src/pixbuf-renderer.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <math.h>
  17
  18 #include "main.h"
  19 #include "pixbuf-renderer.h"
  20 #include "renderer-tiles.h"
  21 #include "renderer-clutter.h"
  22
  23 #include "intl.h"
  24 #include "layout.h"
  25
  26 #include <gtk/gtk.h>
  27
  28 /* comment this out if not using this from within Geeqie
  29  * defining GQ_BUILD does these things:
  30  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  31  */
  32 #define GQ_BUILD 1
  33
  34 #ifdef GQ_BUILD
  35 #include "main.h"
  36 #include "pixbuf_util.h"
  37 #include "exif.h"
  38 #else
  39 typedef enum {
  40         EXIF_ORIENTATION_UNKNOWN        = 0,
  41         EXIF_ORIENTATION_TOP_LEFT       = 1,
  42         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  43         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  44         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  45         EXIF_ORIENTATION_LEFT_TOP       = 5,
  46         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  47         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  48         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  49 } ExifOrientationType;
  50 #endif
  51
  52
  53 /* default min and max zoom */
  54 #define PR_ZOOM_MIN -32.0
  55 #define PR_ZOOM_MAX 32.0
  56
  57 /* distance to drag mouse to disable image flip */
  58 #define PR_DRAG_SCROLL_THRESHHOLD 4
  59
  60 /* increase pan rate when holding down shift */
  61 #define PR_PAN_SHIFT_MULTIPLIER 6
  62
  63 /* scroller config */
  64 #define PR_SCROLLER_UPDATES_PER_SEC 30
  65 #define PR_SCROLLER_DEAD_ZONE 6
  66
  67 /* when scaling image to below this size, use nearest pixel for scaling
  68  * (below about 4, the other scale types become slow generating their conversion tables)
  69  */
  70 #define PR_MIN_SCALE_SIZE 8
  71
  72 enum {
  73         SIGNAL_ZOOM = 0,
  74         SIGNAL_CLICKED,
  75         SIGNAL_SCROLL_NOTIFY,
  76         SIGNAL_RENDER_COMPLETE,
  77         SIGNAL_DRAG,
  78         SIGNAL_UPDATE_PIXEL,
  79         SIGNAL_COUNT
  80 };
  81
  82 enum {
  83         PROP_0,
  84         PROP_ZOOM_MIN,
  85         PROP_ZOOM_MAX,
  86         PROP_ZOOM_QUALITY,
  87         PROP_ZOOM_2PASS,
  88         PROP_ZOOM_EXPAND,
  89         PROP_SCROLL_RESET,
  90         PROP_DELAY_FLIP,
  91         PROP_LOADING,
  92         PROP_COMPLETE,
  93         PROP_CACHE_SIZE_DISPLAY,
  94         PROP_CACHE_SIZE_TILES,
  95         PROP_WINDOW_FIT,
  96         PROP_WINDOW_LIMIT,
  97         PROP_WINDOW_LIMIT_VALUE,
  98         PROP_AUTOFIT_LIMIT,
  99         PROP_AUTOFIT_LIMIT_VALUE
 100 };
 101
 102 typedef enum {
 103         PR_ZOOM_NONE            = 0,
 104         PR_ZOOM_FORCE           = 1 << 0,
 105         PR_ZOOM_NEW             = 1 << 1,
 106         PR_ZOOM_CENTER          = 1 << 2,
 107         PR_ZOOM_INVALIDATE      = 1 << 3,
 108         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 109 } PrZoomFlags;
 110
 111 static guint signals[SIGNAL_COUNT] = { 0 };
 112 static GtkEventBoxClass *parent_class = NULL;
 113
 114
 115
 116 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 117 static void pixbuf_renderer_init(PixbufRenderer *pr);
 118 static void pixbuf_renderer_finalize(GObject *object);
 119 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 120                                          const GValue *value, GParamSpec *pspec);
 121 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 122                                          GValue *value, GParamSpec *pspec);
 123 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 124
 125
 126 static void pr_source_tile_free_all(PixbufRenderer *pr);
 127
 128 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 129                          PrZoomFlags flags, gint px, gint py);
 130
 131 static void pr_signals_connect(PixbufRenderer *pr);
 132 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 133 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 134
 135
 136 /*
 137  *-------------------------------------------------------------------
 138  * Pixbuf Renderer object
 139  *-------------------------------------------------------------------
 140  */
 141
 142 GType pixbuf_renderer_get_type(void)
 143 {
 144         static GType pixbuf_renderer_type = 0;
 145
 146         if (!pixbuf_renderer_type)
 147                 {
 148                 static const GTypeInfo pixbuf_renderer_info =
 149                         {
 150                         sizeof(PixbufRendererClass), /* class_size */
 151                         NULL,           /* base_init */
 152                         NULL,           /* base_finalize */
 153                         (GClassInitFunc)pixbuf_renderer_class_init,
 154                         NULL,           /* class_finalize */
 155                         NULL,           /* class_data */
 156                         sizeof(PixbufRenderer), /* instance_size */
 157                         0,              /* n_preallocs */
 158                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 159                         NULL,           /* value_table */
 160                         };
 161
 162                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 163                                                               &pixbuf_renderer_info, 0);
 164                 }
 165
 166         return pixbuf_renderer_type;
 167 }
 168
 169 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 170 {
 171         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 172
 173         parent_class = g_type_class_peek_parent(class);
 174
 175         gobject_class->set_property = pixbuf_renderer_set_property;
 176         gobject_class->get_property = pixbuf_renderer_get_property;
 177
 178         gobject_class->finalize = pixbuf_renderer_finalize;
 179
 180         g_object_class_install_property(gobject_class,
 181                                         PROP_ZOOM_MIN,
 182                                         g_param_spec_double("zoom_min",
 183                                                             "Zoom minimum",
 184                                                             NULL,
 185                                                             -1000.0,
 186                                                             1000.0,
 187                                                             PR_ZOOM_MIN,
 188                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 189
 190         g_object_class_install_property(gobject_class,
 191                                         PROP_ZOOM_MAX,
 192                                         g_param_spec_double("zoom_max",
 193                                                             "Zoom maximum",
 194                                                             NULL,
 195                                                             -1000.0,
 196                                                             1000.0,
 197                                                             PR_ZOOM_MIN,
 198                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 199
 200         g_object_class_install_property(gobject_class,
 201                                         PROP_ZOOM_QUALITY,
 202                                         g_param_spec_uint("zoom_quality",
 203                                                           "Zoom quality",
 204                                                           NULL,
 205                                                           GDK_INTERP_NEAREST,
 206                                                           GDK_INTERP_HYPER,
 207                                                           GDK_INTERP_BILINEAR,
 208                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 209
 210         g_object_class_install_property(gobject_class,
 211                                         PROP_ZOOM_2PASS,
 212                                         g_param_spec_boolean("zoom_2pass",
 213                                                              "2 pass zoom",
 214                                                              NULL,
 215                                                              TRUE,
 216                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 217
 218         g_object_class_install_property(gobject_class,
 219                                         PROP_ZOOM_EXPAND,
 220                                         g_param_spec_boolean("zoom_expand",
 221                                                              "Expand image in autozoom.",
 222                                                              NULL,
 223                                                              FALSE,
 224                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 225         g_object_class_install_property(gobject_class,
 226                                         PROP_SCROLL_RESET,
 227                                         g_param_spec_uint("scroll_reset",
 228                                                           "New image scroll reset",
 229                                                           NULL,
 230                                                           PR_SCROLL_RESET_TOPLEFT,
 231                                                           PR_SCROLL_RESET_NOCHANGE,
 232                                                           PR_SCROLL_RESET_TOPLEFT,
 233                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 234
 235         g_object_class_install_property(gobject_class,
 236                                         PROP_DELAY_FLIP,
 237                                         g_param_spec_boolean("delay_flip",
 238                                                              "Delay image update",
 239                                                              NULL,
 240                                                              FALSE,
 241                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 242
 243         g_object_class_install_property(gobject_class,
 244                                         PROP_LOADING,
 245                                         g_param_spec_boolean("loading",
 246                                                              "Image actively loading",
 247                                                              NULL,
 248                                                              FALSE,
 249                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 250
 251         g_object_class_install_property(gobject_class,
 252                                         PROP_COMPLETE,
 253                                         g_param_spec_boolean("complete",
 254                                                              "Image rendering complete",
 255                                                              NULL,
 256                                                              FALSE,
 257                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 258
 259         g_object_class_install_property(gobject_class,
 260                                         PROP_CACHE_SIZE_DISPLAY,
 261                                         g_param_spec_uint("cache_display",
 262                                                           "Display cache size MB",
 263                                                           NULL,
 264                                                           0,
 265                                                           128,
 266                                                           PR_CACHE_SIZE_DEFAULT,
 267                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 268
 269         g_object_class_install_property(gobject_class,
 270                                         PROP_CACHE_SIZE_TILES,
 271                                         g_param_spec_uint("cache_tiles",
 272                                                           "Tile cache count",
 273                                                           "Number of tiles to retain in memory at any one time.",
 274                                                           0,
 275                                                           256,
 276                                                           PR_CACHE_SIZE_DEFAULT,
 277                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279         g_object_class_install_property(gobject_class,
 280                                         PROP_WINDOW_FIT,
