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addtabbutton.cpp
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addtabbutton.cpp
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/*
* Copyright 2022 Sascha Muenzberg
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "addtabbutton.h"
#include <QPainter>
#include <QStyleOption>
AddTabButton::AddTabButton(int width, int height, QWidget *parent)
: QAbstractButton(parent), m_width(width), m_height(height), m_newTabIcon()
{
setFocusPolicy(Qt::NoFocus);
setCursor(Qt::ArrowCursor);
setToolTip(tr("New tab"));
ensurePolished();
resize( QSize(m_width, m_height) );
}
QSize AddTabButton::sizeHint() const
{
ensurePolished();
return QSize(m_width, m_height);
}
void AddTabButton::paintEvent(QPaintEvent *)
{
// adapted from qt5/qtbase/src/widgets/qtabbar.cpp: void CloseButton::paintEvent(QPaintEvent *)
QPainter p(this);
QStyleOption opt;
opt.init(this);
if ( (opt.state & QStyle::State_Enabled) && (opt.state & QStyle::State_MouseOver) && m_hoverEnabled )
{
style()->drawPrimitive(QStyle::PE_PanelButtonCommand, &opt, &p, this);
}
// adapted from qt5/qtbase/src/widgets/styles/qfusionstyle.cpp: drawPrimitive(QStyle::PE_IndicatorTabClose, ...
if ( m_newTabIcon.isNull() )
{
m_newTabIcon = QIcon::fromTheme(QLatin1String("list-add-symbolic.symbolic"));
}
int width = style()->pixelMetric(QStyle::PM_TabCloseIndicatorWidth, nullptr, this);
int height = style()->pixelMetric(QStyle::PM_TabCloseIndicatorHeight, nullptr, this);
QPixmap pixmap = m_newTabIcon.pixmap(QSize(width, height), QIcon::Normal, QIcon::On);
style()->drawItemPixmap(&p, opt.rect, Qt::AlignCenter, pixmap);
}
void AddTabButton::setHoverEnabled(bool enabled)
{
m_hoverEnabled = enabled;
}