/*

    Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>

    This file is part of the KDE project

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Library General Public

    License as published by the Free Software Foundation; either

    version 2 of the License, or (at your option) any later version.

    This library 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

    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License

    aint with this library; see the file COPYING.LIB.  If not, write to

    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    Boston, MA 02110-1301, USA.

*/

#include "config.h"

#if ENABLE(SVG) && ENABLE(SVG_EXPERIMENTAL_FEATURES)

#include "SVGFEComposite.h"

#include "SVGFEHelpersCg.h"

#import "WKArithmeticFilter.h"

namespace WebCore {

CIFilter* SVGFEComposite::getCIFilter(SVGResourceFilter* svgFilter) const

{

    CIFilter* filter = nil;

    BEGIN_BLOCK_OBJC_EXCEPTIONS;

    switch (operation()) {

    case SVG_FECOMPOSITE_OPERATOR_UNKNOWN:

        return nil;

    case SVG_FECOMPOSITE_OPERATOR_OVER:

        filter = [CIFilter filterWithName:@"CISourceOverCompositing"];

        break;

    case SVG_FECOMPOSITE_OPERATOR_IN:

        filter = [CIFilter filterWithName:@"CISourceInCompositing"];

        break;

    case SVG_FECOMPOSITE_OPERATOR_OUT:

        filter = [CIFilter filterWithName:@"CISourceOutCompositing"];

        break;

    case SVG_FECOMPOSITE_OPERATOR_ATOP:

        filter = [CIFilter filterWithName:@"CISourceAtopCompositing"];

        break;

    case SVG_FECOMPOSITE_OPERATOR_XOR:

        //FIXME: I'm not sure this is right...

        filter = [CIFilter filterWithName:@"CIExclusionBlendMode"];

        break;

    case SVG_FECOMPOSITE_OPERATOR_ARITHMETIC:

        [WKArithmeticFilter class];

        filter = [CIFilter filterWithName:@"WKArithmeticFilter"];

        break;

    }

    [filter setDefaults];

    CIImage* inputImage = svgFilter->inputImage(this);

    CIImage* backgroundImage = svgFilter->imageForName(in2());

    FE_QUARTZ_CHECK_INPUT(inputImage);

    FE_QUARTZ_CHECK_INPUT(backgroundImage);

    [filter setValue:inputImage forKey:@"inputImage"];

    [filter setValue:backgroundImage forKey:@"inputBackgroundImage"];

    //FIXME: this seems ugly

    if (operation() == SVG_FECOMPOSITE_OPERATOR_ARITHMETIC) {

        [filter setValue:[NSNumber numberWithFloat:k1()] forKey:@"inputK1"];

        [filter setValue:[NSNumber numberWithFloat:k2()] forKey:@"inputK2"];

        [filter setValue:[NSNumber numberWithFloat:k3()] forKey:@"inputK3"];

        [filter setValue:[NSNumber numberWithFloat:k4()] forKey:@"inputK4"];

    }

    FE_QUARTZ_OUTPUT_RETURN;

}

}

#endif // ENABLE(SVG) && ENABLE(SVG_EXPERIMENTAL_FEATURES)