src/image_load_collection.c

   1 /*
   2  * Copyright (C) 20018 - The Geeqie Team
   3  *
   4  * Author: Colin Clark
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "main.h"
  22 #include "image-load.h"
  23 #include "image_load_collection.h"
  24
  25 #include "cache.h"
  26 #include "misc.h"
  27 #include "ui_fileops.h"
  28
  29 typedef struct _ImageLoaderCOLLECTION ImageLoaderCOLLECTION;
  30 struct _ImageLoaderCOLLECTION {
  31         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  32         ImageLoaderBackendCbSize size_cb;
  33         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  34         gpointer data;
  35         GdkPixbuf *pixbuf;
  36         guint requested_width;
  37         guint requested_height;
  38         gboolean abort;
  39 };
  40
  41 static gboolean image_loader_collection_load(gpointer loader, const guchar *buf, gsize count, GError **error)
  42 {
  43         ImageLoaderCOLLECTION *ld = (ImageLoaderCOLLECTION *) loader;
  44         ImageLoader *il = ld->data;
  45
  46         #define LINE_LENGTH 1000
  47
  48         gboolean ret = FALSE;
  49         gchar *randname;
  50         gchar *cmd_line;
  51         FILE *fp = NULL;
  52         gint line_count = 0;
  53         GString *file_names = g_string_new(NULL);
  54         gchar line[LINE_LENGTH];
  55         gchar **split_line = NULL;
  56         gchar *cache_found;
  57         gchar *pathl;
  58
  59         if (runcmd("which montage >/dev/null 2>&1") == 0)
  60                 {
  61                 pathl = path_from_utf8(il->fd->path);
  62                 fp = fopen(pathl, "r");
  63                 g_free(pathl);
  64                 if (fp)
  65                         {
  66                         while(fgets(line, LINE_LENGTH, fp) && line_count < options->thumbnails.collection_preview)
  67                                 {
  68                                 if (line[0] && line[0] != '#')
  69                                         {
  70                                         split_line = g_strsplit(line, "\"", 4);
  71                                         cache_found = cache_find_location(CACHE_TYPE_THUMB, split_line[1]);
  72                                         if (cache_found)
  73                                                 {
  74                                                 file_names = g_string_append(file_names, g_strconcat("\"", cache_found,"\" ", NULL));
  75                                                 line_count++;
  76                                                 }
  77                                         g_free(cache_found);
  78                                         }
  79                                         if (split_line)
  80                                                 {
  81                                                 g_strfreev(split_line);
  82                                                 }
  83                                         split_line = NULL;
  84                                 }
  85                         fclose(fp);
  86
  87                         if (file_names->len > 0)
  88                                 {
  89                                 randname = g_strdup("/tmp/geeqie_collection_XXXXXX.png");
  90                                 g_mkstemp(randname);
  91
  92                                 cmd_line = g_strdup_printf("montage %s -geometry %dx%d+1+1 %s >/dev/null 2>&1", file_names->str, options->thumbnails.max_width, options->thumbnails.max_height, randname);
  93
  94                                 runcmd(cmd_line);
  95                                 ld->pixbuf = gdk_pixbuf_new_from_file(randname, NULL);
  96                                 if (ld->pixbuf)
  97                                         {
  98                                         ld->area_updated_cb(loader, 0, 0, gdk_pixbuf_get_width(ld->pixbuf), gdk_pixbuf_get_height(ld->pixbuf), ld->data);
  99                                         }
 100
 101                                 unlink(randname);
 102                                 g_free(randname);
 103                                 g_string_free(file_names, TRUE);
 104                                 g_free(cmd_line);
 105
 106                                 ret = TRUE;
 107                                 }
 108                         else
 109                                 {
 110                                 g_string_free(file_names, TRUE);
 111                                 }
 112                         }
 113                 }
 114         return ret;
 115 }
 116
 117 static gpointer image_loader_collection_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
 118 {
 119         ImageLoaderCOLLECTION *loader = g_new0(ImageLoaderCOLLECTION, 1);
 120         loader->area_updated_cb = area_updated_cb;
 121         loader->size_cb = size_cb;
 122         loader->area_prepared_cb = area_prepared_cb;
 123         loader->data = data;
 124         return (gpointer) loader;
 125 }
 126
 127 static void image_loader_collection_set_size(gpointer loader, int width, int height)
 128 {
 129         ImageLoaderCOLLECTION *ld = (ImageLoaderCOLLECTION *) loader;
 130         ld->requested_width = width;
 131         ld->requested_height = height;
 132 }
 133
 134 static GdkPixbuf* image_loader_collection_get_pixbuf(gpointer loader)
 135 {
 136         ImageLoaderCOLLECTION *ld = (ImageLoaderCOLLECTION *) loader;
 137         return ld->pixbuf;
 138 }
 139
 140 static gchar* image_loader_collection_get_format_name(gpointer loader)
 141 {
 142         return g_strdup("collection");
 143 }
 144 static gchar** image_loader_collection_get_format_mime_types(gpointer loader)
 145 {
 146         static gchar *mime[] = {"image/png", NULL};
 147         return g_strdupv(mime);
 148 }
 149
 150 static gboolean image_loader_collection_close(gpointer loader, GError **error)
 151 {
 152         return TRUE;
 153 }
 154
 155 static void image_loader_collection_abort(gpointer loader)
 156 {
 157         ImageLoaderCOLLECTION *ld = (ImageLoaderCOLLECTION *) loader;
 158         ld->abort = TRUE;
 159 }
 160
 161 static void image_loader_collection_free(gpointer loader)
 162 {
 163         ImageLoaderCOLLECTION *ld = (ImageLoaderCOLLECTION *) loader;
 164         if (ld->pixbuf) g_object_unref(ld->pixbuf);
 165         g_free(ld);
 166 }
 167
 168 void image_loader_backend_set_collection(ImageLoaderBackend *funcs)
 169 {
 170         funcs->loader_new = image_loader_collection_new;
 171         funcs->set_size = image_loader_collection_set_size;
 172         funcs->load = image_loader_collection_load;
 173         funcs->write = NULL;
 174         funcs->get_pixbuf = image_loader_collection_get_pixbuf;
 175         funcs->close = image_loader_collection_close;
 176         funcs->abort = image_loader_collection_abort;
 177         funcs->free = image_loader_collection_free;
 178         funcs->get_format_name = image_loader_collection_get_format_name;
 179         funcs->get_format_mime_types = image_loader_collection_get_format_mime_types;
 180 }
 181
 182 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */