src/animator/SkDrawMatrix.h

/* libs/graphics/animator/SkDrawMatrix.h
**
** Copyright 2006, The Android Open Source Project
**
** 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 SkDrawMatrix_DEFINED
#define SkDrawMatrix_DEFINED

#include "SkDrawable.h"
#include "SkMatrix.h"
#include "SkMemberInfo.h"
#include "SkIntArray.h"

class SkMatrixPart;

class SkDrawMatrix : public SkDrawable {
    DECLARE_DRAW_MEMBER_INFO(Matrix);
    SkDrawMatrix();
    virtual ~SkDrawMatrix();
    virtual bool add(SkAnimateMaker& , SkDisplayable* child);
    virtual bool childrenNeedDisposing() const;
    virtual void dirty();
    virtual bool draw(SkAnimateMaker& );
#ifdef SK_DUMP_ENABLED
    virtual void dump(SkAnimateMaker* );
#endif
    SkMatrix& getMatrix();
    virtual bool getProperty(int index, SkScriptValue* value) const;
    virtual void initialize();
    virtual void onEndElement(SkAnimateMaker& );
    virtual void setChildHasID();
    virtual bool setProperty(int index, SkScriptValue& );

    void concat(SkMatrix& inMatrix) {
        fConcat.preConcat(inMatrix);
    }

    virtual SkDisplayable* deepCopy(SkAnimateMaker* );


    void rotate(SkScalar degrees, SkPoint& center) {
        fMatrix.preRotate(degrees, center.fX, center.fY);
    }

    void set(SkMatrix& src) {
        fMatrix.preConcat(src);
    }

    void scale(SkScalar scaleX, SkScalar scaleY, SkPoint& center) {
        fMatrix.preScale(scaleX, scaleY, center.fX, center.fY);
    }

    void skew(SkScalar skewX, SkScalar skewY, SkPoint& center) {
        fMatrix.preSkew(skewX, skewY, center.fX, center.fY);
    }

    void translate(SkScalar x, SkScalar y) {
        fMatrix.preTranslate(x, y);
    }
private:
    SkTDScalarArray matrix;
    SkMatrix fConcat;
    SkMatrix fMatrix;
    SkTDMatrixPartArray fParts;
    SkBool8 fChildHasID;
    SkBool8 fDirty;
    typedef SkDrawable INHERITED;
};

#endif // SkDrawMatrix_DEFINED