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/***************************************************************************
* Copyright (C) 2008 by Peter Penz <[email protected]> *
* *
* 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 2 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "metatextlabel.h"
#include <kglobalsettings.h>
#include <klocale.h>
#include <QPainter>
#include <QTextLayout>
#include <QTextLine>
#include <kdebug.h>
MetaTextLabel::MetaTextLabel(QWidget* parent) :
QWidget(parent),
m_metaInfos()
{
setFont(KGlobalSettings::smallestReadableFont());
setMinimumHeight(0);
}
MetaTextLabel::~MetaTextLabel()
{
}
void MetaTextLabel::clear()
{
setMinimumHeight(0);
m_metaInfos.clear();
update();
}
void MetaTextLabel::add(const QString& labelText, const QString& infoText)
{
MetaInfo metaInfo;
metaInfo.label = labelText;
metaInfo.info = infoText;
m_metaInfos.append(metaInfo);
setMinimumHeight(minimumHeight() + requiredHeight(metaInfo));
update();
}
void MetaTextLabel::paintEvent(QPaintEvent* event)
{
QWidget::paintEvent(event);
QPainter painter(this);
const QColor infoColor = palette().color(QPalette::Foreground);
QColor labelColor = infoColor;
labelColor.setAlpha(128);
int y = 0;
const int infoWidth = width() / 2;
const int labelWidth = infoWidth - 2 * Spacing;
const int infoX = infoWidth;
const int maxHeight = fontMetrics().height() * 5;
QRect boundingRect;
foreach (const MetaInfo& metaInfo, m_metaInfos) {
// draw label (e. g. "Date:")
painter.setPen(labelColor);
painter.drawText(0, y, labelWidth, maxHeight,
Qt::AlignTop | Qt::AlignRight | Qt::TextWordWrap,
metaInfo.label);
// draw information (e. g. "2008-11-09 20:12")
painter.setPen(infoColor);
painter.drawText(infoX, y, infoWidth, maxHeight,
Qt::AlignTop | Qt::AlignLeft | Qt::TextWordWrap,
metaInfo.info,
&boundingRect);
y += boundingRect.height() + Spacing;
}
}
int MetaTextLabel::requiredHeight(const MetaInfo& metaInfo) const
{
QTextOption textOption;
textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
qreal height = 0;
const int leading = fontMetrics().leading();
const int availableWidth = width() / 2;
QTextLayout textLayout(metaInfo.info);
textLayout.setFont(font());
textLayout.setTextOption(textOption);
textLayout.beginLayout();
QTextLine line = textLayout.createLine();
while (line.isValid()) {
line.setLineWidth(availableWidth);
height += leading;
height += line.height();
line = textLayout.createLine();
}
textLayout.endLayout();
return static_cast<int>(height) + Spacing;
}
#include "metatextlabel.moc"
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