108 lines
3.6 KiB
C++
108 lines
3.6 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 "pixeldelegate.h"
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#include <QPainter>
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//! [0]
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PixelDelegate::PixelDelegate(QObject *parent)
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: QAbstractItemDelegate(parent)
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{
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pixelSize = 12;
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}
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//! [0]
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//! [1]
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void PixelDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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//! [2]
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if (option.state & QStyle::State_Selected)
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painter->fillRect(option.rect, option.palette.highlight());
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//! [1]
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//! [3]
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int size = qMin(option.rect.width(), option.rect.height());
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//! [3] //! [4]
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int brightness = index.model()->data(index, Qt::DisplayRole).toInt();
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double radius = (size / 2.0) - (brightness / 255.0 * size / 2.0);
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if (radius == 0.0)
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return;
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//! [4]
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//! [5]
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painter->save();
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//! [5] //! [6]
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painter->setRenderHint(QPainter::Antialiasing, true);
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//! [6] //! [7]
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painter->setPen(Qt::NoPen);
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//! [7] //! [8]
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if (option.state & QStyle::State_Selected)
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//! [8] //! [9]
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painter->setBrush(option.palette.highlightedText());
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else
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//! [2]
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painter->setBrush(option.palette.text());
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//! [9]
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//! [10]
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painter->drawEllipse(QRectF(option.rect.x() + option.rect.width() / 2 - radius,
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option.rect.y() + option.rect.height() / 2 - radius,
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2 * radius, 2 * radius));
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painter->restore();
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}
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//! [10]
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//! [11]
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QSize PixelDelegate::sizeHint(const QStyleOptionViewItem & /* option */,
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const QModelIndex & /* index */) const
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{
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return QSize(pixelSize, pixelSize);
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}
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//! [11]
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//! [12]
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void PixelDelegate::setPixelSize(int size)
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{
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pixelSize = size;
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}
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//! [12]
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