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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
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#ifndef QQTFRAMEMOUSELOCKER_H
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#define QQTFRAMEMOUSELOCKER_H
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#include <QObject>
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#include <QWidget>
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/**
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* @brief The QQtFrameMouseLocker class
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* 将鼠标移动轨迹锁定在窗口内部。
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*
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* 使用方法:
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* QWidget* w;//需要锁定鼠标的窗口。
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* w->setMouseTracking(True);//必要
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* //w->setFocusPolicy(Qt::StrongFocus);//不必要设置Focus。
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* QQtFrameMouseLocker* helper = new QQtFrameMouseLocker(parent) ;
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* w->installEventFilter(helper);//一步设置即可。
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* 允许使用这一个句柄为多个窗口安装,各自独立工作,互不干扰。
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*
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* 工作原理:
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* 在鼠标move的时候,截获鼠标消息,将其锁定。
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* 支持所有QWidget,不支持QMainWindow。
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* 支持windows、macOS、Linux。
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*/
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class QQtFrameMouseLocker : public QObject
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{
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Q_OBJECT
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public:
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QQtFrameMouseLocker ( QObject* parent = 0 );
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virtual ~QQtFrameMouseLocker();
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// QObject interface
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public:
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virtual bool eventFilter ( QObject* watched, QEvent* event ) override;
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protected:
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virtual void focusInEvent ( QFocusEvent* event, QWidget* target = 0 );
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virtual void focusOutEvent ( QFocusEvent* event, QWidget* target = 0 );
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virtual void mouseMoveEvent ( QMouseEvent* event, QWidget* target = 0 );
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};
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#endif // QQTFRAMEMOUSELOCKER_H
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