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