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