QDockPanel.h

#ifndef QDOCKPANEL_H
#define QDOCKPANEL_H

#include <QWidget>
#include "QDockCommon.h"
#include "QDockPanelComponents.h"
#include "QDockArrows.h"
#include "IAcceptDrop.h"

class QDockManager;
class QDockMaskWidget;
class QDockTabWidget;
class QDockSideButton;

class QDockPanel : public QWidget, IAcceptDrop
{
	Q_OBJECT
public:
	explicit QDockPanel(QDockManager* manager, QWidget* frame);

	QWidget* getContensWidget(){ return contensWidget_; }
	QWidget* resetContensWidget(QWidget* newWidget)
	{
		QWidget* old = contensWidget_;
		contensWidget_ = newWidget;
		resetContensWidgetPosAndSize();

		return old;
	}

	void setId(int id){ id_ = id; }
	int id(){ return id_; }

	DockStatus dockStatus(){ return dockStatus_; }
	bool dockTo(QWidget* target, DockArea area);
	void undock();
	void startDrag();
	void setAutoHide(bool hide);
private:
	void resizeWidget(int curX, int curY);
	void relayout();
	void setDockStatus();
	void setFloatStatus();
	void setTabbedStatus(bool isTabbed, QDockPanel* parentTabPanel);
	void setAutoHideStatus();

private:
	int id_;	//panel ID
	int titleRectHeight_;    // panel窗口的标题栏的高度.
	QWidget* contensWidget_; // panel窗口内的widget.
	int edgeWidth_;         // 边框的宽度.
	QSize floatSize_;
	QDockManager* manager_;
	QDockArrows arrows_;
	DockArea lastMaskArea_;
	QDockMaskWidget* maskWidget_;

	bool isTabbed_;
	QDockPanel* parentTabPanel_;

	DockStatus dockStatus_;
	QWidget* dockTarget_;
	DockArea area_;
	QPoint floatPos_;
	QDockSideButton* autoHideBtn_;


	enum PanelType
	{
		DockPanel,
		TabContainer,
		SplitContainer,
	};

	PanelType panelType_;

	QDockPanelTitle* title_;
	QDockPanelEdgeLeft* leftEdge_;
	QDockPanelEdgeTop* topEdge_;
	QDockPanelEdgeRight* rightEdge_;
	QDockPanelEdgeBottom* bottomEdge_;
	QDockPanelEdgeLeftTop* leftTopEdge_;
	QDockPanelEdgeRightTop* rightTopEdge_;
	QDockPanelEdgeRightBottom* rightBottomEdge_;
	QDockPanelEdgeLeftBottom* leftBottomEdge_;


	bool isLBtnPressed_;
	QPoint oldPos_;
	QPoint pressedPos_;
	IAcceptDrop* lastDragOverPanelOrFrame_;


private:
	void showArrow();
protected:
	void paintEvent(QPaintEvent*);
	void resizeEvent(QResizeEvent* e);
	void resetContensWidgetPosAndSize();

	virtual void dragEnter();

	virtual void dragLeave();

	virtual void drop(QWidget* from, QPoint pos);

	virtual void dragMove(const QPoint& pos);

	friend QDockManager;
	friend QDockPanelTitle;
	friend QDockTabWidget;
};

#endif // QDOCKPANEL_H