src/pixbuf-renderer.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <math.h>
  17
  18 #include "main.h"
  19 #include "pixbuf-renderer.h"
  20 #include "renderer-tiles.h"
  21 #include "renderer-clutter.h"
  22
  23 #include "intl.h"
  24 #include "layout.h"
  25
  26 #include <gtk/gtk.h>
  27
  28 /* comment this out if not using this from within Geeqie
  29  * defining GQ_BUILD does these things:
  30  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
  31  */
  32 #define GQ_BUILD 1
  33
  34 #ifdef GQ_BUILD
  35 #include "main.h"
  36 #include "pixbuf_util.h"
  37 #include "exif.h"
  38 #else
  39 typedef enum {
  40         EXIF_ORIENTATION_UNKNOWN        = 0,
  41         EXIF_ORIENTATION_TOP_LEFT       = 1,
  42         EXIF_ORIENTATION_TOP_RIGHT      = 2,
  43         EXIF_ORIENTATION_BOTTOM_RIGHT   = 3,
  44         EXIF_ORIENTATION_BOTTOM_LEFT    = 4,
  45         EXIF_ORIENTATION_LEFT_TOP       = 5,
  46         EXIF_ORIENTATION_RIGHT_TOP      = 6,
  47         EXIF_ORIENTATION_RIGHT_BOTTOM   = 7,
  48         EXIF_ORIENTATION_LEFT_BOTTOM    = 8
  49 } ExifOrientationType;
  50 #endif
  51
  52
  53 /* default min and max zoom */
  54 #define PR_ZOOM_MIN -32.0
  55 #define PR_ZOOM_MAX 32.0
  56
  57 /* distance to drag mouse to disable image flip */
  58 #define PR_DRAG_SCROLL_THRESHHOLD 4
  59
  60 /* increase pan rate when holding down shift */
  61 #define PR_PAN_SHIFT_MULTIPLIER 6
  62
  63 /* scroller config */
  64 #define PR_SCROLLER_UPDATES_PER_SEC 30
  65 #define PR_SCROLLER_DEAD_ZONE 6
  66
  67 /* when scaling image to below this size, use nearest pixel for scaling
  68  * (below about 4, the other scale types become slow generating their conversion tables)
  69  */
  70 #define PR_MIN_SCALE_SIZE 8
  71
  72 enum {
  73         SIGNAL_ZOOM = 0,
  74         SIGNAL_CLICKED,
  75         SIGNAL_SCROLL_NOTIFY,
  76         SIGNAL_RENDER_COMPLETE,
  77         SIGNAL_DRAG,
  78         SIGNAL_UPDATE_PIXEL,
  79         SIGNAL_COUNT
  80 };
  81
  82 enum {
  83         PROP_0,
  84         PROP_ZOOM_MIN,
  85         PROP_ZOOM_MAX,
  86         PROP_ZOOM_QUALITY,
  87         PROP_ZOOM_2PASS,
  88         PROP_ZOOM_EXPAND,
  89         PROP_SCROLL_RESET,
  90         PROP_DELAY_FLIP,
  91         PROP_LOADING,
  92         PROP_COMPLETE,
  93         PROP_CACHE_SIZE_DISPLAY,
  94         PROP_CACHE_SIZE_TILES,
  95         PROP_WINDOW_FIT,
  96         PROP_WINDOW_LIMIT,
  97         PROP_WINDOW_LIMIT_VALUE,
  98         PROP_AUTOFIT_LIMIT,
  99         PROP_AUTOFIT_LIMIT_VALUE
 100 };
 101
 102 typedef enum {
 103         PR_ZOOM_NONE            = 0,
 104         PR_ZOOM_FORCE           = 1 << 0,
 105         PR_ZOOM_NEW             = 1 << 1,
 106         PR_ZOOM_CENTER          = 1 << 2,
 107         PR_ZOOM_INVALIDATE      = 1 << 3,
 108         PR_ZOOM_LAZY            = 1 << 4  /* wait with redraw for pixbuf_renderer_area_changed */
 109 } PrZoomFlags;
 110
 111 static guint signals[SIGNAL_COUNT] = { 0 };
 112 static GtkEventBoxClass *parent_class = NULL;
 113
 114
 115
 116 static void pixbuf_renderer_class_init(PixbufRendererClass *class);
 117 static void pixbuf_renderer_init(PixbufRenderer *pr);
 118 static void pixbuf_renderer_finalize(GObject *object);
 119 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 120                                          const GValue *value, GParamSpec *pspec);
 121 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 122                                          GValue *value, GParamSpec *pspec);
 123 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 124
 125
 126 static void pr_source_tile_free_all(PixbufRenderer *pr);
 127
 128 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 129                          PrZoomFlags flags, gint px, gint py);
 130
 131 static void pr_signals_connect(PixbufRenderer *pr);
 132 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
 133 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 134
 135
 136 /*
 137  *-------------------------------------------------------------------
 138  * Pixbuf Renderer object
 139  *-------------------------------------------------------------------
 140  */
 141
 142 GType pixbuf_renderer_get_type(void)
 143 {
 144         static GType pixbuf_renderer_type = 0;
 145
 146         if (!pixbuf_renderer_type)
 147                 {
 148                 static const GTypeInfo pixbuf_renderer_info =
 149                         {
 150                         sizeof(PixbufRendererClass), /* class_size */
 151                         NULL,           /* base_init */
 152                         NULL,           /* base_finalize */
 153                         (GClassInitFunc)pixbuf_renderer_class_init,
 154                         NULL,           /* class_finalize */
 155                         NULL,           /* class_data */
 156                         sizeof(PixbufRenderer), /* instance_size */
 157                         0,              /* n_preallocs */
 158                         (GInstanceInitFunc)pixbuf_renderer_init, /* instance_init */
 159                         NULL,           /* value_table */
 160                         };
 161
 162                 pixbuf_renderer_type = g_type_register_static(GTK_TYPE_EVENT_BOX, "PixbufRenderer",
 163                                                               &pixbuf_renderer_info, 0);
 164                 }
 165
 166         return pixbuf_renderer_type;
 167 }
 168
 169 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 170 {
 171         GObjectClass *gobject_class = G_OBJECT_CLASS(class);
 172
 173         parent_class = g_type_class_peek_parent(class);
 174
 175         gobject_class->set_property = pixbuf_renderer_set_property;
 176         gobject_class->get_property = pixbuf_renderer_get_property;
 177
 178         gobject_class->finalize = pixbuf_renderer_finalize;
 179
 180         g_object_class_install_property(gobject_class,
 181                                         PROP_ZOOM_MIN,
 182                                         g_param_spec_double("zoom_min",
 183                                                             "Zoom minimum",
 184                                                             NULL,
 185                                                             -1000.0,
 186                                                             1000.0,
 187                                                             PR_ZOOM_MIN,
 188                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 189
 190         g_object_class_install_property(gobject_class,
 191                                         PROP_ZOOM_MAX,
 192                                         g_param_spec_double("zoom_max",
 193                                                             "Zoom maximum",
 194                                                             NULL,
 195                                                             -1000.0,
 196                                                             1000.0,
 197                                                             PR_ZOOM_MIN,
 198                                                             G_PARAM_READABLE | G_PARAM_WRITABLE));
 199
 200         g_object_class_install_property(gobject_class,
 201                                         PROP_ZOOM_QUALITY,
 202                                         g_param_spec_uint("zoom_quality",
 203                                                           "Zoom quality",
 204                                                           NULL,
 205                                                           GDK_INTERP_NEAREST,
 206                                                           GDK_INTERP_HYPER,
 207                                                           GDK_INTERP_BILINEAR,
 208                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 209
 210         g_object_class_install_property(gobject_class,
 211                                         PROP_ZOOM_2PASS,
 212                                         g_param_spec_boolean("zoom_2pass",
 213                                                              "2 pass zoom",
 214                                                              NULL,
 215                                                              TRUE,
 216                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 217
 218         g_object_class_install_property(gobject_class,
 219                                         PROP_ZOOM_EXPAND,
 220                                         g_param_spec_boolean("zoom_expand",
 221                                                              "Expand image in autozoom.",
 222                                                              NULL,
 223                                                              FALSE,
 224                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 225         g_object_class_install_property(gobject_class,
 226                                         PROP_SCROLL_RESET,
 227                                         g_param_spec_uint("scroll_reset",
 228                                                           "New image scroll reset",
 229                                                           NULL,
 230                                                           PR_SCROLL_RESET_TOPLEFT,
 231                                                           PR_SCROLL_RESET_NOCHANGE,
 232                                                           PR_SCROLL_RESET_TOPLEFT,
 233                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 234
 235         g_object_class_install_property(gobject_class,
 236                                         PROP_DELAY_FLIP,
 237                                         g_param_spec_boolean("delay_flip",
 238                                                              "Delay image update",
 239                                                              NULL,
 240                                                              FALSE,
 241                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 242
 243         g_object_class_install_property(gobject_class,
 244                                         PROP_LOADING,
 245                                         g_param_spec_boolean("loading",
 246                                                              "Image actively loading",
 247                                                              NULL,
 248                                                              FALSE,
 249                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 250
 251         g_object_class_install_property(gobject_class,
 252                                         PROP_COMPLETE,
 253                                         g_param_spec_boolean("complete",
 254                                                              "Image rendering complete",
 255                                                              NULL,
 256                                                              FALSE,
 257                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 258
 259         g_object_class_install_property(gobject_class,
 260                                         PROP_CACHE_SIZE_DISPLAY,
 261                                         g_param_spec_uint("cache_display",
 262                                                           "Display cache size MB",
 263                                                           NULL,
 264                                                           0,
 265                                                           128,
 266                                                           PR_CACHE_SIZE_DEFAULT,
 267                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 268
 269         g_object_class_install_property(gobject_class,
 270                                         PROP_CACHE_SIZE_TILES,
 271                                         g_param_spec_uint("cache_tiles",
 272                                                           "Tile cache count",
 273                                                           "Number of tiles to retain in memory at any one time.",
 274                                                           0,
 275                                                           256,
 276                                                           PR_CACHE_SIZE_DEFAULT,
 277                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279         g_object_class_install_property(gobject_class,
 280                                         PROP_WINDOW_FIT,
 281                                         g_param_spec_boolean("window_fit",
 282                                                              "Fit window to image size",
 283                                                              NULL,
 284                                                              FALSE,
 285                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 286
 287         g_object_class_install_property(gobject_class,
 288                                         PROP_WINDOW_LIMIT,
 289                                         g_param_spec_boolean("window_limit",
 290                                                              "Limit size of parent window",
 291                                                              NULL,
 292                                                              FALSE,
 293                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 294
 295         g_object_class_install_property(gobject_class,
 296                                         PROP_WINDOW_LIMIT_VALUE,
 297                                         g_param_spec_uint("window_limit_value",
 298                                                           "Size limit of parent window",
 299                                                           NULL,
 300                                                           10,
 301                                                           150,
 302                                                           100,
 303                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 304
 305         g_object_class_install_property(gobject_class,
 306                                         PROP_AUTOFIT_LIMIT,
 307                                         g_param_spec_boolean("autofit_limit",
 308                                                              "Limit size of image when autofitting",
 309                                                              NULL,
 310                                                              FALSE,
 311                                                              G_PARAM_READABLE | G_PARAM_WRITABLE));
 312
 313         g_object_class_install_property(gobject_class,
 314                                         PROP_AUTOFIT_LIMIT_VALUE,
 315                                         g_param_spec_uint("autofit_limit_value",
 316                                                           "Size limit of image when autofitting",
 317                                                           NULL,
 318                                                           10,
 319                                                           150,
 320                                                           100,
 321                                                           G_PARAM_READABLE | G_PARAM_WRITABLE));
 322
 323
 324         signals[SIGNAL_ZOOM] =
 325                 g_signal_new("zoom",
 326                              G_OBJECT_CLASS_TYPE(gobject_class),
 327                              G_SIGNAL_RUN_LAST,
 328                              G_STRUCT_OFFSET(PixbufRendererClass, zoom),
 329                              NULL, NULL,
 330                              g_cclosure_marshal_VOID__DOUBLE,
 331                              G_TYPE_NONE, 1,
 332                              G_TYPE_DOUBLE);
 333
 334         signals[SIGNAL_CLICKED] =
 335                 g_signal_new("clicked",
 336                              G_OBJECT_CLASS_TYPE(gobject_class),
 337                              G_SIGNAL_RUN_LAST,
 338                              G_STRUCT_OFFSET(PixbufRendererClass, clicked),
