Qt中使用graphicsView旋转QWidget窗口

#include "QParentContentWidget.h" #include <QScrollBar> QParentContentWidget::QParentContentWidget(QWidget *parent) : QWidget(parent) { ui.setupUi(this); resize(1000, 800); this->InitUI(); this->InitDialogData(); } QParentContentWidget::~QParentContentWidget() { //将所有的视图移出Scene中 m_pScene->removeItem(m_pProxyBtnDetails); //按钮详情 m_pScene->removeItem(m_pProxyTitle); //标题栏 m_pScene->removeItem(m_pProxyTips); //错误提示框 m_pScene->removeItem(m_pProxyEdit); //编辑窗口 //删除所有子控件 if (m_pTipsWidget) { delete m_pTipsWidget; m_pTipsWidget = nullptr; } if (m_pTitleWidget) { delete m_pTitleWidget; m_pTitleWidget = nullptr; } if (m_pEditWidget) { delete m_pEditWidget; m_pEditWidget = nullptr; } if (m_btnDetails) { delete m_btnDetails; m_btnDetails = nullptr; } delete m_pScene; //删除视图 } void QParentContentWidget::OnBnClickedDetails() { m_pTipsWidget->show(); } void QParentContentWidget::MsgReceived_TitleWidget_ExitWidget() { //处理关闭窗口消息 } void QParentContentWidget::MsgReceived_TipsWidget_ClickOK() { if (m_enumWidgetStyle == WidgetStyle_Horizontal) { //窗口即将旋转为：垂直模式 m_enumWidgetStyle = WidgetStyle_Vertical; } else { //窗口即将旋转为：水平模式 m_enumWidgetStyle = WidgetStyle_Horizontal; } this->ChangeScreenRotationStyle(true); //进行窗口旋转 } void QParentContentWidget::InitUI() { int nWidgetW = this->rect().width(); int nWidgetH = this->rect().height(); ui.graphicsView->setGeometry(0, 0, nWidgetW, nWidgetH); ui.graphicsView->setFixedSize(nWidgetW, nWidgetH); //禁用滚动条 ui.graphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); ui.graphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); ui.graphicsView->horizontalScrollBar()->blockSignals(true); ui.graphicsView->verticalScrollBar()->blockSignals(true); } void QParentContentWidget::InitDialogData() { m_enumWidgetStyle = WidgetStyle_Horizontal; //创建，标题窗口 m_pTitleWidget = new QChildWidget_Title; connect(m_pTitleWidget, &QChildWidget_Title::Msg_SendTitleWidget_ExitWidget, this, &QParentContentWidget::MsgReceived_TitleWidget_ExitWidget); //创建：详情按钮 m_btnDetails = new QPushButton; m_btnDetails->setAttribute(Qt::WA_TranslucentBackground);//特别注意这句 m_btnDetails->setText(QStringLiteral("旋转")); m_btnDetails->setStyleSheet("QPushButton{border:none;color:#333333;background-color:#FFD700;}"); connect(m_btnDetails, &QPushButton::clicked, this, &QParentContentWidget::OnBnClickedDetails); //创建：提示窗口 m_pTipsWidget = new QChildWidget_Tips; connect(m_pTipsWidget, &QChildWidget_Tips::Msg_SendTipsWidget_ClickOK, this, &QParentContentWidget::MsgReceived_TipsWidget_ClickOK); m_pTipsWidget->hide(); //创建：编辑内容窗口 m_pEditWidget = new QChildWidget_Edit; m_pEditWidget->show(); //创建视图 QSize sizeView = ui.graphicsView->size(); m_pScene = new QGraphicsScene(this); m_pScene->setSceneRect(0, 0, sizeView.width(), sizeView.height()); m_pScene->setBackgroundBrush(QColor(255, 0, 0)); ui.graphicsView->setScene(m_pScene); //将所有widget添加到布局中 m_pProxyTitle = m_pScene->addWidget(m_pTitleWidget); //设置：标题栏 m_pProxyBtnDetails = m_pScene->addWidget(m_btnDetails); //设置：按钮详情 m_pProxyTips = m_pScene->addWidget(m_pTipsWidget); //设置：提示窗口 m_pProxyEdit = m_pScene->addWidget(m_pEditWidget); //设置：编辑内容窗口 this->ChangeScreenRotationStyle(false); //默认，不进行角度旋转 } void QParentContentWidget::ChangeScreenRotationStyle(bool bUseRotate) { QSize sizeView = ui.graphicsView->size(); int nNewWidth = 0, nNewHeight = 0; switch (m_enumWidgetStyle) { case WidgetStyle_Horizontal: //水平风格 { if (bUseRotate == true) { ui.graphicsView->rotate(90); } nNewWidth = sizeView.width(); nNewHeight = sizeView.height(); } break; case WidgetStyle_Vertical: //垂直风格 { if (bUseRotate == true) { ui.graphicsView->rotate(-90); } nNewWidth = sizeView.height(); nNewHeight = sizeView.width(); } break; } m_pScene->setSceneRect(0, 0, nNewWidth, nNewHeight);//设置原点和scene大小 //设置：标题栏 m_pProxyTitle->setGeometry(QRectF(0, 0, nNewWidth, 50)); //设置：详情按钮 int nBtnDetailsLeft = nNewWidth - 60 - 40; m_pProxyBtnDetails->setGeometry(QRectF(nBtnDetailsLeft, 100, 60, 60)); //设置：提示窗口（窗口固定大小是：400*200） int nTipsLeft = (nNewWidth - 400) / 2; int nTipsTop = (nNewHeight - 200) / 2; m_pProxyTips->setGeometry(QRectF(nTipsLeft, nTipsTop, 400, 200)); //设置：编辑内容窗口（窗口固定大小是：600*500） int nEditLeft = (nNewWidth - 600) / 2; int nEditTop = (nNewHeight - 500) / 2; m_pProxyEdit->setGeometry(QRectF(nEditLeft, nEditTop, 600, 500)); }