690 lines
23 KiB
C++
690 lines
23 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#include "fancytabbar.h"
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#include "stylehelper.h"
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#include <QMouseEvent>
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#include <QPainter>
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#include <QColor>
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#include <QStackedLayout>
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#include <QToolTip>
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const int FancyTabBar::m_rounding = 22;
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//---------------------------------------------------------------------------------------------------------------------
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FancyTabBar::FancyTabBar(const TabBarPosition position, QWidget *parent)
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: QWidget(parent),
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m_position(position),
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m_hoverRect(),
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m_hoverIndex(-1),
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m_currentIndex(-1),
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m_attachedTabs(),
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m_timerTriggerChangedSignal()
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{
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if (m_position == FancyTabBar::Above || m_position == FancyTabBar::Below)
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{
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setMinimumHeight(qMax(2 * m_rounding, 40));
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setMaximumHeight(TabSizeHint(false).height());
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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}
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else
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{
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setMinimumWidth(qMax(2 * m_rounding, 40));
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setMaximumWidth(TabSizeHint(false).width());
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setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
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}
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setAttribute(Qt::WA_Hover, true);
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setFocusPolicy(Qt::NoFocus);
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setMouseTracking(true); // Needed for hover events
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m_timerTriggerChangedSignal.setSingleShot(true);
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// We use a zerotimer to keep the sidebar responsive
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connect(&m_timerTriggerChangedSignal, &QTimer::timeout, this, &FancyTabBar::EmitCurrentIndex);
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}
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//---------------------------------------------------------------------------------------------------------------------
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QSize FancyTabBar::TabSizeHint(bool minimum) const
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{
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QFont boldFont(font());
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boldFont.setPointSizeF(StyleHelper::sidebarFontSize());
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boldFont.setBold(true);
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QFontMetrics fm(boldFont);
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int spacing = 8;
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int maxLabelwidth = 0;
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for (int tab=0 ; tab<Count() ;++tab)
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{
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QString tabText = TabText(tab).simplified();
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const QStringList words = tabText.split(QLatin1Char(' '));
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if (words.size() > 1)
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{
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QString sentence;
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for (auto &word : words)
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{
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sentence = sentence.isEmpty() ? sentence = word : sentence + QLatin1Char(' ') + word;
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#if QT_VERSION >= QT_VERSION_CHECK(5, 11, 0)
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const int width = fm.horizontalAdvance(sentence);
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#else
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const int width = fm.width(sentence);
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#endif
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if (maxLabelwidth < width)
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{
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maxLabelwidth = width;
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sentence.clear();
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}
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}
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}
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else
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{
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#if QT_VERSION >= QT_VERSION_CHECK(5, 11, 0)
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const int width = fm.horizontalAdvance(tabText);
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#else
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const int width = fm.width(tabText);
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#endif
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if (width > maxLabelwidth)
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{
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maxLabelwidth = width;
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}
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}
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}
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int width = 60 + spacing + 2;
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int iconHeight = minimum ? 0 : 32;
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return QSize(qMax(width, maxLabelwidth + 4), iconHeight + spacing + fm.height());
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}
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//---------------------------------------------------------------------------------------------------------------------
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QPoint FancyTabBar::GetCorner(const QRect& rect, const Corner corner) const
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{
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switch(m_position)
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{
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case Above:
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switch(corner)
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{
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case OutsideBeginning:
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return rect.topLeft();
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case OutsideEnd:
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return rect.topRight();
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case InsideBeginning:
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return rect.bottomLeft();
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case InsideEnd:
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return rect.bottomRight();
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default:
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break;
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}
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break;
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case Below:
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switch(corner)
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{
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case OutsideBeginning:
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return rect.bottomLeft();
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case OutsideEnd:
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return rect.bottomRight();
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case InsideBeginning:
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return rect.topLeft();
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case InsideEnd:
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return rect.topRight();
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default:
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break;
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}
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break;
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case Left:
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switch(corner)
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{
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case OutsideBeginning:
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return rect.topLeft();
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case OutsideEnd:
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return rect.bottomLeft();
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case InsideBeginning:
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return rect.topRight();
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case InsideEnd:
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return rect.bottomRight();
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default:
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break;
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}
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break;
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case Right:
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switch(corner)
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{
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case OutsideBeginning:
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return rect.topRight();
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case OutsideEnd:
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return rect.bottomRight();
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case InsideBeginning:
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return rect.topLeft();
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case InsideEnd:
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return rect.bottomLeft();
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default:
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break;
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}
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break;
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default:
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break;
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}
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qFatal("that's impossible!");
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return QPoint();
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}
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//---------------------------------------------------------------------------------------------------------------------
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// You can pass this method a QRect and tell it to move its edges to the outside (+)
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// or inside (-) of the rect. For example, with a TabBar at the Above,
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//
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// adjustRect(QRect(0,0,10,10), 1, 2, 3, -4) // thats a 10 by 10 QRect, starting at 0/0
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//
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// gives
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//
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// QRect(-3, -1, 9, 13) // 9 by 13 rect, starting at -3/-1.
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QRect FancyTabBar::AdjustRect(const QRect& rect, const qint8 offsetOutside, const qint8 offsetInside,
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const qint8 offsetBeginning, const qint8 offsetEnd) const
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{
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switch(m_position)
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{
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case Above:
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return rect.adjusted(-offsetBeginning, -offsetOutside, offsetEnd, offsetInside);
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case Below:
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return rect.adjusted(-offsetBeginning, -offsetInside, -offsetBeginning, offsetOutside);
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case Left:
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return rect.adjusted(-offsetOutside, -offsetBeginning, offsetInside, offsetEnd);
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case Right:
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return rect.adjusted(-offsetInside, -offsetBeginning, offsetOutside, offsetEnd);
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default:
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break;
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}
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qFatal("that's impossible!");
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return QRect();
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}
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//---------------------------------------------------------------------------------------------------------------------
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// Same with a point: + means towards Outside/End, - means towards Inside/Beginning
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QPoint FancyTabBar::AdjustPoint(const QPoint& point, const qint8 offsetInsideOutside,
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const qint8 offsetBeginningEnd) const
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{
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switch(m_position)
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{
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case Above:
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return point + QPoint(offsetBeginningEnd, -offsetInsideOutside);
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case Below:
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return point + QPoint(offsetBeginningEnd, offsetInsideOutside);
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case Left:
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return point + QPoint(-offsetInsideOutside, offsetBeginningEnd);
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case Right:
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return point + QPoint(offsetInsideOutside, offsetBeginningEnd);
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default:
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break;
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}
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qFatal("that's impossible!");
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return QPoint();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void FancyTabBar::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event)
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QPainter painter(this);
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// paint background
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QRect rectangle = AdjustRect(rect(), 0, -1, 0, 0);
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QLinearGradient lg;
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lg.setStart(GetCorner(rectangle, OutsideBeginning));
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lg.setFinalStop(GetCorner(rectangle, InsideBeginning));
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lg.setColorAt(0.0, QColor(64, 64, 64, 255));
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lg.setColorAt(1.0, QColor(130, 130, 130, 255));
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painter.fillRect(rectangle, lg);
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// draw dark widget bordert on inner inside (e.g. bottom if the widget position is top)
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painter.setPen(StyleHelper::borderColor());
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painter.drawLine(AdjustPoint(GetCorner(rectangle, InsideBeginning), -1, 0),
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AdjustPoint(GetCorner(rectangle, InsideEnd), -1, 0));
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// draw bright widget border on outer inside (e.g. bottom if the widget position is top)
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painter.setPen(StyleHelper::sidebarHighlight());
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painter.drawLine(GetCorner(rectangle, InsideBeginning), GetCorner(rectangle, InsideEnd));
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// paint inactive tabs
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for (int i = 0; i < Count(); ++i)
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{
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if (i != CurrentIndex())
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{
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PaintTab(&painter, i);
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}
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}
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// paint active tab last, since it overlaps the neighbors
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if (CurrentIndex() != -1)
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{
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PaintTab(&painter, CurrentIndex());
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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// Handle hover events for mouse fade ins
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void FancyTabBar::mouseMoveEvent(QMouseEvent *e)
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{
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int newHover = -1;
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for (int i = 0; i < Count(); ++i)
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{
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QRect area = TabRect(i);
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if (area.contains(e->pos()))
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{
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newHover = i;
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break;
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}
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}
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if (newHover == m_hoverIndex)
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{
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return;
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}
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if (ValidIndex(m_hoverIndex))
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{
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m_attachedTabs[m_hoverIndex]->fadeOut();
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}
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m_hoverIndex = newHover;
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if (ValidIndex(m_hoverIndex))
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{
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m_attachedTabs[m_hoverIndex]->fadeIn();
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m_hoverRect = TabRect(m_hoverIndex);
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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bool FancyTabBar::event(QEvent *event)
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{
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if (event->type() == QEvent::ToolTip)
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{
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if (ValidIndex(m_hoverIndex))
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{
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QString tt = TabToolTip(m_hoverIndex);
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if (!tt.isEmpty())
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{
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QToolTip::showText(static_cast<QHelpEvent*>(event)->globalPos(), tt, this);
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return true;
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}
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}
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}
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return QWidget::event(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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// Resets hover animation on mouse enter
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void FancyTabBar::enterEvent(QEvent *e)
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{
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Q_UNUSED(e)
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m_hoverRect = QRect();
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m_hoverIndex = -1;
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}
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//---------------------------------------------------------------------------------------------------------------------
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// Resets hover animation on mouse leave
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void FancyTabBar::leaveEvent(QEvent *e)
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{
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Q_UNUSED(e)
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m_hoverIndex = -1;
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m_hoverRect = QRect();
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for (int i = 0 ; i < m_attachedTabs.count() ; ++i)
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{
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m_attachedTabs[i]->fadeOut();
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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bool FancyTabBar::ValidIndex(int index) const
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{
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return index >= 0 && index < m_attachedTabs.count();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void FancyTabBar::SetOrientation(const FancyTabBar::TabBarPosition p)
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{
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m_position = p;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QSize FancyTabBar::sizeHint() const
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{
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QSize sh = TabSizeHint();
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// return QSize(sh.width(), sh.height() * mAttachedTabs.count());
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if (m_position == Above || m_position == Below)
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{
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return QSize(sh.width() * m_attachedTabs.count(), sh.height());
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}
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else
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{
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return QSize(sh.width(), sh.height() * m_attachedTabs.count());
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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QSize FancyTabBar::minimumSizeHint() const
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{
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const QSize sh = TabSizeHint(true);
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// return QSize(sh.width(), sh.height() * mAttachedTabs.count());
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if(m_position == Above || m_position == Below)
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{
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return QSize(sh.width() * m_attachedTabs.count(), sh.height());
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}
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else
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{
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return QSize(sh.width(), sh.height() * m_attachedTabs.count());
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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QRect FancyTabBar::TabRect(int index) const
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{
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QSize sh = TabSizeHint();
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if(m_position == Above || m_position == Below)
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{
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if (sh.width() * m_attachedTabs.count() > width())
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{
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sh.setWidth(width() / m_attachedTabs.count());
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}
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return QRect(index * sh.width(), 0, sh.width(), sh.height());
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}
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else
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{
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if (sh.height() * m_attachedTabs.count() > height())
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{
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sh.setHeight(height() / m_attachedTabs.count());
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}
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return QRect(0, index * sh.height(), sh.width(), sh.height());
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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// This keeps the sidebar responsive since
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// we get a repaint before loading the
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// mode itself
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void FancyTabBar::EmitCurrentIndex()
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{
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emit CurrentChanged(m_currentIndex);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void FancyTabBar::mousePressEvent(QMouseEvent *e)
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{
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e->accept();
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for (int index = 0; index < m_attachedTabs.count(); ++index)
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{
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if (TabRect(index).contains(e->pos()))
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{
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if (IsTabEnabled(index))
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{
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m_currentIndex = index;
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update();
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m_timerTriggerChangedSignal.start(0);
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}
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break;
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void FancyTabBar::PaintTab(QPainter *painter, int tabIndex) const
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{
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if (!ValidIndex(tabIndex))
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{
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qWarning("invalid index");
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return;
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}
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painter->save();
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QRect rect = TabRect(tabIndex);
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bool selected = (tabIndex == m_currentIndex);
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bool enabled = IsTabEnabled(tabIndex);
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if(selected)
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{
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// background
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painter->save();
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QLinearGradient grad(GetCorner(rect, OutsideBeginning), GetCorner(rect, InsideBeginning));
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grad.setColorAt(0, QColor(255, 255, 255, 140));
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grad.setColorAt(1, QColor(255, 255, 255, 210));
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painter->fillRect(AdjustRect(rect, 0, 0, 0, -1), grad);
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painter->restore();
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// shadows (the black lines immediately before/after (active && selected)-backgrounds)
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painter->setPen(QColor(0, 0, 0, 110));
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painter->drawLine(AdjustPoint(GetCorner(rect, OutsideBeginning), 0, -1),
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AdjustPoint(GetCorner(rect, InsideBeginning), 0, -1));
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painter->drawLine(GetCorner(rect, OutsideEnd), GetCorner(rect, InsideEnd));
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// thin shadow on the outside of active tab
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painter->setPen(QColor(0, 0, 0, 40));
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painter->drawLine(GetCorner(rect, OutsideBeginning), GetCorner(rect, OutsideEnd));
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// highlights
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painter->setPen(QColor(255, 255, 255, 50));
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painter->drawLine(AdjustPoint(GetCorner(rect, OutsideBeginning), 0, -2),
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AdjustPoint(GetCorner(rect, InsideBeginning), 0, -2));
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painter->drawLine(AdjustPoint(GetCorner(rect, OutsideEnd), 0, 1),
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AdjustPoint(GetCorner(rect, InsideEnd), 0, 1));
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painter->setPen(QColor(255, 255, 255, 40));
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// thin white line towards beginning
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painter->drawLine(AdjustPoint(GetCorner(rect, OutsideBeginning), 0, 0),
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AdjustPoint(GetCorner(rect, InsideBeginning), 0, 0));
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// thin white line on inside border
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painter->drawLine(AdjustPoint(GetCorner(rect, InsideBeginning), 0, 1),
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AdjustPoint(GetCorner(rect, InsideEnd), 0, -1));
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// thin white line towards end
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painter->drawLine(AdjustPoint(GetCorner(rect, OutsideEnd), 0, -1),
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AdjustPoint(GetCorner(rect, InsideEnd), 0, -1));
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}
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QString tabText(this->TabText(tabIndex));
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QRect tabTextRect(rect);
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const bool drawIcon = rect.height() > 36;
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QRect tabIconRect(tabTextRect);
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tabTextRect.translate(0, drawIcon ? -2 : 1);
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QFont boldFont(painter->font());
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boldFont.setPointSizeF(StyleHelper::sidebarFontSize());
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boldFont.setBold(true);
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painter->setFont(boldFont);
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painter->setPen(selected ? QColor(255, 255, 255, 160) : QColor(0, 0, 0, 110));
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const int textFlags = static_cast<int>(Qt::AlignCenter | (drawIcon ? Qt::AlignBottom : Qt::AlignVCenter)
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| Qt::TextWordWrap);
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if (enabled)
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{
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painter->drawText(tabTextRect, textFlags, tabText);
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painter->setPen(selected ? QColor(60, 60, 60) : StyleHelper::panelTextColor());
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}
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else
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{
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painter->setPen(selected ? StyleHelper::panelTextColor() : QColor(255, 255, 255, 120));
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}
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#ifndef Q_OS_MAC
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// hover
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if(!selected && enabled)
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{
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painter->save();
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int fader = int(m_attachedTabs[tabIndex]->fader());
|
|
QLinearGradient grad(GetCorner(rect, OutsideBeginning), GetCorner(rect, InsideBeginning));
|
|
|
|
grad.setColorAt(0, Qt::transparent);
|
|
grad.setColorAt(0.5, QColor(255, 255, 255, fader));
|
|
grad.setColorAt(1, Qt::transparent);
|
|
painter->fillRect(rect, grad);
|
|
painter->setPen(QPen(grad, 1.0));
|
|
|
|
if(m_position == Above || m_position == Below)
|
|
{
|
|
painter->drawLine(rect.topLeft(), rect.bottomLeft());
|
|
painter->drawLine(rect.topRight(), rect.bottomRight());
|
|
}
|
|
else
|
|
{
|
|
painter->drawLine(rect.topLeft(), rect.topRight());
|
|
painter->drawLine(rect.bottomLeft(), rect.bottomRight());
|
|
}
|
|
|
|
painter->restore();
|
|
}
|
|
#endif //#ifndef Q_OS_MAC
|
|
|
|
if (!enabled)
|
|
{
|
|
painter->setOpacity(0.7);
|
|
}
|
|
|
|
if (drawIcon)
|
|
{
|
|
int textHeight = painter->fontMetrics().boundingRect(QRect(0, 0, width(), height()), Qt::TextWordWrap,
|
|
tabText).height();
|
|
tabIconRect.adjust(0, 0, 0, -textHeight);
|
|
StyleHelper::drawIconWithShadow(TabIcon(tabIndex), tabIconRect, painter,
|
|
enabled ? QIcon::Normal : QIcon::Disabled);
|
|
}
|
|
|
|
painter->translate(0, -1);
|
|
painter->drawText(tabTextRect, textFlags, tabText);
|
|
painter->restore();
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::SetCurrentIndex(int index)
|
|
{
|
|
if (IsTabEnabled(index))
|
|
{
|
|
m_currentIndex = index;
|
|
update();
|
|
emit CurrentChanged(m_currentIndex);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
int FancyTabBar::CurrentIndex() const
|
|
{
|
|
return m_currentIndex;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::SetTabToolTip(int index, QString toolTip)
|
|
{
|
|
m_attachedTabs[index]->m_toolTip = toolTip;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
QString FancyTabBar::TabToolTip(int index) const
|
|
{
|
|
return m_attachedTabs.at(index)->m_toolTip;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
QIcon FancyTabBar::TabIcon(int index) const
|
|
{
|
|
return m_attachedTabs.at(index)->m_icon;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
QString FancyTabBar::TabText(int index) const
|
|
{
|
|
return m_attachedTabs.at(index)->m_text;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::SetTabText(int index, QString text)
|
|
{
|
|
m_attachedTabs.at(index)->m_text=text;
|
|
setMaximumWidth(TabSizeHint(false).width());
|
|
update();
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
int FancyTabBar::Count() const
|
|
{
|
|
return m_attachedTabs.count();
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::SetTabEnabled(int index, bool enable)
|
|
{
|
|
Q_ASSERT(index < m_attachedTabs.size());
|
|
Q_ASSERT(index >= 0);
|
|
|
|
if (index < m_attachedTabs.size() && index >= 0)
|
|
{
|
|
m_attachedTabs[index]->m_enabled = enable;
|
|
update(TabRect(index));
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
bool FancyTabBar::IsTabEnabled(int index) const
|
|
{
|
|
Q_ASSERT(index < m_attachedTabs.size());
|
|
Q_ASSERT(index >= 0);
|
|
|
|
if (index < m_attachedTabs.size() && index >= 0)
|
|
{
|
|
return m_attachedTabs[index]->m_enabled;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::InsertTab(int index, const QIcon &icon, const QString &label)
|
|
{
|
|
FancyTab *tab = new FancyTab(this);
|
|
tab->m_icon = icon;
|
|
tab->m_text = label;
|
|
m_attachedTabs.insert(index, tab);
|
|
|
|
setMaximumWidth(TabSizeHint(false).width());
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
void FancyTabBar::RemoveTab(int index)
|
|
{
|
|
FancyTab *tab = m_attachedTabs.takeAt(index);
|
|
delete tab;
|
|
|
|
setMaximumWidth(TabSizeHint(false).width());
|
|
}
|