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-rw-r--r--examples/effects/customshader/blurpicker.cpp144
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diff --git a/examples/effects/customshader/blurpicker.cpp b/examples/effects/customshader/blurpicker.cpp
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-/****************************************************************************
-**
-** 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 "blurpicker.h"
-
-#include <QtGui>
-
-#include "blureffect.h"
-#include "customshadereffect.h"
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0), m_animation(this, "index")
-{
- setBackgroundBrush(QPixmap(":/images/background.jpg"));
- setScene(new QGraphicsScene(this));
-
- setupScene();
- setIndex(0);
-
- m_animation.setDuration(400);
- m_animation.setEasingCurve(QEasingCurve::InOutSine);
-
- setRenderHint(QPainter::Antialiasing, true);
- setFrameStyle(QFrame::NoFrame);
-}
-
-qreal BlurPicker::index() const
-{
- return m_index;
-}
-
-void BlurPicker::setIndex(qreal index)
-{
- m_index = index;
-
- qreal baseline = 0;
- for (int i = 0; i < m_icons.count(); ++i) {
- QGraphicsItem *icon = m_icons[i];
- qreal a = ((i + m_index) * 2 * M_PI) / m_icons.count();
- qreal xs = 170 * sin(a);
- qreal ys = 100 * cos(a);
- QPointF pos(xs, ys);
- pos = QTransform().rotate(-20).map(pos);
- pos -= QPointF(40, 40);
- icon->setPos(pos);
- baseline = qMax(baseline, ys);
- if (i != 3)
- static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline);
- }
-
- scene()->update();
-}
-
-void BlurPicker::setupScene()
-{
- scene()->setSceneRect(-200, -120, 400, 240);
-
- QStringList names;
- names << ":/images/accessories-calculator.png";
- names << ":/images/accessories-text-editor.png";
- names << ":/images/help-browser.png";
- names << ":/images/internet-group-chat.png";
- names << ":/images/internet-mail.png";
- names << ":/images/internet-web-browser.png";
- names << ":/images/office-calendar.png";
- names << ":/images/system-users.png";
-
- for (int i = 0; i < names.count(); i++) {
- QPixmap pixmap(names[i]);
- QGraphicsPixmapItem *icon = scene()->addPixmap(pixmap);
- icon->setZValue(1);
- if (i == 3)
- icon->setGraphicsEffect(new CustomShaderEffect());
- else
- icon->setGraphicsEffect(new BlurEffect(icon));
- m_icons << icon;
- }
-
- QGraphicsPixmapItem *bg = scene()->addPixmap(QPixmap(":/images/background.jpg"));
- bg->setZValue(0);
- bg->setPos(-200, -150);
-}
-
-void BlurPicker::keyPressEvent(QKeyEvent *event)
-{
- int delta = 0;
- switch (event->key())
- {
- case Qt::Key_Left:
- delta = -1;
- break;
- case Qt::Key_Right:
- delta = 1;
- break;
- default:
- break;
- }
- if (m_animation.state() == QAbstractAnimation::Stopped && delta) {
- m_animation.setEndValue(m_index + delta);
- m_animation.start();
- event->accept();
- }
-}