/******************************************************************************** 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 demonstration applications of the Qt Toolkit.**** $QT_BEGIN_LICENSE:LGPL$** No Commercial Usage** This file contains pre-release code and may not be distributed.** You may use this file in accordance with the terms and conditions** contained in the Technology Preview License Agreement accompanying** this package.**** GNU Lesser General Public License Usage** Alternatively, this file may be used under the terms of the GNU Lesser** General Public License version 2.1 as published by the Free Software** Foundation and appearing in the file LICENSE.LGPL included in the** packaging of this file. Please review the following information to** ensure the GNU Lesser General Public License version 2.1 requirements** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.**** In addition, as a special exception, Nokia gives you certain additional** rights. These rights are described in the Nokia Qt LGPL Exception** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.**** If you have questions regarding the use of this file, please contact** Nokia at qt-info@nokia.com.****************** $QT_END_LICENSE$******************************************************************************/#include <cmath>#include "letteritem.h"#include "colors.h"LetterItem::LetterItem(char letter, QGraphicsScene *scene, QGraphicsItem *parent) : DemoItem(scene, parent), letter(letter){ useSharedImage(QString(__FILE__) + letter);}LetterItem::~LetterItem(){}QImage *LetterItem::createImage(const QMatrix &matrix) const{ QRect scaledRect = matrix.mapRect(QRect(0, 0, 25, 25)); QImage *image = new QImage(scaledRect.width(), scaledRect.height(), QImage::Format_ARGB32_Premultiplied); image->fill(0); QPainter painter(image); painter.scale(matrix.m11(), matrix.m22()); painter.setRenderHints(QPainter::TextAntialiasing | QPainter::Antialiasing | QPainter::SmoothPixmapTransform); painter.setPen(Qt::NoPen); if (Colors::useEightBitPalette){ painter.setBrush(QColor(102, 175, 54)); painter.drawEllipse(0, 0, 25, 25); painter.setFont(Colors::tickerFont()); painter.setPen(QColor(255, 255, 255)); painter.drawText(10, 15, QString(this->letter)); } else { QLinearGradient brush(0, 0, 0, 25); brush.setSpread(QLinearGradient::PadSpread); brush.setColorAt(0.0, QColor(102, 175, 54, 200)); brush.setColorAt(1.0, QColor(102, 175, 54, 60)); painter.setBrush(brush); painter.drawEllipse(0, 0, 25, 25); painter.setFont(Colors::tickerFont()); painter.setPen(QColor(255, 255, 255, 255)); painter.drawText(10, 15, QString(this->letter)); } return image;}