qt-everywhere-src-5.15.1/qtbase/tests/manual/qtabbar/main.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the test suite of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QApplication>
 #include <QWidget>
 #include <QStackedWidget>
 #include <QTabBar>
 #include <QLabel>
 #include <QLayout>
 #include <QDesktopWidget>
 #include <QTabWidget>
 #include <QProxyStyle>
 #include <qdebug.h>
 #include "tabbarform.h"

 class TabBarProxyStyle : public QProxyStyle
 {
 public:
     TabBarProxyStyle() : QProxyStyle(), alignment(Qt::AlignLeft)
     { }

     int styleHint(StyleHint hint, const QStyleOption *option = 0,
                   const QWidget *widget = 0, QStyleHintReturn *returnData = 0) const
     {
         if (hint == QStyle::SH_TabBar_Alignment)
             return alignment;

         return QProxyStyle::styleHint(hint, option, widget, returnData);
     }

     Qt::Alignment alignment;
 };

 const int TabCount = 5;

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     auto *proxyStyle = new TabBarProxyStyle;
     app.setStyle(proxyStyle);

     QWidget widget;
     QStackedWidget stackedWidget;
     QTabBar tabBar;
     tabBar.setDocumentMode(true);
     tabBar.setTabsClosable(true);
     tabBar.setMovable(true);
     tabBar.setExpanding(false);

     // top
     tabBar.setShape(QTabBar::RoundedNorth);
     // bottom
 //    tabBar.setShape(QTabBar::RoundedSouth);
     // left
 //    tabBar.setShape(QTabBar::RoundedWest);
     // right
 //    tabBar.setShape(QTabBar::RoundedEast);

     const auto shortLabel = QStringLiteral("Tab %1");
     const auto longLabel = QStringLiteral("An Extremely Long Tab Label %1");

     QMap<int, QWidget*> tabs;
     for (int i = 0; i < TabCount; i++) {
         QString tabNumberString = QString::number(i);
         QLabel *label = new QLabel(QStringLiteral("Tab %1 content").arg(tabNumberString));
         tabs[i] = label;
         label->setAlignment(Qt::AlignCenter);
         stackedWidget.addWidget(label);
         tabBar.addTab(shortLabel.arg(tabNumberString));
     }

     QObject::connect(&tabBar, &QTabBar::tabMoved, [&tabs](int from, int to) {
         QWidget *thisWidget = tabs[from];
         QWidget *thatWidget = tabs[to];
         tabs[from] = thatWidget;
         tabs[to] = thisWidget;
     });

     QObject::connect(&tabBar, &QTabBar::currentChanged, [&stackedWidget, &tabs](int index) {
         if (index >= 0)
             stackedWidget.setCurrentWidget(tabs[index]);
     });

     QObject::connect(&tabBar, &QTabBar::tabCloseRequested, [&stackedWidget, &tabBar, &tabs](int index) {
         QWidget *widget = tabs[index];
         tabBar.removeTab(index);
         for (int i = index + 1; i < TabCount; i++)
             tabs[i-1] = tabs[i];
         int currentIndex = tabBar.currentIndex();
         if (currentIndex >= 0)
             stackedWidget.setCurrentWidget(tabs[currentIndex]);
         delete widget;
     });

     QLayout *layout;
     switch (tabBar.shape()) {
     case QTabBar::RoundedEast:
     case QTabBar::TriangularEast:
         tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
         layout = new QHBoxLayout(&widget);
         layout->addWidget(&stackedWidget);
         layout->addWidget(&tabBar);
         break;
     case QTabBar::RoundedWest:
     case QTabBar::TriangularWest:
         tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
         layout = new QHBoxLayout(&widget);
         layout->addWidget(&tabBar);
         layout->addWidget(&stackedWidget);
         break;
     case QTabBar::RoundedNorth:
     case QTabBar::TriangularNorth:
         tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
         layout = new QVBoxLayout(&widget);
         layout->addWidget(&tabBar);
         layout->addWidget(&stackedWidget);
         break;
     case QTabBar::RoundedSouth:
     case QTabBar::TriangularSouth:
         tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
         layout = new QVBoxLayout(&widget);
         layout->addWidget(&stackedWidget);
         layout->addWidget(&tabBar);
         break;
     }

