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