/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/

#include "percentbarchartitem_p.h"
#include "bar_p.h"
#include "barvalue_p.h"
#include "qbarset.h"
#include <QDebug>

QTCOMMERCIALCHART_BEGIN_NAMESPACE

PercentBarChartItem::PercentBarChartItem(QBarSeries *series, ChartPresenter *presenter) :
    BarChartItem(series, presenter)
{
}

QVector<QRectF> PercentBarChartItem::calculateLayout()
{
    QVector<QRectF> layout;

    // Use temporary qreals for accurancy (we might get some compiler warnings... :)
    qreal width = geometry().width();
    qreal height = geometry().height();

    qreal categoryCount = m_series->categoryCount();
    qreal barWidth = width / (m_series->categoryCount() * 2);
    qreal xStep = width / categoryCount;
    qreal xPos =  xStep / 2 - barWidth / 2;

    int itemIndex(0);
    for (int category = 0; category < categoryCount; category++) {
        qreal colSum = m_series->categorySum(category);
        qreal scale = (height / colSum);
        qreal yPos = height;
        for (int set=0; set < m_series->barsetCount(); set++) {
            qreal barHeight = m_series->valueAt(set, category) * scale;
            Bar* bar = m_bars.at(itemIndex);
            bar->setPen(m_series->barsetAt(set)->pen());
            bar->setBrush(m_series->barsetAt(set)->brush());
            QRectF rect(xPos, yPos-barHeight, barWidth, barHeight);
            layout.append(rect);
            itemIndex++;
            yPos -= barHeight;
        }
        xPos += xStep;
    }

    // Position floating values
    itemIndex = 0;
    xPos = (width/categoryCount);
    for (int category=0; category < m_series->categoryCount(); category++) {
        qreal yPos = height;
        qreal colSum = m_series->categorySum(category);
        qreal scale = (height / colSum);
        for (int set=0; set < m_series->barsetCount(); set++) {
            qreal barHeight = m_series->valueAt(set,category) * scale;
            BarValue* value = m_floatingValues.at(itemIndex);

            QBarSet* barSet = m_series->barsetAt(set);
            value->resize(100, 50);  // TODO: proper layout for this.
            value->setPos(xPos, yPos-barHeight / 2);
            value->setPen(barSet->floatingValuePen());

            if (!qFuzzyIsNull(m_series->valueAt(set,category))) {
                int p = m_series->percentageAt(set,category) * 100;
                QString vString(QString::number(p));
                vString.truncate(3);
                vString.append("%");
                value->setText(vString);
            } else {
                value->setText(QString(""));
            }

            itemIndex++;
            yPos -= barHeight;
        }
        xPos += xStep;
    }
    return layout;
}

#include "moc_percentbarchartitem_p.cpp"

QTCOMMERCIALCHART_END_NAMESPACE