 281                                         g_param_spec_boolean("window_fit",
 282                                                              "Fit window to image size",
 283                                                              NULL,
 284                                                              FALSE,
 285                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 286
 287         g_object_class_install_property(gobject_class,
 288                                         PROP_WINDOW_LIMIT,
 289                                         g_param_spec_boolean("window_limit",
 290                                                              "Limit size of parent window",
 291                                                              NULL,
 292                                                              FALSE,
 293                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 294
 295         g_object_class_install_property(gobject_class,
 296                                         PROP_WINDOW_LIMIT_VALUE,
 297                                         g_param_spec_uint("window_limit_value",
 298                                                           "Size limit of parent window",
 299                                                           NULL,
 300                                                           10,
 301                                                           150,
 302                                                           100,
 303                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 304
 305         g_object_class_install_property(gobject_class,
 306                                         PROP_AUTOFIT_LIMIT,
 307                                         g_param_spec_boolean("autofit_limit",
 308                                                              "Limit size of image when autofitting",
 309                                                              NULL,
 310                                                              FALSE,
 311                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 312
 313         g_object_class_install_property(gobject_class,
 314                                         PROP_AUTOFIT_LIMIT_VALUE,
 315                                         g_param_spec_uint("autofit_limit_value",
 316                                                           "Size limit of image when autofitting",
 317                                                           NULL,
 318                                                           10,
 319                                                           150,
 320                                                           100,
 321                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 322
 323
 324         signals[SIGNAL_ZOOM] =
 325                 g_signal_new("zoom",
 326                              G_OBJECT_CLASS_TYPE(gobject_class),
 327                              G_SIGNAL_RUN_LAST,
 328                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 329                              NULL, NULL,
 330                              g_cclosure_marshal_VOID__DOUBLE,
 331                              G_TYPE_NONE, 1,
 332                              G_TYPE_DOUBLE);
 333
 334         signals[SIGNAL_CLICKED] =
 335                 g_signal_new("clicked",
 336                              G_OBJECT_CLASS_TYPE(gobject_class),
 337                              G_SIGNAL_RUN_LAST,
 338                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 339                              NULL, NULL,
 340                              g_cclosure_marshal_VOID__BOXED,
 341                              G_TYPE_NONE, 1,
 342                              GDK_TYPE_EVENT);
 343
 344         signals[SIGNAL_SCROLL_NOTIFY] =
 345                 g_signal_new("scroll-notify",
 346                              G_OBJECT_CLASS_TYPE(gobject_class),
 347                              G_SIGNAL_RUN_LAST,
 348                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 349                              NULL, NULL,
 350                              g_cclosure_marshal_VOID__VOID,
 351                              G_TYPE_NONE, 0);
 352
 353         signals[SIGNAL_RENDER_COMPLETE] =
 354                 g_signal_new("render-complete",
 355                              G_OBJECT_CLASS_TYPE(gobject_class),
 356                              G_SIGNAL_RUN_LAST,
 357                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 358                              NULL, NULL,
 359                              g_cclosure_marshal_VOID__VOID,
 360                              G_TYPE_NONE, 0);
 361
 362         signals[SIGNAL_DRAG] =
 363                 g_signal_new("drag",
 364                              G_OBJECT_CLASS_TYPE(gobject_class),
 365                              G_SIGNAL_RUN_LAST,
 366                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 367                              NULL, NULL,
 368                              g_cclosure_marshal_VOID__BOXED,
 369                              G_TYPE_NONE, 1,
 370                              GDK_TYPE_EVENT);
 371
 372         signals[SIGNAL_UPDATE_PIXEL] =
 373                 g_signal_new("update-pixel",
 374                              G_OBJECT_CLASS_TYPE(gobject_class),
 375                              G_SIGNAL_RUN_LAST,
 376                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 377                              NULL, NULL,
 378                              g_cclosure_marshal_VOID__VOID,
 379                              G_TYPE_NONE, 0);
 380 }
 381
 382 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 383 {
 384         if (options->image.use_clutter_renderer)
 385                 {
 386 #ifdef HAVE_CLUTTER
 387                 return renderer_clutter_new(pr);
 388 #else
 389                 DEBUG_0("Geeqie is built without clutter renderer support");
 390 #endif
 391                 }
 392         return renderer_tiles_new(pr);
 393 }
 394
 395
 396 static void pixbuf_renderer_init(PixbufRenderer *pr)
 397 {
 398         GtkWidget *box;
 399
 400         box = GTK_WIDGET(pr);
 401
 402         pr->zoom_min = PR_ZOOM_MIN;
 403         pr->zoom_max = PR_ZOOM_MAX;
 404         pr->zoom_quality = GDK_INTERP_BILINEAR;
 405         pr->zoom_2pass = FALSE;
 406
 407         pr->zoom = 1.0;
 408         pr->scale = 1.0;
 409         pr->aspect_ratio = 1.0;
 410
 411         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 412
 413         pr->scroller_id = 0;
 414         pr->scroller_overlay = -1;
 415
 416         pr->x_mouse = -1;
 417         pr->y_mouse = -1;
 418
 419         pr->source_tiles_enabled = FALSE;
 420         pr->source_tiles = NULL;
 421
 422         pr->orientation = 1;
 423
 424         pr->norm_center_x = 0.5;
 425         pr->norm_center_y = 0.5;
 426
 427         pr->stereo_mode = PR_STEREO_NONE;
 428
 429         pr->renderer = pr_backend_renderer_new(pr);
 430
 431         pr->renderer2 = NULL;
 432
 433         gtk_widget_set_double_buffered(box, FALSE);
 434         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
 589 /*
 590  *-------------------------------------------------------------------
 591  * misc utilities
 592  *-------------------------------------------------------------------
 593  */
 594
 595 static void widget_set_cursor(GtkWidget *widget, gint icon)
 596 {
 597         GdkCursor *cursor;
 598
 599         if (!gtk_widget_get_window(widget)) return;
 600
 601         if (icon == -1)
 602                 {
 603                 cursor = NULL;
 604                 }
 605         else
 606                 {
 607                 cursor = gdk_cursor_new(icon);
 608                 }
 609
 610         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 611
 612         if (cursor) gdk_cursor_unref(cursor);
 613 }
 614
 615 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 616                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 617                                gint *rx, gint *ry, gint *rw, gint *rh)
 618 {
 619         if (clip_x + clip_w <= x ||
 620             clip_x >= x + w ||
 621             clip_y + clip_h <= y ||
 622             clip_y >= y + h)
 623                 {
 624                 return FALSE;
 625                 }
 626
 627         *rx = MAX(x, clip_x);
 628         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 629
 630         *ry = MAX(y, clip_y);
 631         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 632
 633         return TRUE;
 634 }
 635
 636 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 637 {
 638         GdkWindowState state;
 639
 640         if (!pr->parent_window) return FALSE;
 641         if (!pr->window_fit) return FALSE;
 642         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 643
 644         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 645         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 646         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 647
 648         return TRUE;
 649 }
 650
 651 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 652 {
 653         GtkWidget *widget;
 654         GtkWidget *parent;
 655         gint ww, wh;
 656         GtkAllocation widget_allocation;
 657         GtkAllocation parent_allocation;
 658
 659         if (!pr_parent_window_sizable(pr)) return FALSE;
 660
 661         if (pr->window_limit)
 662                 {
 663                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 664                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 665
 666                 if (w > sw) w = sw;
 667                 if (h > sh) h = sh;
 668                 }
 669
 670         widget = GTK_WIDGET(pr);
 671         parent = GTK_WIDGET(pr->parent_window);
 672
 673         gtk_widget_get_allocation(widget, &widget_allocation);
 674         gtk_widget_get_allocation(parent, &parent_allocation);
 675
 676         w += (parent_allocation.width - widget_allocation.width);
 677         h += (parent_allocation.height - widget_allocation.height);
 678
 679         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 680         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 681         if (w == ww && h == wh) return FALSE;
 682
 683         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 684
 685         return TRUE;
 686 }
 687
 688 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 689 {
 690         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 691         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 692
 693         pr->parent_window = GTK_WIDGET(window);
 694 }
 695
 696 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 697 {
 698         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 699
 700         return GTK_WINDOW(pr->parent_window);
 701 }
 702
 703
 704 /*
 705  *-------------------------------------------------------------------
 706  * overlays
 707  *-------------------------------------------------------------------
 708  */
 709
 710
 711 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 712                                  OverlayRendererFlags flags)
 713 {
 714         /* let's assume both renderers returns the same value */
 715         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 716         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 717 }
 718
 719 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 720 {
 721         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 722         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 723 }
 724
 725 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 726 {
 727         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 728         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 729 }
 730
 731 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 732 {
 733         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 734         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 735 }
 736
 737 /*
 738  *-------------------------------------------------------------------
 739  * scroller overlay
 740  *-------------------------------------------------------------------
 741  */
 742
 743
 744 static gboolean pr_scroller_update_cb(gpointer data)
 745 {
 746         PixbufRenderer *pr = data;
 747         gint x, y;
 748         gint xinc, yinc;
 749
 750         /* this was a simple scroll by difference between scroller and mouse position,
 751          * but all this math results in a smoother result and accounts for a dead zone.
