mirror of
https://github.com/crystalidea/qt6windows7.git
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69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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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), 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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const int size = qMin(option.rect.width(), option.rect.height());
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//! [3] //! [4]
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const int brightness = index.model()->data(index, Qt::DisplayRole).toInt();
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const double radius = (size / 2.0) - (brightness / 255.0 * size / 2.0);
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if (qFuzzyIsNull(radius))
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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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