image_list.c 44.2 KB
Newer Older
1
/*
Stephan Arts's avatar
Stephan Arts committed
2
 *  Copyright (c) Stephan Arts 2006-2012 <stephan@xfce.org>
Stephan Arts's avatar
Stephan Arts committed
3
 *
Stephan Arts's avatar
Stephan Arts committed
4 5 6 7 8
 *  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
9
 *  This program is distributed in the hope that it will be useful,
10 11
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Stephan Arts's avatar
Stephan Arts committed
12 13
 *  GNU General Public License for more details.
 * 
14 15
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
Stephan Arts's avatar
Stephan Arts committed
16 17
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 *  02110-1301, USA.
Stephan Arts's avatar
Stephan Arts committed
18
 *
Stephan Arts's avatar
Stephan Arts committed
19 20
 *  Sorting-algorithm taken from the thunar filemanager. 
 *    Copyright (c) Benedict Meurer <benny@xfce.org>
21 22 23 24 25 26 27
 */

#include <config.h>

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

28
#include <stdlib.h>
29 30 31 32
#include <string.h>

#include <libexif/exif-data.h>

Stephan Arts's avatar
Stephan Arts committed
33
#include "util.h"
Stephan Arts's avatar
Stephan Arts committed
34
#include "file.h"
35
#include "image_list.h"
36
#include "thumbnailer.h"
37
#include "settings.h"
38

Stephan Arts's avatar
Stephan Arts committed
39 40 41 42 43
static void
rstto_image_list_tree_model_init (GtkTreeModelIface *iface);
static void
rstto_image_list_tree_sortable_init(GtkTreeSortableIface *iface);

44 45 46 47 48 49 50
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
51 52 53 54 55 56 57 58
static void
cb_file_monitor_changed (
        GFileMonitor      *monitor,
        GFile             *file,
        GFile             *other_file,
        GFileMonitorEvent  event_type,
        gpointer           user_data );

59 60 61 62 63 64 65
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);

66 67 68 69 70 71
static void
cb_rstto_wrap_images_changed (
        GObject *settings,
        GParamSpec *pspec,
        gpointer user_data);

72 73 74 75 76 77
static void
cb_rstto_thumbnailer_ready(
        RsttoThumbnailer *thumbnailer,
        RsttoFile *file,
        gpointer user_data);

78 79 80 81 82 83 84 85 86
static void
rstto_image_list_monitor_dir (
        RsttoImageList *image_list,
        GFile *dir );

static void
rstto_image_list_remove_all (
        RsttoImageList *image_list);

87 88 89 90
static gboolean
iter_next (
        RsttoImageListIter *iter,
        gboolean sticky);
91

92 93 94 95
static gboolean
iter_previous (
        RsttoImageListIter *iter,
        gboolean sticky);
96

97 98 99 100 101 102
static void 
iter_set_position (
        RsttoImageListIter *iter,
        gint pos,
        gboolean sticky);

Stephan Arts's avatar
Stephan Arts committed
103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
/***************************************/
/*  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       */
/***************************************/

174 175 176
static RsttoImageListIter * rstto_image_list_iter_new ();

static gint
Stephan Arts's avatar
Stephan Arts committed
177
cb_rstto_image_list_image_name_compare_func (RsttoFile *a, RsttoFile *b);
Stephan Arts's avatar
Stephan Arts committed
178
static gint
Stephan Arts's avatar
Stephan Arts committed
179
cb_rstto_image_list_exif_date_compare_func (RsttoFile *a, RsttoFile *b);
180 181 182 183 184 185

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

enum
{
Stephan Arts's avatar
Stephan Arts committed
186
    RSTTO_IMAGE_LIST_SIGNAL_REMOVE_IMAGE = 0,
187 188 189 190 191 192 193
    RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL,
    RSTTO_IMAGE_LIST_SIGNAL_COUNT
};

enum
{
    RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED = 0,
194
    RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE,
195 196 197 198 199 200
    RSTTO_IMAGE_LIST_ITER_SIGNAL_COUNT
};

struct _RsttoImageListIterPriv
{
    RsttoImageList *image_list;
Stephan Arts's avatar
Stephan Arts committed
201
    RsttoFile      *r_file;
202 203 204
    
