src/pixbuf-renderer.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <math.h>
  17
  18 #include "main.h"
  19 #include "pixbuf-renderer.h"
  20 #include "renderer-tiles.h"
  21
  22 #include "intl.h"
  23 #include "layout.h"
  24
  25 #include <gtk/gtk.h>
  26
  27
  28 /* comment this out if not using this from within Geeqie
  29  * defining GQ_BUILD does these things:
  30  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  31  */
  32 #define GQ_BUILD 1
  33
  34 #ifdef GQ_BUILD
  35 #include "main.h"
  36 #include "pixbuf_util.h"
  37 #include "exif.h"
  38 #else
  39 typedef enum {
  40         EXIF_ORIENTATION_UNKNOWN        = 0,
  41         EXIF_ORIENTATION_TOP_LEFT       = 1,
  42         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  43         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  44         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  45         EXIF_ORIENTATION_LEFT_TOP       = 5,
  46         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  47         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  48         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  49 } ExifOrientationType;
  50 #endif
  51
  52
  53 /* default min and max zoom */
  54 #define PR_ZOOM_MIN -32.0
  55 #define PR_ZOOM_MAX 32.0
  56
  57 /* distance to drag mouse to disable image flip */
  58 #define PR_DRAG_SCROLL_THRESHHOLD 4
  59
  60 /* increase pan rate when holding down shift */
  61 #define PR_PAN_SHIFT_MULTIPLIER 6
  62
  63 /* scroller config */
  64 #define PR_SCROLLER_UPDATES_PER_SEC 30
  65 #define PR_SCROLLER_DEAD_ZONE 6
  66
  67 /* when scaling image to below this size, use nearest pixel for scaling
  68  * (below about 4, the other scale types become slow generating their conversion tables)
  69  */
  70 #define PR_MIN_SCALE_SIZE 8
  71
  72 enum {
  73         SIGNAL_ZOOM = 0,
  74         SIGNAL_CLICKED,
  75         SIGNAL_SCROLL_NOTIFY,
  76         SIGNAL_RENDER_COMPLETE,
  77         SIGNAL_DRAG,
  78         SIGNAL_UPDATE_PIXEL,
  79         SIGNAL_COUNT
  80 };
  81
  82 enum {
  83         PROP_0,
  84         PROP_ZOOM_MIN,
  85         PROP_ZOOM_MAX,
  86         PROP_ZOOM_QUALITY,
  87         PROP_ZOOM_2PASS,
  88         PROP_ZOOM_EXPAND,
  89         PROP_SCROLL_RESET,
  90         PROP_DELAY_FLIP,
  91         PROP_LOADING,
  92         PROP_COMPLETE,
  93         PROP_CACHE_SIZE_DISPLAY,
  94         PROP_CACHE_SIZE_TILES,
  95         PROP_WINDOW_FIT,
  96         PROP_WINDOW_LIMIT,
  97         PROP_WINDOW_LIMIT_VALUE,
  98         PROP_AUTOFIT_LIMIT,
  99         PROP_AUTOFIT_LIMIT_VALUE
 100 };
 101
 102 typedef enum {
 103         PR_ZOOM_NONE            = 0,
 104         PR_ZOOM_FORCE           = 1 << 0,
 105         PR_ZOOM_NEW             = 1 << 1,
 106         PR_ZOOM_CENTER          = 1 << 2,
 107         PR_ZOOM_INVALIDATE      = 1 << 3,
 108         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 109 } PrZoomFlags;
 110
 111 static guint signals[SIGNAL_COUNT] = { 0 };
 112 static GtkEventBoxClass *parent_class = NULL;
 113
 114
 115
 116 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 117 static void pixbuf_renderer_init(PixbufRenderer *pr);
 118 static void pixbuf_renderer_finalize(GObject *object);
 119 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 120                                          const GValue *value, GParamSpec *pspec);
 121 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 122                                          GValue *value, GParamSpec *pspec);
 123 #if GTK_CHECK_VERSION(3,0,0)
 124 static gboolean pixbuf_renderer_draw(GtkWidget *widget, cairo_t *cr);
 125 #else
 126 static gboolean pixbuf_renderer_expose(GtkWidget *widget, GdkEventExpose *event);
 127 #endif
 128
 129 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 130
 131
 132 static void pr_source_tile_free_all(PixbufRenderer *pr);
 133
 134 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 135                          PrZoomFlags flags, gint px, gint py);
 136
 137 static void pr_signals_connect(PixbufRenderer *pr);
 138 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 139 static void pixbuf_renderer_paint(PixbufRenderer *pr, GdkRectangle *area);
 140 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 141
 142
 143 /*
 144  *-------------------------------------------------------------------
 145  * Pixbuf Renderer object
 146  *-------------------------------------------------------------------
 147  */
 148
 149 GType pixbuf_renderer_get_type(void)
 150 {
 151         static GType pixbuf_renderer_type = 0;
 152
 153         if (!pixbuf_renderer_type)
 154                 {
 155                 static const GTypeInfo pixbuf_renderer_info =
 156                         {
 157                         sizeof(PixbufRendererClass), /* class_size */
 158                         NULL,           /* base_init */
 159                         NULL,           /* base_finalize */
 160                         (GClassInitFunc)pixbuf_renderer_class_init,
 161                         NULL,           /* class_finalize */
 162                         NULL,           /* class_data */
 163                         sizeof(PixbufRenderer), /* instance_size */
 164                         0,              /* n_preallocs */
 165                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 166                         NULL,           /* value_table */
 167                         };
 168
 169                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 170                                                               &pixbuf_renderer_info, 0);
 171                 }
 172
 173         return pixbuf_renderer_type;
 174 }
 175
 176 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 177 {
 178         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 179         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(class);
 180
 181         parent_class = g_type_class_peek_parent(class);
 182
 183         gobject_class->set_property = pixbuf_renderer_set_property;
 184         gobject_class->get_property = pixbuf_renderer_get_property;
 185
 186         gobject_class->finalize = pixbuf_renderer_finalize;
 187
 188 #if GTK_CHECK_VERSION(3,0,0)
 189         widget_class->draw = pixbuf_renderer_draw;
 190 #else
 191         widget_class->expose_event = pixbuf_renderer_expose;
 192 #endif
 193
 194         g_object_class_install_property(gobject_class,
 195                                         PROP_ZOOM_MIN,
 196                                         g_param_spec_double("zoom_min",
 197                                                             "Zoom minimum",
 198                                                             NULL,
 199                                                             -1000.0,
 200                                                             1000.0,
 201                                                             PR_ZOOM_MIN,
 202                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 203
 204         g_object_class_install_property(gobject_class,
 205                                         PROP_ZOOM_MAX,
 206                                         g_param_spec_double("zoom_max",
 207                                                             "Zoom maximum",
 208                                                             NULL,
 209                                                             -1000.0,
 210                                                             1000.0,
 211                                                             PR_ZOOM_MIN,
 212                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 213
 214         g_object_class_install_property(gobject_class,
 215                                         PROP_ZOOM_QUALITY,
 216                                         g_param_spec_uint("zoom_quality",
 217                                                           "Zoom quality",
 218                                                           NULL,
 219                                                           GDK_INTERP_NEAREST,
 220                                                           GDK_INTERP_HYPER,
 221                                                           GDK_INTERP_BILINEAR,
 222                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 223
 224         g_object_class_install_property(gobject_class,
 225                                         PROP_ZOOM_2PASS,
 226                                         g_param_spec_boolean("zoom_2pass",
 227                                                              "2 pass zoom",
 228                                                              NULL,
 229                                                              TRUE,
 230                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 231
 232         g_object_class_install_property(gobject_class,
 233                                         PROP_ZOOM_EXPAND,
 234                                         g_param_spec_boolean("zoom_expand",
 235                                                              "Expand image in autozoom.",
 236                                                              NULL,
 237                                                              FALSE,
 238                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 239         g_object_class_install_property(gobject_class,
 240                                         PROP_SCROLL_RESET,
 241                                         g_param_spec_uint("scroll_reset",
 242                                                           "New image scroll reset",
 243                                                           NULL,
 244                                                           PR_SCROLL_RESET_TOPLEFT,
 245                                                           PR_SCROLL_RESET_NOCHANGE,
 246                                                           PR_SCROLL_RESET_TOPLEFT,
 247                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 248
 249         g_object_class_install_property(gobject_class,
 250                                         PROP_DELAY_FLIP,
 251                                         g_param_spec_boolean("delay_flip",
 252                                                              "Delay image update",
 253                                                              NULL,
 254                                                              FALSE,
 255                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 256
 257         g_object_class_install_property(gobject_class,
 258                                         PROP_LOADING,
 259                                         g_param_spec_boolean("loading",
 260                                                              "Image actively loading",
 261                                                              NULL,
 262                                                              FALSE,
 263                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 264
 265         g_object_class_install_property(gobject_class,
 266                                         PROP_COMPLETE,
 267                                         g_param_spec_boolean("complete",
 268                                                              "Image rendering complete",
 269                                                              NULL,
 270                                                              FALSE,
 271                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 272
 273         g_object_class_install_property(gobject_class,
 274                                         PROP_CACHE_SIZE_DISPLAY,
 275                                         g_param_spec_uint("cache_display",
 276                                                           "Display cache size MB",
 277                                                           NULL,
 278                                                           0,
 279                                                           128,
 280                                                           PR_CACHE_SIZE_DEFAULT,
 281                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 282
 283         g_object_class_install_property(gobject_class,
 284                                         PROP_CACHE_SIZE_TILES,
 285                                         g_param_spec_uint("cache_tiles",
 286                                                           "Tile cache count",
 287                                                           "Number of tiles to retain in memory at any one time.",
 288                                                           0,
 289                                                           256,
 290                                                           PR_CACHE_SIZE_DEFAULT,
 291                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 292
 293         g_object_class_install_property(gobject_class,
 294                                         PROP_WINDOW_FIT,
 295                                         g_param_spec_boolean("window_fit",
 296                                                              "Fit window to image size",
 297                                                              NULL,
 298                                                              FALSE,
 299                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 300
 301         g_object_class_install_property(gobject_class,
 302                                         PROP_WINDOW_LIMIT,
 303                                         g_param_spec_boolean("window_limit",
 304                                                              "Limit size of parent window",
 305                                                              NULL,
 306                                                              FALSE,
 307                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 308
 309         g_object_class_install_property(gobject_class,
 310                                         PROP_WINDOW_LIMIT_VALUE,
 311                                         g_param_spec_uint("window_limit_value",
 312                                                           "Size limit of parent window",
 313                                                           NULL,
 314                                                           10,
 315                                                           150,
 316                                                           100,
 317                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 318
 319         g_object_class_install_property(gobject_class,
 320                                         PROP_AUTOFIT_LIMIT,
 321                                         g_param_spec_boolean("autofit_limit",
 322                                                              "Limit size of image when autofitting",
 323                                                              NULL,
 324                                                              FALSE,
 325                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 326
 327         g_object_class_install_property(gobject_class,
 328                                         PROP_AUTOFIT_LIMIT_VALUE,
 329                                         g_param_spec_uint("autofit_limit_value",
 330                                                           "Size limit of image when autofitting",
 331                                                           NULL,
 332                                                           10,
 333                                                           150,
 334                                                           100,
 335                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 336
 337
 338         signals[SIGNAL_ZOOM] =
 339                 g_signal_new("zoom",
 340                              G_OBJECT_CLASS_TYPE(gobject_class),
 341                              G_SIGNAL_RUN_LAST,
 342                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 343                              NULL, NULL,
 344                              g_cclosure_marshal_VOID__DOUBLE,
 345                              G_TYPE_NONE, 1,
 346                              G_TYPE_DOUBLE);
 347
 348         signals[SIGNAL_CLICKED] =
 349                 g_signal_new("clicked",
 350                              G_OBJECT_CLASS_TYPE(gobject_class),
 351                              G_SIGNAL_RUN_LAST,
 352                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 353                              NULL, NULL,
 354                              g_cclosure_marshal_VOID__BOXED,
 355                              G_TYPE_NONE, 1,
 356                              GDK_TYPE_EVENT);
 357
 358         signals[SIGNAL_SCROLL_NOTIFY] =
 359                 g_signal_new("scroll-notify",
 360                              G_OBJECT_CLASS_TYPE(gobject_class),
 361                              G_SIGNAL_RUN_LAST,
 362                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 363                              NULL, NULL,
 364                              g_cclosure_marshal_VOID__VOID,
 365                              G_TYPE_NONE, 0);
 366
 367         signals[SIGNAL_RENDER_COMPLETE] =
 368                 g_signal_new("render-complete",
 369                              G_OBJECT_CLASS_TYPE(gobject_class),
 370                              G_SIGNAL_RUN_LAST,
 371                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 372                              NULL, NULL,
 373                              g_cclosure_marshal_VOID__VOID,
 374                              G_TYPE_NONE, 0);
 375
 376         signals[SIGNAL_DRAG] =
 377                 g_signal_new("drag",
 378                              G_OBJECT_CLASS_TYPE(gobject_class),
 379                              G_SIGNAL_RUN_LAST,
 380                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 381                              NULL, NULL,
 382                              g_cclosure_marshal_VOID__BOXED,
 383                              G_TYPE_NONE, 1,
 384                              GDK_TYPE_EVENT);
 385
 386         signals[SIGNAL_UPDATE_PIXEL] =
 387                 g_signal_new("update-pixel",
 388                              G_OBJECT_CLASS_TYPE(gobject_class),
 389                              G_SIGNAL_RUN_LAST,
 390                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 391                              NULL, NULL,
 392                              g_cclosure_marshal_VOID__VOID,
 393                              G_TYPE_NONE, 0);
 394 }
 395
 396 static void pixbuf_renderer_init(PixbufRenderer *pr)
 397 {
 398         GtkWidget *box;
 399
 400         box = GTK_WIDGET(pr);
 401
 402         pr->zoom_min = PR_ZOOM_MIN;
 403         pr->zoom_max = PR_ZOOM_MAX;
 404         pr->zoom_quality = GDK_INTERP_BILINEAR;
 405         pr->zoom_2pass = FALSE;
 406
 407         pr->zoom = 1.0;
 408         pr->scale = 1.0;
 409         pr->aspect_ratio = 1.0;
 410
 411         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 412
 413         pr->scroller_id = 0;
 414         pr->scroller_overlay = -1;
 415
 416         pr->x_mouse = -1;
 417         pr->y_mouse = -1;
 418
 419         pr->source_tiles_enabled = FALSE;
 420         pr->source_tiles = NULL;
 421
 422         pr->orientation = 1;
 423
 424         pr->norm_center_x = 0.5;
 425         pr->norm_center_y = 0.5;
 426
 427         pr->stereo_mode = PR_STEREO_NONE;
 428
 429         pr->renderer = (void *)renderer_tiles_new(pr);
 430
 431         pr->renderer2 = NULL;
 432
 433         gtk_widget_set_double_buffered(box, FALSE);
 434         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 435                                G_CALLBACK(pr_size_cb), pr);
 436
 437         pr_signals_connect(pr);
 438 }
 439
 440 static void pixbuf_renderer_finalize(GObject *object)
 441 {
 442         PixbufRenderer *pr;
 443
 444         pr = PIXBUF_RENDERER(object);
 445
 446         pr->renderer->free(pr->renderer);
 447         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 448
 449
 450         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 451
 452         pr_scroller_timer_set(pr, FALSE);
 453
 454         pr_source_tile_free_all(pr);
 455 }
 456
 457 PixbufRenderer *pixbuf_renderer_new(void)
 458 {
 459         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 460 }
 461
 462 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 463                                          const GValue *value, GParamSpec *pspec)
 464 {
 465         PixbufRenderer *pr;
 466
 467         pr = PIXBUF_RENDERER(object);
 468
 469         switch (prop_id)
 470                 {
 471                 case PROP_ZOOM_MIN:
 472                         pr->zoom_min = g_value_get_double(value);
 473                         break;
 474                 case PROP_ZOOM_MAX:
 475                         pr->zoom_max = g_value_get_double(value);
 476                         break;
 477                 case PROP_ZOOM_QUALITY:
 478                         pr->zoom_quality = g_value_get_uint(value);
 479                         break;
 480                 case PROP_ZOOM_2PASS:
 481                         pr->zoom_2pass = g_value_get_boolean(value);
 482                         break;
 483                 case PROP_ZOOM_EXPAND:
 484                         pr->zoom_expand = g_value_get_boolean(value);
 485                         break;
 486                 case PROP_SCROLL_RESET:
 487                         pr->scroll_reset = g_value_get_uint(value);
 488                         break;
 489                 case PROP_DELAY_FLIP:
 490                         pr->delay_flip = g_value_get_boolean(value);
 491                         break;
 492                 case PROP_LOADING:
 493                         pr->loading = g_value_get_boolean(value);
 494                         break;
 495                 case PROP_COMPLETE:
 496                         pr->complete = g_value_get_boolean(value);
 497                         break;
 498                 case PROP_CACHE_SIZE_DISPLAY:
 499 //                      pr->tile_cache_max = g_value_get_uint(value);
 500                         break;
 501                 case PROP_CACHE_SIZE_TILES:
 502                         pr->source_tiles_cache_size = g_value_get_uint(value);
 503                         break;
 504                 case PROP_WINDOW_FIT:
 505                         pr->window_fit = g_value_get_boolean(value);
 506                         break;
 507                 case PROP_WINDOW_LIMIT:
 508                         pr->window_limit = g_value_get_boolean(value);
 509                         break;
 510                 case PROP_WINDOW_LIMIT_VALUE:
 511                         pr->window_limit_size = g_value_get_uint(value);
 512                         break;
 513                 case PROP_AUTOFIT_LIMIT:
 514                         pr->autofit_limit = g_value_get_boolean(value);
 515                         break;
 516                 case PROP_AUTOFIT_LIMIT_VALUE:
 517                         pr->autofit_limit_size = g_value_get_uint(value);
 518                         break;
 519                 default:
 520                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 521                         break;
 522                 }
 523 }
 524
 525 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 526                                          GValue *value, GParamSpec *pspec)
 527 {
 528         PixbufRenderer *pr;
 529
 530         pr = PIXBUF_RENDERER(object);
 531
 532         switch (prop_id)
 533                 {
 534                 case PROP_ZOOM_MIN:
 535                         g_value_set_double(value, pr->zoom_min);
 536                         break;
 537                 case PROP_ZOOM_MAX:
 538                         g_value_set_double(value, pr->zoom_max);
 539                         break;
 540                 case PROP_ZOOM_QUALITY:
 541                         g_value_set_uint(value, pr->zoom_quality);
 542                         break;
 543                 case PROP_ZOOM_2PASS:
 544                         g_value_set_boolean(value, pr->zoom_2pass);
 545                         break;
 546                 case PROP_ZOOM_EXPAND:
 547                         g_value_set_boolean(value, pr->zoom_expand);
 548                         break;
 549                 case PROP_SCROLL_RESET:
 550                         g_value_set_uint(value, pr->scroll_reset);
 551                         break;
 552                 case PROP_DELAY_FLIP:
 553                         g_value_set_boolean(value, pr->delay_flip);
 554                         break;
 555                 case PROP_LOADING:
 556                         g_value_set_boolean(value, pr->loading);
 557                         break;
 558                 case PROP_COMPLETE:
 559                         g_value_set_boolean(value, pr->complete);
 560                         break;
 561                 case PROP_CACHE_SIZE_DISPLAY:
 562 //                      g_value_set_uint(value, pr->tile_cache_max);
 563                         break;
 564                 case PROP_CACHE_SIZE_TILES:
 565                         g_value_set_uint(value, pr->source_tiles_cache_size);
 566                         break;
 567                 case PROP_WINDOW_FIT:
 568                         g_value_set_boolean(value, pr->window_fit);
 569                         break;
 570                 case PROP_WINDOW_LIMIT:
 571                         g_value_set_boolean(value, pr->window_limit);
 572                         break;
 573                 case PROP_WINDOW_LIMIT_VALUE:
 574                         g_value_set_uint(value, pr->window_limit_size);
 575                         break;
 576                 case PROP_AUTOFIT_LIMIT:
 577                         g_value_set_boolean(value, pr->autofit_limit);
 578                         break;
 579                 case PROP_AUTOFIT_LIMIT_VALUE:
 580                         g_value_set_uint(value, pr->autofit_limit_size);
 581                         break;
 582                 default:
 583                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 584                         break;
 585                 }
 586 }
 587
 588 #if GTK_CHECK_VERSION(3,0,0)
 589
 590 static gboolean pixbuf_renderer_draw(GtkWidget *widget, cairo_t *cr)
 591 {
 592         if (gtk_widget_is_drawable(widget))
 593                 {
 594                 if (gtk_widget_get_has_window(widget))
 595                         {
 596                         GdkRectangle area;
 597                         if (gdk_cairo_get_clip_rectangle(cr, &area))
 598                                 {
 599                                 pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &area);
 600                                 }
 601                         }
 602                 }
 603
 604         return FALSE;
 605 }
 606
 607 #else
 608 static gboolean pixbuf_renderer_expose(GtkWidget *widget, GdkEventExpose *event)
 609 {
 610 #if GTK_CHECK_VERSION(2,20,0)
 611         if (gtk_widget_is_drawable(widget))
 612 #else
 613         if (GTK_WIDGET_DRAWABLE(widget))
 614 #endif
 615                 {
 616 #if GTK_CHECK_VERSION(2,20,0)
 617                 if (gtk_widget_get_has_window(widget))
 618 #else
 619                 if (!GTK_WIDGET_NO_WINDOW(widget))
 620 #endif
 621                         {
 622                         if (event->window != gtk_widget_get_window(widget))
 623                                 {
 624                                 GdkRectangle area;
 625
 626                                 gdk_window_get_position(event->window, &area.x, &area.y);
 627                                 area.x += event->area.x;
 628                                 area.y += event->area.y;
 629                                 area.width = event->area.width;
 630                                 area.height = event->area.height;
 631                                 pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &area);
 632                                 }
 633                         else
 634                                 {
 635                                 pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &event->area);
 636                                 }
 637                         }
 638                 }
 639
 640         return FALSE;
 641 }
 642 #endif
 643
 644 /*
 645  *-------------------------------------------------------------------
 646  * misc utilities
 647  *-------------------------------------------------------------------
 648  */
 649
 650 static void widget_set_cursor(GtkWidget *widget, gint icon)
 651 {
 652         GdkCursor *cursor;
 653
 654         if (!gtk_widget_get_window(widget)) return;
 655
 656         if (icon == -1)
 657                 {
 658                 cursor = NULL;
 659                 }
 660         else
 661                 {
 662                 cursor = gdk_cursor_new(icon);
 663                 }
 664
 665         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 666
 667         if (cursor) gdk_cursor_unref(cursor);
 668 }
 669
