                         break;
2297                 }
2298
2299         srs = gdk_pixbuf_get_rowstride(right);
2300         s_pix = gdk_pixbuf_get_pixels(right);
2301         spi = s_pix + (x * COLOR_BYTES);
2302
2303         drs = gdk_pixbuf_get_rowstride(pixbuf);
2304         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2305         dpi =  d_pix + x * COLOR_BYTES;
2306
2307         for (i = y; i < y + h; i++)
2308                 {
2309                 sp = spi + (i * srs);
2310                 dp = dpi + (i * drs);
2311                 for (j = 0; j < w; j++)
2312                         {
2313                         double res[3];
2314                         for (k = 0; k < 3; k++)
2315                                 {
2316                                 const double *m = pr_dubois_matrix[k];
2317                                 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];
2318                                 if (res[k] < 0.0) res[k] = 0;
2319                                 if (res[k] > 255.0) res[k] = 255.0;
2320                                 }
2321                         dp[0] = res[0];
2322                         dp[1] = res[1];
2323                         dp[2] = res[2];
2324                         sp += COLOR_BYTES;
2325                         dp += COLOR_BYTES;
2326                         }
2327                 }
2328 }
2329
2330 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2331 {
2332         if (mode & PR_STEREO_ANAGLYPH_RC)
2333                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, RC);
2334         else if (mode & PR_STEREO_ANAGLYPH_GM)
2335                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, GM);
2336         else if (mode & PR_STEREO_ANAGLYPH_YB)
2337                 pr_create_anaglyph_color(pixbuf, right, x, y, w, h, YB);
2338         else if (mode & PR_STEREO_ANAGLYPH_GRAY_RC)
2339                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, RC);
2340         else if (mode & PR_STEREO_ANAGLYPH_GRAY_GM)
2341                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, GM);
2342         else if (mode & PR_STEREO_ANAGLYPH_GRAY_YB)
2343                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h, YB);
2344         else if (mode & PR_STEREO_ANAGLYPH_DB_RC)
2345                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, RC);
2346         else if (mode & PR_STEREO_ANAGLYPH_DB_GM)
2347                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, GM);
2348         else if (mode & PR_STEREO_ANAGLYPH_DB_YB)
2349                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h, YB);
2350 }
2351
2352 /*
2353  *-------------------------------------------------------------------
2354  * public
2355  *-------------------------------------------------------------------
2356  */
2357 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2358 {
2359         pr->stereo_pixbuf_offset_left = 0;
2360         pr->stereo_pixbuf_offset_right = 0;
2361         if (!pr->pixbuf) return;
2362         switch (pr->orientation)
2363                 {
2364                 case EXIF_ORIENTATION_LEFT_TOP:
2365                 case EXIF_ORIENTATION_RIGHT_TOP:
2366                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2367                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2368                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2369                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2370                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2371                                 {
2372                                 pr->image_height /= 2;
2373                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2374                                 }
2375                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2376                                 {
2377                                 pr->image_height /= 2;
2378                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2379                                 }
2380
2381                         break;
2382                 default:
2383                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2384                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2385                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2386                                 {
2387                                 pr->image_width /= 2;
2388                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2389                                 }
2390                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2391                                 {
2392                                 pr->image_width /= 2;
2393                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2394                                 }
2395                 }
2396 }
2397
2398 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2399 {
2400         if (pixbuf) g_object_ref(pixbuf);
2401         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2402         pr->pixbuf = pixbuf;
2403
2404         if (!pr->pixbuf)
2405                 {
2406                 /* no pixbuf so just clear the window */
2407                 pr->image_width = 0;
2408                 pr->image_height = 0;
2409                 pr->scale = 1.0;
2410                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2411                                     and used for pixbuf_renderer_zoom_get */
2412
2413                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2414                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2415
2416                 pr_update_signal(pr);
2417
2418                 return;
2419                 }
2420
2421         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2422                 {
2423                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2424                 pr_stereo_temp_disable(pr, disable);
2425                 }
2426
2427         pr_pixbuf_size_sync(pr);
