/**************************************************************************** ** ** 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 QtCore module 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 "vibrationsurface.h" #include #include #include #include #include #include #include "xqvibra.h" //! [4] const int NumberOfLevels = 10; const double IntensityFactor = XQVibra::MaxIntensity / NumberOfLevels; //! [4] VibrationSurface::VibrationSurface(XQVibra *vibra, QWidget *parent) : QWidget(parent), vibra(vibra), lastIntensity(0) { } //! [0] void VibrationSurface::mousePressEvent(QMouseEvent *event) { applyIntensity(event->x(), event->y()); vibra->start(); } //! [0] //! [1] void VibrationSurface::mouseMoveEvent(QMouseEvent *event) { applyIntensity(event->x(), event->y()); } //! [1] //! [2] void VibrationSurface::mouseReleaseEvent(QMouseEvent *) { vibra->stop(); } //! [2] //! [5] void VibrationSurface::paintEvent(QPaintEvent *) { QPainter painter(this); QRect rect = geometry(); int dx = 0, dy = 0; if (height() > width()) { dy = height() / NumberOfLevels; rect.setHeight(dy); } else { dx = width() / NumberOfLevels; rect.setWidth(dx); } //! [5] //! [6] for (int i = 0; i < NumberOfLevels; i++) { int x = i * dx; int y = i * dy; int intensity = getIntensity(x, y); QColor color = QColor(40, 80, 10).lighter(100 + intensity); rect.moveTo(x, y); painter.fillRect(rect, color); painter.setPen(color.darker()); painter.drawText(rect, Qt::AlignCenter, QString::number(intensity)); } } //! [6] //! [7] int VibrationSurface::getIntensity(int x, int y) { int level; int coord; if (height() > width()) { level = height() / NumberOfLevels; coord = y; } else { level = width() / NumberOfLevels; coord = x; } if (level == 0) { return 0; } //! [7] //! [8] int intensity = (coord / level + 1) * IntensityFactor; if (intensity < 0) { intensity = 0; } else if (intensity > XQVibra::MaxIntensity) { intensity = XQVibra::MaxIntensity; } return intensity; } //! [8] //! [3] void VibrationSurface::applyIntensity(int x, int y) { int intensity = getIntensity(x, y); if (intensity != lastIntensity) { vibra->setIntensity(intensity); lastIntensity = intensity; } } //! [3]