qgsattributeeditorelement.cpp

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/***************************************************************************
  qgsattributeeditorelement.cpp - QgsAttributeEditorElement
 
 ---------------------
 begin                : 18.8.2016
 copyright            : (C) 2016 by Matthias Kuhn
 email                : [email protected]
 ***************************************************************************
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#include "qgsattributeeditorelement.h"
 
#include "qgsattributeeditorcontainer.h"
#include "qgsattributeeditorfield.h"
#include "qgsattributeeditoraction.h"
#include "qgsattributeeditorhtmlelement.h"
#include "qgsattributeeditorqmlelement.h"
#include "qgsattributeeditorrelation.h"
#include "qgsattributeeditorspacerelement.h"
#include "qgsattributeeditortextelement.h"
#include "qgssymbollayerutils.h"
#include "qgsfontutils.h"
 
QDomElement QgsAttributeEditorElement::toDomElement( QDomDocument &doc ) const
{
  QDomElement elem = doc.createElement( typeIdentifier() );
  elem.setAttribute( QStringLiteral( "name" ), mName );
  elem.setAttribute( QStringLiteral( "showLabel" ), mShowLabel );
  elem.setAttribute( QStringLiteral( "horizontalStretch" ), mHorizontalStretch );
  elem.setAttribute( QStringLiteral( "verticalStretch" ), mVerticalStretch );
  elem.appendChild( mLabelStyle.writeXml( doc ) );
  saveConfiguration( elem, doc );
  return elem;
}
 
bool QgsAttributeEditorElement::showLabel() const
{
  return mShowLabel;
}
 
void QgsAttributeEditorElement::setShowLabel( bool showLabel )
{
  mShowLabel = showLabel;
}
 
QgsAttributeEditorElement::LabelStyle QgsAttributeEditorElement::labelStyle() const
{
  return mLabelStyle;
}
 
void QgsAttributeEditorElement::setLabelStyle( const QgsAttributeEditorElement::LabelStyle &labelStyle )
{
  mLabelStyle = labelStyle;
}
 
QgsAttributeEditorElement *QgsAttributeEditorElement::create( const QDomElement &element, const QString &layerId, const QgsFields &fields, const QgsReadWriteContext &context, QgsAttributeEditorElement *parent )
{
  QgsAttributeEditorElement *newElement = nullptr;
 
  const QString name = element.attribute( QStringLiteral( "name" ) );
 
  if ( element.tagName() == QLatin1String( "attributeEditorContainer" ) )
  {
    newElement = new QgsAttributeEditorContainer( context.projectTranslator()->translate( QStringLiteral( "project:layers:%1:formcontainers" ).arg( layerId ),
        name ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorField" ) )
  {
    const int idx = fields.lookupField( name );
    newElement = new QgsAttributeEditorField( name, idx, parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorRelation" ) )
  {
    // At this time, the relations are not loaded
    // So we only grab the id and delegate the rest to onRelationsLoaded()
    newElement = new QgsAttributeEditorRelation( element.attribute( QStringLiteral( "relation" ), QStringLiteral( "[None]" ) ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorQmlElement" ) )
  {
    newElement = new QgsAttributeEditorQmlElement( element.attribute( QStringLiteral( "name" ) ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorHtmlElement" ) )
  {
    newElement = new QgsAttributeEditorHtmlElement( element.attribute( QStringLiteral( "name" ) ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorTextElement" ) )
  {
    newElement = new QgsAttributeEditorTextElement( element.attribute( QStringLiteral( "name" ) ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorSpacerElement" ) )
  {
    newElement = new QgsAttributeEditorSpacerElement( element.attribute( QStringLiteral( "name" ) ), parent );
  }
  else if ( element.tagName() == QLatin1String( "attributeEditorAction" ) )
  {
    newElement = new QgsAttributeEditorAction( QUuid( element.attribute( QStringLiteral( "name" ) ) ), parent );
  }
 
  if ( newElement )
  {
    if ( element.hasAttribute( QStringLiteral( "showLabel" ) ) )
      newElement->setShowLabel( element.attribute( QStringLiteral( "showLabel" ) ).toInt() );
    else
      newElement->setShowLabel( true );
 
    newElement->setHorizontalStretch( element.attribute( QStringLiteral( "horizontalStretch" ), QStringLiteral( "0" ) ).toInt() );
    newElement->setVerticalStretch( element.attribute( QStringLiteral( "verticalStretch" ), QStringLiteral( "0" ) ).toInt() );
 
    // Label font and color
    LabelStyle style;
    style.readXml( element );
    newElement->setLabelStyle( style );
 
    newElement->loadConfiguration( element, layerId, context, fields );
  }
 
  return newElement;
}
 
 
void QgsAttributeEditorElement::LabelStyle::readXml( const QDomNode &node )
{
  QDomElement element { node.firstChildElement( QStringLiteral( "labelStyle" ) ) };
 
  if ( ! element.isNull() )
  {
 
    // Label font and color
    if ( element.hasAttribute( QStringLiteral( "labelColor" ) ) )
    {
      color = QgsSymbolLayerUtils::decodeColor( element.attribute( QStringLiteral( "labelColor" ) ) );
    }
 
    QFont newFont;
    QgsFontUtils::setFromXmlChildNode( newFont, element, QStringLiteral( "labelFont" ) );
 
    font = newFont;
 
    if ( element.hasAttribute( QStringLiteral( "overrideLabelColor" ) ) )
    {
      overrideColor = element.attribute( QStringLiteral( "overrideLabelColor" ) ) == QChar( '1' );
    }
 
    if ( element.hasAttribute( QStringLiteral( "overrideLabelFont" ) ) )
    {
      overrideFont = element.attribute( QStringLiteral( "overrideLabelFont" ) ) == QChar( '1' );
    }
  }
}
 
QDomElement QgsAttributeEditorElement::LabelStyle::writeXml( QDomDocument &document ) const
{
  QDomElement elem {  document.createElement( QStringLiteral( "labelStyle" ) ) };
  elem.setAttribute( QStringLiteral( "labelColor" ), QgsSymbolLayerUtils::encodeColor( color ) );
  elem.appendChild( QgsFontUtils::toXmlElement( font, document, QStringLiteral( "labelFont" ) ) );
  elem.setAttribute( QStringLiteral( "overrideLabelColor" ), overrideColor ? QChar( '1' ) : QChar( '0' ) );
  elem.setAttribute( QStringLiteral( "overrideLabelFont" ), overrideFont ? QChar( '1' ) : QChar( '0' ) );
  return elem;
}
 
bool QgsAttributeEditorElement::LabelStyle::operator==( const LabelStyle &other ) const
{
  return overrideColor == other.overrideColor && overrideFont == other.overrideFont && color == other.color && font == other.font;
}