仿谷歌浏览器的TabWidget

#include "deftabwidget.h" #include <QPaintEvent> #include <QTabBar> #include <QImage> #include <QPainter> #include <QMenu> #include <QAction> #include "defaction.h" #include "settooltipdlg.h" #include "deftabbar.h" #include "pagewidget.h" #include "DefEnum.h" DefTabWidget::DefTabWidget(QWidget *parent) : QTabWidget(parent) { m_AddTabBtn_Image = QImage("TabImages/add.png"); m_TabListBtn_Image = QImage("TabImages/tab_list.png"); this->setTabBar(new DefTabBar(this)); PageWidget* w1 = new PageWidget(this); PageWidget* w2 = new PageWidget(this); this->addTab(w1,"tab1"); this->addTab(w2,"tab2"); this->setTabsClosable(true); this->setMovable(true); QString style = "QTabBar::tab{width:"+QString("%0").arg(TAB_MAX_WIDTH)+"px;height:"+QString("%0").arg(TAB_HEIGHT)+"px;}" "QTabBar::tab:selected{color:blue;}" ; this->setStyleSheet(style); this->tabBar()->setShape(QTabBar::TriangularNorth); connect(this,SIGNAL(tabCloseRequested(int)),this,SLOT(RemoveSubTabSlot(int))); } DefTabWidget::~DefTabWidget() { } void DefTabWidget::paintEvent(QPaintEvent* event) { QPainter painter(this); if( (HIDE_SINGLE_TAB==0 && tabBar()->count()>=1) || tabBar()->count()>1) //注：条件短路原则; { QRect rectAdd(tabBar()->width(),tabBar()->rect().top(),m_AddTabBtn_Image.width(),m_AddTabBtn_Image.height()); painter.drawImage(rectAdd,m_AddTabBtn_Image); QRect rectTabList(width()-m_TabListBtn_Image.width(),tabBar()->rect().bottom()-m_TabListBtn_Image.height(),m_TabListBtn_Image.width(),m_TabListBtn_Image.height()); painter.drawImage(rectTabList,m_TabListBtn_Image); } QTabWidget::paintEvent(event); } void DefTabWidget::resizeEvent(QResizeEvent * event) { this->ResizeTabBar(); QTabWidget::resizeEvent(event); } void DefTabWidget::mousePressEvent(QMouseEvent * event) { if(event->button()==Qt::LeftButton) { QRect tabRect = tabBar()->rect(); if(event->pos().y()>=tabRect.top() && event->pos().y()<=tabRect.bottom()) { if(event->pos().x()>=tabRect.width() && event->pos().x()<=tabRect.width()+m_AddTabBtn_Image.width()) { PageWidget* pageWidget = new PageWidget(this); this->addTab(pageWidget,"new Tab"); this->ResizeTabBar(); } else if(event->pos().x()>=width()-m_TabListBtn_Image.width()) { QMenu* popupMenu = new QMenu(this); m_ActionList.clear(); int tabCount = tabBar()->count(); for(int i=0;i<tabCount;i++) { QString tabText = tabBar()->tabText(i); DefAction* action = new DefAction(tabText,this); m_ActionList.append(action); popupMenu->addAction(m_ActionList[i]); connect(m_ActionList[i],SIGNAL(triggered()),this,SLOT(SetTabSelectedSlot())); } popupMenu->exec(QCursor::pos()); } } } QTabWidget::mousePressEvent(event); } void DefTabWidget::mouseDoubleClickEvent(QMouseEvent* event) { if(event->button()==Qt::LeftButton) { QRect tabRect = tabBar()->rect(); int posX = event->pos().x(); int posY = event->pos().y(); bool isDBClickOnTab = posX>=tabRect.x() && posX<=tabRect.width() && posY>=tabRect.top() && posY<=tabRect.bottom() ; if(isDBClickOnTab) { SetToolTipDlg dlg(this->currentIndex(),QCursor::pos(),this); dlg.exec(); } } } void DefTabWidget::RemoveSubTabSlot(int index) { if(tabBar()->count()>1) { this->removeTab(index); resize(width(),height()+1); resize(width(),height()-1); } else if(HIDE_SINGLE_TAB==0 && tabBar()->count()==1) { this->removeTab(index); } if(HIDE_SINGLE_TAB && tabBar()->count()==1) { tabBar()->setHidden(true); } } void DefTabWidget::SetTabSelectedSlot() { for(int index=0;index<m_ActionList.count();index++) { if(m_ActionList[index]->IsTriggered()) { this->setCurrentIndex(index); break; } } } void DefTabWidget::ResizeTabBar() { int maxWidth = width()-m_AddTabBtn_Image.width()-m_TabListBtn_Image.width(); int avgWidth = maxWidth/(tabBar()->count()); if(avgWidth>TAB_MAX_WIDTH) avgWidth = TAB_MAX_WIDTH; QString style = "QTabBar::tab{width:"+QString("%0").arg(avgWidth)+"px;height:"+QString("%0").arg(TAB_HEIGHT)+"px;}" "QTabBar::tab:selected{color:blue;}" ; this->setStyleSheet(style); }