nmWATI/Include/iPlot/iPlotBase/ZxLayout.h

#pragma once

#include <QSizeF>
#include <QVector>
#include "ZxDynamic.h"
#include "IxSerDes.h"
#include "iPlotBase_global.h"

class ZxRenderItem;

/// 布局器
/// @note 简单起见, 我们暂不支持嵌套布局
class I_PLOTBASE_EXPORT ZxLayout
        : virtual public IxDynObj
        , virtual public IxSerDes
{
    ZX_DECLARE_DYNAMIC

public:

    ZxLayout();
    ZxLayout(const ZxLayout & c);

    virtual void clear();
    virtual ZxLayout* clone() const;

protected:

    /// 布局
    virtual void onLayout();

    /// 应用自动尺寸
    /// @return true表示已处理, false表示交回给Item来处理.
    virtual bool onApplyAutoSize();

    /// 获取建议尺寸
    virtual QSizeF getSizeHint() const;

    virtual void onSerialize(ZxSerializer* ser);
    virtual void onDeserialize(ZxSerializer* ser);

    virtual ZxRenderItem* getOwner() const;
    virtual void setOwner(ZxRenderItem* p);

    virtual void onChildItemAdded(ZxRenderItem* pItem);
    virtual void onChildItemRemoved(ZxRenderItem* pItem);

    ZxRenderItem* m_pOwner;
    friend class ZxRenderItem;
};

/// 层叠布局.
/// 各子图元都拉伸成同样尺寸, 一个叠一个地放在一起.
/// @note 注意和 ZxStackLayer 相区别
class I_PLOTBASE_EXPORT ZxLayerLayout
        : public ZxLayout
{
    ZX_DECLARE_DYNAMIC

public:

    ZxLayerLayout();
    ZxLayerLayout(const ZxLayerLayout& c);
    virtual ZxLayerLayout* clone() const;

protected:

    virtual void onLayout();
    virtual QSizeF getSizeHint() const;
};