 670 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 671                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 672                                gint *rx, gint *ry, gint *rw, gint *rh)
 673 {
 674         if (clip_x + clip_w <= x ||
 675             clip_x >= x + w ||
 676             clip_y + clip_h <= y ||
 677             clip_y >= y + h)
 678                 {
 679                 return FALSE;
 680                 }
 681
 682         *rx = MAX(x, clip_x);
 683         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 684
 685         *ry = MAX(y, clip_y);
 686         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 687
 688         return TRUE;
 689 }
 690
 691 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 692 {
 693         GdkWindowState state;
 694
 695         if (!pr->parent_window) return FALSE;
 696         if (!pr->window_fit) return FALSE;
 697         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 698
 699         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 700         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 701         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 702
 703         return TRUE;
 704 }
 705
 706 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 707 {
 708         GtkWidget *widget;
 709         GtkWidget *parent;
 710         gint ww, wh;
 711         GtkAllocation widget_allocation;
 712         GtkAllocation parent_allocation;
 713
 714         if (!pr_parent_window_sizable(pr)) return FALSE;
 715
 716         if (pr->window_limit)
 717                 {
 718                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 719                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 720
 721                 if (w > sw) w = sw;
 722                 if (h > sh) h = sh;
 723                 }
 724
 725         widget = GTK_WIDGET(pr);
 726         parent = GTK_WIDGET(pr->parent_window);
 727
 728         gtk_widget_get_allocation(widget, &widget_allocation);
 729         gtk_widget_get_allocation(parent, &parent_allocation);
 730
 731         w += (parent_allocation.width - widget_allocation.width);
 732         h += (parent_allocation.height - widget_allocation.height);
 733
 734         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 735         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 736         if (w == ww && h == wh) return FALSE;
 737
 738         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 739
 740         return TRUE;
 741 }
 742
 743 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 744 {
 745         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 746         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 747
 748         pr->parent_window = GTK_WIDGET(window);
 749 }
 750
 751 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 752 {
 753         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 754
 755         return GTK_WINDOW(pr->parent_window);
 756 }
 757
 758
 759 /*
 760  *-------------------------------------------------------------------
 761  * overlays
 762  *-------------------------------------------------------------------
 763  */
 764
 765
 766 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 767                                  OverlayRendererFlags flags)
 768 {
 769         /* let's assume both renderers returns the same value */
 770         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 771         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 772 }
 773
 774 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 775 {
 776         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 777         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 778 }
 779
 780 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 781 {
 782         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 783         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 784 }
 785
 786 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 787 {
 788         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 789         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 790 }
 791
 792 /*
 793  *-------------------------------------------------------------------
 794  * scroller overlay
 795  *-------------------------------------------------------------------
 796  */
 797
 798
 799 static gboolean pr_scroller_update_cb(gpointer data)
 800 {
 801         PixbufRenderer *pr = data;
 802         gint x, y;
 803         gint xinc, yinc;
 804
 805         /* this was a simple scroll by difference between scroller and mouse position,
 806          * but all this math results in a smoother result and accounts for a dead zone.
 807          */
 808
 809         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 810                 {
 811                 x = 0;
 812                 }
 813         else
 814                 {
 815                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 816                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 817                 x += (x > 0) ? -shift : shift;
 818                 }
 819
 820         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 821                 {
 822                 y = 0;
 823                 }
 824         else
 825                 {
 826                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 827                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 828                 y += (y > 0) ? -shift : shift;
 829                 }
 830
 831         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 832                 {
 833                 xinc = x;
 834                 }
 835         else
 836                 {
 837                 xinc = pr->scroller_xinc;
 838
 839                 if (x >= 0)
 840                         {
 841                         if (xinc < 0) xinc = 0;
 842                         if (x < xinc) xinc = x;
 843                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 844                         }
 845                 else
 846                         {
 847                         if (xinc > 0) xinc = 0;
 848                         if (x > xinc) xinc = x;
 849                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 850                         }
 851                 }
 852
 853         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 854                 {
 855                 yinc = y;
 856                 }
 857         else
 858                 {
 859                 yinc = pr->scroller_yinc;
 860
 861                 if (y >= 0)
 862                         {
 863                         if (yinc < 0) yinc = 0;
 864                         if (y < yinc) yinc = y;
 865                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 866                         }
 867                 else
 868                         {
 869                         if (yinc > 0) yinc = 0;
 870                         if (y > yinc) yinc = y;
 871                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 872                         }
 873                 }
 874
 875         pr->scroller_xinc = xinc;
 876         pr->scroller_yinc = yinc;
 877
 878         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 879         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 880
 881         pixbuf_renderer_scroll(pr, xinc, yinc);
 882
 883         return TRUE;
 884 }
 885
 886 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 887 {
 888         if (pr->scroller_id)
 889                 {
 890                 g_source_remove(pr->scroller_id);
 891                 pr->scroller_id = 0;
 892                 }
 893
 894         if (start)
 895                 {
 896                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 897                                                 pr_scroller_update_cb, pr);
 898                 }
 899 }
 900
 901 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 902 {
 903         if (pr->scroller_overlay == -1)
 904                 {
 905                 GdkPixbuf *pixbuf;
 906                 gint w, h;
 907
 908 #ifdef GQ_BUILD
 909                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 910 #else
 911                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 912                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 913 #endif
 914                 w = gdk_pixbuf_get_width(pixbuf);
 915                 h = gdk_pixbuf_get_height(pixbuf);
 916
 917                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 918                 g_object_unref(pixbuf);
 919                 }
 920
 921         pr->scroller_x = x;
 922         pr->scroller_y = y;
 923         pr->scroller_xpos = x;
 924         pr->scroller_ypos = y;
 925
 926         pr_scroller_timer_set(pr, TRUE);
 927 }
 928
 929 static void pr_scroller_stop(PixbufRenderer *pr)
 930 {
 931         if (!pr->scroller_id) return;
 932
 933         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 934         pr->scroller_overlay = -1;
 935
 936         pr_scroller_timer_set(pr, FALSE);
 937 }
 938
 939 /*
 940  *-------------------------------------------------------------------
 941  * borders
 942  *-------------------------------------------------------------------
 943  */
 944
 945 static void pr_border_clear(PixbufRenderer *pr)
 946 {
 947         pr->renderer->border_clear(pr->renderer);
 948         if (pr->renderer2) pr->renderer2->border_clear(pr->renderer2);
 949 }
 950
 951 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 952 {
 953         GtkStyle *style;
 954         GtkWidget *widget;
 955
 956         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 957
 958         widget = GTK_WIDGET(pr);
 959
 960         if (color) {
 961                 GdkColor *slot;
 962
 963                 style = gtk_style_copy(gtk_widget_get_style(widget));
 964                 slot = &style->bg[GTK_STATE_NORMAL];
 965
 966                 slot->red = color->red;
 967                 slot->green = color->green;
 968                 slot->blue = color->blue;
 969                 }
 970         else {
 971                 style = gtk_style_copy(gtk_widget_get_default_style());
 972         }
 973
 974         gtk_widget_set_style(widget, style);
 975
 976 #if GTK_CHECK_VERSION(2,20,0)
 977         if (gtk_widget_get_visible(widget)) pr_border_clear(pr);
 978 #else
 979         if (GTK_WIDGET_VISIBLE(widget)) pr_border_clear(pr);
 980 #endif
 981 }
 982
 983 static void pr_redraw(PixbufRenderer *pr, gboolean new_data)
 984 {
 985         pr->renderer->queue_clear(pr->renderer);
 986         pr->renderer->redraw(pr->renderer, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, new_data, FALSE);
 987         if (pr->renderer2) {
 988                 pr->renderer2->queue_clear(pr->renderer2);
 989                 pr->renderer2->redraw(pr->renderer2, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, new_data, FALSE);
 990         }
 991 }
 992
 993 /*
 994  *-------------------------------------------------------------------
 995  * source tiles
 996  *-------------------------------------------------------------------
 997  */
 998
 999 static void pr_source_tile_free(SourceTile *st)
1000 {
1001         if (!st) return;
1002
1003         if (st->pixbuf) g_object_unref(st->pixbuf);
1004         g_free(st);
1005 }
1006
1007 static void pr_source_tile_free_all(PixbufRenderer *pr)
1008 {
1009         GList *work;
1010
1011         work = pr->source_tiles;
1012         while (work)
1013                 {
1014                 SourceTile *st;
1015
1016                 st = work->data;
1017                 work = work->next;
1018
1019                 pr_source_tile_free(st);
1020                 }
1021
1022         g_list_free(pr->source_tiles);
1023         pr->source_tiles = NULL;
1024 }
1025
1026 static void pr_source_tile_unset(PixbufRenderer *pr)
1027 {
1028         pr_source_tile_free_all(pr);
1029         pr->source_tiles_enabled = FALSE;
1030 }
1031
1032 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
1033 {
1034         gint x1, y1, x2, y2;
1035
1036         if (!st) return FALSE;
1037
1038 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
1039 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
1040 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
1041 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
1042         x1 = pr->x_scroll;
1043         y1 = pr->y_scroll;
1044         x2 = pr->x_scroll + pr->vis_width;
1045         y2 = pr->y_scroll + pr->vis_height;
1046
1047         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
1048                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
1049                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
1050                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
1051 }
1052
1053 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
1054 {
1055         SourceTile *st = NULL;
1056         gint count;
1057
1058         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
1059
1060         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
1061
1062         count = g_list_length(pr->source_tiles);
1063         if (count >= pr->source_tiles_cache_size)
1064                 {
1065                 GList *work;
1066
1067                 work = g_list_last(pr->source_tiles);
1068                 while (work && count >= pr->source_tiles_cache_size)
1069                         {
1070                         SourceTile *needle;
1071
1072                         needle = work->data;
1073                         work = work->prev;
1074
1075                         if (!pr_source_tile_visible(pr, needle))
1076                                 {
1077                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1078
1079                                 if (pr->func_tile_dispose)
1080                                         {
1081                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1082                                                               pr->source_tile_width, pr->source_tile_height,
1083                                                               needle->pixbuf, pr->func_tile_data);
1084                                         }
1085
1086                                 if (!st)
1087                                         {
1088                                         st = needle;
1089                                         }
1090                                 else
1091                                         {
1092                                         pr_source_tile_free(needle);
1093                                         }
1094
1095                                 count--;
1096                                 }
