/****************************************************************************+
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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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+
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#include "examplecontent.h"+
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#include "colors.h"+
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#include "menumanager.h"+
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#include "imageitem.h"+
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#include "headingitem.h"+
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+
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ExampleContent::ExampleContent(const QString &name, QGraphicsScene *scene, QGraphicsItem *parent)+
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    : DemoItem(scene, parent)+
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{+
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    this->name = name;+
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    this->heading = 0;+
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    this->description = 0;+
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    this->screenshot = 0;+
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}+
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+
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void ExampleContent::prepare()+
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{+
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    if (!this->prepared){+
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        this->prepared = true;+
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        this->createContent();+
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    }+
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}+
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+
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void ExampleContent::animationStopped(int id)+
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{+
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    if (id == DemoItemAnimation::ANIM_OUT){+
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        // Free up some memory:+
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        delete this->heading;+
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        delete this->description;+
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        delete this->screenshot;+
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        this->heading = 0;+
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        this->description = 0;+
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        this->screenshot = 0;+
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        this->prepared = false;+
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    }+
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}+
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+
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QString ExampleContent::loadDescription()+
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{+
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    QByteArray ba = MenuManager::instance()->getHtml(this->name);+
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+
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    QDomDocument exampleDoc;+
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    exampleDoc.setContent(ba, false);+
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+
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    QDomNodeList paragraphs = exampleDoc.elementsByTagName("p");+
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    if (paragraphs.length() < 1 && Colors::verbose)+
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        qDebug() << "- ExampleContent::loadDescription(): Could not load description:" << MenuManager::instance()->info[this->name]["docfile"];+
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    QString description = Colors::contentColor + QLatin1String("Could not load description. Ensure that the documentation for Qt is built.");+
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    for (int p = 0; p < int(paragraphs.length()); ++p) {+
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        description = this->extractTextFromParagraph(paragraphs.item(p));+
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        if (this->isSummary(description)) {+
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            break;+
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        }+
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    }+
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    return Colors::contentColor + description;+
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}+
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+
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bool ExampleContent::isSummary(const QString &text)+
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{+
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    return (!text.contains("[") &&+
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        text.indexOf(QRegExp(QString("(In )?((The|This) )?(%1 )?.*(tutorial|example|demo|application)").arg(this->name), Qt::CaseInsensitive)) != -1);+
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}+
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+
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QString ExampleContent::extractTextFromParagraph(const QDomNode &parentNode)+
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{+
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    QString description;+
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    QDomNode node = parentNode.firstChild();+
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+
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    while (!node.isNull()) {+
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        QString beginTag;+
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        QString endTag;+
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        if (node.isText())+
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            description += Colors::contentColor + node.nodeValue();+
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        else if (node.hasChildNodes()) {+
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            if (node.nodeName() == "b") {+
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                beginTag = "<b>";+
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                endTag = "</b>";+
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            } else if (node.nodeName() == "a") {+
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                beginTag = Colors::contentColor;+
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                endTag = "</font>";+
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            } else if (node.nodeName() == "i") {+
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                beginTag = "<i>";+
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                endTag = "</i>";+
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            } else if (node.nodeName() == "tt") {+
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                beginTag = "<tt>";+
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                endTag = "</tt>";+
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            }+
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            description += beginTag + this->extractTextFromParagraph(node) + endTag;+
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        }+
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        node = node.nextSibling();+
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    }+
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+
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    return description;+
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}+
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+
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void ExampleContent::createContent()+
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{+
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    // Create the items:+
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    this->heading = new HeadingItem(this->name, this->scene(), this);+
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    this->description = new DemoTextItem(this->loadDescription(), Colors::contentFont(),+
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        Colors::heading, 500, this->scene(), this);+
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    int imgHeight = 340 - int(this->description->boundingRect().height()) + 50;+
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    this->screenshot = new ImageItem(QImage::fromData(MenuManager::instance()->getImage(this->name)),+
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          550, imgHeight, this->scene(), this);+
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+
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    // Place the items on screen:+
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    this->heading->setPos(0, 3);+
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    this->description->setPos(0, this->heading->pos().y() + this->heading->boundingRect().height() + 10);+
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    this->screenshot->setPos(0, this->description->pos().y() + this->description->boundingRect().height() + 10);+
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}+
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+
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QRectF ExampleContent::boundingRect() const+
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{+
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    return QRectF(0, 0, 500, 100);+
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}+
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+
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+
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