 339                              NULL, NULL,
 340                              g_cclosure_marshal_VOID__BOXED,
 341                              G_TYPE_NONE, 1,
 342                              GDK_TYPE_EVENT);
 343
 344         signals[SIGNAL_SCROLL_NOTIFY] =
 345                 g_signal_new("scroll-notify",
 346                              G_OBJECT_CLASS_TYPE(gobject_class),
 347                              G_SIGNAL_RUN_LAST,
 348                              G_STRUCT_OFFSET(PixbufRendererClass, scroll_notify),
 349                              NULL, NULL,
 350                              g_cclosure_marshal_VOID__VOID,
 351                              G_TYPE_NONE, 0);
 352
 353         signals[SIGNAL_RENDER_COMPLETE] =
 354                 g_signal_new("render-complete",
 355                              G_OBJECT_CLASS_TYPE(gobject_class),
 356                              G_SIGNAL_RUN_LAST,
 357                              G_STRUCT_OFFSET(PixbufRendererClass, render_complete),
 358                              NULL, NULL,
 359                              g_cclosure_marshal_VOID__VOID,
 360                              G_TYPE_NONE, 0);
 361
 362         signals[SIGNAL_DRAG] =
 363                 g_signal_new("drag",
 364                              G_OBJECT_CLASS_TYPE(gobject_class),
 365                              G_SIGNAL_RUN_LAST,
 366                              G_STRUCT_OFFSET(PixbufRendererClass, drag),
 367                              NULL, NULL,
 368                              g_cclosure_marshal_VOID__BOXED,
 369                              G_TYPE_NONE, 1,
 370                              GDK_TYPE_EVENT);
 371
 372         signals[SIGNAL_UPDATE_PIXEL] =
 373                 g_signal_new("update-pixel",
 374                              G_OBJECT_CLASS_TYPE(gobject_class),
 375                              G_SIGNAL_RUN_LAST,
 376                              G_STRUCT_OFFSET(PixbufRendererClass, update_pixel),
 377                              NULL, NULL,
 378                              g_cclosure_marshal_VOID__VOID,
 379                              G_TYPE_NONE, 0);
 380 }
 381
 382 static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
 383 {
 384         if (options->image.use_clutter_renderer)
 385                 {
 386 #ifdef HAVE_CLUTTER
 387                 return renderer_clutter_new(pr);
 388 #else
 389                 DEBUG_0("Geeqie is built without clutter renderer support");
 390 #endif
 391                 }
 392         return renderer_tiles_new(pr);
 393 }
 394
 395
 396 static void pixbuf_renderer_init(PixbufRenderer *pr)
 397 {
 398         GtkWidget *box;
 399
 400         box = GTK_WIDGET(pr);
 401
 402         pr->zoom_min = PR_ZOOM_MIN;
 403         pr->zoom_max = PR_ZOOM_MAX;
 404         pr->zoom_quality = GDK_INTERP_BILINEAR;
 405         pr->zoom_2pass = FALSE;
 406
 407         pr->zoom = 1.0;
 408         pr->scale = 1.0;
 409         pr->aspect_ratio = 1.0;
 410
 411         pr->scroll_reset = PR_SCROLL_RESET_TOPLEFT;
 412
 413         pr->scroller_id = 0;
 414         pr->scroller_overlay = -1;
 415
 416         pr->x_mouse = -1;
 417         pr->y_mouse = -1;
 418
 419         pr->source_tiles_enabled = FALSE;
 420         pr->source_tiles = NULL;
 421
 422         pr->orientation = 1;
 423
 424         pr->norm_center_x = 0.5;
 425         pr->norm_center_y = 0.5;
 426
 427         pr->stereo_mode = PR_STEREO_NONE;
 428
 429         pr->renderer = pr_backend_renderer_new(pr);
 430
 431         pr->renderer2 = NULL;
 432
 433         gtk_widget_set_double_buffered(box, FALSE);
 434         gtk_widget_set_app_paintable(box, TRUE);
 435         g_signal_connect_after(G_OBJECT(box), "size_allocate",
 436                                G_CALLBACK(pr_size_cb), pr);
 437
 438         pr_signals_connect(pr);
 439 }
 440
 441 static void pixbuf_renderer_finalize(GObject *object)
 442 {
 443         PixbufRenderer *pr;
 444
 445         pr = PIXBUF_RENDERER(object);
 446
 447         pr->renderer->free(pr->renderer);
 448         if (pr->renderer2) pr->renderer2->free(pr->renderer2);
 449
 450
 451         if (pr->pixbuf) g_object_unref(pr->pixbuf);
 452
 453         pr_scroller_timer_set(pr, FALSE);
 454
 455         pr_source_tile_free_all(pr);
 456 }
 457
 458 PixbufRenderer *pixbuf_renderer_new(void)
 459 {
 460         return g_object_new(TYPE_PIXBUF_RENDERER, NULL);
 461 }
 462
 463 static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
 464                                          const GValue *value, GParamSpec *pspec)
 465 {
 466         PixbufRenderer *pr;
 467
 468         pr = PIXBUF_RENDERER(object);
 469
 470         switch (prop_id)
 471                 {
 472                 case PROP_ZOOM_MIN:
 473                         pr->zoom_min = g_value_get_double(value);
 474                         break;
 475                 case PROP_ZOOM_MAX:
 476                         pr->zoom_max = g_value_get_double(value);
 477                         break;
 478                 case PROP_ZOOM_QUALITY:
 479                         pr->zoom_quality = g_value_get_uint(value);
 480                         break;
 481                 case PROP_ZOOM_2PASS:
 482                         pr->zoom_2pass = g_value_get_boolean(value);
 483                         break;
 484                 case PROP_ZOOM_EXPAND:
 485                         pr->zoom_expand = g_value_get_boolean(value);
 486                         break;
 487                 case PROP_SCROLL_RESET:
 488                         pr->scroll_reset = g_value_get_uint(value);
 489                         break;
 490                 case PROP_DELAY_FLIP:
 491                         pr->delay_flip = g_value_get_boolean(value);
 492                         break;
 493                 case PROP_LOADING:
 494                         pr->loading = g_value_get_boolean(value);
 495                         break;
 496                 case PROP_COMPLETE:
 497                         pr->complete = g_value_get_boolean(value);
 498                         break;
 499                 case PROP_CACHE_SIZE_DISPLAY:
 500 //                      pr->tile_cache_max = g_value_get_uint(value);
 501                         break;
 502                 case PROP_CACHE_SIZE_TILES:
 503                         pr->source_tiles_cache_size = g_value_get_uint(value);
 504                         break;
 505                 case PROP_WINDOW_FIT:
 506                         pr->window_fit = g_value_get_boolean(value);
 507                         break;
 508                 case PROP_WINDOW_LIMIT:
 509                         pr->window_limit = g_value_get_boolean(value);
 510                         break;
 511                 case PROP_WINDOW_LIMIT_VALUE:
 512                         pr->window_limit_size = g_value_get_uint(value);
 513                         break;
 514                 case PROP_AUTOFIT_LIMIT:
 515                         pr->autofit_limit = g_value_get_boolean(value);
 516                         break;
 517                 case PROP_AUTOFIT_LIMIT_VALUE:
 518                         pr->autofit_limit_size = g_value_get_uint(value);
 519                         break;
 520                 default:
 521                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 522                         break;
 523                 }
 524 }
 525
 526 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
 527                                          GValue *value, GParamSpec *pspec)
 528 {
 529         PixbufRenderer *pr;
 530
 531         pr = PIXBUF_RENDERER(object);
 532
 533         switch (prop_id)
 534                 {
 535                 case PROP_ZOOM_MIN:
 536                         g_value_set_double(value, pr->zoom_min);
 537                         break;
 538                 case PROP_ZOOM_MAX:
 539                         g_value_set_double(value, pr->zoom_max);
 540                         break;
 541                 case PROP_ZOOM_QUALITY:
 542                         g_value_set_uint(value, pr->zoom_quality);
 543                         break;
 544                 case PROP_ZOOM_2PASS:
 545                         g_value_set_boolean(value, pr->zoom_2pass);
 546                         break;
 547                 case PROP_ZOOM_EXPAND:
 548                         g_value_set_boolean(value, pr->zoom_expand);
 549                         break;
 550                 case PROP_SCROLL_RESET:
 551                         g_value_set_uint(value, pr->scroll_reset);
 552                         break;
 553                 case PROP_DELAY_FLIP:
 554                         g_value_set_boolean(value, pr->delay_flip);
 555                         break;
 556                 case PROP_LOADING:
 557                         g_value_set_boolean(value, pr->loading);
 558                         break;
 559                 case PROP_COMPLETE:
 560                         g_value_set_boolean(value, pr->complete);
 561                         break;
 562                 case PROP_CACHE_SIZE_DISPLAY:
 563 //                      g_value_set_uint(value, pr->tile_cache_max);
 564                         break;
 565                 case PROP_CACHE_SIZE_TILES:
 566                         g_value_set_uint(value, pr->source_tiles_cache_size);
 567                         break;
 568                 case PROP_WINDOW_FIT:
 569                         g_value_set_boolean(value, pr->window_fit);
 570                         break;
 571                 case PROP_WINDOW_LIMIT:
 572                         g_value_set_boolean(value, pr->window_limit);
 573                         break;
 574                 case PROP_WINDOW_LIMIT_VALUE:
 575                         g_value_set_uint(value, pr->window_limit_size);
 576                         break;
 577                 case PROP_AUTOFIT_LIMIT:
 578                         g_value_set_boolean(value, pr->autofit_limit);
 579                         break;
 580                 case PROP_AUTOFIT_LIMIT_VALUE:
 581                         g_value_set_uint(value, pr->autofit_limit_size);
 582                         break;
 583                 default:
 584                         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 585                         break;
 586                 }
 587 }
 588
 589
 590 /*
 591  *-------------------------------------------------------------------
 592  * misc utilities
 593  *-------------------------------------------------------------------
 594  */
 595
 596 static void widget_set_cursor(GtkWidget *widget, gint icon)
 597 {
 598         GdkCursor *cursor;
 599
 600         if (!gtk_widget_get_window(widget)) return;
 601
 602         if (icon == -1)
 603                 {
 604                 cursor = NULL;
 605                 }
 606         else
 607                 {
 608                 cursor = gdk_cursor_new(icon);
 609                 }
 610
 611         gdk_window_set_cursor(gtk_widget_get_window(widget), cursor);
 612
 613         if (cursor) gdk_cursor_unref(cursor);
 614 }
 615
 616 gboolean pr_clip_region(gint x, gint y, gint w, gint h,
 617                                gint clip_x, gint clip_y, gint clip_w, gint clip_h,
 618                                gint *rx, gint *ry, gint *rw, gint *rh)
 619 {
 620         if (clip_x + clip_w <= x ||
 621             clip_x >= x + w ||
 622             clip_y + clip_h <= y ||
 623             clip_y >= y + h)
 624                 {
 625                 return FALSE;
 626                 }
 627
 628         *rx = MAX(x, clip_x);
 629         *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
 630
 631         *ry = MAX(y, clip_y);
 632         *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
 633
 634         return TRUE;
 635 }
 636
 637 static gboolean pr_parent_window_sizable(PixbufRenderer *pr)
 638 {
 639         GdkWindowState state;
 640
 641         if (!pr->parent_window) return FALSE;
 642         if (!pr->window_fit) return FALSE;
 643         if (!gtk_widget_get_window(GTK_WIDGET(pr))) return FALSE;
 644
 645         if (!gtk_widget_get_window(pr->parent_window)) return FALSE;
 646         state = gdk_window_get_state(gtk_widget_get_window(pr->parent_window));
 647         if (state & GDK_WINDOW_STATE_MAXIMIZED) return FALSE;
 648
 649         return TRUE;
 650 }
 651
 652 static gboolean pr_parent_window_resize(PixbufRenderer *pr, gint w, gint h)
 653 {
 654         GtkWidget *widget;
 655         GtkWidget *parent;
 656         gint ww, wh;
 657         GtkAllocation widget_allocation;
 658         GtkAllocation parent_allocation;
 659
 660         if (!pr_parent_window_sizable(pr)) return FALSE;
 661
 662         if (pr->window_limit)
 663                 {
 664                 gint sw = gdk_screen_width() * pr->window_limit_size / 100;
 665                 gint sh = gdk_screen_height() * pr->window_limit_size / 100;
 666
 667                 if (w > sw) w = sw;
 668                 if (h > sh) h = sh;
 669                 }
 670
 671         widget = GTK_WIDGET(pr);
 672         parent = GTK_WIDGET(pr->parent_window);
 673
 674         gtk_widget_get_allocation(widget, &widget_allocation);
 675         gtk_widget_get_allocation(parent, &parent_allocation);
 676
 677         w += (parent_allocation.width - widget_allocation.width);
 678         h += (parent_allocation.height - widget_allocation.height);
 679
 680         ww = gdk_window_get_width(gtk_widget_get_window(parent));
 681         wh = gdk_window_get_height(gtk_widget_get_window(parent));
 682         if (w == ww && h == wh) return FALSE;
 683
 684         gdk_window_resize(gtk_widget_get_window(parent), w, h);
 685
 686         return TRUE;
 687 }
 688
 689 void pixbuf_renderer_set_parent(PixbufRenderer *pr, GtkWindow *window)
 690 {
 691         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 692         g_return_if_fail(window == NULL || GTK_IS_WINDOW(window));
 693
 694         pr->parent_window = GTK_WIDGET(window);
 695 }
 696
 697 GtkWindow *pixbuf_renderer_get_parent(PixbufRenderer *pr)
 698 {
 699         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
 700
 701         return GTK_WINDOW(pr->parent_window);
 702 }
 703
 704
 705 /*
 706  *-------------------------------------------------------------------
 707  * overlays
 708  *-------------------------------------------------------------------
 709  */
 710
 711
 712 gint pixbuf_renderer_overlay_add(PixbufRenderer *pr, GdkPixbuf *pixbuf, gint x, gint y,
 713                                  OverlayRendererFlags flags)
 714 {
 715         /* let's assume both renderers returns the same value */
 716         if (pr->renderer2) pr->renderer2->overlay_add(pr->renderer2, pixbuf, x, y, flags);
 717         return pr->renderer->overlay_add(pr->renderer, pixbuf, x, y, flags);
 718 }
 719
 720 void pixbuf_renderer_overlay_set(PixbufRenderer *pr, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 721 {
 722         pr->renderer->overlay_set(pr->renderer, id, pixbuf, x, y);
 723         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, pixbuf, x, y);
 724 }
 725
 726 gboolean pixbuf_renderer_overlay_get(PixbufRenderer *pr, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 727 {
 728         if (pr->renderer2) pr->renderer2->overlay_get(pr->renderer2, id, pixbuf, x, y);
 729         return pr->renderer->overlay_get(pr->renderer, id, pixbuf, x, y);
 730 }
 731
 732 void pixbuf_renderer_overlay_remove(PixbufRenderer *pr, gint id)
 733 {
 734         pr->renderer->overlay_set(pr->renderer, id, NULL, 0, 0);
 735         if (pr->renderer2) pr->renderer2->overlay_set(pr->renderer2, id, NULL, 0, 0);
 736 }
 737
 738 /*
 739  *-------------------------------------------------------------------
 740  * scroller overlay
 741  *-------------------------------------------------------------------
 742  */
 743
 744
 745 static gboolean pr_scroller_update_cb(gpointer data)
 746 {
 747         PixbufRenderer *pr = data;
 748         gint x, y;
 749         gint xinc, yinc;
 750
 751         /* this was a simple scroll by difference between scroller and mouse position,
 752          * but all this math results in a smoother result and accounts for a dead zone.
 753          */
 754
 755         if (abs(pr->scroller_xpos - pr->scroller_x) < PR_SCROLLER_DEAD_ZONE)
 756                 {
 757                 x = 0;
 758                 }
 759         else
 760                 {
 761                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 762                 x = (pr->scroller_xpos - pr->scroller_x) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 763                 x += (x > 0) ? -shift : shift;
 764                 }
 765
 766         if (abs(pr->scroller_ypos - pr->scroller_y) < PR_SCROLLER_DEAD_ZONE)
 767                 {
 768                 y = 0;
 769                 }
 770         else
 771                 {
 772                 gint shift = PR_SCROLLER_DEAD_ZONE / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 773                 y = (pr->scroller_ypos - pr->scroller_y) / 2 * PR_SCROLLER_UPDATES_PER_SEC;
 774                 y += (y > 0) ? -shift : shift;
 775                 }
 776
 777         if (abs(x) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 778                 {
 779                 xinc = x;
 780                 }
 781         else
 782                 {
 783                 xinc = pr->scroller_xinc;
 784
 785                 if (x >= 0)
 786                         {
 787                         if (xinc < 0) xinc = 0;
 788                         if (x < xinc) xinc = x;
 789                         if (x > xinc) xinc = MIN(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 790                         }
 791                 else
 792                         {
 793                         if (xinc > 0) xinc = 0;
 794                         if (x > xinc) xinc = x;
 795                         if (x < xinc) xinc = MAX(xinc + x / PR_SCROLLER_UPDATES_PER_SEC, x);
 796                         }
 797                 }
 798
 799         if (abs(y) < PR_SCROLLER_DEAD_ZONE * PR_SCROLLER_UPDATES_PER_SEC)
 800                 {
 801                 yinc = y;
 802                 }
 803         else
 804                 {
 805                 yinc = pr->scroller_yinc;
 806
 807                 if (y >= 0)
 808                         {
 809                         if (yinc < 0) yinc = 0;
 810                         if (y < yinc) yinc = y;
 811                         if (y > yinc) yinc = MIN(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 812                         }
 813                 else
 814                         {
 815                         if (yinc > 0) yinc = 0;
 816                         if (y > yinc) yinc = y;
 817                         if (y < yinc) yinc = MAX(yinc + y / PR_SCROLLER_UPDATES_PER_SEC, y);
 818                         }
 819                 }
 820
 821         pr->scroller_xinc = xinc;
 822         pr->scroller_yinc = yinc;
 823
 824         xinc = xinc / PR_SCROLLER_UPDATES_PER_SEC;
 825         yinc = yinc / PR_SCROLLER_UPDATES_PER_SEC;
 826
 827         pixbuf_renderer_scroll(pr, xinc, yinc);
 828
 829         return TRUE;
 830 }
 831
 832 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start)
 833 {
 834         if (pr->scroller_id)
 835                 {
 836                 g_source_remove(pr->scroller_id);
 837                 pr->scroller_id = 0;
 838                 }
 839
 840         if (start)
 841                 {
 842                 pr->scroller_id = g_timeout_add(1000 / PR_SCROLLER_UPDATES_PER_SEC,
 843                                                 pr_scroller_update_cb, pr);
 844                 }
 845 }
 846
 847 static void pr_scroller_start(PixbufRenderer *pr, gint x, gint y)
 848 {
 849         if (pr->scroller_overlay == -1)
 850                 {
 851                 GdkPixbuf *pixbuf;
 852                 gint w, h;
 853
 854 #ifdef GQ_BUILD
 855                 pixbuf = pixbuf_inline(PIXBUF_INLINE_SCROLLER);
 856 #else
 857                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 32, 32);
 858                 gdk_pixbuf_fill(pixbuf, 0x000000ff);
 859 #endif
 860                 w = gdk_pixbuf_get_width(pixbuf);
 861                 h = gdk_pixbuf_get_height(pixbuf);
 862
 863                 pr->scroller_overlay = pixbuf_renderer_overlay_add(pr, pixbuf, x - w / 2, y - h / 2, OVL_NORMAL);
 864                 g_object_unref(pixbuf);
 865                 }
 866
 867         pr->scroller_x = x;
 868         pr->scroller_y = y;
 869         pr->scroller_xpos = x;
 870         pr->scroller_ypos = y;
 871
 872         pr_scroller_timer_set(pr, TRUE);
 873 }
 874
 875 static void pr_scroller_stop(PixbufRenderer *pr)
 876 {
 877         if (!pr->scroller_id) return;
 878
 879         pixbuf_renderer_overlay_remove(pr, pr->scroller_overlay);
 880         pr->scroller_overlay = -1;
 881
 882         pr_scroller_timer_set(pr, FALSE);
 883 }
 884
 885 /*
 886  *-------------------------------------------------------------------
 887  * borders
 888  *-------------------------------------------------------------------
 889  */
 890
 891 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 892 {
 893         GtkStyle *style;
 894         GtkWidget *widget;
 895
 896         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
 897
 898         widget = GTK_WIDGET(pr);
 899
 900         if (color) {
 901                 GdkColor *slot;
 902
 903                 style = gtk_style_copy(gtk_widget_get_style(widget));
 904                 slot = &style->bg[GTK_STATE_NORMAL];
 905
 906                 slot->red = color->red;
 907                 slot->green = color->green;
 908                 slot->blue = color->blue;
 909                 }
 910         else {
 911                 style = gtk_style_copy(gtk_widget_get_default_style());
 912         }
 913
 914         gtk_widget_set_style(widget, style);
 915
 916         pr->renderer->update_viewport(pr->renderer);
 917         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 918 }
 919
 920 /*
 921  *-------------------------------------------------------------------
 922  * source tiles
 923  *-------------------------------------------------------------------
 924  */
 925
 926 static void pr_source_tile_free(SourceTile *st)
 927 {
 928         if (!st) return;
 929
 930         if (st->pixbuf) g_object_unref(st->pixbuf);
 931         g_free(st);
 932 }
 933
 934 static void pr_source_tile_free_all(PixbufRenderer *pr)
 935 {
 936         GList *work;
 937
 938         work = pr->source_tiles;
 939         while (work)
 940                 {
 941                 SourceTile *st;
 942
 943                 st = work->data;
 944                 work = work->next;
 945
 946                 pr_source_tile_free(st);
 947                 }
 948
 949         g_list_free(pr->source_tiles);
 950         pr->source_tiles = NULL;
 951 }
 952
 953 static void pr_source_tile_unset(PixbufRenderer *pr)
 954 {
 955         pr_source_tile_free_all(pr);
 956         pr->source_tiles_enabled = FALSE;
 957 }
 958
 959 static gboolean pr_source_tile_visible(PixbufRenderer *pr, SourceTile *st)
 960 {
 961         gint x1, y1, x2, y2;
 962
 963         if (!st) return FALSE;
 964
 965 //      x1 = ROUND_DOWN(pr->x_scroll, pr->tile_width);
 966 //      y1 = ROUND_DOWN(pr->y_scroll, pr->tile_height);
 967 //      x2 = ROUND_UP(pr->x_scroll + pr->vis_width, pr->tile_width);
 968 //      y2 = ROUND_UP(pr->y_scroll + pr->vis_height, pr->tile_height);
 969         x1 = pr->x_scroll;
 970         y1 = pr->y_scroll;
 971         x2 = pr->x_scroll + pr->vis_width;
 972         y2 = pr->y_scroll + pr->vis_height;
 973
 974         return !((gdouble)st->x * pr->scale > (gdouble)x2 ||
 975                  (gdouble)(st->x + pr->source_tile_width) * pr->scale < (gdouble)x1 ||
 976                  (gdouble)st->y * pr->scale > (gdouble)y2 ||
 977                  (gdouble)(st->y + pr->source_tile_height) * pr->scale < (gdouble)y1);
 978 }
 979
 980 static SourceTile *pr_source_tile_new(PixbufRenderer *pr, gint x, gint y)
 981 {
 982         SourceTile *st = NULL;
 983         gint count;
 984
 985         g_return_val_if_fail(pr->source_tile_width >= 1 && pr->source_tile_height >= 1, NULL);
 986
 987         if (pr->source_tiles_cache_size < 4) pr->source_tiles_cache_size = 4;
 988
 989         count = g_list_length(pr->source_tiles);
 990         if (count >= pr->source_tiles_cache_size)
 991                 {
 992                 GList *work;
 993
 994                 work = g_list_last(pr->source_tiles);
 995                 while (work && count >= pr->source_tiles_cache_size)
 996                         {
 997                         SourceTile *needle;
 998
 999                         needle = work->data;
1000                         work = work->prev;
1001
1002                         if (!pr_source_tile_visible(pr, needle))
1003                                 {
1004                                 pr->source_tiles = g_list_remove(pr->source_tiles, needle);
1005
1006                                 if (pr->func_tile_dispose)
1007                                         {
1008                                         pr->func_tile_dispose(pr, needle->x, needle->y,
1009                                                               pr->source_tile_width, pr->source_tile_height,
1010                                                               needle->pixbuf, pr->func_tile_data);
1011                                         }
1012
1013                                 if (!st)
1014                                         {
1015                                         st = needle;
1016                                         }
1017                                 else
1018                                         {
1019                                         pr_source_tile_free(needle);
1020                                         }
1021
1022                                 count--;
1023                                 }
1024                         }
1025                 }
1026
1027         if (!st)
1028                 {
1029                 st = g_new0(SourceTile, 1);
1030                 st->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
1031                                             pr->source_tile_width, pr->source_tile_height);
1032                 }
1033
1034         st->x = ROUND_DOWN(x, pr->source_tile_width);
1035         st->y = ROUND_DOWN(y, pr->source_tile_height);
1036         st->blank = TRUE;
1037
1038         pr->source_tiles = g_list_prepend(pr->source_tiles, st);
1039
1040         return st;
1041 }
1042
1043 static SourceTile *pr_source_tile_request(PixbufRenderer *pr, gint x, gint y)
1044 {
1045         SourceTile *st;
1046
1047         st = pr_source_tile_new(pr, x, y);
1048         if (!st) return NULL;
1049
1050         if (pr->func_tile_request &&
1051             pr->func_tile_request(pr, st->x, st->y,
1052                                    pr->source_tile_width, pr->source_tile_height, st->pixbuf, pr->func_tile_data))
1053                 {
1054                 st->blank = FALSE;
1055                 }
1056
1057         pr->renderer->invalidate_region(pr->renderer, st->x * pr->scale, st->y * pr->scale,
1058                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1059         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, st->x * pr->scale, st->y * pr->scale,
1060                                   pr->source_tile_width * pr->scale, pr->source_tile_height * pr->scale);
1061         return st;
1062 }
1063
1064 static SourceTile *pr_source_tile_find(PixbufRenderer *pr, gint x, gint y)
1065 {
1066         GList *work;
1067
1068         work = pr->source_tiles;
1069         while (work)
1070                 {
1071                 SourceTile *st = work->data;
1072
1073                 if (x >= st->x && x < st->x + pr->source_tile_width &&
1074                     y >= st->y && y < st->y + pr->source_tile_height)
1075                         {
1076                         if (work != pr->source_tiles)
1077                                 {
1078                                 pr->source_tiles = g_list_remove_link(pr->source_tiles, work);
