/****************************************************************************
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file may be used under the terms of the GNU Lesser General Public
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** General Public License version 2.1 requirements will be met:
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** 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
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** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
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****************************************************************************/

#include "qgeotiledmaptextobjectinfo_p.h"

#include "qgeotiledmapdata.h"
#include "qgeotiledmapdata_p.h"

#include "qgeomaptextobject.h"

#include <QFontMetrics>

QTM_BEGIN_NAMESPACE

QGeoTiledMapTextObjectInfo::QGeoTiledMapTextObjectInfo(QGeoTiledMapData *mapData, QGeoMapObject *mapObject)
    : QGeoTiledMapObjectInfo(mapData, mapObject)
{
    text = static_cast<QGeoMapTextObject*>(mapObject);

    connect(text,
            SIGNAL(textChanged(QString)),
            this,
            SLOT(textChanged(QString)));
    connect(text,
            SIGNAL(fontChanged(QFont)),
            this,
            SLOT(fontChanged(QFont)));
    connect(text,
            SIGNAL(penChanged(QPen)),
            this,
            SLOT(penChanged(QPen)));
    connect(text,
            SIGNAL(brushChanged(QBrush)),
            this,
            SLOT(brushChanged(QBrush)));
    connect(text,
            SIGNAL(offsetChanged(QPoint)),
            this,
            SLOT(offsetChanged(QPoint)));
    connect(text,
            SIGNAL(alignmentChanged(Qt::Alignment)),
            this,
            SLOT(alignmentChanged(Qt::Alignment)));

    textItem = new QGraphicsSimpleTextItem();
    graphicsItem = textItem;

    penChanged(text->pen());
    brushChanged(text->brush());
    originChanged(text->origin());
    fontChanged(text->font());
    textChanged(text->text());
}

QGeoTiledMapTextObjectInfo::~QGeoTiledMapTextObjectInfo() {}

void QGeoTiledMapTextObjectInfo::textChanged(const QString &/*text*/)
{
    textItem->setText(text->text());
    doAlignment();
    updateItem();
}

void QGeoTiledMapTextObjectInfo::fontChanged(const QFont &/*font*/)
{
    textItem->setFont(text->font());
    doAlignment();
    updateItem();
}

void QGeoTiledMapTextObjectInfo::offsetChanged(const QPoint &/*offset*/)
{
    doAlignment();
    updateItem();
}

void QGeoTiledMapTextObjectInfo::alignmentChanged(Qt::Alignment /*alignment*/)
{
    doAlignment();
    updateItem();
}

void QGeoTiledMapTextObjectInfo::penChanged(const QPen &/*pen*/)
{
    textItem->setPen(text->pen());
    doAlignment();
    updateItem();
}

void QGeoTiledMapTextObjectInfo::brushChanged(const QBrush &/*brush*/)
{
    if (textItem) {
        textItem->setBrush(text->brush());
        doAlignment();
        updateItem();
    }
}

void QGeoTiledMapTextObjectInfo::doAlignment()
{
    Qt::Alignment align = text->alignment();
    QTransform trans;
    textItem->setTransform(trans);

    QRectF rect = textItem->boundingRect();
    QPointF center = rect.center();

    if (align & Qt::AlignVCenter) {
        trans.translate(0, -1 * center.y());
    } else if (align & Qt::AlignTop) {
        trans.translate(0, -1 * rect.top());
    } else if (align & Qt::AlignBottom) {
        trans.translate(0, -1 * rect.bottom());
    }
    if (align & Qt::AlignHCenter) {
        trans.translate(-1 * center.x(), 0);
    } else if (align & Qt::AlignLeft) {
        trans.translate(-1 * rect.left(), 0);
    } else if (align & Qt::AlignRight) {
        trans.translate(-1 * rect.right(), 0);
    }

    QPoint offset = text->offset();
    trans.translate(offset.x(), offset.y());
    textItem->setTransform(trans);
}

#include "moc_qgeotiledmaptextobjectinfo_p.cpp"

QTM_END_NAMESPACE