mirror of
https://invent.kde.org/network/falkon.git
synced 2024-09-22 18:22:10 +02:00
374 lines
9.6 KiB
C++
374 lines
9.6 KiB
C++
/* ============================================================
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* Falkon - Qt web browser
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* Copyright (C) 2013-2014 S. Razi Alavizadeh <s.r.alavizadeh@gmail.com>
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* Copyright (C) 2018 David Rosca <nowrep@gmail.com>
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*
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* Some code was taken from qtabwidget.cpp
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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#include "tabstackedwidget.h"
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#include "combotabbar.h"
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#include <QVBoxLayout>
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#include <QStackedWidget>
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#include <QKeyEvent>
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#include <QApplication>
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#include <QTimer>
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// Note: just some of QTabWidget's methods were implemented
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TabStackedWidget::TabStackedWidget(QWidget* parent)
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: QWidget(parent)
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, m_stack(0)
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, m_tabBar(0)
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, m_currentIndex(-1)
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, m_previousIndex(-1)
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{
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m_stack = new QStackedWidget(this);
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m_mainLayout = new QVBoxLayout;
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m_mainLayout->setSpacing(0);
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m_mainLayout->setContentsMargins(0, 0, 0, 0);
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m_mainLayout->addWidget(m_stack);
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setLayout(m_mainLayout);
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connect(m_stack, SIGNAL(widgetRemoved(int)), this, SLOT(tabWasRemoved(int)));
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}
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TabStackedWidget::~TabStackedWidget()
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{
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}
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ComboTabBar* TabStackedWidget::tabBar()
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{
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return m_tabBar;
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}
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void TabStackedWidget::setTabBar(ComboTabBar* tb)
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{
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Q_ASSERT(tb);
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if (tb->parentWidget() != this) {
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tb->setParent(this);
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tb->show();
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}
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delete m_tabBar;
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m_dirtyTabBar = true;
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m_tabBar = tb;
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setFocusProxy(m_tabBar);
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connect(m_tabBar, SIGNAL(currentChanged(int)), this, SLOT(showTab(int)));
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connect(m_tabBar, &ComboTabBar::tabMoved, this, &TabStackedWidget::tabWasMoved);
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connect(m_tabBar, SIGNAL(overFlowChanged(bool)), this, SLOT(setUpLayout()));
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if (m_tabBar->tabsClosable()) {
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connect(m_tabBar, SIGNAL(tabCloseRequested(int)), this, SIGNAL(tabCloseRequested(int)));
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}
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setDocumentMode(m_tabBar->documentMode());
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m_tabBar->installEventFilter(this);
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setUpLayout();
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}
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void TabStackedWidget::tabWasMoved(int from, int to)
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{
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m_stack->blockSignals(true);
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QWidget* w = m_stack->widget(from);
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m_stack->removeWidget(w);
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m_stack->insertWidget(to, w);
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m_stack->blockSignals(false);
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}
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void TabStackedWidget::tabWasRemoved(int index)
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{
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if (m_previousIndex == index)
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m_previousIndex = -1;
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else if (m_previousIndex > index)
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--m_previousIndex;
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if (m_currentIndex == index)
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m_currentIndex = -1;
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else if (m_currentIndex > index)
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--m_currentIndex;
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m_tabBar->removeTab(index);
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}
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void TabStackedWidget::setUpLayout()
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{
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if (!m_tabBar->isVisible()) {
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m_dirtyTabBar = true;
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return;
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}
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m_tabBar->setElideMode(m_tabBar->elideMode());
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m_dirtyTabBar = false;
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}
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bool TabStackedWidget::eventFilter(QObject* obj, QEvent* event)
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{
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if (m_dirtyTabBar && obj == m_tabBar && event->type() == QEvent::Show) {
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setUpLayout();
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}
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return false;
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}
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void TabStackedWidget::keyPressEvent(QKeyEvent* event)
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{
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if (((event->key() == Qt::Key_Tab || event->key() == Qt::Key_Backtab) &&
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count() > 1 && event->modifiers() & Qt::ControlModifier)
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#ifdef QT_KEYPAD_NAVIGATION
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|| QApplication::keypadNavigationEnabled() && (event->key() == Qt::Key_Left || event->key() == Qt::Key_Right) && count() > 1
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#endif
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) {
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int pageCount = count();
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int page = currentIndex();
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int dx = (event->key() == Qt::Key_Backtab || event->modifiers() & Qt::ShiftModifier) ? -1 : 1;
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#ifdef QT_KEYPAD_NAVIGATION
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if (QApplication::keypadNavigationEnabled() && (event->key() == Qt::Key_Left || event->key() == Qt::Key_Right)) {
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dx = event->key() == (isRightToLeft() ? Qt::Key_Right : Qt::Key_Left) ? -1 : 1;
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}
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#endif
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for (int pass = 0; pass < pageCount; ++pass) {
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page += dx;
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if (page < 0
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#ifdef QT_KEYPAD_NAVIGATION
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&& !event->isAutoRepeat()
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#endif
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) {
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page = count() - 1;
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}
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else if (page >= pageCount
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#ifdef QT_KEYPAD_NAVIGATION
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&& !event->isAutoRepeat()
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#endif
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) {
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page = 0;
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}
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if (m_tabBar->isTabEnabled(page)) {
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setCurrentIndex(page);
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break;
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}
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}
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if (!QApplication::focusWidget()) {
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m_tabBar->setFocus();
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}
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}
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else {
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event->ignore();
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}
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}
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void TabStackedWidget::showTab(int index)
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{
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if (validIndex(index)) {
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m_stack->setCurrentIndex(index);
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}
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m_previousIndex = m_currentIndex;
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m_currentIndex = index;
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// This is slot connected to ComboTabBar::currentChanged
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// We must send the signal even with invalid index (-1)
