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