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/* This file is part of thShapee KDE project
Copyright (C) 2006 Martin Pfeiffer <hubipete@gmx.net>
Copyright (C) 2006-2007 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
2009 Jeremias Epperlein <jeeree@web.de>
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "UnderOverElement.h"
#include "FormulaCursor.h"
#include "AttributeManager.h"
#include "FormulaDebug.h"
#include <KoXmlReader.h>
#include <QPainter>
UnderOverElement::UnderOverElement( BasicElement* parent, ElementType elementType )
: FixedElement( parent )
{
if (elementType!=Under) {
m_overElement = new RowElement( this );
} else {
m_overElement = 0;
}
if (elementType!=Over) {
m_underElement = new RowElement( this );
} else {
m_underElement = 0;
}
m_baseElement=new RowElement( this );
m_elementType = elementType;
}
UnderOverElement::~UnderOverElement()
{
delete m_baseElement;
if (m_underElement) {
delete m_underElement;
}
if (m_overElement) {
delete m_overElement;
}
}
const QList<BasicElement*> UnderOverElement::childElements() const
{
QList<BasicElement*> tmp;
tmp << m_baseElement;
if(m_overElement) {
tmp << m_overElement;
}
if(m_underElement) {
tmp << m_underElement;
}
return tmp;
}
void UnderOverElement::paint( QPainter& painter, AttributeManager* am)
{
/*do nothing as UnderOverElement has no visual representation*/
Q_UNUSED(painter)
Q_UNUSED(am)
}
void UnderOverElement::layout( const AttributeManager* am )
{
// qreal thinSpace = am->layoutSpacing( this );
// qreal accent = m_elementType != Under && am->boolOf( "accent", this ); //Whether to add a space above
// qreal accentUnder = m_elementType != Over && am->boolOf( "accentunder", this );//Whether to add a space below
// Set whether to stretch the element. Set it to true if it doesn't exist to make it easy to check if any are non-stretchy
bool underStretchy = m_elementType == Over || am->boolOf( "stretchy", m_underElement );
bool overStretchy = m_elementType == Under || am->boolOf( "stretchy", m_overElement );
bool baseStretchy = (underStretchy && overStretchy) || am->boolOf( "stretchy", m_baseElement ); //For sanity, make sure at least one is not stretchy
qreal largestWidth = 0;
if(!baseStretchy)
largestWidth = m_baseElement->width();
if(m_elementType != Over && !underStretchy)
largestWidth = qMax( m_underElement->width(), largestWidth );
if(m_elementType != Under && !overStretchy)
largestWidth = qMax( m_overElement->width(), largestWidth );
QPointF origin(0.0,0.0);
if(m_elementType != Under) {
origin.setX(( largestWidth - m_overElement->width() ) / 2.0 ) ;
m_overElement->setOrigin( origin );
origin.setY( m_overElement->height() );
}
origin.setX( ( largestWidth - m_baseElement->width() ) / 2.0 );
m_baseElement->setOrigin( origin );
setBaseLine( origin.y() + m_baseElement->baseLine() );
if(m_elementType != Over) {
origin.setX( ( largestWidth - m_underElement->width())/2.0 );
/* Try to be smart about where to place the under */
// if(m_baseElement->baseLine() + 1.5*thinSpace > m_baseElement->height())
// origin.setY( origin.y() + m_baseElement->baseLine() );
// else
origin.setY( origin.y() + m_baseElement->height());
m_underElement->setOrigin( origin );
setHeight( origin.y() + m_underElement->height() );
} else {
setHeight( origin.y() + m_baseElement->height() );
}
setWidth( largestWidth );
}
QString UnderOverElement::attributesDefaultValue( const QString& attribute ) const
{
Q_UNUSED( attribute )
/* if( m_overElement->elementType() == Operator )
else if( m_underElement->elementType() == Operator )*/
return "false"; // the default for accent and
}
bool UnderOverElement::readMathMLContent( const KoXmlElement& parent )
{
KoXmlElement tmp;
int counter=0;
forEachElement( tmp, parent ) {
if (counter==0) {
loadElement(tmp,&m_baseElement);
} else if (counter==1 && m_elementType != Over) {
loadElement(tmp,&m_underElement);
} else if ((counter==2 && m_elementType==UnderOver) || (counter==1 && m_elementType==Over)) {
loadElement(tmp,&m_overElement);
} else if ((counter==3 && m_elementType==UnderOver) || (counter==2)) {
debugFormula << "Too many arguments to "
<< ElementFactory::elementName(m_elementType)
<< "counter =" << counter;
return false;
}
counter++;
}
if ((counter<3 && m_elementType==UnderOver) || (counter<2)) {
debugFormula << "Not enough arguments to "
<< ElementFactory::elementName(m_elementType)
<< "counter =" << counter
<< "type = " << (m_elementType == Under ? "Under"
: m_elementType == Over ? "Over" : "UnderOver");
return false;
}
return true;
}
void UnderOverElement::writeMathMLContent( KoXmlWriter* writer, const QString& ns ) const
{
m_baseElement->writeMathML( writer, ns ); // Just save the children in
if(m_elementType != Over) {
m_underElement->writeMathML( writer, ns ); // the right order
}
if(m_elementType != Under) {
m_overElement->writeMathML( writer, ns );
}
}
ElementType UnderOverElement::elementType() const
{
return m_elementType;
}
bool UnderOverElement::moveCursor ( FormulaCursor& newcursor, FormulaCursor& oldcursor )
{
int childpos=newcursor.position()/2;
if (m_elementType==Over) {
return moveVertSituation(newcursor,oldcursor,1,0);
} else if (m_elementType==Under) {
return moveVertSituation(newcursor,oldcursor,0,1);
} else {
switch (childpos) {
case 1:
return moveVertSituation(newcursor,oldcursor,1,0);
case 0:
if (newcursor.direction()==MoveDown) {
return moveVertSituation(newcursor,oldcursor,0,2);
} else if (newcursor.direction()==MoveUp) {
return moveVertSituation(newcursor,oldcursor,1,0);
} else {
return moveVertSituation(newcursor,oldcursor,0,1);
}
break;
case 2:
return moveVertSituation(newcursor,oldcursor,0,2);
default:
return false;
}
}
return false;
}
int UnderOverElement::endPosition() const
{
return m_elementType==UnderOver ? 5 : 3;
}
bool UnderOverElement::setCursorTo ( FormulaCursor& cursor, QPointF point )
{
if (cursor.isSelecting()) {
return false;
}
if (m_underElement && m_underElement->boundingRect().contains(point)) {
return m_underElement->setCursorTo(cursor, point-m_underElement->origin());
} else if (m_overElement && m_overElement->boundingRect().contains(point)) {
return m_overElement->setCursorTo(cursor, point-m_overElement->origin());
} else {
return m_baseElement->setCursorTo(cursor, point-m_baseElement->origin());
}
}
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