57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
#include "maskManager.h"
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#include <QEvent>
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MaskManager* MaskManager::m_instance = nullptr;
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void MaskManager::initialize(QWidget* mainWindow)
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{
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if(!m_instance)
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m_instance = new MaskManager(mainWindow);
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}
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MaskManager* MaskManager::instance()
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{
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Q_ASSERT(m_instance);
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return m_instance;
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}
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MaskManager::MaskManager(QWidget* mainWindow)
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: QObject(mainWindow)
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, m_mainWindow(mainWindow)
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{
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m_maskLayer = new QWidget(m_mainWindow);
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//m_maskLayer->setAttribute(Qt::WA_TransparentForMouseEvents, true);
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m_maskLayer->setStyleSheet("background:rgba(112,128,144,180);");
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m_maskLayer->hide();
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m_mainWindow->installEventFilter(this); //在Qt中，时间过滤会按照install的顺序反向执行，过程中，对于同一类型事件，任何一个过滤器返回true，表示事件被处理，后续过滤器和事件函数不会再被调用
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}
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bool MaskManager::eventFilter(QObject* obj, QEvent* event)
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{
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if(obj == m_mainWindow && event->type() == QEvent::Resize)
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{
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if(m_maskLayer && m_maskLayer->isVisible())
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m_maskLayer->setGeometry(m_mainWindow->rect());
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}
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return QObject::eventFilter(obj, event);
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}
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void MaskManager::showMask(QWidget* requseter)
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{
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if(m_activeRequsets.isEmpty())
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{
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m_maskLayer->setGeometry(m_mainWindow->rect());
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//m_maskLayer->raise(); //显示在最上层，后续打开的同级子窗口依然在其之上
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m_maskLayer->show();
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}
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m_activeRequsets.insert(requseter);
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}
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void MaskManager::hideMask(QWidget* requester)
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{
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m_activeRequsets.remove(requester);
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if(m_activeRequsets.isEmpty())
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m_maskLayer->hide();
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}
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