formulaelement.cc
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00021 #include <iostream>
00022 #include <qpainter.h>
00023
00024 #include <kdebug.h>
00025
00026 #include "contextstyle.h"
00027 #include "formulacursor.h"
00028 #include "formulaelement.h"
00029 #include "kformulacontainer.h"
00030 #include "kformuladocument.h"
00031
00032 KFORMULA_NAMESPACE_BEGIN
00033
00034 FormulaElement::FormulaElement(FormulaDocument* container)
00035 : document( container ), baseSize( 20 ), ownBaseSize( false )
00036 {
00037 }
00038
00039
00040 void FormulaElement::setBaseSize( int size )
00041 {
00042 if ( size > 0 ) {
00043 baseSize = size;
00044 ownBaseSize = true;
00045 }
00046 else {
00047 ownBaseSize = false;
00048 }
00049 document->baseSizeChanged( size, ownBaseSize );
00050 }
00051
00052
00056 BasicElement* FormulaElement::goToPos( FormulaCursor* cursor, const LuPixelPoint& point )
00057 {
00058 bool handled = false;
00059 BasicElement* element = inherited::goToPos(cursor, handled, point, LuPixelPoint());
00060 if (element == 0) {
00061
00062 cursor->setTo(this, countChildren());
00063
00064 return this;
00065 }
00066 return element;
00067 }
00068
00069 void FormulaElement::elementRemoval(BasicElement* child)
00070 {
00071 document->elementRemoval(child);
00072 }
00073
00074 void FormulaElement::changed()
00075 {
00076 document->changed();
00077 }
00078
00079 void FormulaElement::cursorHasMoved( FormulaCursor* cursor )
00080 {
00081 document->cursorHasMoved( cursor );
00082 }
00083
00084 void FormulaElement::moveOutLeft( FormulaCursor* cursor )
00085 {
00086 document->moveOutLeft( cursor );
00087 }
00088
00089 void FormulaElement::moveOutRight( FormulaCursor* cursor )
00090 {
00091 document->moveOutRight( cursor );
00092 }
00093
00094 void FormulaElement::moveOutBelow( FormulaCursor* cursor )
00095 {
00096 document->moveOutBelow( cursor );
00097 }
00098
00099 void FormulaElement::moveOutAbove( FormulaCursor* cursor )
00100 {
00101 document->moveOutAbove( cursor );
00102 }
00103
00104 void FormulaElement::tell( const QString& msg )
00105 {
00106 document->tell( msg );
00107 }
00108
00109 void FormulaElement::removeFormula( FormulaCursor* cursor )
00110 {
00111 document->removeFormula( cursor );
00112 }
00113
00114 void FormulaElement::insertFormula( FormulaCursor* cursor )
00115 {
00116 document->insertFormula( cursor );
00117 }
00118
00119 void FormulaElement::calcSizes( const ContextStyle& style,
00120 ContextStyle::TextStyle tstyle,
00121 ContextStyle::IndexStyle istyle )
00122 {
00123 inherited::calcSizes( style, tstyle, istyle );
00124 }
00125
00126
00127 void FormulaElement::draw( QPainter& painter, const LuPixelRect& r,
00128 const ContextStyle& context,
00129 ContextStyle::TextStyle tstyle,
00130 ContextStyle::IndexStyle istyle,
00131 const LuPixelPoint& parentOrigin )
00132 {
00133 inherited::draw( painter, r, context, tstyle, istyle, parentOrigin );
00134 }
00135
00136
00140 void FormulaElement::calcSizes( ContextStyle& context )
00141 {
00142
00143 if ( ownBaseSize ) {
00144 context.setSizeFactor( static_cast<double>( getBaseSize() )/context.baseSize() );
00145 }
00146 else {
00147 context.setSizeFactor( 1 );
00148 }
00149 calcSizes( context, context.getBaseTextStyle(),
00150 ContextStyle::normal );
00151 }
00152
00156 void FormulaElement::draw( QPainter& painter, const LuPixelRect& r,
00157 ContextStyle& context )
00158 {
00159
00160 if ( ownBaseSize ) {
00161 context.setSizeFactor( static_cast<double>( getBaseSize() )/context.baseSize() );
00162 }
00163 else {
00164 context.setSizeFactor( 1 );
00165 }
00166 draw( painter, r, context, context.getBaseTextStyle(),
00167 ContextStyle::normal, LuPixelPoint() );
00168 }
00169
00170 KCommand* FormulaElement::buildCommand( Container* container, Request* request )
00171 {
00172 switch ( *request ) {
00173 case req_compactExpression:
00174 return 0;
00175 default:
00176 break;
00177 }
00178 return inherited::buildCommand( container, request );
00179 }
00180
00181 const SymbolTable& FormulaElement::getSymbolTable() const
00182 {
00183 return document->getSymbolTable();
00184 }
00185
00186
00187 QDomElement FormulaElement::emptyFormulaElement( QDomDocument& doc )
00188 {
00189 QDomElement element = doc.createElement( getTagName() );
00190
00191
00192
00193
00194
00195
00196 return element;
00197 }
00198
00199 KCommand* FormulaElement::input( Container* container, QKeyEvent* event )
00200 {
00201 QChar ch = event->text().at( 0 );
00202 if ( !ch.isPrint() ) {
00203 int action = event->key();
00204
00205
00206
00207 switch ( action ) {
00208 case Qt::Key_Return:
00209 case Qt::Key_Enter: {
00210 FormulaCursor* cursor = container->activeCursor();
00211 insertFormula( cursor );
00212 return 0;
00213 }
00214 }
00215 }
00216 return inherited::input( container, event );
00217 }
00218
00222 void FormulaElement::writeDom(QDomElement element)
00223 {
00224 inherited::writeDom(element);
00225 element.setAttribute( "VERSION", "6" );
00226 if ( ownBaseSize ) {
00227 element.setAttribute( "BASESIZE", baseSize );
00228 }
00229 }
00230
00235 bool FormulaElement::readAttributesFromDom(QDomElement element)
00236 {
00237 if (!inherited::readAttributesFromDom(element)) {
00238 return false;
00239 }
00240 int version = -1;
00241 QString versionStr = element.attribute( "VERSION" );
00242 if ( !versionStr.isNull() ) {
00243 version = versionStr.toInt();
00244 }
00245 if ( version > -1 ) {
00246
00247
00248 if ( version < 4 ) {
00249 convertNames( element );
00250 }
00251 }
00252 QString baseSizeStr = element.attribute( "BASESIZE" );
00253 if ( !baseSizeStr.isNull() ) {
00254 ownBaseSize = true;
00255 baseSize = baseSizeStr.toInt();
00256 }
00257 else {
00258 ownBaseSize = false;
00259 }
00260 return true;
00261 }
00262
00268 bool FormulaElement::readContentFromDom(QDomNode& node)
00269 {
00270 return inherited::readContentFromDom(node);
00271 }
00272
00273 void FormulaElement::convertNames( QDomNode node )
00274 {
00275 if ( node.isElement() && ( node.nodeName().upper() == "TEXT" ) ) {
00276 QDomNamedNodeMap attr = node.attributes();
00277 QDomAttr ch = attr.namedItem( "CHAR" ).toAttr();
00278 if ( ch.value() == "\\" ) {
00279 QDomNode sequence = node.parentNode();
00280 QDomDocument doc = sequence.ownerDocument();
00281 QDomElement nameseq = doc.createElement( "NAMESEQUENCE" );
00282 sequence.replaceChild( nameseq, node );
00283
00284 bool inName = true;
00285 while ( inName ) {
00286 inName = false;
00287 QDomNode n = nameseq.nextSibling();
00288 if ( n.isElement() && ( n.nodeName().upper() == "TEXT" ) ) {
00289 attr = n.attributes();
00290 ch = attr.namedItem( "CHAR" ).toAttr();
00291 if ( ch.value().at( 0 ).isLetter() ) {
00292 nameseq.appendChild( sequence.removeChild( n ) );
00293 inName = true;
00294 }
00295 }
00296 }
00297 }
00298 }
00299 if ( node.hasChildNodes() ) {
00300 QDomNode n = node.firstChild();
00301 while ( !n.isNull() ) {
00302 convertNames( n );
00303 n = n.nextSibling();
00304 }
00305 }
00306 }
00307
00308 QString FormulaElement::toLatex()
00309 {
00310 return inherited::toLatex();
00311 }
00312
00313 void FormulaElement::writeMathML( QDomDocument& doc, QDomNode parent, bool oasisFormat )
00314 {
00315 QDomElement de;
00316 if ( !oasisFormat )
00317 de = doc.createElementNS( "http://www.w3.org/1998/Math/MathML",
00318 "math" );
00319 else
00320 de =doc.createElement( "math:semantics" );
00321
00322 inherited::writeMathML( doc, de, oasisFormat );
00323 parent.appendChild( de );
00324 }
00325
00326 KFORMULA_NAMESPACE_END
This file is part of the documentation for lib Library Version 1.4.2.