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Diffstat (limited to 'examples/opengl/hellogl_es/bubble.cpp')
-rw-r--r-- | examples/opengl/hellogl_es/bubble.cpp | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/examples/opengl/hellogl_es/bubble.cpp b/examples/opengl/hellogl_es/bubble.cpp deleted file mode 100644 index 167d9abd92..0000000000 --- a/examples/opengl/hellogl_es/bubble.cpp +++ /dev/null @@ -1,139 +0,0 @@ -/**************************************************************************** -** -** 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 <QtGui> - -#include "bubble.h" - -Bubble::Bubble(const QPointF &position, qreal radius, const QPointF &velocity) - : position(position), vel(velocity), radius(radius) -{ - innerColor = randomColor(); - outerColor = randomColor(); - cache = 0; - updateBrush(); -} - -//! [0] -void Bubble::updateCache() -{ - if (cache) - delete cache; - cache = new QImage(qRound(radius * 2 + 2), qRound(radius * 2 + 2), QImage::Format_ARGB32); - cache->fill(0x00000000); - QPainter p(cache); - p.setRenderHint(QPainter::HighQualityAntialiasing); - QPen pen(Qt::white); - pen.setWidth(2); - p.setPen(pen); - p.setBrush(brush); - p.drawEllipse(0, 0, int(2*radius), int(2*radius)); -} -//! [0] - -Bubble::~Bubble() -{ - if (cache) - delete cache; -} - -void Bubble::updateBrush() -{ - QRadialGradient gradient(QPointF(radius, radius), radius, - QPointF(radius*0.5, radius*0.5)); - - gradient.setColorAt(0, QColor(255, 255, 255, 255)); - gradient.setColorAt(0.25, innerColor); - gradient.setColorAt(1, outerColor); - brush = QBrush(gradient); - updateCache(); -} - -//! [1] -void Bubble::drawBubble(QPainter *painter) -{ - painter->save(); - painter->translate(position.x() - radius, position.y() - radius); - painter->setOpacity(0.8); - painter->drawImage(0, 0, *cache); - painter->restore(); -} -//! [1] - -QColor Bubble::randomColor() -{ - int red = int(185 + 70.0*qrand()/(RAND_MAX+1.0)); - int green = int(185 + 70.0*qrand()/(RAND_MAX+1.0)); - int blue = int(205 + 50.0*qrand()/(RAND_MAX+1.0)); - int alpha = int(91 + 100.0*qrand()/(RAND_MAX+1.0)); - - return QColor(red, green, blue, alpha); -} - -void Bubble::move(const QRect &bbox) -{ - position += vel; - qreal leftOverflow = position.x() - radius - bbox.left(); - qreal rightOverflow = position.x() + radius - bbox.right(); - qreal topOverflow = position.y() - radius - bbox.top(); - qreal bottomOverflow = position.y() + radius - bbox.bottom(); - - if (leftOverflow < 0.0) { - position.setX(position.x() - 2 * leftOverflow); - vel.setX(-vel.x()); - } else if (rightOverflow > 0.0) { - position.setX(position.x() - 2 * rightOverflow); - vel.setX(-vel.x()); - } - - if (topOverflow < 0.0) { - position.setY(position.y() - 2 * topOverflow); - vel.setY(-vel.y()); - } else if (bottomOverflow > 0.0) { - position.setY(position.y() - 2 * bottomOverflow); - vel.setY(-vel.y()); - } -} - -QRectF Bubble::rect() -{ - return QRectF(position.x() - radius, position.y() - radius, - 2 * radius, 2 * radius); -} |