1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "menucontent.h"

    43 #include "colors.h"

    44 #include "menumanager.h"

    45 #include "demotextitem.h"

    46 #include "headingitem.h"

    47 

    48 MenuContentItem::MenuContentItem(const QDomElement &el, QGraphicsScene *scene, QGraphicsItem *parent)

    49     : DemoItem(scene, parent)

    50 {

    51     this->name = el.attribute("name");

    52     this->heading = 0;

    53     this->description1 = 0;

    54     this->description2 = 0;

    55 

    56     if (el.tagName() == "demos")

    57         this->readmePath = QLibraryInfo::location(QLibraryInfo::DemosPath) + "/README";

    58     else

    59         this->readmePath = QLibraryInfo::location(QLibraryInfo::ExamplesPath) + "/" + el.attribute("dirname") + "/README";

    60 

    61 }

    62 

    63 void MenuContentItem::prepare()

    64 {

    65     if (!this->prepared){

    66         this->prepared= true;

    67         this->createContent();

    68     }

    69 }

    70 

    71 void MenuContentItem::animationStopped(int id)

    72 {

    73     if (this->name == Colors::rootMenuName)

    74         return; // Optimization hack.

    75 

    76     if (id == DemoItemAnimation::ANIM_OUT){

    77         // Free up some memory:

    78         delete this->heading;

    79         delete this->description1;

    80         delete this->description2;

    81         this->heading = 0;

    82         this->description1 = 0;

    83         this->description2 = 0;

    84         this->prepared = false;

    85     }

    86 }

    87 

    88 QString MenuContentItem::loadDescription(int startPara, int nrPara)

    89 {

    90     QString result;

    91     QFile readme(this->readmePath);

    92     if (!readme.open(QFile::ReadOnly)){

    93         if (Colors::verbose)

    94             qDebug() << "- MenuContentItem::loadDescription: Could not load:" << this->readmePath;

    95         return "";

    96     }

    97 

    98     QTextStream in(&readme);

    99     // Skip a certain number of paragraphs:

   100     while (startPara)

   101         if (in.readLine().isEmpty()) --startPara;

   102 

   103     // Read in the number of wanted paragraphs:

   104     QString line = in.readLine();

   105     do {

   106         result += line + " ";

   107         line = in.readLine();

   108         if (line.isEmpty()){

   109             --nrPara;

   110             line = "<br><br>" + in.readLine();

   111         }

   112     } while (nrPara && !in.atEnd());

   113 

   114     return Colors::contentColor + result;

   115 }

   116 

   117 void MenuContentItem::createContent()

   118 {

   119     // Create the items:

   120     this->heading = new HeadingItem(this->name, this->scene(), this);

   121     QString para1 = this->loadDescription(0, 1);

   122     if (para1.isEmpty())

   123         para1 = Colors::contentColor + QLatin1String("Could not load description. Ensure that the documentation for Qt is built.");

   124     QColor bgcolor = Colors::sceneBg1.darker(200);

   125     bgcolor.setAlpha(100);

   126     this->description1 = new DemoTextItem(para1, Colors::contentFont(), Colors::heading, 500, this->scene(), this, DemoTextItem::STATIC_TEXT);

   127     this->description2 = new DemoTextItem(this->loadDescription(1, 2), Colors::contentFont(), Colors::heading, 250, this->scene(), this, DemoTextItem::STATIC_TEXT);

   128 

   129     // Place the items on screen:

   130     this->heading->setPos(0, 3);

   131     this->description1->setPos(0, this->heading->pos().y() + this->heading->boundingRect().height() + 10);

   132     this->description2->setPos(0, this->description1->pos().y() + this->description1->boundingRect().height() + 15);

   133 }

   134 

   135 QRectF MenuContentItem::boundingRect() const

   136 {

   137     return QRectF(0, 0, 500, 350);

   138 }

   139 

   140