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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "pixeldelegate.h"
#include <QPainter>
//! [0]
PixelDelegate::PixelDelegate(QObject *parent)
: QAbstractItemDelegate(parent), pixelSize(12)
{}
//! [0]
//! [1]
void PixelDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
//! [2]
if (option.state & QStyle::State_Selected)
painter->fillRect(option.rect, option.palette.highlight());
//! [1]
//! [3]
const int size = qMin(option.rect.width(), option.rect.height());
//! [3] //! [4]
const int brightness = index.model()->data(index, Qt::DisplayRole).toInt();
const double radius = (size / 2.0) - (brightness / 255.0 * size / 2.0);
if (qFuzzyIsNull(radius))
return;
//! [4]
//! [5]
painter->save();
//! [5] //! [6]
painter->setRenderHint(QPainter::Antialiasing, true);
//! [6] //! [7]
painter->setPen(Qt::NoPen);
//! [7] //! [8]
if (option.state & QStyle::State_Selected)
//! [8] //! [9]
painter->setBrush(option.palette.highlightedText());
else
//! [2]
painter->setBrush(option.palette.text());
//! [9]
//! [10]
painter->drawEllipse(QRectF(option.rect.x() + option.rect.width() / 2 - radius,
option.rect.y() + option.rect.height() / 2 - radius,
2 * radius, 2 * radius));
painter->restore();
}
//! [10]
//! [11]
QSize PixelDelegate::sizeHint(const QStyleOptionViewItem & /* option */,
const QModelIndex & /* index */) const
{
return QSize(pixelSize, pixelSize);
}
//! [11]
//! [12]
void PixelDelegate::setPixelSize(int size)
{
pixelSize = size;
}
//! [12]
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