Qt 窗口叠加透明，上面窗口可写文本和图片，下面窗口可展示图片或播放视频

#include "osdmaneger.h" #include <QTreeWidget> #include <QDebug> #include <QList> #include <QFontDialog> #include <QColorDialog> #if _MSC_VER >= 1600 #pragma execution_character_set("utf-8") #endif OsdManeger::OsdManeger(const QPoint ptMax, QVector<OSD_Type> *pOsdVect, QWidget *parent) : QWidget(parent) { setWindowTitle("OSD管理"); _pOsdVect = pOsdVect; select=-1; int size = _pOsdVect->size(); QPushButton *addBtn = new QPushButton("添加");addBtn->setFixedHeight(30); // 添加按钮 QPushButton *removeBtn = new QPushButton("删除");removeBtn->setFixedHeight(30); // 删除按钮 tree = new QTreeWidget(); // 树 //tree->setHeaderHidden(true); tree->setHeaderLabel("OSD："); // 项 for(int i=0; i<size; i++) { QTreeWidgetItem *item = new QTreeWidgetItem(tree, QStringList(QString(tr("[%1] ").arg(i+1)+_pOsdVect->at(i).content))); item->setData(0,Qt::UserRole,i); } //其他 QLabel *hideLabel = new QLabel("OSD隐藏:"); hideChkbox = new QCheckBox(); hideChkbox->setCheckState(Qt::CheckState::Unchecked); QLabel *xPointLabel = new QLabel("X坐标:"); xPoint = new QSpinBox(); xPoint->setMinimum(0); xPoint->setMaximum(ptMax.x()); xPoint->setFixedHeight(30); QLabel *yPointLabel = new QLabel("Y坐标:"); yPoint = new QSpinBox(); yPoint->setMinimum(0); yPoint->setMaximum(ptMax.y()); yPoint->setFixedHeight(30); QLabel *colorLabel = new QLabel("颜色:"); colorBtn = new QPushButton(); QPalette pal = colorBtn->palette(); pal.setColor(QPalette::Button,Qt::blue); colorBtn->setPalette(pal); colorBtn->setAutoFillBackground(true); colorBtn->setFlat(true); QLabel *fontLabel = new QLabel("字体:"); fontBtn = new QPushButton(); QLabel *contentLabel = new QLabel("内容:"); contentLineEdit = new QLineEdit(); contentLineEdit->setMinimumWidth(200); changeBtn = new QPushButton("更改");changeBtn->setFixedHeight(30); allEnable(false); QGridLayout *fuckLayout = new QGridLayout(); fuckLayout->addWidget(hideLabel,0,0,1,1); fuckLayout->addWidget(hideChkbox,0,1,1,3); fuckLayout->addWidget(xPointLabel,1,0,1,1); fuckLayout->addWidget(xPoint,1,1,1,3); fuckLayout->addWidget(yPointLabel,2,0,1,1); fuckLayout->addWidget(yPoint,2,1,1,3); fuckLayout->addWidget(colorLabel,3,0,1,1); fuckLayout->addWidget(colorBtn,3,1,1,3); fuckLayout->addWidget(fontLabel,4,0,1,1); fuckLayout->addWidget(fontBtn,4,1,1,3); fuckLayout->addWidget(contentLabel,5,0,1,1); fuckLayout->addWidget(contentLineEdit,5,1,1,3); fuckLayout->addWidget(changeBtn,6,3,1,1); // 信号 connect(tree,SIGNAL(itemClicked (QTreeWidgetItem *,int)),this,SLOT(OnTreeWidgetClicked(QTreeWidgetItem *,int))); //connect(tree,SIGNAL(itemPressed (QTreeWidgetItem *,int)),this,SLOT(OnTreeWidgetPressed(QTreeWidgetItem *,int))); //connect(tree,SIGNAL(itemChanged (QTreeWidgetItem *,int)),this,SLOT(OnTreeWidgetItemChanged(QTreeWidgetItem *,int))); connect(addBtn, &QPushButton::clicked, this, &OsdManeger::slotAddBtnclicked); connect(removeBtn, &QPushButton::clicked, this, &OsdManeger::slotRemoveBtnclicked); connect(colorBtn, &QPushButton::clicked, this, &OsdManeger::slotColorBtnclicked); connect(fontBtn, &QPushButton::clicked, this, &OsdManeger::slotFontBtnclicked); connect(changeBtn, &QPushButton::clicked, this, &OsdManeger::slotChangeBtnclicked); // 布局 QHBoxLayout *barlayout = new QHBoxLayout(); barlayout->addWidget(addBtn); barlayout->addWidget(removeBtn); QVBoxLayout *treelayout = new QVBoxLayout(); treelayout->addWidget(tree); treelayout->addLayout(barlayout); mainlayout = new QHBoxLayout(); mainlayout->addLayout(treelayout); mainlayout->addLayout(fuckLayout); setLayout(mainlayout); setFixedSize(600,600); setAttribute(Qt::WA_QuitOnClose,false); // 子窗体随主窗体关闭 } OsdManeger::~OsdManeger() { } void OsdManeger::allEnable(const bool ena) { if(ena) { hideChkbox->setEnabled(true); xPoint->setEnabled(true); yPoint->setEnabled(true); colorBtn->setEnabled(true); fontBtn->setEnabled(true); contentLineEdit->setEnabled(true); changeBtn->setEnabled(true); } else { hideChkbox->setEnabled(false); xPoint->setEnabled(false); yPoint->setEnabled(false); colorBtn->setEnabled(false); fontBtn->setEnabled(false); contentLineEdit->setEnabled(false); changeBtn->setEnabled(false); } } void OsdManeger::update(const int index) { if(index<0) { allEnable(false); return; } allEnable(true); if((*_pOsdVect)[index].bHide) hideChkbox->setCheckState(Qt::CheckState::Checked); else hideChkbox->setCheckState(Qt::CheckState::Unchecked); contentLineEdit->setText((*_pOsdVect)[index].content); xPoint->setValue((*_pOsdVect)[index].pt.x()); yPoint->setValue((*_pOsdVect)[index].pt.y()); currColor = (*_pOsdVect)[index].color; QPalette pal = colorBtn->palette(); pal.setColor(QPalette::Button, currColor); colorBtn->setPalette(pal); currFont = (*_pOsdVect)[index].font; fontBtn->setText(currFont.toString()); } // 选中项目 void OsdManeger::OnTreeWidgetClicked(QTreeWidgetItem *item, int column) { qDebug()<<"OnTreeWidgetClicked "<<item->text(column)<<item->data(column,Qt::UserRole); int index = item->data(column,Qt::UserRole).toInt(); select = index; update(index); // 更新右边区域 } // 添加OSD void OsdManeger::slotAddBtnclicked() { qDebug()<<"slotAddBtnclicked"; OSD_Type osd; osd.invalid=false; osd.bHide=false; osd.color=QColor(Qt::black); osd.content="无内容"; osd.font = QFont("黑体",24); osd.pt=QPoint(0,0); _pOsdVect->push_back(osd); int size = _pOsdVect->size();qDebug()<<"slotAddBtnclicked size: "<<size; QTreeWidgetItem *item = new QTreeWidgetItem(tree, QStringList(QString(tr("[%1] ").arg(size))+osd.content)); item->setData(0,Qt::UserRole,size-1); setChange(); } // 删除OSD void OsdManeger::slotRemoveBtnclicked() { QList<QTreeWidgetItem* > items = tree->selectedItems(); QList<QTreeWidgetItem* >::iterator it; qDebug()<<items.size(); if(items.size()==0) return; it = items.begin(); qDebug()<<"remove:"<<(*it)->data(0,Qt::UserRole); int index = (*it)->data(0,Qt::UserRole).toInt(); (*_pOsdVect)[index].invalid=true; // _pOsdVect->remove(index); // 删除osd tree->clear(); // 清空tree // 重构tree int size = _pOsdVect->size(); if(size==0) { select=-1; } else { for(int i=0; i<size; i++) { QTreeWidgetItem *item = new QTreeWidgetItem(tree, QStringList(QString(tr("[%1] ").arg(i+1)+_pOsdVect->at(i).content))); item->setData(0,Qt::UserRole,i); } select=0; } update(select); setChange(); } // 设置字体 void OsdManeger::slotFontBtnclicked() { bool ok; QFont f = QFontDialog::getFont(&ok, (*_pOsdVect)[select].font); if (ok) { currFont = f; fontBtn->setText(f.toString()); slotChangeBtnclicked(); } } // 设置字体颜色 void OsdManeger::slotColorBtnclicked() { QColor c = QColorDialog::getColor((*_pOsdVect)[select].color); if(c.isValid()) { qDebug()<<c; currColor = c; QPalette pal = colorBtn->palette(); pal.setColor(QPalette::Button, c); colorBtn->setPalette(pal); colorBtn->setAutoFillBackground(true);