1079                                 pr->source_tiles = g_list_concat(work, pr->source_tiles);
1080                                 }
1081                         return st;
1082                         }
1083
1084                 work = work->next;
1085                 }
1086
1087         return NULL;
1088 }
1089
1090 GList *pr_source_tile_compute_region(PixbufRenderer *pr, gint x, gint y, gint w, gint h, gboolean request)
1091 {
1092         gint x1, y1;
1093         GList *list = NULL;
1094         gint sx, sy;
1095
1096         if (x < 0) x = 0;
1097         if (y < 0) y = 0;
1098         if (w > pr->image_width) w = pr->image_width;
1099         if (h > pr->image_height) h = pr->image_height;
1100
1101         sx = ROUND_DOWN(x, pr->source_tile_width);
1102         sy = ROUND_DOWN(y, pr->source_tile_height);
1103
1104         for (x1 = sx; x1 < x + w; x1+= pr->source_tile_width)
1105                 {
1106                 for (y1 = sy; y1 < y + h; y1 += pr->source_tile_height)
1107                         {
1108                         SourceTile *st;
1109
1110                         st = pr_source_tile_find(pr, x1, y1);
1111                         if (!st && request) st = pr_source_tile_request(pr, x1, y1);
1112
1113                         if (st) list = g_list_prepend(list, st);
1114                         }
1115                 }
1116
1117         return g_list_reverse(list);
1118 }
1119
1120 static void pr_source_tile_changed(PixbufRenderer *pr, gint x, gint y, gint width, gint height)
1121 {
1122         GList *work;
1123
1124         if (width < 1 || height < 1) return;
1125
1126         work = pr->source_tiles;
1127         while (work)
1128                 {
1129                 SourceTile *st;
1130                 gint rx, ry, rw, rh;
1131
1132                 st = work->data;
1133                 work = work->next;
1134
1135                 if (pr_clip_region(st->x, st->y, pr->source_tile_width, pr->source_tile_height,
1136                                    x, y, width, height,
1137                                    &rx, &ry, &rw, &rh))
1138                         {
1139                         GdkPixbuf *pixbuf;
1140
1141                         pixbuf = gdk_pixbuf_new_subpixbuf(st->pixbuf, rx - st->x, ry - st->y, rw, rh);
1142                         if (pr->func_tile_request &&
1143                             pr->func_tile_request(pr, rx, ry, rw, rh, pixbuf, pr->func_tile_data))
1144                                 {
1145                                         pr->renderer->invalidate_region(pr->renderer, rx * pr->scale, ry * pr->scale,
1146                                                               rw * pr->scale, rh * pr->scale);
1147                                         if (pr->renderer2) pr->renderer2->invalidate_region(pr->renderer2, rx * pr->scale, ry * pr->scale,
1148                                                                 rw * pr->scale, rh * pr->scale);
1149                                 }
1150                         g_object_unref(pixbuf);
1151                         }
1152                 }
1153 }
1154
1155 void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
1156                                gint tile_width, gint tile_height, gint cache_size,
1157                                PixbufRendererTileRequestFunc func_request,
1158                                PixbufRendererTileDisposeFunc func_dispose,
1159                                gpointer user_data,
1160                                gdouble zoom)
1161 {
1162         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1163         g_return_if_fail(tile_width >= 32 && tile_width >= 32);
1164         g_return_if_fail(width >= 32 && height > 32);
1165         g_return_if_fail(func_request != NULL);
1166
1167         if (pr->pixbuf) g_object_unref(pr->pixbuf);
1168         pr->pixbuf = NULL;
1169
1170         pr_source_tile_unset(pr);
1171
1172         if (cache_size < 4) cache_size = 4;
1173
1174         pr->source_tiles_enabled = TRUE;
1175         pr->source_tiles_cache_size = cache_size;
1176         pr->source_tile_width = tile_width;
1177         pr->source_tile_height = tile_height;
1178
1179         pr->image_width = width;
1180         pr->image_height = height;
1181
1182         pr->func_tile_request = func_request;
1183         pr->func_tile_dispose = func_dispose;
1184         pr->func_tile_data = user_data;
1185
1186         pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
1187 }
1188
1189 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
1190 {
1191         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1192         g_return_if_fail(width >= 32 && height > 32);
1193
1194         if (!pr->source_tiles_enabled) return;
1195         if (pr->image_width == width && pr->image_height == height) return;
1196
1197         pr->image_width = width;
1198         pr->image_height = height;
1199
1200         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
1201 }
1202
1203 gint pixbuf_renderer_get_tiles(PixbufRenderer *pr)
1204 {
1205         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
1206
1207         return pr->source_tiles_enabled;
1208 }
1209
1210 static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
1211                                 PrZoomFlags flags, gint x, gint y)
1212 {
1213         gdouble zoom = pr->zoom;
1214
1215         if (increment == 0.0) return;
1216
1217         if (zoom == 0.0)
1218                 {
1219                 if (pr->scale < 1.0)
1220                         {
1221                         zoom = 0.0 - 1.0 / pr->scale;
1222                         }
1223                 else
1224                         {
1225                         zoom = pr->scale;
1226                         }
1227                 }
1228
1229         if (increment < 0.0)
1230                 {
1231                 if (zoom >= 1.0 && zoom + increment < 1.0)
1232                         {
1233                         zoom = zoom + increment - 2.0;
1234                         }
1235                 else
1236                         {
1237                         zoom = zoom + increment;
1238                         }
1239                 }
1240         else
1241                 {
1242                 if (zoom <= -1.0 && zoom + increment > -1.0)
1243                         {
1244                         zoom = zoom + increment + 2.0;
1245                         }
1246                 else
1247                         {
1248                         zoom = zoom + increment;
1249                         }
1250                 }
1251
1252         pr_zoom_sync(pr, zoom, flags, x, y);
1253 }
1254
1255
1256 /*
1257  *-------------------------------------------------------------------
1258  * signal emission
1259  *-------------------------------------------------------------------
1260  */
1261
1262 static void pr_update_signal(PixbufRenderer *pr)
1263 {
1264 #if 0
1265         log_printf("FIXME: send updated signal\n");
1266 #endif
1267         DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
1268         pr->debug_updated = TRUE;
1269 }
1270
1271 static void pr_zoom_signal(PixbufRenderer *pr)
1272 {
1273         g_signal_emit(pr, signals[SIGNAL_ZOOM], 0, pr->zoom);
1274 }
1275
1276 static void pr_clicked_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1277 {
1278         g_signal_emit(pr, signals[SIGNAL_CLICKED], 0, bevent);
1279 }
1280
1281 static void pr_scroll_notify_signal(PixbufRenderer *pr)
1282 {
1283         g_signal_emit(pr, signals[SIGNAL_SCROLL_NOTIFY], 0);
1284 }
1285
1286 void pr_render_complete_signal(PixbufRenderer *pr)
1287 {
1288         if (!pr->complete)
1289                 {
1290                 g_signal_emit(pr, signals[SIGNAL_RENDER_COMPLETE], 0);
1291                 g_object_set(G_OBJECT(pr), "complete", TRUE, NULL);
1292                 }
1293         if (pr->debug_updated)
1294                 {
1295                 DEBUG_1("%s pixbuf renderer done %p", get_exec_time(), pr);
1296                 pr->debug_updated = FALSE;
1297                 }
1298 }
1299
1300 static void pr_drag_signal(PixbufRenderer *pr, GdkEventButton *bevent)
1301 {
1302         g_signal_emit(pr, signals[SIGNAL_DRAG], 0, bevent);
1303 }
1304
1305 static void pr_update_pixel_signal(PixbufRenderer *pr)
1306 {
1307         g_signal_emit(pr, signals[SIGNAL_UPDATE_PIXEL], 0);
1308 }
1309
1310 /*
1311  *-------------------------------------------------------------------
1312  * sync and clamp
1313  *-------------------------------------------------------------------
1314  */
1315
1316
1317 void pr_tile_coords_map_orientation(gint orientation,
1318                                      gdouble tile_x, gdouble tile_y, /* coordinates of the tile */
1319                                      gdouble image_w, gdouble image_h,
1320                                      gdouble tile_w, gdouble tile_h,
1321                                      gdouble *res_x, gdouble *res_y)
1322 {
1323         *res_x = tile_x;
1324         *res_y = tile_y;
1325         switch (orientation)
1326                 {
1327                 case EXIF_ORIENTATION_TOP_LEFT:
1328                         /* normal -- nothing to do */
1329                         break;
1330                 case EXIF_ORIENTATION_TOP_RIGHT:
1331                         /* mirrored */
1332                         *res_x = image_w - tile_x - tile_w;
1333                         break;
1334                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1335                         /* upside down */
1336                         *res_x = image_w - tile_x - tile_w;
1337                         *res_y = image_h - tile_y - tile_h;
1338                         break;
1339                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1340                         /* flipped */
1341                         *res_y = image_h - tile_y - tile_h;
1342                         break;
1343                 case EXIF_ORIENTATION_LEFT_TOP:
1344                         *res_x = tile_y;
1345                         *res_y = tile_x;
1346                         break;
1347                 case EXIF_ORIENTATION_RIGHT_TOP:
1348                         /* rotated -90 (270) */
1349                         *res_x = tile_y;
1350                         *res_y = image_w - tile_x - tile_w;
1351                         break;
1352                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1353                         *res_x = image_h - tile_y - tile_h;
1354                         *res_y = image_w - tile_x - tile_w;
1355                         break;
1356                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1357                         /* rotated 90 */
1358                         *res_x = image_h - tile_y - tile_h;
1359                         *res_y = tile_x;
1360                         break;
1361                 default:
1362                         /* The other values are out of range */
1363                         break;
1364                 }
1365 //      log_printf("tile coord y:%f, ih:%d, th:%f ry:%f\n", tile_y, image_h, tile_h, *res_x);
1366 }
1367
1368 void pr_tile_region_map_orientation(gint orientation,
1369                                      gint area_x, gint area_y, /* coordinates of the area inside tile */
1370                                      gint tile_w, gint tile_h,
1371                                      gint area_w, gint area_h,
1372                                      gint *res_x, gint *res_y,
1373                                      gint *res_w, gint *res_h)
1374 {
1375         *res_x = area_x;
1376         *res_y = area_y;
1377         *res_w = area_w;
1378         *res_h = area_h;
1379
1380         switch (orientation)
1381                 {
1382                 case EXIF_ORIENTATION_TOP_LEFT:
1383                         /* normal -- nothing to do */
1384                         break;
1385                 case EXIF_ORIENTATION_TOP_RIGHT:
1386                         /* mirrored */
1387                         *res_x = tile_w - area_x - area_w;
1388                         break;
1389                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1390                         /* upside down */
1391                         *res_x = tile_w - area_x - area_w;
1392                         *res_y = tile_h - area_y - area_h;
1393                         break;
1394                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1395                         /* flipped */
1396                         *res_y = tile_h - area_y - area_h;
1397                         break;
1398                 case EXIF_ORIENTATION_LEFT_TOP:
1399                         *res_x = area_y;
1400                         *res_y = area_x;
1401                         *res_w = area_h;
1402                         *res_h = area_w;
1403                         break;
1404                 case EXIF_ORIENTATION_RIGHT_TOP:
1405                         /* rotated -90 (270) */
1406                         *res_x = area_y;
1407                         *res_y = tile_w - area_x - area_w;
1408                         *res_w = area_h;
1409                         *res_h = area_w;
1410                         break;
1411                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1412                         *res_x = tile_h - area_y - area_h;
1413                         *res_y = tile_w - area_x - area_w;
1414                         *res_w = area_h;
1415                         *res_h = area_w;
1416                         break;
1417                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1418                         /* rotated 90 */
1419                         *res_x = tile_h - area_y - area_h;
1420                         *res_y = area_x;
1421                         *res_w = area_h;
1422                         *res_h = area_w;
1423                         break;
1424                 default:
1425                         /* The other values are out of range */
1426                         break;
1427                 }
1428 //      log_printf("inside y:%d, th:%d, ah:%d ry:%d\n", area_y, tile_h, area_h, *res_x);
1429 }
1430
1431 void pr_coords_map_orientation_reverse(gint orientation,
1432                                      gint area_x, gint area_y,
1433                                      gint tile_w, gint tile_h,
1434                                      gint area_w, gint area_h,
1435                                      gint *res_x, gint *res_y,
1436                                      gint *res_w, gint *res_h)
1437 {
1438         *res_x = area_x;
1439         *res_y = area_y;
1440         *res_w = area_w;
1441         *res_h = area_h;
1442
1443         switch (orientation)
1444                 {
1445                 case EXIF_ORIENTATION_TOP_LEFT:
1446                         /* normal -- nothing to do */
1447                         break;
1448                 case EXIF_ORIENTATION_TOP_RIGHT:
1449                         /* mirrored */
1450                         *res_x = tile_w - area_x - area_w;
1451                         break;
1452                 case EXIF_ORIENTATION_BOTTOM_RIGHT:
1453                         /* upside down */
1454                         *res_x = tile_w - area_x - area_w;
1455                         *res_y = tile_h - area_y - area_h;
1456                         break;
1457                 case EXIF_ORIENTATION_BOTTOM_LEFT:
1458                         /* flipped */
1459                         *res_y = tile_h - area_y - area_h;
1460                         break;
1461                 case EXIF_ORIENTATION_LEFT_TOP:
1462                         *res_x = area_y;
1463                         *res_y = area_x;
1464                         *res_w = area_h;
1465                         *res_h = area_w;
1466                         break;
1467                 case EXIF_ORIENTATION_RIGHT_TOP:
1468                         /* rotated -90 (270) */
1469                         *res_x = tile_w - area_y - area_h;
1470                         *res_y = area_x;
1471                         *res_w = area_h;
1472                         *res_h = area_w;
1473                         break;
1474                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
1475                         *res_x = tile_w - area_y - area_h;
1476                         *res_y = tile_h - area_x - area_w;
1477                         *res_w = area_h;
1478                         *res_h = area_w;
1479                         break;
1480                 case EXIF_ORIENTATION_LEFT_BOTTOM:
1481                         /* rotated 90 */
1482                         *res_x = area_y;
1483                         *res_y = tile_h - area_x - area_w;
1484                         *res_w = area_h;
1485                         *res_h = area_w;
1486                         break;
1487                 default:
1488                         /* The other values are out of range */
1489                         break;
1490                 }
1491 }
1492
1493
1494
1495 static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
1496 {
1497         gint src_x, src_y;
1498         if (!pr->width || !pr->height) return;
1499
1500         /*
1501          * Update norm_center only if the image is bigger than the window.
1502          * With this condition the stored center survives also a temporary display
1503          * of the "broken image" icon.
1504         */
1505
1506         if (pr->width > pr->viewport_width)
1507                 {
1508                 src_x = pr->x_scroll + pr->vis_width / 2;
1509                 pr->norm_center_x = (gdouble)src_x / pr->width;
1510                 }
1511
1512         if (pr->height > pr->viewport_height)
1513                 {
1514                 src_y = pr->y_scroll + pr->vis_height / 2;
1515                 pr->norm_center_y = (gdouble)src_y / pr->height;
1516                 }
1517 }
1518
1519
1520 static gboolean pr_scroll_clamp(PixbufRenderer *pr)
1521 {
1522         gint old_xs;
1523         gint old_ys;
1524
1525         if (pr->zoom == 0.0)
1526                 {
1527                 pr->x_scroll = 0;
1528                 pr->y_scroll = 0;
1529
1530                 return FALSE;
1531                 }
1532
1533         old_xs = pr->x_scroll;
1534         old_ys = pr->y_scroll;
1535
1536         if (pr->x_offset > 0)
1537                 {
1538                 pr->x_scroll = 0;
1539                 }
1540         else
1541                 {
1542                 pr->x_scroll = CLAMP(pr->x_scroll, 0, pr->width - pr->vis_width);
1543                 }
1544
1545         if (pr->y_offset > 0)
1546                 {
1547                 pr->y_scroll = 0;
1548                 }
1549         else
1550                 {
1551                 pr->y_scroll = CLAMP(pr->y_scroll, 0, pr->height - pr->vis_height);
1552                 }
1553
1554         pixbuf_renderer_sync_scroll_center(pr);
1555
1556         return (old_xs != pr->x_scroll || old_ys != pr->y_scroll);
1557 }
1558
1559 static gboolean pr_size_clamp(PixbufRenderer *pr)
1560 {
1561         gint old_vw, old_vh;
1562
1563         old_vw = pr->vis_width;
1564         old_vh = pr->vis_height;
1565
1566         if (pr->width < pr->viewport_width)
1567                 {
1568                 pr->vis_width = pr->width;
1569                 pr->x_offset = (pr->viewport_width - pr->width) / 2;
1570                 }
1571         else
1572                 {
1573                 pr->vis_width = pr->viewport_width;
1574                 pr->x_offset = 0;
1575                 }
1576
1577         if (pr->height < pr->viewport_height)
1578                 {
1579                 pr->vis_height = pr->height;
1580                 pr->y_offset = (pr->viewport_height - pr->height) / 2;
1581                 }
1582         else
1583                 {
1584                 pr->vis_height = pr->viewport_height;
1585                 pr->y_offset = 0;
1586                 }
1587
1588         pixbuf_renderer_sync_scroll_center(pr);
1589
1590         return (old_vw != pr->vis_width || old_vh != pr->vis_height);
1591 }
1592
1593 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
1594                               PrZoomFlags flags)
1595 {
1596         gint w, h;
1597         gdouble scale;
1598         gboolean force = !!(flags & PR_ZOOM_FORCE);
1599         gboolean new = !!(flags & PR_ZOOM_NEW);
1600
1601         zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
1602
1603         if (pr->zoom == zoom && !force) return FALSE;
1604
1605         w = pr->image_width;
1606         h = pr->image_height;
1607
1608         if (zoom == 0.0 && !pr->pixbuf)
1609                 {
1610                 scale = 1.0;
1611                 }
1612         else if (zoom == 0.0)
1613                 {
1614                 gint max_w;
1615                 gint max_h;
1616                 gboolean sizeable;
1617
1618                 sizeable = (new && pr_parent_window_sizable(pr));
1619
1620                 if (sizeable)
1621                         {
1622                         max_w = gdk_screen_width();
1623                         max_h = gdk_screen_height();
1624
1625                         if (pr->window_limit)
1626                                 {
1627                                 max_w = max_w * pr->window_limit_size / 100;
1628                                 max_h = max_h * pr->window_limit_size / 100;
1629                                 }
1630                         }
1631                 else
1632                         {
1633                         max_w = pr->viewport_width;
1634                         max_h = pr->viewport_height;
1635                         }
1636
1637                 if ((pr->zoom_expand && !sizeable) || w > max_w || h > max_h)
1638                         {
1639                         if ((gdouble)max_w / w > (gdouble)max_h / h / pr->aspect_ratio)
1640                                 {
1641                                 scale = (gdouble)max_h / h / pr->aspect_ratio;
1642                                 h = max_h;
1643                                 w = w * scale + 0.5;
1644                                 if (w > max_w) w = max_w;
1645                                 }
1646                         else
1647                                 {
1648                                 scale = (gdouble)max_w / w;
1649                                 w = max_w;
1650                                 h = h * scale * pr->aspect_ratio + 0.5;
1651                                 if (h > max_h) h = max_h;
1652                                 }
1653
1654                         if (pr->autofit_limit)
1655                                 {
1656                                 gdouble factor = (gdouble)pr->autofit_limit_size / 100;
1657                                 w = w * factor + 0.5;
1658                                 h = h * factor + 0.5;
1659                                 scale = scale * factor;
1660                                 }
1661
1662                         if (w < 1) w = 1;
1663                         if (h < 1) h = 1;
1664                         }
1665                 else
1666                         {
1667                         scale = 1.0;
1668                         }
1669                 }
1670         else if (zoom > 0.0) /* zoom orig, in */
1671                 {
1672                 scale = zoom;
1673                 w = w * scale;
1674                 h = h * scale * pr->aspect_ratio;
1675                 }
1676         else /* zoom out */
1677                 {
1678                 scale = 1.0 / (0.0 - zoom);
1679                 w = w * scale;
1680                 h = h * scale * pr->aspect_ratio;
1681                 }
1682
1683         pr->zoom = zoom;
1684         pr->width = w;
1685         pr->height = h;
1686         pr->scale = scale;
1687
1688         return TRUE;
1689 }
1690
1691 static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
1692                          PrZoomFlags flags, gint px, gint py)
1693 {
1694         gdouble old_scale;
1695         gint old_cx, old_cy;
1696         gboolean clamped;
1697         gboolean sized;
1698         gboolean center_point = !!(flags & PR_ZOOM_CENTER);
