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/*
* Copyright 2010 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#include "NuxCore/NuxCore.h"
#include "ImageSurface.h"
#include "GdkGraphics.h"
#include "NuxCore/Logger.h"
namespace nux
{
namespace
{
logging::Logger logger("nux.image");
}
GdkGraphics::GdkGraphics()
: pixbuf_(0)
{
}
GdkGraphics::GdkGraphics(GdkPixbuf* pixbuf)
: pixbuf_(pixbuf)
{
}
GdkGraphics::GdkGraphics(const char* filename)
: pixbuf_(0)
{
LoadImage(filename);
}
GdkGraphics::~GdkGraphics()
{
if (pixbuf_)
g_object_unref(pixbuf_);
}
bool GdkGraphics::LoadImage(const char* filename)
{
if (pixbuf_)
g_object_unref(pixbuf_);
GError* error = 0;
pixbuf_ = gdk_pixbuf_new_from_file(filename, &error);
if (error)
{
LOG_ERROR(logger) << error->message;
g_error_free(error);
return false;
}
return true;
}
NBitmapData* GdkGraphics::GetBitmap() const
{
if (!pixbuf_)
{
LOG_WARN(logger) << "No pixbuf loaded";
return 0;
}
unsigned int width = gdk_pixbuf_get_width(pixbuf_);
unsigned int height = gdk_pixbuf_get_height(pixbuf_);
int channels = gdk_pixbuf_get_n_channels(pixbuf_);
int src_pitch = gdk_pixbuf_get_rowstride(pixbuf_);
NTextureData* texture = NULL;
if (channels == 4)
{
texture = new NTextureData(BITFMT_R8G8B8A8, width, height, 1);
}
else if (channels == 3)
{
texture = new NTextureData(BITFMT_R8G8B8, width, height, 1);
}
else if (channels == 1)
{
texture = new NTextureData(BITFMT_A8, width, height, 1);
}
else
{
LOG_ERROR(logger) << __func__ << ": Invalid number of channels";
return 0;
}
ImageSurface& image_surface = texture->GetSurface(0);
unsigned char* dest = image_surface.GetPtrRawData();
int dest_pitch = image_surface.GetPitch();
guchar* src = gdk_pixbuf_get_pixels(pixbuf_);
for (unsigned int i = 0; i < height; ++i)
{
Memcpy(dest, src + i*src_pitch, width*channels);
dest += dest_pitch;
}
return texture;
}
}
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