axmol/cocos/gui/UILayout.h

/****************************************************************************
 Copyright (c) 2013 cocos2d-x.org
 
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 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 all copies or substantial portions of the Software.
 
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 THE SOFTWARE.
 ****************************************************************************/

#ifndef __LAYOUT_H__
#define __LAYOUT_H__

#include "gui/UIWidget.h"

namespace gui {

typedef enum
{
    LAYOUT_COLOR_NONE,
    LAYOUT_COLOR_SOLID,
    LAYOUT_COLOR_GRADIENT
}LayoutBackGroundColorType;

typedef enum
{
    LAYOUT_ABSOLUTE,
    LAYOUT_LINEAR_VERTICAL,
    LAYOUT_LINEAR_HORIZONTAL,
    LAYOUT_RELATIVE
}LayoutType;

class UILayout : public UIWidget
{
public:
    /**
     * Default constructor
     * @js ctor
     */
    UILayout();
    
    /**
     * Default destructor
     * @js NA
     * @lua NA
     */
    virtual ~UILayout();
    
    /**
     * Allocates and initializes a layout.
     */
    static UILayout* create();
    
    //override "hitTest" method of widget.
    virtual bool hitTest(const cocos2d::Point &pt) override;
    
    //background
    /**
     * Sets a background image for layout
     *
     * @param fileName image file path.
     *
     * @param texType @see TextureResType. UI_TEX_TYPE_LOCAL means local file, UI_TEX_TYPE_PLIST means sprite frame.
     */
    void setBackGroundImage(const char* fileName,TextureResType texType = UI_TEX_TYPE_LOCAL);
    
    /**
     * Sets a background image capinsets for layout, if the background image is a scale9 render.
     *
     * @param capinsets of background image.
     *
     */
    void setBackGroundImageCapInsets(const cocos2d::Rect& capInsets);
    
    /**
     * Sets Color Type for layout.
     *
     * @param type   @see LayoutBackGroundColorType.
     */
    void setBackGroundColorType(LayoutBackGroundColorType type);
    
    /**
     * Sets background iamge use scale9 renderer.
     *
     * @param enabled   true that use scale9 renderer, false otherwise.
     */
    void setBackGroundImageScale9Enabled(bool enabled);
    
    /**
     * Sets background color for layout, if color type is LAYOUT_COLOR_SOLID
     *
     * @param color
     */
    void setBackGroundColor(const cocos2d::Color3B &color);
    
    /**
     * Sets background color for layout, if color type is LAYOUT_COLOR_GRADIENT
     *
     * @param start color
     *
     * @param end color
     */
    void setBackGroundColor(const cocos2d::Color3B &startColor, const cocos2d::Color3B &endColor);
    
    /**
     * Sets background opacity layout.
     *
     * @param opacity
     */
    void setBackGroundColorOpacity(int opacity);
    
    /**
     * Sets background color vector for layout, if color type is LAYOUT_COLOR_GRADIENT
     *
     * @param vector
     */
    void setBackGroundColorVector(const cocos2d::Point &vector);
    
    //override "setColor" method of widget.
    virtual void setColor(const cocos2d::Color3B &color) override;
    
    //override "setOpacity" method of widget.
    virtual void setOpacity(int opacity) override;
    
    /**
     * Remove the background image of layout.
     */
    void removeBackGroundImage();
    
    /**
     * Gets background image texture size.
     *
     * @return background image texture size.
     */
    const cocos2d::Size& getBackGroundImageTextureSize() const;
    
    /**
     * Changes if layout can clip it's content and child.
     *
     * If you really need this, please enable it. But it would reduce the rendering efficiency. 
     *
     * @param clipping enabled.
     */
    virtual void setClippingEnabled(bool enabled);
    
    /**
     * Gets if layout is clipping enabled.
     *
     * @return if layout is clipping enabled.
     */
    virtual bool isClippingEnabled();
    
    /**
     * Gets the content size of widget.
     *
     * Content size is widget's texture size.
     */
    virtual const cocos2d::Size& getContentSize() const override;
    
    /**
     * Returns the "class name" of widget.
     */
    virtual const char* getDescription() const override;
    
    /**
     * Sets LayoutType.
     *
     * @see LayoutType
     *
     * @param LayoutType
     */
    virtual void setLayoutType(LayoutType type);
    
    /**
     * Gets LayoutType.
     *
     * @see LayoutType
     *
     * @return LayoutType
     */
    virtual LayoutType getLayoutType() const;
    
    virtual void doLayout();
    
    /**
     * Adds a child to the container.
     *
     * @param child A child widget
     */
    virtual bool addChild(UIWidget* child) override;
    
protected:
    //override "init" method of widget.
    virtual bool init() override;
    
    //override "initRenderer" method of widget.
    virtual void initRenderer() override;
    
    //override "onSizeChanged" method of widget.
    virtual void onSizeChanged() override;
    
    //init background image renderer.
    void addBackGroundImage();
    
    void supplyTheLayoutParameterLackToChild(UIWidget* child);
    virtual UIWidget* createCloneInstance() override;
    virtual void copySpecialProperties(UIWidget* model) override;
    virtual void copyClonedWidgetChildren(UIWidget* model) override;
protected:
    bool _clippingEnabled;
    
    //background
    bool _backGroundScale9Enabled;
    cocos2d::Node* _backGroundImage;
    std::string _backGroundImageFileName;
    cocos2d::Rect _backGroundImageCapInsets;
    LayoutBackGroundColorType _colorType;
    TextureResType _bgImageTexType;
    cocos2d::LayerColor* _colorRender;
    cocos2d::LayerGradient* _gradientRender;
    cocos2d::Color3B _cColor;
    cocos2d::Color3B _gStartColor;
    cocos2d::Color3B _gEndColor;
    cocos2d::Point _alongVector;
    int _cOpacity;
    cocos2d::Size _backGroundImageTextureSize;
    LayoutType _layoutType;
};
/**
 *  @js NA
 *  @lua NA
 */
class UIRectClippingNode : public cocos2d::ClippingNode
{
public:
    virtual ~UIRectClippingNode();
    virtual bool init();
    static UIRectClippingNode* create();
    void setClippingSize(const cocos2d::Size& size);
    void setClippingEnabled(bool enabled);
    virtual void visit();
    void setEnabled(bool enabled);
    bool isEnabled() const;
protected:
    cocos2d::DrawNode* _innerStencil;
    bool _enabled;
private:
    UIRectClippingNode();
    cocos2d::Point rect[4];
    cocos2d::Size _clippingSize;
    bool _clippingEnabled;
};

}

#endif /* defined(__Layout__) */