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/****************************************************************************
**
** Copyright (C) 2020 Uwe Kindler
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or (at your option) any later version.
** The licenses are as published by the Free Software Foundation
** and appearing in the file LICENSE.LGPLv21 included in the packaging
** of this file. Please review the following information to ensure
** the GNU Lesser General Public License version 2.1 requirements
** will be met: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "elidinglabel.h"
#include <QMouseEvent>
namespace ADS {
/**
* Private data of public ClickableLabel
*/
struct ElidingLabelPrivate
{
ElidingLabel *q;
Qt::TextElideMode m_elideMode = Qt::ElideNone;
QString m_text;
bool m_isElided = false;
ElidingLabelPrivate(ElidingLabel *parent)
: q(parent)
{}
void elideText(int width);
/**
* Convenience function to check if the
*/
bool isModeElideNone() const { return Qt::ElideNone == m_elideMode; }
};
void ElidingLabelPrivate::elideText(int width)
{
if (isModeElideNone())
return;
QFontMetrics fm = q->fontMetrics();
QString str = fm.elidedText(m_text, m_elideMode, width - q->margin() * 2 - q->indent());
if (str == QChar(0x2026))
str = m_text.at(0);
bool wasElided = m_isElided;
m_isElided = str != m_text;
if (m_isElided != wasElided)
emit q->elidedChanged(m_isElided);
q->QLabel::setText(str);
}
ElidingLabel::ElidingLabel(QWidget *parent, Qt::WindowFlags flags)
: QLabel(parent, flags)
, d(new ElidingLabelPrivate(this))
{}
ElidingLabel::ElidingLabel(const QString &text, QWidget *parent, Qt::WindowFlags flags)
: QLabel(text, parent, flags)
, d(new ElidingLabelPrivate(this))
{
d->m_text = text;
internal::setToolTip(this, text);
}
ElidingLabel::~ElidingLabel()
{
delete d;
}
Qt::TextElideMode ElidingLabel::elideMode() const
{
return d->m_elideMode;
}
void ElidingLabel::setElideMode(Qt::TextElideMode mode)
{
d->m_elideMode = mode;
d->elideText(size().width());
}
bool ElidingLabel::isElided() const
{
return d->m_isElided;
}
void ElidingLabel::mouseReleaseEvent(QMouseEvent *event)
{
Super::mouseReleaseEvent(event);
if (event->button() != Qt::LeftButton) {
return;
}
emit clicked();
}
void ElidingLabel::mouseDoubleClickEvent(QMouseEvent *event)
{
Q_UNUSED(event)
emit doubleClicked();
Super::mouseDoubleClickEvent(event);
}
void ElidingLabel::resizeEvent(QResizeEvent *event)
{
if (!d->isModeElideNone()) {
d->elideText(event->size().width());
}
Super::resizeEvent(event);
}
QSize ElidingLabel::minimumSizeHint() const
{
if (pixmap() != nullptr || d->isModeElideNone()) {
return QLabel::minimumSizeHint();
}
const QFontMetrics &fm = fontMetrics();
#if (QT_VERSION >= QT_VERSION_CHECK(5, 11, 0))
QSize size(fm.horizontalAdvance(d->m_text.left(2) + "…"), fm.height());
#else
QSize size(fm.width(d->m_text.left(2) + "…"), fm.height());
#endif
return size;
}
QSize ElidingLabel::sizeHint() const
{
if (pixmap() != nullptr || d->isModeElideNone()) {
return QLabel::sizeHint();
}
const QFontMetrics &fm = fontMetrics();
#if (QT_VERSION >= QT_VERSION_CHECK(5, 11, 0))
QSize size(fm.horizontalAdvance(d->m_text), QLabel::sizeHint().height());
#else
QSize size(fm.width(d->m_text), QLabel::sizeHint().height());
#endif
return size;
}
void ElidingLabel::setText(const QString &text)
{
if (d->isModeElideNone()) {
Super::setText(text);
} else {
d->m_text = text;
internal::setToolTip(this, text);
d->elideText(this->size().width());
}
}
QString ElidingLabel::text() const
{
return d->m_text;
}
} // namespace ADS
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