image_list.c 41.3 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;
200 201 202 203
    RsttoFile      *file;
    
    /* 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
    RsttoSettings *settings;
211
    RsttoThumbnailer *thumbnailer;
212
    GtkFileFilter *filter;
Stephan Arts's avatar
Stephan Arts committed
213

214
    GList        *image_monitors;
Stephan Arts's avatar
Stephan Arts committed
215 216 217 218 219
    GList        *images;
    gint          n_images;

    GSList       *iterators;
    GCompareFunc  cb_rstto_image_list_compare_func;
220 221

    gboolean      wrap_images;
222 223
};

224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
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 );

239 240 241 242
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
243
rstto_image_list_get_type (void)
244
{
Stephan Arts's avatar
Stephan Arts committed
245 246 247 248 249 250 251 252 253 254 255 256
    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
    };
257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275
    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
276 277 278 279

        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);
280
    }
Stephan Arts's avatar
Stephan Arts committed
281 282


283 284 285
    return rstto_image_list_type;
}

Stephan Arts's avatar
Stephan Arts committed
286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314
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 
}

315 316 317
static void
rstto_image_list_init(RsttoImageList *image_list)
{
318

319
    image_list->priv = g_new0 (RsttoImageListPriv, 1);
Stephan Arts's avatar
Stephan Arts committed
320
    image_list->priv->stamp = g_random_int();
321
    image_list->priv->settings = rstto_settings_new ();
322
    image_list->priv->thumbnailer = rstto_thumbnailer_new();
323 324 325
    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);
326

Stephan Arts's avatar
Stephan Arts committed
327
    image_list->priv->cb_rstto_image_list_compare_func = (GCompareFunc)cb_rstto_image_list_image_name_compare_func;
328 329 330 331 332 333 334 335 336 337 338

    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);

339 340 341 342 343 344
    g_signal_connect (
            G_OBJECT(image_list->priv->thumbnailer),
            "ready",
            G_CALLBACK (cb_rstto_thumbnailer_ready),
            image_list);

345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382
}

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)
{
383 384 385 386 387 388 389 390
    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;
        }
391

392 393 394 395 396 397
        if (image_list->priv->thumbnailer)
        {
            g_object_unref (image_list->priv->thumbnailer);
            image_list->priv->thumbnailer = NULL;
        }

398 399 400 401 402
        if (image_list->priv->filter)
        {
            g_object_unref (image_list->priv->filter);
            image_list->priv->filter= NULL;
        }
403 404 405 406
        
        g_free (image_list->priv);
        image_list->priv = NULL;
    }
407 408 409
}

RsttoImageList *
Stephan Arts's avatar
Stephan Arts committed
410
rstto_image_list_new (void)
411 412 413 414 415 416 417 418 419
{
    RsttoImageList *image_list;

    image_list = g_object_new(RSTTO_TYPE_IMAGE_LIST, NULL);

    return image_list;
}

gboolean
420 421 422 423
rstto_image_list_add_file (
        RsttoImageList *image_list,
        RsttoFile *file,
        GError **error )
424
{
425
    GtkFileFilterInfo filter_info;
Stephan Arts's avatar
Stephan Arts committed
426
    GList *image_iter = g_list_find (image_list->priv->images, file);
427
    GSList *iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
428 429 430
    gint i = 0;
    GtkTreePath *path = NULL;
    GtkTreeIter t_iter;
431
    GFileMonitor *monitor = NULL;
432

433 434 435
    g_return_val_if_fail ( NULL != file , FALSE);
    g_return_val_if_fail ( RSTTO_IS_FILE (file) , FALSE);

Stephan Arts's avatar
Stephan Arts committed
436 437
    if (!image_iter)
    {
438
        if (file)
Stephan Arts's avatar
Stephan Arts committed
439
        {
440 441 442
            filter_info.contains =  GTK_FILE_FILTER_MIME_TYPE | GTK_FILE_FILTER_URI;
            filter_info.uri = rstto_file_get_uri (file);
            filter_info.mime_type = rstto_file_get_content_type (file);
Stephan Arts's avatar
Stephan Arts committed
443

444
            if ( TRUE == gtk_file_filter_filter (image_list->priv->filter, &filter_info))
Stephan Arts's avatar
Stephan Arts committed
445
            {
446 447
                g_object_ref (G_OBJECT (file));

448 449 450
                image_list->priv->images = g_list_insert_sorted (image_list->priv->images, file, rstto_image_list_get_compare_func (image_list));

                image_list->priv->n_images++;
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467

                if (image_list->priv->dir_monitor == NULL)
                {
                    monitor = g_file_monitor_file (
                            rstto_file_get_file (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
468 469 470 471 472 473 474 475 476
                i = g_list_index (image_list->priv->images, file);

                path = gtk_tree_path_new();
                gtk_tree_path_append_index (path, i);
                t_iter.stamp = image_list->priv->stamp;
                t_iter.user_data = file;
                t_iter.user_data3 = GINT_TO_POINTER(i);

                gtk_tree_model_row_inserted(GTK_TREE_MODEL(image_list), path, &t_iter);
477 478 479

                /** TODO: update all iterators */
                while (iter)
Stephan Arts's avatar
Stephan Arts committed
480
                {
481 482 483 484 485
                    if (FALSE == RSTTO_IMAGE_LIST_ITER(iter->data)->priv->sticky)
                    {
                        rstto_image_list_iter_find_file (iter->data, file);
                    }
                    iter = g_slist_next (iter);
Stephan Arts's avatar
Stephan Arts committed
486
                }
Stephan Arts's avatar
Stephan Arts committed
487

488 489 490 491 492
                return TRUE;
            }
            else
            {
                return FALSE;
Stephan Arts's avatar
Stephan Arts committed
493 494
            }
        }
Stephan Arts's avatar
Stephan Arts committed
495
        return FALSE;
496
    }
497

Stephan Arts's avatar
Stephan Arts committed
498
    return TRUE;
499 500 501 502 503 504 505 506
}

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
507 508 509 510 511 512 513 514
/**
 * rstto_image_list_get_iter:
 * @image_list:
 *
 * TODO: track iterators
 *
 * return iter;
 */
515 516 517
RsttoImageListIter *
rstto_image_list_get_iter (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
518
    RsttoFile *file = NULL;
Stephan Arts's avatar
Stephan Arts committed
519
    RsttoImageListIter *iter = NULL;
520
    if (image_list->priv->images)
521
        file = image_list->priv->images->data;
522

523
    iter = rstto_image_list_iter_new (image_list, file);
524

Stephan Arts's avatar
Stephan Arts committed
525 526
    image_list->priv->iterators = g_slist_prepend (image_list->priv->iterators, iter);

527 528 529 530 531
    return iter;
}


void
Stephan Arts's avatar
Stephan Arts committed
532
rstto_image_list_remove_file (RsttoImageList *image_list, RsttoFile *file)
533
{
Stephan Arts's avatar
Stephan Arts committed
534
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
535
    RsttoFile *afile = NULL;
Stephan Arts's avatar
Stephan Arts committed
536
    GtkTreePath *path_ = NULL;
537
    gint index_ = g_list_index (image_list->priv->images, file);
Stephan Arts's avatar
Stephan Arts committed
538

539
    if (index_ != -1)
540
    {
Stephan Arts's avatar
Stephan Arts committed
541

Stephan Arts's avatar
Stephan Arts committed
542
        iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
543 544
        while (iter)
        {
Stephan Arts's avatar
Stephan Arts committed
545
            if (rstto_file_equal(rstto_image_list_iter_get_file (iter->data), file))
Stephan Arts's avatar
Stephan Arts committed
546
            {
Stephan Arts's avatar
Stephan Arts committed
547
                
548
                if (rstto_image_list_iter_get_position (iter->data) == rstto_image_list_get_n_images (image_list)-1)
549
                {
550
                    iter_previous (iter->data, FALSE);
551 552 553
                }
                else
                {
554
                    iter_next (iter->data, FALSE);
555
                }
556 557 558 559
                /* 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
560
                if (rstto_file_equal(rstto_image_list_iter_get_file (iter->data), file))
561
                {
562
                    ((RsttoImageListIter *)(iter->data))->priv->file = NULL;
563
                    g_signal_emit (G_OBJECT (iter->data), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
564
                }
Stephan Arts's avatar
Stephan Arts committed
565 566 567
            }
            iter = g_slist_next (iter);
        }
568

569
        path_ = gtk_tree_path_new();
570
        gtk_tree_path_append_index(path_,index_);
571 572 573

        gtk_tree_model_row_deleted(GTK_TREE_MODEL(image_list), path_);

574
        image_list->priv->images = g_list_remove (image_list->priv->images, file);
575 576 577
        iter = image_list->priv->iterators;
        while (iter)
        {
578 579
            afile = rstto_image_list_iter_get_file(iter->data);
            if (NULL != afile)
580
            {
Stephan Arts's avatar
Stephan Arts committed
581
                if (rstto_file_equal(afile, file))
582
                {
583
                    iter_next (iter->data, FALSE);
584
                }
585 586 587 588
            }
            iter = g_slist_next (iter);
        }

589 590
        g_signal_emit (G_OBJECT (image_list), rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_IMAGE], 0, file, NULL);
        g_object_unref(file);
591 592 593
    }
}

594
static void
595 596
rstto_image_list_remove_all (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
597
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613
    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);     
    }

614 615 616 617
    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;

618 619 620
    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
621

Stephan Arts's avatar
Stephan Arts committed
622
    iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
623 624
    while (iter)
    {
625
        iter_set_position (iter->data, -1, FALSE);
Stephan Arts's avatar
Stephan Arts committed
626 627 628
        iter = g_slist_next (iter);
    }
    g_signal_emit (G_OBJECT (image_list), rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL], 0, NULL);
629 630
}

631 632 633 634 635 636 637 638
gboolean
rstto_image_list_set_directory (
        RsttoImageList *image_list,
        GFile *dir,
        GError **error )
{
    /* Declare variables */
    GFileEnumerator *file_enumerator = NULL;
639
    RsttoFileLoader *loader = NULL;
640 641 642 643 644 645 646 647 648 649 650

    /* Source code block */
    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)
        {
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695
            g_object_ref (dir);

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

            g_idle_add ( (GSourceFunc) cb_rstto_read_file, loader );
        }
    }

    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 )
    {
        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)
696
            {
697
                files[i+1] = loader->files[i];
698
            }
699 700 701 702 703 704 705

            if ( NULL != loader->files )
            {
                g_free (loader->files);
            }
            loader->files = files;
            loader->n_files++;
706 707
        }
    }
708 709 710 711 712 713 714 715
    else
    {
        for (i = 0; i < loader->n_files; ++i)
        {
            rstto_image_list_add_file (
                    loader->image_list,
                    loader->files[i],
                    NULL);
716

717 718 719 720 721 722
            g_object_unref (loader->files[i]);
        }

        rstto_image_list_monitor_dir ( 
                loader->image_list,
                loader->dir );
723

724 725 726 727 728 729 730 731 732
        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;
    }
733 734 735 736
    return TRUE;
}

static void
Stephan Arts's avatar
Stephan Arts committed
737 738 739 740 741 742
rstto_image_list_monitor_dir (
        RsttoImageList *image_list,
        GFile *dir )
{
    GFileMonitor *monitor = NULL;

743
    if ( NULL != image_list->priv->dir_monitor )
Stephan Arts's avatar
Stephan Arts committed
744
    {
745 746
        g_object_unref (image_list->priv->dir_monitor);
        image_list->priv->dir_monitor = NULL;
Stephan Arts's avatar
Stephan Arts committed
747 748
    }

749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
    /* 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
764

765 766 767 768 769 770 771 772
    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
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
}

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 );
790 791 792 793 794 795 796 797
            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
798 799 800 801 802 803
            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 );
804 805 806 807

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

Stephan Arts's avatar
Stephan Arts committed
808 809
            r_file = rstto_file_new (other_file);
            rstto_image_list_add_file (image_list, r_file, NULL);
810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830

            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
831 832 833 834 835 836 837 838 839 840 841
            break;
        default:
            break;
    }

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

842 843 844


GType
Stephan Arts's avatar
Stephan Arts committed
845
rstto_image_list_iter_get_type (void)
846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884
{
    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;

885 886 887 888 889 890 891 892 893 894 895
    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);

896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912
    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);
913
    if (iter->priv->file)
914
    {
915
        iter->priv->file = NULL;
916
    }
Stephan Arts's avatar
Stephan Arts committed
917 918 919 920 921 922

    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;
    }
923 924 925
}

static RsttoImageListIter *
Stephan Arts's avatar
Stephan Arts committed
926
rstto_image_list_iter_new (RsttoImageList *nav, RsttoFile *file)
927 928 929 930
{
    RsttoImageListIter *iter;

    iter = g_object_new(RSTTO_TYPE_IMAGE_LIST_ITER, NULL);
931
    iter->priv->file = file;
932 933 934 935 936 937
    iter->priv->image_list = nav;

    return iter;
}

gboolean
Stephan Arts's avatar
Stephan Arts committed
938
rstto_image_list_iter_find_file (RsttoImageListIter *iter, RsttoFile *file)
939
{
940
    gint pos = g_list_index (iter->priv->image_list->priv->images, file);
941 942
    if (pos > -1)
    {
943 944
        g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE], 0, NULL);

945
        if (iter->priv->file)
946
        {
947
            iter->priv->file = NULL;
948
        }
949
        iter->priv->file = file;
950
        iter->priv->sticky = TRUE;
951 952 953 954 955 956 957 958 959 960 961

        g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);

        return TRUE;
    }
    return FALSE;
}

gint
rstto_image_list_iter_get_position (RsttoImageListIter *iter)
{
962
    if ( NULL == iter->priv->file )
963
    {
964
        return -1;
965
    }
966
    return g_list_index (iter->priv->image_list->priv->images, iter->priv->file);
967 968
}

Stephan Arts's avatar
Stephan Arts committed
969
RsttoFile *
970
rstto_image_list_iter_get_file (RsttoImageListIter *iter)
971
{
972
    return iter->priv->file;
973 974
}

975 976 977 978 979
static void
iter_set_position (
        RsttoImageListIter *iter,
        gint pos,
        gboolean sticky )
980
{
981 982
    g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE], 0, NULL);

983
    if (iter->priv->file)
984
    {
985
        iter->priv->file = NULL;
986 987
    }

Stephan Arts's avatar
Stephan Arts committed
988
    if (pos >= 0)
Stephan Arts's avatar
Stephan Arts committed
989
    {
990
        iter->priv->file = g_list_nth_data (iter->priv->image_list->priv->images, pos); 
Stephan Arts's avatar
Stephan Arts committed
991
    }
992

993 994 995
    g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
}

996 997 998 999 1000 1001 1002 1003 1004 1005
void
rstto_image_list_iter_set_position (RsttoImageListIter *iter, gint pos)
{
    iter_set_position ( iter, pos, TRUE );
}

static gboolean
iter_next (
        RsttoImageListIter *iter,
        gboolean sticky)
1006
{
1007
    GList *position = NULL;
1008
    RsttoImageList *image_list = iter->priv->image_list;
1009
    RsttoFile *file = iter->priv->file;
1010
    gboolean ret_val = FALSE;
1011 1012 1013

    g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE], 0, NULL);

1014
    if (iter->priv->file)
1015
    {
1016 1017
        position = g_list_find (iter->priv->image_list->priv->images, iter->priv->file);
        iter->priv->file = NULL;
1018 1019
    }

1020 1021
    iter->priv->sticky = sticky;

1022 1023
    position = g_list_next (position);
    if (position)
1024
    {
1025
        iter->priv->file = position->data; 
1026 1027 1028 1029

        /* We could move forward, set ret_val to TRUE */
        ret_val = TRUE;
    }
1030 1031
    else
    {
Stephan Arts's avatar
Stephan Arts committed
1032

1033
        if (TRUE == image_list->priv->wrap_images)
1034
        {
1035
            position = g_list_first (iter->priv->image_list->priv->images);
1036 1037 1038 1039 1040 1041

            /* We could move forward, wrapped back to the start of the
             * list, set ret_val to TRUE
             */
            ret_val = TRUE;
        }
1042 1043 1044
        else
            position = g_list_last (iter->priv->image_list->priv->images);

1045
        if (position)
1046
            iter->priv->file = position->data; 
1047
        else
1048
            iter->priv->file = NULL;
1049 1050
    }

1051 1052 1053 1054
    if (file != iter->priv->file)
    {
        g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
    }
1055 1056

    return ret_val;
1057 1058
}

1059
gboolean
1060 1061 1062 1063 1064
rstto_image_list_iter_next (RsttoImageListIter *iter)
{
    return iter_next (iter, TRUE);
}

1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087
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;
        }
    }
}

1088 1089 1090 1091
static gboolean
iter_previous (
        RsttoImageListIter *iter,
        gboolean sticky)
1092
{
1093
    GList *position = NULL;
1094
    RsttoImageList *image_list = iter->priv->image_list;
1095
    RsttoFile *file = iter->priv->file;
1096
    gboolean ret_val = FALSE;
1097 1098 1099

    g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE], 0, NULL);

1100
    if (iter->priv->file)
1101
    {
1102 1103
        position = g_list_find (iter->priv->image_list->priv->images, iter->priv->file);
        iter->priv->file = NULL;
1104 1105
    }

1106 1107
    iter->priv->sticky = sticky;

1108 1109
    position = g_list_previous (position);
    if (position)
1110
    {
1111
        iter->priv->file = position->data; 
1112
    }
1113 1114
    else
    {
1115 1116
        if (TRUE == image_list->priv->wrap_images)
        {
1117
            position = g_list_last (iter->priv->image_list->priv->images);
1118
        }
1119
        else
1120
        {
1121
            position = g_list_first (iter->priv->image_list->priv->images);
1122
        }
1123

1124
        if (position)
1125
        {
1126
            iter->priv->file = position->data; 
1127
        }
1128
        else
1129
        {
1130
            iter->priv->file = NULL;
1131
        }
1132
    }
1133

1134 1135 1136 1137
    if (file != iter->priv->file)
    {
        g_signal_emit (G_OBJECT (iter), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
    }
1138 1139

    return ret_val;
1140 1141 1142 1143 1144 1145

}
gboolean
rstto_image_list_iter_previous (RsttoImageListIter *iter)
{
    return iter_previous (iter, TRUE);
1146 1147
}

1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171

gboolean
rstto_image_list_iter_has_previous (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) == 0)
        {
            return FALSE;
        }
        else
        {
            return TRUE;
        }
    }
}


1172 1173 1174
RsttoImageListIter *
rstto_image_list_iter_clone (RsttoImageListIter *iter)
{
1175
    RsttoImageListIter *new_iter = rstto_image_list_iter_new (iter->priv->image_list, iter->priv->file);
Stephan Arts's avatar
Stephan Arts committed
1176
    rstto_image_list_iter_set_position (new_iter, rstto_image_list_iter_get_position(iter));
1177 1178 1179

    return new_iter;
}
1180 1181 1182 1183

GCompareFunc
rstto_image_list_get_compare_func (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
1184 1185 1186
    return (GCompareFunc)image_list->priv->cb_rstto_image_list_compare_func;
}

1187 1188 1189
void
rstto_image_list_set_compare_func (RsttoImageList *image_list, GCompareFunc func)
{
1190
    GSList *iter = NULL;
1191
    image_list->priv->cb_rstto_image_list_compare_func = func;
1192
    image_list->priv->images = g_list_sort (image_list->priv->images,  func);
1193

1194 1195 1196 1197
    for (iter = image_list->priv->iterators; iter != NULL; iter = g_slist_next (iter))
    {
        g_signal_emit (G_OBJECT (iter->data), rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED], 0, NULL);
    }
1198 1199
}

Stephan Arts's avatar
Stephan Arts committed
1200 1201 1202 1203
/***********************/
/*  Compare Functions  */
/***********************/

1204 1205 1206
void
rstto_image_list_set_sort_by_name (RsttoImageList *image_list)
{
1207
    rstto_image_list_set_compare_func (image_list, (GCompareFunc)cb_rstto_image_list_image_name_compare_func);
1208 1209 1210 1211 1212
}

void
rstto_image_list_set_sort_by_date (RsttoImageList *image_list)
{
1213
    rstto_image_list_set_compare_func (image_list, (GCompareFunc)cb_rstto_image_list_exif_date_compare_func);
1214 1215
}

Stephan Arts's avatar
Stephan Arts committed
1216 1217 1218 1219 1220 1221 1222 1223 1224
/**
 * cb_rstto_image_list_image_name_compare_func:
 * @a:
 * @b:
 *
 *
 * Return value: (see strcmp)
 */
static gint
Stephan Arts's avatar
Stephan Arts committed
1225
cb_rstto_image_list_image_name_compare_func (RsttoFile *a, RsttoFile *b)
Stephan Arts's avatar
Stephan Arts committed