nr-filter-component-transfer.h

#ifndef __NR_FILTER_COMPONENT_TRANSFER_H__
#define __NR_FILTER_COMPONENT_TRANSFER_H__

/*
 * feComponentTransfer filter primitive renderer
 *
 * Authors:
 *   Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
 *
 * Copyright (C) 2007 authors
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include "display/nr-filter-primitive.h"
#include "display/nr-filter-slot.h"
#include "display/nr-filter-units.h"
#include <vector>

namespace Inkscape {
namespace Filters {

enum FilterComponentTransferType {
    COMPONENTTRANSFER_TYPE_IDENTITY,
    COMPONENTTRANSFER_TYPE_TABLE,
    COMPONENTTRANSFER_TYPE_DISCRETE,
    COMPONENTTRANSFER_TYPE_LINEAR,
    COMPONENTTRANSFER_TYPE_GAMMA,
    COMPONENTTRANSFER_TYPE_ERROR
};

class FilterComponentTransfer : public FilterPrimitive {
public:
    FilterComponentTransfer();
    static FilterPrimitive *create();
    virtual ~FilterComponentTransfer();

    virtual int render(FilterSlot &slot, FilterUnits const &units);
    virtual void area_enlarge(NRRectL &area, Geom::Matrix const &trans);

    FilterComponentTransferType type[4];
    std::vector<gdouble> tableValues[4];
    double slope[4];
    double intercept[4];
    double amplitude[4];
    double exponent[4];
    double offset[4];
};

} /* namespace Filters */
} /* namespace Inkscape */

#endif /* __NR_FILTER_COMPONENT_TRANSFER_H__ */
/*
  Local Variables:
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  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
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