 752          */
 753
 754         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 755                 {
 756                 x = 0;
 757                 }
 758         else
 759                 {
 760                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 761                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 762                 x += (x > 0) ? -shift : shift;
 763                 }
 764
 765         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 766                 {
 767                 y = 0;
 768                 }
 769         else
 770                 {
 771                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 772                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 773                 y += (y > 0) ? -shift : shift;
 774                 }
 775
 776         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 777                 {
 778                 xinc = x;
 779                 }
 780         else
 781                 {
 782                 xinc = pr->scroller_xinc;
 783
 784                 if (x >= 0)
 785                         {
 786                         if (xinc < 0) xinc = 0;
 787                         if (x < xinc) xinc = x;
 788                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 789                         }
 790                 else
 791                         {
 792                         if (xinc > 0) xinc = 0;
 793                         if (x > xinc) xinc = x;
 794                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 795                         }
 796                 }
 797
 798         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 799                 {
 800                 yinc = y;
 801                 }
 802         else
 803                 {
 804                 yinc = pr->scroller_yinc;
 805
 806                 if (y >= 0)
 807                         {
 808                         if (yinc < 0) yinc = 0;
 809                         if (y < yinc) yinc = y;
 810                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 811                         }
 812                 else
 813                         {
 814                         if (yinc > 0) yinc = 0;
 815                         if (y > yinc) yinc = y;
 816                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 817                         }
 818                 }
 819
 820         pr->scroller_xinc = xinc;
 821         pr->scroller_yinc = yinc;
 822
 823         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 824         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 825
 826         pixbuf_renderer_scroll(pr, xinc, yinc);
 827
 828         return TRUE;
 829 }
 830
 831 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 832 {
 833         if (pr->scroller_id)
 834                 {
 835                 g_source_remove(pr->scroller_id);
 836                 pr->scroller_id = 0;
 837                 }
 838
 839         if (start)
 840                 {
 841                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 842                                                 pr_scroller_update_cb, pr);
 843                 }
 844 }
 845
 846 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 847 {
 848         if (pr->scroller_overlay == -1)
 849                 {
 850                 GdkPixbuf *pixbuf;
 851                 gint w, h;
 852
 853 #ifdef GQ_BUILD
 854                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 855 #else
 856                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 857                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 858 #endif
 859                 w = gdk_pixbuf_get_width(pixbuf);
 860                 h = gdk_pixbuf_get_height(pixbuf);
 861
 862                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 863                 g_object_unref(pixbuf);
 864                 }
 865
 866         pr->scroller_x = x;
 867         pr->scroller_y = y;
 868         pr->scroller_xpos = x;
 869         pr->scroller_ypos = y;
 870
 871         pr_scroller_timer_set(pr, TRUE);
 872 }
 873
 874 static void pr_scroller_stop(PixbufRenderer *pr)
 875 {
 876         if (!pr->scroller_id) return;
 877
 878         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 879         pr->scroller_overlay = -1;
 880
 881         pr_scroller_timer_set(pr, FALSE);
 882 }
 883
 884 /*
 885  *-------------------------------------------------------------------
 886  * borders
 887  *-------------------------------------------------------------------
 888  */
 889
 890 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 891 {
 892         GtkStyle *style;
 893         GtkWidget *widget;
 894
 895         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 896
 897         widget = GTK_WIDGET(pr);
 898
 899         if (color) {
 900                 GdkColor *slot;
 901
 902                 style = gtk_style_copy(gtk_widget_get_style(widget));
 903                 slot = &style->bg[GTK_STATE_NORMAL];
 904
 905                 slot->red = color->red;
 906                 slot->green = color->green;
 907                 slot->blue = color->blue;
 908                 }
 909         else {
 910                 style = gtk_style_copy(gtk_widget_get_default_style());
 911         }
 912
 913         gtk_widget_set_style(widget, style);
 914
 915         pr->renderer->update_sizes(pr->renderer);
 916         if (pr->renderer2) pr->renderer2->update_sizes(pr->renderer2);
 917 }
 918
 919 /*
 920  *-------------------------------------------------------------------
 921  * source tiles
 922  *-------------------------------------------------------------------
 923  */
 924
 925 static void pr_source_tile_free(SourceTile *st)
 926 {
 927         if (!st) return;
 928
 929         if (st->pixbuf) g_object_unref(st->pixbuf);
 930         g_free(st);
 931 }
 932
 933 static void pr_source_tile_free_all(PixbufRenderer *pr)
 934 {
 935         GList *work;
 936
 937         work = pr->source_tiles;
 938         while (work)
 939                 {
 940                 SourceTile *st;
 941
 942                 st = work->data;
 943                 work = work->next;
 944
 945                 pr_source_tile_free(st);
 946                 }
 947
 948         g_list_free(pr->source_tiles);
 949         pr->source_tiles = NULL;
 950 }
 951
 952 static void pr_source_tile_unset(PixbufRenderer *pr)
 953 {
 954         pr_source_tile_free_all(pr);
 955         pr->source_tiles_enabled = FALSE;
 956 }
 957
 958 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 959 {
 960         gint x1, y1, x2, y2;
 961
 962         if (!st) return FALSE;
 963
 964 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 965 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 966 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 967 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 968         x1 = pr->x_scroll;
 969         y1 = pr->y_scroll;
 970         x2 = pr->x_scroll + pr->vis_width;
 971         y2 = pr->y_scroll + pr->vis_height;
 972
 973         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
 974                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
 975                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
 976                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
 977 }
 978
 979 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
 980 {
 981         SourceTile *st = NULL;
 982         gint count;
 983
 984         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
 985
 986         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
 987
 988         count = g_list_length(pr->source_tiles);
 989         if (count >= pr->source_tiles_cache_size)
 990                 {
 991                 GList *work;
 992
 993                 work = g_list_last(pr->source_tiles);
 994                 while (work && count >= pr->source_tiles_cache_size)
 995                         {
 996                         SourceTile *needle;
 997
 998                         needle = work->data;
 999                         work = work->prev;
1000
1001                         if (!pr_source_tile_visible(pr, needle))
1002                                 {
1003                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1004
1005                                 if (pr->func_tile_dispose)
1006                                         {
1007                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1008                                                               pr->source_tile_width, pr->source_tile_height,
1009                                                               needle->pixbuf, pr->func_tile_data);
1010                                         }
1011
1012                                 if (!st)
1013                                         {
1014                                         st = needle;
1015                                         }
1016                                 else
1017                                         {
1018                                         pr_source_tile_free(needle);
1019                                         }
1020
1021                                 count--;
1022                                 }
1023                         }
1024                 }
1025
1026         if (!st)
1027                 {
1028                 st = g_new0(SourceTile, 1);
1029                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1030                                             pr->source_tile_width, pr->source_tile_height);
1031                 }
1032
1033         st->x = ROUND_DOWN(x, pr->source_tile_width);
1034         st->y = ROUND_DOWN(y, pr->source_tile_height);
1035         st->blank = TRUE;
1036
1037         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1038
1039         return st;
1040 }
1041
1042 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1043 {
1044         SourceTile *st;
1045
1046         st = pr_source_tile_new(pr, x, y);
1047         if (!st) return NULL;
1048
1049         if (pr->func_tile_request &&
1050             pr->func_tile_request(pr, st->x, st->y,
1051                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1052                 {
1053                 st->blank = FALSE;
1054                 }
1055
1056         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1057                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1058         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1059                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1060         return st;
1061 }
1062
1063 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1064 {
1065         GList *work;
1066
1067         work = pr->source_tiles;
1068         while (work)
1069                 {
1070                 SourceTile *st = work->data;
1071
1072                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1073                     y >= st->y && y < st->y + pr->source_tile_height)
1074                         {
1075                         if (work != pr->source_tiles)
1076                                 {
1077                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1078                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1079                                 }
1080                         return st;
1081                         }
1082
1083                 work = work->next;
1084                 }
1085
1086         return NULL;
1087 }
1088
1089 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1090 {
1091         gint x1, y1;
1092         GList *list = NULL;
1093         gint sx, sy;
1094
1095         if (x < 0) x = 0;
1096         if (y < 0) y = 0;
1097         if (w > pr->image_width) w = pr->image_width;
1098         if (h > pr->image_height) h = pr->image_height;
1099
1100         sx = ROUND_DOWN(x, pr->source_tile_width);
1101         sy = ROUND_DOWN(y, pr->source_tile_height);
1102
1103         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1104                 {
1105                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1106                         {
1107                         SourceTile *st;
1108
1109                         st = pr_source_tile_find(pr, x1, y1);
1110                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1111
1112                         if (st) list = g_list_prepend(list, st);
1113                         }
1114                 }
1115
1116         return g_list_reverse(list);
1117 }
1118
1119 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1120 {
1121         GList *work;
1122
1123         if (width < 1 || height < 1) return;
1124
1125         work = pr->source_tiles;
1126         while (work)
1127                 {
1128                 SourceTile *st;
1129                 gint rx, ry, rw, rh;
1130
1131                 st = work->data;
1132                 work = work->next;
1133
1134                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1135                                    x, y, width, height,
1136                                    &rx, &ry, &rw, &rh))
1137                         {
1138                         GdkPixbuf *pixbuf;
1139
1140                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1141                         if (pr->func_tile_request &&
1142                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1143                                 {
1144                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1145                                                               rw * pr->scale, rh * pr->scale);
1146                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1147                                                                 rw * pr->scale, rh * pr->scale);
1148                                 }
1149                         g_object_unref(pixbuf);
1150                         }
1151                 }
1152 }
1153
