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 "image-load-collection.h"
  22
  23 #include <unistd.h>
  24
  25 #include <cstdio>
  26
  27 #include <gdk-pixbuf/gdk-pixbuf.h>
  28 #include <glib-object.h>
  29 #include <glib.h>
  30
  31 #include "cache.h"
  32 #include "filedata.h"
  33 #include "image-load.h"
  34 #include "misc.h"
  35 #include "options.h"
  36 #include "ui-fileops.h"
  37
  38 struct ImageLoaderCOLLECTION {
  39         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  40         ImageLoaderBackendCbSize size_cb;
  41         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  42         gpointer data;
  43         GdkPixbuf *pixbuf;
  44         guint requested_width;
  45         guint requested_height;
  46         gboolean abort;
  47 };
  48
  49 static gboolean image_loader_collection_load(gpointer loader, const guchar *, gsize, GError **)
  50 {
  51         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
  52         auto il = static_cast<ImageLoader *>(ld->data);
  53
  54         #define LINE_LENGTH 1000
  55
  56         gboolean ret = FALSE;
  57         gchar *randname;
  58         gchar *cmd_line;
  59         FILE *fp = nullptr;
  60         gint line_count = 0;
  61         GString *file_names = g_string_new(nullptr);
  62         gchar line[LINE_LENGTH];
  63         gchar **split_line = nullptr;
  64         gchar *cache_found;
  65         gchar *pathl;
  66
  67         if (runcmd("which montage >/dev/null 2>&1") == 0)
  68                 {
  69                 pathl = path_from_utf8(il->fd->path);
  70                 fp = fopen(pathl, "r");
  71                 g_free(pathl);
  72                 if (fp)
  73                         {
  74                         while(fgets(line, LINE_LENGTH, fp) && line_count < options->thumbnails.collection_preview)
  75                                 {
  76                                 if (line[0] && line[0] != '#')
  77                                         {
  78                                         split_line = g_strsplit(line, "\"", 4);
  79                                         cache_found = cache_find_location(CACHE_TYPE_THUMB, split_line[1]);
  80                                         if (cache_found)
  81                                                 {
  82                                                 g_string_append_printf(file_names, "\"%s\" ", cache_found);
  83                                                 line_count++;
  84                                                 }
  85                                         g_free(cache_found);
  86                                         }
  87                                         if (split_line)
  88                                                 {
  89                                                 g_strfreev(split_line);
  90                                                 }
  91                                         split_line = nullptr;
  92                                 }
  93                         fclose(fp);
  94
  95                         if (file_names->len > 0)
  96                                 {
  97                                 randname = g_strdup("/tmp/geeqie_collection_XXXXXX.png");
  98                                 g_mkstemp(randname);
  99
 100                                 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);
 101
 102                                 runcmd(cmd_line);
 103                                 ld->pixbuf = gdk_pixbuf_new_from_file(randname, nullptr);
 104                                 if (ld->pixbuf)
 105                                         {
 106                                         ld->area_updated_cb(loader, 0, 0, gdk_pixbuf_get_width(ld->pixbuf), gdk_pixbuf_get_height(ld->pixbuf), ld->data);
 107                                         }
 108
 109                                 unlink(randname);
 110                                 g_free(randname);
 111                                 g_free(cmd_line);
 112
 113                                 ret = TRUE;
 114                                 }
 115
 116                         g_string_free(file_names, TRUE);
 117                         }
 118                 }
 119         return ret;
 120 }
 121
 122 static gpointer image_loader_collection_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
 123 {
 124         auto loader = g_new0(ImageLoaderCOLLECTION, 1);
 125         loader->area_updated_cb = area_updated_cb;
 126         loader->size_cb = size_cb;
 127         loader->area_prepared_cb = area_prepared_cb;
 128         loader->data = data;
 129         return loader;
 130 }
 131
 132 static void image_loader_collection_set_size(gpointer loader, int width, int height)
 133 {
 134         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 135         ld->requested_width = width;
 136         ld->requested_height = height;
 137 }
 138
 139 static GdkPixbuf* image_loader_collection_get_pixbuf(gpointer loader)
 140 {
 141         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 142         return ld->pixbuf;
 143 }
 144
 145 static gchar* image_loader_collection_get_format_name(gpointer)
 146 {
 147         return g_strdup("collection");
 148 }
 149 static gchar** image_loader_collection_get_format_mime_types(gpointer)
 150 {
 151         static const gchar *mime[] = {"image/png", nullptr};
 152         return g_strdupv(const_cast<gchar **>(mime));
 153 }
 154
 155 static gboolean image_loader_collection_close(gpointer, GError **)
 156 {
 157         return TRUE;
 158 }
 159
 160 static void image_loader_collection_abort(gpointer loader)
 161 {
 162         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 163         ld->abort = TRUE;
 164 }
 165
 166 static void image_loader_collection_free(gpointer loader)
 167 {
 168         auto ld = static_cast<ImageLoaderCOLLECTION *>(loader);
 169         if (ld->pixbuf) g_object_unref(ld->pixbuf);
 170         g_free(ld);
 171 }
 172
 173 void image_loader_backend_set_collection(ImageLoaderBackend *funcs)
 174 {
 175         funcs->loader_new = image_loader_collection_new;
 176         funcs->set_size = image_loader_collection_set_size;
 177         funcs->load = image_loader_collection_load;
 178         funcs->write = nullptr;
 179         funcs->get_pixbuf = image_loader_collection_get_pixbuf;
 180         funcs->close = image_loader_collection_close;
 181         funcs->abort = image_loader_collection_abort;
 182         funcs->free = image_loader_collection_free;
 183         funcs->get_format_name = image_loader_collection_get_format_name;
 184         funcs->get_format_mime_types = image_loader_collection_get_format_mime_types;
 185 }
 186
 187 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */