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/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QLabel>
#include <QPainter>
#include <QPushButton>
#include <QApplication>
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsWidget>
#include <QGraphicsProxyWidget>
#include <QGraphicsAnchorLayout>
#include <QGraphicsSceneResizeEvent>
class PixmapWidget : public QGraphicsLayoutItem
{
public:
PixmapWidget(const QPixmap &pix) : QGraphicsLayoutItem()
{
original = new QGraphicsPixmapItem(pix);
setGraphicsItem(original);
original->show();
r = QRectF(QPointF(0, 0), pix.size());
}
~PixmapWidget()
{
setGraphicsItem(0);
delete original;
}
void setZValue(qreal z)
{
original->setZValue(z);
}
void setGeometry (const QRectF &rect)
{
original->scale(rect.width() / r.width(), rect.height() / r.height());
original->setPos(rect.x(), rect.y());
r = rect;
}
protected:
QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const
{
Q_UNUSED(constraint);
QSizeF sh;
switch (which) {
case Qt::MinimumSize:
sh = QSizeF(0, 0);
break;
case Qt::PreferredSize:
sh = QSizeF(50, 50);
break;
case Qt::MaximumSize:
sh = QSizeF(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
break;
default:
break;
}
return sh;
}
private:
QGraphicsPixmapItem *original;
QRectF r;
};
class PlaceWidget : public QGraphicsWidget
{
Q_OBJECT
public:
PlaceWidget(const QPixmap &pix) : QGraphicsWidget(), original(pix), scaled(pix)
{
}
void paint(QPainter *painter, const QStyleOptionGraphicsItem*, QWidget*)
{
QPointF reflection = QPointF();
reflection.setY(scaled.height() + 2);
painter->drawPixmap(QPointF(), scaled);
QPixmap tmp(scaled.size());
tmp.fill(Qt::transparent);
QPainter p(&tmp);
// create gradient
QPoint p1(scaled.width() / 2, 0);
QPoint p2(scaled.width() / 2, scaled.height());
QLinearGradient linearGrad(p1, p2);
linearGrad.setColorAt(0, QColor(0, 0, 0, 0));
linearGrad.setColorAt(0.65, QColor(0, 0, 0, 127));
linearGrad.setColorAt(1, QColor(0, 0, 0, 255));
// apply 'mask'
p.setBrush(linearGrad);
p.fillRect(0, 0, tmp.width(), tmp.height(), QBrush(linearGrad));
p.fillRect(0, 0, tmp.width(), tmp.height(), QBrush(linearGrad));
// paint the image flipped
p.setCompositionMode(QPainter::CompositionMode_DestinationOver);
p.drawPixmap(0, 0, QPixmap::fromImage(scaled.toImage().mirrored(false, true)));
p.end();
painter->drawPixmap(reflection, tmp);
}
void resizeEvent(QGraphicsSceneResizeEvent *event)
{
QSize newSize = event->newSize().toSize();
newSize.setHeight(newSize.height() / 2);
scaled = original.scaled(newSize);
}
QRectF boundingRect() const
{
QSize size(scaled.width(), scaled.height() * 2 + 2);
return QRectF(QPointF(0, 0), size);
}
private:
QPixmap original;
QPixmap scaled;
};
int main(int argc, char **argv)
{
Q_INIT_RESOURCE(weatheranchorlayout);
QApplication app(argc, argv);
QGraphicsScene scene;
scene.setSceneRect(0, 0, 800, 480);
// pixmaps widgets
PixmapWidget *title = new PixmapWidget(QPixmap(":/images/title.jpg"));
PlaceWidget *place = new PlaceWidget(QPixmap(":/images/place.jpg"));
PixmapWidget *details = new PixmapWidget(QPixmap(":/images/5days.jpg"));
PixmapWidget *sunnyWeather = new PixmapWidget(QPixmap(":/images/weather-few-clouds.png"));
PixmapWidget *tabbar = new PixmapWidget(QPixmap(":/images/tabbar.jpg"));
// setup sizes
title->setPreferredSize(QSizeF(348, 45));
title->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
place->setPreferredSize(QSizeF(96, 72));
place->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
details->setMinimumSize(QSizeF(200, 112));
details->setPreferredSize(QSizeF(200, 112));
details->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
tabbar->setPreferredSize(QSizeF(70, 24));
tabbar->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
sunnyWeather->setPreferredSize(QSizeF(128, 97));
sunnyWeather->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
sunnyWeather->setZValue(9999);
// start anchor layout
QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
l->setSpacing(0);
// setup the main widget
QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window);
QPalette p;
p.setColor(QPalette::Window, Qt::black);
w->setPalette(p);
w->setPos(20, 20);
w->setLayout(l);
// vertical anchors
QGraphicsAnchor *anchor = l->addAnchor(title, Qt::AnchorTop, l, Qt::AnchorTop);
anchor = l->addAnchor(place, Qt::AnchorTop, title, Qt::AnchorBottom);
anchor->setSpacing(12);
anchor = l->addAnchor(place, Qt::AnchorBottom, l, Qt::AnchorBottom);
anchor->setSpacing(12);
anchor = l->addAnchor(sunnyWeather, Qt::AnchorTop, title, Qt::AnchorTop);
anchor = l->addAnchor(sunnyWeather, Qt::AnchorBottom, l, Qt::AnchorVerticalCenter);
anchor = l->addAnchor(tabbar, Qt::AnchorTop, title, Qt::AnchorBottom);
anchor->setSpacing(5);
anchor = l->addAnchor(details, Qt::AnchorTop, tabbar, Qt::AnchorBottom);
anchor->setSpacing(2);
anchor = l->addAnchor(details, Qt::AnchorBottom, l, Qt::AnchorBottom);
anchor->setSpacing(12);
// horizontal anchors
anchor = l->addAnchor(l, Qt::AnchorLeft, title, Qt::AnchorLeft);
anchor = l->addAnchor(title, Qt::AnchorRight, l, Qt::AnchorRight);
anchor = l->addAnchor(place, Qt::AnchorLeft, l, Qt::AnchorLeft);
anchor->setSpacing(15);
anchor = l->addAnchor(place, Qt::AnchorRight, details, Qt::AnchorLeft);
anchor->setSpacing(35);
anchor = l->addAnchor(sunnyWeather, Qt::AnchorLeft, place, Qt::AnchorHorizontalCenter);
anchor = l->addAnchor(sunnyWeather, Qt::AnchorRight, l, Qt::AnchorHorizontalCenter);
anchor = l->addAnchor(tabbar, Qt::AnchorHorizontalCenter, details, Qt::AnchorHorizontalCenter);
anchor = l->addAnchor(details, Qt::AnchorRight, l, Qt::AnchorRight);
// QGV setup
scene.addItem(w);
scene.setBackgroundBrush(Qt::white);
QGraphicsView *view = new QGraphicsView(&scene);
view->show();
return app.exec();
}
#include "main.moc"
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