1699         gboolean force = !!(flags & PR_ZOOM_FORCE);
1700         gboolean new = !!(flags & PR_ZOOM_NEW);
1701         gboolean lazy = !!(flags & PR_ZOOM_LAZY);
1702         PrZoomFlags clamp_flags = flags;
1703         gdouble old_center_x = pr->norm_center_x;
1704         gdouble old_center_y = pr->norm_center_y;
1705
1706         old_scale = pr->scale;
1707         if (center_point)
1708                 {
1709                 px = CLAMP(px, 0, pr->width);
1710                 py = CLAMP(py, 0, pr->height);
1711                 old_cx = pr->x_scroll + (px - pr->x_offset);
1712                 old_cy = pr->y_scroll + (py - pr->y_offset);
1713                 }
1714         else
1715                 {
1716                 px = py = 0;
1717                 old_cx = pr->x_scroll + pr->vis_width / 2;
1718                 old_cy = pr->y_scroll + pr->vis_height / 2;
1719                 }
1720
1721         if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
1722         if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
1723
1724         clamped = pr_size_clamp(pr);
1725         sized = pr_parent_window_resize(pr, pr->width, pr->height);
1726
1727         if (force && new)
1728                 {
1729                 switch (pr->scroll_reset)
1730                         {
1731                         case PR_SCROLL_RESET_NOCHANGE:
1732                                 /* maintain old scroll position */
1733                                 pr->x_scroll = ((gdouble)pr->image_width * old_center_x * pr->scale) - pr->vis_width / 2;
1734                                 pr->y_scroll = ((gdouble)pr->image_height * old_center_y * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1735                                 break;
1736                         case PR_SCROLL_RESET_CENTER:
1737                                 /* center new image */
1738                                 pr->x_scroll = ((gdouble)pr->image_width / 2.0 * pr->scale) - pr->vis_width / 2;
1739                                 pr->y_scroll = ((gdouble)pr->image_height / 2.0 * pr->scale * pr->aspect_ratio) - pr->vis_height / 2;
1740                                 break;
1741                         case PR_SCROLL_RESET_TOPLEFT:
1742                         default:
1743                                 /* reset to upper left */
1744                                 pr->x_scroll = 0;
1745                                 pr->y_scroll = 0;
1746                                 break;
1747                         }
1748                 }
1749         else
1750                 {
1751                 /* user zoom does not force, so keep visible center point */
1752                 if (center_point)
1753                         {
1754                         pr->x_scroll = old_cx / old_scale * pr->scale - (px - pr->x_offset);
1755                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (py - pr->y_offset);
1756                         }
1757                 else
1758                         {
1759                         pr->x_scroll = old_cx / old_scale * pr->scale - (pr->vis_width / 2);
1760                         pr->y_scroll = old_cy / old_scale * pr->scale * pr->aspect_ratio - (pr->vis_height / 2);
1761                         }
1762                 }
1763
1764         pr_scroll_clamp(pr);
1765
1766         pr->renderer->update_zoom(pr->renderer, lazy);
1767         if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
1768
1769         pr_scroll_notify_signal(pr);
1770         pr_zoom_signal(pr);
1771         pr_update_signal(pr);
1772 }
1773
1774 static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
1775 {
1776         gboolean zoom_changed = FALSE;
1777
1778         gint new_viewport_width = new_width;
1779         gint new_viewport_height = new_height;
1780
1781         if (!pr->stereo_temp_disable)
1782                 {
1783                 if (pr->stereo_mode & PR_STEREO_HORIZ)
1784                         {
1785                         new_viewport_width = new_width / 2;
1786                         }
1787                 else if (pr->stereo_mode & PR_STEREO_VERT)
1788                         {
1789                         new_viewport_height = new_height / 2;
1790                         }
1791                 else if (pr->stereo_mode & PR_STEREO_FIXED)
1792                         {
1793                         new_viewport_width = pr->stereo_fixed_width;
1794                         new_viewport_height = pr->stereo_fixed_height;
1795                         }
1796                 }
1797
1798         if (pr->window_width == new_width && pr->window_height == new_height &&
1799             pr->viewport_width == new_viewport_width && pr->viewport_height == new_viewport_height) return;
1800
1801         pr->window_width = new_width;
1802         pr->window_height = new_height;
1803         pr->viewport_width = new_viewport_width;
1804         pr->viewport_height = new_viewport_height;
1805
1806         if (pr->zoom == 0.0)
1807                 {
1808                 gdouble old_scale = pr->scale;
1809                 pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
1810                 zoom_changed = (old_scale != pr->scale);
1811                 }
1812
1813         pr_size_clamp(pr);
1814         pr_scroll_clamp(pr);
1815
1816         if (zoom_changed)
1817                 {
1818                 pr->renderer->update_zoom(pr->renderer, FALSE);
1819                 if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
1820                 }
1821
1822         pr->renderer->update_viewport(pr->renderer);
1823         if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
1824
1825
1826         /* ensure scroller remains visible */
1827         if (pr->scroller_overlay != -1)
1828                 {
1829                 gboolean update = FALSE;
1830
1831                 if (pr->scroller_x > new_width)
1832                         {
1833                         pr->scroller_x = new_width;
1834                         pr->scroller_xpos = new_width;
1835                         update = TRUE;
1836                         }
1837                 if (pr->scroller_y > new_height)
1838                         {
1839                         pr->scroller_y = new_height;
1840                         pr->scroller_ypos = new_height;
1841                         update = TRUE;
1842                         }
1843
1844                 if (update)
1845                         {
1846                         GdkPixbuf *pixbuf;
1847
1848                         if (pixbuf_renderer_overlay_get(pr, pr->scroller_overlay, &pixbuf, NULL, NULL))
1849                                 {
1850                                 gint w, h;
1851
1852                                 w = gdk_pixbuf_get_width(pixbuf);
1853                                 h = gdk_pixbuf_get_height(pixbuf);
1854                                 pixbuf_renderer_overlay_set(pr, pr->scroller_overlay, pixbuf,
1855                                                             pr->scroller_x - w / 2, pr->scroller_y - h / 2);
1856                                 }
1857                         }
1858                 }
1859
1860         pr_scroll_notify_signal(pr);
1861         if (zoom_changed) pr_zoom_signal(pr);
1862         pr_update_signal(pr);
1863 }
1864
1865 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
1866 {
1867         PixbufRenderer *pr = data;
1868
1869         pr_size_sync(pr, allocation->width, allocation->height);
1870 }
1871
1872 /*
1873  *-------------------------------------------------------------------
1874  * scrolling
1875  *-------------------------------------------------------------------
1876  */
1877
1878 void pixbuf_renderer_scroll(PixbufRenderer *pr, gint x, gint y)
1879 {
1880         gint old_x, old_y;
1881         gint x_off, y_off;
1882
1883         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
1884
1885         if (!pr->pixbuf && !pr->source_tiles_enabled) return;
1886
1887         old_x = pr->x_scroll;
1888         old_y = pr->y_scroll;
1889
1890         pr->x_scroll += x;
1891         pr->y_scroll += y;
1892
1893         pr_scroll_clamp(pr);
1894
1895         pixbuf_renderer_sync_scroll_center(pr);
1896
1897         if (pr->x_scroll == old_x && pr->y_scroll == old_y) return;
1898
1899         pr_scroll_notify_signal(pr);
1900
1901         x_off = pr->x_scroll - old_x;
1902         y_off = pr->y_scroll - old_y;
1903
1904         pr->renderer->scroll(pr->renderer, x_off, y_off);
1905         if (pr->renderer2) pr->renderer2->scroll(pr->renderer2, x_off, y_off);
1906 }
1907
1908 void pixbuf_renderer_scroll_to_point(PixbufRenderer *pr, gint x, gint y,
1909                                      gdouble x_align, gdouble y_align)
1910 {
1911         gint px, py;
1912         gint ax, ay;
1913
1914         x_align = CLAMP(x_align, 0.0, 1.0);
1915         y_align = CLAMP(y_align, 0.0, 1.0);
1916
1917         ax = (gdouble)pr->vis_width * x_align;
1918         ay = (gdouble)pr->vis_height * y_align;
1919
1920         px = (gdouble)x * pr->scale - (pr->x_scroll + ax);
1921         py = (gdouble)y * pr->scale * pr->aspect_ratio - (pr->y_scroll + ay);
1922
1923         pixbuf_renderer_scroll(pr, px, py);
1924 }
1925
1926 /* get or set coordinates of viewport center in the image, in range 0.0 - 1.0 */
1927
1928 void pixbuf_renderer_get_scroll_center(PixbufRenderer *pr, gdouble *x, gdouble *y)
1929 {
1930         *x = pr->norm_center_x;
1931         *y = pr->norm_center_y;
1932 }
1933
1934 void pixbuf_renderer_set_scroll_center(PixbufRenderer *pr, gdouble x, gdouble y)
1935 {
1936         gdouble dst_x, dst_y;
1937
1938         dst_x = x * pr->width  - pr->vis_width  / 2 - pr->x_scroll + CLAMP(pr->subpixel_x_scroll, -1.0, 1.0);
1939         dst_y = y * pr->height - pr->vis_height / 2 - pr->y_scroll + CLAMP(pr->subpixel_y_scroll, -1.0, 1.0);
1940
1941         pr->subpixel_x_scroll = dst_x - (gint)dst_x;
1942         pr->subpixel_y_scroll = dst_y - (gint)dst_y;
1943
1944         pixbuf_renderer_scroll(pr, (gint)dst_x, (gint)dst_y);
1945 }
1946
1947 /*
1948  *-------------------------------------------------------------------
1949  * mouse
1950  *-------------------------------------------------------------------
1951  */
1952
1953 static gboolean pr_mouse_motion_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
1954 {
1955         PixbufRenderer *pr;
1956         gint accel;
1957
1958         /* This is a hack, but work far the best, at least for single pointer systems.
1959          * See http://bugzilla.gnome.org/show_bug.cgi?id=587714 for more. */
1960         gint x, y;
1961         gdk_window_get_pointer (bevent->window, &x, &y, NULL);
1962         bevent->x = x;
1963         bevent->y = y;
1964
1965         pr = PIXBUF_RENDERER(widget);
1966
1967         if (pr->scroller_id)
1968                 {
1969                 pr->scroller_xpos = bevent->x;
1970                 pr->scroller_ypos = bevent->y;
1971                 }
1972
1973         pr->x_mouse = bevent->x;
1974         pr->y_mouse = bevent->y;
1975         pr_update_pixel_signal(pr);
1976
1977         if (!pr->in_drag || !gdk_pointer_is_grabbed()) return FALSE;
1978
1979         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
1980                 {
1981                 pr->drag_moved++;
1982                 }
1983         else
1984                 {
1985                 widget_set_cursor(widget, GDK_FLEUR);
1986                 }
1987
1988         if (bevent->state & GDK_CONTROL_MASK)
1989                 {
1990                 accel = PR_PAN_SHIFT_MULTIPLIER;
1991                 }
1992         else
1993                 {
1994                 accel = 1;
1995                 }
1996
1997         /* do the scroll */
1998         pixbuf_renderer_scroll(pr, (pr->drag_last_x - bevent->x) * accel,
1999                                (pr->drag_last_y - bevent->y) * accel);
2000
2001         pr_drag_signal(pr, bevent);
2002
2003         pr->drag_last_x = bevent->x;
2004         pr->drag_last_y = bevent->y;
2005
2006         /* This is recommended by the GTK+ documentation, but does not work properly.
