TabWidgetDemo.zip

#include "customtabwidget.h" #include <QStackedWidget> #include <QVBoxLayout> #include <QHBoxLayout> #include <QMouseEvent> #include <QApplication> #include <QPainter> #include <QPixmap> #include <QMimeData> #include <QDrag> #include <QFrame> #include <QDropEvent> #include <QDebug> #include "customtabbar.h" CustomTabWidget::CustomTabWidget(QWidget *parent) : QWidget(parent) { m_pTabBar = new CustomTabBar(this); QHBoxLayout *pHLayout = new QHBoxLayout; pHLayout->addWidget(m_pTabBar); pHLayout->addStretch(); m_pStackedWidget = new QStackedWidget(this); QVBoxLayout *pVLayout = new QVBoxLayout(this); pVLayout->addLayout(pHLayout); pVLayout->addWidget(m_pStackedWidget); pVLayout->setStretch(1, 1); pVLayout->setMargin(0); pVLayout->setSpacing(0); connect(m_pTabBar, SIGNAL(currentChanged(int)), this, SLOT(setCurrentIndex(int))); setAcceptDrops(true); m_pStackedWidget->setStyleSheet("QStackedWidget{border: 1px solid #000000;}"); } CustomTabWidget::~CustomTabWidget() { } void CustomTabWidget::addTab(QWidget *widget, const QString &strTab) { m_pTabBar->addTab(strTab); m_pStackedWidget->addWidget(widget); widget->setAcceptDrops(true); } void CustomTabWidget::addTab(QWidget *page, const QIcon &icon, const QString &label) { m_pTabBar->addTab(icon, label); m_pStackedWidget->addWidget(page); } void CustomTabWidget::addTabs(CustomTabWidget *pOtherTab) { for (int i = 0; i < pOtherTab->count(); i++) { addTab(pOtherTab->tabWidget(0), pOtherTab->tabText(i)); } } int CustomTabWidget::count() const { return m_pTabBar->count(); } int CustomTabWidget::currentIndex() const { return m_pTabBar->currentIndex(); } QWidget * CustomTabWidget::currentWidget() const { return m_pStackedWidget->currentWidget(); } int CustomTabWidget::insertTab(int index, QWidget *page, const QString &label) { m_pTabBar->insertTab(index, label); return m_pStackedWidget->insertWidget(index, page); } int CustomTabWidget::insertTab(int index, QWidget *page, const QIcon &icon, const QString &label) { m_pTabBar->insertTab(index, icon, label); return m_pStackedWidget->insertWidget(index, page); } void CustomTabWidget::removeTab(int index) { m_pTabBar->removeTab(index); m_pStackedWidget->removeWidget(m_pStackedWidget->widget(index)); //widget is not deleted but simply removed from the stacked layout, causing it to be hidden. if (m_pTabBar->count() == 0) { emit tabIsEmpty(); if (m_bAutoDelete) { hide(); deleteLater(); } } } QString CustomTabWidget::tabText(int index) const { return m_pTabBar->tabText(index); } QWidget * CustomTabWidget::tabWidget(int index) const { return m_pStackedWidget->widget(index); } void CustomTabWidget::setAutoHideTabBar(bool bHide) { m_bAutoHideBar = bHide; } void CustomTabWidget::setCurrentIndex(int index) { m_pStackedWidget->setCurrentIndex(index); emit currentTabChanged(m_pTabBar->tabText(index)); } void CustomTabWidget::setAutoDelete(bool bAuto) { m_bAutoDelete = bAuto; } void CustomTabWidget::mousePressEvent(QMouseEvent *event) { QWidget::mousePressEvent(event); if (event->button() == Qt::LeftButton) m_dragStartPos = event->pos(); } void CustomTabWidget::mouseMoveEvent(QMouseEvent *event) { QWidget::mouseMoveEvent(event); } void CustomTabWidget::paintEvent(QPaintEvent *event) { if (m_bAutoHideBar) { m_pTabBar->setVisible(m_pTabBar->count() > 1); } } void CustomTabWidget::dragEnterEvent(QDragEnterEvent *event) { event->acceptProposedAction(); } void CustomTabWidget::dropEvent(QDropEvent *event) { if (event->mimeData()->hasFormat("application/itemdata")) { QByteArray itemData = event->mimeData()->data("application/itemdata"); QDataStream dataStream(&itemData, QIODevice::ReadOnly); long long llPtrParent; QString strTab; long long llPtrChild; int nTabIndex; dataStream >> llPtrParent >> strTab >> llPtrChild >> nTabIndex; CustomTabWidget *tabWidgetFrom = (CustomTabWidget *)llPtrParent; QWidget *child = (QWidget *)llPtrChild; if (child) { addTab(child, strTab); event->acceptProposedAction(); } } else { event->ignore(); } }