1154 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1155                                gint tile_width, gint tile_height, gint cache_size,
1156                                PixbufRendererTileRequestFunc func_request,
1157                                PixbufRendererTileDisposeFunc func_dispose,
1158                                gpointer user_data,
1159                                gdouble zoom)
1160 {
1161         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1162         g_return_if_fail(tile_width >= 32 && tile_width >= 32);
1163         g_return_if_fail(width >= 32 && height > 32);
1164         g_return_if_fail(func_request != NULL);
1165
1166         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1167         pr->pixbuf = NULL;
1168
1169         pr_source_tile_unset(pr);
1170
1171         if (cache_size < 4) cache_size = 4;
1172
1173         pr->source_tiles_enabled = TRUE;
1174         pr->source_tiles_cache_size = cache_size;
1175         pr->source_tile_width = tile_width;
1176         pr->source_tile_height = tile_height;
1177
1178         pr->image_width = width;
1179         pr->image_height = height;
1180
1181         pr->func_tile_request = func_request;
1182         pr->func_tile_dispose = func_dispose;
1183         pr->func_tile_data = user_data;
1184
1185         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1186 }
1187
1188 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1189 {
1190         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1191         g_return_if_fail(width >= 32 && height > 32);
1192
1193         if (!pr->source_tiles_enabled) return;
1194         if (pr->image_width == width && pr->image_height == height) return;
1195
1196         pr->image_width = width;
1197         pr->image_height = height;
1198
1199         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1200 }
1201
1202 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1203 {
1204         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1205
1206         return pr->source_tiles_enabled;
1207 }
1208
1209 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1210                                 PrZoomFlags flags, gint x, gint y)
1211 {
1212         gdouble zoom = pr->zoom;
1213
1214         if (increment == 0.0) return;
1215
1216         if (zoom == 0.0)
1217                 {
1218                 if (pr->scale < 1.0)
1219                         {
1220                         zoom = 0.0 - 1.0 / pr->scale;
1221                         }
1222                 else
1223                         {
1224                         zoom = pr->scale;
1225                         }
1226                 }
1227
1228         if (increment < 0.0)
1229                 {
1230                 if (zoom >= 1.0 && zoom + increment < 1.0)
1231                         {
1232                         zoom = zoom + increment - 2.0;
1233                         }
1234                 else
1235                         {
1236                         zoom = zoom + increment;
1237                         }
1238                 }
1239         else
1240                 {
1241                 if (zoom <= -1.0 && zoom + increment > -1.0)
1242                         {
1243                         zoom = zoom + increment + 2.0;
1244                         }
1245                 else
1246                         {
1247                         zoom = zoom + increment;
1248                         }
1249                 }
1250
1251         pr_zoom_sync(pr, zoom, flags, x, y);
1252 }
1253
1254
1255 /*
1256  *-------------------------------------------------------------------
1257  * signal emission
1258  *-------------------------------------------------------------------
1259  */
1260
1261 static void pr_update_signal(PixbufRenderer *pr)
1262 {
1263 #if 0
1264         log_printf("FIXME: send updated signal\n");
1265 #endif
1266         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1267         pr->debug_updated = TRUE;
1268 }
1269
1270 static void pr_zoom_signal(PixbufRenderer *pr)
1271 {
1272         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1273 }
1274
1275 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1276 {
1277         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1278 }
1279
1280 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1281 {
1282         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1283 }
1284
1285 void pr_render_complete_signal(PixbufRenderer *pr)
1286 {
1287         if (!pr->complete)
1288                 {
1289                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1290                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1291                 }
1292         if (pr->debug_updated)
1293                 {
1294                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1295                 pr->debug_updated = FALSE;
1296                 }
1297 }
1298
1299 static void pr_drag_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1300 {
1301         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, bevent);
1302 }
1303
1304 static void pr_update_pixel_signal(PixbufRenderer *pr)
1305 {
1306         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1307 }
1308
1309 /*
1310  *-------------------------------------------------------------------
1311  * sync and clamp
1312  *-------------------------------------------------------------------
1313  */
1314
1315
1316 void pr_tile_coords_map_orientation(gint orientation,
1317                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1318                                      gdouble image_w, gdouble image_h,
1319                                      gdouble tile_w, gdouble tile_h,
1320                                      gdouble *res_x, gdouble *res_y)
1321 {
1322         *res_x = tile_x;
1323         *res_y = tile_y;
1324         switch (orientation)
1325                 {
1326                 case EXIF_ORIENTATION_TOP_LEFT:
1327                         /* normal -- nothing to do */
1328                         break;
1329                 case EXIF_ORIENTATION_TOP_RIGHT:
1330                         /* mirrored */
1331                         *res_x = image_w - tile_x - tile_w;
1332                         break;
1333                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1334                         /* upside down */
1335                         *res_x = image_w - tile_x - tile_w;
1336                         *res_y = image_h - tile_y - tile_h;
1337                         break;
1338                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1339                         /* flipped */
1340                         *res_y = image_h - tile_y - tile_h;
1341                         break;
1342                 case EXIF_ORIENTATION_LEFT_TOP:
1343                         *res_x = tile_y;
1344                         *res_y = tile_x;
1345                         break;
1346                 case EXIF_ORIENTATION_RIGHT_TOP:
1347                         /* rotated -90 (270) */
1348                         *res_x = tile_y;
1349                         *res_y = image_w - tile_x - tile_w;
1350                         break;
1351                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1352                         *res_x = image_h - tile_y - tile_h;
1353                         *res_y = image_w - tile_x - tile_w;
1354                         break;
1355                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1356                         /* rotated 90 */
1357                         *res_x = image_h - tile_y - tile_h;
1358                         *res_y = tile_x;
1359                         break;
1360                 default:
1361                         /* The other values are out of range */
1362                         break;
1363                 }
1364 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1365 }
1366
1367 void pr_tile_region_map_orientation(gint orientation,
1368                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1369                                      gint tile_w, gint tile_h,
1370                                      gint area_w, gint area_h,
1371                                      gint *res_x, gint *res_y,
1372                                      gint *res_w, gint *res_h)
1373 {
1374         *res_x = area_x;
1375         *res_y = area_y;
1376         *res_w = area_w;
1377         *res_h = area_h;
1378
1379         switch (orientation)
1380                 {
1381                 case EXIF_ORIENTATION_TOP_LEFT:
1382                         /* normal -- nothing to do */
1383                         break;
1384                 case EXIF_ORIENTATION_TOP_RIGHT:
1385                         /* mirrored */
1386                         *res_x = tile_w - area_x - area_w;
1387                         break;
1388                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1389                         /* upside down */
1390                         *res_x = tile_w - area_x - area_w;
1391                         *res_y = tile_h - area_y - area_h;
1392                         break;
1393                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1394                         /* flipped */
1395                         *res_y = tile_h - area_y - area_h;
1396                         break;
1397                 case EXIF_ORIENTATION_LEFT_TOP:
1398                         *res_x = area_y;
1399                         *res_y = area_x;
1400                         *res_w = area_h;
1401                         *res_h = area_w;
1402                         break;
1403                 case EXIF_ORIENTATION_RIGHT_TOP:
1404                         /* rotated -90 (270) */
1405                         *res_x = area_y;
1406                         *res_y = tile_w - area_x - area_w;
1407                         *res_w = area_h;
1408                         *res_h = area_w;
1409                         break;
1410                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1411                         *res_x = tile_h - area_y - area_h;
1412                         *res_y = tile_w - area_x - area_w;
1413                         *res_w = area_h;
1414                         *res_h = area_w;
1415                         break;
1416                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1417                         /* rotated 90 */
1418                         *res_x = tile_h - area_y - area_h;
1419                         *res_y = area_x;
1420                         *res_w = area_h;
1421                         *res_h = area_w;
1422                         break;
1423                 default:
1424                         /* The other values are out of range */
1425                         break;
1426                 }
1427 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1428 }
1429
1430 void pr_coords_map_orientation_reverse(gint orientation,
1431                                      gint area_x, gint area_y,
1432                                      gint tile_w, gint tile_h,
1433                                      gint area_w, gint area_h,
1434                                      gint *res_x, gint *res_y,
1435                                      gint *res_w, gint *res_h)
1436 {
1437         *res_x = area_x;
1438         *res_y = area_y;
1439         *res_w = area_w;
1440         *res_h = area_h;
1441
1442         switch (orientation)
1443                 {
1444                 case EXIF_ORIENTATION_TOP_LEFT:
1445                         /* normal -- nothing to do */
1446                         break;
1447                 case EXIF_ORIENTATION_TOP_RIGHT:
1448                         /* mirrored */
1449                         *res_x = tile_w - area_x - area_w;
1450                         break;
1451                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1452                         /* upside down */
1453                         *res_x = tile_w - area_x - area_w;
1454                         *res_y = tile_h - area_y - area_h;
1455                         break;
1456                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1457                         /* flipped */
1458                         *res_y = tile_h - area_y - area_h;
1459                         break;
1460                 case EXIF_ORIENTATION_LEFT_TOP:
1461                         *res_x = area_y;
1462                         *res_y = area_x;
1463                         *res_w = area_h;
1464                         *res_h = area_w;
1465                         break;
1466                 case EXIF_ORIENTATION_RIGHT_TOP:
1467                         /* rotated -90 (270) */
1468                         *res_x = tile_w - area_y - area_h;
1469                         *res_y = area_x;
1470                         *res_w = area_h;
1471                         *res_h = area_w;
1472                         break;
1473                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1474                         *res_x = tile_w - area_y - area_h;
1475                         *res_y = tile_h - area_x - area_w;
1476                         *res_w = area_h;
1477                         *res_h = area_w;
1478                         break;
1479                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1480                         /* rotated 90 */
1481                         *res_x = area_y;
1482                         *res_y = tile_h - area_x - area_w;
1483                         *res_w = area_h;
1484                         *res_h = area_w;
1485                         break;
1486                 default:
1487                         /* The other values are out of range */
1488                         break;
1489                 }
1490 }
1491
1492
1493
1494 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1495 {
1496         gint src_x, src_y;
1497         if (!pr->width || !pr->height) return;
1498
1499         /*
1500          * Update norm_center only if the image is bigger than the window.
1501          * With this condition the stored center survives also a temporary display
1502          * of the "broken image" icon.
1503         */
1504
1505         if (pr->width > pr->viewport_width)
1506                 {
1507                 src_x = pr->x_scroll + pr->vis_width / 2;
1508                 pr->norm_center_x = (gdouble)src_x / pr->width;
1509                 }
1510
1511         if (pr->height > pr->viewport_height)
1512                 {
1513                 src_y = pr->y_scroll + pr->vis_height / 2;
1514                 pr->norm_center_y = (gdouble)src_y / pr->height;
1515                 }
1516 }
1517
1518
1519 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1520 {
1521         gint old_xs;
1522         gint old_ys;
1523
1524         if (pr->zoom == 0.0)
1525                 {
1526                 pr->x_scroll = 0;
1527                 pr->y_scroll = 0;
1528
1529                 return FALSE;
1530                 }
1531
1532         old_xs = pr->x_scroll;
1533         old_ys = pr->y_scroll;
1534
1535         if (pr->x_offset > 0)
1536                 {
1537                 pr->x_scroll = 0;
1538                 }
1539         else
1540                 {
1541                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1542                 }
1543
1544         if (pr->y_offset > 0)
1545                 {
1546                 pr->y_scroll = 0;
1547                 }
1548         else
1549                 {
1550                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1551                 }
1552
1553         pixbuf_renderer_sync_scroll_center(pr);
1554
1555         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1556 }
1557
1558 static gboolean pr_size_clamp(PixbufRenderer *pr)
1559 {
1560         gint old_vw, old_vh;
1561
1562         old_vw = pr->vis_width;
1563         old_vh = pr->vis_height;
1564
1565         if (pr->width < pr->viewport_width)
1566                 {
1567                 pr->vis_width = pr->width;
1568                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1569                 }
1570         else
1571                 {
1572                 pr->vis_width = pr->viewport_width;
1573                 pr->x_offset = 0;
1574                 }
1575
1576         if (pr->height < pr->viewport_height)
1577                 {
1578                 pr->vis_height = pr->height;
1579                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1580                 }
1581         else
1582                 {
1583                 pr->vis_height = pr->viewport_height;
1584                 pr->y_offset = 0;
1585                 }
1586
1587         pixbuf_renderer_sync_scroll_center(pr);
1588
1589         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1590 }
1591
1592 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1593                               PrZoomFlags flags)
1594 {
1595         gint w, h;
1596         gdouble scale;
1597         gboolean force = !!(flags & PR_ZOOM_FORCE);
1598         gboolean new = !!(flags & PR_ZOOM_NEW);
1599
1600         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1601
1602         if (pr->zoom == zoom && !force) return FALSE;
1603
1604         w = pr->image_width;
1605         h = pr->image_height;
1606
1607         if (zoom == 0.0 && !pr->pixbuf)
1608                 {
1609                 scale = 1.0;
1610                 }
1611         else if (zoom == 0.0)
1612                 {
1613                 gint max_w;
1614                 gint max_h;
1615                 gboolean sizeable;
1616
1617                 sizeable = (new && pr_parent_window_sizable(pr));
1618
1619                 if (sizeable)
1620                         {
1621                         max_w = gdk_screen_width();
1622                         max_h = gdk_screen_height();
1623
1624                         if (pr->window_limit)
1625                                 {
1626                                 max_w = max_w * pr->window_limit_size / 100;
1627                                 max_h = max_h * pr->window_limit_size / 100;
1628                                 }
1629                         }
1630                 else
1631                         {
1632                         max_w = pr->viewport_width;
1633                         max_h = pr->viewport_height;
1634                         }
1635
1636                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1637                         {
1638                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1639                                 {
1640                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1641                                 h = max_h;
1642                                 w = w * scale + 0.5;
1643                                 if (w > max_w) w = max_w;
1644                                 }
1645                         else
1646                                 {
1647                                 scale = (gdouble)max_w / w;
1648                                 w = max_w;
1649                                 h = h * scale * pr->aspect_ratio + 0.5;
1650                                 if (h > max_h) h = max_h;
1651                                 }
1652
1653                         if (pr->autofit_limit)
1654                                 {
1655                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1656                                 w = w * factor + 0.5;
1657                                 h = h * factor + 0.5;
1658                                 scale = scale * factor;
1659                                 }
1660
1661                         if (w < 1) w = 1;
1662                         if (h < 1) h = 1;
1663                         }
1664                 else
1665                         {
1666                         scale = 1.0;
1667                         }
1668                 }
1669         else if (zoom > 0.0) /* zoom orig, in */
1670                 {
1671                 scale = zoom;
1672                 w = w * scale;
1673                 h = h * scale * pr->aspect_ratio;
1674                 }
1675         else /* zoom out */
1676                 {
1677                 scale = 1.0 / (0.0 - zoom);
1678                 w = w * scale;
1679                 h = h * scale * pr->aspect_ratio;
1680                 }
1681
1682         pr->zoom = zoom;
1683         pr->width = w;
1684         pr->height = h;
1685         pr->scale = scale;
1686
1687         return TRUE;
1688 }
1689
1690 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1691                          PrZoomFlags flags, gint px, gint py)
1692 {
1693         gdouble old_scale;
1694         gint old_cx, old_cy;
1695         gboolean clamped;
1696         gboolean sized;
1697         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1698         gboolean force = !!(flags & PR_ZOOM_FORCE);
1699         gboolean new = !!(flags & PR_ZOOM_NEW);
1700         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1701         PrZoomFlags clamp_flags = flags;
1702         gdouble old_center_x = pr->norm_center_x;
1703         gdouble old_center_y = pr->norm_center_y;
1704
1705         old_scale = pr->scale;
1706         if (center_point)
1707                 {
1708                 px = CLAMP(px, 0, pr->width);
1709                 py = CLAMP(py, 0, pr->height);
1710                 old_cx = pr->x_scroll + (px - pr->x_offset);
1711                 old_cy = pr->y_scroll + (py - pr->y_offset);
1712                 }
1713         else
1714                 {
1715                 px = py = 0;
1716                 old_cx = pr->x_scroll + pr->vis_width / 2;
1717                 old_cy = pr->y_scroll + pr->vis_height / 2;
1718                 }
1719
1720         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1721         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1722
1723         clamped = pr_size_clamp(pr);
1724         sized = pr_parent_window_resize(pr, pr->width, pr->height);
1725
1726         if (force && new)
1727                 {
1728                 switch (pr->scroll_reset)
1729                         {
1730                         case PR_SCROLL_RESET_NOCHANGE:
1731                                 /* maintain old scroll position */
1732                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1733                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1734                                 break;
1735                         case PR_SCROLL_RESET_CENTER:
1736                                 /* center new image */
1737                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1738                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1739                                 break;
1740                         case PR_SCROLL_RESET_TOPLEFT:
1741                         default:
1742                                 /* reset to upper left */
1743                                 pr->x_scroll = 0;
1744                                 pr->y_scroll = 0;
1745                                 break;
1746                         }
1747                 }
1748         else
1749                 {
1750                 /* user zoom does not force, so keep visible center point */
1751                 if (center_point)
1752                         {
1753                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1754                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1755                         }
1756                 else
1757                         {
1758                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1759                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1760                         }
1761                 }
1762
1763         pr_scroll_clamp(pr);
1764
1765         pr->renderer->update_zoom(pr->renderer, lazy);
1766         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1767
1768         pr_scroll_notify_signal(pr);
1769         pr_zoom_signal(pr);
1770         pr_update_signal(pr);
1771 }
1772
1773 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1774 {
1775         gboolean zoom_changed = FALSE;
1776
1777         gint new_viewport_width = new_width;
1778         gint new_viewport_height = new_height;
1779
1780         if (!pr->stereo_temp_disable)
1781                 {
1782                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1783                         {
1784                         new_viewport_width = new_width / 2;
1785                         }
1786                 else if (pr->stereo_mode & PR_STEREO_VERT)
1787                         {
1788                         new_viewport_height = new_height / 2;
1789                         }
1790                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1791                         {
1792                         new_viewport_width = pr->stereo_fixed_width;
1793                         new_viewport_height = pr->stereo_fixed_height;
1794                         }
1795                 }
1796
1797         if (pr->window_width == new_width && pr->window_height == new_height &&
1798             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1799
1800         pr->window_width = new_width;
1801         pr->window_height = new_height;
1802         pr->viewport_width = new_viewport_width;
1803         pr->viewport_height = new_viewport_height;
1804
1805         if (pr->zoom == 0.0)
1806                 {
1807                 gdouble old_scale = pr->scale;
1808                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1809                 zoom_changed = (old_scale != pr->scale);
1810                 }
1811
1812         pr_size_clamp(pr);
1813         pr_scroll_clamp(pr);
1814
1815         if (zoom_changed)
1816                 {
1817                 pr->renderer->update_zoom(pr->renderer, FALSE);
1818                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1819                 }
1820
1821         pr->renderer->update_sizes(pr->renderer);
1822         if (pr->renderer2) pr->renderer2->update_sizes(pr->renderer2);