2007          * Use deprecated way until GTK+ gets a solution for correct motion hint handling:
2008          * http://bugzilla.gnome.org/show_bug.cgi?id=587714
2009          */
2010         /* gdk_event_request_motions (bevent); */
2011         return FALSE;
2012 }
2013
2014 static gboolean pr_leave_notify_cb(GtkWidget *widget, GdkEventCrossing *cevent, gpointer data)
2015 {
2016         PixbufRenderer *pr;
2017
2018         pr = PIXBUF_RENDERER(widget);
2019         pr->x_mouse = -1;
2020         pr->y_mouse = -1;
2021
2022         pr_update_pixel_signal(pr);
2023         return FALSE;
2024 }
2025
2026 static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2027 {
2028         PixbufRenderer *pr;
2029         GtkWidget *parent;
2030
2031         pr = PIXBUF_RENDERER(widget);
2032
2033         if (pr->scroller_id) return TRUE;
2034
2035         switch (bevent->button)
2036                 {
2037                 case MOUSE_BUTTON_LEFT:
2038                         pr->in_drag = TRUE;
2039                         pr->drag_last_x = bevent->x;
2040                         pr->drag_last_y = bevent->y;
2041                         pr->drag_moved = 0;
2042                         gdk_pointer_grab(gtk_widget_get_window(widget), FALSE,
2043                                          GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK,
2044                                          NULL, NULL, bevent->time);
2045                         gtk_grab_add(widget);
2046                         break;
2047                 case MOUSE_BUTTON_MIDDLE:
2048                         pr->drag_moved = 0;
2049                         break;
2050                 case MOUSE_BUTTON_RIGHT:
2051                         pr_clicked_signal(pr, bevent);
2052                         break;
2053                 default:
2054                         break;
2055                 }
2056
2057         parent = gtk_widget_get_parent(widget);
2058 #if GTK_CHECK_VERSION(2,20,0)
2059         if (widget && gtk_widget_get_can_focus(parent))
2060 #else
2061         if (widget && GTK_WIDGET_CAN_FOCUS(parent))
2062 #endif
2063                 {
2064                 gtk_widget_grab_focus(parent);
2065                 }
2066
2067         return FALSE;
2068 }
2069
2070 static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
2071 {
2072         PixbufRenderer *pr;
2073
2074         pr = PIXBUF_RENDERER(widget);
2075
2076         if (pr->scroller_id)
2077                 {
2078                 pr_scroller_stop(pr);
2079                 return TRUE;
2080                 }
2081
2082 #if GTK_CHECK_VERSION(2,20,0)
2083         if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
2084 #else
2085         if (gdk_pointer_is_grabbed() && GTK_WIDGET_HAS_GRAB(pr))
2086 #endif
2087                 {
2088                 gtk_grab_remove(widget);
2089                 gdk_pointer_ungrab(bevent->time);
2090                 widget_set_cursor(widget, -1);
2091                 }
2092
2093         if (pr->drag_moved < PR_DRAG_SCROLL_THRESHHOLD)
2094                 {
2095                 if (bevent->button == MOUSE_BUTTON_LEFT && (bevent->state & GDK_CONTROL_MASK))
2096                         {
2097                         pr_scroller_start(pr, bevent->x, bevent->y);
2098                         }
2099                 else if (bevent->button == MOUSE_BUTTON_LEFT || bevent->button == MOUSE_BUTTON_MIDDLE)
2100                         {
2101                         pr_clicked_signal(pr, bevent);
2102                         }
2103                 }
2104
2105         pr->in_drag = FALSE;
2106
2107         return FALSE;
2108 }
2109
2110 static gboolean pr_mouse_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
2111 {
2112         PixbufRenderer *pr;
2113
2114         pr = PIXBUF_RENDERER(widget);
2115
2116         if (pr->scroller_id)
2117                 {
2118                 pr->scroller_xpos = pr->scroller_x;
2119                 pr->scroller_ypos = pr->scroller_y;
2120                 pr->scroller_xinc = 0;
2121                 pr->scroller_yinc = 0;
2122                 }
2123
2124         return FALSE;
2125 }
2126
2127 static void pr_mouse_drag_cb(GtkWidget *widget, GdkDragContext *context, gpointer data)
2128 {
2129         PixbufRenderer *pr;
2130
2131         pr = PIXBUF_RENDERER(widget);
2132
2133         pr->drag_moved = PR_DRAG_SCROLL_THRESHHOLD;
2134 }
2135
2136 static void pr_signals_connect(PixbufRenderer *pr)
2137 {
2138         g_signal_connect(G_OBJECT(pr), "motion_notify_event",
2139                          G_CALLBACK(pr_mouse_motion_cb), pr);
2140         g_signal_connect(G_OBJECT(pr), "button_press_event",
2141                          G_CALLBACK(pr_mouse_press_cb), pr);
2142         g_signal_connect(G_OBJECT(pr), "button_release_event",
2143                          G_CALLBACK(pr_mouse_release_cb), pr);
2144         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2145                          G_CALLBACK(pr_mouse_leave_cb), pr);
2146         g_signal_connect(G_OBJECT(pr), "leave_notify_event",
2147                          G_CALLBACK(pr_leave_notify_cb), pr);
2148
2149         gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
2150                                               GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
2151                                               GDK_LEAVE_NOTIFY_MASK);
2152
2153         g_signal_connect(G_OBJECT(pr), "drag_begin",
2154                          G_CALLBACK(pr_mouse_drag_cb), pr);
2155
2156 }
2157
2158 /*
2159  *-------------------------------------------------------------------
2160  * stereo support
2161  *-------------------------------------------------------------------
2162  */
2163
2164 #define COLOR_BYTES 3   /* rgb */
2165 static void pr_create_anaglyph_RC(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2166 {
2167         gint srs, drs;
2168         guchar *s_pix, *d_pix;
2169         guchar *sp, *dp;
2170         guchar *spi, *dpi;
2171         gint i, j;
2172
2173         srs = gdk_pixbuf_get_rowstride(right);
2174         s_pix = gdk_pixbuf_get_pixels(right);
2175         spi = s_pix + (x * COLOR_BYTES);
2176
2177         drs = gdk_pixbuf_get_rowstride(pixbuf);
2178         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2179         dpi =  d_pix + x * COLOR_BYTES;
2180
2181         for (i = y; i < y + h; i++)
2182                 {
2183                 sp = spi + (i * srs);
2184                 dp = dpi + (i * drs);
2185                 for (j = 0; j < w; j++)
2186                         {
2187                         *dp = *sp; /* copy red channel */
2188                         sp += COLOR_BYTES;
2189                         dp += COLOR_BYTES;
2190                         }
2191                 }
2192 }
2193
2194 static void pr_create_anaglyph_gray(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2195 {
2196         gint srs, drs;
2197         guchar *s_pix, *d_pix;
2198         guchar *sp, *dp;
2199         guchar *spi, *dpi;
2200         gint i, j;
2201         const double gc[3] = {0.299, 0.587, 0.114};
2202
2203         srs = gdk_pixbuf_get_rowstride(right);
2204         s_pix = gdk_pixbuf_get_pixels(right);
2205         spi = s_pix + (x * COLOR_BYTES);
2206
2207         drs = gdk_pixbuf_get_rowstride(pixbuf);
2208         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2209         dpi =  d_pix + x * COLOR_BYTES;
2210
2211         for (i = y; i < y + h; i++)
2212                 {
2213                 sp = spi + (i * srs);
2214                 dp = dpi + (i * drs);
2215                 for (j = 0; j < w; j++)
2216                         {
2217                         guchar g1 = dp[0] * gc[0] + dp[1] * gc[1] + dp[2] * gc[2];
2218                         guchar g2 = sp[0] * gc[0] + sp[1] * gc[1] + sp[2] * gc[2];
2219                         dp[0] = g2; /* red channel from sp */
2220                         dp[1] = g1; /* green and blue from dp */
2221                         dp[2] = g1;
2222                         sp += COLOR_BYTES;
2223                         dp += COLOR_BYTES;
2224                         }
2225                 }
2226 }
2227
2228 const double pr_dubois_matrix[3][6] = {
2229         { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
2230         {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
2231         {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}
2232         };
2233
2234 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2235 {
2236         gint srs, drs;
2237         guchar *s_pix, *d_pix;
2238         guchar *sp, *dp;
2239         guchar *spi, *dpi;
2240         gint i, j, k;
2241
2242         srs = gdk_pixbuf_get_rowstride(right);
2243         s_pix = gdk_pixbuf_get_pixels(right);
2244         spi = s_pix + (x * COLOR_BYTES);
2245
2246         drs = gdk_pixbuf_get_rowstride(pixbuf);
2247         d_pix = gdk_pixbuf_get_pixels(pixbuf);
2248         dpi =  d_pix + x * COLOR_BYTES;
2249
2250         for (i = y; i < y + h; i++)
2251                 {
2252                 sp = spi + (i * srs);
2253                 dp = dpi + (i * drs);
2254                 for (j = 0; j < w; j++)
2255                         {
2256                         double res[3];
2257                         for (k = 0; k < 3; k++)
2258                                 {
2259                                 const double *m = pr_dubois_matrix[k];
2260                                 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];
2261                                 if (res[k] < 0.0) res[k] = 0;
2262                                 if (res[k] > 255.0) res[k] = 255.0;
2263                                 }
2264                         dp[0] = res[0];
2265                         dp[1] = res[1];
2266                         dp[2] = res[2];
2267                         sp += COLOR_BYTES;
2268                         dp += COLOR_BYTES;
2269                         }
2270                 }
2271 }
2272
2273 void pr_create_anaglyph(guint mode, GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
2274 {
2275         if (mode & PR_STEREO_ANAGLYPH_RC)
2276                 pr_create_anaglyph_RC(pixbuf, right, x, y, w, h);
2277         else if (mode & PR_STEREO_ANAGLYPH_GRAY)
2278                 pr_create_anaglyph_gray(pixbuf, right, x, y, w, h);
2279         else if (mode & PR_STEREO_ANAGLYPH_DB)
2280                 pr_create_anaglyph_dubois(pixbuf, right, x, y, w, h);
2281 }
2282
2283 /*
2284  *-------------------------------------------------------------------
2285  * public
2286  *-------------------------------------------------------------------
2287  */
2288 static void pr_pixbuf_size_sync(PixbufRenderer *pr)
2289 {
2290         pr->stereo_pixbuf_offset_left = 0;
2291         pr->stereo_pixbuf_offset_right = 0;
2292         if (!pr->pixbuf) return;
2293         switch (pr->orientation)
2294                 {
2295                 case EXIF_ORIENTATION_LEFT_TOP:
2296                 case EXIF_ORIENTATION_RIGHT_TOP:
2297                 case EXIF_ORIENTATION_RIGHT_BOTTOM:
2298                 case EXIF_ORIENTATION_LEFT_BOTTOM:
2299                         pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
2300                         pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
2301                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2302                                 {
2303                                 pr->image_height /= 2;
2304                                 pr->stereo_pixbuf_offset_right = pr->image_height;
2305                                 }
2306                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2307                                 {
2308                                 pr->image_height /= 2;
2309                                 pr->stereo_pixbuf_offset_left = pr->image_height;
2310                                 }
2311
2312                         break;
2313                 default:
2314                         pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
2315                         pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
2316                         if (pr->stereo_data == STEREO_PIXBUF_SBS)
2317                                 {
2318                                 pr->image_width /= 2;
2319                                 pr->stereo_pixbuf_offset_right = pr->image_width;
2320                                 }
2321                         else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
2322                                 {
2323                                 pr->image_width /= 2;
2324                                 pr->stereo_pixbuf_offset_left = pr->image_width;
2325                                 }
2326                 }
2327 }
2328
2329 static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, PrZoomFlags flags)
2330 {
2331         if (pixbuf) g_object_ref(pixbuf);
2332         if (pr->pixbuf) g_object_unref(pr->pixbuf);
2333         pr->pixbuf = pixbuf;
2334
2335         if (!pr->pixbuf)
2336                 {
2337                 GtkWidget *box;
2338
2339                 /* no pixbuf so just clear the window */
2340                 pr->image_width = 0;
2341                 pr->image_height = 0;
2342                 pr->scale = 1.0;
2343                 pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
2344                                     and used for pixbuf_renderer_zoom_get */
2345
2346                 box = GTK_WIDGET(pr);
2347
2348                 pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2349                 if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2350
2351                 pr_update_signal(pr);
2352
2353                 return;
2354                 }
2355
2356         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2357                 {
2358                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2359                 pr_stereo_temp_disable(pr, disable);
2360                 }
2361
2362         pr_pixbuf_size_sync(pr);
2363         pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
2364         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
2365         pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2366 }
2367
2368 void pixbuf_renderer_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom)
2369 {
2370         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2371
2372         pr_source_tile_unset(pr);
2373
2374         pr_set_pixbuf(pr, pixbuf, zoom, 0);
2375
2376         pr_update_signal(pr);
2377 }
2378
2379 void pixbuf_renderer_set_pixbuf_lazy(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, gint orientation, StereoPixbufData stereo_data)
2380 {
2381         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2382
2383         pr_source_tile_unset(pr);
2384
2385         pr->orientation = orientation;
2386         pr->stereo_data = stereo_data;
2387         pr_set_pixbuf(pr, pixbuf, zoom, PR_ZOOM_LAZY);
2388
2389         pr_update_signal(pr);
2390 }
2391
2392 GdkPixbuf *pixbuf_renderer_get_pixbuf(PixbufRenderer *pr)
2393 {
2394         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), NULL);
2395
2396         return pr->pixbuf;
2397 }
2398
2399 void pixbuf_renderer_set_orientation(PixbufRenderer *pr, gint orientation)
2400 {
2401         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2402
2403         pr->orientation = orientation;
2404
2405         pr_pixbuf_size_sync(pr);
2406         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2407 }
2408
