src/image-load-gdk.cc

   1 /*
   2  * Copyright (C) 2004 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: Vladimir Nadvornik
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "image-load-gdk.h"
  23
  24 #include <gdk-pixbuf/gdk-pixbuf.h>
  25 #include <glib-object.h>
  26 #include <glib.h>
  27
  28 #include "filedata.h"
  29 #include "image-load.h"
  30
  31
  32 static gchar* image_loader_gdk_get_format_name(gpointer loader)
  33 {
  34         GdkPixbufFormat *format;
  35
  36         format = gdk_pixbuf_loader_get_format(GDK_PIXBUF_LOADER(loader));
  37         if (format)
  38                 {
  39                 return gdk_pixbuf_format_get_name(format);
  40                 }
  41
  42         return nullptr;
  43 }
  44
  45 static gchar** image_loader_gdk_get_format_mime_types(gpointer loader)
  46 {
  47         return gdk_pixbuf_format_get_mime_types(gdk_pixbuf_loader_get_format(GDK_PIXBUF_LOADER(loader)));
  48 }
  49
  50 static gpointer image_loader_gdk_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
  51 {
  52         auto il = static_cast<ImageLoader *>(data);
  53         GdkPixbufLoader *loader;
  54
  55         /** @FIXME gdk-pixbuf-loader does not recognize .xbm files unless
  56          * the mime type is given. There should be a general case */
  57         if (g_ascii_strncasecmp(il->fd->extension, ".xbm", 4) == 0)
  58                 {
  59                 loader = gdk_pixbuf_loader_new_with_mime_type("image/x-xbitmap", nullptr);
  60                 }
  61         else
  62                 {
  63                 loader = gdk_pixbuf_loader_new();
  64                 }
  65
  66         g_signal_connect(G_OBJECT(loader), "area_updated", G_CALLBACK(area_updated_cb), data);
  67         g_signal_connect(G_OBJECT(loader), "size_prepared", G_CALLBACK(size_cb), data);
  68         g_signal_connect(G_OBJECT(loader), "area_prepared", G_CALLBACK(area_prepared_cb), data);
  69         return loader;
  70 }
  71
  72 static void image_loader_gdk_abort(gpointer)
  73 {
  74 }
  75
  76 static void image_loader_gdk_free(gpointer loader)
  77 {
  78         g_object_unref(G_OBJECT(loader));
  79 }
  80
  81 void image_loader_backend_set_default(ImageLoaderBackend *funcs)
  82 {
  83         funcs->loader_new = image_loader_gdk_new;
  84         funcs->set_size = reinterpret_cast<ImageLoaderBackendFuncSetSize>(gdk_pixbuf_loader_set_size);
  85         funcs->load = nullptr;
  86         funcs->write = reinterpret_cast<ImageLoaderBackendFuncWrite>(gdk_pixbuf_loader_write);
  87         funcs->get_pixbuf = reinterpret_cast<ImageLoaderBackendFuncGetPixbuf>(gdk_pixbuf_loader_get_pixbuf);
  88         funcs->close = reinterpret_cast<ImageLoaderBackendFuncClose>(gdk_pixbuf_loader_close);
  89         funcs->abort = image_loader_gdk_abort;
  90         funcs->free = image_loader_gdk_free;
  91
  92         funcs->get_format_name = image_loader_gdk_get_format_name;
  93         funcs->get_format_mime_types = image_loader_gdk_get_format_mime_types;
  94 }
  95
  96
  97 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */