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Diffstat (limited to 'examples/widgets/symbianvibration/vibrationsurface.cpp')
-rw-r--r-- | examples/widgets/symbianvibration/vibrationsurface.cpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/examples/widgets/symbianvibration/vibrationsurface.cpp b/examples/widgets/symbianvibration/vibrationsurface.cpp new file mode 100644 index 0000000..e06241d --- /dev/null +++ b/examples/widgets/symbianvibration/vibrationsurface.cpp @@ -0,0 +1,157 @@ +/**************************************************************************** +** +** 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 <QtGui/QPainter> +#include <QtCore/QLine> +#include <QtGui/QMouseEvent> +#include <QtGui/QScreen> +#include <QtCore/QRect> +#include <QtGui/QColor> + +#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] + |