axmol/cocos/ui/UILoadingBar.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
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****************************************************************************/

#ifndef __UILOADINGBAR_H__
#define __UILOADINGBAR_H__

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

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

namespace ui {
    class Scale9Sprite;

/**
 *@brief Visual indicator of progress in some operation.
 * Displays a bar to the user representing how far the operation has progressed.
 *
 */
class CC_GUI_DLL LoadingBar : public Widget
{
    
    DECLARE_CLASS_GUI_INFO
    
public:
    /**
     * Loading bar progress direction.
     */
    enum class Direction
    {
        LEFT,
        RIGHT
    };

    /**
     * Default constructor.
     */
    LoadingBar();
    
    /**
     * Default destructor.
     */
    virtual ~LoadingBar();
    
    /**
     * Create an empty LoadingBar.
     *@return A LoadingBar instance.
     */
    static LoadingBar* create();
    
     
    /**
     * @brief Create a LoadingBar with a texture name and a predefined progress value.
     *
     * @param textureName LoadingBar background texture name.
     * @param percentage A percentage in float.
     * @return A LoadingBar instance.
     */
    static LoadingBar* create(const std::string& textureName, float percentage = 0);
    
    
    /**
     * @brief Create a LoadingBar with a texture name along with its texture type and a predefined progress value.
     *
     * @param textureName LoadingBar background texture name.
     * @param texType LoadingBar background texture type.
     * @param percentage A percentage in float, default value is 0.
     * @return A LoadingBar instance.
     */
    static LoadingBar* create(const std::string& textureName,
                              TextureResType texType,
                              float percentage = 0);
    
    /**
     * Change the progress direction of LoadingBar.
     *
     * @see Direction  `LEFT` means progress left to right, `RIGHT` otherwise.
     * @param direction Direction
     */
    void setDirection(Direction direction);
    
    /**
     * Get the progress direction of LoadingBar.
     *
     * @see Direction  `LEFT` means progress left to right, `RIGHT` otherwise.
     * @return LoadingBar progress direction.
     */
    Direction getDirection()const;
    
    /**
     * Load texture for LoadingBar.
     *
     * @param texture   File name of texture.
     * @param texType   Texture resource type,@see TextureResType.
     */
    void loadTexture(const std::string& texture,TextureResType texType = TextureResType::LOCAL);
    
    /**
     * Changes the progress value of LoadingBar.
     *
     * @param percent   Percent value from 1 to 100.
     */
    void setPercent(float percent);
    
    /**
     * Get the progress value of LoadingBar.
     *
     * @return Progress value from 1 to 100.
     */
    float getPercent() const;
    
    /**
     * Enable scale9 renderer.
     *
     * @param enabled Set to true will use scale9 renderer, false otherwise.
     */
    void setScale9Enabled(bool enabled);
    
    
    /**
     * @brief Query whether LoadingBar is using scale9 renderer or not.
     * @return Whether LoadingBar uses scale9 renderer or not.
     */
    bool isScale9Enabled()const;
    
    /**
     * Set capInsets for LoadingBar.
     * This setting only take effect when enable scale9 renderer.
     * @param capInsets CapInset in `Rect`.
     */
    void setCapInsets(const Rect &capInsets);
    
    
    /**
     * @brief Query LoadingBar's capInsets.
     * @return CapInsets of LoadingBar.
     */
    const Rect& getCapInsets()const;
    
    //override methods.
    virtual void ignoreContentAdaptWithSize(bool ignore) override;
    virtual Size getVirtualRendererSize() const override;
    virtual Node* getVirtualRenderer() override;
    virtual std::string getDescription() const override;
protected:
    virtual void initRenderer() override;
    virtual void onSizeChanged() override;
   
    void setScale9Scale();
    void updateProgressBar();
    void barRendererScaleChangedWithSize();
    
    virtual void adaptRenderers() override;
    
    virtual Widget* createCloneInstance() override;
    virtual void copySpecialProperties(Widget* model) override;
protected:
    Direction _direction;
    float _percent;
    float _totalLength;
    Scale9Sprite* _barRenderer;
    TextureResType _renderBarTexType;
    Size _barRendererTextureSize;
    bool _scale9Enabled;
    bool _prevIgnoreSize;
    Rect _capInsets;
    std::string _textureFile;
    bool _barRendererAdaptDirty;
};

}
// end of ui group
/// @}
NS_CC_END
#endif /* defined(__CocoGUI__LoadingBar__) */