/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "scribblewidget.h"+
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+
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ScribbleWidget::ScribbleWidget(QWidget *parent)+
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    : QWidget(parent)+
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{+
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    scribbling = false;+
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}+
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+
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void ScribbleWidget::resizeEvent(QResizeEvent *e)+
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{+
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    image = QImage(e->size(), QImage::Format_RGB32);+
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    image.fill(QColor(Qt::white).rgb());+
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}+
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+
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void ScribbleWidget::mousePressEvent(QMouseEvent *event)+
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{+
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    if (event->button() != Qt::LeftButton)+
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        return;+
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+
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    lastPoint = event->pos();+
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    scribbling = true;+
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}+
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+
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void ScribbleWidget::mouseMoveEvent(QMouseEvent *event)+
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{+
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    if ((event->buttons() & Qt::LeftButton) && scribbling)+
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        drawLineTo(event->pos());+
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}+
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+
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void ScribbleWidget::mouseReleaseEvent(QMouseEvent *event)+
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{+
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    if (event->button() == Qt::LeftButton && scribbling) {+
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        drawLineTo(event->pos());+
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        scribbling = false;+
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    }+
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}+
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+
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void ScribbleWidget::paintEvent(QPaintEvent *)+
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{+
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    QPainter painter(this);+
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    painter.drawImage(QPoint(0, 0), image);+
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}+
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+
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void ScribbleWidget::drawLineTo(const QPoint &endPoint)+
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{+
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    QPainter painter(&image);+
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    painter.setPen(QPen(Qt::blue, 1, Qt::SolidLine,+
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                        Qt::RoundCap, Qt::RoundJoin));+
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    painter.drawLine(lastPoint, endPoint);+
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    update();+
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    lastPoint = endPoint;+
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}+
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