src/image-load-collection.cc

   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 struct ImageLoaderCOLLECTION {
  30         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  31         ImageLoaderBackendCbSize size_cb;
  32         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  33         gpointer data;
  34         GdkPixbuf *pixbuf;
  35         guint requested_width;
  36         guint requested_height;
  37         gboolean abort;
  38 };
  39
  40 static gboolean image_loader_collection_load(gpointer loader, const guchar *, gsize, GError **)
  41 {
  42         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
  43         auto il = static_cast<ImageLoader *>(ld->data);
  44
  45         #define LINE_LENGTH 1000
  46
  47         gboolean ret = FALSE;
  48         gchar *randname;
  49         gchar *cmd_line;
  50         FILE *fp = nullptr;
  51         gint line_count = 0;
  52         GString *file_names = g_string_new(nullptr);
  53         gchar line[LINE_LENGTH];
  54         gchar **split_line = nullptr;
  55         gchar *cache_found;
  56         gchar *pathl;
  57
  58         if (runcmd("which montage >/dev/null 2>&1") == 0)
  59                 {
  60                 pathl = path_from_utf8(il->fd->path);
  61                 fp = fopen(pathl, "r");
  62                 g_free(pathl);
  63                 if (fp)
  64                         {
  65                         while(fgets(line, LINE_LENGTH, fp) && line_count < options->thumbnails.collection_preview)
  66                                 {
  67                                 if (line[0] && line[0] != '#')
  68                                         {
  69                                         split_line = g_strsplit(line, "\"", 4);
  70                                         cache_found = cache_find_location(CACHE_TYPE_THUMB, split_line[1]);
  71                                         if (cache_found)
  72                                                 {
  73                                                 file_names = g_string_append(file_names, g_strconcat("\"", cache_found,"\" ", NULL));
  74                                                 line_count++;
  75                                                 }
  76                                         g_free(cache_found);
  77                                         }
  78                                         if (split_line)
  79                                                 {
  80                                                 g_strfreev(split_line);
  81                                                 }
  82                                         split_line = nullptr;
  83                                 }
  84                         fclose(fp);
  85
  86                         if (file_names->len > 0)
  87                                 {
  88                                 randname = g_strdup("/tmp/geeqie_collection_XXXXXX.png");
  89                                 g_mkstemp(randname);
  90
  91                                 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);
  92
  93                                 runcmd(cmd_line);
  94                                 ld->pixbuf = gdk_pixbuf_new_from_file(randname, nullptr);
  95                                 if (ld->pixbuf)
  96                                         {
  97                                         ld->area_updated_cb(loader, 0, 0, gdk_pixbuf_get_width(ld->pixbuf), gdk_pixbuf_get_height(ld->pixbuf), ld->data);
  98                                         }
  99
 100                                 unlink(randname);
 101                                 g_free(randname);
 102                                 g_string_free(file_names, TRUE);
 103                                 g_free(cmd_line);
 104
 105                                 ret = TRUE;
 106                                 }
 107                         else
 108                                 {
 109                                 g_string_free(file_names, TRUE);
 110                                 }
 111                         }
 112                 }
 113         return ret;
 114 }
 115
 116 static gpointer image_loader_collection_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
 117 {
 118         auto loader = g_new0(ImageLoaderCOLLECTION, 1);
 119         loader->area_updated_cb = area_updated_cb;
 120         loader->size_cb = size_cb;
 121         loader->area_prepared_cb = area_prepared_cb;
 122         loader->data = data;
 123         return loader;
 124 }
 125
 126 static void image_loader_collection_set_size(gpointer loader, int width, int height)
 127 {
 128         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 129         ld->requested_width = width;
 130         ld->requested_height = height;
 131 }
 132
 133 static GdkPixbuf* image_loader_collection_get_pixbuf(gpointer loader)
 134 {
 135         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 136         return ld->pixbuf;
 137 }
 138
 139 static gchar* image_loader_collection_get_format_name(gpointer)
 140 {
 141         return g_strdup("collection");
 142 }
 143 static gchar** image_loader_collection_get_format_mime_types(gpointer)
 144 {
 145         static const gchar *mime[] = {"image/png", nullptr};
 146         return g_strdupv(const_cast<gchar **>(mime));
 147 }
 148
 149 static gboolean image_loader_collection_close(gpointer, GError **)
 150 {
 151         return TRUE;
 152 }
 153
 154 static void image_loader_collection_abort(gpointer loader)
 155 {
 156         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 157         ld->abort = TRUE;
 158 }
 159
 160 static void image_loader_collection_free(gpointer loader)
 161 {
 162         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 163         if (ld->pixbuf) g_object_unref(ld->pixbuf);
 164         g_free(ld);
 165 }
 166
 167 void image_loader_backend_set_collection(ImageLoaderBackend *funcs)
 168 {
 169         funcs->loader_new = image_loader_collection_new;
 170         funcs->set_size = image_loader_collection_set_size;
 171         funcs->load = image_loader_collection_load;
 172         funcs->write = nullptr;
 173         funcs->get_pixbuf = image_loader_collection_get_pixbuf;
 174         funcs->close = image_loader_collection_close;
 175         funcs->abort = image_loader_collection_abort;
 176         funcs->free = image_loader_collection_free;
 177         funcs->get_format_name = image_loader_collection_get_format_name;
 178         funcs->get_format_mime_types = image_loader_collection_get_format_mime_types;
 179 }
 180
 181 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */