src/pixbuf-renderer.c

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