OverlappedWidget.h

#pragma once

#include <QDialog>
#include <QPaintEvent>
#include <QMouseEvent>

class OverlappedWidget : public QDialog
{
	Q_OBJECT

public:
	OverlappedWidget(QWidget *parent);
	~OverlappedWidget();

	enum Action
	{
		None = 0,
		OcrInRegion,
		ClipRegion
	};

	void setAction(Action action);
	void setScreenImage(const QImage& image);
	QRect selectedRegion();
	QImage regionImage(const QRect& region);

protected:
	virtual void paintEvent(QPaintEvent *event);
	virtual void mousePressEvent(QMouseEvent *event);
	virtual void mouseMoveEvent(QMouseEvent *event);
	virtual void mouseReleaseEvent(QMouseEvent *event);
	virtual void keyPressEvent(QKeyEvent *event);

Q_SIGNALS:
	void regionSelected(Action action, const QRect& region);

protected:
	Action m_action;
	QImage m_screenImage;
	QImage m_darkMaskImage;
	QPoint m_pressedPos;
	QPoint m_draggingPos;
	bool m_dragging;
	QRect m_selectedRegion;
};