86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
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#include "framelesswidget2.h"
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#include "qevent.h"
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#include "qdebug.h"
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#ifdef Q_OS_WIN
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#include "windows.h"
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#endif
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FramelessWidget2::FramelessWidget2(QWidget *parent) : QWidget(parent)
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{
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padding = 5;
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this->installEventFilter(this);
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}
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bool FramelessWidget2::eventFilter(QObject *watched, QEvent *event)
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{
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if (watched == this) {
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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() - this->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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this->move(mouseEvent->globalPos() - mousePoint);
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return true;
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}
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}
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}
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return QWidget::eventFilter(watched, event);
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}
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bool FramelessWidget2::nativeEvent(const QByteArray &eventType, void *message, long *result)
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{
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#ifdef Q_OS_WIN
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MSG *msg = (MSG *)message;
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switch (msg->message) {
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case WM_NCHITTEST: {
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QPoint pos = mapFromGlobal(QPoint(LOWORD(msg->lParam), HIWORD(msg->lParam)));
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bool left = pos.x() < padding;
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bool right = pos.x() > width() - padding;
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bool top = pos.y() < padding;
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bool bottom = pos.y() > height() - padding;
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if (left && top) {
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*result = HTTOPLEFT;
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} else if (left && bottom) {
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*result = HTBOTTOMLEFT;
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} else if (right && top) {
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*result = HTTOPRIGHT;
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} else if (right && bottom) {
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*result = HTBOTTOMRIGHT;
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} else if (left) {
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*result = HTLEFT;
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} else if (right) {
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*result = HTRIGHT;
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} else if (top) {
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*result = HTTOP;
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} else if (bottom) {
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*result = HTBOTTOM;
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} else {
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return false;
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}
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return true;
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}
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break;
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default:
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break;
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}
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#endif
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return false;
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}
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#ifdef Q_OS_WIN
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bool FramelessWidget2::winEvent(MSG *message, long *result)
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{
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return nativeEvent("windows_generic_MSG", message, result);
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}
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#endif
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