57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
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#include "appinit.h"
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#include "qmutex.h"
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#include "qapplication.h"
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#include "qevent.h"
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#include "qwidget.h"
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QScopedPointer<AppInit> AppInit::self;
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AppInit *AppInit::Instance()
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{
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if (self.isNull()) {
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static QMutex mutex;
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QMutexLocker locker(&mutex);
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if (self.isNull()) {
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self.reset(new AppInit);
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}
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}
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return self.data();
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}
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AppInit::AppInit(QObject *parent) : QObject(parent)
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{
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}
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bool AppInit::eventFilter(QObject *watched, QEvent *event)
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{
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QWidget *w = (QWidget *)watched;
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if (!w->property("canMove").toBool()) {
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return QObject::eventFilter(watched, event);
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}
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static QPoint mousePoint;
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static bool mousePressed = false;
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QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
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if (mouseEvent->type() == QEvent::MouseButtonPress) {
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if (mouseEvent->button() == Qt::LeftButton) {
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mousePressed = true;
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mousePoint = mouseEvent->globalPos() - w->pos();
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}
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} else if (mouseEvent->type() == QEvent::MouseButtonRelease) {
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mousePressed = false;
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} else if (mouseEvent->type() == QEvent::MouseMove) {
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if (mousePressed) {
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w->move(mouseEvent->globalPos() - mousePoint);
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return true;
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}
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}
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return QObject::eventFilter(watched, event);
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}
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void AppInit::start()
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{
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qApp->installEventFilter(this);
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}
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