Long live Qt 4.5!

1 files changed, 140 insertions, 0 deletions

diff --git a/demos/qtdemo/menucontent.cpp b/demos/qtdemo/menucontent.cpp
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+/****************************************************************************
+**
+** 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);
+}
+
+