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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "layoutitem.h"
#include <QGradient>
#include <QPainter>
//! [0]
LayoutItem::LayoutItem(QGraphicsItem *parent)
: QGraphicsLayoutItem(), QGraphicsItem(parent),
m_pix(QPixmap(QLatin1String(":/images/block.png")))
{
setGraphicsItem(this);
}
//! [0]
//! [1]
void LayoutItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget)
{
Q_UNUSED(widget);
Q_UNUSED(option);
QRectF frame(QPointF(0, 0), geometry().size());
const QSize pmSize = m_pix.size();
QGradientStops stops;
//! [1]
//! [2]
// paint a background rect (with gradient)
QLinearGradient gradient(frame.topLeft(), frame.topLeft() + QPointF(200,200));
stops << QGradientStop(0.0, QColor(60, 60, 60));
stops << QGradientStop(frame.height() / 2 / frame.height(), QColor(102, 176, 54));
//stops << QGradientStop(((frame.height() + h)/2 )/frame.height(), QColor(157, 195, 55));
stops << QGradientStop(1.0, QColor(215, 215, 215));
gradient.setStops(stops);
painter->setBrush(QBrush(gradient));
painter->drawRoundedRect(frame, 10.0, 10.0);
// paint a rect around the pixmap (with gradient)
QPointF pixpos = frame.center() - (QPointF(pmSize.width(), pmSize.height()) / 2);
QRectF innerFrame(pixpos, pmSize);
innerFrame.adjust(-4, -4, 4, 4);
gradient.setStart(innerFrame.topLeft());
gradient.setFinalStop(innerFrame.bottomRight());
stops.clear();
stops << QGradientStop(0.0, QColor(215, 255, 200));
stops << QGradientStop(0.5, QColor(102, 176, 54));
stops << QGradientStop(1.0, QColor(0, 0, 0));
gradient.setStops(stops);
painter->setBrush(QBrush(gradient));
painter->drawRoundedRect(innerFrame, 10.0, 10.0);
painter->drawPixmap(pixpos, m_pix);
}
//! [2]
//! [3]
QRectF LayoutItem::boundingRect() const
{
return QRectF(QPointF(0, 0), geometry().size());
}
//! [3]
//! [4]
void LayoutItem::setGeometry(const QRectF &geom)
{
prepareGeometryChange();
QGraphicsLayoutItem::setGeometry(geom);
setPos(geom.topLeft());
}
//! [4]
//! [5]
QSizeF LayoutItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
switch (which) {
case Qt::MinimumSize:
case Qt::PreferredSize:
// Do not allow a size smaller than the pixmap with two frames around it.
return m_pix.size() + QSize(12, 12);
case Qt::MaximumSize:
return QSizeF(1000,1000);
default:
break;
}
return constraint;
}
//! [5]
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