/****************************************************************************

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

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** contained in the Technology Preview License Agreement accompanying

** this package.

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

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

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****************************************************************************/

#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);

}