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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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 "elidedlabel.h"
+
+#include <QPainter>
+#include <QTextLayout>
+#include <QDebug>
+
+//! [0]
+ElidedLabel::ElidedLabel(const QString &text, QWidget *parent)
+ : QFrame(parent)
+ , elided(false)
+ , content(text)
+{
+ setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+}
+//! [0]
+
+//! [1]
+void ElidedLabel::setText(const QString &newText)
+{
+ content = newText;
+ update();
+}
+//! [1]
+
+//! [2]
+void ElidedLabel::paintEvent(QPaintEvent *event)
+{
+ QFrame::paintEvent(event);
+
+ QPainter painter(this);
+ QFontMetrics fontMetrics = painter.fontMetrics();
+
+ bool didElide = false;
+ int lineSpacing = fontMetrics.lineSpacing();
+ int y = 0;
+
+ QTextLayout textLayout(content, painter.font());
+ textLayout.beginLayout();
+ forever {
+ QTextLine line = textLayout.createLine();
+
+ if (!line.isValid())
+ break;
+
+ line.setLineWidth(width());
+ int nextLineY = y + lineSpacing;
+
+ if (height() >= nextLineY + lineSpacing) {
+ line.draw(&painter, QPoint(0, y));
+ y = nextLineY;
+ //! [2]
+ //! [3]
+ } else {
+ QString lastLine = content.mid(line.textStart());
+ QString elidedLastLine = fontMetrics.elidedText(lastLine, Qt::ElideRight, width());
+ painter.drawText(QPoint(0, y + fontMetrics.ascent()), elidedLastLine);
+ line = textLayout.createLine();
+ didElide = line.isValid();
+ break;
+ }
+ }
+ textLayout.endLayout();
+ //! [3]
+
+ //! [4]
+ if (didElide != elided) {
+ elided = didElide;
+ emit elisionChanged(didElide);
+ }
+}
+//! [4]