Pileus Git - ~andy/gtk/blob - gdk-pixbuf/gdk-pixbuf-animation.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
   2 /* GdkPixbuf library - Simple animation support
   3  *
   4  * Copyright (C) 1999 The Free Software Foundation
   5  *
   6  * Authors: Jonathan Blandford <jrb@redhat.com>
   7  *          Havoc Pennington <hp@redhat.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include "config.h"
  26 #include <errno.h>
  27 #include "gdk-pixbuf-private.h"
  28 #include "gdk-pixbuf-io.h"
  29 #include "gdk-pixbuf-i18n.h"
  30 #include "gdk-pixbuf-animation.h"
  31 #include "gdk-pixbuf-alias.h"
  32
  33 #include <glib/gstdio.h>
  34
  35 typedef struct _GdkPixbufNonAnim GdkPixbufNonAnim;
  36 typedef struct _GdkPixbufNonAnimClass GdkPixbufNonAnimClass;
  37
  38 #define GDK_TYPE_PIXBUF_NON_ANIM              (gdk_pixbuf_non_anim_get_type ())
  39 #define GDK_PIXBUF_NON_ANIM(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnim))
  40 #define GDK_IS_PIXBUF_NON_ANIM(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_NON_ANIM))
  41
  42 #define GDK_PIXBUF_NON_ANIM_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnimClass))
  43 #define GDK_IS_PIXBUF_NON_ANIM_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_NON_ANIM))
  44 #define GDK_PIXBUF_NON_ANIM_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_NON_ANIM, GdkPixbufNonAnimClass))
  45
  46 /* Private part of the GdkPixbufNonAnim structure */
  47 struct _GdkPixbufNonAnim {
  48         GdkPixbufAnimation parent_instance;
  49
  50         GdkPixbuf *pixbuf;
  51 };
  52
  53 struct _GdkPixbufNonAnimClass {
  54         GdkPixbufAnimationClass parent_class;
  55
  56 };
  57
  58
  59 typedef struct _GdkPixbufNonAnimIter GdkPixbufNonAnimIter;
  60 typedef struct _GdkPixbufNonAnimIterClass GdkPixbufNonAnimIterClass;
  61
  62
  63 #define GDK_TYPE_PIXBUF_NON_ANIM_ITER              (gdk_pixbuf_non_anim_iter_get_type ())
  64 #define GDK_PIXBUF_NON_ANIM_ITER(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIter))
  65 #define GDK_IS_PIXBUF_NON_ANIM_ITER(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_PIXBUF_NON_ANIM_ITER))
  66
  67 #define GDK_PIXBUF_NON_ANIM_ITER_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIterClass))
  68 #define GDK_IS_PIXBUF_NON_ANIM_ITER_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_PIXBUF_NON_ANIM_ITER))
  69 #define GDK_PIXBUF_NON_ANIM_ITER_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_PIXBUF_NON_ANIM_ITER, GdkPixbufNonAnimIterClass))
  70
  71 struct _GdkPixbufNonAnimIter {
  72         GdkPixbufAnimationIter parent_instance;
  73
  74         GdkPixbufNonAnim   *non_anim;
  75 };
  76
  77 struct _GdkPixbufNonAnimIterClass {
  78         GdkPixbufAnimationIterClass parent_class;
  79
  80 };
  81
  82 static GType gdk_pixbuf_non_anim_iter_get_type (void) G_GNUC_CONST;
  83
  84 G_DEFINE_TYPE (GdkPixbufAnimation, gdk_pixbuf_animation, G_TYPE_OBJECT);
  85
  86 static void
  87 gdk_pixbuf_animation_class_init (GdkPixbufAnimationClass *klass)
  88 {
  89 }
  90
  91 static void
  92 gdk_pixbuf_animation_init (GdkPixbufAnimation *animation)
  93 {
  94 }
  95
  96 /**
  97  * gdk_pixbuf_animation_new_from_file:
  98  * @filename: Name of file to load, in the GLib file name encoding
  99  * @error: return location for error
 100  *
 101  * Creates a new animation by loading it from a file.  The file format is
 102  * detected automatically.  If the file's format does not support multi-frame
 103  * images, then an animation with a single frame will be created. Possible errors
 104  * are in the #GDK_PIXBUF_ERROR and #G_FILE_ERROR domains.
 105  *
 106  * Return value: A newly-created animation with a reference count of 1, or %NULL
 107  * if any of several error conditions ocurred:  the file could not be opened,
 108  * there was no loader for the file's format, there was not enough memory to
 109  * allocate the image buffer, or the image file contained invalid data.
 110  **/
 111 GdkPixbufAnimation *
 112 gdk_pixbuf_animation_new_from_file (const char *filename,
 113                                     GError    **error)
 114 {
 115         GdkPixbufAnimation *animation;
 116         int size;
 117         FILE *f;
 118         guchar buffer [1024];
 119         GdkPixbufModule *image_module;
 120         gchar *display_name;
 121         gboolean locked = FALSE;
 122
 123         g_return_val_if_fail (filename != NULL, NULL);
 124         g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 125
 126         display_name = g_filename_display_name (filename);
 127         f = g_fopen (filename, "rb");
 128         if (!f) {
 129                 gint save_errno = errno;
 130                 g_set_error (error,
 131                              G_FILE_ERROR,
 132                              g_file_error_from_errno (save_errno),
 133                              _("Failed to open file '%s': %s"),
 134                              display_name,
 135                              g_strerror (save_errno));
 136                 g_free (display_name);
 137                 return NULL;
 138         }
 139
 140         size = fread (&buffer, 1, sizeof (buffer), f);
 141
 142         if (size == 0) {
 143                 g_set_error (error,
 144                              GDK_PIXBUF_ERROR,
 145                              GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
 146                              _("Image file '%s' contains no data"),
 147                              display_name);
 148                 g_free (display_name);
 149                 fclose (f);
 150                 return NULL;
 151         }
 152
 153         image_module = _gdk_pixbuf_get_module (buffer, size, filename, error);
 154         if (!image_module) {
 155                 g_free (display_name);
 156                 fclose (f);
 157                 return NULL;
 158         }
 159
 160         if (image_module->module == NULL)
 161                 if (!_gdk_pixbuf_load_module (image_module, error)) {
 162                         g_free (display_name);
 163                         fclose (f);
 164                         return NULL;
 165                 }
 166
 167         if (image_module->load_animation == NULL) {
 168                 GdkPixbuf *pixbuf;
 169
 170                 /* Keep this logic in sync with gdk_pixbuf_new_from_file() */
 171
 172                 fseek (f, 0, SEEK_SET);
 173                 pixbuf = _gdk_pixbuf_generic_image_load (image_module, f, error);
 174                 fclose (f);
 175
 176                 if (pixbuf == NULL && error != NULL && *error == NULL) {
 177                         /* I don't trust these crufty longjmp()'ing image libs
 178                          * to maintain proper error invariants, and I don't
 179                          * want user code to segfault as a result. We need to maintain
 180                          * the invariant that error gets set if NULL is returned.
 181                          */
 182
 183                         g_warning ("Bug! gdk-pixbuf loader '%s' didn't set an error on failure.",
 184                                    image_module->module_name);
 185                         g_set_error (error,
 186                                      GDK_PIXBUF_ERROR,
 187                                      GDK_PIXBUF_ERROR_FAILED,
 188                                      _("Failed to load image '%s': reason not known, probably a corrupt image file"),
 189                                      display_name);
 190                 }
 191
 192                 if (pixbuf == NULL) {
 193                         g_free (display_name);
 194                         animation = NULL;
 195                         goto out_unlock;
 196                 }
 197
 198                 animation = gdk_pixbuf_non_anim_new (pixbuf);
 199
 200                 g_object_unref (pixbuf);
 201         } else {
 202                 locked = _gdk_pixbuf_lock (image_module);
 203
 204                 fseek (f, 0, SEEK_SET);
 205                 animation = (* image_module->load_animation) (f, error);
 206
 207                 if (animation == NULL && error != NULL && *error == NULL) {
 208                         /* I don't trust these crufty longjmp()'ing
 209                          * image libs to maintain proper error
 210                          * invariants, and I don't want user code to
 211                          * segfault as a result. We need to maintain
 212                          * the invariant that error gets set if NULL
 213                          * is returned.
 214                          */
 215
 216                         g_warning ("Bug! gdk-pixbuf loader '%s' didn't set an error on failure.",
 217                                    image_module->module_name);
 218                         g_set_error (error,
 219                                      GDK_PIXBUF_ERROR,
 220                                      GDK_PIXBUF_ERROR_FAILED,
 221                                      _("Failed to load animation '%s': reason not known, probably a corrupt animation file"),
 222                                      display_name);
 223                 }
 224
 225                 fclose (f);
 226         }
 227
 228         g_free (display_name);
 229
 230  out_unlock:
 231         if (locked)
 232                 _gdk_pixbuf_unlock (image_module);
 233         return animation;
 234 }
 235
 236 #ifdef G_OS_WIN32
 237
 238 #undef gdk_pixbuf_animation_new_from_file
 239
 240 GdkPixbufAnimation *
 241 gdk_pixbuf_animation_new_from_file (const char *filename,
 242                                     GError    **error)
 243 {
 244         gchar *utf8_filename =
 245                 g_locale_to_utf8 (filename, -1, NULL, NULL, error);
 246         GdkPixbufAnimation *retval;
 247
 248         if (utf8_filename == NULL)
 249                 return NULL;
 250
 251         retval = gdk_pixbuf_animation_new_from_file_utf8 (utf8_filename, error);
 252
 253         g_free (utf8_filename);
 254
 255         return retval;
 256 }
 257
 258 #endif
 259
 260 /**
 261  * gdk_pixbuf_animation_ref:
 262  * @animation: An animation.
 263  *
 264  * Adds a reference to an animation.
 265  *
 266  * Return value: The same as the @animation argument.
 267  *
 268  * Deprecated: Use g_object_ref().
 269  **/
 270 GdkPixbufAnimation *
 271 gdk_pixbuf_animation_ref (GdkPixbufAnimation *animation)
 272 {
 273         return (GdkPixbufAnimation*) g_object_ref (animation);
 274 }
 275
 276 /**
 277  * gdk_pixbuf_animation_unref:
 278  * @animation: An animation.
 279  *
 280  * Removes a reference from an animation.
 281  *
 282  * Deprecated: Use g_object_unref().
 283  **/
 284 void
 285 gdk_pixbuf_animation_unref (GdkPixbufAnimation *animation)
 286 {
 287         g_object_unref (animation);
 288 }
 289
 290 /**
 291  * gdk_pixbuf_animation_is_static_image:
 292  * @animation: a #GdkPixbufAnimation
 293  *
 294  * If you load a file with gdk_pixbuf_animation_new_from_file() and it turns
 295  * out to be a plain, unanimated image, then this function will return
 296  * %TRUE. Use gdk_pixbuf_animation_get_static_image() to retrieve
 297  * the image.
 298  *
 299  * Return value: %TRUE if the "animation" was really just an image
 300  **/
 301 gboolean
 302 gdk_pixbuf_animation_is_static_image (GdkPixbufAnimation *animation)
 303 {
 304         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), FALSE);
 305
 306         return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->is_static_image (animation);
 307 }
 308
 309 /**
 310  * gdk_pixbuf_animation_get_static_image:
 311  * @animation: a #GdkPixbufAnimation
 312  *
 313  * If an animation is really just a plain image (has only one frame),
 314  * this function returns that image. If the animation is an animation,
 315  * this function returns a reasonable thing to display as a static
 316  * unanimated image, which might be the first frame, or something more
 317  * sophisticated. If an animation hasn't loaded any frames yet, this
 318  * function will return %NULL.
 319  *
 320  * Return value: unanimated image representing the animation
 321  **/
 322 GdkPixbuf*
 323 gdk_pixbuf_animation_get_static_image (GdkPixbufAnimation *animation)
 324 {
 325         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), NULL);
 326
 327         return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_static_image (animation);
 328 }
 329
 330 /**
 331  * gdk_pixbuf_animation_get_width:
 332  * @animation: An animation.
 333  *
 334  * Queries the width of the bounding box of a pixbuf animation.
 335  *
 336  * Return value: Width of the bounding box of the animation.
 337  **/
 338 int
 339 gdk_pixbuf_animation_get_width (GdkPixbufAnimation *animation)
 340 {
 341         int width;
 342
 343         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), 0);
 344
 345         width = 0;
 346         GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_size (animation,
 347                                                               &width, NULL);
 348
 349
 350         return width;
 351 }
 352
 353 /**
 354  * gdk_pixbuf_animation_get_height:
 355  * @animation: An animation.
 356  *
 357  * Queries the height of the bounding box of a pixbuf animation.
 358  *
 359  * Return value: Height of the bounding box of the animation.
 360  **/
 361 int
 362 gdk_pixbuf_animation_get_height (GdkPixbufAnimation *animation)
 363 {
 364         int height;
 365
 366         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), 0);
 367
 368         height = 0;
 369         GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_size (animation,
 370                                                               NULL, &height);
 371
 372
 373         return height;
 374 }
 375
 376
 377 /**
 378  * gdk_pixbuf_animation_get_iter:
 379  * @animation: a #GdkPixbufAnimation
 380  * @start_time: time when the animation starts playing
 381  *
 382  * Get an iterator for displaying an animation. The iterator provides
 383  * the frames that should be displayed at a given time.
 384  * It should be freed after use with g_object_unref().
 385  *
 386  * @start_time would normally come from g_get_current_time(), and
 387  * marks the beginning of animation playback. After creating an
 388  * iterator, you should immediately display the pixbuf returned by
 389  * gdk_pixbuf_animation_iter_get_pixbuf(). Then, you should install a
 390  * timeout (with g_timeout_add()) or by some other mechanism ensure
 391  * that you'll update the image after
 392  * gdk_pixbuf_animation_iter_get_delay_time() milliseconds. Each time
 393  * the image is updated, you should reinstall the timeout with the new,
 394  * possibly-changed delay time.
 395  *
 396  * As a shortcut, if @start_time is %NULL, the result of
 397  * g_get_current_time() will be used automatically.
 398  *
 399  * To update the image (i.e. possibly change the result of
 400  * gdk_pixbuf_animation_iter_get_pixbuf() to a new frame of the animation),
 401  * call gdk_pixbuf_animation_iter_advance().
 402  *
 403  * If you're using #GdkPixbufLoader, in addition to updating the image
 404  * after the delay time, you should also update it whenever you
 405  * receive the area_updated signal and
 406  * gdk_pixbuf_animation_iter_on_currently_loading_frame() returns
 407  * %TRUE. In this case, the frame currently being fed into the loader
 408  * has received new data, so needs to be refreshed. The delay time for
 409  * a frame may also be modified after an area_updated signal, for
 410  * example if the delay time for a frame is encoded in the data after
 411  * the frame itself. So your timeout should be reinstalled after any
 412  * area_updated signal.
 413  *
 414  * A delay time of -1 is possible, indicating "infinite."
 415  *
 416  * Return value: an iterator to move over the animation
 417  **/
 418 GdkPixbufAnimationIter*
 419 gdk_pixbuf_animation_get_iter (GdkPixbufAnimation *animation,
 420                                const GTimeVal     *start_time)
 421 {
 422         GTimeVal val;
 423
 424         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION (animation), NULL);
 425
 426
 427         if (start_time)
 428                 val = *start_time;
 429         else
 430                 g_get_current_time (&val);
 431
 432         return GDK_PIXBUF_ANIMATION_GET_CLASS (animation)->get_iter (animation, &val);
 433 }
 434
 435 G_DEFINE_TYPE (GdkPixbufAnimationIter, gdk_pixbuf_animation_iter, G_TYPE_OBJECT);
 436
 437 static void
 438 gdk_pixbuf_animation_iter_class_init (GdkPixbufAnimationIterClass *klass)
 439 {
 440 }
 441
 442 static void
 443 gdk_pixbuf_animation_iter_init (GdkPixbufAnimationIter *iter)
 444 {
 445 }
 446
 447 /**
 448  * gdk_pixbuf_animation_iter_get_delay_time:
 449  * @iter: an animation iterator
 450  *
 451  * Gets the number of milliseconds the current pixbuf should be displayed,
 452  * or -1 if the current pixbuf should be displayed forever. g_timeout_add()
 453  * conveniently takes a timeout in milliseconds, so you can use a timeout
 454  * to schedule the next update.
 455  *
 456  * Return value: delay time in milliseconds (thousandths of a second)
 457  **/
 458 int
 459 gdk_pixbuf_animation_iter_get_delay_time (GdkPixbufAnimationIter *iter)
 460 {
 461         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), -1);
 462
 463         return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->get_delay_time (iter);
 464 }
 465
 466 /**
 467  * gdk_pixbuf_animation_iter_get_pixbuf:
 468  * @iter: an animation iterator
 469  *
 470  * Gets the current pixbuf which should be displayed; the pixbuf will
 471  * be the same size as the animation itself
 472  * (gdk_pixbuf_animation_get_width(), gdk_pixbuf_animation_get_height()).
 473  * This pixbuf should be displayed for
 474  * gdk_pixbuf_animation_iter_get_delay_time() milliseconds.  The caller
 475  * of this function does not own a reference to the returned pixbuf;
 476  * the returned pixbuf will become invalid when the iterator advances
 477  * to the next frame, which may happen anytime you call
 478  * gdk_pixbuf_animation_iter_advance(). Copy the pixbuf to keep it
 479  * (don't just add a reference), as it may get recycled as you advance
 480  * the iterator.
 481  *
 482  * Return value: the pixbuf to be displayed
 483  **/
 484 GdkPixbuf*
 485 gdk_pixbuf_animation_iter_get_pixbuf (GdkPixbufAnimationIter *iter)
 486 {
 487         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), NULL);
 488
 489         return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->get_pixbuf (iter);
 490 }
 491
 492 /**
 493  * gdk_pixbuf_animation_iter_on_currently_loading_frame:
 494  * @iter: a #GdkPixbufAnimationIter
 495  *
 496  * Used to determine how to respond to the area_updated signal on
 497  * #GdkPixbufLoader when loading an animation. area_updated is emitted
 498  * for an area of the frame currently streaming in to the loader. So if
 499  * you're on the currently loading frame, you need to redraw the screen for
 500  * the updated area.
 501  *
 502  * Return value: %TRUE if the frame we're on is partially loaded, or the last frame
 503  **/
 504 gboolean
 505 gdk_pixbuf_animation_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter)
 506 {
 507         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), FALSE);
 508
 509         return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->on_currently_loading_frame (iter);
 510 }
 511
 512 /**
 513  * gdk_pixbuf_animation_iter_advance:
 514  * @iter: a #GdkPixbufAnimationIter
 515  * @current_time: current time
 516  *
 517  * Possibly advances an animation to a new frame. Chooses the frame based
 518  * on the start time passed to gdk_pixbuf_animation_get_iter().
 519  *
 520  * @current_time would normally come from g_get_current_time(), and
 521  * must be greater than or equal to the time passed to
 522  * gdk_pixbuf_animation_get_iter(), and must increase or remain
 523  * unchanged each time gdk_pixbuf_animation_iter_get_pixbuf() is
 524  * called. That is, you can't go backward in time; animations only
 525  * play forward.
 526  *
 527  * As a shortcut, pass %NULL for the current time and g_get_current_time()
 528  * will be invoked on your behalf. So you only need to explicitly pass
 529  * @current_time if you're doing something odd like playing the animation
 530  * at double speed.
 531  *
 532  * If this function returns %FALSE, there's no need to update the animation
 533  * display, assuming the display had been rendered prior to advancing;
 534  * if %TRUE, you need to call gdk_animation_iter_get_pixbuf() and update the
 535  * display with the new pixbuf.
 536  *
 537  * Returns: %TRUE if the image may need updating
 538  *
 539  **/
 540 gboolean
 541 gdk_pixbuf_animation_iter_advance (GdkPixbufAnimationIter *iter,
 542                                    const GTimeVal         *current_time)
 543 {
 544         GTimeVal val;
 545
 546         g_return_val_if_fail (GDK_IS_PIXBUF_ANIMATION_ITER (iter), FALSE);
 547
 548         if (current_time)
 549                 val = *current_time;
 550         else
 551                 g_get_current_time (&val);
 552
 553         return GDK_PIXBUF_ANIMATION_ITER_GET_CLASS (iter)->advance (iter, &val);
 554 }
 555
 556 static void                    gdk_pixbuf_non_anim_finalize         (GObject            *object);
 557 static gboolean                gdk_pixbuf_non_anim_is_static_image  (GdkPixbufAnimation *animation);
 558 static GdkPixbuf*              gdk_pixbuf_non_anim_get_static_image (GdkPixbufAnimation *animation);
 559 static void                    gdk_pixbuf_non_anim_get_size         (GdkPixbufAnimation *anim,
 560                                                                      int                *width,
 561                                                                      int                *height);
 562 static GdkPixbufAnimationIter* gdk_pixbuf_non_anim_get_iter         (GdkPixbufAnimation *anim,
 563                                                                      const GTimeVal     *start_time);
 564
 565 G_DEFINE_TYPE (GdkPixbufNonAnim, gdk_pixbuf_non_anim, GDK_TYPE_PIXBUF_ANIMATION);
 566
 567 static void
 568 gdk_pixbuf_non_anim_class_init (GdkPixbufNonAnimClass *klass)
 569 {
 570         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 571         GdkPixbufAnimationClass *anim_class = GDK_PIXBUF_ANIMATION_CLASS (klass);
 572
 573         object_class->finalize = gdk_pixbuf_non_anim_finalize;
 574
 575         anim_class->is_static_image = gdk_pixbuf_non_anim_is_static_image;
 576         anim_class->get_static_image = gdk_pixbuf_non_anim_get_static_image;
 577         anim_class->get_size = gdk_pixbuf_non_anim_get_size;
 578         anim_class->get_iter = gdk_pixbuf_non_anim_get_iter;
 579 }
 580
 581 static void
 582 gdk_pixbuf_non_anim_init (GdkPixbufNonAnim *non_anim)
 583 {
 584 }
 585
 586 static void
 587 gdk_pixbuf_non_anim_finalize (GObject *object)
 588 {
 589         GdkPixbufNonAnim *non_anim = GDK_PIXBUF_NON_ANIM (object);
 590
 591         if (non_anim->pixbuf)
 592                 g_object_unref (non_anim->pixbuf);
 593
 594         G_OBJECT_CLASS (gdk_pixbuf_non_anim_parent_class)->finalize (object);
 595 }
 596
 597 GdkPixbufAnimation*
 598 gdk_pixbuf_non_anim_new (GdkPixbuf *pixbuf)
 599 {
 600         GdkPixbufNonAnim *non_anim;
 601
 602         non_anim = g_object_new (GDK_TYPE_PIXBUF_NON_ANIM, NULL);
 603
 604         non_anim->pixbuf = pixbuf;
 605
 606         if (pixbuf)
 607                 g_object_ref (pixbuf);
 608
 609         return GDK_PIXBUF_ANIMATION (non_anim);
 610 }
 611
 612 static gboolean
 613 gdk_pixbuf_non_anim_is_static_image  (GdkPixbufAnimation *animation)
 614 {
 615
 616         return TRUE;
 617 }
 618
 619 static GdkPixbuf*
 620 gdk_pixbuf_non_anim_get_static_image (GdkPixbufAnimation *animation)
 621 {
 622         GdkPixbufNonAnim *non_anim;
 623
 624         non_anim = GDK_PIXBUF_NON_ANIM (animation);
 625
 626         return non_anim->pixbuf;
 627 }
 628
 629 static void
 630 gdk_pixbuf_non_anim_get_size (GdkPixbufAnimation *anim,
 631                               int                *width,
 632                               int                *height)
 633 {
 634         GdkPixbufNonAnim *non_anim;
 635
 636         non_anim = GDK_PIXBUF_NON_ANIM (anim);
 637
 638         if (width)
 639                 *width = gdk_pixbuf_get_width (non_anim->pixbuf);
 640
 641         if (height)
 642                 *height = gdk_pixbuf_get_height (non_anim->pixbuf);
 643 }
 644
 645 static GdkPixbufAnimationIter*
 646 gdk_pixbuf_non_anim_get_iter (GdkPixbufAnimation *anim,
 647                               const GTimeVal     *start_time)
 648 {
 649         GdkPixbufNonAnimIter *iter;
 650
 651         iter = g_object_new (GDK_TYPE_PIXBUF_NON_ANIM_ITER, NULL);
 652
 653         iter->non_anim = GDK_PIXBUF_NON_ANIM (anim);
 654
 655         g_object_ref (iter->non_anim);
 656
 657         return GDK_PIXBUF_ANIMATION_ITER (iter);
 658 }
 659
 660 static void       gdk_pixbuf_non_anim_iter_finalize                   (GObject                *object);
 661 static int        gdk_pixbuf_non_anim_iter_get_delay_time             (GdkPixbufAnimationIter *iter);
 662 static GdkPixbuf* gdk_pixbuf_non_anim_iter_get_pixbuf                 (GdkPixbufAnimationIter *iter);
 663 static gboolean   gdk_pixbuf_non_anim_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter);
 664 static gboolean   gdk_pixbuf_non_anim_iter_advance                    (GdkPixbufAnimationIter *iter,
 665                                                                        const GTimeVal         *current_time);
 666
 667 G_DEFINE_TYPE (GdkPixbufNonAnimIter,
 668                gdk_pixbuf_non_anim_iter,
 669                GDK_TYPE_PIXBUF_ANIMATION_ITER);
 670
 671 static void
 672 gdk_pixbuf_non_anim_iter_class_init (GdkPixbufNonAnimIterClass *klass)
 673 {
 674         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 675         GdkPixbufAnimationIterClass *anim_iter_class =
 676                 GDK_PIXBUF_ANIMATION_ITER_CLASS (klass);
 677
 678         object_class->finalize = gdk_pixbuf_non_anim_iter_finalize;
 679
 680         anim_iter_class->get_delay_time = gdk_pixbuf_non_anim_iter_get_delay_time;
 681         anim_iter_class->get_pixbuf = gdk_pixbuf_non_anim_iter_get_pixbuf;
 682         anim_iter_class->on_currently_loading_frame = gdk_pixbuf_non_anim_iter_on_currently_loading_frame;
 683         anim_iter_class->advance = gdk_pixbuf_non_anim_iter_advance;
 684 }
 685
 686 static void
 687 gdk_pixbuf_non_anim_iter_init (GdkPixbufNonAnimIter *non_iter)
 688 {
 689 }
 690
 691 static void
 692 gdk_pixbuf_non_anim_iter_finalize (GObject *object)
 693 {
 694         GdkPixbufNonAnimIter *iter = GDK_PIXBUF_NON_ANIM_ITER (object);
 695
 696         g_object_unref (iter->non_anim);
 697
 698         G_OBJECT_CLASS (gdk_pixbuf_non_anim_iter_parent_class)->finalize (object);
 699 }
 700
 701 static int
 702 gdk_pixbuf_non_anim_iter_get_delay_time (GdkPixbufAnimationIter *iter)
 703 {
 704         return -1; /* show only frame forever */
 705 }
 706
 707 static GdkPixbuf*
 708 gdk_pixbuf_non_anim_iter_get_pixbuf (GdkPixbufAnimationIter *iter)
 709 {
 710         return GDK_PIXBUF_NON_ANIM_ITER (iter)->non_anim->pixbuf;
 711 }
 712
 713
 714 static gboolean
 715 gdk_pixbuf_non_anim_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter)
 716 {
 717         return TRUE;
 718 }
 719
 720 static gboolean
 721 gdk_pixbuf_non_anim_iter_advance (GdkPixbufAnimationIter *iter,
 722                                   const GTimeVal         *current_time)
 723 {
 724
 725         /* Advancing never requires a refresh */
 726         return FALSE;
 727 }
 728
 729 #define __GDK_PIXBUF_ANIMATION_C__
 730 #include "gdk-pixbuf-aliasdef.c"