axmol/cocos/ui/UIImageView.h

/****************************************************************************
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#ifndef __UIIMAGEVIEW_H__
#define __UIIMAGEVIEW_H__

#include "ui/UIWidget.h"
#include "ui/GUIExport.h"

/**
 * @addtogroup ui
 * @{
 */
NS_CC_BEGIN

namespace ui {
    class Scale9Sprite;
/**
 * @brief A widget to display images.
 */
class CC_GUI_DLL ImageView : public Widget
{
    
    DECLARE_CLASS_GUI_INFO
    
public:
    /**
     * Default constructor
     */
    ImageView();

    /**
     * Default destructor
     */
    virtual ~ImageView();

    /**
     * Create a empty ImageView.
     */
    static ImageView* create();
    
    /**
     * Create a  imageview  with a image name.
     *
     * @param imageFileName   file name of texture.
     * @param texType    @see `Widget::TextureResType`
     * @return A ImageView instance.
     */
    static ImageView* create(const std::string& imageFileName, TextureResType texType = TextureResType::LOCAL);
    

    /**
     * Load texture for imageview.
     *
     * @param fileName   file name of texture.
     * @param texType    @see `Widget::TextureResType`
     */
    void loadTexture(const std::string& fileName,TextureResType texType = TextureResType::LOCAL);

    /**
     * Updates the texture rect of the ImageView in points.
     * It will call setTextureRect:rotated:untrimmedSize with rotated = NO, and utrimmedSize = rect.size.
     */
    void setTextureRect(const Rect& rect);

    /**
     * Enable scale9 renderer.
     *
     * @param enable Set to true will use scale9 renderer, false otherwise.
     */
    void setScale9Enabled(bool able);

    /**
     * Query whether button is using scale9 renderer or not.
     *@return whether button use scale9 renderer or not.
     */
    bool isScale9Enabled()const;

    /**
     * Sets capInsets for imageview.
     * The capInsets affects the ImageView's renderer only if `setScale9Enabled(true)` is called.
     *
     * @param capInsets    capinsets for imageview
     */
    void setCapInsets(const Rect &capInsets);

    /**
     * Get ImageView's capInsets size.
     * @return Query capInsets size in Rect
     * @see `setCapInsets(const Rect&)`
     */
    const Rect& getCapInsets()const;

    //override methods.
    virtual void ignoreContentAdaptWithSize(bool ignore) override;
    virtual std::string getDescription() const override;
    virtual Size getVirtualRendererSize() const override;
    virtual Node* getVirtualRenderer() override;
    
CC_CONSTRUCTOR_ACCESS:
    //initializes state of widget.
    virtual bool init() override;
    virtual bool init(const std::string& imageFileName, TextureResType texType = TextureResType::LOCAL);

protected:
    virtual void initRenderer() override;
    virtual void onSizeChanged() override;
    
    virtual void adaptRenderers() override;
    
    void imageTextureScaleChangedWithSize();
    virtual Widget* createCloneInstance() override;
    virtual void copySpecialProperties(Widget* model) override;
protected:
    bool _scale9Enabled;
    bool _prevIgnoreSize;
    Rect _capInsets;
    Scale9Sprite* _imageRenderer;
    std::string _textureFile;
    TextureResType _imageTexType;
    Size _imageTextureSize;
    bool _imageRendererAdaptDirty;
};

}

NS_CC_END
// end of ui group
/// @}

#endif /* defined(__CocoGUI__ImageView__) */