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#ifndef MODULE_BITMAP_BITMAP_FILTER_SIMPLE_H
#define MODULE_BITMAP_BITMAP_FILTER_SIMPLE_H
// K-3D
// Copyright (c) 1995-2004, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\author Anders Dahnielson (anders@dahnielson.com)
*/
#include <k3dsdk/bitmap_filter.h>
#include <k3dsdk/object.h>
#include <k3dsdk/persistence.h>
namespace libk3dbitmap
{
class bitmap_filter_simple :
public k3d::bitmap_filter<k3d::persistent<k3d::object> >
{
typedef k3d::bitmap_filter<k3d::persistent<k3d::object> > base;
public:
bitmap_filter_simple(k3d::idocument& Document) :
base(Document)
{
m_input.changed_signal().connect(SigC::slot(*this, &bitmap_filter_simple::on_reset_bitmap));
m_output.need_data_signal().connect(SigC::slot(*this, &bitmap_filter_simple::on_create_bitmap));
}
void on_reset_bitmap()
{
m_output.reset();
}
k3d::bitmap* on_create_bitmap()
{
// If we don't have any input bitmap, we're done ...
const k3d::bitmap* const input = m_input.property_value();
if(!input)
return 0;
// Update values
on_value_change();
// Otherwise, we make a copy of the input bitmap and modify the copy ...
k3d::bitmap* const output = new k3d::bitmap(*input);
for (k3d::bitmap::iterator O = output->begin(); O != output->end(); ++O)
{
k3d::pixel I = *O;
on_filter(I, *O);
}
return output;
}
virtual void on_value_change() = 0;
virtual void on_filter(const k3d::pixel& I, k3d::pixel& O) = 0;
};
} // namespace libk3dbitmap
#endif // !MODULE_BITMAP_BITMAP_FILTER_SIMPLE_H
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