demos/qtdemo/letteritem.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 00:43:10 +0200
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permissions -rw-r--r--
Revision: 201003 Kit: 201005
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/****************************************************************************
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**
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** Copyright (C) 2009 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 demonstration applications 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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#include <cmath>
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#include "letteritem.h"
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#include "colors.h"
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LetterItem::LetterItem(char letter, QGraphicsScene *scene, QGraphicsItem *parent) : DemoItem(scene, parent), letter(letter)
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{
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    useSharedImage(QString(__FILE__) + letter);
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}
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LetterItem::~LetterItem()
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{
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}
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QImage *LetterItem::createImage(const QMatrix &matrix) const
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{
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    QRect scaledRect = matrix.mapRect(QRect(0, 0, 25, 25));
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    QImage *image = new QImage(scaledRect.width(), scaledRect.height(), QImage::Format_ARGB32_Premultiplied);
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    image->fill(0);
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    QPainter painter(image);
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    painter.scale(matrix.m11(), matrix.m22());
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    painter.setRenderHints(QPainter::TextAntialiasing | QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
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    painter.setPen(Qt::NoPen);
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    if (Colors::useEightBitPalette){
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        painter.setBrush(QColor(102, 175, 54));
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        painter.drawEllipse(0, 0, 25, 25);
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        painter.setFont(Colors::tickerFont());
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        painter.setPen(QColor(255, 255, 255));
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        painter.drawText(10, 15, QString(this->letter));
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    }
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    else {
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        QLinearGradient brush(0, 0, 0, 25);
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        brush.setSpread(QLinearGradient::PadSpread);
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        brush.setColorAt(0.0, QColor(102, 175, 54, 200));
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        brush.setColorAt(1.0, QColor(102, 175, 54, 60));
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        painter.setBrush(brush);
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        painter.drawEllipse(0, 0, 25, 25);
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        painter.setFont(Colors::tickerFont());
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        painter.setPen(QColor(255, 255, 255, 255));
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        painter.drawText(10, 15, QString(this->letter));
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    }
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    return image;
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}
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