src/pixbuf-renderer.c

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