2428         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2429         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2430         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2431 }
2432
2433 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2434 {
2435         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2436
2437         pr_source_tile_unset(pr);
2438
2439         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2440
2441         pr_update_signal(pr);
2442 }
2443
2444 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2445 {
2446         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2447
2448         pr_source_tile_unset(pr);
2449
2450         pr->orientation = orientation;
2451         pr->stereo_data = stereo_data;
2452         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2453
2454         pr_update_signal(pr);
2455 }
2456
2457 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2458 {
2459         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2460
2461         return pr->pixbuf;
2462 }
2463
2464 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2465 {
2466         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2467
2468         pr->orientation = orientation;
2469
2470         pr_pixbuf_size_sync(pr);
2471         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2472 }
2473
2474 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2475 {
2476         if (!pr) return 1;
2477         return pr->orientation;
2478 }
2479
2480 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2481 {
2482         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2483         if (pr->stereo_data == stereo_data) return;
2484
2485
2486         pr->stereo_data = stereo_data;
2487
2488         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2489                 {
2490                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2491                 pr_stereo_temp_disable(pr, disable);
2492                 }
2493         pr_pixbuf_size_sync(pr);
2494         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2495         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2496         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2497 }
2498
2499 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2500 {
2501         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2502
2503         pr->func_post_process = func;
2504         pr->post_process_user_data = user_data;
2505         pr->post_process_slow = func && slow;
2506
2507 }
2508
2509
2510 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2511 {
2512         GObject *object;
2513         PixbufRendererScrollResetType scroll_reset;
2514
2515         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2516         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2517
2518         if (pr == source) return;
2519
2520         object = G_OBJECT(pr);
2521
2522         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2523         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2524         g_object_set(object, "loading", source->loading, NULL);
2525
2526         pr->complete = source->complete;
2527
2528         pr->x_scroll = source->x_scroll;
2529         pr->y_scroll = source->y_scroll;
2530         pr->x_mouse  = source->x_mouse;
2531         pr->y_mouse  = source->y_mouse;
2532
2533         scroll_reset = pr->scroll_reset;
2534         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2535
2536         pr->func_post_process = source->func_post_process;
2537         pr->post_process_user_data = source->post_process_user_data;
2538         pr->post_process_slow = source->post_process_slow;
2539         pr->orientation = source->orientation;
2540         pr->stereo_data = source->stereo_data;
2541
2542         if (source->source_tiles_enabled)
2543                 {
2544                 pr_source_tile_unset(pr);
2545
2546                 pr->source_tiles_enabled = source->source_tiles_enabled;
2547                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2548                 pr->source_tile_width = source->source_tile_width;
2549                 pr->source_tile_height = source->source_tile_height;
2550                 pr->image_width = source->image_width;
2551                 pr->image_height = source->image_height;
2552
2553                 pr->func_tile_request = source->func_tile_request;
2554                 pr->func_tile_dispose = source->func_tile_dispose;
2555                 pr->func_tile_data = source->func_tile_data;
2556
2557                 pr->source_tiles = source->source_tiles;
2558                 source->source_tiles = NULL;
2559
2560                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2561                 }
2562         else
2563                 {
2564                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2565                 }
2566
2567         pr->scroll_reset = scroll_reset;
2568
2569         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2570 }
2571
2572 void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
2573 {
2574         GObject *object;
2575         PixbufRendererScrollResetType scroll_reset;
2576
2577         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2578         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2579
2580         if (pr == source) return;
2581
2582         object = G_OBJECT(pr);
2583
2584         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2585         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2586         g_object_set(object, "loading", source->loading, NULL);
2587
2588         pr->complete = source->complete;
2589
2590         pr->x_scroll = source->x_scroll;
2591         pr->y_scroll = source->y_scroll;
2592         pr->x_mouse  = source->x_mouse;
2593         pr->y_mouse  = source->y_mouse;
2594
2595         scroll_reset = pr->scroll_reset;
2596         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2597
2598         pr->orientation = source->orientation;
2599         pr->stereo_data = source->stereo_data;
2600
2601         if (source->source_tiles_enabled)
2602                 {
2603                 pr->source_tiles_enabled = source->source_tiles_enabled;
2604                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2605                 pr->source_tile_width = source->source_tile_width;
2606                 pr->source_tile_height = source->source_tile_height;
2607                 pr->image_width = source->image_width;
2608                 pr->image_height = source->image_height;
2609
2610                 pr->func_tile_request = source->func_tile_request;
2611                 pr->func_tile_dispose = source->func_tile_dispose;
2612                 pr->func_tile_data = source->func_tile_data;
2613
2614                 pr->source_tiles = source->source_tiles;
2615                 source->source_tiles = NULL;
2616
2617                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2618                 }
2619         else
2620                 {
2621                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2622                 }
2623
2624         pr->scroll_reset = scroll_reset;
2625 }
2626
2627 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2628 {
2629         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2630
2631         if (pr->source_tiles_enabled)
2632                 {
2633                 pr_source_tile_changed(pr, x, y, w, h);
2634                 }
2635
2636         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2637         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2638 }
2639
2640 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2641 {
2642         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2643
2644         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2645 }
2646
2647 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2648 {
2649         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2650
2651         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2652 }
2653
2654 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2655 {
2656         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2657
2658         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2659 }
2660
2661 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2662 {
2663         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2664
2665         return pr->zoom;
2666 }
2667
2668 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2669 {
2670         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2671
2672         return pr->scale;
2673 }
2674
2675 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2676 {
2677         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2678
2679         if (min > 1.0 || max < 1.0) return;
2680         if (min < 1.0 && min > -1.0) return;
2681         if (min < -200.0 || max > 200.0) return;
2682
2683         if (pr->zoom_min != min)
2684                 {
2685                 pr->zoom_min = min;
2686                 g_object_notify(G_OBJECT(pr), "zoom_min");
2687                 }
2688         if (pr->zoom_max != max)
2689                 {
2690                 pr->zoom_max = max;
2691                 g_object_notify(G_OBJECT(pr), "zoom_max");
2692                 }
2693 }
2694
2695 static void pr_stereo_set(PixbufRenderer *pr)
2696 {
2697         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2698
2699         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2700
2701         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2702                 {
2703                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2704                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2705                 }
2706         else
2707                 {
2708                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2709                 pr->renderer2 = NULL;
2710                 }
2711         if (pr->stereo_mode & PR_STEREO_HALF)
2712                 {
2713                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2714                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2715                 else pr->aspect_ratio = 1.0;
2716                 }
2717         else
2718                 {
2719                 pr->aspect_ratio = 1.0;
2720                 }
2721 }
2722
2723 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2724 {
2725         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2726         pr->stereo_mode = stereo_mode;
2727         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2728
2729         pr->stereo_temp_disable = FALSE;
2730
2731         pr_stereo_set(pr);
2732
2733         if (redraw)
2734                 {
2735                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2736                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2737                 }
2738 }
2739
2740 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2741 {
2742         pr->stereo_fixed_width = width;
2743         pr->stereo_fixed_height = height;
2744         pr->stereo_fixed_x_left = x1;
2745         pr->stereo_fixed_y_left = y1;
2746         pr->stereo_fixed_x_right = x2;
2747         pr->stereo_fixed_y_right = y2;
2748 }
2749
2750 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2751 {
2752         return pr->stereo_mode;
2753 }
2754
2755 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2756 {
2757         if (pr->stereo_temp_disable == disable) return;
2758         pr->stereo_temp_disable = disable;
2759         if (disable)
2760                 {
2761                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2762                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2763                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2764                 pr->renderer2 = NULL;
2765                 pr->aspect_ratio = 1.0;
2766                 }
2767         else
2768                 {
2769                 pr_stereo_set(pr);
2770                 }
2771         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2772 }
2773
2774 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2775                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2776 {
2777         GdkPixbuf *pb = pr->pixbuf;
2778         gint p_alpha, prs;
2779         guchar *p_pix, *pp;
2780         gint map_x, map_y, map_w, map_h;
2781         size_t xoff, yoff;
2782
2783         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2784         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2785
2786         if (!pr->pixbuf && !pr->source_tiles_enabled)
2787                 {
2788                 *r_mouse = -1;
2789                 *g_mouse = -1;
2790                 *b_mouse = -1;
2791                 return FALSE;
2792                 }
2793
2794         if (!pb) return FALSE;
2795
2796         pr_tile_region_map_orientation(pr->orientation,
2797                                         x_pixel, y_pixel,
2798                                         pr->image_width, pr->image_height,
2799                                         1, 1, /*single pixel */
2800                                         &map_x, &map_y,
2801                                         &map_w, &map_h);
2802
2803         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2804         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2805
2806         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2807         prs = gdk_pixbuf_get_rowstride(pb);
2808         p_pix = gdk_pixbuf_get_pixels(pb);
2809
2810         xoff = (size_t)map_x * (p_alpha ? 4 : 3);
2811         yoff = (size_t)map_y * prs;
2812         pp = p_pix + yoff + xoff;
2813         *r_mouse = *pp;
2814         pp++;
2815         *g_mouse = *pp;
2816         pp++;
2817         *b_mouse = *pp;
2818
2819         return TRUE;
2820 }
2821
2822 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2823 {
2824         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2825
2826         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2827         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2828
2829         if (!pr->pixbuf && !pr->source_tiles_enabled)
2830                 {
2831                 *x_pixel_return = -1;
2832                 *y_pixel_return = -1;
2833                 return FALSE;
2834                 }
2835
2836         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2837         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2838         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2839         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2840
2841         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2842                 {
2843                 /* mouse is not on pr */
2844                 x_pixel = y_pixel = -1;
2845                 }
2846
2847         *x_pixel_return = x_pixel;
2848         *y_pixel_return = y_pixel;
2849
2850         return TRUE;
2851 }
2852
2853 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2854 {
2855         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2856         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2857
2858         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2859                 {
2860                 *width = 0;
2861                 *height = 0;
2862                 return FALSE;
2863                 }
2864
2865         *width = pr->image_width;
2866         *height = pr->image_height;
2867         return TRUE;
2868 }
2869
2870 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2871 {
2872         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2873         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2874
2875         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2876                 {
2877                 *width = 0;
2878                 *height = 0;
2879                 return FALSE;
2880                 }
2881
2882         *width = pr->width;
2883         *height = pr->height;
2884         return TRUE;
2885 }
2886
2887 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2888 {
2889         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2890         g_return_val_if_fail(rect != NULL, FALSE);
2891
2892         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2893             !pr->scale)
2894                 {
2895                 rect->x = 0;
2896                 rect->y = 0;
2897                 rect->width = 0;
2898                 rect->height = 0;
2899                 return FALSE;
2900                 }
2901
2902         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2903         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2904         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2905         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2906         return TRUE;
2907 }
2908
2909 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2910 {
2911         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2912         g_return_val_if_fail(rect != NULL, FALSE);
2913
2914         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2915                 {
2916                 rect->x = 0;
2917                 rect->y = 0;
2918                 rect->width = 0;
2919                 rect->height = 0;
2920                 return FALSE;
2921                 }
2922
2923         rect->x = pr->x_scroll;
2924         rect->y = pr->y_scroll;
2925         rect->width = pr->vis_width;
2926         rect->height = pr->vis_height;
2927         return TRUE;
2928 }
2929
2930 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2931 {
2932 #if 0
2933         /* FIXME: this function does not consider the image orientation,
2934         so it probably only breaks something */
2935         gdouble zoom;
2936         gint w, h;
2937
2938         zoom = pixbuf_renderer_zoom_get(pr);
2939         pr->image_width = width;
2940         pr->image_height = height;
2941
2942         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2943
2944         //w = width;
2945         //h = height;
2946
2947         //pr->width = width;
2948         //pr->height = height;
2949 #endif
2950 }
2951
2952 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */