image_list.c 43.9 KB
Newer Older
1
/*
2
 *  Copyright (c) Stephan Arts 2009-2011 <stephan@xfce.org>
3 4 5 6 7
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
Stephan Arts's avatar
Stephan Arts committed
8 9
 *
 *  This program is distributed in the hope that it will be useful,
10 11 12 13 14 15 16
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Stephan Arts's avatar
Stephan Arts committed
17
 *
Stephan Arts's avatar
Stephan Arts committed
18 19
 *  Sorting-algorithm taken from the thunar filemanager. 
 *    Copyright (c) Benedict Meurer <benny@xfce.org>
20 21 22 23 24 25 26
 */

#include <config.h>

#include <gtk/gtk.h>
#include <gtk/gtkmarshal.h>

27
#include <stdlib.h>
28 29 30 31
#include <string.h>

#include <libexif/exif-data.h>

Stephan Arts's avatar
Stephan Arts committed
32
#include "util.h"
Stephan Arts's avatar
Stephan Arts committed
33
#include "file.h"
34
#include "image_list.h"
35
#include "thumbnailer.h"
36
#include "settings.h"
37

Stephan Arts's avatar
Stephan Arts committed
38 39 40 41 42
static void
rstto_image_list_tree_model_init (GtkTreeModelIface *iface);
static void
rstto_image_list_tree_sortable_init(GtkTreeSortableIface *iface);

43 44 45 46 47 48 49
static void 
rstto_image_list_init(RsttoImageList *);
static void
rstto_image_list_class_init(RsttoImageListClass *);
static void
rstto_image_list_dispose(GObject *object);

Stephan Arts's avatar
Stephan Arts committed
50 51 52 53 54 55 56 57
static void
cb_file_monitor_changed (
        GFileMonitor      *monitor,
        GFile             *file,
        GFile             *other_file,
        GFileMonitorEvent  event_type,
        gpointer           user_data );

58 59 60 61 62 63 64
static void 
rstto_image_list_iter_init(RsttoImageListIter *);
static void
rstto_image_list_iter_class_init(RsttoImageListIterClass *);
static void
rstto_image_list_iter_dispose(GObject *object);

65 66 67 68 69 70
static void
cb_rstto_wrap_images_changed (
        GObject *settings,
        GParamSpec *pspec,
        gpointer user_data);

71 72 73 74 75 76
static void
cb_rstto_thumbnailer_ready(
        RsttoThumbnailer *thumbnailer,
        RsttoFile *file,
        gpointer user_data);

77 78 79 80 81 82 83 84 85
static void
rstto_image_list_monitor_dir (
        RsttoImageList *image_list,
        GFile *dir );

static void
rstto_image_list_remove_all (
        RsttoImageList *image_list);

86 87 88 89
static gboolean
iter_next (
        RsttoImageListIter *iter,
        gboolean sticky);
90

91 92 93 94
static gboolean
iter_previous (
        RsttoImageListIter *iter,
        gboolean sticky);
95

96 97 98 99 100 101
static void 
iter_set_position (
        RsttoImageListIter *iter,
        gint pos,
        gboolean sticky);

Stephan Arts's avatar
Stephan Arts committed
102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
/***************************************/
/*  Begin TreeModelIface Functions     */
/***************************************/

static GtkTreeModelFlags
image_list_model_get_flags ( GtkTreeModel *tree_model );

static gint
image_list_model_get_n_columns ( GtkTreeModel *tree_model );

static GType
image_list_model_get_column_type (
        GtkTreeModel *tree_model,
        gint index_ );

static gboolean
image_list_model_get_iter (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter,
        GtkTreePath *path );

static GtkTreePath *
image_list_model_get_path (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter );

static void 
image_list_model_get_value (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter,
        gint column,
        GValue *value );

static gboolean
image_list_model_iter_children (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter,
        GtkTreeIter *parent );

static gboolean
image_list_model_iter_has_child (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter );

static gboolean
image_list_model_iter_parent (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter,
        GtkTreeIter *child );

static gint
image_list_model_iter_n_children (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter );

static gboolean 
image_list_model_iter_nth_child (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter,
        GtkTreeIter *parent,
        gint n );

static gboolean
image_list_model_iter_next (
        GtkTreeModel *tree_model,
        GtkTreeIter *iter );

/***************************************/
/*  End TreeModelIface Functions       */
/***************************************/

173 174 175
static RsttoImageListIter * rstto_image_list_iter_new ();

static gint
Stephan Arts's avatar
Stephan Arts committed
176
cb_rstto_image_list_image_name_compare_func (RsttoFile *a, RsttoFile *b);
Stephan Arts's avatar
Stephan Arts committed
177
static gint
Stephan Arts's avatar
Stephan Arts committed
178
cb_rstto_image_list_exif_date_compare_func (RsttoFile *a, RsttoFile *b);
179 180 181 182 183 184

static GObjectClass *parent_class = NULL;
static GObjectClass *iter_parent_class = NULL;

enum
{
Stephan Arts's avatar
Stephan Arts committed
185
    RSTTO_IMAGE_LIST_SIGNAL_REMOVE_IMAGE = 0,
186 187 188 189 190 191 192
    RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL,
    RSTTO_IMAGE_LIST_SIGNAL_COUNT
};

enum
{
    RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED = 0,
193
    RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE,
194 195 196 197 198 199
    RSTTO_IMAGE_LIST_ITER_SIGNAL_COUNT
};

struct _RsttoImageListIterPriv
{
    RsttoImageList *image_list;
Stephan Arts's avatar
Stephan Arts committed
200
    RsttoFile      *r_file;
201 202 203
    
    /* This is set if the iter-position is chosen by the user */
    gboolean        sticky; 
204 205 206 207
};

struct _RsttoImageListPriv
{
Stephan Arts's avatar
Stephan Arts committed
208
    gint           stamp;
209
    GFileMonitor  *dir_monitor;
210
    gint           directory_loader;
211
    RsttoSettings *settings;
212
    RsttoThumbnailer *thumbnailer;
213
    GtkFileFilter *filter;
Stephan Arts's avatar
Stephan Arts committed
214

215
    GList        *image_monitors;
Stephan Arts's avatar
Stephan Arts committed
216 217 218 219 220
    GList        *images;
    gint          n_images;

    GSList       *iterators;
    GCompareFunc  cb_rstto_image_list_compare_func;
221 222

    gboolean      wrap_images;
223 224
};

225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
typedef struct _RsttoFileLoader RsttoFileLoader;

struct _RsttoFileLoader
{
    GFile           *dir;
    RsttoImageList  *image_list;
    GFileEnumerator *file_enum;

    guint            n_files;
    RsttoFile      **files;
};

static gboolean
cb_rstto_read_file ( gpointer user_data );

240 241 242 243
static gint rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_COUNT];
static gint rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_COUNT];

GType
Stephan Arts's avatar
Stephan Arts committed
244
rstto_image_list_get_type (void)
245
{
Stephan Arts's avatar
Stephan Arts committed
246 247 248 249 250 251 252 253 254 255 256 257
    static const GInterfaceInfo tree_model_info =
    {
        (GInterfaceInitFunc) rstto_image_list_tree_model_init,
            NULL,
            NULL
    };
    static const GInterfaceInfo tree_sort_info =
    {
        (GInterfaceInitFunc) rstto_image_list_tree_sortable_init,
            NULL,
            NULL
    };
258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
    static GType rstto_image_list_type = 0;

    if (!rstto_image_list_type)
    {
        static const GTypeInfo rstto_image_list_info = 
        {
            sizeof (RsttoImageListClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) rstto_image_list_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,
            sizeof (RsttoImageList),
            0,
            (GInstanceInitFunc) rstto_image_list_init,
            NULL
        };

        rstto_image_list_type = g_type_register_static (G_TYPE_OBJECT, "RsttoImageList", &rstto_image_list_info, 0);
Stephan Arts's avatar
Stephan Arts committed
277 278 279 280

        g_type_add_interface_static (rstto_image_list_type, GTK_TYPE_TREE_MODEL, &tree_model_info);

        g_type_add_interface_static (rstto_image_list_type, GTK_TYPE_TREE_SORTABLE, &tree_sort_info);
281
    }
Stephan Arts's avatar
Stephan Arts committed
282 283


284 285 286
    return rstto_image_list_type;
}

Stephan Arts's avatar
Stephan Arts committed
287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315
static void
rstto_image_list_tree_model_init (GtkTreeModelIface *iface)
{
    iface->get_flags       = image_list_model_get_flags;
    iface->get_n_columns   = image_list_model_get_n_columns;
    iface->get_column_type = image_list_model_get_column_type;
    iface->get_iter        = image_list_model_get_iter;
    iface->get_path        = image_list_model_get_path;
    iface->get_value       = image_list_model_get_value;
    iface->iter_children   = image_list_model_iter_children;
    iface->iter_has_child  = image_list_model_iter_has_child;
    iface->iter_n_children = image_list_model_iter_n_children;
    iface->iter_nth_child  = image_list_model_iter_nth_child;
    iface->iter_parent     = image_list_model_iter_parent;
    iface->iter_next       = image_list_model_iter_next;
}

static void
rstto_image_list_tree_sortable_init(GtkTreeSortableIface *iface)
{
#if 0 
    iface->get_sort_column_id    = sq_archive_store_get_sort_column_id;
    iface->set_sort_column_id    = sq_archive_store_set_sort_column_id;
    iface->set_sort_func         = sq_archive_store_set_sort_func;            /*NOT SUPPORTED*/
    iface->set_default_sort_func = sq_archive_store_set_default_sort_func;    /*NOT SUPPORTED*/
    iface->has_default_sort_func = sq_archive_store_has_default_sort_func;
#endif 
}

316 317 318
static void
rstto_image_list_init(RsttoImageList *image_list)
{
319

320
    image_list->priv = g_new0 (RsttoImageListPriv, 1);
Stephan Arts's avatar
Stephan Arts committed
321
    image_list->priv->stamp = g_random_int();
322
    image_list->priv->settings = rstto_settings_new ();
323
    image_list->priv->thumbnailer = rstto_thumbnailer_new();
324 325 326
    image_list->priv->filter = gtk_file_filter_new ();
    g_object_ref_sink (image_list->priv->filter);
    gtk_file_filter_add_pixbuf_formats (image_list->priv->filter);
327

Stephan Arts's avatar
Stephan Arts committed
328
    image_list->priv->cb_rstto_image_list_compare_func = (GCompareFunc)cb_rstto_image_list_image_name_compare_func;
329 330 331 332 333 334 335 336 337 338 339

    image_list->priv->wrap_images = rstto_settings_get_boolean_property (
            image_list->priv->settings,
            "wrap-images");

    g_signal_connect (
            G_OBJECT(image_list->priv->settings),
            "notify::wrap-images",
            G_CALLBACK (cb_rstto_wrap_images_changed),
            image_list);

340 341 342 343 344 345
    g_signal_connect (
            G_OBJECT(image_list->priv->thumbnailer),
            "ready",
            G_CALLBACK (cb_rstto_thumbnailer_ready),
            image_list);

346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383
}

static void
rstto_image_list_class_init(RsttoImageListClass *nav_class)
{
    GObjectClass *object_class = G_OBJECT_CLASS(nav_class);

    parent_class = g_type_class_peek_parent(nav_class);

    object_class->dispose = rstto_image_list_dispose;

    rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_IMAGE] = g_signal_new("remove-image",
            G_TYPE_FROM_CLASS(nav_class),
            G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
            0,
            NULL,
            NULL,
            g_cclosure_marshal_VOID__OBJECT,
            G_TYPE_NONE,
            1,
            G_TYPE_OBJECT,
            NULL);

    rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL] = g_signal_new("remove-all",
            G_TYPE_FROM_CLASS(nav_class),
            G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
            0,
            NULL,
            NULL,
            g_cclosure_marshal_VOID__VOID,
            G_TYPE_NONE,
            0,
            NULL);
}

static void
rstto_image_list_dispose(GObject *object)
{
384 385 386 387 388 389 390 391
    RsttoImageList *image_list = RSTTO_IMAGE_LIST(object);
    if (NULL != image_list->priv)
    {
        if (image_list->priv->settings)
        {
            g_object_unref (image_list->priv->settings);
            image_list->priv->settings = NULL;
        }
392

393 394 395 396 397 398
        if (image_list->priv->thumbnailer)
        {
            g_object_unref (image_list->priv->thumbnailer);
            image_list->priv->thumbnailer = NULL;
        }

399 400 401 402 403
        if (image_list->priv->filter)
        {
            g_object_unref (image_list->priv->filter);
            image_list->priv->filter= NULL;
        }
404 405 406 407
        
        g_free (image_list->priv);
        image_list->priv = NULL;
    }
408 409 410
}

RsttoImageList *
Stephan Arts's avatar
Stephan Arts committed
411
rstto_image_list_new (void)
412 413 414 415 416 417 418 419 420
{
    RsttoImageList *image_list;

    image_list = g_object_new(RSTTO_TYPE_IMAGE_LIST, NULL);

    return image_list;
}

gboolean
421 422
rstto_image_list_add_file (
        RsttoImageList *image_list,
Stephan Arts's avatar
Stephan Arts committed
423
        RsttoFile *r_file,
424
        GError **error )
425
{
426
    GtkFileFilterInfo filter_info;
Stephan Arts's avatar
Stephan Arts committed
427
    GList *image_iter = g_list_find (image_list->priv->images, r_file);
428
    GSList *iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
429 430 431
    gint i = 0;
    GtkTreePath *path = NULL;
    GtkTreeIter t_iter;
432
    GFileMonitor *monitor = NULL;
433

Stephan Arts's avatar
Stephan Arts committed
434 435
    g_return_val_if_fail ( NULL != r_file , FALSE);
    g_return_val_if_fail ( RSTTO_IS_FILE (r_file) , FALSE);
436

Stephan Arts's avatar
Stephan Arts committed
437 438
    if (!image_iter)
    {
Stephan Arts's avatar
Stephan Arts committed
439
        if (r_file)
Stephan Arts's avatar
Stephan Arts committed
440
        {
441
            filter_info.contains =  GTK_FILE_FILTER_MIME_TYPE | GTK_FILE_FILTER_URI;
Stephan Arts's avatar
Stephan Arts committed
442 443
            filter_info.uri = rstto_file_get_uri (r_file);
            filter_info.mime_type = rstto_file_get_content_type (r_file);
Stephan Arts's avatar
Stephan Arts committed
444

445
            if ( TRUE == gtk_file_filter_filter (image_list->priv->filter, &filter_info))
Stephan Arts's avatar
Stephan Arts committed
446
            {
Stephan Arts's avatar
Stephan Arts committed
447
                g_object_ref (G_OBJECT (r_file));
448

Stephan Arts's avatar
Stephan Arts committed
449 450 451 452
                image_list->priv->images = g_list_insert_sorted (
                        image_list->priv->images,
                        r_file,
                        rstto_image_list_get_compare_func (image_list));
453 454

                image_list->priv->n_images++;
455 456 457 458

                if (image_list->priv->dir_monitor == NULL)
                {
                    monitor = g_file_monitor_file (
Stephan Arts's avatar
Stephan Arts committed
459
                            rstto_file_get_file (r_file),
460 461 462 463 464 465 466 467 468 469 470 471
                            G_FILE_MONITOR_NONE,
                            NULL,
                            NULL);
                    g_signal_connect (
                            G_OBJECT(monitor),
                            "changed",
                            G_CALLBACK (cb_file_monitor_changed),
                            image_list);
                    image_list->priv->image_monitors = g_list_prepend (
                            image_list->priv->image_monitors, 
                            monitor);
                }
Stephan Arts's avatar
Stephan Arts committed
472
                i = g_list_index (image_list->priv->images, r_file);
Stephan Arts's avatar
Stephan Arts committed
473 474 475 476

                path = gtk_tree_path_new();
                gtk_tree_path_append_index (path, i);
                t_iter.stamp = image_list->priv->stamp;
Stephan Arts's avatar
Stephan Arts committed
477
                t_iter.user_data = r_file;
Stephan Arts's avatar
Stephan Arts committed
478 479
                t_iter.user_data3 = GINT_TO_POINTER(i);

Stephan Arts's avatar
Stephan Arts committed
480 481 482 483
                gtk_tree_model_row_inserted (
                        GTK_TREE_MODEL(image_list),
                        path,
                        &t_iter);
484 485 486

                /** TODO: update all iterators */
                while (iter)
Stephan Arts's avatar
Stephan Arts committed
487
                {
488 489
                    if (FALSE == RSTTO_IMAGE_LIST_ITER(iter->data)->priv->sticky)
                    {
Stephan Arts's avatar
Stephan Arts committed
490
                        rstto_image_list_iter_find_file (iter->data, r_file);
491 492
                    }
                    iter = g_slist_next (iter);
Stephan Arts's avatar
Stephan Arts committed
493
                }
Stephan Arts's avatar
Stephan Arts committed
494

495 496 497 498 499
                return TRUE;
            }
            else
            {
                return FALSE;
Stephan Arts's avatar
Stephan Arts committed
500 501
            }
        }
Stephan Arts's avatar
Stephan Arts committed
502
        return FALSE;
503
    }
504

Stephan Arts's avatar
Stephan Arts committed
505
    return TRUE;
506 507 508 509 510 511 512 513
}

gint
rstto_image_list_get_n_images (RsttoImageList *image_list)
{
    return g_list_length (image_list->priv->images);
}

Stephan Arts's avatar
Stephan Arts committed
514 515 516 517 518 519 520 521
/**
 * rstto_image_list_get_iter:
 * @image_list:
 *
 * TODO: track iterators
 *
 * return iter;
 */
522 523 524
RsttoImageListIter *
rstto_image_list_get_iter (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
525
    RsttoFile *r_file = NULL;
Stephan Arts's avatar
Stephan Arts committed
526
    RsttoImageListIter *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
527

528
    if (image_list->priv->images)
Stephan Arts's avatar
Stephan Arts committed
529 530 531
    {
        r_file = image_list->priv->images->data;
    }
532

Stephan Arts's avatar
Stephan Arts committed
533
    iter = rstto_image_list_iter_new (image_list, r_file);
534

Stephan Arts's avatar
Stephan Arts committed
535 536
    image_list->priv->iterators = g_slist_prepend (image_list->priv->iterators, iter);

537 538 539 540 541
    return iter;
}


void
Stephan Arts's avatar
Stephan Arts committed
542 543 544
rstto_image_list_remove_file (
        RsttoImageList *image_list,
        RsttoFile *r_file)
545
{
Stephan Arts's avatar
Stephan Arts committed
546
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
547
    RsttoFile *r_file_a = NULL;
Stephan Arts's avatar
Stephan Arts committed
548
    GtkTreePath *path_ = NULL;
Stephan Arts's avatar
Stephan Arts committed
549 550
    gint index_ = g_list_index (image_list->priv->images, r_file);
    gint n_images = rstto_image_list_get_n_images (image_list);
Stephan Arts's avatar
Stephan Arts committed
551

552
    if (index_ != -1)
553
    {
Stephan Arts's avatar
Stephan Arts committed
554

Stephan Arts's avatar
Stephan Arts committed
555
        iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
556 557
        while (iter)
        {
Stephan Arts's avatar
Stephan Arts committed
558
            if (rstto_file_equal(rstto_image_list_iter_get_file (iter->data), r_file))
Stephan Arts's avatar
Stephan Arts committed
559
            {
Stephan Arts's avatar
Stephan Arts committed
560
                
Stephan Arts's avatar
Stephan Arts committed
561
                if (rstto_image_list_iter_get_position (iter->data) == n_images -1)
562
                {
563
                    iter_previous (iter->data, FALSE);
564 565 566
                }
                else
                {
567
                    iter_next (iter->data, FALSE);
568
                }
569 570 571 572
                /* If the image is still the same, 
                 * it's a single item list,
                 * and we should force the image in this iter to NULL
                 */
Stephan Arts's avatar
Stephan Arts committed
573 574 575
                if (rstto_file_equal (
                        rstto_image_list_iter_get_file (iter->data),
                        r_file ) )
576
                {
Stephan Arts's avatar
Stephan Arts committed
577 578 579 580 581 582
                    ((RsttoImageListIter *)(iter->data))->priv->r_file = NULL;
                    g_signal_emit (
                            G_OBJECT (iter->data),
                            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
                            0,
                            NULL);
583
                }
Stephan Arts's avatar
Stephan Arts committed
584 585 586
            }
            iter = g_slist_next (iter);
        }
587

588
        path_ = gtk_tree_path_new();
589
        gtk_tree_path_append_index(path_,index_);
590 591 592

        gtk_tree_model_row_deleted(GTK_TREE_MODEL(image_list), path_);

Stephan Arts's avatar
Stephan Arts committed
593
        image_list->priv->images = g_list_remove (image_list->priv->images, r_file);
594 595 596
        iter = image_list->priv->iterators;
        while (iter)
        {
Stephan Arts's avatar
Stephan Arts committed
597 598
            r_file_a = rstto_image_list_iter_get_file(iter->data);
            if (NULL != r_file_a)
599
            {
Stephan Arts's avatar
Stephan Arts committed
600
                if (rstto_file_equal(r_file_a, r_file))
601
                {
602
                    iter_next (iter->data, FALSE);
603
                }
604 605 606 607
            }
            iter = g_slist_next (iter);
        }

Stephan Arts's avatar
Stephan Arts committed
608 609 610 611 612 613 614
        g_signal_emit (
                G_OBJECT (image_list),
                rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_IMAGE],
                0,
                r_file,
                NULL);
        g_object_unref (r_file);
615 616 617
    }
}

618
static void
619 620
rstto_image_list_remove_all (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
621
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637
    GList *image_iter = image_list->priv->images;
    GtkTreePath *path_ = NULL;
    gint i = g_list_length (image_iter);

    while (image_iter)
    {
        i--;
        path_ = gtk_tree_path_new();
        gtk_tree_path_append_index(path_, i);

        gtk_tree_model_row_deleted(GTK_TREE_MODEL(image_list), path_);

        
        image_iter = g_list_next (image_iter);     
    }

638 639 640 641
    g_list_foreach (image_list->priv->image_monitors, (GFunc)g_object_unref, NULL);
    g_list_free (image_list->priv->image_monitors);
    image_list->priv->image_monitors = NULL;

642 643 644
    g_list_foreach (image_list->priv->images, (GFunc)g_object_unref, NULL);
    g_list_free (image_list->priv->images);
    image_list->priv->images = NULL;
Stephan Arts's avatar
Stephan Arts committed
645

Stephan Arts's avatar
Stephan Arts committed
646
    iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
647 648
    while (iter)
    {
649
        iter_set_position (iter->data, -1, FALSE);
Stephan Arts's avatar
Stephan Arts committed
650 651 652
        iter = g_slist_next (iter);
    }
    g_signal_emit (G_OBJECT (image_list), rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL], 0, NULL);
653 654
}

655 656 657 658 659 660 661 662
gboolean
rstto_image_list_set_directory (
        RsttoImageList *image_list,
        GFile *dir,
        GError **error )
{
    /* Declare variables */
    GFileEnumerator *file_enumerator = NULL;
663
    RsttoFileLoader *loader = NULL;
664 665

    /* Source code block */
666 667 668 669 670 671
    if (image_list->priv->directory_loader != 0)
    {
        g_source_remove (image_list->priv->directory_loader);
        image_list->priv->directory_loader = 0;
    }

672 673 674 675 676 677 678 679 680
    rstto_image_list_remove_all (image_list);

    /* Allow all images to be removed by providing NULL to dir */
    if ( NULL != dir )
    {
        file_enumerator = g_file_enumerate_children (dir, "standard::*", 0, NULL, NULL);

        if (NULL != file_enumerator)
        {
681 682 683 684 685 686 687
            g_object_ref (dir);

            loader = g_new0 (RsttoFileLoader, 1);
            loader->dir = dir;
            loader->file_enum = file_enumerator;
            loader->image_list = image_list;

688
            image_list->priv->directory_loader = g_idle_add ( (GSourceFunc) cb_rstto_read_file, loader );
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716
        }
    }

    return TRUE;
}

static gboolean
cb_rstto_read_file ( gpointer user_data )
{
    RsttoFileLoader *loader = user_data;
    GFileInfo       *file_info;
    const gchar     *content_type;
    const gchar     *filename;
    RsttoFile      **files;
    GFile           *child_file;
    guint            i;
    GSList          *iter;

    /* Check the inputs */
    g_return_val_if_fail ( NULL != loader, FALSE );
    g_return_val_if_fail ( NULL != loader->file_enum, FALSE );

    file_info = g_file_enumerator_next_file (
            loader->file_enum,
            NULL,
            NULL );
    if ( NULL != file_info )
    {
717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
        /* Allow for 'progressive' loading */
        if (loader->n_files == 100)
        {
            for (i = 0; i < loader->n_files; ++i)
            {
                rstto_image_list_add_file (
                        loader->image_list,
                        loader->files[i],
                        NULL);

                g_object_unref (loader->files[i]);
            }

            iter = loader->image_list->priv->iterators;
            while (iter)
            {
                g_signal_emit (G_OBJECT (iter->data), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
                iter = g_slist_next (iter);
            }

            g_free (loader->files);
            loader->files = NULL;
            loader->n_files = 0;
        }

        /* Add file to the list */
743 744 745 746 747 748 749 750 751
        content_type  = g_file_info_get_content_type (file_info);
        if (strncmp (content_type, "image/", 6) == 0)
        {
            filename = g_file_info_get_name (file_info);
            child_file = g_file_get_child (loader->dir, filename);
            files = g_new0 ( RsttoFile *, loader->n_files+1);
            files[0] = rstto_file_new (child_file);

            for (i = 0; i < loader->n_files; ++i)
752
            {
753
                files[i+1] = loader->files[i];
754
            }
755 756 757 758 759 760 761

            if ( NULL != loader->files )
            {
                g_free (loader->files);
            }
            loader->files = files;
            loader->n_files++;
762 763
        }
    }
764 765 766 767 768 769 770 771
    else
    {
        for (i = 0; i < loader->n_files; ++i)
        {
            rstto_image_list_add_file (
                    loader->image_list,
                    loader->files[i],
                    NULL);
772

773 774 775 776 777 778
            g_object_unref (loader->files[i]);
        }

        rstto_image_list_monitor_dir ( 
                loader->image_list,
                loader->dir );
779

Stephan Arts's avatar
Stephan Arts committed
780 781 782 783 784 785 786
        /* This is a hack, use a closure */
        if (loader->image_list->priv->directory_loader != 0)
        {
            g_source_remove (loader->image_list->priv->directory_loader);
            loader->image_list->priv->directory_loader = 0;
        }

787 788 789 790 791 792 793 794 795
        iter = loader->image_list->priv->iterators;
        while (iter)
        {
            g_signal_emit (G_OBJECT (iter->data), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
            iter = g_slist_next (iter);
        }

        return FALSE;
    }
796 797 798 799
    return TRUE;
}

static void
Stephan Arts's avatar
Stephan Arts committed
800 801 802 803 804 805
rstto_image_list_monitor_dir (
        RsttoImageList *image_list,
        GFile *dir )
{
    GFileMonitor *monitor = NULL;

806
    if ( NULL != image_list->priv->dir_monitor )
Stephan Arts's avatar
Stephan Arts committed
807
    {
808 809
        g_object_unref (image_list->priv->dir_monitor);
        image_list->priv->dir_monitor = NULL;
Stephan Arts's avatar
Stephan Arts committed
810 811
    }

812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
    /* Allow a monitor to be removed by providing NULL to dir */
    if ( NULL != dir )
    {
        monitor = g_file_monitor_directory (
                dir,
                G_FILE_MONITOR_NONE,
                NULL,
                NULL);

        g_signal_connect (
                G_OBJECT(monitor),
                "changed",
                G_CALLBACK (cb_file_monitor_changed),
                image_list);
    }
Stephan Arts's avatar
Stephan Arts committed
827

828 829 830 831 832 833 834 835
    if (image_list->priv->image_monitors)
    {
        g_list_foreach (image_list->priv->image_monitors, (GFunc)g_object_unref, NULL);
        g_list_free (image_list->priv->image_monitors);
        image_list->priv->image_monitors = NULL;
    }

    image_list->priv->dir_monitor = monitor;
Stephan Arts's avatar
Stephan Arts committed
836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
}

static void
cb_file_monitor_changed (
        GFileMonitor      *monitor,
        GFile             *file,
        GFile             *other_file,
        GFileMonitorEvent  event_type,
        gpointer           user_data )
{
    RsttoImageList *image_list = RSTTO_IMAGE_LIST (user_data);
    RsttoFile *r_file = rstto_file_new (file);

    switch ( event_type )
    {
        case G_FILE_MONITOR_EVENT_DELETED:
            rstto_image_list_remove_file ( image_list, r_file );
853 854 855 856 857 858 859 860
            if (image_list->priv->dir_monitor == NULL)
            {
                image_list->priv->image_monitors = g_list_remove (
                        image_list->priv->image_monitors,
                        monitor);   
                g_object_unref (monitor);
                monitor = NULL;
            }
Stephan Arts's avatar
Stephan Arts committed
861 862 863 864 865 866
            break;
        case G_FILE_MONITOR_EVENT_CREATED:
            rstto_image_list_add_file (image_list, r_file, NULL);
            break;
        case G_FILE_MONITOR_EVENT_MOVED:
            rstto_image_list_remove_file ( image_list, r_file );
867 868 869 870

            /* Remove our reference, reusing pointer */
            g_object_unref (r_file);

Stephan Arts's avatar
Stephan Arts committed
871 872
            r_file = rstto_file_new (other_file);
            rstto_image_list_add_file (image_list, r_file, NULL);
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893

            if (image_list->priv->dir_monitor == NULL)
            {
                image_list->priv->image_monitors = g_list_remove (
                        image_list->priv->image_monitors,
                        monitor);   
                g_object_unref (monitor);
                monitor = g_file_monitor_file (
                        other_file,
                        G_FILE_MONITOR_NONE,
                        NULL,
                        NULL);
                g_signal_connect (
                        G_OBJECT(monitor),
                        "changed",
                        G_CALLBACK (cb_file_monitor_changed),
                        image_list);
                image_list->priv->image_monitors = g_list_prepend (
                        image_list->priv->image_monitors, 
                        monitor);
            }
Stephan Arts's avatar
Stephan Arts committed
894 895 896 897 898 899 900 901 902 903 904
            break;
        default:
            break;
    }

    if ( NULL != r_file )
    {
        g_object_unref (r_file);
    }
}

905 906 907


GType
Stephan Arts's avatar
Stephan Arts committed
908
rstto_image_list_iter_get_type (void)
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947
{
    static GType rstto_image_list_iter_type = 0;

    if (!rstto_image_list_iter_type)
    {
        static const GTypeInfo rstto_image_list_iter_info = 
        {
            sizeof (RsttoImageListIterClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) rstto_image_list_iter_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,
            sizeof (RsttoImageListIter),
            0,
            (GInstanceInitFunc) rstto_image_list_iter_init,
            NULL
        };

        rstto_image_list_iter_type = g_type_register_static (G_TYPE_OBJECT, "RsttoImageListIter", &rstto_image_list_iter_info, 0);
    }
    return rstto_image_list_iter_type;
}

static void
rstto_image_list_iter_init (RsttoImageListIter *iter)
{
    iter->priv = g_new0 (RsttoImageListIterPriv, 1);
}

static void
rstto_image_list_iter_class_init(RsttoImageListIterClass *iter_class)
{
    GObjectClass *object_class = G_OBJECT_CLASS(iter_class);

    iter_parent_class = g_type_class_peek_parent(iter_class);

    object_class->dispose = rstto_image_list_iter_dispose;

948 949 950 951 952 953 954 955 956 957 958
    rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE] = g_signal_new("prepare-change",
            G_TYPE_FROM_CLASS(iter_class),
            G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
            0,
            NULL,
            NULL,
            g_cclosure_marshal_VOID__VOID,
            G_TYPE_NONE,
            0,
            NULL);

959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
    rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED] = g_signal_new("changed",
            G_TYPE_FROM_CLASS(iter_class),
            G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
            0,
            NULL,
            NULL,
            g_cclosure_marshal_VOID__VOID,
            G_TYPE_NONE,
            0,
            NULL);

}

static void
rstto_image_list_iter_dispose (GObject *object)
{
    RsttoImageListIter *iter = RSTTO_IMAGE_LIST_ITER(object);
Stephan Arts's avatar
Stephan Arts committed
976
    if (iter->priv->r_file)
977
    {
Stephan Arts's avatar
Stephan Arts committed
978
        iter->priv->r_file = NULL;
979
    }
Stephan Arts's avatar
Stephan Arts committed
980 981 982 983 984 985

    if (iter->priv->image_list)
    {
        iter->priv->image_list->priv->iterators = g_slist_remove (iter->priv->image_list->priv->iterators, iter);
        iter->priv->image_list= NULL;
    }
986 987 988
}

static RsttoImageListIter *
Stephan Arts's avatar
Stephan Arts committed
989 990 991
rstto_image_list_iter_new (
        RsttoImageList *nav,
        RsttoFile *r_file)
992 993 994 995
{
    RsttoImageListIter *iter;

    iter = g_object_new(RSTTO_TYPE_IMAGE_LIST_ITER, NULL);
Stephan Arts's avatar
Stephan Arts committed
996
    iter->priv->r_file = r_file;
997 998 999 1000 1001 1002
    iter->priv->image_list = nav;

    return iter;
}

gboolean
Stephan Arts's avatar
Stephan Arts committed
1003 1004 1005
rstto_image_list_iter_find_file (
        RsttoImageListIter *iter,
        RsttoFile *r_file)
1006
{
Stephan Arts's avatar
Stephan Arts committed
1007 1008
    gint pos = g_list_index (iter->priv->image_list->priv->images, r_file);

1009 1010
    if (pos > -1)
    {
Stephan Arts's avatar
Stephan Arts committed
1011 1012 1013 1014 1015
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
                0,
                NULL);
1016

Stephan Arts's avatar
Stephan Arts committed
1017
        if (iter->priv->r_file)
1018
        {
Stephan Arts's avatar
Stephan Arts committed
1019
            iter->priv->r_file = NULL;
1020
        }
Stephan Arts's avatar
Stephan Arts committed
1021
        iter->priv->r_file = r_file;
1022
        iter->priv->sticky = TRUE;
1023

Stephan Arts's avatar
Stephan Arts committed
1024 1025 1026 1027 1028
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
                0,
                NULL);
1029 1030 1031 1032 1033 1034 1035 1036 1037

        return TRUE;
    }
    return FALSE;
}

gint
rstto_image_list_iter_get_position (RsttoImageListIter *iter)
{
Stephan Arts's avatar
Stephan Arts committed
1038
    if ( NULL == iter->priv->r_file )
1039
    {
1040
        return -1;
1041
    }
Stephan Arts's avatar
Stephan Arts committed
1042
    return g_list_index (iter->priv->image_list->priv->images, iter->priv->r_file);
1043 1044
}

Stephan Arts's avatar
Stephan Arts committed
1045
RsttoFile *
1046
rstto_image_list_iter_get_file (RsttoImageListIter *iter)
1047
{
Stephan Arts's avatar
Stephan Arts committed
1048
    return iter->priv->r_file;
1049 1050
}

1051 1052 1053 1054 1055
static void
iter_set_position (
        RsttoImageListIter *iter,
        gint pos,
        gboolean sticky )
1056
{
Stephan Arts's avatar
Stephan Arts committed
1057 1058 1059 1060 1061
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1062

Stephan Arts's avatar
Stephan Arts committed
1063
    if (iter->priv->r_file)
1064
    {
Stephan Arts's avatar
Stephan Arts committed
1065
        iter->priv->r_file = NULL;
1066 1067
    }

Stephan Arts's avatar
Stephan Arts committed
1068
    if (pos >= 0)
Stephan Arts's avatar
Stephan Arts committed
1069
    {
Stephan Arts's avatar
Stephan Arts committed
1070
        iter->priv->r_file = g_list_nth_data (iter->priv->image_list->priv->images, pos); 
Stephan Arts's avatar
Stephan Arts committed
1071
    }
1072

Stephan Arts's avatar
Stephan Arts committed
1073 1074 1075 1076 1077
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
            0,
            NULL);
1078 1079
}

1080
void
Stephan Arts's avatar
Stephan Arts committed
1081 1082 1083
rstto_image_list_iter_set_position (
        RsttoImageListIter *iter,
        gint pos)
1084 1085 1086 1087 1088 1089 1090 1091
{
    iter_set_position ( iter, pos, TRUE );
}

static gboolean
iter_next (
        RsttoImageListIter *iter,
        gboolean sticky)
1092
{
1093
    GList *position = NULL;
1094
    RsttoImageList *image_list = iter->priv->image_list;
Stephan Arts's avatar
Stephan Arts committed
1095
    RsttoFile *r_file = iter->priv->r_file;
1096
    gboolean ret_val = FALSE;
1097

Stephan Arts's avatar
Stephan Arts committed
1098 1099 1100 1101 1102
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1103

Stephan Arts's avatar
Stephan Arts committed
1104
    if (r_file)
1105
    {
Stephan Arts's avatar
Stephan Arts committed
1106 1107
        position = g_list_find (iter->priv->image_list->priv->images, r_file);
        iter->priv->r_file = NULL;
1108 1109
    }

1110 1111
    iter->priv->sticky = sticky;

1112 1113
    position = g_list_next (position);
    if (position)
1114
    {
Stephan Arts's avatar
Stephan Arts committed
1115
        iter->priv->r_file = position->data; 
1116 1117 1118 1119

        /* We could move forward, set ret_val to TRUE */
        ret_val = TRUE;
    }
1120 1121
    else
    {
Stephan Arts's avatar
Stephan Arts committed
1122

1123
        if (TRUE == image_list->priv->wrap_images)
1124
        {
1125
            position = g_list_first (iter->priv->image_list->priv->images);
1126 1127 1128 1129 1130 1131

            /* We could move forward, wrapped back to the start of the
             * list, set ret_val to TRUE
             */
            ret_val = TRUE;
        }
1132
        else
Stephan Arts's avatar
Stephan Arts committed
1133
        {
1134
            position = g_list_last (iter->priv->image_list->priv->images);
Stephan Arts's avatar
Stephan Arts committed
1135
        }
1136

1137
        if (position)
Stephan Arts's avatar
Stephan Arts committed
1138 1139 1140
        {
            iter->priv->r_file = position->data; 
        }
1141
        else
Stephan Arts's avatar
Stephan Arts committed
1142 1143 1144
        {
            iter->priv->r_file = NULL;
        }
1145 1146
    }

Stephan Arts's avatar
Stephan Arts committed
1147
    if (r_file != iter->priv->r_file)
1148
    {
Stephan Arts's avatar
Stephan Arts committed
1149 1150 1151 1152 1153
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
                0,
                NULL);
1154
    }
1155 1156

    return ret_val;
1157 1158
}

1159
gboolean
1160 1161 1162 1163 1164
rstto_image_list_iter_next (RsttoImageListIter *iter)
{
    return iter_next (iter, TRUE);
}

1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
gboolean
rstto_image_list_iter_has_next (RsttoImageListIter *iter)
{
    RsttoImageList *image_list = iter->priv->image_list;

    if (image_list->priv->wrap_images)
    {
        return TRUE;
    }
    else
    {
        if (rstto_image_list_iter_get_position (iter) ==
            (rstto_image_list_get_n_images (image_list) -1))
        {
            return FALSE;
        }
        else
        {
            return TRUE;
        }
    }
}

1188 1189 1190 1191
static gboolean
iter_previous (
        RsttoImageListIter *iter,
        gboolean sticky)
1192
{
1193
    GList *position = NULL;
1194
    RsttoImageList *image_list = iter->priv->image_list;
Stephan Arts's avatar
Stephan Arts committed
1195
    RsttoFile *r_file = iter->priv->r_file;
1196
    gboolean ret_val = FALSE;
1197

Stephan Arts's avatar
Stephan Arts committed
1198 1199 1200 1201 1202
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1203

Stephan Arts's avatar
Stephan Arts committed
1204
    if (iter->priv->r_file)
1205
    {
Stephan Arts's avatar
Stephan Arts committed
1206 1207
        position = g_list_find (iter->priv->image_list->priv->images, iter->priv->r_file);
        iter->priv->r_file = NULL;
1208 1209
    }

1210 1211
    iter->priv->sticky = sticky;

1212 1213
    position = g_list_previous (position);
    if (position)
1214
    {
Stephan Arts's avatar
Stephan Arts committed
1215
        iter->priv->r_file = position->data; 
1216
    }
1217 1218
    else
    {
1219 1220
        if (TRUE == image_list->priv->wrap_images)
        {
1221
            position = g_list_last (iter->priv->image_list->priv->images);
1222
        }
1223
        else
1224
        {
1225
            position = g_list_first (iter->priv->image_list->priv->images);
1226
        }
1227

1228
        if (position)