6f4bc3942d
Cleanup GraphicsView examples with the help of clang-tidy - modernize-use-nullptr - modernize-use-default-member-init - modernize-use-override.IgnoreDestructors - Some QList -> QVector changes - use nullptr - use normalized includes, remove unused includes - fix style Change-Id: I79347e55bfde52f6ae7749cc7093fbd442044020 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
138 lines
4.8 KiB
C++
138 lines
4.8 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#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]
|