1097                         }
1098                 }
1099
1100         if (!st)
1101                 {
1102                 st = g_new0(SourceTile, 1);
1103                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1104                                             pr->source_tile_width, pr->source_tile_height);
1105                 }
1106
1107         st->x = ROUND_DOWN(x, pr->source_tile_width);
1108         st->y = ROUND_DOWN(y, pr->source_tile_height);
1109         st->blank = TRUE;
1110
1111         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1112
1113         return st;
1114 }
1115
1116 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1117 {
1118         SourceTile *st;
1119
1120         st = pr_source_tile_new(pr, x, y);
1121         if (!st) return NULL;
1122
1123         if (pr->func_tile_request &&
1124             pr->func_tile_request(pr, st->x, st->y,
1125                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1126                 {
1127                 st->blank = FALSE;
1128                 }
1129
1130         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1131                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1132         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1133                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1134         return st;
1135 }
1136
1137 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1138 {
1139         GList *work;
1140
1141         work = pr->source_tiles;
1142         while (work)
1143                 {
1144                 SourceTile *st = work->data;
1145
1146                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1147                     y >= st->y && y < st->y + pr->source_tile_height)
1148                         {
1149                         if (work != pr->source_tiles)
1150                                 {
1151                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1152                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1153                                 }
1154                         return st;
1155                         }
1156
1157                 work = work->next;
1158                 }
1159
1160         return NULL;
1161 }
1162
1163 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1164 {
1165         gint x1, y1;
1166         GList *list = NULL;
1167         gint sx, sy;
1168
1169         if (x < 0) x = 0;
1170         if (y < 0) y = 0;
1171         if (w > pr->image_width) w = pr->image_width;
1172         if (h > pr->image_height) h = pr->image_height;
1173
1174         sx = ROUND_DOWN(x, pr->source_tile_width);
1175         sy = ROUND_DOWN(y, pr->source_tile_height);
1176
1177         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1178                 {
1179                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1180                         {
1181                         SourceTile *st;
1182
1183                         st = pr_source_tile_find(pr, x1, y1);
1184                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1185
1186                         if (st) list = g_list_prepend(list, st);
1187                         }
1188                 }
1189
1190         return g_list_reverse(list);
1191 }
1192
1193 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1194 {
1195         GList *work;
1196
1197         if (width < 1 || height < 1) return;
1198
1199         work = pr->source_tiles;
1200         while (work)
1201                 {
1202                 SourceTile *st;
1203                 gint rx, ry, rw, rh;
1204
1205                 st = work->data;
1206                 work = work->next;
1207
1208                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1209                                    x, y, width, height,
1210                                    &rx, &ry, &rw, &rh))
1211                         {
1212                         GdkPixbuf *pixbuf;
1213
1214                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1215                         if (pr->func_tile_request &&
1216                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1217                                 {
1218                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1219                                                               rw * pr->scale, rh * pr->scale);
1220                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1221                                                                 rw * pr->scale, rh * pr->scale);
1222                                 }
1223                         g_object_unref(pixbuf);
1224                         }
1225                 }
1226 }
1227
1228 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1229                                gint tile_width, gint tile_height, gint cache_size,
1230                                PixbufRendererTileRequestFunc func_request,
1231                                PixbufRendererTileDisposeFunc func_dispose,
1232                                gpointer user_data,
1233                                gdouble zoom)
1234 {
1235         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1236         g_return_if_fail(tile_width >= 32 && tile_width >= 32);
1237         g_return_if_fail(width >= 32 && height > 32);
1238         g_return_if_fail(func_request != NULL);
1239
1240         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1241         pr->pixbuf = NULL;
1242
1243         pr_source_tile_unset(pr);
1244
1245         if (cache_size < 4) cache_size = 4;
1246
1247         pr->source_tiles_enabled = TRUE;
1248         pr->source_tiles_cache_size = cache_size;
1249         pr->source_tile_width = tile_width;
1250         pr->source_tile_height = tile_height;
1251
1252         pr->image_width = width;
1253         pr->image_height = height;
1254
1255         pr->func_tile_request = func_request;
1256         pr->func_tile_dispose = func_dispose;
1257         pr->func_tile_data = user_data;
1258
1259         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1260         pr_redraw(pr, TRUE);
1261 }
1262
1263 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1264 {
1265         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1266         g_return_if_fail(width >= 32 && height > 32);
1267
1268         if (!pr->source_tiles_enabled) return;
1269         if (pr->image_width == width && pr->image_height == height) return;
1270
1271         pr->image_width = width;
1272         pr->image_height = height;
1273
1274         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1275 }
1276
1277 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1278 {
1279         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1280
1281         return pr->source_tiles_enabled;
1282 }
1283
1284 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1285                                 PrZoomFlags flags, gint x, gint y)
1286 {
1287         gdouble zoom = pr->zoom;
1288
1289         if (increment == 0.0) return;
1290
1291         if (zoom == 0.0)
1292                 {
1293                 if (pr->scale < 1.0)
1294                         {
1295                         zoom = 0.0 - 1.0 / pr->scale;
1296                         }
1297                 else
1298                         {
1299                         zoom = pr->scale;
1300                         }
1301                 }
1302
1303         if (increment < 0.0)
1304                 {
1305                 if (zoom >= 1.0 && zoom + increment < 1.0)
1306                         {
1307                         zoom = zoom + increment - 2.0;
1308                         }
1309                 else
1310                         {
1311                         zoom = zoom + increment;
1312                         }
1313                 }
1314         else
1315                 {
1316                 if (zoom <= -1.0 && zoom + increment > -1.0)
1317                         {
1318                         zoom = zoom + increment + 2.0;
1319                         }
1320                 else
1321                         {
1322                         zoom = zoom + increment;
1323                         }
1324                 }
1325
1326         pr_zoom_sync(pr, zoom, flags, x, y);
1327 }
1328
1329
1330 /*
1331  *-------------------------------------------------------------------
1332  * signal emission
1333  *-------------------------------------------------------------------
1334  */
1335
1336 static void pr_update_signal(PixbufRenderer *pr)
1337 {
1338 #if 0
1339         log_printf("FIXME: send updated signal\n");
1340 #endif
1341         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1342         pr->debug_updated = TRUE;
1343 }
1344
1345 static void pr_zoom_signal(PixbufRenderer *pr)
1346 {
1347         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1348 }
1349
1350 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1351 {
1352         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1353 }
1354
1355 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1356 {
1357         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1358 }
1359
1360 void pr_render_complete_signal(PixbufRenderer *pr)
1361 {
1362         if (!pr->complete)
1363                 {
1364                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1365                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1366                 }
1367         if (pr->debug_updated)
1368                 {
1369                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1370                 pr->debug_updated = FALSE;
1371                 }
1372 }
1373
1374 static void pr_drag_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1375 {
1376         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, bevent);
1377 }
1378
1379 static void pr_update_pixel_signal(PixbufRenderer *pr)
1380 {
1381         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1382 }
1383
1384 /*
1385  *-------------------------------------------------------------------
1386  * sync and clamp
1387  *-------------------------------------------------------------------
1388  */
1389
1390
1391 void pr_tile_coords_map_orientation(gint orientation,
1392                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1393                                      gdouble image_w, gdouble image_h,
1394                                      gdouble tile_w, gdouble tile_h,
1395                                      gdouble *res_x, gdouble *res_y)
1396 {
1397         *res_x = tile_x;
1398         *res_y = tile_y;
1399         switch (orientation)
1400                 {
1401                 case EXIF_ORIENTATION_TOP_LEFT:
1402                         /* normal -- nothing to do */
1403                         break;
1404                 case EXIF_ORIENTATION_TOP_RIGHT:
1405                         /* mirrored */
1406                         *res_x = image_w - tile_x - tile_w;
1407                         break;
1408                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1409                         /* upside down */
1410                         *res_x = image_w - tile_x - tile_w;
1411                         *res_y = image_h - tile_y - tile_h;
1412                         break;
1413                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1414                         /* flipped */
1415                         *res_y = image_h - tile_y - tile_h;
1416                         break;
1417                 case EXIF_ORIENTATION_LEFT_TOP:
1418                         *res_x = tile_y;
1419                         *res_y = tile_x;
1420                         break;
1421                 case EXIF_ORIENTATION_RIGHT_TOP:
1422                         /* rotated -90 (270) */
1423                         *res_x = tile_y;
1424                         *res_y = image_w - tile_x - tile_w;
1425                         break;
1426                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1427                         *res_x = image_h - tile_y - tile_h;
1428                         *res_y = image_w - tile_x - tile_w;
1429                         break;
1430                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1431                         /* rotated 90 */
1432                         *res_x = image_h - tile_y - tile_h;
1433                         *res_y = tile_x;
1434                         break;
1435                 default:
1436                         /* The other values are out of range */
1437                         break;
1438                 }
1439 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1440 }
1441
1442 void pr_tile_region_map_orientation(gint orientation,
1443                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1444                                      gint tile_w, gint tile_h,
1445                                      gint area_w, gint area_h,
1446                                      gint *res_x, gint *res_y,
1447                                      gint *res_w, gint *res_h)
1448 {
1449         *res_x = area_x;
1450         *res_y = area_y;
1451         *res_w = area_w;
1452         *res_h = area_h;
1453
1454         switch (orientation)
1455                 {
1456                 case EXIF_ORIENTATION_TOP_LEFT:
1457                         /* normal -- nothing to do */
1458                         break;
1459                 case EXIF_ORIENTATION_TOP_RIGHT:
1460                         /* mirrored */
1461                         *res_x = tile_w - area_x - area_w;
1462                         break;
1463                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1464                         /* upside down */
1465                         *res_x = tile_w - area_x - area_w;
1466                         *res_y = tile_h - area_y - area_h;
1467                         break;
1468                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1469                         /* flipped */
1470                         *res_y = tile_h - area_y - area_h;
1471                         break;
1472                 case EXIF_ORIENTATION_LEFT_TOP:
1473                         *res_x = area_y;
1474                         *res_y = area_x;
1475                         *res_w = area_h;
1476                         *res_h = area_w;
1477                         break;
1478                 case EXIF_ORIENTATION_RIGHT_TOP:
1479                         /* rotated -90 (270) */
1480                         *res_x = area_y;
1481                         *res_y = tile_w - area_x - area_w;
1482                         *res_w = area_h;
1483                         *res_h = area_w;
1484                         break;
1485                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1486                         *res_x = tile_h - area_y - area_h;
1487                         *res_y = tile_w - area_x - area_w;
1488                         *res_w = area_h;
1489                         *res_h = area_w;
1490                         break;
1491                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1492                         /* rotated 90 */
1493                         *res_x = tile_h - area_y - area_h;
1494                         *res_y = area_x;
1495                         *res_w = area_h;
1496                         *res_h = area_w;
1497                         break;
1498                 default:
1499                         /* The other values are out of range */
1500                         break;
1501                 }
1502 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1503 }
1504
1505 void pr_coords_map_orientation_reverse(gint orientation,
1506                                      gint area_x, gint area_y,
1507                                      gint tile_w, gint tile_h,
1508                                      gint area_w, gint area_h,
1509                                      gint *res_x, gint *res_y,
1510                                      gint *res_w, gint *res_h)
1511 {
1512         *res_x = area_x;
1513         *res_y = area_y;
1514         *res_w = area_w;
1515         *res_h = area_h;
1516
1517         switch (orientation)
1518                 {
1519                 case EXIF_ORIENTATION_TOP_LEFT:
1520                         /* normal -- nothing to do */
1521                         break;
1522                 case EXIF_ORIENTATION_TOP_RIGHT:
1523                         /* mirrored */
1524                         *res_x = tile_w - area_x - area_w;
1525                         break;
1526                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1527                         /* upside down */
1528                         *res_x = tile_w - area_x - area_w;
1529                         *res_y = tile_h - area_y - area_h;
1530                         break;
1531                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1532                         /* flipped */
1533                         *res_y = tile_h - area_y - area_h;
1534                         break;
1535                 case EXIF_ORIENTATION_LEFT_TOP:
1536                         *res_x = area_y;
1537                         *res_y = area_x;
1538                         *res_w = area_h;
1539                         *res_h = area_w;
1540                         break;
1541                 case EXIF_ORIENTATION_RIGHT_TOP:
1542                         /* rotated -90 (270) */
1543                         *res_x = tile_w - area_y - area_h;
1544                         *res_y = area_x;
1545                         *res_w = area_h;
1546                         *res_h = area_w;
1547                         break;
1548                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1549                         *res_x = tile_w - area_y - area_h;
1550                         *res_y = tile_h - area_x - area_w;
1551                         *res_w = area_h;
1552                         *res_h = area_w;
1553                         break;
1554                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1555                         /* rotated 90 */
1556                         *res_x = area_y;
1557                         *res_y = tile_h - area_x - area_w;
1558                         *res_w = area_h;
1559                         *res_h = area_w;
1560                         break;
1561                 default:
1562                         /* The other values are out of range */
1563                         break;
1564                 }
1565 }
1566
1567
1568
1569 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1570 {
1571         gint src_x, src_y;
1572         if (!pr->width || !pr->height) return;
1573
1574         /*
1575          * Update norm_center only if the image is bigger than the window.
1576          * With this condition the stored center survives also a temporary display
1577          * of the "broken image" icon.
1578         */
1579
1580         if (pr->width > pr->viewport_width)
1581                 {
1582                 src_x = pr->x_scroll + pr->vis_width / 2;
1583                 pr->norm_center_x = (gdouble)src_x / pr->width;
1584                 }
1585
1586         if (pr->height > pr->viewport_height)
1587                 {
1588                 src_y = pr->y_scroll + pr->vis_height / 2;
1589                 pr->norm_center_y = (gdouble)src_y / pr->height;
1590                 }
1591 }
1592
1593
1594 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1595 {
1596         gint old_xs;
1597         gint old_ys;
1598
1599         if (pr->zoom == 0.0)
1600                 {
1601                 pr->x_scroll = 0;
1602                 pr->y_scroll = 0;
1603
1604                 return FALSE;
1605                 }
1606
1607         old_xs = pr->x_scroll;
1608         old_ys = pr->y_scroll;
1609
1610         if (pr->x_offset > 0)
1611                 {
1612                 pr->x_scroll = 0;
1613                 }
1614         else
1615                 {
1616                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1617                 }
1618
1619         if (pr->y_offset > 0)
1620                 {
1621                 pr->y_scroll = 0;
1622                 }
1623         else
1624                 {
1625                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1626                 }
1627
1628         pixbuf_renderer_sync_scroll_center(pr);
1629
1630         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1631 }
1632
1633 static gboolean pr_size_clamp(PixbufRenderer *pr)
1634 {
1635         gint old_vw, old_vh;
1636
1637         old_vw = pr->vis_width;
1638         old_vh = pr->vis_height;
1639
1640         if (pr->width < pr->viewport_width)
1641                 {
1642                 pr->vis_width = pr->width;
1643                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1644                 }
1645         else
1646                 {
1647                 pr->vis_width = pr->viewport_width;
1648                 pr->x_offset = 0;
1649                 }
1650
1651         if (pr->height < pr->viewport_height)
1652                 {
1653                 pr->vis_height = pr->height;
1654                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1655                 }
1656         else
1657                 {
1658                 pr->vis_height = pr->viewport_height;
1659                 pr->y_offset = 0;
1660                 }
1661
1662         pixbuf_renderer_sync_scroll_center(pr);
1663
1664         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1665 }
1666
1667 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1668                               PrZoomFlags flags, gboolean *redrawn)
1669 {
1670         gint w, h;
1671         gdouble scale;
1672         gboolean invalid;
1673         gboolean force = !!(flags & PR_ZOOM_FORCE);
1674         gboolean new = !!(flags & PR_ZOOM_NEW);
1675         gboolean invalidate = !!(flags & PR_ZOOM_INVALIDATE);
1676         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1677
1678         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1679
1680         if (pr->zoom == zoom && !force) return FALSE;
1681
1682         w = pr->image_width;
1683         h = pr->image_height;
1684
1685         if (zoom == 0.0 && !pr->pixbuf)
1686                 {
1687                 scale = 1.0;
1688                 }
1689         else if (zoom == 0.0)
1690                 {
1691                 gint max_w;
1692                 gint max_h;
1693                 gboolean sizeable;
1694
1695                 sizeable = (new && pr_parent_window_sizable(pr));
1696
1697                 if (sizeable)
1698                         {
1699                         max_w = gdk_screen_width();
1700                         max_h = gdk_screen_height();
1701
1702                         if (pr->window_limit)
1703                                 {
1704                                 max_w = max_w * pr->window_limit_size / 100;
1705                                 max_h = max_h * pr->window_limit_size / 100;
1706                                 }
1707                         }
1708                 else
1709                         {
1710                         max_w = pr->viewport_width;
1711                         max_h = pr->viewport_height;
1712                         }
1713
1714                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1715                         {
1716                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1717                                 {
1718                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1719                                 h = max_h;
1720                                 w = w * scale + 0.5;
1721                                 if (w > max_w) w = max_w;
1722                                 }
1723                         else
1724                                 {
1725                                 scale = (gdouble)max_w / w;
1726                                 w = max_w;
1727                                 h = h * scale * pr->aspect_ratio + 0.5;
1728                                 if (h > max_h) h = max_h;
1729                                 }
1730
1731                         if (pr->autofit_limit)
1732                                 {
1733                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1734                                 w = w * factor + 0.5;
1735                                 h = h * factor + 0.5;
1736                                 scale = scale * factor;
1737                                 }
1738
1739                         if (w < 1) w = 1;
1740                         if (h < 1) h = 1;
1741                         }
1742                 else
1743                         {
1744                         scale = 1.0;
1745                         }
1746                 }
1747         else if (zoom > 0.0) /* zoom orig, in */
1748                 {
1749                 scale = zoom;
1750                 w = w * scale;
1751                 h = h * scale * pr->aspect_ratio;
1752                 }
1753         else /* zoom out */
1754                 {
1755                 scale = 1.0 / (0.0 - zoom);
1756                 w = w * scale;
1757                 h = h * scale * pr->aspect_ratio;
1758                 }
1759
1760         invalid = (pr->width != w || pr->height != h);
1761
1762         pr->zoom = zoom;
1763         pr->width = w;
1764         pr->height = h;
1765         pr->scale = scale;
1766
1767         if (invalidate || invalid)
1768                 {
1769                 pr->renderer->invalidate_all(pr->renderer);
1770                 if (pr->renderer2) pr->renderer2->invalidate_all(pr->renderer2);
1771                 if (!lazy) pr_redraw(pr, TRUE);
1772                 }
1773         if (redrawn) *redrawn = (invalidate || invalid);
1774
1775         pixbuf_renderer_sync_scroll_center(pr);
1776
1777         return TRUE;
1778 }
1779
1780 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1781                          PrZoomFlags flags, gint px, gint py)
1782 {
1783         gdouble old_scale;
1784         gint old_cx, old_cy;
1785         gboolean clamped;
1786         gboolean sized;
1787         gboolean redrawn = FALSE;
1788         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1789         gboolean force = !!(flags & PR_ZOOM_FORCE);
1790         gboolean new = !!(flags & PR_ZOOM_NEW);
1791         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1792         PrZoomFlags clamp_flags = flags;
1793         gdouble old_center_x = pr->norm_center_x;
1794         gdouble old_center_y = pr->norm_center_y;
1795
1796         old_scale = pr->scale;
1797         if (center_point)
1798                 {
1799                 px = CLAMP(px, 0, pr->width);
1800                 py = CLAMP(py, 0, pr->height);
1801                 old_cx = pr->x_scroll + (px - pr->x_offset);
1802                 old_cy = pr->y_scroll + (py - pr->y_offset);
1803                 }
1804         else
1805                 {
1806                 px = py = 0;
1807                 old_cx = pr->x_scroll + pr->vis_width / 2;
1808                 old_cy = pr->y_scroll + pr->vis_height / 2;
1809                 }
1810
1811         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1812         if (lazy) clamp_flags |= PR_ZOOM_LAZY;
1813         if (!pr_zoom_clamp(pr, zoom, clamp_flags, &redrawn)) return;
1814
1815         clamped = pr_size_clamp(pr);
1816         sized = pr_parent_window_resize(pr, pr->width, pr->height);
1817
1818         if (force && new)
1819                 {
1820                 switch (pr->scroll_reset)
1821                         {
1822                         case PR_SCROLL_RESET_NOCHANGE:
1823                                 /* maintain old scroll position */
1824                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1825                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1826                                 break;
1827                         case PR_SCROLL_RESET_CENTER:
1828                                 /* center new image */
1829                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1830                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1831                                 break;
1832                         case PR_SCROLL_RESET_TOPLEFT:
1833                         default:
1834                                 /* reset to upper left */
1835                                 pr->x_scroll = 0;
1836                                 pr->y_scroll = 0;
1837                                 break;
1838                         }
1839                 }
1840         else
1841                 {
1842                 /* user zoom does not force, so keep visible center point */
1843                 if (center_point)
1844                         {
1845                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1846                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1847                         }
1848                 else
1849                         {
1850                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1851                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1852                         }
1853                 }
1854
1855         pr_scroll_clamp(pr);
1856
1857         /* If the window was not sized, redraw the image - we know there will be no size/expose signal.
1858          * But even if a size is claimed, there is no guarantee that the window manager will allow it,
1859          * so redraw the window anyway :/
1860          */
1861         if (sized || clamped) pr_border_clear(pr);
1862
1863         if (lazy)
1864                 {
1865                 pr->renderer->queue_clear(pr->renderer);
1866                 if (pr->renderer2) pr->renderer2->queue_clear(pr->renderer2);
1867                 }
1868         else
1869                 {
1870                 pr_redraw(pr, redrawn);
1871                 }
1872
1873         pr_scroll_notify_signal(pr);
1874         pr_zoom_signal(pr);
1875         pr_update_signal(pr);
1876 }
1877
1878 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1879 {
1880         gboolean zoom_changed = FALSE;
1881
1882         gint new_viewport_width = new_width;
1883         gint new_viewport_height = new_height;
1884
1885         if (!pr->stereo_temp_disable)
1886                 {
1887                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1888                         {
1889                         new_viewport_width = new_width / 2;
1890                         }
1891                 else if (pr->stereo_mode & PR_STEREO_VERT)
1892                         {
1893                         new_viewport_height = new_height / 2;
1894                         }
1895                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1896                         {
1897                         new_viewport_width = pr->stereo_fixed_width;
1898                         new_viewport_height = pr->stereo_fixed_height;
1899                         }
1900                 }
1901
1902         if (pr->window_width == new_width && pr->window_height == new_height &&
1903             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1904
1905         pr->window_width = new_width;
1906         pr->window_height = new_height;
1907         pr->viewport_width = new_viewport_width;
1908         pr->viewport_height = new_viewport_height;
1909
1910         if (pr->zoom == 0.0)
1911                 {
1912                 gdouble old_scale = pr->scale;
1913                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE, NULL);
1914                 zoom_changed = (old_scale != pr->scale);
1915                 }
1916
1917         pr_size_clamp(pr);
1918         pr_scroll_clamp(pr);
1919
1920         pr->renderer->update_sizes(pr->renderer);
1921         if (pr->renderer2) pr->renderer2->update_sizes(pr->renderer2);
1922
1923         /* ensure scroller remains visible */
1924         if (pr->scroller_overlay != -1)
1925                 {
1926                 gboolean update = FALSE;
1927
1928                 if (pr->scroller_x > new_width)
1929                         {
1930                         pr->scroller_x = new_width;
1931                         pr->scroller_xpos = new_width;
1932                         update = TRUE;
1933                         }
1934                 if (pr->scroller_y > new_height)
1935                         {
1936                         pr->scroller_y = new_height;
1937                         pr->scroller_ypos = new_height;
1938                         update = TRUE;
1939                         }
1940
1941                 if (update)
1942                         {
1943                         GdkPixbuf *pixbuf;
1944
1945                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1946                                 {
1947                                 gint w, h;
1948
1949                                 w = gdk_pixbuf_get_width(pixbuf);
1950                                 h = gdk_pixbuf_get_height(pixbuf);
1951                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1952                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1953                                 }
1954                         }
1955                 }
1956
1957         pr_border_clear(pr);
1958
1959         pr_scroll_notify_signal(pr);
1960         if (zoom_changed) pr_zoom_signal(pr);
1961         pr_update_signal(pr);
1962 }
1963
1964 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1965 {
1966         PixbufRenderer *pr = data;
1967
1968         pr_size_sync(pr, allocation->width, allocation->height);
1969 }
1970
1971 static void pixbuf_renderer_paint(PixbufRenderer *pr, GdkRectangle *area)
1972 {
1973         gint x, y;
1974
1975         pr->renderer->redraw(pr->renderer, area->x, area->y, area->width, area->height,
1976                               FALSE, TILE_RENDER_ALL, FALSE, FALSE);
1977         if (pr->renderer2)
1978                 {
1979                 pr->renderer2->redraw(pr->renderer2, area->x, area->y, area->width, area->height,
1980                               FALSE, TILE_RENDER_ALL, FALSE, FALSE);
1981                 }
1982 }
1983
1984 /*
1985  *-------------------------------------------------------------------
1986  * scrolling
1987  *-------------------------------------------------------------------
1988  */
1989
1990 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1991 {
1992         gint old_x, old_y;
1993         gint x_off, y_off;
1994
1995         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1996
1997         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1998
1999         old_x = pr->x_scroll;
2000         old_y = pr->y_scroll;
2001
2002         pr->x_scroll += x;
2003         pr->y_scroll += y;
2004
2005         pr_scroll_clamp(pr);
2006
2007         pixbuf_renderer_sync_scroll_center(pr);
2008
2009         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
2010
2011         pr_scroll_notify_signal(pr);
2012
2013         x_off = pr->x_scroll - old_x;
2014         y_off = pr->y_scroll - old_y;
2015
2016         pr->renderer->scroll(pr->renderer, x_off, y_off);
2017         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
2018 }
2019
2020 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
2021                                      gdouble x_align, gdouble y_align)
2022 {
2023         gint px, py;
2024         gint ax, ay;
2025
2026         x_align = CLAMP(x_align, 0.0, 1.0);
2027         y_align = CLAMP(y_align, 0.0, 1.0);
2028
2029         ax = (gdouble)pr->vis_width * x_align;
2030         ay = (gdouble)pr->vis_height * y_align;
2031
2032         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
2033         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
2034
2035         pixbuf_renderer_scroll(pr, px, py);
2036 }
2037
2038 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
2039
2040 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
2041 {
2042         *x = pr->norm_center_x;
2043         *y = pr->norm_center_y;
2044 }
2045
2046 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
2047 {
2048         gdouble dst_x, dst_y;
2049
2050         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
2051         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
2052
2053         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
2054         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
2055
2056         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
2057 }
2058
2059 /*
2060  *-------------------------------------------------------------------
2061  * mouse
2062  *-------------------------------------------------------------------
2063  */
2064
2065 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2066 {
2067         PixbufRenderer *pr;
2068         gint accel;
2069
2070         /* This is a hack, but work far the best, at least for single pointer systems.
2071          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
2072         gint x, y;
2073         gdk_window_get_pointer (bevent->window, &x, &y, NULL);
2074         bevent->x = x;
2075         bevent->y = y;
2076
2077         pr = PIXBUF_RENDERER(widget);
2078
2079         if (pr->scroller_id)
2080                 {
2081                 pr->scroller_xpos = bevent->x;
2082                 pr->scroller_ypos = bevent->y;
2083                 }
2084
2085         pr->x_mouse = bevent->x;
2086         pr->y_mouse = bevent->y;
2087         pr_update_pixel_signal(pr);
2088
2089         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
2090
2091         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2092                 {
2093                 pr->drag_moved++;
2094                 }
2095         else
2096                 {
2097                 widget_set_cursor(widget, GDK_FLEUR);
2098                 }
2099
2100         if (bevent->state & GDK_CONTROL_MASK)
2101                 {
2102                 accel = PR_PAN_SHIFT_MULTIPLIER;
2103                 }
2104         else
2105                 {
2106                 accel = 1;
2107                 }
2108
2109         /* do the scroll */
2110         pixbuf_renderer_scroll(pr, (pr->drag_last_x - bevent->x) * accel,
2111                                (pr->drag_last_y - bevent->y) * accel);
2112
2113         pr_drag_signal(pr, bevent);
2114
2115         pr->drag_last_x = bevent->x;
2116         pr->drag_last_y = bevent->y;
2117
2118         /* This is recommended by the GTK+ documentation, but does not work properly.
2119          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2120          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2121          */
2122         /* gdk_event_request_motions (bevent); */
2123         return FALSE;
2124 }
2125
2126 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2127 {
2128         PixbufRenderer *pr;
2129
2130         pr = PIXBUF_RENDERER(widget);
2131         pr->x_mouse = -1;
2132         pr->y_mouse = -1;
2133
2134         pr_update_pixel_signal(pr);
2135         return FALSE;
2136 }
2137
2138 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2139 {
2140         PixbufRenderer *pr;
2141         GtkWidget *parent;
2142
2143         pr = PIXBUF_RENDERER(widget);
2144
2145         if (pr->scroller_id) return TRUE;
2146
2147         switch (bevent->button)
2148                 {
2149                 case MOUSE_BUTTON_LEFT:
2150                         pr->in_drag = TRUE;
2151                         pr->drag_last_x = bevent->x;
2152                         pr->drag_last_y = bevent->y;
2153                         pr->drag_moved = 0;
2154                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2155                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2156                                          NULL, NULL, bevent->time);
2157                         gtk_grab_add(widget);
2158                         break;
2159                 case MOUSE_BUTTON_MIDDLE:
2160                         pr->drag_moved = 0;
2161                         break;
2162                 case MOUSE_BUTTON_RIGHT:
2163                         pr_clicked_signal(pr, bevent);
2164                         break;
2165                 default:
2166                         break;
2167                 }
2168
2169         parent = gtk_widget_get_parent(widget);
2170 #if GTK_CHECK_VERSION(2,20,0)
2171         if (widget && gtk_widget_get_can_focus(parent))
2172 #else
2173         if (widget && GTK_WIDGET_CAN_FOCUS(parent))
2174 #endif
2175                 {
2176                 gtk_widget_grab_focus(parent);
2177                 }
2178
2179         return FALSE;
2180 }
2181
2182 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2183 {
2184         PixbufRenderer *pr;
2185
2186         pr = PIXBUF_RENDERER(widget);
2187
2188         if (pr->scroller_id)
2189                 {
2190                 pr_scroller_stop(pr);
2191                 return TRUE;
2192                 }
2193
2194 #if GTK_CHECK_VERSION(2,20,0)
2195         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2196 #else
2197         if (gdk_pointer_is_grabbed() && GTK_WIDGET_HAS_GRAB(pr))
2198 #endif
2199                 {
2200                 gtk_grab_remove(widget);
2201                 gdk_pointer_ungrab(bevent->time);
2202                 widget_set_cursor(widget, -1);
2203                 }
2204
2205         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2206                 {
2207                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2208                         {
2209                         pr_scroller_start(pr, bevent->x, bevent->y);
2210                         }
2211                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2212                         {
2213                         pr_clicked_signal(pr, bevent);
2214                         }
2215                 }
2216
2217         pr->in_drag = FALSE;
2218
2219         return FALSE;
2220 }
2221
2222 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2223 {
2224         PixbufRenderer *pr;
2225
2226         pr = PIXBUF_RENDERER(widget);
2227
2228         if (pr->scroller_id)
2229                 {
2230                 pr->scroller_xpos = pr->scroller_x;
2231                 pr->scroller_ypos = pr->scroller_y;
2232                 pr->scroller_xinc = 0;
2233                 pr->scroller_yinc = 0;
2234                 }
2235
2236         return FALSE;
2237 }
2238
2239 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2240 {
2241         PixbufRenderer *pr;
2242
2243         pr = PIXBUF_RENDERER(widget);
2244
2245         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2246 }
2247
2248 static void pr_signals_connect(PixbufRenderer *pr)
2249 {
2250         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2251                          G_CALLBACK(pr_mouse_motion_cb), pr);
2252         g_signal_connect(G_OBJECT(pr), "button_press_event",
2253                          G_CALLBACK(pr_mouse_press_cb), pr);
2254         g_signal_connect(G_OBJECT(pr), "button_release_event",
2255                          G_CALLBACK(pr_mouse_release_cb), pr);
2256         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2257                          G_CALLBACK(pr_mouse_leave_cb), pr);
2258         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2259                          G_CALLBACK(pr_leave_notify_cb), pr);
2260
2261         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2262                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
2263                                               GDK_LEAVE_NOTIFY_MASK);
2264
2265         g_signal_connect(G_OBJECT(pr), "drag_begin",
2266                          G_CALLBACK(pr_mouse_drag_cb), pr);
2267
2268 }
2269
2270 /*
2271  *-------------------------------------------------------------------
2272  * stereo support
2273  *-------------------------------------------------------------------
2274  */
2275
2276 #define COLOR_BYTES 3   /* rgb */
2277 static void pr_create_anaglyph_RC(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2278 {
2279         gint srs, drs;
2280         guchar *s_pix, *d_pix;
2281         guchar *sp, *dp;
2282         guchar *spi, *dpi;
2283         gint i, j;
2284
2285         srs = gdk_pixbuf_get_rowstride(right);
2286         s_pix = gdk_pixbuf_get_pixels(right);
2287         spi = s_pix + (x * COLOR_BYTES);
2288
2289         drs = gdk_pixbuf_get_rowstride(pixbuf);
2290         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2291         dpi =  d_pix + x * COLOR_BYTES;
2292
2293         for (i = y; i < y + h; i++)
2294                 {
2295                 sp = spi + (i * srs);
2296                 dp = dpi + (i * drs);
2297                 for (j = 0; j < w; j++)
2298                         {
2299                         *dp = *sp; /* copy red channel */
2300                         sp += COLOR_BYTES;
2301                         dp += COLOR_BYTES;
2302                         }
2303                 }
2304 }
2305
2306 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2307 {
2308         gint srs, drs;
2309         guchar *s_pix, *d_pix;
2310         guchar *sp, *dp;
2311         guchar *spi, *dpi;
2312         gint i, j;
2313         const double gc[3] = {0.299, 0.587, 0.114};
2314
2315         srs = gdk_pixbuf_get_rowstride(right);
2316         s_pix = gdk_pixbuf_get_pixels(right);
2317         spi = s_pix + (x * COLOR_BYTES);
2318
2319         drs = gdk_pixbuf_get_rowstride(pixbuf);
2320         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2321         dpi =  d_pix + x * COLOR_BYTES;
2322
2323         for (i = y; i < y + h; i++)
2324                 {
2325                 sp = spi + (i * srs);
2326                 dp = dpi + (i * drs);
2327                 for (j = 0; j < w; j++)
2328                         {
2329                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2330                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2331                         dp[0] = g2; /* red channel from sp */
2332                         dp[1] = g1; /* green and blue from dp */
2333                         dp[2] = g1;
2334                         sp += COLOR_BYTES;
2335                         dp += COLOR_BYTES;
2336                         }
2337                 }
2338 }
2339
2340 const double pr_dubois_matrix[3][6] = {
2341         { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2342         {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2343         {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}
2344         };
2345
2346 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2347 {
2348         gint srs, drs;
2349         guchar *s_pix, *d_pix;
2350         guchar *sp, *dp;
2351         guchar *spi, *dpi;
2352         gint i, j, k;
2353
2354         srs = gdk_pixbuf_get_rowstride(right);
2355         s_pix = gdk_pixbuf_get_pixels(right);
2356         spi = s_pix + (x * COLOR_BYTES);
2357
2358         drs = gdk_pixbuf_get_rowstride(pixbuf);
2359         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2360         dpi =  d_pix + x * COLOR_BYTES;
2361
2362         for (i = y; i < y + h; i++)
2363                 {
2364                 sp = spi + (i * srs);
2365                 dp = dpi + (i * drs);
2366                 for (j = 0; j < w; j++)
2367                         {
2368                         double res[3];
2369                         for (k = 0; k < 3; k++)
2370                                 {
2371                                 const double *m = pr_dubois_matrix[k];
2372                                 res[k] = sp[0] * m[0] + sp[1] * m[1] + sp[2] * m[2] + dp[0] * m[3] + dp[1] * m[4] + dp[2] * m[5];
2373                                 if (res[k] < 0.0) res[k] = 0;
2374                                 if (res[k] > 255.0) res[k] = 255.0;
2375                                 }
2376                         dp[0] = res[0];
2377                         dp[1] = res[1];
2378                         dp[2] = res[2];
2379                         sp += COLOR_BYTES;
2380                         dp += COLOR_BYTES;
2381                         }
2382                 }
2383 }
2384
2385 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2386 {
2387         if (mode & PR_STEREO_ANAGLYPH_RC)
2388                 pr_create_anaglyph_RC(pixbuf, right, x, y, w, h);
2389         else if (mode & PR_STEREO_ANAGLYPH_GRAY)
2390                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h);
2391         else if (mode & PR_STEREO_ANAGLYPH_DB)
2392                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h);
2393 }
2394
2395 /*
2396  *-------------------------------------------------------------------
2397  * public
2398  *-------------------------------------------------------------------
2399  */
2400 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2401 {
2402         pr->stereo_pixbuf_offset_left = 0;
2403         pr->stereo_pixbuf_offset_right = 0;
2404         if (!pr->pixbuf) return;
2405         switch (pr->orientation)
2406                 {
2407                 case EXIF_ORIENTATION_LEFT_TOP:
2408                 case EXIF_ORIENTATION_RIGHT_TOP:
2409                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2410                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2411                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2412                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2413                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2414                                 {
2415                                 pr->image_height /= 2;
2416                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2417                                 }
2418                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2419                                 {
2420                                 pr->image_height /= 2;
2421                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2422                                 }
2423
2424                         break;
2425                 default:
2426                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2427                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2428                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2429                                 {
2430                                 pr->image_width /= 2;
2431                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2432                                 }
2433                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2434                                 {
2435                                 pr->image_width /= 2;
2436                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2437                                 }
2438                 }
2439 }
2440
2441 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2442 {
2443         if (pixbuf) g_object_ref(pixbuf);
2444         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2445         pr->pixbuf = pixbuf;
2446
2447         if (!pr->pixbuf)
2448                 {
2449                 GtkWidget *box;
2450
2451                 /* no pixbuf so just clear the window */
2452                 pr->image_width = 0;
2453                 pr->image_height = 0;
2454                 pr->scale = 1.0;
2455                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2456                                     and used for pixbuf_renderer_zoom_get */
2457
2458                 box = GTK_WIDGET(pr);
2459
2460 #if GTK_CHECK_VERSION(2,20,0)
2461                 if (gtk_widget_get_realized(box))
2462 #else
2463                 if (GTK_WIDGET_REALIZED(box))
2464 #endif
2465                         {
2466 #if !GTK_CHECK_VERSION(3,0,0)
2467                         gdk_window_clear(gtk_widget_get_window(box));
2468 #endif
2469                         pr->renderer->overlay_draw(pr->renderer, 0, 0, pr->viewport_width, pr->viewport_height);
2470                         if (pr->renderer2) pr->renderer2->overlay_draw(pr->renderer2, 0, 0, pr->viewport_width, pr->viewport_height);
2471                         }
2472
2473                 pr_update_signal(pr);
2474
2475                 return;
2476                 }
2477
2478         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2479                 {
2480                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2481                 pr_stereo_temp_disable(pr, disable);
2482                 }
2483
2484         pr_pixbuf_size_sync(pr);
2485         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2486 }
2487
2488 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2489 {
2490         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2491
2492         pr_source_tile_unset(pr);
2493
2494         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2495
2496         pr_update_signal(pr);
2497 }
2498
2499 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2500 {
2501         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2502
2503         pr_source_tile_unset(pr);
2504
2505         pr->orientation = orientation;
2506         pr->stereo_data = stereo_data;
2507         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2508
2509         pr_update_signal(pr);
2510 }
2511
2512 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2513 {
2514         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2515
2516         return pr->pixbuf;
2517 }
2518
2519 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2520 {
2521         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2522
2523         pr->orientation = orientation;
2524
2525         pr_pixbuf_size_sync(pr);
2526         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2527 }
2528
2529 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2530 {
2531         if (!pr) return 1;
2532         return pr->orientation;
2533 }
2534
2535 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2536 {
2537         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2538
2539         pr->stereo_data = stereo_data;
2540
2541         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2542                 {
2543                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2544                 pr_stereo_temp_disable(pr, disable);
2545                 }
2546         pr_pixbuf_size_sync(pr);
2547         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2548 }
2549
2550 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2551 {
2552         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2553
2554         pr->func_post_process = func;
2555         pr->post_process_user_data = user_data;
2556         pr->post_process_slow = func && slow;
2557
2558 }
2559
2560
2561 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2562 {
2563         GObject *object;
2564         PixbufRendererScrollResetType scroll_reset;
2565
2566         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2567         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2568
2569         if (pr == source) return;
2570
2571         object = G_OBJECT(pr);
2572
2573         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2574         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2575         g_object_set(object, "loading", source->loading, NULL);
2576
2577         pr->complete = source->complete;
2578
2579         pr->x_scroll = source->x_scroll;
2580         pr->y_scroll = source->y_scroll;
2581         pr->x_mouse  = source->x_mouse;
2582         pr->y_mouse  = source->y_mouse;
2583
2584         scroll_reset = pr->scroll_reset;
2585         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2586
2587         pr->func_post_process = source->func_post_process;
2588         pr->post_process_user_data = source->post_process_user_data;
2589         pr->post_process_slow = source->post_process_slow;
2590         pr->orientation = source->orientation;
2591         pr->stereo_data = source->stereo_data;
2592
2593         if (source->source_tiles_enabled)
2594                 {
2595                 pr_source_tile_unset(pr);
2596
2597                 pr->source_tiles_enabled = source->source_tiles_enabled;
2598                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2599                 pr->source_tile_width = source->source_tile_width;
2600                 pr->source_tile_height = source->source_tile_height;
2601                 pr->image_width = source->image_width;
2602                 pr->image_height = source->image_height;
2603
2604                 pr->func_tile_request = source->func_tile_request;
2605                 pr->func_tile_dispose = source->func_tile_dispose;
2606                 pr->func_tile_data = source->func_tile_data;
2607
2608                 pr->source_tiles = source->source_tiles;
2609                 source->source_tiles = NULL;
2610
2611                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2612                 pr_redraw(pr, TRUE);
2613                 }
2614         else
2615                 {
2616                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2617                 }
2618
2619         pr->scroll_reset = scroll_reset;
2620
2621         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2622 //      pr_queue_clear(source);
2623 //      pr_tile_free_all(source);
2624 }
2625
2626 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2627 {
2628         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2629
2630         if (pr->source_tiles_enabled)
2631                 {
2632                 pr_source_tile_changed(pr, x, y, w, h);
2633                 }
2634
2635         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2636         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2637 }
2638
2639 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2640 {
2641         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2642
2643         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2644 }
2645
2646 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2647 {
2648         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2649
2650         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2651 }
2652
2653 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2654 {
2655         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2656
2657         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2658 }
2659
2660 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2661 {
2662         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2663
2664         return pr->zoom;
2665 }
2666
2667 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2668 {
2669         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2670
2671         return pr->scale;
2672 }
2673
2674 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2675 {
2676         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2677
2678         if (min > 1.0 || max < 1.0) return;
2679         if (min < 1.0 && min > -1.0) return;
2680         if (min < -200.0 || max > 200.0) return;
2681
2682         if (pr->zoom_min != min)
2683                 {
2684                 pr->zoom_min = min;
2685                 g_object_notify(G_OBJECT(pr), "zoom_min");
2686                 }
2687         if (pr->zoom_max != max)
2688                 {
2689                 pr->zoom_max = max;
2690                 g_object_notify(G_OBJECT(pr), "zoom_max");
2691                 }
2692 }
2693
2694 static void pr_stereo_set(PixbufRenderer *pr)
2695 {
2696         if (!pr->renderer) pr->renderer = (void *)renderer_tiles_new(pr);
2697
2698         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2699
2700         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2701                 {
2702                 if (!pr->renderer2) pr->renderer2 = (void *)renderer_tiles_new(pr);
2703                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2704                 }
2705         else
2706                 {
2707                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2708                 pr->renderer2 = NULL;
2709                 }
2710         if (pr->stereo_mode & PR_STEREO_HALF)
2711                 {
2712                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2713                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2714                 else pr->aspect_ratio = 1.0;
2715                 }
2716         else
2717                 {
2718                 pr->aspect_ratio = 1.0;
2719                 }
2720 }
2721
2722 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2723 {
2724         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2725         pr->stereo_mode = stereo_mode;
2726         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2727
2728         pr->stereo_temp_disable = FALSE;
2729
2730         pr_stereo_set(pr);
2731
2732         if (redraw)
2733                 {
2734                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2735                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2736                 }
2737 }
2738
2739 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2740 {
2741         pr->stereo_fixed_width = width;
2742         pr->stereo_fixed_height = height;
2743         pr->stereo_fixed_x_left = x1;
2744         pr->stereo_fixed_y_left = y1;
2745         pr->stereo_fixed_x_right = x2;
2746         pr->stereo_fixed_y_right = y2;
2747 }
2748
2749 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2750 {
2751         return pr->stereo_mode;
2752 }
2753
2754 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2755 {
2756         if (pr->stereo_temp_disable == disable) return;
2757         pr->stereo_temp_disable = disable;
2758         if (disable)
2759                 {
2760                 if (!pr->renderer) pr->renderer = (void *)renderer_tiles_new(pr);
2761                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2762                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2763                 pr->renderer2 = NULL;
2764                 pr->aspect_ratio = 1.0;
2765                 }
2766         else
2767                 {
2768                 pr_stereo_set(pr);
2769                 }
2770         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2771 }
2772
2773 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2774                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2775 {
2776         GdkPixbuf *pb = pr->pixbuf;
2777         gint p_alpha, prs;
2778         guchar *p_pix, *pp;
2779         gint map_x, map_y, map_w, map_h;
2780
2781         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2782         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2783
2784         if (!pr->pixbuf && !pr->source_tiles_enabled)
2785                 {
2786                 *r_mouse = -1;
2787                 *g_mouse = -1;
2788                 *b_mouse = -1;
2789                 return FALSE;
2790                 }
2791
2792         if (!pb) return FALSE;
2793
2794         pr_tile_region_map_orientation(pr->orientation,
2795                                         x_pixel, y_pixel,
2796                                         pr->image_width, pr->image_height,
2797                                         1, 1, /*single pixel */
2798                                         &map_x, &map_y,
2799                                         &map_w, &map_h);
2800
2801         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2802         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2803
2804         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2805         prs = gdk_pixbuf_get_rowstride(pb);
2806         p_pix = gdk_pixbuf_get_pixels(pb);
2807
2808         pp = p_pix + map_y * prs + (map_x * (p_alpha ? 4 : 3));
2809         *r_mouse = *pp;
2810         pp++;
2811         *g_mouse = *pp;
2812         pp++;
2813         *b_mouse = *pp;
2814
2815         return TRUE;
2816 }
2817
2818 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2819 {
2820         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2821
2822         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2823         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2824
2825         if (!pr->pixbuf && !pr->source_tiles_enabled)
2826                 {
2827                 *x_pixel_return = -1;
2828                 *y_pixel_return = -1;
2829                 return FALSE;
2830                 }
2831
2832         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2833         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2834         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2835         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2836
2837         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2838                 {
2839                 /* mouse is not on pr */
2840                 x_pixel = y_pixel = -1;
2841                 }
2842
2843         *x_pixel_return = x_pixel;
2844         *y_pixel_return = y_pixel;
2845
2846         return TRUE;
2847 }
2848
2849 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2850 {
2851         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2852         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2853
2854         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2855                 {
2856                 *width = 0;
2857                 *height = 0;
2858                 return FALSE;
2859                 }
2860
2861         *width = pr->image_width;
2862         *height = pr->image_height;
2863         return TRUE;
2864 }
2865
2866 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2867 {
2868         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2869         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2870
2871         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2872                 {
2873                 *width = 0;
2874                 *height = 0;
2875                 return FALSE;
2876                 }
2877
2878         *width = pr->width;
2879         *height = pr->height;
2880         return TRUE;
2881 }
2882
2883 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2884 {
2885         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2886         g_return_val_if_fail(rect != NULL, FALSE);
2887
2888         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2889             !pr->scale)
2890                 {
2891                 rect->x = 0;
2892                 rect->y = 0;
2893                 rect->width = 0;
2894                 rect->height = 0;
2895                 return FALSE;
2896                 }
2897
2898         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2899         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2900         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2901         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2902         return TRUE;
2903 }
2904
2905 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2906 {
2907         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2908         g_return_val_if_fail(rect != NULL, FALSE);
2909
2910         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2911                 {
2912                 rect->x = 0;
2913                 rect->y = 0;
2914                 rect->width = 0;
2915                 rect->height = 0;
2916                 return FALSE;
2917                 }
2918
2919         rect->x = pr->x_scroll;
2920         rect->y = pr->y_scroll;
2921         rect->width = pr->vis_width;
2922         rect->height = pr->vis_height;
2923         return TRUE;
2924 }
2925
2926 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2927 {
2928         gdouble zoom;
2929         gint w, h;
2930
2931         zoom = pixbuf_renderer_zoom_get(pr);
2932         pr->image_width = width;
2933         pr->image_height = height;
2934
2935         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2936
2937         //w = width;
2938         //h = height;
2939
2940         //pr->width = width;
2941         //pr->height = height;
2942 }
2943
2944 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */