--- a/examples/multitouch/pinchzoom/mouse.cpp Fri Sep 17 08:34:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,199 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples 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 "mouse.h"
-
-#include <QGraphicsScene>
-#include <QPainter>
-#include <QStyleOption>
-
-#include <math.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;
-}
-
-//! [0]
-Mouse::Mouse()
- : angle(0), speed(0), mouseEyeDirection(0),
- color(qrand() % 256, qrand() % 256, qrand() % 256)
-{
- rotate(qrand() % (360 * 16));
- startTimer(1000 / 33);
-}
-//! [0]
-
-//! [1]
-QRectF Mouse::boundingRect() const
-{
- qreal adjust = 0.5;
- return QRectF(-18 - adjust, -22 - adjust,
- 36 + adjust, 60 + adjust);
-}
-//! [1]
-
-//! [2]
-QPainterPath Mouse::shape() const
-{
- QPainterPath path;
- path.addRect(-10, -20, 20, 40);
- return path;
-}
-//! [2]
-
-//! [3]
-void Mouse::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
-{
- // Body
- painter->setBrush(color);
- painter->drawEllipse(-10, -20, 20, 40);
-
- // Eyes
- painter->setBrush(Qt::white);
- painter->drawEllipse(-10, -17, 8, 8);
- painter->drawEllipse(2, -17, 8, 8);
-
- // Nose
- painter->setBrush(Qt::black);
- painter->drawEllipse(QRectF(-2, -22, 4, 4));
-
- // Pupils
- painter->drawEllipse(QRectF(-8.0 + mouseEyeDirection, -17, 4, 4));
- painter->drawEllipse(QRectF(4.0 + mouseEyeDirection, -17, 4, 4));
-
- // Ears
- painter->setBrush(scene()->collidingItems(this).isEmpty() ? Qt::darkYellow : Qt::red);
- painter->drawEllipse(-17, -12, 16, 16);
- painter->drawEllipse(1, -12, 16, 16);
-
- // Tail
- QPainterPath path(QPointF(0, 20));
- path.cubicTo(-5, 22, -5, 22, 0, 25);
- path.cubicTo(5, 27, 5, 32, 0, 30);
- path.cubicTo(-5, 32, -5, 42, 0, 35);
- painter->setBrush(Qt::NoBrush);
- painter->drawPath(path);
-}
-//! [3]
-
-//! [4]
-void Mouse::timerEvent(QTimerEvent *)
-{
-//! [4]
- // Don't move too far away
-//! [5]
- QLineF lineToCenter(QPointF(0, 0), mapFromScene(0, 0));
- if (lineToCenter.length() > 150) {
- qreal angleToCenter = ::acos(lineToCenter.dx() / lineToCenter.length());
- if (lineToCenter.dy() < 0)
- angleToCenter = TwoPi - angleToCenter;
- angleToCenter = normalizeAngle((Pi - angleToCenter) + Pi / 2);
-
- if (angleToCenter < Pi && angleToCenter > Pi / 4) {
- // Rotate left
- angle += (angle < -Pi / 2) ? 0.25 : -0.25;
- } else if (angleToCenter >= Pi && angleToCenter < (Pi + Pi / 2 + Pi / 4)) {
- // Rotate right
- angle += (angle < Pi / 2) ? 0.25 : -0.25;
- }
- } else if (::sin(angle) < 0) {
- angle += 0.25;
- } else if (::sin(angle) > 0) {
- angle -= 0.25;
-//! [5] //! [6]
- }
-//! [6]
-
- // Try not to crash with any other mice
-//! [7]
- QList<QGraphicsItem *> dangerMice = scene()->items(QPolygonF()
- << mapToScene(0, 0)
- << mapToScene(-30, -50)
- << mapToScene(30, -50));
- foreach (QGraphicsItem *item, dangerMice) {
- if (item == this)
- continue;
-
- QLineF lineToMouse(QPointF(0, 0), mapFromItem(item, 0, 0));
- qreal angleToMouse = ::acos(lineToMouse.dx() / lineToMouse.length());
- if (lineToMouse.dy() < 0)
- angleToMouse = TwoPi - angleToMouse;
- angleToMouse = normalizeAngle((Pi - angleToMouse) + Pi / 2);
-
- if (angleToMouse >= 0 && angleToMouse < Pi / 2) {
- // Rotate right
- angle += 0.5;
- } else if (angleToMouse <= TwoPi && angleToMouse > (TwoPi - Pi / 2)) {
- // Rotate left
- angle -= 0.5;
-//! [7] //! [8]
- }
-//! [8] //! [9]
- }
-//! [9]
-
- // Add some random movement
-//! [10]
- if (dangerMice.size() > 1 && (qrand() % 10) == 0) {
- if (qrand() % 1)
- angle += (qrand() % 100) / 500.0;
- else
- angle -= (qrand() % 100) / 500.0;
- }
-//! [10]
-
-//! [11]
- speed += (-50 + qrand() % 100) / 100.0;
-
- qreal dx = ::sin(angle) * 10;
- mouseEyeDirection = (qAbs(dx / 5) < 1) ? 0 : dx / 5;
-
- rotate(dx);
- setPos(mapToParent(0, -(3 + sin(speed) * 3)));
-}
-//! [11]