1823
1824
1825         /* ensure scroller remains visible */
1826         if (pr->scroller_overlay != -1)
1827                 {
1828                 gboolean update = FALSE;
1829
1830                 if (pr->scroller_x > new_width)
1831                         {
1832                         pr->scroller_x = new_width;
1833                         pr->scroller_xpos = new_width;
1834                         update = TRUE;
1835                         }
1836                 if (pr->scroller_y > new_height)
1837                         {
1838                         pr->scroller_y = new_height;
1839                         pr->scroller_ypos = new_height;
1840                         update = TRUE;
1841                         }
1842
1843                 if (update)
1844                         {
1845                         GdkPixbuf *pixbuf;
1846
1847                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1848                                 {
1849                                 gint w, h;
1850
1851                                 w = gdk_pixbuf_get_width(pixbuf);
1852                                 h = gdk_pixbuf_get_height(pixbuf);
1853                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1854                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1855                                 }
1856                         }
1857                 }
1858
1859         pr_scroll_notify_signal(pr);
1860         if (zoom_changed) pr_zoom_signal(pr);
1861         pr_update_signal(pr);
1862 }
1863
1864 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1865 {
1866         PixbufRenderer *pr = data;
1867
1868         pr_size_sync(pr, allocation->width, allocation->height);
1869 }
1870
1871 /*
1872  *-------------------------------------------------------------------
1873  * scrolling
1874  *-------------------------------------------------------------------
1875  */
1876
1877 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1878 {
1879         gint old_x, old_y;
1880         gint x_off, y_off;
1881
1882         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1883
1884         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1885
1886         old_x = pr->x_scroll;
1887         old_y = pr->y_scroll;
1888
1889         pr->x_scroll += x;
1890         pr->y_scroll += y;
1891
1892         pr_scroll_clamp(pr);
1893
1894         pixbuf_renderer_sync_scroll_center(pr);
1895
1896         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1897
1898         pr_scroll_notify_signal(pr);
1899
1900         x_off = pr->x_scroll - old_x;
1901         y_off = pr->y_scroll - old_y;
1902
1903         pr->renderer->scroll(pr->renderer, x_off, y_off);
1904         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1905 }
1906
1907 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1908                                      gdouble x_align, gdouble y_align)
1909 {
1910         gint px, py;
1911         gint ax, ay;
1912
1913         x_align = CLAMP(x_align, 0.0, 1.0);
1914         y_align = CLAMP(y_align, 0.0, 1.0);
1915
1916         ax = (gdouble)pr->vis_width * x_align;
1917         ay = (gdouble)pr->vis_height * y_align;
1918
1919         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1920         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1921
1922         pixbuf_renderer_scroll(pr, px, py);
1923 }
1924
1925 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1926
1927 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1928 {
1929         *x = pr->norm_center_x;
1930         *y = pr->norm_center_y;
1931 }
1932
1933 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1934 {
1935         gdouble dst_x, dst_y;
1936
1937         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1938         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1939
1940         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1941         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1942
1943         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1944 }
1945
1946 /*
1947  *-------------------------------------------------------------------
1948  * mouse
1949  *-------------------------------------------------------------------
1950  */
1951
1952 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
1953 {
1954         PixbufRenderer *pr;
1955         gint accel;
1956
1957         /* This is a hack, but work far the best, at least for single pointer systems.
1958          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
1959         gint x, y;
1960         gdk_window_get_pointer (bevent->window, &x, &y, NULL);
1961         bevent->x = x;
1962         bevent->y = y;
1963
1964         pr = PIXBUF_RENDERER(widget);
1965
1966         if (pr->scroller_id)
1967                 {
1968                 pr->scroller_xpos = bevent->x;
1969                 pr->scroller_ypos = bevent->y;
1970                 }
1971
1972         pr->x_mouse = bevent->x;
1973         pr->y_mouse = bevent->y;
1974         pr_update_pixel_signal(pr);
1975
1976         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
1977
1978         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
1979                 {
1980                 pr->drag_moved++;
1981                 }
1982         else
1983                 {
1984                 widget_set_cursor(widget, GDK_FLEUR);
1985                 }
1986
1987         if (bevent->state & GDK_CONTROL_MASK)
1988                 {
1989                 accel = PR_PAN_SHIFT_MULTIPLIER;
1990                 }
1991         else
1992                 {
1993                 accel = 1;
1994                 }
1995
1996         /* do the scroll */
1997         pixbuf_renderer_scroll(pr, (pr->drag_last_x - bevent->x) * accel,
1998                                (pr->drag_last_y - bevent->y) * accel);
1999
2000         pr_drag_signal(pr, bevent);
2001
2002         pr->drag_last_x = bevent->x;
2003         pr->drag_last_y = bevent->y;
2004
2005         /* This is recommended by the GTK+ documentation, but does not work properly.
2006          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2007          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2008          */
2009         /* gdk_event_request_motions (bevent); */
2010         return FALSE;
2011 }
2012
2013 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2014 {
2015         PixbufRenderer *pr;
2016
2017         pr = PIXBUF_RENDERER(widget);
2018         pr->x_mouse = -1;
2019         pr->y_mouse = -1;
2020
2021         pr_update_pixel_signal(pr);
2022         return FALSE;
2023 }
2024
2025 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2026 {
2027         PixbufRenderer *pr;
2028         GtkWidget *parent;
2029
2030         pr = PIXBUF_RENDERER(widget);
2031
2032         if (pr->scroller_id) return TRUE;
2033
2034         switch (bevent->button)
2035                 {
2036                 case MOUSE_BUTTON_LEFT:
2037                         pr->in_drag = TRUE;
2038                         pr->drag_last_x = bevent->x;
2039                         pr->drag_last_y = bevent->y;
2040                         pr->drag_moved = 0;
2041                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2042                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2043                                          NULL, NULL, bevent->time);
2044                         gtk_grab_add(widget);
2045                         break;
2046                 case MOUSE_BUTTON_MIDDLE:
2047                         pr->drag_moved = 0;
2048                         break;
2049                 case MOUSE_BUTTON_RIGHT:
2050                         pr_clicked_signal(pr, bevent);
2051                         break;
2052                 default:
2053                         break;
2054                 }
2055
2056         parent = gtk_widget_get_parent(widget);
2057 #if GTK_CHECK_VERSION(2,20,0)
2058         if (widget && gtk_widget_get_can_focus(parent))
2059 #else
2060         if (widget && GTK_WIDGET_CAN_FOCUS(parent))
2061 #endif
2062                 {
2063                 gtk_widget_grab_focus(parent);
2064                 }
2065
2066         return FALSE;
2067 }
2068
2069 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2070 {
2071         PixbufRenderer *pr;
2072
2073         pr = PIXBUF_RENDERER(widget);
2074
2075         if (pr->scroller_id)
2076                 {
2077                 pr_scroller_stop(pr);
2078                 return TRUE;
2079                 }
2080
2081 #if GTK_CHECK_VERSION(2,20,0)
2082         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2083 #else
2084         if (gdk_pointer_is_grabbed() && GTK_WIDGET_HAS_GRAB(pr))
2085 #endif
2086                 {
2087                 gtk_grab_remove(widget);
2088                 gdk_pointer_ungrab(bevent->time);
2089                 widget_set_cursor(widget, -1);
2090                 }
2091
2092         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2093                 {
2094                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2095                         {
2096                         pr_scroller_start(pr, bevent->x, bevent->y);
2097                         }
2098                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2099                         {
2100                         pr_clicked_signal(pr, bevent);
2101                         }
2102                 }
2103
2104         pr->in_drag = FALSE;
2105
2106         return FALSE;
2107 }
2108
2109 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2110 {
2111         PixbufRenderer *pr;
2112
2113         pr = PIXBUF_RENDERER(widget);
2114
2115         if (pr->scroller_id)
2116                 {
2117                 pr->scroller_xpos = pr->scroller_x;
2118                 pr->scroller_ypos = pr->scroller_y;
2119                 pr->scroller_xinc = 0;
2120                 pr->scroller_yinc = 0;
2121                 }
2122
2123         return FALSE;
2124 }
2125
2126 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2127 {
2128         PixbufRenderer *pr;
2129
2130         pr = PIXBUF_RENDERER(widget);
2131
2132         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2133 }
2134
2135 static void pr_signals_connect(PixbufRenderer *pr)
2136 {
2137         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2138                          G_CALLBACK(pr_mouse_motion_cb), pr);
2139         g_signal_connect(G_OBJECT(pr), "button_press_event",
2140                          G_CALLBACK(pr_mouse_press_cb), pr);
2141         g_signal_connect(G_OBJECT(pr), "button_release_event",
2142                          G_CALLBACK(pr_mouse_release_cb), pr);
2143         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2144                          G_CALLBACK(pr_mouse_leave_cb), pr);
2145         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2146                          G_CALLBACK(pr_leave_notify_cb), pr);
2147
2148         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2149                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
2150                                               GDK_LEAVE_NOTIFY_MASK);
2151
2152         g_signal_connect(G_OBJECT(pr), "drag_begin",
2153                          G_CALLBACK(pr_mouse_drag_cb), pr);
2154
2155 }
2156
2157 /*
2158  *-------------------------------------------------------------------
2159  * stereo support
2160  *-------------------------------------------------------------------
2161  */
2162
2163 #define COLOR_BYTES 3   /* rgb */
2164 static void pr_create_anaglyph_RC(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2165 {
2166         gint srs, drs;
2167         guchar *s_pix, *d_pix;
2168         guchar *sp, *dp;
2169         guchar *spi, *dpi;
2170         gint i, j;
2171
2172         srs = gdk_pixbuf_get_rowstride(right);
2173         s_pix = gdk_pixbuf_get_pixels(right);
2174         spi = s_pix + (x * COLOR_BYTES);
2175
2176         drs = gdk_pixbuf_get_rowstride(pixbuf);
2177         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2178         dpi =  d_pix + x * COLOR_BYTES;
