qt5base-lts/examples/widgets/symbianvibration/vibrationsurface.cpp
David Boddie 4686b7af03 Doc: Added missing license headers for documentation and examples.
Change-Id: I696f6ce2ee9b6055c549e615de952773d171f3e7
Reviewed-on: http://codereview.qt.nokia.com/408
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: David Boddie
2011-07-20 15:12:53 +02:00

158 lines
4.3 KiB
C++

/****************************************************************************
**
** 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]