diff -r 000000000000 -r 1918ee327afb examples/graphicsview/basicgraphicslayouts/layoutitem.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/examples/graphicsview/basicgraphicslayouts/layoutitem.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,131 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "layoutitem.h" + +//! [0] +LayoutItem::LayoutItem(QGraphicsItem *parent/* = 0*/) + : QGraphicsLayoutItem(), QGraphicsItem(parent) +{ + m_pix = new QPixmap(QLatin1String(":/images/block.png")); + setGraphicsItem(this); +} +//! [0] + +LayoutItem::~LayoutItem() +{ + delete m_pix; +} + +//! [1] +void LayoutItem::paint(QPainter *painter, + const QStyleOptionGraphicsItem *option, QWidget *widget /*= 0*/) +{ + Q_UNUSED(widget); + Q_UNUSED(option); + + QRectF frame(QPointF(0,0), geometry().size()); + qreal w = m_pix->width(); + qreal h = m_pix->height(); + 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(w, h)/2); + QRectF innerFrame(pixpos, QSizeF(w, h)); + 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]