2179
2180         for (i = y; i < y + h; i++)
2181                 {
2182                 sp = spi + (i * srs);
2183                 dp = dpi + (i * drs);
2184                 for (j = 0; j < w; j++)
2185                         {
2186                         *dp = *sp; /* copy red channel */
2187                         sp += COLOR_BYTES;
2188                         dp += COLOR_BYTES;
2189                         }
2190                 }
2191 }
2192
2193 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2194 {
2195         gint srs, drs;
2196         guchar *s_pix, *d_pix;
2197         guchar *sp, *dp;
2198         guchar *spi, *dpi;
2199         gint i, j;
2200         const double gc[3] = {0.299, 0.587, 0.114};
2201
2202         srs = gdk_pixbuf_get_rowstride(right);
2203         s_pix = gdk_pixbuf_get_pixels(right);
2204         spi = s_pix + (x * COLOR_BYTES);
2205
2206         drs = gdk_pixbuf_get_rowstride(pixbuf);
2207         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2208         dpi =  d_pix + x * COLOR_BYTES;
2209
2210         for (i = y; i < y + h; i++)
2211                 {
2212                 sp = spi + (i * srs);
2213                 dp = dpi + (i * drs);
2214                 for (j = 0; j < w; j++)
2215                         {
2216                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2217                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2218                         dp[0] = g2; /* red channel from sp */
2219                         dp[1] = g1; /* green and blue from dp */
2220                         dp[2] = g1;
2221                         sp += COLOR_BYTES;
2222                         dp += COLOR_BYTES;
2223                         }
2224                 }
2225 }
2226
2227 const double pr_dubois_matrix[3][6] = {
2228         { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2229         {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2230         {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}
2231         };
2232
2233 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2234 {
2235         gint srs, drs;
2236         guchar *s_pix, *d_pix;
2237         guchar *sp, *dp;
2238         guchar *spi, *dpi;
2239         gint i, j, k;
2240
2241         srs = gdk_pixbuf_get_rowstride(right);
2242         s_pix = gdk_pixbuf_get_pixels(right);
2243         spi = s_pix + (x * COLOR_BYTES);
2244
2245         drs = gdk_pixbuf_get_rowstride(pixbuf);
2246         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2247         dpi =  d_pix + x * COLOR_BYTES;
2248
2249         for (i = y; i < y + h; i++)
2250                 {
2251                 sp = spi + (i * srs);
2252                 dp = dpi + (i * drs);
2253                 for (j = 0; j < w; j++)
2254                         {
2255                         double res[3];
2256                         for (k = 0; k < 3; k++)
2257                                 {
2258                                 const double *m = pr_dubois_matrix[k];
2259                                 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];
2260                                 if (res[k] < 0.0) res[k] = 0;
2261                                 if (res[k] > 255.0) res[k] = 255.0;
2262                                 }
2263                         dp[0] = res[0];
2264                         dp[1] = res[1];
2265                         dp[2] = res[2];
2266                         sp += COLOR_BYTES;
2267                         dp += COLOR_BYTES;
2268                         }
2269                 }
2270 }
2271
2272 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2273 {
2274         if (mode & PR_STEREO_ANAGLYPH_RC)
2275                 pr_create_anaglyph_RC(pixbuf, right, x, y, w, h);
2276         else if (mode & PR_STEREO_ANAGLYPH_GRAY)
2277                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h);
2278         else if (mode & PR_STEREO_ANAGLYPH_DB)
2279                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h);
2280 }
2281
2282 /*
2283  *-------------------------------------------------------------------
2284  * public
2285  *-------------------------------------------------------------------
2286  */
2287 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2288 {
2289         pr->stereo_pixbuf_offset_left = 0;
2290         pr->stereo_pixbuf_offset_right = 0;
2291         if (!pr->pixbuf) return;
2292         switch (pr->orientation)
2293                 {
2294                 case EXIF_ORIENTATION_LEFT_TOP:
2295                 case EXIF_ORIENTATION_RIGHT_TOP:
2296                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2297                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2298                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2299                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2300                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2301                                 {
2302                                 pr->image_height /= 2;
2303                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2304                                 }
2305                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2306                                 {
2307                                 pr->image_height /= 2;
2308                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2309                                 }
2310
2311                         break;
2312                 default:
2313                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2314                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2315                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2316                                 {
2317                                 pr->image_width /= 2;
2318                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2319                                 }
2320                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2321                                 {
2322                                 pr->image_width /= 2;
2323                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2324                                 }
2325                 }
2326 }
2327
2328 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2329 {
2330         if (pixbuf) g_object_ref(pixbuf);
2331         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2332         pr->pixbuf = pixbuf;
2333
2334         if (!pr->pixbuf)
2335                 {
2336                 GtkWidget *box;
2337
2338                 /* no pixbuf so just clear the window */
2339                 pr->image_width = 0;
2340                 pr->image_height = 0;
2341                 pr->scale = 1.0;
2342                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2343                                     and used for pixbuf_renderer_zoom_get */
2344
2345                 box = GTK_WIDGET(pr);
2346
2347 #if GTK_CHECK_VERSION(2,20,0)
2348                 if (gtk_widget_get_realized(box))
2349 #else
2350                 if (GTK_WIDGET_REALIZED(box))
2351 #endif
2352                         {
2353 #if !GTK_CHECK_VERSION(3,0,0)
2354                         gdk_window_clear(gtk_widget_get_window(box));
2355 #endif
2356                         pr->renderer->overlay_draw(pr->renderer, 0, 0, pr->viewport_width, pr->viewport_height);
2357                         if (pr->renderer2) pr->renderer2->overlay_draw(pr->renderer2, 0, 0, pr->viewport_width, pr->viewport_height);
2358                         }
2359
2360                 pr_update_signal(pr);
2361
2362                 return;
2363                 }
2364
2365         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2366                 {
2367                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2368                 pr_stereo_temp_disable(pr, disable);
2369                 }
2370
2371         pr_pixbuf_size_sync(pr);
2372         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2373         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2374         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2375 }
2376
2377 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2378 {
2379         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2380
2381         pr_source_tile_unset(pr);
2382
2383         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2384
2385         pr_update_signal(pr);
2386 }
2387
2388 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2389 {
2390         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2391
2392         pr_source_tile_unset(pr);
2393
2394         pr->orientation = orientation;
2395         pr->stereo_data = stereo_data;
2396         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2397
2398         pr_update_signal(pr);
2399 }
2400
2401 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2402 {
2403         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2404
2405         return pr->pixbuf;
2406 }
2407
2408 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2409 {
2410         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2411
2412         pr->orientation = orientation;
2413
2414         pr_pixbuf_size_sync(pr);
2415         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2416
2417         pr->renderer->update_sizes(pr->renderer);
2418         if (pr->renderer2) pr->renderer2->update_sizes(pr->renderer2);
2419 }
2420
2421 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2422 {
2423         if (!pr) return 1;
2424         return pr->orientation;
2425 }
2426
2427 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2428 {
2429         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2430         if (pr->stereo_data == stereo_data) return;
2431
2432
2433         pr->stereo_data = stereo_data;
2434
2435         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2436                 {
2437                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2438                 pr_stereo_temp_disable(pr, disable);
2439                 }
2440         pr_pixbuf_size_sync(pr);
2441         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2442         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2443         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2444 }
2445
2446 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2447 {
2448         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2449
2450         pr->func_post_process = func;
2451         pr->post_process_user_data = user_data;
2452         pr->post_process_slow = func && slow;
2453
2454 }
2455
2456
2457 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2458 {
2459         GObject *object;
2460         PixbufRendererScrollResetType scroll_reset;
2461
2462         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2463         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2464
2465         if (pr == source) return;
2466
2467         object = G_OBJECT(pr);
2468
2469         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2470         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2471         g_object_set(object, "loading", source->loading, NULL);
2472
2473         pr->complete = source->complete;
2474
2475         pr->x_scroll = source->x_scroll;
2476         pr->y_scroll = source->y_scroll;
2477         pr->x_mouse  = source->x_mouse;
2478         pr->y_mouse  = source->y_mouse;
2479
2480         scroll_reset = pr->scroll_reset;
2481         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2482
2483         pr->func_post_process = source->func_post_process;
2484         pr->post_process_user_data = source->post_process_user_data;
2485         pr->post_process_slow = source->post_process_slow;
2486         pr->orientation = source->orientation;
2487         pr->stereo_data = source->stereo_data;
2488
2489         if (source->source_tiles_enabled)
2490                 {
2491                 pr_source_tile_unset(pr);
2492
