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QGIViewAnnotation.cpp
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QGIViewAnnotation.cpp
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/***************************************************************************
* Copyright (c) 2013 Luke Parry <l.parry@warwick.ac.uk> *
* 2014 wandererfan <WandererFan@gmail.com> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
#include <cmath>
#include <QGraphicsScene>
#include <QMouseEvent>
#include <QGraphicsSceneHoverEvent>
#include <QGraphicsItem>
#include <QStyleOptionGraphicsItem>
#include <QGraphicsTextItem>
#include <QPainterPathStroker>
#include <QPainter>
#include <QString>
#include <QTextOption>
#include <sstream>
#endif
#include <qmath.h>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextBlockFormat>
#include <QTextFrame>
#include <QSizeF>
#include <App/Application.h>
#include <App/Material.h>
#include <Base/Console.h>
#include <Base/Parameter.h>
#include <Mod/TechDraw/App/DrawViewAnnotation.h>
#include "Rez.h"
#include "QGIViewAnnotation.h"
#include "QGCustomText.h"
using namespace TechDrawGui;
QGIViewAnnotation::QGIViewAnnotation()
{
setCacheMode(QGraphicsItem::NoCache);
setFlag(QGraphicsItem::ItemIsSelectable, true);
setFlag(QGraphicsItem::ItemIsMovable, true);
setAcceptHoverEvents(true);
m_textItem = new QGCustomText();
m_textItem->setTextInteractionFlags(Qt::NoTextInteraction);
//To allow on screen editing of text:
//m_textItem->setTextInteractionFlags(Qt::TextEditorInteraction); //this works
//QObject::connect(QGraphicsTextItem::document(), SIGNAL(contentsChanged()),m_textItem, SLOT(updateText())); //not tested
addToGroup(m_textItem);
m_textItem->setPos(0.,0.);
}
QVariant QGIViewAnnotation::itemChange(GraphicsItemChange change, const QVariant &value)
{
return QGIView::itemChange(change, value);
}
void QGIViewAnnotation::setViewAnnoFeature(TechDraw::DrawViewAnnotation *obj)
{
// called from QGVPage. (once)
setViewFeature(static_cast<TechDraw::DrawView *>(obj));
}
void QGIViewAnnotation::updateView(bool update)
{
auto viewAnno( dynamic_cast<TechDraw::DrawViewAnnotation *>(getViewObject()) );
if( viewAnno == nullptr)
return;
if (update ||
viewAnno->isTouched() ||
viewAnno->Text.isTouched() ||
viewAnno->Font.isTouched() ||
viewAnno->TextColor.isTouched() ||
viewAnno->TextSize.isTouched() ) {
draw();
}
QGIView::updateView(update);
}
void QGIViewAnnotation::draw()
{
if (!isVisible()) {
return;
}
drawAnnotation();
QGIView::draw();
rotateView();
}
//TODO: text is positioned slightly high (and left??) on page save to SVG file
void QGIViewAnnotation::drawAnnotation()
{
auto viewAnno( dynamic_cast<TechDraw::DrawViewAnnotation *>(getViewObject()) );
if( viewAnno == nullptr ) {
return;
}
const std::vector<std::string>& annoText = viewAnno->Text.getValues();
int fontSize = calculateFontPixelSize(viewAnno->TextSize.getValue());
//build HTML/CSS formatting around Text lines
std::stringstream ss;
ss << "<html>\n<head>\n<style>\n";
ss << "p {";
ss << "font-family:" << viewAnno->Font.getValue() << "; ";
ss << "font-size:" << fontSize << "px; ";
if (viewAnno->TextStyle.isValue("Normal")) {
ss << "font-weight:normal; font-style:normal; ";
} else if (viewAnno->TextStyle.isValue("Bold")) {
ss << "font-weight:bold; font-style:normal; ";
} else if (viewAnno->TextStyle.isValue("Italic")) {
ss << "font-weight:normal; font-style:italic; ";
} else if (viewAnno->TextStyle.isValue("Bold-Italic")) {
ss << "font-weight:bold; font-style:italic; ";
} else {
Base::Console().Warning("%s has invalid TextStyle\n",viewAnno->getNameInDocument());
ss << "font-weight:normal; font-style:normal; ";
}
ss << "line-height:" << viewAnno->LineSpace.getValue() << "%; ";
App::Color c = viewAnno->TextColor.getValue();
ss << "color:" << c.asCSSString() << "; ";
ss << "}\n</style>\n</head>\n<body>\n<p>";
for(std::vector<std::string>::const_iterator it = annoText.begin(); it != annoText.end(); it++) {
if (it == annoText.begin()) {
ss << *it;
} else {
ss << "<br>" << *it ;
}
}
ss << "<br></p>\n</body>\n</html> ";
prepareGeometryChange();
m_textItem->setTextWidth(Rez::guiX(viewAnno->MaxWidth.getValue()));
QString qs = QString::fromUtf8(ss.str().c_str());
m_textItem->setHtml(qs);
m_textItem->centerAt(0.,0.);
}
void QGIViewAnnotation::rotateView(void)
{
QRectF r = m_textItem->boundingRect();
m_textItem->setTransformOriginPoint(r.center());
double rot = getViewObject()->Rotation.getValue();
m_textItem->setRotation(-rot);
}