Qt-demo高级感无边框窗口、美化基础控件

展示：

代码实现：

// 鼠标按下事件(记录拉伸窗口或移动窗口时的起始坐标（左上角）)void framelessWidget::mousePressEvent(QMouseEvent *event){    if(event->button() == Qt::LeftButton){        mousePressed = true;#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))        lastPos = event->globalPosition().toPoint() - this->frameGeometry().topLeft();#else        lastPos = event->globalPos() - this->frameGeometry().topLeft();#endif    }}// 鼠标移动事件void framelessWidget::mouseMoveEvent(QMouseEvent *event){    if(event->buttons() == Qt::NoButton)        mousePressed = false;    if(!mousePressed){ // 鼠标没按下移动，更新鼠标位置状态        mouseState = 0;        if(!maximized && abs(event->pos().x() - ui->mainWidget->pos().x()) pos().y() - ui->mainWidget->pos().y()) pos().x() - ui->mainWidget->pos().x() - ui->mainWidget->width()) pos().y() - ui->mainWidget->pos().y() - ui->mainWidget->height()) pos().x() / (double)ui->mainWidget->width();                controlWindowScale();#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))                this->move(QPoint(event->globalPosition().x() - ui->mainWidget->width() * wRatio, -30));#else                this->move(QPoint(event->globalPos().x() - ui->mainWidget->width() * wRatio, -30));#endif                lastPos = QPoint(ui->mainWidget->width() * wRatio, event->pos().y());            }            else#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))                this->move(event->globalPosition().toPoint() - lastPos);#else                this->move(event->globalPos() - lastPos);#endif        }        else{#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))            QPoint d = event->globalPosition().toPoint() - frameGeometry().topLeft() - lastPos;#else            QPoint d = event->globalPos() - frameGeometry().topLeft() - lastPos;#endif            if(mouseState & AT_LEFT){                this->move(this->frameGeometry().x() + d.x(), this->frameGeometry().y());                this->resize(this->width() - d.x(), this->height());            }            if(mouseState & AT_RIGHT){                this->resize(this->width() + d.x(), this->height());            }            if(mouseState & AT_TOP){                this->move(this->frameGeometry().x(), this->frameGeometry().y() + d.y());                this->resize(this->width(), this->height() - d.y());            }            if(mouseState & AT_BOTTOM){                this->resize(this->width(), this->height() + d.y());            }        }#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))        lastPos = event->globalPosition().toPoint() - this->frameGeometry().topLeft();#else        lastPos = event->globalPos() - this->frameGeometry().topLeft();#endif    }}// 窗口变化事件void framelessWidget::resizeEvent(QResizeEvent *event){    //Resize border    if(border)        border->resize(ui->mainWidget->size() + QSize(2, 2));    //Resize mask    QPainterPath path;#ifdef Q_OS_WINDOWS    path.addRoundedRect(ui->mainWidget->rect(), cornerRadius - 1, cornerRadius - 1);#else    path.addRect(ui->mainWidget->rect());#endif    QRegion mask(path.toFillPolygon().toPolygon());    ui->mainWidget->setMask(mask);    //Resize all pages//    for(int i = 0; i resize(ui->mainWidget->width() * 0.4 preferWidth ? pageList[i]->preferWidth - 1 : ui->mainWidget->width() * 0.4 - 1, ui->mainWidget->height());//        pageList[i]->resize(pageList[i]->width() + 1, pageList[i]->height());//    }}//点击最大化按钮事件void framelessWidget::controlWindowScale(){#ifdef Q_OS_WINDOWS    if(!maximized){        lastGeometry = this->frameGeometry();      //  windowShadow->setEnabled(false);        ui->verticalLayout->setContentsMargins(0, 0, 0, 0);        border->hide();        QString mainStyle = "QWidget#mainWidget{background-color:rgb(251,251,251) border-radius:0px;}";        ui->mainWidget->setStyleSheet(mainStyle);        this->showMaximized();        maximized = true;        QPainterPath path;        path.addRect(ui->mainWidget->rect());        QRegion mask(path.toFillPolygon().toPolygon());        ui->mainWidget->setMask(mask);    }    else{        ui->verticalLayout->setContentsMargins(30, 30, 30, 30);        this->showNormal();        QString mainStyle = "QWidget#mainWidget{background-color:rgb(251,251,251)" + QString::asprintf(";border-radius:%dpx", cornerRadius) + "}";        ui->mainWidget->setStyleSheet(mainStyle);        QPainterPath path;        path.addRoundedRect(ui->mainWidget->rect(), cornerRadius - 1, cornerRadius - 1);        QRegion mask(path.toFillPolygon().toPolygon());        ui->mainWidget->setMask(mask);        border->show();     //   windowShadow->setEnabled(true);        this->resize(lastGeometry.width(), lastGeometry.height());        this->move(lastGeometry.x(), lastGeometry.y());        maximized = false;    }#endif}

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