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Diffstat (limited to 'demos/qtdemo/examplecontent.cpp')
| -rw-r--r-- | demos/qtdemo/examplecontent.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/demos/qtdemo/examplecontent.cpp b/demos/qtdemo/examplecontent.cpp new file mode 100644 index 0000000..a568b8c --- /dev/null +++ b/demos/qtdemo/examplecontent.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "examplecontent.h" +#include "colors.h" +#include "menumanager.h" +#include "imageitem.h" +#include "headingitem.h" + +ExampleContent::ExampleContent(const QString &name, QGraphicsScene *scene, QGraphicsItem *parent) + : DemoItem(scene, parent) +{ + this->name = name; + this->heading = 0; + this->description = 0; + this->screenshot = 0; +} + +void ExampleContent::prepare() +{ + if (!this->prepared){ + this->prepared = true; + this->createContent(); + } +} + +void ExampleContent::animationStopped(int id) +{ + if (id == DemoItemAnimation::ANIM_OUT){ + // Free up some memory: + delete this->heading; + delete this->description; + delete this->screenshot; + this->heading = 0; + this->description = 0; + this->screenshot = 0; + this->prepared = false; + } +} + +QString ExampleContent::loadDescription() +{ + QByteArray ba = MenuManager::instance()->getHtml(this->name); + + QDomDocument exampleDoc; + exampleDoc.setContent(ba, false); + + QDomNodeList paragraphs = exampleDoc.elementsByTagName("p"); + if (paragraphs.length() < 1 && Colors::verbose) + qDebug() << "- ExampleContent::loadDescription(): Could not load description:" << MenuManager::instance()->info[this->name]["docfile"]; + QString description = Colors::contentColor + QLatin1String("Could not load description. Ensure that the documentation for Qt is built."); + for (int p = 0; p < int(paragraphs.length()); ++p) { + description = this->extractTextFromParagraph(paragraphs.item(p)); + if (this->isSummary(description)) { + break; + } + } + return Colors::contentColor + description; +} + +bool ExampleContent::isSummary(const QString &text) +{ + return (!text.contains("[") && + text.indexOf(QRegExp(QString("(In )?((The|This) )?(%1 )?.*(tutorial|example|demo|application)").arg(this->name), Qt::CaseInsensitive)) != -1); +} + +QString ExampleContent::extractTextFromParagraph(const QDomNode &parentNode) +{ + QString description; + QDomNode node = parentNode.firstChild(); + + while (!node.isNull()) { + QString beginTag; + QString endTag; + if (node.isText()) + description += Colors::contentColor + node.nodeValue(); + else if (node.hasChildNodes()) { + if (node.nodeName() == "b") { + beginTag = "<b>"; + endTag = "</b>"; + } else if (node.nodeName() == "a") { + beginTag = Colors::contentColor; + endTag = "</font>"; + } else if (node.nodeName() == "i") { + beginTag = "<i>"; + endTag = "</i>"; + } else if (node.nodeName() == "tt") { + beginTag = "<tt>"; + endTag = "</tt>"; + } + description += beginTag + this->extractTextFromParagraph(node) + endTag; + } + node = node.nextSibling(); + } + + return description; +} + +void ExampleContent::createContent() +{ + // Create the items: + this->heading = new HeadingItem(this->name, this->scene(), this); + this->description = new DemoTextItem(this->loadDescription(), Colors::contentFont(), + Colors::heading, 500, this->scene(), this); + int imgHeight = 340 - int(this->description->boundingRect().height()) + 50; + this->screenshot = new ImageItem(QImage::fromData(MenuManager::instance()->getImage(this->name)), + 550, imgHeight, this->scene(), this); + + // Place the items on screen: + this->heading->setPos(0, 3); + this->description->setPos(0, this->heading->pos().y() + this->heading->boundingRect().height() + 10); + this->screenshot->setPos(0, this->description->pos().y() + this->description->boundingRect().height() + 10); +} + +QRectF ExampleContent::boundingRect() const +{ + return QRectF(0, 0, 500, 100); +} + + |