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Diffstat (limited to 'demos/qtdemo/menucontent.cpp')
-rw-r--r-- | demos/qtdemo/menucontent.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/demos/qtdemo/menucontent.cpp b/demos/qtdemo/menucontent.cpp new file mode 100644 index 0000000..a74cfe4 --- /dev/null +++ b/demos/qtdemo/menucontent.cpp @@ -0,0 +1,140 @@ +/**************************************************************************** +** +** 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 "menucontent.h" +#include "colors.h" +#include "menumanager.h" +#include "demotextitem.h" +#include "headingitem.h" + +MenuContentItem::MenuContentItem(const QDomElement &el, QGraphicsScene *scene, QGraphicsItem *parent) + : DemoItem(scene, parent) +{ + this->name = el.attribute("name"); + this->heading = 0; + this->description1 = 0; + this->description2 = 0; + + if (el.tagName() == "demos") + this->readmePath = QLibraryInfo::location(QLibraryInfo::DemosPath) + "/README"; + else + this->readmePath = QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/" + el.attribute("dirname") + "/README"; + +} + +void MenuContentItem::prepare() +{ + if (!this->prepared){ + this->prepared= true; + this->createContent(); + } +} + +void MenuContentItem::animationStopped(int id) +{ + if (this->name == Colors::rootMenuName) + return; // Optimization hack. + + if (id == DemoItemAnimation::ANIM_OUT){ + // Free up some memory: + delete this->heading; + delete this->description1; + delete this->description2; + this->heading = 0; + this->description1 = 0; + this->description2 = 0; + this->prepared = false; + } +} + +QString MenuContentItem::loadDescription(int startPara, int nrPara) +{ + QString result; + QFile readme(this->readmePath); + if (!readme.open(QFile::ReadOnly)){ + if (Colors::verbose) + qDebug() << "- MenuContentItem::loadDescription: Could not load:" << this->readmePath; + return ""; + } + + QTextStream in(&readme); + // Skip a certain number of paragraphs: + while (startPara) + if (in.readLine().isEmpty()) --startPara; + + // Read in the number of wanted paragraphs: + QString line = in.readLine(); + do { + result += line + " "; + line = in.readLine(); + if (line.isEmpty()){ + --nrPara; + line = "<br><br>" + in.readLine(); + } + } while (nrPara && !in.atEnd()); + + return Colors::contentColor + result; +} + +void MenuContentItem::createContent() +{ + // Create the items: + this->heading = new HeadingItem(this->name, this->scene(), this); + QString para1 = this->loadDescription(0, 1); + if (para1.isEmpty()) + para1 = Colors::contentColor + QLatin1String("Could not load description. Ensure that the documentation for Qt is built."); + QColor bgcolor = Colors::sceneBg1.darker(200); + bgcolor.setAlpha(100); + this->description1 = new DemoTextItem(para1, Colors::contentFont(), Colors::heading, 500, this->scene(), this, DemoTextItem::STATIC_TEXT); + this->description2 = new DemoTextItem(this->loadDescription(1, 2), Colors::contentFont(), Colors::heading, 250, this->scene(), this, DemoTextItem::STATIC_TEXT); + + // Place the items on screen: + this->heading->setPos(0, 3); + this->description1->setPos(0, this->heading->pos().y() + this->heading->boundingRect().height() + 10); + this->description2->setPos(0, this->description1->pos().y() + this->description1->boundingRect().height() + 15); +} + +QRectF MenuContentItem::boundingRect() const +{ + return QRectF(0, 0, 500, 350); +} + + |