TabControl.h

#pragma once
 
#include "Control.h"
#include <CommCtrl.h>
 
namespace sw
{
    enum class TabAlignment {
        Top,    // 顶部
        Bottom, // 底部
        Left,   // 左边
        Right   // 右边
    };
 
    class TabControl : public Control
    {
    private:
        bool _autoSize = true;
 
    public:
        const ReadOnlyProperty<sw::Rect> ContentRect;
 
        const Property<int> SelectedIndex;
 
        const Property<TabAlignment> Alignment;
 
        const Property<bool> MultiLine;
 
        const Property<bool> AutoSize;
 
    public:
        TabControl();
 
        int GetTabCount();
 
        void UpdateTab();
 
        void UpdateTabText(int index);
 
    protected:
        virtual void OnAddedChild(UIElement &element) override;
 
        virtual void OnRemovedChild(UIElement &element) override;
 
        virtual Size MeasureOverride(const Size &availableSize) override;
 
        virtual void ArrangeOverride(const Size &finalSize) override;
 
        virtual bool OnNotified(NMHDR *pNMHDR, LRESULT &result) override;
 
        virtual void OnSelectedIndexChanged();
 
    private:
        void _SetTabAlignment(TabAlignment value);
 
        void _UpdateChildVisible(bool invalidMeasure = true);
 
        int _InsertItem(int index, TCITEMW &item);
 
        bool _SetItem(int index, TCITEMW &item);
 
        bool _DeleteItem(int index);
 
        bool _DeleteAllItems();
 
        void _CalcContentRect(RECT &rect);
 
        void _CalcIdealSize(SIZE &size);
 
        UIElement *_GetSelectedItem();
    };
}