89 lines
3.2 KiB
C++
89 lines
3.2 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 the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "draglabel.h"
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#include <QtWidgets>
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//! [0]
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DragLabel::DragLabel(const QString &text, QWidget *parent)
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: QLabel(parent)
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{
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QFontMetrics metric(font());
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QSize size = metric.size(Qt::TextSingleLine, text);
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QImage image(size.width() + 12, size.height() + 12, QImage::Format_ARGB32_Premultiplied);
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image.fill(qRgba(0, 0, 0, 0));
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QFont font;
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font.setStyleStrategy(QFont::ForceOutline);
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//! [0]
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//! [1]
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QLinearGradient gradient(0, 0, 0, image.height()-1);
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gradient.setColorAt(0.0, Qt::white);
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gradient.setColorAt(0.2, QColor(200, 200, 255));
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gradient.setColorAt(0.8, QColor(200, 200, 255));
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gradient.setColorAt(1.0, QColor(127, 127, 200));
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QPainter painter;
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painter.begin(&image);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setBrush(gradient);
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painter.drawRoundedRect(QRectF(0.5, 0.5, image.width()-1, image.height()-1),
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25, 25, Qt::RelativeSize);
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painter.setFont(font);
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painter.setBrush(Qt::black);
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painter.drawText(QRect(QPoint(6, 6), size), Qt::AlignCenter, text);
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painter.end();
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//! [1]
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//! [2]
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setPixmap(QPixmap::fromImage(image));
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m_labelText = text;
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}
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//! [2]
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QString DragLabel::labelText() const
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{
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return m_labelText;
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}
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