    /* This is set if the iter-position is chosen by the user */
    gboolean        sticky; 
205 206 207 208
};

struct _RsttoImageListPriv
{
Stephan Arts's avatar
Stephan Arts committed
209
    gint           stamp;
210
    GFileMonitor  *dir_monitor;
211
    gint           directory_loader;
212
    RsttoSettings *settings;
213
    RsttoThumbnailer *thumbnailer;
214
    GtkFileFilter *filter;
Stephan Arts's avatar
Stephan Arts committed
215

216
    GList        *image_monitors;
Stephan Arts's avatar
Stephan Arts committed
217 218 219 220 221
    GList        *images;
    gint          n_images;

    GSList       *iterators;
    GCompareFunc  cb_rstto_image_list_compare_func;
222 223

    gboolean      wrap_images;
224 225
};

226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
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 );

241 242 243 244
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
245
rstto_image_list_get_type (void)
246
{
Stephan Arts's avatar
Stephan Arts committed
247 248 249 250 251 252 253 254 255 256 257 258
    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
    };
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277
    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
278 279 280 281

        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);
282
    }
Stephan Arts's avatar
Stephan Arts committed
283 284


285 286 287
    return rstto_image_list_type;
}

Stephan Arts's avatar
Stephan Arts committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
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 
}

317 318 319
static void
rstto_image_list_init(RsttoImageList *image_list)
{
320

321
    image_list->priv = g_new0 (RsttoImageListPriv, 1);
Stephan Arts's avatar
Stephan Arts committed
322
    image_list->priv->stamp = g_random_int();
323
    image_list->priv->settings = rstto_settings_new ();
324
    image_list->priv->thumbnailer = rstto_thumbnailer_new();
325 326 327
    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);
328

Stephan Arts's avatar
Stephan Arts committed
329
    image_list->priv->cb_rstto_image_list_compare_func = (GCompareFunc)cb_rstto_image_list_image_name_compare_func;
330 331 332 333 334 335 336 337 338 339 340

    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);

341 342 343 344 345 346
    g_signal_connect (
            G_OBJECT(image_list->priv->thumbnailer),
            "ready",
            G_CALLBACK (cb_rstto_thumbnailer_ready),
            image_list);

347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384
}

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)
{
385 386 387 388 389 390 391 392
    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;
        }
393

394 395 396 397 398 399
        if (image_list->priv->thumbnailer)
        {
            g_object_unref (image_list->priv->thumbnailer);
            image_list->priv->thumbnailer = NULL;
        }

400 401 402 403 404
        if (image_list->priv->filter)
        {
            g_object_unref (image_list->priv->filter);
            image_list->priv->filter= NULL;
        }
405 406 407 408
        
        g_free (image_list->priv);
        image_list->priv = NULL;
    }
409 410 411
}

RsttoImageList *
Stephan Arts's avatar
Stephan Arts committed
412
rstto_image_list_new (void)
413 414 415 416 417 418 419 420 421
{
    RsttoImageList *image_list;

    image_list = g_object_new(RSTTO_TYPE_IMAGE_LIST, NULL);

    return image_list;
}

gboolean
422 423
rstto_image_list_add_file (
        RsttoImageList *image_list,
Stephan Arts's avatar
Stephan Arts committed
424
        RsttoFile *r_file,
425
        GError **error )
426
{
427
    GtkFileFilterInfo filter_info;
Stephan Arts's avatar
Stephan Arts committed
428
    GList *image_iter = g_list_find (image_list->priv->images, r_file);
429
    GSList *iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
430 431 432
    gint i = 0;
    GtkTreePath *path = NULL;
    GtkTreeIter t_iter;
433
    GFileMonitor *monitor = NULL;
434

Stephan Arts's avatar
Stephan Arts committed
435 436
    g_return_val_if_fail ( NULL != r_file , FALSE);
    g_return_val_if_fail ( RSTTO_IS_FILE (r_file) , FALSE);
437

Stephan Arts's avatar
Stephan Arts committed
438 439
    if (!image_iter)
    {
Stephan Arts's avatar
Stephan Arts committed
440
        if (r_file)
Stephan Arts's avatar
Stephan Arts committed
441
        {
442
            filter_info.contains =  GTK_FILE_FILTER_MIME_TYPE | GTK_FILE_FILTER_URI;
Stephan Arts's avatar
Stephan Arts committed
443 444
            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
445

446
            if ( TRUE == gtk_file_filter_filter (image_list->priv->filter, &filter_info))
Stephan Arts's avatar
Stephan Arts committed
447
            {
Stephan Arts's avatar
Stephan Arts committed
448
                g_object_ref (G_OBJECT (r_file));
449

Stephan Arts's avatar
Stephan Arts committed
450 451 452 453
                image_list->priv->images = g_list_insert_sorted (
                        image_list->priv->images,
                        r_file,
                        rstto_image_list_get_compare_func (image_list));
454 455

                image_list->priv->n_images++;
456 457 458 459

                if (image_list->priv->dir_monitor == NULL)
                {
                    monitor = g_file_monitor_file (
Stephan Arts's avatar
Stephan Arts committed
460
                            rstto_file_get_file (r_file),
461 462 463 464 465 466 467 468 469 470 471 472
                            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
473
                i = g_list_index (image_list->priv->images, r_file);
Stephan Arts's avatar
Stephan Arts committed
474 475 476 477

                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
478
                t_iter.user_data = r_file;
Stephan Arts's avatar
Stephan Arts committed
479 480
                t_iter.user_data3 = GINT_TO_POINTER(i);

Stephan Arts's avatar
Stephan Arts committed
481 482 483 484
                gtk_tree_model_row_inserted (
                        GTK_TREE_MODEL(image_list),
                        path,
                        &t_iter);
485 486 487

                /** TODO: update all iterators */
                while (iter)
Stephan Arts's avatar
Stephan Arts committed
488
                {
489 490
                    if (FALSE == RSTTO_IMAGE_LIST_ITER(iter->data)->priv->sticky)
                    {
Stephan Arts's avatar
Stephan Arts committed
491
                        rstto_image_list_iter_find_file (iter->data, r_file);
492 493
                    }
                    iter = g_slist_next (iter);
Stephan Arts's avatar
Stephan Arts committed
494
                }
Stephan Arts's avatar
Stephan Arts committed
495

496 497 498 499 500
                return TRUE;
            }
            else
            {
                return FALSE;
Stephan Arts's avatar
Stephan Arts committed
501 502
            }
        }
Stephan Arts's avatar
Stephan Arts committed
503
        return FALSE;
504
    }
505

Stephan Arts's avatar
Stephan Arts committed
506
    return TRUE;
507 508 509 510 511 512 513 514
}

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
515 516 517 518 519 520 521 522
/**
 * rstto_image_list_get_iter:
 * @image_list:
 *
 * TODO: track iterators
 *
 * return iter;
 */
523 524 525
RsttoImageListIter *
rstto_image_list_get_iter (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
526
    RsttoFile *r_file = NULL;
Stephan Arts's avatar
Stephan Arts committed
527
    RsttoImageListIter *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
528

529
    if (image_list->priv->images)
Stephan Arts's avatar
Stephan Arts committed
530 531 532
    {
        r_file = image_list->priv->images->data;
    }
533

Stephan Arts's avatar
Stephan Arts committed
534
    iter = rstto_image_list_iter_new (image_list, r_file);
535

Stephan Arts's avatar
Stephan Arts committed
536 537
    image_list->priv->iterators = g_slist_prepend (image_list->priv->iterators, iter);

538 539 540 541 542
    return iter;
}


void
Stephan Arts's avatar
Stephan Arts committed
543 544 545
rstto_image_list_remove_file (
        RsttoImageList *image_list,
        RsttoFile *r_file)
546
{
Stephan Arts's avatar
Stephan Arts committed
547
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
548
    RsttoFile *r_file_a = NULL;
Stephan Arts's avatar
Stephan Arts committed
549
    GtkTreePath *path_ = NULL;
Stephan Arts's avatar
Stephan Arts committed
550 551
    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
552

553
    if (index_ != -1)
554
    {
Stephan Arts's avatar
Stephan Arts committed
555

Stephan Arts's avatar
Stephan Arts committed
556
        iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
557 558
        while (iter)
        {
Stephan Arts's avatar
Stephan Arts committed
559
            if (rstto_file_equal(rstto_image_list_iter_get_file (iter->data), r_file))
Stephan Arts's avatar
Stephan Arts committed
560
            {
Stephan Arts's avatar
Stephan Arts committed
561
                
Stephan Arts's avatar
Stephan Arts committed
562
                if (rstto_image_list_iter_get_position (iter->data) == n_images -1)
563
                {
564
                    iter_previous (iter->data, FALSE);
565 566 567
                }
                else
                {
568
                    iter_next (iter->data, FALSE);
569
                }
570 571 572 573
                /* 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
574 575 576
                if (rstto_file_equal (
                        rstto_image_list_iter_get_file (iter->data),
                        r_file ) )
577
                {
Stephan Arts's avatar
Stephan Arts committed
578 579 580 581 582 583
                    ((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);
584
                }
Stephan Arts's avatar
Stephan Arts committed
585 586 587
            }
            iter = g_slist_next (iter);
        }
588

589
        path_ = gtk_tree_path_new();
590
        gtk_tree_path_append_index(path_,index_);
591 592 593

        gtk_tree_model_row_deleted(GTK_TREE_MODEL(image_list), path_);

Stephan Arts's avatar
Stephan Arts committed
594
        image_list->priv->images = g_list_remove (image_list->priv->images, r_file);
595 596 597
        iter = image_list->priv->iterators;
        while (iter)
        {
Stephan Arts's avatar
Stephan Arts committed
598 599
            r_file_a = rstto_image_list_iter_get_file(iter->data);
            if (NULL != r_file_a)
600
            {
Stephan Arts's avatar
Stephan Arts committed
601
                if (rstto_file_equal(r_file_a, r_file))
602
                {
603
                    iter_next (iter->data, FALSE);
604
                }
605 606 607 608
            }
            iter = g_slist_next (iter);
        }

Stephan Arts's avatar
Stephan Arts committed
609 610 611 612 613 614 615
        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);
616 617 618
    }
}

619
static void
620 621
rstto_image_list_remove_all (RsttoImageList *image_list)
{
Stephan Arts's avatar
Stephan Arts committed
622
    GSList *iter = NULL;
Stephan Arts's avatar
Stephan Arts committed
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638
    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);     
    }

639 640 641 642
    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;

643 644 645
    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
646

Stephan Arts's avatar
Stephan Arts committed
647
    iter = image_list->priv->iterators;
Stephan Arts's avatar
Stephan Arts committed
648 649
    while (iter)
    {
650
        iter_set_position (iter->data, -1, FALSE);
Stephan Arts's avatar
Stephan Arts committed
651 652 653
        iter = g_slist_next (iter);
    }
    g_signal_emit (G_OBJECT (image_list), rstto_image_list_signals[RSTTO_IMAGE_LIST_SIGNAL_REMOVE_ALL], 0, NULL);
654 655
}

656 657 658 659 660 661 662 663
gboolean
rstto_image_list_set_directory (
        RsttoImageList *image_list,
        GFile *dir,
        GError **error )
{
    /* Declare variables */
    GFileEnumerator *file_enumerator = NULL;
664
    RsttoFileLoader *loader = NULL;
665 666

    /* Source code block */
667 668 669 670 671 672
    if (image_list->priv->directory_loader != 0)
    {
        g_source_remove (image_list->priv->directory_loader);
        image_list->priv->directory_loader = 0;
    }

673 674
    rstto_image_list_remove_all (image_list);

Stephan Arts's avatar
Stephan Arts committed
675 676 677 678
    rstto_image_list_monitor_dir ( 
            image_list,
            dir );

679 680 681 682 683 684 685
    /* 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)
        {
686 687 688 689 690 691 692
            g_object_ref (dir);

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

693
            image_list->priv->directory_loader = g_idle_add ( (GSourceFunc) cb_rstto_read_file, loader );
694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721
        }
    }

    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 )
    {
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
        /* 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 */
748 749 750 751 752 753 754 755 756
        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)
757
            {
758
                files[i+1] = loader->files[i];
759
            }
760 761 762 763 764 765 766

            if ( NULL != loader->files )
            {
                g_free (loader->files);
            }
            loader->files = files;
            loader->n_files++;
767 768
        }
    }
769 770 771 772 773 774 775 776
    else
    {
        for (i = 0; i < loader->n_files; ++i)
        {
            rstto_image_list_add_file (
                    loader->image_list,
                    loader->files[i],
                    NULL);
777

778 779 780
            g_object_unref (loader->files[i]);
        }

Stephan Arts's avatar
Stephan Arts committed
781 782 783 784 785 786 787
        /* 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;
        }

788 789 790 791 792 793 794
        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);
        }

Stephan Arts's avatar
Stephan Arts committed
795 796 797 798 799 800 801
        if (loader->n_files > 0)
        {
            g_free (loader->files);
        }
        g_object_unref (loader->file_enum);
        g_free (loader);

802 803
        return FALSE;
    }
804 805 806 807
    return TRUE;
}

static void
Stephan Arts's avatar
Stephan Arts committed
808 809 810 811 812 813
rstto_image_list_monitor_dir (
        RsttoImageList *image_list,
        GFile *dir )
{
    GFileMonitor *monitor = NULL;

814
    if ( NULL != image_list->priv->dir_monitor )
Stephan Arts's avatar
Stephan Arts committed
815
    {
816 817
        g_object_unref (image_list->priv->dir_monitor);
        image_list->priv->dir_monitor = NULL;
Stephan Arts's avatar
Stephan Arts committed
818 819
    }

820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
    /* 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
835

836 837 838 839 840 841 842 843
    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
844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860
}

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 );
861 862 863 864 865 866 867 868
            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
869 870 871 872 873 874
            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 );
875 876 877 878

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

Stephan Arts's avatar
Stephan Arts committed
879 880
            r_file = rstto_file_new (other_file);
            rstto_image_list_add_file (image_list, r_file, NULL);
881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901

            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
902
            break;
Stephan Arts's avatar
Stephan Arts committed
903 904 905
        case G_FILE_MONITOR_EVENT_CHANGED:
            rstto_file_changed (r_file);
            break;
Stephan Arts's avatar
Stephan Arts committed
906 907 908 909 910 911 912 913 914 915
        default:
            break;
    }

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

916 917 918


GType
Stephan Arts's avatar
Stephan Arts committed
919
rstto_image_list_iter_get_type (void)
920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
{
    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;

959 960 961 962 963 964 965 966 967 968 969
    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);

970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985
    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
986
    if (iter->priv->r_file)
987
    {
Stephan Arts's avatar
Stephan Arts committed
988
        iter->priv->r_file = NULL;
989
    }
Stephan Arts's avatar
Stephan Arts committed
990 991 992 993 994 995

    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;
    }
996 997 998
}

static RsttoImageListIter *
Stephan Arts's avatar
Stephan Arts committed
999 1000 1001
rstto_image_list_iter_new (
        RsttoImageList *nav,
        RsttoFile *r_file)
1002 1003 1004 1005
{
    RsttoImageListIter *iter;

    iter = g_object_new(RSTTO_TYPE_IMAGE_LIST_ITER, NULL);
Stephan Arts's avatar
Stephan Arts committed
1006
    iter->priv->r_file = r_file;
1007 1008 1009 1010 1011 1012
    iter->priv->image_list = nav;

    return iter;
}

gboolean
Stephan Arts's avatar
Stephan Arts committed
1013 1014 1015
rstto_image_list_iter_find_file (
        RsttoImageListIter *iter,
        RsttoFile *r_file)
1016
{
Stephan Arts's avatar
Stephan Arts committed
1017 1018
    gint pos = g_list_index (iter->priv->image_list->priv->images, r_file);

1019 1020
    if (pos > -1)
    {
Stephan Arts's avatar
Stephan Arts committed
1021 1022 1023 1024 1025
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
                0,
                NULL);
1026

Stephan Arts's avatar
Stephan Arts committed
1027
        if (iter->priv->r_file)
1028
        {
Stephan Arts's avatar
Stephan Arts committed
1029
            iter->priv->r_file = NULL;
1030
        }
Stephan Arts's avatar
Stephan Arts committed
1031
        iter->priv->r_file = r_file;
1032
        iter->priv->sticky = TRUE;
1033

Stephan Arts's avatar
Stephan Arts committed
1034 1035 1036 1037 1038
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
                0,
                NULL);
1039 1040 1041 1042 1043 1044 1045 1046 1047

        return TRUE;
    }
    return FALSE;
}

gint
rstto_image_list_iter_get_position (RsttoImageListIter *iter)
{
Stephan Arts's avatar
Stephan Arts committed
1048
    if ( NULL == iter->priv->r_file )
1049
    {
1050
        return -1;
1051
    }
Stephan Arts's avatar
Stephan Arts committed
1052
    return g_list_index (iter->priv->image_list->priv->images, iter->priv->r_file);
1053 1054
}

Stephan Arts's avatar
Stephan Arts committed
1055
RsttoFile *
1056
rstto_image_list_iter_get_file (RsttoImageListIter *iter)
1057
{
Stephan Arts's avatar
Stephan Arts committed
1058
    return iter->priv->r_file;
1059 1060
}

1061 1062 1063 1064 1065
static void
iter_set_position (
        RsttoImageListIter *iter,
        gint pos,
        gboolean sticky )
1066
{
Stephan Arts's avatar
Stephan Arts committed
1067 1068 1069 1070 1071
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1072

Stephan Arts's avatar
Stephan Arts committed
1073
    if (iter->priv->r_file)
1074
    {
Stephan Arts's avatar
Stephan Arts committed
1075
        iter->priv->r_file = NULL;
1076 1077
    }

Stephan Arts's avatar
Stephan Arts committed
1078
    if (pos >= 0)
Stephan Arts's avatar
Stephan Arts committed
1079
    {
Stephan Arts's avatar
Stephan Arts committed
1080
        iter->priv->r_file = g_list_nth_data (iter->priv->image_list->priv->images, pos); 
Stephan Arts's avatar
Stephan Arts committed
1081
    }
1082

Stephan Arts's avatar
Stephan Arts committed
1083 1084 1085 1086 1087
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
            0,
            NULL);
1088 1089
}

1090
void
Stephan Arts's avatar
Stephan Arts committed
1091 1092 1093
rstto_image_list_iter_set_position (
        RsttoImageListIter *iter,
        gint pos)
1094 1095 1096 1097 1098 1099 1100 1101
{
    iter_set_position ( iter, pos, TRUE );
}

static gboolean
iter_next (
        RsttoImageListIter *iter,
        gboolean sticky)
1102
{
1103
    GList *position = NULL;
1104
    RsttoImageList *image_list = iter->priv->image_list;
Stephan Arts's avatar
Stephan Arts committed
1105
    RsttoFile *r_file = iter->priv->r_file;
1106
    gboolean ret_val = FALSE;
1107

Stephan Arts's avatar
Stephan Arts committed
1108 1109 1110 1111 1112
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1113

Stephan Arts's avatar
Stephan Arts committed
1114
    if (r_file)
1115
    {
Stephan Arts's avatar
Stephan Arts committed
1116 1117
        position = g_list_find (iter->priv->image_list->priv->images, r_file);
        iter->priv->r_file = NULL;
1118 1119
    }

1120 1121
    iter->priv->sticky = sticky;

1122 1123
    position = g_list_next (position);
    if (position)
1124
    {
Stephan Arts's avatar
Stephan Arts committed
1125
        iter->priv->r_file = position->data; 
1126 1127 1128 1129

        /* We could move forward, set ret_val to TRUE */
        ret_val = TRUE;
    }
1130 1131
    else
    {
Stephan Arts's avatar
Stephan Arts committed
1132

1133
        if (TRUE == image_list->priv->wrap_images)
1134
        {
1135
            position = g_list_first (iter->priv->image_list->priv->images);
1136 1137 1138 1139 1140 1141

            /* We could move forward, wrapped back to the start of the
             * list, set ret_val to TRUE
             */
            ret_val = TRUE;
        }
1142
        else
Stephan Arts's avatar
Stephan Arts committed
1143
        {
1144
            position = g_list_last (iter->priv->image_list->priv->images);
Stephan Arts's avatar
Stephan Arts committed
1145
        }
1146

1147
        if (position)
Stephan Arts's avatar
Stephan Arts committed
1148 1149 1150
        {
            iter->priv->r_file = position->data; 
        }
1151
        else
Stephan Arts's avatar
Stephan Arts committed
1152 1153 1154
        {
            iter->priv->r_file = NULL;
        }
1155 1156
    }

Stephan Arts's avatar
Stephan Arts committed
1157
    if (r_file != iter->priv->r_file)
1158
    {
Stephan Arts's avatar
Stephan Arts committed
1159 1160 1161 1162 1163
        g_signal_emit (
                G_OBJECT (iter),
                rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_CHANGED],
                0,
                NULL);
1164
    }
1165 1166

    return ret_val;
1167 1168
}

1169
gboolean
1170 1171 1172 1173 1174
rstto_image_list_iter_next (RsttoImageListIter *iter)
{
    return iter_next (iter, TRUE);
}

1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
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;
        }
    }
}

1198 1199 1200 1201
static gboolean
iter_previous (
        RsttoImageListIter *iter,
        gboolean sticky)
1202
{
1203
    GList *position = NULL;
1204
    RsttoImageList *image_list = iter->priv->image_list;
Stephan Arts's avatar
Stephan Arts committed
1205
    RsttoFile *r_file = iter->priv->r_file;
1206
    gboolean ret_val = FALSE;
1207

Stephan Arts's avatar
Stephan Arts committed
1208 1209 1210 1211 1212
    g_signal_emit (
            G_OBJECT (iter),
            rstto_image_list_iter_signals[RSTTO_IMAGE_LIST_ITER_SIGNAL_PREPARE_CHANGE],
            0,
            NULL);
1213

Stephan Arts's avatar
Stephan Arts committed
1214
    if (iter->priv->r_file)
1215
    {
Stephan Arts's avatar
Stephan Arts committed
1216 1217
        position = g_list_find (iter->priv->image_list->priv->images, iter->priv->r_file);
        iter->priv->r_file = NULL;
1218 1219
    }

1220 1221
    iter->priv->sticky = sticky;

1222 1223
    position = g_list_previous (position);
    if (position)
1224
    {
Stephan Arts's avatar
Stephan Arts committed
1225
        iter->priv->r_file = position->data; 
1226
    }
1227 1228
    else
    {