src/pixbuf-renderer.c

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