mirror of
https://github.com/crystalidea/qt6windows7.git
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91 lines
2.6 KiB
C++
91 lines
2.6 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 "layoutitem.h"
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#include <QGradient>
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#include <QPainter>
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//! [0]
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LayoutItem::LayoutItem(QGraphicsItem *parent)
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: QGraphicsLayoutItem(), QGraphicsItem(parent),
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m_pix(QPixmap(QLatin1String(":/images/block.png")))
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{
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setGraphicsItem(this);
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}
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//! [0]
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//! [1]
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void LayoutItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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Q_UNUSED(widget);
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Q_UNUSED(option);
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QRectF frame(QPointF(0, 0), geometry().size());
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const QSize pmSize = m_pix.size();
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QGradientStops stops;
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//! [1]
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//! [2]
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// paint a background rect (with gradient)
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QLinearGradient gradient(frame.topLeft(), frame.topLeft() + QPointF(200,200));
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stops << QGradientStop(0.0, QColor(60, 60, 60));
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stops << QGradientStop(frame.height() / 2 / frame.height(), QColor(102, 176, 54));
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//stops << QGradientStop(((frame.height() + h)/2 )/frame.height(), QColor(157, 195, 55));
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stops << QGradientStop(1.0, QColor(215, 215, 215));
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gradient.setStops(stops);
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painter->setBrush(QBrush(gradient));
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painter->drawRoundedRect(frame, 10.0, 10.0);
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// paint a rect around the pixmap (with gradient)
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QPointF pixpos = frame.center() - (QPointF(pmSize.width(), pmSize.height()) / 2);
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QRectF innerFrame(pixpos, pmSize);
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innerFrame.adjust(-4, -4, 4, 4);
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gradient.setStart(innerFrame.topLeft());
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gradient.setFinalStop(innerFrame.bottomRight());
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stops.clear();
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stops << QGradientStop(0.0, QColor(215, 255, 200));
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stops << QGradientStop(0.5, QColor(102, 176, 54));
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stops << QGradientStop(1.0, QColor(0, 0, 0));
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gradient.setStops(stops);
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painter->setBrush(QBrush(gradient));
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painter->drawRoundedRect(innerFrame, 10.0, 10.0);
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painter->drawPixmap(pixpos, m_pix);
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}
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//! [2]
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//! [3]
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QRectF LayoutItem::boundingRect() const
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{
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return QRectF(QPointF(0, 0), geometry().size());
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}
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//! [3]
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//! [4]
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void LayoutItem::setGeometry(const QRectF &geom)
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{
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prepareGeometryChange();
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QGraphicsLayoutItem::setGeometry(geom);
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setPos(geom.topLeft());
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}
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//! [4]
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//! [5]
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QSizeF LayoutItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
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{
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switch (which) {
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case Qt::MinimumSize:
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case Qt::PreferredSize:
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// Do not allow a size smaller than the pixmap with two frames around it.
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return m_pix.size() + QSize(12, 12);
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case Qt::MaximumSize:
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return QSizeF(1000,1000);
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default:
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break;
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}
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return constraint;
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}
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//! [5]
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