/***********************************************************************************
 *                                                                                 *
 * Voreen - The Volume Rendering Engine                                            *
 *                                                                                 *
 * Copyright (C) 2005-2012 University of Muenster, Germany.                        *
 * Visualization and Computer Graphics Group <http://viscg.uni-muenster.de>        *
 * For a list of authors please refer to the file "CREDITS.txt".                   *
 *                                                                                 *
 * This file is part of the Voreen software package. Voreen is free software:      *
 * you can redistribute it and/or modify it under the terms of the GNU General     *
 * Public License version 2 as published by the Free Software Foundation.          *
 *                                                                                 *
 * Voreen 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 in the file   *
 * "LICENSE.txt" along with this file. If not, see <http://www.gnu.org/licenses/>. *
 *                                                                                 *
 * For non-commercial academic use see the license exception specified in the file *
 * "LICENSE-academic.txt". To get information about commercial licensing please    *
 * contact the authors.                                                            *
 *                                                                                 *
 ***********************************************************************************/

#ifndef VRN_SCALE_H
#define VRN_SCALE_H

#include "voreen/core/processors/imageprocessor.h"

#include "voreen/core/properties/boolproperty.h"
#include "voreen/core/properties/optionproperty.h"


namespace voreen {

/**
 * Performs a scaling.
 */
class VRN_CORE_API ScalingProcessor : public ImageProcessor {
public:
    ScalingProcessor();

    virtual std::string getCategory() const { return "Utility"; }
    virtual std::string getClassName() const { return "ScaleProcessor"; }
    virtual bool isUtility() const { return true; }

    virtual Processor* create() const = 0;

    void process() = 0;

    //Test if a textureContainerChanged on port p with tc would result in a conflict
    virtual bool testSizeOrigin(const RenderPort* p, void* so) const;

protected:

    void applyScalingMatrix(int scalingMode, RenderPort* inport, RenderPort* outport);
    tgt::MouseEvent* transformMouseCoordinates(tgt::MouseEvent* e, int scalingMode, RenderPort* inport, RenderPort* outport) const;

    virtual void onEvent(tgt::Event* e);

    BoolProperty distributeEvents_;

    RenderPort inport_;
};

class VRN_CORE_API SingleScale : public ScalingProcessor {
public:
    SingleScale();

    virtual std::string getCategory() const { return "Utility"; }
    virtual std::string getClassName() const { return "SingleScale"; }
    virtual Processor::CodeState getCodeState() const { return CODE_STATE_STABLE; } ///2.0
    virtual Processor* create() const {return new SingleScale();}

    void process();

    virtual void sizeOriginChanged(RenderPort* p);
    virtual void portResized(RenderPort* p, tgt::ivec2 newsize);
protected:
    virtual void setDescriptions() {
        setDescription("Rescales the input image to the dimensions of the succeeding canvas.");
    }

    virtual void onEvent(tgt::Event* e);

    IntOptionProperty scalingMode_;    ///< What compositing mode should be applied for second outport

    RenderPort outport_;
};
} // namespace voreen

#endif //VRN_SCALE_H