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emit currentChanged(index);
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}
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bool TabStackedWidget::documentMode() const
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{
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return m_tabBar->documentMode();
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}
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void TabStackedWidget::setDocumentMode(bool enabled)
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{
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m_tabBar->setDocumentMode(enabled);
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m_tabBar->setExpanding(!enabled);
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m_tabBar->setDrawBase(enabled);
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}
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int TabStackedWidget::addTab(QWidget* widget, const QString &label, bool pinned)
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{
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return insertTab(-1, widget, label, pinned);
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}
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int TabStackedWidget::insertTab(int index, QWidget* w, const QString &label, bool pinned)
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{
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if (!w) {
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return -1;
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}
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if (pinned) {
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index = index < 0 ? m_tabBar->pinnedTabsCount() : qMin(index, m_tabBar->pinnedTabsCount());
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index = m_stack->insertWidget(index, w);
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m_tabBar->insertTab(index, QIcon(), label, true);
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}
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else {
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index = index < 0 ? -1 : qMax(index, m_tabBar->pinnedTabsCount());
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index = m_stack->insertWidget(index, w);
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m_tabBar->insertTab(index, QIcon(), label, false);
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}
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if (m_previousIndex >= index)
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++m_previousIndex;
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if (m_currentIndex >= index)
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++m_currentIndex;
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QTimer::singleShot(0, this, SLOT(setUpLayout()));
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return index;
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}
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QString TabStackedWidget::tabText(int index) const
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{
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return m_tabBar->tabText(index);
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}
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void TabStackedWidget::setTabText(int index, const QString &label)
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{
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m_tabBar->setTabText(index, label);
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}
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QString TabStackedWidget::tabToolTip(int index) const
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{
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return m_tabBar->tabToolTip(index);
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}
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void TabStackedWidget::setTabToolTip(int index, const QString &tip)
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{
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m_tabBar->setTabToolTip(index, tip);
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}
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int TabStackedWidget::pinUnPinTab(int index, const QString &title)
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{
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QWidget* widget = m_stack->widget(index);
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QWidget* currentWidget = m_stack->currentWidget();
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if (!widget || !currentWidget)
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return -1;
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bool makePinned = index >= m_tabBar->pinnedTabsCount();
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QWidget* button = m_tabBar->tabButton(index, m_tabBar->iconButtonPosition());
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// To show tooltip of tab which is pinned in the current session
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QString toolTip = tabToolTip(index);
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m_tabBar->m_blockCurrentChangedSignal = true;
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m_tabBar->setTabButton(index, m_tabBar->iconButtonPosition(), 0);
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m_stack->removeWidget(widget);
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int newIndex = insertTab(makePinned ? 0 : m_tabBar->pinnedTabsCount(), widget, title, makePinned);
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m_tabBar->setTabButton(newIndex, m_tabBar->iconButtonPosition(), button);
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m_tabBar->m_blockCurrentChangedSignal = false;
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setTabToolTip(newIndex, toolTip);
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// Restore current widget
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setCurrentWidget(currentWidget);
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emit pinStateChanged(newIndex, makePinned);
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return newIndex;
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}
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void TabStackedWidget::removeTab(int index)
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{
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if (QWidget* w = m_stack->widget(index)) {
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// Select another current tab before remove, so it won't be handled by QTabBar
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if (index == currentIndex() && count() > 1)
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selectTabOnRemove();
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m_stack->removeWidget(w);
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}
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}
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void TabStackedWidget::moveTab(int from, int to)
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{
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m_tabBar->moveTab(from, to);
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}
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int TabStackedWidget::currentIndex() const
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{
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return m_tabBar->currentIndex();
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}
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void TabStackedWidget::setCurrentIndex(int index)
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{
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m_tabBar->setCurrentIndex(index);
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}
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QWidget* TabStackedWidget::currentWidget() const
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{
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return m_stack->currentWidget();
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}
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void TabStackedWidget::setCurrentWidget(QWidget* widget)
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{
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m_tabBar->setCurrentIndex(indexOf(widget));
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}
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QWidget* TabStackedWidget::widget(int index) const
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{
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return m_stack->widget(index);
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}
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int TabStackedWidget::indexOf(QWidget* widget) const
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{
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return m_stack->indexOf(widget);
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}
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int TabStackedWidget::count() const
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{
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return m_tabBar->count();
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}
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bool TabStackedWidget::validIndex(int index) const
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{
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return (index < m_stack->count() && index >= 0);
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}
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void TabStackedWidget::selectTabOnRemove()
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{
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Q_ASSERT(count() > 1);
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int index = -1;
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switch (m_tabBar->selectionBehaviorOnRemove()) {
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case QTabBar::SelectPreviousTab:
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if (validIndex(m_previousIndex)) {
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index = m_previousIndex;
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break;
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}
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// fallthrough
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case QTabBar::SelectLeftTab:
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index = currentIndex() - 1;
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if (!validIndex(index))
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index = 1;
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break;
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case QTabBar::SelectRightTab:
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index = currentIndex() + 1;
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if (!validIndex(index))
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index = currentIndex() - 1;
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break;
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default:
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break;
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}
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Q_ASSERT(validIndex(index));
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setCurrentIndex(index);
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}
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