2493                 pr->source_tiles_enabled = source->source_tiles_enabled;
2494                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2495                 pr->source_tile_width = source->source_tile_width;
2496                 pr->source_tile_height = source->source_tile_height;
2497                 pr->image_width = source->image_width;
2498                 pr->image_height = source->image_height;
2499
2500                 pr->func_tile_request = source->func_tile_request;
2501                 pr->func_tile_dispose = source->func_tile_dispose;
2502                 pr->func_tile_data = source->func_tile_data;
2503
2504                 pr->source_tiles = source->source_tiles;
2505                 source->source_tiles = NULL;
2506
2507                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2508                 }
2509         else
2510                 {
2511                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2512                 }
2513
2514         pr->scroll_reset = scroll_reset;
2515
2516         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2517 //      pr_queue_clear(source);
2518 //      pr_tile_free_all(source);
2519 }
2520
2521 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2522 {
2523         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2524
2525         if (pr->source_tiles_enabled)
2526                 {
2527                 pr_source_tile_changed(pr, x, y, w, h);
2528                 }
2529
2530         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2531         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2532 }
2533
2534 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2535 {
2536         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2537
2538         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2539 }
2540
2541 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2542 {
2543         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2544
2545         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2546 }
2547
2548 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2549 {
2550         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2551
2552         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2553 }
2554
2555 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2556 {
2557         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2558
2559         return pr->zoom;
2560 }
2561
2562 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2563 {
2564         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2565
2566         return pr->scale;
2567 }
2568
2569 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2570 {
2571         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2572
2573         if (min > 1.0 || max < 1.0) return;
2574         if (min < 1.0 && min > -1.0) return;
2575         if (min < -200.0 || max > 200.0) return;
2576
2577         if (pr->zoom_min != min)
2578                 {
2579                 pr->zoom_min = min;
2580                 g_object_notify(G_OBJECT(pr), "zoom_min");
2581                 }
2582         if (pr->zoom_max != max)
2583                 {
2584                 pr->zoom_max = max;
2585                 g_object_notify(G_OBJECT(pr), "zoom_max");
2586                 }
2587 }
2588
2589 static void pr_stereo_set(PixbufRenderer *pr)
2590 {
2591         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2592
2593         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2594
2595         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2596                 {
2597                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2598                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2599                 }
2600         else
2601                 {
2602                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2603                 pr->renderer2 = NULL;
2604                 }
2605         if (pr->stereo_mode & PR_STEREO_HALF)
2606                 {
2607                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2608                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2609                 else pr->aspect_ratio = 1.0;
2610                 }
2611         else
2612                 {
2613                 pr->aspect_ratio = 1.0;
2614                 }
2615 }
2616
2617 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2618 {
2619         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2620         pr->stereo_mode = stereo_mode;
2621         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2622
2623         pr->stereo_temp_disable = FALSE;
2624
2625         pr_stereo_set(pr);
2626
2627         if (redraw)
2628                 {
2629                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2630                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2631                 }
2632 }
2633
2634 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2635 {
2636         pr->stereo_fixed_width = width;
2637         pr->stereo_fixed_height = height;
2638         pr->stereo_fixed_x_left = x1;
2639         pr->stereo_fixed_y_left = y1;
2640         pr->stereo_fixed_x_right = x2;
2641         pr->stereo_fixed_y_right = y2;
2642 }
2643
2644 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2645 {
2646         return pr->stereo_mode;
2647 }
2648
2649 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2650 {
2651         if (pr->stereo_temp_disable == disable) return;
2652         pr->stereo_temp_disable = disable;
2653         if (disable)
2654                 {
2655                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2656                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2657                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2658                 pr->renderer2 = NULL;
2659                 pr->aspect_ratio = 1.0;
2660                 }
2661         else
2662                 {
2663                 pr_stereo_set(pr);
2664                 }
2665         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2666 }
2667
2668 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2669                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2670 {
2671         GdkPixbuf *pb = pr->pixbuf;
2672         gint p_alpha, prs;
2673         guchar *p_pix, *pp;
2674         gint map_x, map_y, map_w, map_h;
2675
2676         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2677         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2678
2679         if (!pr->pixbuf && !pr->source_tiles_enabled)
2680                 {
2681                 *r_mouse = -1;
2682                 *g_mouse = -1;
2683                 *b_mouse = -1;
2684                 return FALSE;
2685                 }
2686
2687         if (!pb) return FALSE;
2688
2689         pr_tile_region_map_orientation(pr->orientation,
2690                                         x_pixel, y_pixel,
2691                                         pr->image_width, pr->image_height,
2692                                         1, 1, /*single pixel */
2693                                         &map_x, &map_y,
2694                                         &map_w, &map_h);
2695
2696         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2697         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2698
2699         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2700         prs = gdk_pixbuf_get_rowstride(pb);
2701         p_pix = gdk_pixbuf_get_pixels(pb);
2702
2703         pp = p_pix + map_y * prs + (map_x * (p_alpha ? 4 : 3));
2704         *r_mouse = *pp;
2705         pp++;
2706         *g_mouse = *pp;
2707         pp++;
2708         *b_mouse = *pp;
2709
2710         return TRUE;
2711 }
2712
2713 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2714 {
2715         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2716
2717         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2718         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2719
2720         if (!pr->pixbuf && !pr->source_tiles_enabled)
2721                 {
2722                 *x_pixel_return = -1;
2723                 *y_pixel_return = -1;
2724                 return FALSE;
2725                 }
2726
2727         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2728         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2729         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2730         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2731
2732         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2733                 {
2734                 /* mouse is not on pr */
2735                 x_pixel = y_pixel = -1;
2736                 }
2737
2738         *x_pixel_return = x_pixel;
2739         *y_pixel_return = y_pixel;
2740
2741         return TRUE;
2742 }
2743
2744 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2745 {
2746         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2747         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2748
2749         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2750                 {
2751                 *width = 0;
2752                 *height = 0;
2753                 return FALSE;
2754                 }
2755
2756         *width = pr->image_width;
2757         *height = pr->image_height;
2758         return TRUE;
2759 }
2760
2761 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2762 {
2763         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2764         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2765
2766         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2767                 {
2768                 *width = 0;
2769                 *height = 0;
2770                 return FALSE;
2771                 }
2772
2773         *width = pr->width;
2774         *height = pr->height;
2775         return TRUE;
2776 }
2777
2778 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2779 {
2780         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2781         g_return_val_if_fail(rect != NULL, FALSE);
2782
2783         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2784             !pr->scale)
2785                 {
2786                 rect->x = 0;
2787                 rect->y = 0;
2788                 rect->width = 0;
2789                 rect->height = 0;
2790                 return FALSE;
2791                 }
2792
2793         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2794         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2795         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2796         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2797         return TRUE;
2798 }
2799
2800 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2801 {
2802         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2803         g_return_val_if_fail(rect != NULL, FALSE);
2804
2805         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2806                 {
2807                 rect->x = 0;
2808                 rect->y = 0;
2809                 rect->width = 0;
2810                 rect->height = 0;
2811                 return FALSE;
2812                 }
2813
2814         rect->x = pr->x_scroll;
2815         rect->y = pr->y_scroll;
2816         rect->width = pr->vis_width;
2817         rect->height = pr->vis_height;
2818         return TRUE;
2819 }
2820
2821 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2822 {
2823 #if 0
2824         /* FIXME: this function does not consider the image orientation,
2825         so it probably only breaks something */
2826         gdouble zoom;
2827         gint w, h;
2828
2829         zoom = pixbuf_renderer_zoom_get(pr);
2830         pr->image_width = width;
2831         pr->image_height = height;
2832
2833         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2834
2835         //w = width;
2836         //h = height;
2837
2838         //pr->width = width;
2839         //pr->height = height;
2840 #endif
2841 }
2842
2843 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */