scrollpane.h

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#pragma once
 
#include "component.h"
#include "toucharea.h"
#include "typedefine.h"
 
class ColorBlock;
 
class ScrollPane :public Component{
public:
    class TouchController :public TouchArea{
    private:
        float dragThreshold;
        boolean dragging;
        PointF lastPos;
    protected:
        virtual void onClick(TouchScreen::Touch* touch);
        virtual void onDrag(TouchScreen::Touch* t);
    public:
        ScrollPane* sp;
        TouchController(ScrollPane* s);
    };
protected:
    static const int THUMB_COLOR = 0xFF7b8073;
    static const float THUMB_ALPHA;
 
    TouchController* controller;
    Component* content;
    ColorBlock* thumb;
 
    float minX;
    float minY;
    float maxX;
    float maxY;
 
    virtual void createChildren();
    virtual void layout();
public:
    ScrollPane(Component* content);
 
    virtual void destroy();
    void scrollTo(float x, float y);
    Component* Content() {
        return content;
    }
 
    virtual void onClick(float x, float y) {
    }
 
};