/***************************************************************************
** **
** QCustomPlot, an easy to use, modern plotting widget for Qt **
** Copyright (C) 2011-2018 Emanuel Eichhammer **
** **
** This program is free software: you can redistribute it and/or modify **
** it under the terms of the GNU General Public License as published by **
** the Free Software Foundation, either version 3 of the License, or **
** (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, **
** but WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program. If not, see http://www.gnu.org/licenses/. **
** **
****************************************************************************
** Author: Emanuel Eichhammer **
** Website/Contact: http://www.qcustomplot.com/ **
** Date: 25.06.18 **
** Version: 2.0.1 **
****************************************************************************/

#include "qcpdocumentobject.h"

QCPDocumentObject::QCPDocumentObject(QObject *parent) :
 QObject(parent)
{
}

QSizeF QCPDocumentObject::intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format)
{
 Q_UNUSED(doc)
 Q_UNUSED(posInDocument)
 QPicture pic = qvariant_cast<QPicture>(format.property(PicturePropertyId));
 if (pic.isNull())
 {
 qDebug() << Q_FUNC_INFO << "Plot object is empty";
 return QSizeF(10, 10);
 } else
 return QSizeF(pic.boundingRect().size());
}

void QCPDocumentObject::drawObject(QPainter *painter, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format)
{
 Q_UNUSED(doc)
 Q_UNUSED(posInDocument)
 QPicture pic = qvariant_cast<QPicture>(format.property(PicturePropertyId));
 if (pic.isNull())
 return;
 
 QSize finalSize = pic.boundingRect().size();
 finalSize.scale(rect.size().toSize(), Qt::KeepAspectRatio);
 double scaleFactor = finalSize.width()/(double)pic.boundingRect().size().width();
 painter->save();
 painter->scale(scaleFactor, scaleFactor);
 painter->setClipRect(rect);
 painter->drawPicture(rect.topLeft(), pic);
 painter->restore();
}

QTextCharFormat QCPDocumentObject::generatePlotFormat(QCustomPlot *plot, int width, int height)
{
 QPicture picture;
 QCPPainter qcpPainter;
 qcpPainter.begin(&picture);
 plot->toPainter(&qcpPainter, width, height);
 qcpPainter.end();
 
 QTextCharFormat result;
 result.setObjectType(QCPDocumentObject::PlotTextFormat);
 result.setProperty(QCPDocumentObject::PicturePropertyId, QVariant::fromValue(picture));
 return result;
}