skia2/include/views/SkImageView.h

/*
 * Copyright 2006 The Android Open Source Project
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */


#ifndef SkImageView_DEFINED
#define SkImageView_DEFINED

#include "SkView.h"
#include "SkString.h"

class SkAnimator;
class SkBitmap;
class SkMatrix;

class SkImageView : public SkView {
public:
            SkImageView();
    virtual ~SkImageView();

    void    getUri(SkString*) const;
    void    setUri(const char []);
    void    setUri(const SkString&);
    

    enum ScaleType {
        kMatrix_ScaleType,
        kFitXY_ScaleType,
        kFitStart_ScaleType,
        kFitCenter_ScaleType,
        kFitEnd_ScaleType
    };
    ScaleType   getScaleType() const { return (ScaleType)fScaleType; }
    void        setScaleType(ScaleType);
    
    bool    getImageMatrix(SkMatrix*) const;
    void    setImageMatrix(const SkMatrix*);

protected:
    // overrides
    virtual bool    onEvent(const SkEvent&);
    virtual void    onDraw(SkCanvas*);
    virtual void    onInflate(const SkDOM&, const SkDOMNode*);
    
private:
    SkString    fUri;
    SkMatrix*   fMatrix;    // null or copy of caller's matrix ,,,,,
    union {
        SkAnimator* fAnim;
        SkBitmap* fBitmap;
    } fData;
    uint8_t     fScaleType;
    SkBool8     fDataIsAnim;    // as opposed to bitmap
    SkBool8     fUriIsValid;
    
    void    onUriChange();
    bool    getDataBounds(SkRect* bounds);
    bool    freeData();
    bool    ensureUriIsLoaded();

    typedef SkView INHERITED;
};

#endif