YiScrollBarView.h

Go to the documentation of this file.

// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_SCROLL_BAR_VIEW_H_
#define _YI_SCROLL_BAR_VIEW_H_

#include "view/YiSceneView.h"

class CYIScrollBarViewPriv;

class CYIScrollBarView : public CYISceneView
{
    friend class CYIScrollBarViewPriv;

public:

    class Listener
    {
    public:
        Listener() {};
        virtual ~Listener() {};

        virtual void OnScroll(const CYIScrollBarView *pScrollBar, float fPercentage) = 0;

        virtual void OnScrollBegin(const CYIScrollBarView *pScrollBar) = 0;

        virtual void OnScrollEnd  (const CYIScrollBarView *pScrollBar) = 0;
    };

    CYIScrollBarView();
    virtual ~CYIScrollBarView();

        virtual bool Init() override;

    virtual void FocusLost() override;

    void SetThumbPosition(float fNormalizedPosition);

    float GetThumbPosition() const;

    void SetThumbSize(float fPercentage);

    float GetThumbSize() const;

    void     AddListener(CYIScrollBarView::Listener *pListener);

    void     RemoveListener(CYIScrollBarView::Listener *pListener);

    void SetAutoHideTimeout(uint64_t uDelayMs);

    uint64_t GetAutoHideTimeout() const;

    virtual const CYISceneView::AssetRequirement *GetAssetRequirements(uint32_t *pRequirementCount) override;

    CYISignal<float> Scrolled; 
    CYISignal<> ScrolledBegin; 
    CYISignal<> ScrolledEnd; 

protected:
    virtual bool HandleEvent(const std::shared_ptr<CYIEventDispatcher> &pDispatcher, CYIEvent *pEvent) override;

    virtual void UpdateEnd() override;

private:
    CYIScrollBarViewPriv *m_pPriv;

    YI_TYPE_BASES(CYIScrollBarView, CYISceneView)
    YI_DISALLOW_COPY_AND_ASSIGN(CYIScrollBarView)
};

#endif // _YI_SCROLL_BAR_VIEW_H_