src/image-load-svgz.cc

   1 /*
   2  * Copyright (C) 2019 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-svgz.h"
  22
  23 #include <gdk-pixbuf/gdk-pixbuf.h>
  24 #include <glib-object.h>
  25 #include <glib.h>
  26
  27 #include "image-load.h"
  28
  29 namespace
  30 {
  31
  32 gchar* image_loader_svgz_get_format_name(gpointer)
  33 {
  34         return g_strdup("svg");
  35
  36 }
  37
  38 gchar** image_loader_svgz_get_format_mime_types(gpointer)
  39 {
  40         static const gchar *mime[] = {"image/svg", nullptr};
  41         return g_strdupv(const_cast<gchar **>(mime));
  42 }
  43
  44 gpointer image_loader_svgz_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
  45 {
  46         GError *error = nullptr;
  47
  48         GdkPixbufLoader *loader = gdk_pixbuf_loader_new_with_mime_type("image/svg", &error);
  49         if (error)
  50                 {
  51                 g_error_free(error);
  52                 return nullptr;
  53                 }
  54
  55         g_signal_connect(G_OBJECT(loader), "area_updated", G_CALLBACK(area_updated_cb), data);
  56         g_signal_connect(G_OBJECT(loader), "size_prepared", G_CALLBACK(size_cb), data);
  57         g_signal_connect(G_OBJECT(loader), "area_prepared", G_CALLBACK(area_prepared_cb), data);
  58         return loader;
  59 }
  60
  61 gboolean image_loader_svgz_write(gpointer loader, const guchar *buf, gsize &chunk_size, gsize, GError **error)
  62 {
  63         return gdk_pixbuf_loader_write(GDK_PIXBUF_LOADER(loader), buf, chunk_size, error);
  64 }
  65
  66 void image_loader_svgz_abort(gpointer)
  67 {
  68 }
  69
  70 void image_loader_svgz_free(gpointer loader)
  71 {
  72         g_object_unref(G_OBJECT(loader));
  73 }
  74
  75 } // namespace
  76
  77 void image_loader_backend_set_svgz(ImageLoaderBackend *funcs)
  78 {
  79         funcs->loader_new = image_loader_svgz_new;
  80         funcs->set_size = reinterpret_cast<ImageLoaderBackendFuncSetSize>(gdk_pixbuf_loader_set_size);
  81         funcs->write = image_loader_svgz_write;
  82         funcs->get_pixbuf = reinterpret_cast<ImageLoaderBackendFuncGetPixbuf>(gdk_pixbuf_loader_get_pixbuf);
  83         funcs->close = reinterpret_cast<ImageLoaderBackendFuncClose>(gdk_pixbuf_loader_close);
  84         funcs->abort = image_loader_svgz_abort;
  85         funcs->free = image_loader_svgz_free;
  86
  87         funcs->get_format_name = image_loader_svgz_get_format_name;
  88         funcs->get_format_mime_types = image_loader_svgz_get_format_mime_types;
  89 }
  90
  91 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */