include/graphics/SkCornerPathEffect.h

/* include/graphics/SkCornerPathEffect.h
**
** Copyright 2006, Google Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License"); 
** you may not use this file except in compliance with the License. 
** You may obtain a copy of the License at 
**
**     http://www.apache.org/licenses/LICENSE-2.0 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/

#ifndef SkCornerPathEffect_DEFINED
#define SkCornerPathEffect_DEFINED

#include "SkPathEffect.h"

/** \class SkCornerPathEffect

    SkCornerPathEffect is a subclass of SkPathEffect that can turn sharp corners
    into various treatments (e.g. rounded corners)
*/
class SkCornerPathEffect : public SkPathEffect {
public:
    /** radius must be > 0 to have an effect. It specifies the distance from each corner
        that should be "rounded".
    */
    SkCornerPathEffect(SkScalar radius);
    virtual ~SkCornerPathEffect();

    // overrides for SkPathEffect
    //  This method is not exported to java.
    virtual bool filterPath(SkPath* dst, const SkPath& src, SkScalar* width);

    // overrides for SkFlattenable
    //  This method is not exported to java.
    virtual Factory getFactory();
    //  This method is not exported to java.
    virtual void flatten(SkWBuffer&);

protected:
    SkCornerPathEffect(SkRBuffer&);

private:
    SkScalar    fRadius;

    static SkFlattenable* CreateProc(SkRBuffer&);
    
    // illegal
    SkCornerPathEffect(const SkCornerPathEffect&);
    SkCornerPathEffect& operator=(const SkCornerPathEffect&);
    
    typedef SkPathEffect INHERITED;
};

#endif