diff -r 41300fa6a67c -r f7bc934e204c util/examples/effects/blurpicker/blurpicker.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/util/examples/effects/blurpicker/blurpicker.cpp Wed Mar 31 11:06:36 2010 +0300 @@ -0,0 +1,139 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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 + +#include "blureffect.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); + static_cast(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); + 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(); + } +}