Kontron KTAM3874-pITX Manual de usuario descargar pdf (Pagina 184)

KTD-S0057-I Page 180 Linux® Programming Examples (DebianTM)

KTAM3874/pITX Software Guide

QRectF boundingRect () const;

QPainterPath shape () const;

void paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

protected:

void advance (int step);

private:

qreal angle;

qreal speed;

qreal mouseEyeDirection;

QColor color;

};

#endif

File mouse.cpp

(header with Qt

license see 'main.cpp'):

#include <QtGui/QGraphicsScene>

#include <QtGui/QPainter>

#include <QtGui/QStyleOption>

#include <math.h>

#include "mouse.h"

static const double Pi = 3.14159265358979323846264338327950288419717;

static double TwoPi = 2.0 * Pi;

static qreal normalizeAngle (qreal angle)

{

while (angle < 0)

angle += TwoPi;

while (angle > TwoPi)

angle -= TwoPi;

return angle;

}

Mouse::Mouse ()

: angle (0), speed (0), mouseEyeDirection (0), color (qrand () % 256, qrand () % 256, qrand () % 256)

{

setRotation (qrand () % (360 * 16));

}

QRectF Mouse::boundingRect () const

{

qreal adjust = 0.5;

return QRectF (-18 - adjust, -22 - adjust, 36 + adjust, 60 + adjust);

}

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Kontron KTAM3874-pITX Manual de usuario Pagina 184