2409 gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
2410 {
2411         if (!pr) return 1;
2412         return pr->orientation;
2413 }
2414
2415 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
2416 {
2417         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2418         if (pr->stereo_data == stereo_data) return;
2419
2420
2421         pr->stereo_data = stereo_data;
2422
2423         if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
2424                 {
2425                 gint disable = !pr->pixbuf || ! pr->stereo_data;
2426                 pr_stereo_temp_disable(pr, disable);
2427                 }
2428         pr_pixbuf_size_sync(pr);
2429         pr->renderer->update_pixbuf(pr->renderer, FALSE);
2430         if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
2431         pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
2432 }
2433
2434 void pixbuf_renderer_set_post_process_func(PixbufRenderer *pr, PixbufRendererPostProcessFunc func, gpointer user_data, gboolean slow)
2435 {
2436         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2437
2438         pr->func_post_process = func;
2439         pr->post_process_user_data = user_data;
2440         pr->post_process_slow = func && slow;
2441
2442 }
2443
2444
2445 void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
2446 {
2447         GObject *object;
2448         PixbufRendererScrollResetType scroll_reset;
2449
2450         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2451         g_return_if_fail(IS_PIXBUF_RENDERER(source));
2452
2453         if (pr == source) return;
2454
2455         object = G_OBJECT(pr);
2456
2457         g_object_set(object, "zoom_min", source->zoom_min, NULL);
2458         g_object_set(object, "zoom_max", source->zoom_max, NULL);
2459         g_object_set(object, "loading", source->loading, NULL);
2460
2461         pr->complete = source->complete;
2462
2463         pr->x_scroll = source->x_scroll;
2464         pr->y_scroll = source->y_scroll;
2465         pr->x_mouse  = source->x_mouse;
2466         pr->y_mouse  = source->y_mouse;
2467
2468         scroll_reset = pr->scroll_reset;
2469         pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
2470
2471         pr->func_post_process = source->func_post_process;
2472         pr->post_process_user_data = source->post_process_user_data;
2473         pr->post_process_slow = source->post_process_slow;
2474         pr->orientation = source->orientation;
2475         pr->stereo_data = source->stereo_data;
2476
2477         if (source->source_tiles_enabled)
2478                 {
2479                 pr_source_tile_unset(pr);
2480
2481                 pr->source_tiles_enabled = source->source_tiles_enabled;
2482                 pr->source_tiles_cache_size = source->source_tiles_cache_size;
2483                 pr->source_tile_width = source->source_tile_width;
2484                 pr->source_tile_height = source->source_tile_height;
2485                 pr->image_width = source->image_width;
2486                 pr->image_height = source->image_height;
2487
2488                 pr->func_tile_request = source->func_tile_request;
2489                 pr->func_tile_dispose = source->func_tile_dispose;
2490                 pr->func_tile_data = source->func_tile_data;
2491
2492                 pr->source_tiles = source->source_tiles;
2493                 source->source_tiles = NULL;
2494
2495                 pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2496                 }
2497         else
2498                 {
2499                 pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
2500                 }
2501
2502         pr->scroll_reset = scroll_reset;
2503
2504         pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
2505 //      pr_queue_clear(source);
2506 //      pr_tile_free_all(source);
2507 }
2508
2509 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
2510 {
2511         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2512
2513         if (pr->source_tiles_enabled)
2514                 {
2515                 pr_source_tile_changed(pr, x, y, w, h);
2516                 }
2517
2518         pr->renderer->area_changed(pr->renderer, x, y, w, h);
2519         if (pr->renderer2) pr->renderer2->area_changed(pr->renderer2, x, y, w, h);
2520 }
2521
2522 void pixbuf_renderer_zoom_adjust(PixbufRenderer *pr, gdouble increment)
2523 {
2524         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2525
2526         pr_zoom_adjust_real(pr, increment, PR_ZOOM_NONE, 0, 0);
2527 }
2528
2529 void pixbuf_renderer_zoom_adjust_at_point(PixbufRenderer *pr, gdouble increment, gint x, gint y)
2530 {
2531         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2532
2533         pr_zoom_adjust_real(pr, increment, PR_ZOOM_CENTER, x, y);
2534 }
2535
2536 void pixbuf_renderer_zoom_set(PixbufRenderer *pr, gdouble zoom)
2537 {
2538         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2539
2540         pr_zoom_sync(pr, zoom, PR_ZOOM_NONE, 0, 0);
2541 }
2542
2543 gdouble pixbuf_renderer_zoom_get(PixbufRenderer *pr)
2544 {
2545         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2546
2547         return pr->zoom;
2548 }
2549
2550 gdouble pixbuf_renderer_zoom_get_scale(PixbufRenderer *pr)
2551 {
2552         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), 1.0);
2553
2554         return pr->scale;
2555 }
2556
2557 void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble max)
2558 {
2559         g_return_if_fail(IS_PIXBUF_RENDERER(pr));
2560
2561         if (min > 1.0 || max < 1.0) return;
2562         if (min < 1.0 && min > -1.0) return;
2563         if (min < -200.0 || max > 200.0) return;
2564
2565         if (pr->zoom_min != min)
2566                 {
2567                 pr->zoom_min = min;
2568                 g_object_notify(G_OBJECT(pr), "zoom_min");
2569                 }
2570         if (pr->zoom_max != max)
2571                 {
2572                 pr->zoom_max = max;
2573                 g_object_notify(G_OBJECT(pr), "zoom_max");
2574                 }
2575 }
2576
2577 static void pr_stereo_set(PixbufRenderer *pr)
2578 {
2579         if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2580
2581         pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
2582
2583         if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
2584                 {
2585                 if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
2586                 pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
2587                 }
2588         else
2589                 {
2590                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2591                 pr->renderer2 = NULL;
2592                 }
2593         if (pr->stereo_mode & PR_STEREO_HALF)
2594                 {
2595                 if (pr->stereo_mode & PR_STEREO_HORIZ) pr->aspect_ratio = 2.0;
2596                 else if (pr->stereo_mode & PR_STEREO_VERT) pr->aspect_ratio = 0.5;
2597                 else pr->aspect_ratio = 1.0;
2598                 }
2599         else
2600                 {
2601                 pr->aspect_ratio = 1.0;
2602                 }
2603 }
2604
2605 void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
2606 {
2607         gboolean redraw = !(pr->stereo_mode == stereo_mode) || pr->stereo_temp_disable;
2608         pr->stereo_mode = stereo_mode;
2609         if ((stereo_mode & PR_STEREO_TEMP_DISABLE) && pr->stereo_temp_disable) return;
2610
2611         pr->stereo_temp_disable = FALSE;
2612
2613         pr_stereo_set(pr);
2614
2615         if (redraw)
2616                 {
2617                 pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2618                 pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
2619                 }
2620 }
2621
2622 void pixbuf_renderer_stereo_fixed_set(PixbufRenderer *pr, gint width, gint height, gint x1, gint y1, gint x2, gint y2)
2623 {
2624         pr->stereo_fixed_width = width;
2625         pr->stereo_fixed_height = height;
2626         pr->stereo_fixed_x_left = x1;
2627         pr->stereo_fixed_y_left = y1;
2628         pr->stereo_fixed_x_right = x2;
2629         pr->stereo_fixed_y_right = y2;
2630 }
2631
2632 gint pixbuf_renderer_stereo_get(PixbufRenderer *pr)
2633 {
2634         return pr->stereo_mode;
2635 }
2636
2637 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
2638 {
2639         if (pr->stereo_temp_disable == disable) return;
2640         pr->stereo_temp_disable = disable;
2641         if (disable)
2642                 {
2643                 if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
2644                 pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
2645                 if (pr->renderer2) pr->renderer2->free(pr->renderer2);
2646                 pr->renderer2 = NULL;
2647                 pr->aspect_ratio = 1.0;
2648                 }
2649         else
2650                 {
2651                 pr_stereo_set(pr);
2652                 }
2653         pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
2654 }
2655
2656 gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
2657                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
2658 {
2659         GdkPixbuf *pb = pr->pixbuf;
2660         gint p_alpha, prs;
2661         guchar *p_pix, *pp;
2662         gint map_x, map_y, map_w, map_h;
2663
2664         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2665         g_return_val_if_fail(r_mouse != NULL && g_mouse != NULL && b_mouse != NULL, FALSE);
2666
2667         if (!pr->pixbuf && !pr->source_tiles_enabled)
2668                 {
2669                 *r_mouse = -1;
2670                 *g_mouse = -1;
2671                 *b_mouse = -1;
2672                 return FALSE;
2673                 }
2674
2675         if (!pb) return FALSE;
2676
2677         pr_tile_region_map_orientation(pr->orientation,
2678                                         x_pixel, y_pixel,
2679                                         pr->image_width, pr->image_height,
2680                                         1, 1, /*single pixel */
2681                                         &map_x, &map_y,
2682                                         &map_w, &map_h);
2683
2684         if (map_x < 0 || map_x > gdk_pixbuf_get_width(pr->pixbuf) - 1) return  FALSE;
2685         if (map_y < 0 || map_y > gdk_pixbuf_get_height(pr->pixbuf) - 1) return  FALSE;
2686
2687         p_alpha = gdk_pixbuf_get_has_alpha(pb);
2688         prs = gdk_pixbuf_get_rowstride(pb);
2689         p_pix = gdk_pixbuf_get_pixels(pb);
2690
2691         pp = p_pix + map_y * prs + (map_x * (p_alpha ? 4 : 3));
2692         *r_mouse = *pp;
2693         pp++;
2694         *g_mouse = *pp;
2695         pp++;
2696         *b_mouse = *pp;
2697
2698         return TRUE;
2699 }
2700
2701 gboolean pixbuf_renderer_get_mouse_position(PixbufRenderer *pr, gint *x_pixel_return, gint *y_pixel_return)
2702 {
2703         gint x_pixel, y_pixel, x_pixel_clamped, y_pixel_clamped;
2704
2705         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2706         g_return_val_if_fail(x_pixel_return != NULL && y_pixel_return != NULL, FALSE);
2707
2708         if (!pr->pixbuf && !pr->source_tiles_enabled)
2709                 {
2710                 *x_pixel_return = -1;
2711                 *y_pixel_return = -1;
2712                 return FALSE;
2713                 }
2714
2715         x_pixel = floor((gdouble)(pr->x_mouse - pr->x_offset + pr->x_scroll) / pr->scale);
2716         y_pixel = floor((gdouble)(pr->y_mouse - pr->y_offset + pr->y_scroll) / pr->scale / pr->aspect_ratio);
2717         x_pixel_clamped = CLAMP(x_pixel, 0, pr->image_width - 1);
2718         y_pixel_clamped = CLAMP(y_pixel, 0, pr->image_height - 1);
2719
2720         if(x_pixel != x_pixel_clamped || y_pixel != y_pixel_clamped)
2721                 {
2722                 /* mouse is not on pr */
2723                 x_pixel = y_pixel = -1;
2724                 }
2725
2726         *x_pixel_return = x_pixel;
2727         *y_pixel_return = y_pixel;
2728
2729         return TRUE;
2730 }
2731
2732 gboolean pixbuf_renderer_get_image_size(PixbufRenderer *pr, gint *width, gint *height)
2733 {
2734         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2735         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2736
2737         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2738                 {
2739                 *width = 0;
2740                 *height = 0;
2741                 return FALSE;
2742                 }
2743
2744         *width = pr->image_width;
2745         *height = pr->image_height;
2746         return TRUE;
2747 }
2748
2749 gboolean pixbuf_renderer_get_scaled_size(PixbufRenderer *pr, gint *width, gint *height)
2750 {
2751         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2752         g_return_val_if_fail(width != NULL && height != NULL, FALSE);
2753
2754         if (!pr->pixbuf && !pr->source_tiles_enabled && (!pr->image_width || !pr->image_height))
2755                 {
2756                 *width = 0;
2757                 *height = 0;
2758                 return FALSE;
2759                 }
2760
2761         *width = pr->width;
2762         *height = pr->height;
2763         return TRUE;
2764 }
2765
2766 gboolean pixbuf_renderer_get_visible_rect(PixbufRenderer *pr, GdkRectangle *rect)
2767 {
2768         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2769         g_return_val_if_fail(rect != NULL, FALSE);
2770
2771         if ((!pr->pixbuf && !pr->source_tiles_enabled) ||
2772             !pr->scale)
2773                 {
2774                 rect->x = 0;
2775                 rect->y = 0;
2776                 rect->width = 0;
2777                 rect->height = 0;
2778                 return FALSE;
2779                 }
2780
2781         rect->x = (gint)((gdouble)pr->x_scroll / pr->scale);
2782         rect->y = (gint)((gdouble)pr->y_scroll / pr->scale / pr->aspect_ratio);
2783         rect->width = (gint)((gdouble)pr->vis_width / pr->scale);
2784         rect->height = (gint)((gdouble)pr->vis_height / pr->scale / pr->aspect_ratio);
2785         return TRUE;
2786 }
2787
2788 gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect)
2789 {
2790         g_return_val_if_fail(IS_PIXBUF_RENDERER(pr), FALSE);
2791         g_return_val_if_fail(rect != NULL, FALSE);
2792
2793         if ((!pr->pixbuf && !pr->source_tiles_enabled))
2794                 {
2795                 rect->x = 0;
2796                 rect->y = 0;
2797                 rect->width = 0;
2798                 rect->height = 0;
2799                 return FALSE;
2800                 }
2801
2802         rect->x = pr->x_scroll;
2803         rect->y = pr->y_scroll;
2804         rect->width = pr->vis_width;
2805         rect->height = pr->vis_height;
2806         return TRUE;
2807 }
2808
2809 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
2810 {
2811 #if 0
2812         /* FIXME: this function does not consider the image orientation,
2813         so it probably only breaks something */
2814         gdouble zoom;
2815         gint w, h;
2816
2817         zoom = pixbuf_renderer_zoom_get(pr);
2818         pr->image_width = width;
2819         pr->image_height = height;
2820
2821         pr_zoom_clamp(pr, zoom, PR_ZOOM_FORCE, NULL);
2822
2823         //w = width;
2824         //h = height;
2825
2826         //pr->width = width;
2827         //pr->height = height;
2828 #endif
2829 }
2830
2831 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */