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 /* comment this out if not using this from within Geeqie
  29  * defining GQ_BUILD does these things:
  30  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  31  */
  32 #define GQ_BUILD 1
  33
  34 #ifdef GQ_BUILD
  35 #include "main.h"
  36 #include "pixbuf_util.h"
  37 #include "exif.h"
  38 #else
  39 typedef enum {
  40         EXIF_ORIENTATION_UNKNOWN        = 0,
  41         EXIF_ORIENTATION_TOP_LEFT       = 1,
  42         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  43         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  44         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  45         EXIF_ORIENTATION_LEFT_TOP       = 5,
  46         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  47         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  48         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  49 } ExifOrientationType;
  50 #endif
  51
  52
  53 /* default min and max zoom */
  54 #define PR_ZOOM_MIN -32.0
  55 #define PR_ZOOM_MAX 32.0
  56
  57 /* distance to drag mouse to disable image flip */
  58 #define PR_DRAG_SCROLL_THRESHHOLD 4
  59
  60 /* increase pan rate when holding down shift */
  61 #define PR_PAN_SHIFT_MULTIPLIER 6
  62
  63 /* scroller config */
  64 #define PR_SCROLLER_UPDATES_PER_SEC 30
  65 #define PR_SCROLLER_DEAD_ZONE 6
  66
  67 /* when scaling image to below this size, use nearest pixel for scaling
  68  * (below about 4, the other scale types become slow generating their conversion tables)
  69  */
  70 #define PR_MIN_SCALE_SIZE 8
  71
  72 enum {
  73         SIGNAL_ZOOM = 0,
  74         SIGNAL_CLICKED,
  75         SIGNAL_SCROLL_NOTIFY,
  76         SIGNAL_RENDER_COMPLETE,
  77         SIGNAL_DRAG,
  78         SIGNAL_UPDATE_PIXEL,
  79         SIGNAL_COUNT
  80 };
  81
  82 enum {
  83         PROP_0,
  84         PROP_ZOOM_MIN,
  85         PROP_ZOOM_MAX,
  86         PROP_ZOOM_QUALITY,
  87         PROP_ZOOM_2PASS,
  88         PROP_ZOOM_EXPAND,
  89         PROP_SCROLL_RESET,
  90         PROP_DELAY_FLIP,
  91         PROP_LOADING,
  92         PROP_COMPLETE,
  93         PROP_CACHE_SIZE_DISPLAY,
  94         PROP_CACHE_SIZE_TILES,
  95         PROP_WINDOW_FIT,
  96         PROP_WINDOW_LIMIT,
  97         PROP_WINDOW_LIMIT_VALUE,
  98         PROP_AUTOFIT_LIMIT,
  99         PROP_AUTOFIT_LIMIT_VALUE
 100 };
 101
 102 typedef enum {
 103         PR_ZOOM_NONE            = 0,
 104         PR_ZOOM_FORCE           = 1 << 0,
 105         PR_ZOOM_NEW             = 1 << 1,
 106         PR_ZOOM_CENTER          = 1 << 2,
 107         PR_ZOOM_INVALIDATE      = 1 << 3,
 108         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 109 } PrZoomFlags;
 110
 111 static guint signals[SIGNAL_COUNT] = { 0 };
 112 static GtkEventBoxClass *parent_class = NULL;
 113
 114
 115
 116 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 117 static void pixbuf_renderer_init(PixbufRenderer *pr);
 118 static void pixbuf_renderer_finalize(GObject *object);
 119 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 120                                          const GValue *value, GParamSpec *pspec);
 121 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 122                                          GValue *value, GParamSpec *pspec);
 123 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 124
 125
 126 static void pr_source_tile_free_all(PixbufRenderer *pr);
 127
 128 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 129                          PrZoomFlags flags, gint px, gint py);
 130
 131 static void pr_signals_connect(PixbufRenderer *pr);
 132 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 133 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 134
 135
 136 /*
 137  *-------------------------------------------------------------------
 138  * Pixbuf Renderer object
 139  *-------------------------------------------------------------------
 140  */
 141
 142 GType pixbuf_renderer_get_type(void)
 143 {
 144         static GType pixbuf_renderer_type = 0;
 145
 146         if (!pixbuf_renderer_type)
 147                 {
 148                 static const GTypeInfo pixbuf_renderer_info =
 149                         {
 150                         sizeof(PixbufRendererClass), /* class_size */
 151                         NULL,           /* base_init */
 152                         NULL,           /* base_finalize */
 153                         (GClassInitFunc)pixbuf_renderer_class_init,
 154                         NULL,           /* class_finalize */
 155                         NULL,           /* class_data */
 156                         sizeof(PixbufRenderer), /* instance_size */
 157                         0,              /* n_preallocs */
 158                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 159                         NULL,           /* value_table */
 160                         };
 161
 162                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 163                                                               &pixbuf_renderer_info, 0);
 164                 }
 165
 166         return pixbuf_renderer_type;
 167 }
 168
 169 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 170 {
 171         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 172
 173         parent_class = g_type_class_peek_parent(class);
 174
 175         gobject_class->set_property = pixbuf_renderer_set_property;
 176         gobject_class->get_property = pixbuf_renderer_get_property;
 177
 178         gobject_class->finalize = pixbuf_renderer_finalize;
 179
 180         g_object_class_install_property(gobject_class,
 181                                         PROP_ZOOM_MIN,
 182                                         g_param_spec_double("zoom_min",
 183                                                             "Zoom minimum",
 184                                                             NULL,
 185                                                             -1000.0,
 186                                                             1000.0,
 187                                                             PR_ZOOM_MIN,
 188                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 189
 190         g_object_class_install_property(gobject_class,
 191                                         PROP_ZOOM_MAX,
 192                                         g_param_spec_double("zoom_max",
 193                                                             "Zoom maximum",
 194                                                             NULL,
 195                                                             -1000.0,
 196                                                             1000.0,
 197                                                             PR_ZOOM_MIN,
 198                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 199
 200         g_object_class_install_property(gobject_class,
 201                                         PROP_ZOOM_QUALITY,
 202                                         g_param_spec_uint("zoom_quality",
 203                                                           "Zoom quality",
 204                                                           NULL,
 205                                                           GDK_INTERP_NEAREST,
 206                                                           GDK_INTERP_HYPER,
 207                                                           GDK_INTERP_BILINEAR,
 208                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 209
 210         g_object_class_install_property(gobject_class,
 211                                         PROP_ZOOM_2PASS,
 212                                         g_param_spec_boolean("zoom_2pass",
 213                                                              "2 pass zoom",
 214                                                              NULL,
 215                                                              TRUE,
 216                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 217
 218         g_object_class_install_property(gobject_class,
 219                                         PROP_ZOOM_EXPAND,
 220                                         g_param_spec_boolean("zoom_expand",
 221                                                              "Expand image in autozoom.",
 222                                                              NULL,
 223                                                              FALSE,
 224                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 225         g_object_class_install_property(gobject_class,
 226                                         PROP_SCROLL_RESET,
 227                                         g_param_spec_uint("scroll_reset",
 228                                                           "New image scroll reset",
 229                                                           NULL,
 230                                                           PR_SCROLL_RESET_TOPLEFT,
 231                                                           PR_SCROLL_RESET_NOCHANGE,
 232                                                           PR_SCROLL_RESET_TOPLEFT,
 233                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 234
 235         g_object_class_install_property(gobject_class,
 236                                         PROP_DELAY_FLIP,
 237                                         g_param_spec_boolean("delay_flip",
 238                                                              "Delay image update",
 239                                                              NULL,
 240                                                              FALSE,
 241                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 242
 243         g_object_class_install_property(gobject_class,
 244                                         PROP_LOADING,
 245                                         g_param_spec_boolean("loading",
 246                                                              "Image actively loading",
 247                                                              NULL,
 248                                                              FALSE,
 249                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 250
 251         g_object_class_install_property(gobject_class,
 252                                         PROP_COMPLETE,
 253                                         g_param_spec_boolean("complete",
 254                                                              "Image rendering complete",
 255                                                              NULL,
 256                                                              FALSE,
 257                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 258
 259         g_object_class_install_property(gobject_class,
 260                                         PROP_CACHE_SIZE_DISPLAY,
 261                                         g_param_spec_uint("cache_display",
 262                                                           "Display cache size MB",
 263                                                           NULL,
 264                                                           0,
 265                                                           128,
 266                                                           PR_CACHE_SIZE_DEFAULT,
 267                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 268
 269         g_object_class_install_property(gobject_class,
 270                                         PROP_CACHE_SIZE_TILES,
 271                                         g_param_spec_uint("cache_tiles",
 272                                                           "Tile cache count",
 273                                                           "Number of tiles to retain in memory at any one time.",
 274                                                           0,
 275                                                           256,
 276                                                           PR_CACHE_SIZE_DEFAULT,
 277                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279         g_object_class_install_property(gobject_class,
 280                                         PROP_WINDOW_FIT,
 281                                         g_param_spec_boolean("window_fit",
 282                                                              "Fit window to image size",
 283                                                              NULL,
 284                                                              FALSE,
 285                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 286
 287         g_object_class_install_property(gobject_class,
 288                                         PROP_WINDOW_LIMIT,
 289                                         g_param_spec_boolean("window_limit",
 290                                                              "Limit size of parent window",
 291                                                              NULL,
 292                                                              FALSE,
 293                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 294
 295         g_object_class_install_property(gobject_class,
 296                                         PROP_WINDOW_LIMIT_VALUE,
 297                                         g_param_spec_uint("window_limit_value",
 298                                                           "Size limit of parent window",
 299                                                           NULL,
 300                                                           10,
 301                                                           150,
 302                                                           100,
 303                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 304
 305         g_object_class_install_property(gobject_class,
 306                                         PROP_AUTOFIT_LIMIT,
 307                                         g_param_spec_boolean("autofit_limit",
 308                                                              "Limit size of image when autofitting",
 309                                                              NULL,
 310                                                              FALSE,
 311                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 312
 313         g_object_class_install_property(gobject_class,
 314                                         PROP_AUTOFIT_LIMIT_VALUE,
 315                                         g_param_spec_uint("autofit_limit_value",
 316                                                           "Size limit of image when autofitting",
 317                                                           NULL,
 318                                                           10,
 319                                                           150,
 320                                                           100,
 321                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 322
 323
 324         signals[SIGNAL_ZOOM] =
 325                 g_signal_new("zoom",
 326                              G_OBJECT_CLASS_TYPE(gobject_class),
 327                              G_SIGNAL_RUN_LAST,
 328                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 329                              NULL, NULL,
 330                              g_cclosure_marshal_VOID__DOUBLE,
 331                              G_TYPE_NONE, 1,
 332                              G_TYPE_DOUBLE);
 333
 334         signals[SIGNAL_CLICKED] =
 335                 g_signal_new("clicked",
 336                              G_OBJECT_CLASS_TYPE(gobject_class),
 337                              G_SIGNAL_RUN_LAST,
 338                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 339                              NULL, NULL,
 340                              g_cclosure_marshal_VOID__BOXED,
 341                              G_TYPE_NONE, 1,
 342                              GDK_TYPE_EVENT);
 343
 344         signals[SIGNAL_SCROLL_NOTIFY] =
 345                 g_signal_new("scroll-notify",
 346                              G_OBJECT_CLASS_TYPE(gobject_class),
 347                              G_SIGNAL_RUN_LAST,
 348                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 349                              NULL, NULL,
 350                              g_cclosure_marshal_VOID__VOID,
 351                              G_TYPE_NONE, 0);
 352
 353         signals[SIGNAL_RENDER_COMPLETE] =
 354                 g_signal_new("render-complete",
 355                              G_OBJECT_CLASS_TYPE(gobject_class),
 356                              G_SIGNAL_RUN_LAST,
 357                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 358                              NULL, NULL,
 359                              g_cclosure_marshal_VOID__VOID,
 360                              G_TYPE_NONE, 0);
 361
 362         signals[SIGNAL_DRAG] =
 363                 g_signal_new("drag",
 364                              G_OBJECT_CLASS_TYPE(gobject_class),
 365                              G_SIGNAL_RUN_LAST,
 366                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 367                              NULL, NULL,
 368                              g_cclosure_marshal_VOID__BOXED,
 369                              G_TYPE_NONE, 1,
 370                              GDK_TYPE_EVENT);
 371
 372         signals[SIGNAL_UPDATE_PIXEL] =
 373                 g_signal_new("update-pixel",
 374                              G_OBJECT_CLASS_TYPE(gobject_class),
 375                              G_SIGNAL_RUN_LAST,
 376                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 377                              NULL, NULL,
 378                              g_cclosure_marshal_VOID__VOID,
 379                              G_TYPE_NONE, 0);
 380 }
 381
 382 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 383 {
 384         if (options->image.use_clutter_renderer)
 385                 {
 386 #ifdef HAVE_CLUTTER
 387                 return renderer_clutter_new(pr);
 388 #else
 389                 DEBUG_0("Geeqie is built without clutter renderer support");
 390 #endif
 391                 }
 392         return renderer_tiles_new(pr);
 393 }
 394
 395
 396 static void pixbuf_renderer_init(PixbufRenderer *pr)
 397 {
 398         GtkWidget *box;
 399
 400         box = GTK_WIDGET(pr);
 401
 402         pr->zoom_min = PR_ZOOM_MIN;
 403         pr->zoom_max = PR_ZOOM_MAX;
 404         pr->zoom_quality = GDK_INTERP_BILINEAR;
 405         pr->zoom_2pass = FALSE;
 406
 407         pr->zoom = 1.0;
 408         pr->scale = 1.0;
 409         pr->aspect_ratio = 1.0;
 410
 411         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 412
 413         pr->scroller_id = 0;
 414         pr->scroller_overlay = -1;
 415
 416         pr->x_mouse = -1;
 417         pr->y_mouse = -1;
 418
 419         pr->source_tiles_enabled = FALSE;
 420         pr->source_tiles = NULL;
 421
 422         pr->orientation = 1;
 423
 424         pr->norm_center_x = 0.5;
 425         pr->norm_center_y = 0.5;
 426
 427         pr->stereo_mode = PR_STEREO_NONE;
 428
 429         pr->renderer = pr_backend_renderer_new(pr);
 430
 431         pr->renderer2 = NULL;
 432
 433         gtk_widget_set_double_buffered(box, FALSE);
 434         gtk_widget_set_app_paintable(box, TRUE);
 435         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 436                                G_CALLBACK(pr_size_cb), pr);
 437
 438         pr_signals_connect(pr);
 439 }
 440
 441 static void pixbuf_renderer_finalize(GObject *object)
 442 {
 443         PixbufRenderer *pr;
 444
 445         pr = PIXBUF_RENDERER(object);
 446
 447         pr->renderer->free(pr->renderer);
 448         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 449
 450
 451         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 452
 453         pr_scroller_timer_set(pr, FALSE);
 454
 455         pr_source_tile_free_all(pr);
 456 }
 457
 458 PixbufRenderer *pixbuf_renderer_new(void)
 459 {
 460         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 461 }
 462
 463 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 464                                          const GValue *value, GParamSpec *pspec)
 465 {
 466         PixbufRenderer *pr;
 467
 468         pr = PIXBUF_RENDERER(object);
 469
 470         switch (prop_id)
 471                 {
 472                 case PROP_ZOOM_MIN:
 473                         pr->zoom_min = g_value_get_double(value);
 474                         break;
 475                 case PROP_ZOOM_MAX:
 476                         pr->zoom_max = g_value_get_double(value);
 477                         break;
 478                 case PROP_ZOOM_QUALITY:
 479                         pr->zoom_quality = g_value_get_uint(value);
 480                         break;
 481                 case PROP_ZOOM_2PASS:
 482                         pr->zoom_2pass = g_value_get_boolean(value);
 483                         break;
 484                 case PROP_ZOOM_EXPAND:
 485                         pr->zoom_expand = g_value_get_boolean(value);
 486                         break;
 487                 case PROP_SCROLL_RESET:
 488                         pr->scroll_reset = g_value_get_uint(value);
 489                         break;
 490                 case PROP_DELAY_FLIP:
 491                         pr->delay_flip = g_value_get_boolean(value);
 492                         break;
 493                 case PROP_LOADING:
 494                         pr->loading = g_value_get_boolean(value);
 495                         break;
 496                 case PROP_COMPLETE:
 497                         pr->complete = g_value_get_boolean(value);
 498                         break;
 499                 case PROP_CACHE_SIZE_DISPLAY:
 500 //                      pr->tile_cache_max = g_value_get_uint(value);
 501                         break;
 502                 case PROP_CACHE_SIZE_TILES:
 503                         pr->source_tiles_cache_size = g_value_get_uint(value);
 504                         break;
 505                 case PROP_WINDOW_FIT:
 506                         pr->window_fit = g_value_get_boolean(value);
 507                         break;
 508                 case PROP_WINDOW_LIMIT:
 509                         pr->window_limit = g_value_get_boolean(value);
 510                         break;
 511                 case PROP_WINDOW_LIMIT_VALUE:
 512                         pr->window_limit_size = g_value_get_uint(value);
 513                         break;
 514                 case PROP_AUTOFIT_LIMIT:
 515                         pr->autofit_limit = g_value_get_boolean(value);
 516                         break;
 517                 case PROP_AUTOFIT_LIMIT_VALUE:
 518                         pr->autofit_limit_size = g_value_get_uint(value);
 519                         break;
 520                 default:
 521                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 522                         break;
 523                 }
 524 }
 525
 526 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 527                                          GValue *value, GParamSpec *pspec)
 528 {
 529         PixbufRenderer *pr;
 530
 531         pr = PIXBUF_RENDERER(object);
 532
 533         switch (prop_id)
 534                 {
 535                 case PROP_ZOOM_MIN:
 536                         g_value_set_double(value, pr->zoom_min);
 537                         break;
 538                 case PROP_ZOOM_MAX:
 539                         g_value_set_double(value, pr->zoom_max);
 540                         break;
 541                 case PROP_ZOOM_QUALITY:
 542                         g_value_set_uint(value, pr->zoom_quality);
 543                         break;
 544                 case PROP_ZOOM_2PASS:
 545                         g_value_set_boolean(value, pr->zoom_2pass);
 546                         break;
 547                 case PROP_ZOOM_EXPAND:
 548                         g_value_set_boolean(value, pr->zoom_expand);
 549                         break;
 550                 case PROP_SCROLL_RESET:
 551                         g_value_set_uint(value, pr->scroll_reset);
 552                         break;
 553                 case PROP_DELAY_FLIP:
 554                         g_value_set_boolean(value, pr->delay_flip);
 555                         break;
 556                 case PROP_LOADING:
 557                         g_value_set_boolean(value, pr->loading);
 558                         break;
 559                 case PROP_COMPLETE:
 560                         g_value_set_boolean(value, pr->complete);
 561                         break;
 562                 case PROP_CACHE_SIZE_DISPLAY:
 563 //                      g_value_set_uint(value, pr->tile_cache_max);
 564                         break;
 565                 case PROP_CACHE_SIZE_TILES:
 566                         g_value_set_uint(value, pr->source_tiles_cache_size);
 567                         break;
 568                 case PROP_WINDOW_FIT:
 569                         g_value_set_boolean(value, pr->window_fit);
 570                         break;
 571                 case PROP_WINDOW_LIMIT:
 572                         g_value_set_boolean(value, pr->window_limit);
 573                         break;
 574                 case PROP_WINDOW_LIMIT_VALUE:
 575                         g_value_set_uint(value, pr->window_limit_size);
 576                         break;
 577                 case PROP_AUTOFIT_LIMIT:
 578                         g_value_set_boolean(value, pr->autofit_limit);
 579                         break;
 580                 case PROP_AUTOFIT_LIMIT_VALUE:
 581                         g_value_set_uint(value, pr->autofit_limit_size);
 582                         break;
 583                 default:
 584                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 585                         break;
 586                 }
 587 }
 588
 589
 590 /*
 591  *-------------------------------------------------------------------
 592  * misc utilities
 593  *-------------------------------------------------------------------
 594  */
 595
 596 static void widget_set_cursor(GtkWidget *widget, gint icon)
 597 {
 598         GdkCursor *cursor;
 599
 600         if (!gtk_widget_get_window(widget)) return;
 601
 602         if (icon == -1)
 603                 {
 604                 cursor = NULL;
 605                 }
 606         else
 607                 {
 608                 cursor = gdk_cursor_new(icon);
 609                 }
 610
 611         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 612
 613         if (cursor) gdk_cursor_unref(cursor);
 614 }
 615
 616 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 617                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 618                                gint *rx, gint *ry, gint *rw, gint *rh)
 619 {
 620         if (clip_x + clip_w <= x ||
 621             clip_x >= x + w ||
 622             clip_y + clip_h <= y ||
 623             clip_y >= y + h)
 624                 {
 625                 return FALSE;
 626                 }
 627
 628         *rx = MAX(x, clip_x);
 629         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 630
 631         *ry = MAX(y, clip_y);
 632         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 633
 634         return TRUE;
 635 }
 636
 637 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 638 {
 639         GdkWindowState state;
 640
 641         if (!pr->parent_window) return FALSE;
 642         if (!pr->window_fit) return FALSE;
 643         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 644
 645         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 646         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 647         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 648
 649         return TRUE;
 650 }
 651
 652 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 653 {
 654         GtkWidget *widget;
 655         GtkWidget *parent;
 656         gint ww, wh;
 657         GtkAllocation widget_allocation;
 658         GtkAllocation parent_allocation;
 659
 660         if (!pr_parent_window_sizable(pr)) return FALSE;
 661
 662         if (pr->window_limit)
 663                 {
 664                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 665                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 666
 667                 if (w > sw) w = sw;
 668                 if (h > sh) h = sh;
 669                 }
 670
 671         widget = GTK_WIDGET(pr);
 672         parent = GTK_WIDGET(pr->parent_window);
 673
 674         gtk_widget_get_allocation(widget, &widget_allocation);
 675         gtk_widget_get_allocation(parent, &parent_allocation);
 676
 677         w += (parent_allocation.width - widget_allocation.width);
 678         h += (parent_allocation.height - widget_allocation.height);
 679
 680         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 681         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 682         if (w == ww && h == wh) return FALSE;
 683
 684         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 685
 686         return TRUE;
 687 }
 688
 689 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 690 {
 691         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 692         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 693
 694         pr->parent_window = GTK_WIDGET(window);
 695 }
 696
 697 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 698 {
 699         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 700
 701         return GTK_WINDOW(pr->parent_window);
 702 }
 703
 704
 705 /*
 706  *-------------------------------------------------------------------
 707  * overlays
 708  *-------------------------------------------------------------------
 709  */
 710
 711
 712 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 713                                  OverlayRendererFlags flags)
 714 {
 715         /* let's assume both renderers returns the same value */
 716         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 717         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 718 }
 719
 720 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 721 {
 722         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 723         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 724 }
 725
 726 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 727 {
 728         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 729         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 730 }
 731
 732 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 733 {
 734         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 735         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 736 }
 737
 738 /*
 739  *-------------------------------------------------------------------
 740  * scroller overlay
 741  *-------------------------------------------------------------------
 742  */
 743
 744
 745 static gboolean pr_scroller_update_cb(gpointer data)
 746 {
 747         PixbufRenderer *pr = data;
 748         gint x, y;
 749         gint xinc, yinc;
 750
 751         /* this was a simple scroll by difference between scroller and mouse position,
 752          * but all this math results in a smoother result and accounts for a dead zone.
 753          */
 754
 755         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 756                 {
 757                 x = 0;
 758                 }
 759         else
 760                 {
 761                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 762                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 763                 x += (x > 0) ? -shift : shift;
 764                 }
 765
 766         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 767                 {
 768                 y = 0;
 769                 }
 770         else
 771                 {
 772                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 773                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 774                 y += (y > 0) ? -shift : shift;
 775                 }
 776
 777         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 778                 {
 779                 xinc = x;
 780                 }
 781         else
 782                 {
 783                 xinc = pr->scroller_xinc;
 784
 785                 if (x >= 0)
 786                         {
 787                         if (xinc < 0) xinc = 0;
 788                         if (x < xinc) xinc = x;
 789                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 790                         }
 791                 else
 792                         {
 793                         if (xinc > 0) xinc = 0;
 794                         if (x > xinc) xinc = x;
 795                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 796                         }
 797                 }
 798
 799         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 800                 {
 801                 yinc = y;
 802                 }
 803         else
 804                 {
 805                 yinc = pr->scroller_yinc;
 806
 807                 if (y >= 0)
 808                         {
 809                         if (yinc < 0) yinc = 0;
 810                         if (y < yinc) yinc = y;
 811                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 812                         }
 813                 else
 814                         {
 815                         if (yinc > 0) yinc = 0;
 816                         if (y > yinc) yinc = y;
 817                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 818                         }
 819                 }
 820
 821         pr->scroller_xinc = xinc;
 822         pr->scroller_yinc = yinc;
 823
 824         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 825         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 826
 827         pixbuf_renderer_scroll(pr, xinc, yinc);
 828
 829         return TRUE;
 830 }
 831
 832 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 833 {
 834         if (pr->scroller_id)
 835                 {
 836                 g_source_remove(pr->scroller_id);
 837                 pr->scroller_id = 0;
 838                 }
 839
 840         if (start)
 841                 {
 842                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 843                                                 pr_scroller_update_cb, pr);
 844                 }
 845 }
 846
 847 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 848 {
 849         if (pr->scroller_overlay == -1)
 850                 {
 851                 GdkPixbuf *pixbuf;
 852                 gint w, h;
 853
 854 #ifdef GQ_BUILD
 855                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 856 #else
 857                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 858                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 859 #endif
 860                 w = gdk_pixbuf_get_width(pixbuf);
 861                 h = gdk_pixbuf_get_height(pixbuf);
 862
 863                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 864                 g_object_unref(pixbuf);
 865                 }
 866
 867         pr->scroller_x = x;
 868         pr->scroller_y = y;
 869         pr->scroller_xpos = x;
 870         pr->scroller_ypos = y;
 871
 872         pr_scroller_timer_set(pr, TRUE);
 873 }
 874
 875 static void pr_scroller_stop(PixbufRenderer *pr)
 876 {
 877         if (!pr->scroller_id) return;
 878
 879         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 880         pr->scroller_overlay = -1;
 881
 882         pr_scroller_timer_set(pr, FALSE);
 883 }
 884
 885 /*
 886  *-------------------------------------------------------------------
 887  * borders
 888  *-------------------------------------------------------------------
 889  */
 890
 891 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 892 {
 893         GtkStyle *style;
 894         GtkWidget *widget;
 895
 896         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 897
 898         widget = GTK_WIDGET(pr);
 899
 900         if (color) {
 901                 GdkColor *slot;
 902
 903                 style = gtk_style_copy(gtk_widget_get_style(widget));
 904                 slot = &style->bg[GTK_STATE_NORMAL];
 905
 906                 slot->red = color->red;
 907                 slot->green = color->green;
 908                 slot->blue = color->blue;
 909                 }
 910         else {
 911                 style = gtk_style_copy(gtk_widget_get_default_style());
 912         }
 913
 914         gtk_widget_set_style(widget, style);
 915
 916         pr->renderer->update_viewport(pr->renderer);
 917         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 918 }
 919
 920 /*
 921  *-------------------------------------------------------------------
 922  * source tiles
 923  *-------------------------------------------------------------------
 924  */
 925
 926 static void pr_source_tile_free(SourceTile *st)
 927 {
 928         if (!st) return;
 929
 930         if (st->pixbuf) g_object_unref(st->pixbuf);
 931         g_free(st);
 932 }
 933
 934 static void pr_source_tile_free_all(PixbufRenderer *pr)
 935 {
 936         GList *work;
 937
 938         work = pr->source_tiles;
 939         while (work)
 940                 {
 941                 SourceTile *st;
 942
 943                 st = work->data;
 944                 work = work->next;
 945
 946                 pr_source_tile_free(st);
 947                 }
 948
 949         g_list_free(pr->source_tiles);
 950         pr->source_tiles = NULL;
 951 }
 952
 953 static void pr_source_tile_unset(PixbufRenderer *pr)
 954 {
 955         pr_source_tile_free_all(pr);
 956         pr->source_tiles_enabled = FALSE;
 957 }
 958
 959 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 960 {
 961         gint x1, y1, x2, y2;
 962
 963         if (!st) return FALSE;
 964
 965 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 966 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 967 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 968 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 969         x1 = pr->x_scroll;
 970         y1 = pr->y_scroll;
 971         x2 = pr->x_scroll + pr->vis_width;
 972         y2 = pr->y_scroll + pr->vis_height;
 973
 974         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
 975                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
 976                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
 977                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
 978 }
 979
 980 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
 981 {
 982         SourceTile *st = NULL;
 983         gint count;
 984
 985         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
 986
 987         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
 988
 989         count = g_list_length(pr->source_tiles);
 990         if (count >= pr->source_tiles_cache_size)
 991                 {
 992                 GList *work;
 993
 994                 work = g_list_last(pr->source_tiles);
 995                 while (work && count >= pr->source_tiles_cache_size)
 996                         {
 997                         SourceTile *needle;
 998
 999                         needle = work->data;
1000                         work = work->prev;
1001
1002                         if (!pr_source_tile_visible(pr, needle))
1003                                 {
1004                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1005
1006                                 if (pr->func_tile_dispose)
1007                                         {
1008                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1009                                                               pr->source_tile_width, pr->source_tile_height,
1010                                                               needle->pixbuf, pr->func_tile_data);
1011                                         }
1012
1013                                 if (!st)
1014                                         {
1015                                         st = needle;
1016                                         }
1017                                 else
1018                                         {
1019                                         pr_source_tile_free(needle);
1020                                         }
1021
1022                                 count--;
1023                                 }
1024                         }
1025                 }
1026
1027         if (!st)
1028                 {
1029                 st = g_new0(SourceTile, 1);
1030                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1031                                             pr->source_tile_width, pr->source_tile_height);
1032                 }
1033
1034         st->x = ROUND_DOWN(x, pr->source_tile_width);
1035         st->y = ROUND_DOWN(y, pr->source_tile_height);
1036         st->blank = TRUE;
1037
1038         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1039
1040         return st;
1041 }
1042
1043 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1044 {
1045         SourceTile *st;
1046
1047         st = pr_source_tile_new(pr, x, y);
1048         if (!st) return NULL;
1049
1050         if (pr->func_tile_request &&
1051             pr->func_tile_request(pr, st->x, st->y,
1052                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1053                 {
1054                 st->blank = FALSE;
1055                 }
1056
1057         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1058                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1059         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1060                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1061         return st;
1062 }
1063
1064 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1065 {
1066         GList *work;
1067
1068         work = pr->source_tiles;
1069         while (work)
1070                 {
1071                 SourceTile *st = work->data;
1072
1073                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1074                     y >= st->y && y < st->y + pr->source_tile_height)
1075                         {
1076                         if (work != pr->source_tiles)
1077                                 {
1078                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1079                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1080                                 }
1081                         return st;
1082                         }
1083
1084                 work = work->next;
1085                 }
1086
1087         return NULL;
1088 }
1089
1090 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1091 {
1092         gint x1, y1;
1093         GList *list = NULL;
1094         gint sx, sy;
1095
1096         if (x < 0) x = 0;
1097         if (y < 0) y = 0;
1098         if (w > pr->image_width) w = pr->image_width;
1099         if (h > pr->image_height) h = pr->image_height;
1100
1101         sx = ROUND_DOWN(x, pr->source_tile_width);
1102         sy = ROUND_DOWN(y, pr->source_tile_height);
1103
1104         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1105                 {
1106                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1107                         {
1108                         SourceTile *st;
1109
1110                         st = pr_source_tile_find(pr, x1, y1);
1111                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1112
1113                         if (st) list = g_list_prepend(list, st);
1114                         }
1115                 }
1116
1117         return g_list_reverse(list);
1118 }
1119
1120 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1121 {
1122         GList *work;
1123
1124         if (width < 1 || height < 1) return;
1125
1126         work = pr->source_tiles;
1127         while (work)
1128                 {
1129                 SourceTile *st;
1130                 gint rx, ry, rw, rh;
1131
1132                 st = work->data;
1133                 work = work->next;
1134
1135                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1136                                    x, y, width, height,
1137                                    &rx, &ry, &rw, &rh))
1138                         {
1139                         GdkPixbuf *pixbuf;
1140
1141                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1142                         if (pr->func_tile_request &&
1143                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1144                                 {
1145                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1146                                                               rw * pr->scale, rh * pr->scale);
1147                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1148                                                                 rw * pr->scale, rh * pr->scale);
1149                                 }
1150                         g_object_unref(pixbuf);
1151                         }
1152                 }
1153 }
1154
1155 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1156                                gint tile_width, gint tile_height, gint cache_size,
1157                                PixbufRendererTileRequestFunc func_request,
1158                                PixbufRendererTileDisposeFunc func_dispose,
1159                                gpointer user_data,
1160                                gdouble zoom)
1161 {
1162         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1163         g_return_if_fail(tile_width >= 32 && tile_width >= 32);
1164         g_return_if_fail(width >= 32 && height > 32);
1165         g_return_if_fail(func_request != NULL);
1166
1167         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1168         pr->pixbuf = NULL;
1169
1170         pr_source_tile_unset(pr);
1171
1172         if (cache_size < 4) cache_size = 4;
1173
1174         pr->source_tiles_enabled = TRUE;
1175         pr->source_tiles_cache_size = cache_size;
1176         pr->source_tile_width = tile_width;
1177         pr->source_tile_height = tile_height;
1178
1179         pr->image_width = width;
1180         pr->image_height = height;
1181
1182         pr->func_tile_request = func_request;
1183         pr->func_tile_dispose = func_dispose;
1184         pr->func_tile_data = user_data;
1185
1186         pr_stereo_temp_disable(pr, TRUE);
1187         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1188 }
1189
1190 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1191 {
1192         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1193         g_return_if_fail(width >= 32 && height > 32);
1194
1195         if (!pr->source_tiles_enabled) return;
1196         if (pr->image_width == width && pr->image_height == height) return;
1197
1198         pr->image_width = width;
1199         pr->image_height = height;
1200
1201         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1202 }
1203
1204 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1205 {
1206         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1207
1208         return pr->source_tiles_enabled;
1209 }
1210
1211 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1212                                 PrZoomFlags flags, gint x, gint y)
1213 {
1214         gdouble zoom = pr->zoom;
1215
1216         if (increment == 0.0) return;
1217
1218         if (zoom == 0.0)
1219                 {
1220                 if (pr->scale < 1.0)
1221                         {
1222                         zoom = 0.0 - 1.0 / pr->scale;
1223                         }
1224                 else
1225                         {
1226                         zoom = pr->scale;
1227                         }
1228                 }
1229
1230         if (increment < 0.0)
1231                 {
1232                 if (zoom >= 1.0 && zoom + increment < 1.0)
1233                         {
1234                         zoom = zoom + increment - 2.0;
1235                         }
1236                 else
1237                         {
1238                         zoom = zoom + increment;
1239                         }
1240                 }
1241         else
1242                 {
1243                 if (zoom <= -1.0 && zoom + increment > -1.0)
1244                         {
1245                         zoom = zoom + increment + 2.0;
1246                         }
1247                 else
1248                         {
1249                         zoom = zoom + increment;
1250                         }
1251                 }
1252
1253         pr_zoom_sync(pr, zoom, flags, x, y);
1254 }
1255
1256
1257 /*
1258  *-------------------------------------------------------------------
1259  * signal emission
1260  *-------------------------------------------------------------------
1261  */
1262
1263 static void pr_update_signal(PixbufRenderer *pr)
1264 {
1265         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1266         pr->debug_updated = TRUE;
1267 }
1268
1269 static void pr_zoom_signal(PixbufRenderer *pr)
1270 {
1271         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1272 }
1273
1274 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1275 {
1276         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1277 }
1278
1279 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1280 {
1281         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1282 }
1283
1284 void pr_render_complete_signal(PixbufRenderer *pr)
1285 {
1286         if (!pr->complete)
1287                 {
1288                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1289                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1290                 }
1291         if (pr->debug_updated)
1292                 {
1293                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1294                 pr->debug_updated = FALSE;
1295                 }
1296 }
1297
1298 static void pr_drag_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1299 {
1300         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, bevent);
1301 }
1302
1303 static void pr_update_pixel_signal(PixbufRenderer *pr)
1304 {
1305         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1306 }
1307
1308 /*
1309  *-------------------------------------------------------------------
1310  * sync and clamp
1311  *-------------------------------------------------------------------
1312  */
1313
1314
1315 void pr_tile_coords_map_orientation(gint orientation,
1316                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1317                                      gdouble image_w, gdouble image_h,
1318                                      gdouble tile_w, gdouble tile_h,
1319                                      gdouble *res_x, gdouble *res_y)
1320 {
1321         *res_x = tile_x;
1322         *res_y = tile_y;
1323         switch (orientation)
1324                 {
1325                 case EXIF_ORIENTATION_TOP_LEFT:
1326                         /* normal -- nothing to do */
1327                         break;
1328                 case EXIF_ORIENTATION_TOP_RIGHT:
1329                         /* mirrored */
1330                         *res_x = image_w - tile_x - tile_w;
1331                         break;
1332                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1333                         /* upside down */
1334                         *res_x = image_w - tile_x - tile_w;
1335                         *res_y = image_h - tile_y - tile_h;
1336                         break;
1337                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1338                         /* flipped */
1339                         *res_y = image_h - tile_y - tile_h;
1340                         break;
1341                 case EXIF_ORIENTATION_LEFT_TOP:
1342                         *res_x = tile_y;
1343                         *res_y = tile_x;
1344                         break;
1345                 case EXIF_ORIENTATION_RIGHT_TOP:
1346                         /* rotated -90 (270) */
1347                         *res_x = tile_y;
1348                         *res_y = image_w - tile_x - tile_w;
1349                         break;
1350                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1351                         *res_x = image_h - tile_y - tile_h;
1352                         *res_y = image_w - tile_x - tile_w;
1353                         break;
1354                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1355                         /* rotated 90 */
1356                         *res_x = image_h - tile_y - tile_h;
1357                         *res_y = tile_x;
1358                         break;
1359                 default:
1360                         /* The other values are out of range */
1361                         break;
1362                 }
1363 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1364 }
1365
1366 void pr_tile_region_map_orientation(gint orientation,
1367                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1368                                      gint tile_w, gint tile_h,
1369                                      gint area_w, gint area_h,
1370                                      gint *res_x, gint *res_y,
1371                                      gint *res_w, gint *res_h)
1372 {
1373         *res_x = area_x;
1374         *res_y = area_y;
1375         *res_w = area_w;
1376         *res_h = area_h;
1377
1378         switch (orientation)
1379                 {
1380                 case EXIF_ORIENTATION_TOP_LEFT:
1381                         /* normal -- nothing to do */
1382                         break;
1383                 case EXIF_ORIENTATION_TOP_RIGHT:
1384                         /* mirrored */
1385                         *res_x = tile_w - area_x - area_w;
1386                         break;
1387                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1388                         /* upside down */
1389                         *res_x = tile_w - area_x - area_w;
1390                         *res_y = tile_h - area_y - area_h;
1391                         break;
1392                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1393                         /* flipped */
1394                         *res_y = tile_h - area_y - area_h;
1395                         break;
1396                 case EXIF_ORIENTATION_LEFT_TOP:
1397                         *res_x = area_y;
1398                         *res_y = area_x;
1399                         *res_w = area_h;
1400                         *res_h = area_w;
1401                         break;
1402                 case EXIF_ORIENTATION_RIGHT_TOP:
1403                         /* rotated -90 (270) */
1404                         *res_x = area_y;
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_RIGHT_BOTTOM:
1410                         *res_x = tile_h - area_y - area_h;
1411                         *res_y = tile_w - area_x - area_w;
1412                         *res_w = area_h;
1413                         *res_h = area_w;
1414                         break;
1415                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1416                         /* rotated 90 */
1417                         *res_x = tile_h - area_y - area_h;
1418                         *res_y = area_x;
1419                         *res_w = area_h;
1420                         *res_h = area_w;
1421                         break;
1422                 default:
1423                         /* The other values are out of range */
1424                         break;
1425                 }
1426 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1427 }
1428
1429 void pr_coords_map_orientation_reverse(gint orientation,
1430                                      gint area_x, gint area_y,
1431                                      gint tile_w, gint tile_h,
1432                                      gint area_w, gint area_h,
1433                                      gint *res_x, gint *res_y,
1434                                      gint *res_w, gint *res_h)
1435 {
1436         *res_x = area_x;
1437         *res_y = area_y;
1438         *res_w = area_w;
1439         *res_h = area_h;
1440
1441         switch (orientation)
1442                 {
1443                 case EXIF_ORIENTATION_TOP_LEFT:
1444                         /* normal -- nothing to do */
1445                         break;
1446                 case EXIF_ORIENTATION_TOP_RIGHT:
1447                         /* mirrored */
1448                         *res_x = tile_w - area_x - area_w;
1449                         break;
1450                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1451                         /* upside down */
1452                         *res_x = tile_w - area_x - area_w;
1453                         *res_y = tile_h - area_y - area_h;
1454                         break;
1455                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1456                         /* flipped */
1457                         *res_y = tile_h - area_y - area_h;
1458                         break;
1459                 case EXIF_ORIENTATION_LEFT_TOP:
1460                         *res_x = area_y;
1461                         *res_y = area_x;
1462                         *res_w = area_h;
1463                         *res_h = area_w;
1464                         break;
1465                 case EXIF_ORIENTATION_RIGHT_TOP:
1466                         /* rotated -90 (270) */
1467                         *res_x = tile_w - area_y - area_h;
1468                         *res_y = area_x;
1469                         *res_w = area_h;
1470                         *res_h = area_w;
1471                         break;
1472                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1473                         *res_x = tile_w - area_y - area_h;
1474                         *res_y = tile_h - area_x - area_w;
1475                         *res_w = area_h;
1476                         *res_h = area_w;
1477                         break;
1478                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1479                         /* rotated 90 */
1480                         *res_x = area_y;
1481                         *res_y = tile_h - area_x - area_w;
1482                         *res_w = area_h;
1483                         *res_h = area_w;
1484                         break;
1485                 default:
1486                         /* The other values are out of range */
1487                         break;
1488                 }
1489 }
1490
1491
1492
1493 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1494 {
1495         gint src_x, src_y;
1496         if (!pr->width || !pr->height) return;
1497
1498         /*
1499          * Update norm_center only if the image is bigger than the window.
1500          * With this condition the stored center survives also a temporary display
1501          * of the "broken image" icon.
1502         */
1503
1504         if (pr->width > pr->viewport_width)
1505                 {
1506                 src_x = pr->x_scroll + pr->vis_width / 2;
1507                 pr->norm_center_x = (gdouble)src_x / pr->width;
1508                 }
1509
1510         if (pr->height > pr->viewport_height)
1511                 {
1512                 src_y = pr->y_scroll + pr->vis_height / 2;
1513                 pr->norm_center_y = (gdouble)src_y / pr->height;
1514                 }
1515 }
1516
1517
1518 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1519 {
1520         gint old_xs;
1521         gint old_ys;
1522
1523         if (pr->zoom == 0.0)
1524                 {
1525                 pr->x_scroll = 0;
1526                 pr->y_scroll = 0;
1527
1528                 return FALSE;
1529                 }
1530
1531         old_xs = pr->x_scroll;
1532         old_ys = pr->y_scroll;
1533
1534         if (pr->x_offset > 0)
1535                 {
1536                 pr->x_scroll = 0;
1537                 }
1538         else
1539                 {
1540                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1541                 }
1542
1543         if (pr->y_offset > 0)
1544                 {
1545                 pr->y_scroll = 0;
1546                 }
1547         else
1548                 {
1549                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1550                 }
1551
1552         pixbuf_renderer_sync_scroll_center(pr);
1553
1554         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1555 }
1556
1557 static gboolean pr_size_clamp(PixbufRenderer *pr)
1558 {
1559         gint old_vw, old_vh;
1560
1561         old_vw = pr->vis_width;
1562         old_vh = pr->vis_height;
1563
1564         if (pr->width < pr->viewport_width)
1565                 {
1566                 pr->vis_width = pr->width;
1567                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1568                 }
1569         else
1570                 {
1571                 pr->vis_width = pr->viewport_width;
1572                 pr->x_offset = 0;
1573                 }
1574
1575         if (pr->height < pr->viewport_height)
1576                 {
1577                 pr->vis_height = pr->height;
1578                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1579                 }
1580         else
1581                 {
1582                 pr->vis_height = pr->viewport_height;
1583                 pr->y_offset = 0;
1584                 }
1585
1586         pixbuf_renderer_sync_scroll_center(pr);
1587
1588         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1589 }
1590
1591 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1592                               PrZoomFlags flags)
1593 {
1594         gint w, h;
1595         gdouble scale;
1596         gboolean force = !!(flags & PR_ZOOM_FORCE);
1597         gboolean new = !!(flags & PR_ZOOM_NEW);
1598
1599         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1600
1601         if (pr->zoom == zoom && !force) return FALSE;
1602
1603         w = pr->image_width;
1604         h = pr->image_height;
1605
1606         if (zoom == 0.0 && !pr->pixbuf)
1607                 {
1608                 scale = 1.0;
1609                 }
1610         else if (zoom == 0.0)
1611                 {
1612                 gint max_w;
1613                 gint max_h;
1614                 gboolean sizeable;
1615
1616                 sizeable = (new && pr_parent_window_sizable(pr));
1617
1618                 if (sizeable)
1619                         {
1620                         max_w = gdk_screen_width();
1621                         max_h = gdk_screen_height();
1622
1623                         if (pr->window_limit)
1624                                 {
1625                                 max_w = max_w * pr->window_limit_size / 100;
1626                                 max_h = max_h * pr->window_limit_size / 100;
1627                                 }
1628                         }
1629                 else
1630                         {
1631                         max_w = pr->viewport_width;
1632                         max_h = pr->viewport_height;
1633                         }
1634
1635                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1636                         {
1637                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1638                                 {
1639                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1640                                 h = max_h;
1641                                 w = w * scale + 0.5;
1642                                 if (w > max_w) w = max_w;
1643                                 }
1644                         else
1645                                 {
1646                                 scale = (gdouble)max_w / w;
1647                                 w = max_w;
1648                                 h = h * scale * pr->aspect_ratio + 0.5;
1649                                 if (h > max_h) h = max_h;
1650                                 }
1651
1652                         if (pr->autofit_limit)
1653                                 {
1654                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1655                                 w = w * factor + 0.5;
1656                                 h = h * factor + 0.5;
1657                                 scale = scale * factor;
1658                                 }
1659
1660                         if (w < 1) w = 1;
1661                         if (h < 1) h = 1;
1662                         }
1663                 else
1664                         {
1665                         scale = 1.0;
1666                         }
1667                 }
1668         else if (zoom > 0.0) /* zoom orig, in */
1669                 {
1670                 scale = zoom;
1671                 w = w * scale;
1672                 h = h * scale * pr->aspect_ratio;
1673                 }
1674         else /* zoom out */
1675                 {
1676                 scale = 1.0 / (0.0 - zoom);
1677                 w = w * scale;
1678                 h = h * scale * pr->aspect_ratio;
1679                 }
1680
1681         pr->zoom = zoom;
1682         pr->width = w;
1683         pr->height = h;
1684         pr->scale = scale;
1685
1686         return TRUE;
1687 }
1688
1689 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1690                          PrZoomFlags flags, gint px, gint py)
1691 {
1692         gdouble old_scale;
1693         gint old_cx, old_cy;
1694         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1695         gboolean force = !!(flags & PR_ZOOM_FORCE);
1696         gboolean new = !!(flags & PR_ZOOM_NEW);
1697         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1698         PrZoomFlags clamp_flags = flags;
1699         gdouble old_center_x = pr->norm_center_x;
1700         gdouble old_center_y = pr->norm_center_y;
1701
1702         old_scale = pr->scale;
1703         if (center_point)
1704                 {
1705                 px = CLAMP(px, 0, pr->width);
1706                 py = CLAMP(py, 0, pr->height);
1707                 old_cx = pr->x_scroll + (px - pr->x_offset);
1708                 old_cy = pr->y_scroll + (py - pr->y_offset);
1709                 }
1710         else
1711                 {
1712                 px = py = 0;
1713                 old_cx = pr->x_scroll + pr->vis_width / 2;
1714                 old_cy = pr->y_scroll + pr->vis_height / 2;
1715                 }
1716
1717         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1718         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1719
1720         (void) pr_size_clamp(pr);
1721         (void) pr_parent_window_resize(pr, pr->width, pr->height);
1722
1723         if (force && new)
1724                 {
1725                 switch (pr->scroll_reset)
1726                         {
1727                         case PR_SCROLL_RESET_NOCHANGE:
1728                                 /* maintain old scroll position */
1729                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1730                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1731                                 break;
1732                         case PR_SCROLL_RESET_CENTER:
1733                                 /* center new image */
1734                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1735                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1736                                 break;
1737                         case PR_SCROLL_RESET_TOPLEFT:
1738                         default:
1739                                 /* reset to upper left */
1740                                 pr->x_scroll = 0;
1741                                 pr->y_scroll = 0;
1742                                 break;
1743                         }
1744                 }
1745         else
1746                 {
1747                 /* user zoom does not force, so keep visible center point */
1748                 if (center_point)
1749                         {
1750                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1751                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1752                         }
1753                 else
1754                         {
1755                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1756                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1757                         }
1758                 }
1759
1760         pr_scroll_clamp(pr);
1761
1762         pr->renderer->update_zoom(pr->renderer, lazy);
1763         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1764
1765         pr_scroll_notify_signal(pr);
1766         pr_zoom_signal(pr);
1767         pr_update_signal(pr);
1768 }
1769
1770 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1771 {
1772         gboolean zoom_changed = FALSE;
1773
1774         gint new_viewport_width = new_width;
1775         gint new_viewport_height = new_height;
1776
1777         if (!pr->stereo_temp_disable)
1778                 {
1779                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1780                         {
1781                         new_viewport_width = new_width / 2;
1782                         }
1783                 else if (pr->stereo_mode & PR_STEREO_VERT)
1784                         {
1785                         new_viewport_height = new_height / 2;
1786                         }
1787                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1788                         {
1789                         new_viewport_width = pr->stereo_fixed_width;
1790                         new_viewport_height = pr->stereo_fixed_height;
1791                         }
1792                 }
1793
1794         if (pr->window_width == new_width && pr->window_height == new_height &&
1795             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1796
1797         pr->window_width = new_width;
1798         pr->window_height = new_height;
1799         pr->viewport_width = new_viewport_width;
1800         pr->viewport_height = new_viewport_height;
1801
1802         if (pr->zoom == 0.0)
1803                 {
1804                 gdouble old_scale = pr->scale;
1805                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1806                 zoom_changed = (old_scale != pr->scale);
1807                 }
1808
1809         pr_size_clamp(pr);
1810         pr_scroll_clamp(pr);
1811
1812         if (zoom_changed)
1813                 {
1814                 pr->renderer->update_zoom(pr->renderer, FALSE);
1815                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1816                 }
1817
1818         pr->renderer->update_viewport(pr->renderer);
1819         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1820
1821
1822         /* ensure scroller remains visible */
1823         if (pr->scroller_overlay != -1)
1824                 {
1825                 gboolean update = FALSE;
1826
1827                 if (pr->scroller_x > new_width)
1828                         {
1829                         pr->scroller_x = new_width;
1830                         pr->scroller_xpos = new_width;
1831                         update = TRUE;
1832                         }
1833                 if (pr->scroller_y > new_height)
1834                         {
1835                         pr->scroller_y = new_height;
1836                         pr->scroller_ypos = new_height;
1837                         update = TRUE;
1838                         }
1839
1840                 if (update)
1841                         {
1842                         GdkPixbuf *pixbuf;
1843
1844                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1845                                 {
1846                                 gint w, h;
1847
1848                                 w = gdk_pixbuf_get_width(pixbuf);
1849                                 h = gdk_pixbuf_get_height(pixbuf);
1850                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1851                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1852                                 }
1853                         }
1854                 }
1855
1856         pr_scroll_notify_signal(pr);
1857         if (zoom_changed) pr_zoom_signal(pr);
1858         pr_update_signal(pr);
1859 }
1860
1861 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1862 {
1863         PixbufRenderer *pr = data;
1864
1865         pr_size_sync(pr, allocation->width, allocation->height);
1866 }
1867
1868 /*
1869  *-------------------------------------------------------------------
1870  * scrolling
1871  *-------------------------------------------------------------------
1872  */
1873
1874 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1875 {
1876         gint old_x, old_y;
1877         gint x_off, y_off;
1878
1879         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1880
1881         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1882
1883         old_x = pr->x_scroll;
1884         old_y = pr->y_scroll;
1885
1886         pr->x_scroll += x;
1887         pr->y_scroll += y;
1888
1889         pr_scroll_clamp(pr);
1890
1891         pixbuf_renderer_sync_scroll_center(pr);
1892
1893         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1894
1895         pr_scroll_notify_signal(pr);
1896
1897         x_off = pr->x_scroll - old_x;
1898         y_off = pr->y_scroll - old_y;
1899
1900         pr->renderer->scroll(pr->renderer, x_off, y_off);
1901         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1902 }
1903
1904 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1905                                      gdouble x_align, gdouble y_align)
1906 {
1907         gint px, py;
1908         gint ax, ay;
1909
1910         x_align = CLAMP(x_align, 0.0, 1.0);
1911         y_align = CLAMP(y_align, 0.0, 1.0);
1912
1913         ax = (gdouble)pr->vis_width * x_align;
1914         ay = (gdouble)pr->vis_height * y_align;
1915
1916         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1917         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1918
1919         pixbuf_renderer_scroll(pr, px, py);
1920 }
1921
1922 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1923
1924 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1925 {
1926         *x = pr->norm_center_x;
1927         *y = pr->norm_center_y;
1928 }
1929
1930 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1931 {
1932         gdouble dst_x, dst_y;
1933
1934         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1935         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1936
1937         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1938         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1939
1940         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1941 }
1942
1943 /*
1944  *-------------------------------------------------------------------
1945  * mouse
1946  *-------------------------------------------------------------------
1947  */
1948
1949 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
1950 {
1951         PixbufRenderer *pr;
1952         gint accel;
1953
1954         /* This is a hack, but work far the best, at least for single pointer systems.
1955          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
1956         gint x, y;
1957         gdk_window_get_pointer (bevent->window, &x, &y, NULL);
1958         bevent->x = x;
1959         bevent->y = y;
1960
1961         pr = PIXBUF_RENDERER(widget);
1962
1963         if (pr->scroller_id)
1964                 {
1965                 pr->scroller_xpos = bevent->x;
1966                 pr->scroller_ypos = bevent->y;
1967                 }
1968
1969         pr->x_mouse = bevent->x;
1970         pr->y_mouse = bevent->y;
1971         pr_update_pixel_signal(pr);
1972
1973         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
1974
1975         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
1976                 {
1977                 pr->drag_moved++;
1978                 }
1979         else
1980                 {
1981                 widget_set_cursor(widget, GDK_FLEUR);
1982                 }
1983
1984         if (bevent->state & GDK_CONTROL_MASK)
1985                 {
1986                 accel = PR_PAN_SHIFT_MULTIPLIER;
1987                 }
1988         else
1989                 {
1990                 accel = 1;
1991                 }
1992
1993         /* do the scroll */
1994         pixbuf_renderer_scroll(pr, (pr->drag_last_x - bevent->x) * accel,
1995                                (pr->drag_last_y - bevent->y) * accel);
1996
1997         pr_drag_signal(pr, bevent);
1998
1999         pr->drag_last_x = bevent->x;
2000         pr->drag_last_y = bevent->y;
2001
2002         /* This is recommended by the GTK+ documentation, but does not work properly.
2003          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2004          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2005          */
2006         /* gdk_event_request_motions (bevent); */
2007         return FALSE;
2008 }
2009
2010 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2011 {
2012         PixbufRenderer *pr;
2013
2014         pr = PIXBUF_RENDERER(widget);
2015         pr->x_mouse = -1;
2016         pr->y_mouse = -1;
2017
2018         pr_update_pixel_signal(pr);
2019         return FALSE;
2020 }
2021
2022 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2023 {
2024         PixbufRenderer *pr;
2025         GtkWidget *parent;
2026
2027         pr = PIXBUF_RENDERER(widget);
2028
2029         if (pr->scroller_id) return TRUE;
2030
2031         switch (bevent->button)
2032                 {
2033                 case MOUSE_BUTTON_LEFT:
2034                         pr->in_drag = TRUE;
2035                         pr->drag_last_x = bevent->x;
2036                         pr->drag_last_y = bevent->y;
2037                         pr->drag_moved = 0;
2038                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2039                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2040                                          NULL, NULL, bevent->time);
2041                         gtk_grab_add(widget);
2042                         break;
2043                 case MOUSE_BUTTON_MIDDLE:
2044                         pr->drag_moved = 0;
2045                         break;
2046                 case MOUSE_BUTTON_RIGHT:
2047                         pr_clicked_signal(pr, bevent);
2048                         break;
2049                 default:
2050                         break;
2051                 }
2052
2053         parent = gtk_widget_get_parent(widget);
2054         if (widget && gtk_widget_get_can_focus(parent))
2055                 {
2056                 gtk_widget_grab_focus(parent);
2057                 }
2058
2059         return FALSE;
2060 }
2061
2062 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2063 {
2064         PixbufRenderer *pr;
2065
2066         pr = PIXBUF_RENDERER(widget);
2067
2068         if (pr->scroller_id)
2069                 {
2070                 pr_scroller_stop(pr);
2071                 return TRUE;
2072                 }
2073
2074         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2075                 {
2076                 gtk_grab_remove(widget);
2077                 gdk_pointer_ungrab(bevent->time);
2078                 widget_set_cursor(widget, -1);
2079                 }
2080
2081         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2082                 {
2083                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2084                         {
2085                         pr_scroller_start(pr, bevent->x, bevent->y);
2086                         }
2087                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2088                         {
2089                         pr_clicked_signal(pr, bevent);
2090                         }
2091                 }
2092
2093         pr->in_drag = FALSE;
2094
2095         return FALSE;
2096 }
2097
2098 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2099 {
2100         PixbufRenderer *pr;
2101
2102         pr = PIXBUF_RENDERER(widget);
2103
2104         if (pr->scroller_id)
2105                 {
2106                 pr->scroller_xpos = pr->scroller_x;
2107                 pr->scroller_ypos = pr->scroller_y;
2108                 pr->scroller_xinc = 0;
2109                 pr->scroller_yinc = 0;
2110                 }
2111
2112         return FALSE;
2113 }
2114
2115 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2116 {
2117         PixbufRenderer *pr;
2118
2119         pr = PIXBUF_RENDERER(widget);
2120
2121         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2122 }
2123
2124 static void pr_signals_connect(PixbufRenderer *pr)
2125 {
2126         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2127                          G_CALLBACK(pr_mouse_motion_cb), pr);
2128         g_signal_connect(G_OBJECT(pr), "button_press_event",
2129                          G_CALLBACK(pr_mouse_press_cb), pr);
2130         g_signal_connect(G_OBJECT(pr), "button_release_event",
2131                          G_CALLBACK(pr_mouse_release_cb), pr);
2132         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2133                          G_CALLBACK(pr_mouse_leave_cb), pr);
2134         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2135                          G_CALLBACK(pr_leave_notify_cb), pr);
2136
2137         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2138                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
2139                                               GDK_LEAVE_NOTIFY_MASK);
2140
2141         g_signal_connect(G_OBJECT(pr), "drag_begin",
2142                          G_CALLBACK(pr_mouse_drag_cb), pr);
2143
2144 }
2145
2146 /*
2147  *-------------------------------------------------------------------
2148  * stereo support
2149  *-------------------------------------------------------------------
2150  */
2151
2152 #define COLOR_BYTES 3   /* rgb */
2153 static void pr_create_anaglyph_RC(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2154 {
2155         gint srs, drs;
2156         guchar *s_pix, *d_pix;
2157         guchar *sp, *dp;
2158         guchar *spi, *dpi;
2159         gint i, j;
2160
2161         srs = gdk_pixbuf_get_rowstride(right);
2162         s_pix = gdk_pixbuf_get_pixels(right);
2163         spi = s_pix + (x * COLOR_BYTES);
2164
2165         drs = gdk_pixbuf_get_rowstride(pixbuf);
2166         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2167         dpi =  d_pix + x * COLOR_BYTES;
2168
2169         for (i = y; i < y + h; i++)
2170                 {
2171                 sp = spi + (i * srs);
2172                 dp = dpi + (i * drs);
2173                 for (j = 0; j < w; j++)
2174                         {
2175                         *dp = *sp; /* copy red channel */
2176                         sp += COLOR_BYTES;
2177                         dp += COLOR_BYTES;
2178                         }
2179                 }
2180 }
2181
2182 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2183 {
2184         gint srs, drs;
2185         guchar *s_pix, *d_pix;
2186         guchar *sp, *dp;
2187         guchar *spi, *dpi;
2188         gint i, j;
2189         const double gc[3] = {0.299, 0.587, 0.114};
2190
2191         srs = gdk_pixbuf_get_rowstride(right);
2192         s_pix = gdk_pixbuf_get_pixels(right);
2193         spi = s_pix + (x * COLOR_BYTES);
2194
2195         drs = gdk_pixbuf_get_rowstride(pixbuf);
2196         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2197         dpi =  d_pix + x * COLOR_BYTES;
2198
2199         for (i = y; i < y + h; i++)
2200                 {
2201                 sp = spi + (i * srs);
2202                 dp = dpi + (i * drs);
2203                 for (j = 0; j < w; j++)
2204                         {
2205                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2206                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2207                         dp[0] = g2; /* red channel from sp */
2208                         dp[1] = g1; /* green and blue from dp */
2209                         dp[2] = g1;
2210                         sp += COLOR_BYTES;
2211                         dp += COLOR_BYTES;
2212                         }
2213                 }
2214 }
2215
2216 const double pr_dubois_matrix[3][6] = {
2217         { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2218         {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2219         {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}
2220         };
2221
2222 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2223 {
2224         gint srs, drs;
2225         guchar *s_pix, *d_pix;
2226         guchar *sp, *dp;
2227         guchar *spi, *dpi;
2228         gint i, j, k;
2229
2230         srs = gdk_pixbuf_get_rowstride(right);
2231         s_pix = gdk_pixbuf_get_pixels(right);
2232         spi = s_pix + (x * COLOR_BYTES);
2233
2234         drs = gdk_pixbuf_get_rowstride(pixbuf);
2235         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2236         dpi =  d_pix + x * COLOR_BYTES;
2237
2238         for (i = y; i < y + h; i++)
2239                 {
2240                 sp = spi + (i * srs);
2241                 dp = dpi + (i * drs);
2242                 for (j = 0; j < w; j++)
2243                         {
2244                         double res[3];
2245                         for (k = 0; k < 3; k++)
2246                                 {
2247                                 const double *m = pr_dubois_matrix[k];
2248                                 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];
2249                                 if (res[k] < 0.0) res[k] = 0;
2250                                 if (res[k] > 255.0) res[k] = 255.0;
2251                                 }
2252                         dp[0] = res[0];
2253                         dp[1] = res[1];
2254                         dp[2] = res[2];
2255                         sp += COLOR_BYTES;
2256                         dp += COLOR_BYTES;
2257                         }
2258                 }
2259 }
2260
2261 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2262 {
2263         if (mode & PR_STEREO_ANAGLYPH_RC)
2264                 pr_create_anaglyph_RC(pixbuf, right, x, y, w, h);
2265         else if (mode & PR_STEREO_ANAGLYPH_GRAY)
2266                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h);
2267         else if (mode & PR_STEREO_ANAGLYPH_DB)
2268                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h);
2269 }
2270
2271 /*
2272  *-------------------------------------------------------------------
2273  * public
2274  *-------------------------------------------------------------------
2275  */
2276 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2277 {
2278         pr->stereo_pixbuf_offset_left = 0;
2279         pr->stereo_pixbuf_offset_right = 0;
2280         if (!pr->pixbuf) return;
2281         switch (pr->orientation)
2282                 {
2283                 case EXIF_ORIENTATION_LEFT_TOP:
2284                 case EXIF_ORIENTATION_RIGHT_TOP:
2285                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2286                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2287                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2288                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2289                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2290                                 {
2291                                 pr->image_height /= 2;
2292                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2293                                 }
2294                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2295                                 {
2296                                 pr->image_height /= 2;
2297                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2298                                 }
2299
2300                         break;
2301                 default:
2302                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2303                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2304                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2305                                 {
2306                                 pr->image_width /= 2;
2307                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2308                                 }
2309                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2310                                 {
2311                                 pr->image_width /= 2;
2312                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2313                                 }
2314                 }
2315 }
2316
2317 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2318 {
2319         if (pixbuf) g_object_ref(pixbuf);
2320         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2321         pr->pixbuf = pixbuf;
2322
2323         if (!pr->pixbuf)
2324                 {
2325                 /* no pixbuf so just clear the window */
2326                 pr->image_width = 0;
2327                 pr->image_height = 0;
2328                 pr->scale = 1.0;
2329                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2330                                     and used for pixbuf_renderer_zoom_get */
2331
2332                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2333                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2334
2335                 pr_update_signal(pr);
2336
2337                 return;
2338                 }
2339
2340         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2341                 {
2342                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2343                 pr_stereo_temp_disable(pr, disable);
2344                 }
2345
2346         pr_pixbuf_size_sync(pr);
2347         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2348         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2349         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2350 }
2351
2352 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2353 {
2354         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2355
2356         pr_source_tile_unset(pr);
2357
2358         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2359
2360         pr_update_signal(pr);
2361 }
2362
2363 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2364 {
2365         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2366
2367         pr_source_tile_unset(pr);
2368
2369         pr->orientation = orientation;
2370         pr->stereo_data = stereo_data;
2371         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2372
2373         pr_update_signal(pr);
2374 }
2375
2376 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2377 {
2378         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2379
2380         return pr->pixbuf;
2381 }
2382
2383 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2384 {
2385         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2386
2387         pr->orientation = orientation;
2388
2389         pr_pixbuf_size_sync(pr);
2390         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2391 }
2392
2393 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2394 {
2395         if (!pr) return 1;
2396         return pr->orientation;
2397 }
2398
2399 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2400 {
2401         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2402         if (pr->stereo_data == stereo_data) return;
2403
2404
2405         pr->stereo_data = stereo_data;
2406
2407         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2408                 {
2409                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2410                 pr_stereo_temp_disable(pr, disable);
2411                 }
2412         pr_pixbuf_size_sync(pr);
2413         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2414         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2415         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2416 }
2417
2418 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2419 {
2420         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2421
2422         pr->func_post_process = func;
2423         pr->post_process_user_data = user_data;
2424         pr->post_process_slow = func && slow;
2425
2426 }
2427
2428
2429 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2430 {
2431         GObject *object;
2432         PixbufRendererScrollResetType scroll_reset;
2433
2434         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2435         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2436
2437         if (pr == source) return;
2438
2439         object = G_OBJECT(pr);
2440
2441         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2442         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2443         g_object_set(object, "loading", source->loading, NULL);
2444
2445         pr->complete = source->complete;
2446
2447         pr->x_scroll = source->x_scroll;
2448         pr->y_scroll = source->y_scroll;
2449         pr->x_mouse  = source->x_mouse;
2450         pr->y_mouse  = source->y_mouse;
2451
2452         scroll_reset = pr->scroll_reset;
2453         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2454
2455         pr->func_post_process = source->func_post_process;
2456         pr->post_process_user_data = source->post_process_user_data;
2457         pr->post_process_slow = source->post_process_slow;
2458         pr->orientation = source->orientation;
2459         pr->stereo_data = source->stereo_data;
2460
2461         if (source->source_tiles_enabled)
2462                 {
2463                 pr_source_tile_unset(pr);
2464
2465                 pr->source_tiles_enabled = source->source_tiles_enabled;
2466                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2467                 pr->source_tile_width = source->source_tile_width;
2468                 pr->source_tile_height = source->source_tile_height;
2469                 pr->image_width = source->image_width;
2470                 pr->image_height = source->image_height;
2471
2472                 pr->func_tile_request = source->func_tile_request;
2473                 pr->func_tile_dispose = source->func_tile_dispose;
2474                 pr->func_tile_data = source->func_tile_data;
2475
2476                 pr->source_tiles = source->source_tiles;
2477                 source->source_tiles = NULL;
2478
2479                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2480                 }
2481         else
2482                 {
2483                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2484                 }
2485
2486         pr->scroll_reset = scroll_reset;
2487
2488         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2489 }
2490
2491 void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
2492 {
2493         GObject *object;
2494         PixbufRendererScrollResetType scroll_reset;
2495
2496         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2497         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2498
2499         if (pr == source) return;
2500
2501         object = G_OBJECT(pr);
2502
2503         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2504         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2505         g_object_set(object, "loading", source->loading, NULL);
2506
2507         pr->complete = source->complete;
2508
2509         pr->x_scroll = source->x_scroll;
2510         pr->y_scroll = source->y_scroll;
2511         pr->x_mouse  = source->x_mouse;
2512         pr->y_mouse  = source->y_mouse;
2513
2514         scroll_reset = pr->scroll_reset;
2515         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2516
2517         pr->orientation = source->orientation;
2518         pr->stereo_data = source->stereo_data;
2519
2520         if (source->source_tiles_enabled)
2521                 {
2522                 pr->source_tiles_enabled = source->source_tiles_enabled;
2523                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2524                 pr->source_tile_width = source->source_tile_width;
2525                 pr->source_tile_height = source->source_tile_height;
2526                 pr->image_width = source->image_width;
2527                 pr->image_height = source->image_height;
2528
2529                 pr->func_tile_request = source->func_tile_request;
2530                 pr->func_tile_dispose = source->func_tile_dispose;
2531                 pr->func_tile_data = source->func_tile_data;
2532
2533                 pr->source_tiles = source->source_tiles;
2534                 source->source_tiles = NULL;
2535
2536                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2537                 }
2538         else
2539                 {
2540                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2541                 }
2542
2543         pr->scroll_reset = scroll_reset;
2544 }
2545
2546 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2547 {
2548         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2549
2550         if (pr->source_tiles_enabled)
2551                 {
2552                 pr_source_tile_changed(pr, x, y, w, h);
2553                 }
2554
2555         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2556         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2557 }
2558
2559 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2560 {
2561         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2562
2563         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2564 }
2565
2566 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2567 {
2568         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2569
2570         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2571 }
2572
2573 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2574 {
2575         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2576
2577         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2578 }
2579
2580 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2581 {
2582         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2583
2584         return pr->zoom;
2585 }
2586
2587 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2588 {
2589         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2590
2591         return pr->scale;
2592 }
2593
2594 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2595 {
2596         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2597
2598         if (min > 1.0 || max < 1.0) return;
2599         if (min < 1.0 && min > -1.0) return;
2600         if (min < -200.0 || max > 200.0) return;
2601
2602         if (pr->zoom_min != min)
2603                 {
2604                 pr->zoom_min = min;
2605                 g_object_notify(G_OBJECT(pr), "zoom_min");
2606                 }
2607         if (pr->zoom_max != max)
2608                 {
2609                 pr->zoom_max = max;
2610                 g_object_notify(G_OBJECT(pr), "zoom_max");
2611                 }
2612 }
2613
2614 static void pr_stereo_set(PixbufRenderer *pr)
2615 {
2616         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2617
2618         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2619
2620         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2621                 {
2622                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2623                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2624                 }
2625         else
2626                 {
2627                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2628                 pr->renderer2 = NULL;
2629                 }
2630         if (pr->stereo_mode & PR_STEREO_HALF)
2631                 {
2632                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2633                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2634                 else pr->aspect_ratio = 1.0;
2635                 }
2636         else
2637                 {
2638                 pr->aspect_ratio = 1.0;
2639                 }
2640 }
2641
2642 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2643 {
2644         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2645         pr->stereo_mode = stereo_mode;
2646         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2647
2648         pr->stereo_temp_disable = FALSE;
2649
2650         pr_stereo_set(pr);
2651
2652         if (redraw)
2653                 {
2654                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2655                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2656                 }
2657 }
2658
2659 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2660 {
2661         pr->stereo_fixed_width = width;
2662         pr->stereo_fixed_height = height;
2663         pr->stereo_fixed_x_left = x1;
2664         pr->stereo_fixed_y_left = y1;
2665         pr->stereo_fixed_x_right = x2;
2666         pr->stereo_fixed_y_right = y2;
2667 }
2668
2669 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2670 {
2671         return pr->stereo_mode;
2672 }
2673
2674 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2675 {
2676         if (pr->stereo_temp_disable == disable) return;
2677         pr->stereo_temp_disable = disable;
2678         if (disable)
2679                 {
2680                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2681                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2682                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2683                 pr->renderer2 = NULL;
2684                 pr->aspect_ratio = 1.0;
2685                 }
2686         else
2687                 {
2688                 pr_stereo_set(pr);
2689                 }
2690         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2691 }
2692
2693 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2694                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2695 {
2696         GdkPixbuf *pb = pr->pixbuf;
2697         gint p_alpha, prs;
2698         guchar *p_pix, *pp;
2699         gint map_x, map_y, map_w, map_h;
2700
2701         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2702         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2703
2704         if (!pr->pixbuf && !pr->source_tiles_enabled)
2705                 {
2706                 *r_mouse = -1;
2707                 *g_mouse = -1;
2708                 *b_mouse = -1;
2709                 return FALSE;
2710                 }
2711
2712         if (!pb) return FALSE;
2713
2714         pr_tile_region_map_orientation(pr->orientation,
2715                                         x_pixel, y_pixel,
2716                                         pr->image_width, pr->image_height,
2717                                         1, 1, /*single pixel */
2718                                         &map_x, &map_y,
2719                                         &map_w, &map_h);
2720
2721         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2722         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2723
2724         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2725         prs = gdk_pixbuf_get_rowstride(pb);
2726         p_pix = gdk_pixbuf_get_pixels(pb);
2727
2728         pp = p_pix + map_y * prs + (map_x * (p_alpha ? 4 : 3));
2729         *r_mouse = *pp;
2730         pp++;
2731         *g_mouse = *pp;
2732         pp++;
2733         *b_mouse = *pp;
2734
2735         return TRUE;
2736 }
2737
2738 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2739 {
2740         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2741
2742         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2743         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2744
2745         if (!pr->pixbuf && !pr->source_tiles_enabled)
2746                 {
2747                 *x_pixel_return = -1;
2748                 *y_pixel_return = -1;
2749                 return FALSE;
2750                 }
2751
2752         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2753         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2754         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2755         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2756
2757         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2758                 {
2759                 /* mouse is not on pr */
2760                 x_pixel = y_pixel = -1;
2761                 }
2762
2763         *x_pixel_return = x_pixel;
2764         *y_pixel_return = y_pixel;
2765
2766         return TRUE;
2767 }
2768
2769 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2770 {
2771         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2772         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2773
2774         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2775                 {
2776                 *width = 0;
2777                 *height = 0;
2778                 return FALSE;
2779                 }
2780
2781         *width = pr->image_width;
2782         *height = pr->image_height;
2783         return TRUE;
2784 }
2785
2786 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2787 {
2788         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2789         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2790
2791         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2792                 {
2793                 *width = 0;
2794                 *height = 0;
2795                 return FALSE;
2796                 }
2797
2798         *width = pr->width;
2799         *height = pr->height;
2800         return TRUE;
2801 }
2802
2803 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2804 {
2805         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2806         g_return_val_if_fail(rect != NULL, FALSE);
2807
2808         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2809             !pr->scale)
2810                 {
2811                 rect->x = 0;
2812                 rect->y = 0;
2813                 rect->width = 0;
2814                 rect->height = 0;
2815                 return FALSE;
2816                 }
2817
2818         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2819         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2820         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2821         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2822         return TRUE;
2823 }
2824
2825 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2826 {
2827         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2828         g_return_val_if_fail(rect != NULL, FALSE);
2829
2830         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2831                 {
2832                 rect->x = 0;
2833                 rect->y = 0;
2834                 rect->width = 0;
2835                 rect->height = 0;
2836                 return FALSE;
2837                 }
2838
2839         rect->x = pr->x_scroll;
2840         rect->y = pr->y_scroll;
2841         rect->width = pr->vis_width;
2842         rect->height = pr->vis_height;
2843         return TRUE;
2844 }
2845
2846 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2847 {
2848 #if 0
2849         /* FIXME: this function does not consider the image orientation,
2850         so it probably only breaks something */
2851         gdouble zoom;
2852         gint w, h;
2853
2854         zoom = pixbuf_renderer_zoom_get(pr);
2855         pr->image_width = width;
2856         pr->image_height = height;
2857
2858         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2859
2860         //w = width;
2861         //h = height;
2862
2863         //pr->width = width;
2864         //pr->height = height;
2865 #endif
2866 }
2867
2868 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */