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#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]
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