diff options
Diffstat (limited to 'tests/manual/examples/widgets/itemviews/pixelator/pixeldelegate.cpp')
-rw-r--r-- | tests/manual/examples/widgets/itemviews/pixelator/pixeldelegate.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/itemviews/pixelator/pixeldelegate.cpp b/tests/manual/examples/widgets/itemviews/pixelator/pixeldelegate.cpp new file mode 100644 index 0000000000..3a104cd2c2 --- /dev/null +++ b/tests/manual/examples/widgets/itemviews/pixelator/pixeldelegate.cpp @@ -0,0 +1,68 @@ +// 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] |