     TabBarForm form;
     layout->addWidget(&form);
     layout->setAlignment(&form, Qt::AlignHCenter);

     form.ui->documentModeButton->setChecked(tabBar.documentMode());
     QObject::connect(form.ui->documentModeButton, &QCheckBox::toggled, [&] {
         tabBar.setDocumentMode(form.ui->documentModeButton->isChecked());
         // QMacStyle (and maybe other styles) requires a re-polish to get the right font
         QApplication::sendEvent(&tabBar, new QEvent(QEvent::ThemeChange));
     });

     form.ui->movableTabsButton->setChecked(tabBar.isMovable());
     QObject::connect(form.ui->movableTabsButton, &QCheckBox::toggled, [&] {
         tabBar.setMovable(form.ui->movableTabsButton->isChecked());
         tabBar.update();
     });

     form.ui->closableTabsButton->setChecked(tabBar.tabsClosable());
     QObject::connect(form.ui->closableTabsButton, &QCheckBox::toggled, [&] {
         tabBar.setTabsClosable(form.ui->closableTabsButton->isChecked());
         tabBar.update();
     });

     form.ui->expandingTabsButton->setChecked(tabBar.expanding());
     QObject::connect(form.ui->expandingTabsButton, &QCheckBox::toggled, [&] {
         tabBar.setExpanding(form.ui->expandingTabsButton->isChecked());
         tabBar.update();
     });

     form.ui->displayIconButton->setChecked(!tabBar.tabIcon(0).isNull());
     QObject::connect(form.ui->displayIconButton, &QCheckBox::toggled, [&] {
         const auto icon = form.ui->displayIconButton->isChecked() ?
                           tabBar.style()->standardIcon(QStyle::SP_ComputerIcon) : QIcon();
         for (int i = 0; i < tabBar.count(); i++)
             tabBar.setTabIcon(i, icon);
     });

     form.ui->longLabelButton->setChecked(false);
     QObject::connect(form.ui->longLabelButton, &QCheckBox::toggled, [&] {
         const auto &label = form.ui->longLabelButton->isChecked() ? longLabel : shortLabel;
         for (int i = 0; i < tabBar.count(); i++)
             tabBar.setTabText(i, label.arg(i));
     });

     QObject::connect(form.ui->shapeComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), [&](int index) {
         Q_UNUSED(index);
         // TODO
     });

     if (proxyStyle->alignment == Qt::AlignLeft)
         form.ui->leftAlignedButton->setChecked(true);
     else if (proxyStyle->alignment == Qt::AlignRight)
         form.ui->rightAlignedButton->setChecked(true);
     else
         form.ui->centeredButton->setChecked(true);
     QObject::connect(form.ui->textAlignmentGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked), [&](QAbstractButton *b) {
         proxyStyle->alignment = b == form.ui->leftAlignedButton ? Qt::AlignLeft :
                                 b == form.ui->rightAlignedButton ? Qt::AlignRight : Qt::AlignCenter;
         QApplication::sendEvent(&tabBar, new QEvent(QEvent::StyleChange));
     });

     layout->setMargin(12);
     widget.show();

     return app.exec();
 }
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the test suite of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:BSD$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** BSD License Usage
	** Alternatively, you may use this file under the terms of the BSD license
	** as follows:
	**
	** "Redistribution and use in source and binary forms, with or without
	** modification, are permitted provided that the following conditions are
	** met:
	** * Redistributions of source code must retain the above copyright
	** notice, this list of conditions and the following disclaimer.
	** * Redistributions in binary form must reproduce the above copyright
	** notice, this list of conditions and the following disclaimer in
	** the documentation and/or other materials provided with the
	** distribution.
	** * Neither the name of The Qt Company Ltd nor the names of its
	** contributors may be used to endorse or promote products derived
	** from this software without specific prior written permission.
	**
	**
	** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include <QApplication>
	#include <QWidget>
	#include <QStackedWidget>
	#include <QTabBar>
	#include <QLabel>
	#include <QLayout>
	#include <QDesktopWidget>
	#include <QTabWidget>
	#include <QProxyStyle>
	#include <qdebug.h>
	#include "tabbarform.h"

	class TabBarProxyStyle : public QProxyStyle
	{
	public:
	TabBarProxyStyle() : QProxyStyle(), alignment(Qt::AlignLeft)
	{ }

	int styleHint(StyleHint hint, const QStyleOption *option = 0,
	const QWidget widget = 0, QStyleHintReturn returnData = 0) const
	{
	if (hint == QStyle::SH_TabBar_Alignment)
	return alignment;

	return QProxyStyle::styleHint(hint, option, widget, returnData);
	}

	Qt::Alignment alignment;
	};

	const int TabCount = 5;

	int main(int argc, char *argv[])
	{
	QApplication app(argc, argv);
	auto *proxyStyle = new TabBarProxyStyle;
	app.setStyle(proxyStyle);

	QWidget widget;
	QStackedWidget stackedWidget;
	QTabBar tabBar;
	tabBar.setDocumentMode(true);
	tabBar.setTabsClosable(true);
	tabBar.setMovable(true);
	tabBar.setExpanding(false);

	// top
	tabBar.setShape(QTabBar::RoundedNorth);
	// bottom
	// tabBar.setShape(QTabBar::RoundedSouth);
	// left
	// tabBar.setShape(QTabBar::RoundedWest);
	// right
	// tabBar.setShape(QTabBar::RoundedEast);

	const auto shortLabel = QStringLiteral("Tab %1");
	const auto longLabel = QStringLiteral("An Extremely Long Tab Label %1");

	QMap<int, QWidget*> tabs;
	for (int i = 0; i < TabCount; i++) {
	QString tabNumberString = QString::number(i);
	QLabel *label = new QLabel(QStringLiteral("Tab %1 content").arg(tabNumberString));
	tabs[i] = label;
	label->setAlignment(Qt::AlignCenter);
	stackedWidget.addWidget(label);
	tabBar.addTab(shortLabel.arg(tabNumberString));
	}

	QObject::connect(&tabBar, &QTabBar::tabMoved, [&tabs](int from, int to) {
	QWidget *thisWidget = tabs[from];
	QWidget *thatWidget = tabs[to];
	tabs[from] = thatWidget;
	tabs[to] = thisWidget;
	});

	QObject::connect(&tabBar, &QTabBar::currentChanged, [&stackedWidget, &tabs](int index) {
	if (index >= 0)
	stackedWidget.setCurrentWidget(tabs[index]);
	});

	QObject::connect(&tabBar, &QTabBar::tabCloseRequested, [&stackedWidget, &tabBar, &tabs](int index) {
	QWidget *widget = tabs[index];
	tabBar.removeTab(index);
	for (int i = index + 1; i < TabCount; i++)
	tabs[i-1] = tabs[i];
	int currentIndex = tabBar.currentIndex();
	if (currentIndex >= 0)
	stackedWidget.setCurrentWidget(tabs[currentIndex]);
	delete widget;
	});

	QLayout *layout;
	switch (tabBar.shape()) {
	case QTabBar::RoundedEast:
	case QTabBar::TriangularEast:
	tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
	layout = new QHBoxLayout(&widget);
	layout->addWidget(&stackedWidget);
	layout->addWidget(&tabBar);
	break;
	case QTabBar::RoundedWest:
	case QTabBar::TriangularWest:
	tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
	layout = new QHBoxLayout(&widget);
	layout->addWidget(&tabBar);
	layout->addWidget(&stackedWidget);
	break;
	case QTabBar::RoundedNorth:
	case QTabBar::TriangularNorth:
	tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
	layout = new QVBoxLayout(&widget);
	layout->addWidget(&tabBar);
	layout->addWidget(&stackedWidget);
	break;
	case QTabBar::RoundedSouth:
	case QTabBar::TriangularSouth:
	tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
	layout = new QVBoxLayout(&widget);
	layout->addWidget(&stackedWidget);
	layout->addWidget(&tabBar);
	break;
	}

	TabBarForm form;
	layout->addWidget(&form);
	layout->setAlignment(&form, Qt::AlignHCenter);

	form.ui->documentModeButton->setChecked(tabBar.documentMode());
	QObject::connect(form.ui->documentModeButton, &QCheckBox::toggled, [&] {
	tabBar.setDocumentMode(form.ui->documentModeButton->isChecked());
	// QMacStyle (and maybe other styles) requires a re-polish to get the right font
	QApplication::sendEvent(&tabBar, new QEvent(QEvent::ThemeChange));
	});

	form.ui->movableTabsButton->setChecked(tabBar.isMovable());
	QObject::connect(form.ui->movableTabsButton, &QCheckBox::toggled, [&] {
	tabBar.setMovable(form.ui->movableTabsButton->isChecked());
	tabBar.update();
	});

	form.ui->closableTabsButton->setChecked(tabBar.tabsClosable());
	QObject::connect(form.ui->closableTabsButton, &QCheckBox::toggled, [&] {
	tabBar.setTabsClosable(form.ui->closableTabsButton->isChecked());
	tabBar.update();
	});

	form.ui->expandingTabsButton->setChecked(tabBar.expanding());
	QObject::connect(form.ui->expandingTabsButton, &QCheckBox::toggled, [&] {
	tabBar.setExpanding(form.ui->expandingTabsButton->isChecked());
	tabBar.update();
	});

	form.ui->displayIconButton->setChecked(!tabBar.tabIcon(0).isNull());
	QObject::connect(form.ui->displayIconButton, &QCheckBox::toggled, [&] {
	const auto icon = form.ui->displayIconButton->isChecked() ?
	tabBar.style()->standardIcon(QStyle::SP_ComputerIcon) : QIcon();
	for (int i = 0; i < tabBar.count(); i++)
	tabBar.setTabIcon(i, icon);
	});

	form.ui->longLabelButton->setChecked(false);
	QObject::connect(form.ui->longLabelButton, &QCheckBox::toggled, [&] {
	const auto &label = form.ui->longLabelButton->isChecked() ? longLabel : shortLabel;
	for (int i = 0; i < tabBar.count(); i++)
	tabBar.setTabText(i, label.arg(i));
	});

	QObject::connect(form.ui->shapeComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), [&](int index) {
	Q_UNUSED(index);
	// TODO
	});

	if (proxyStyle->alignment == Qt::AlignLeft)
	form.ui->leftAlignedButton->setChecked(true);
	else if (proxyStyle->alignment == Qt::AlignRight)
	form.ui->rightAlignedButton->setChecked(true);
	else
	form.ui->centeredButton->setChecked(true);
	QObject::connect(form.ui->textAlignmentGroup, QOverload<QAbstractButton >::of(&QButtonGroup::buttonClicked), [&](QAbstractButton b) {
	proxyStyle->alignment = b == form.ui->leftAlignedButton ? Qt::AlignLeft :
	b == form.ui->rightAlignedButton ? Qt::AlignRight : Qt::AlignCenter;
	QApplication::sendEvent(&tabBar, new QEvent(QEvent::StyleChange));
	});

	layout->setMargin(12);
	widget.show();

	return app.exec();
	}