1 files changed, 159 insertions, 0 deletions
diff --git a/lib/kformula/glyphelement.cpp b/lib/kformula/glyphelement.cpp
new file mode 100644
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--- /dev/null
+++ b/lib/kformula/glyphelement.cpp
@@ -0,0 +1,159 @@
+/* This file is part of the KDE project
+   Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
+
+   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 <tqfontmetrics.h>
+#include <tqpainter.h>
+
+#include "fontstyle.h"
+#include "glyphelement.h"
+
+KFORMULA_NAMESPACE_BEGIN
+
+GlyphElement::GlyphElement( BasicElement* parent ) : TextElement( ' ', false, parent ) {
+}
+
+bool GlyphElement::readAttributesFromMathMLDom( const TQDomElement& element )
+{
+    if ( !BasicElement::readAttributesFromMathMLDom( element ) ) {
+        return false;
+    }
+
+    // MathML Section 3.2.9.2
+    m_fontFamily = element.attribute( "fontfamily" );
+    if ( m_fontFamily.isNull() ) {
+        kdWarning( DEBUGID ) << "Required attribute fontfamily not found in glyph element\n";
+        return false;
+    }
+    TQString indexStr = element.attribute( "index" );
+    if ( indexStr.isNull() ) {
+        kdWarning( DEBUGID ) << "Required attribute index not found in glyph element\n";
+        return false;
+    }
+    bool ok;
+    ushort index = indexStr.toUShort( &ok );
+    if ( ! ok ) {
+        kdWarning( DEBUGID ) << "Invalid index value in glyph element\n";
+        return false;
+    }
+    m_char = TQChar( index );
+
+    m_alt = element.attribute( "alt" );
+    if ( m_alt.isNull() ) {
+        kdWarning( DEBUGID ) << "Required attribute alt not found in glyph element\n";
+        return false;
+    }
+
+    TQStringList missing;
+    FontStyle::testFont( missing, m_fontFamily.lower() );
+    m_hasFont = missing.isEmpty();
+
+    return true;
+}
+
+
+/**
+ * Calculates our width and height and
+ * our children's parentPosition.
+ */
+void GlyphElement::calcSizes( const ContextStyle& context, 
+                              ContextStyle::TextStyle tstyle, 
+                              ContextStyle::IndexStyle /*istyle*/,
+                              StyleAttributes& style )
+{
+    double factor = style.sizeFactor();
+    luPt mySize = context.getAdjustedSize( tstyle, factor );
+    TQRect bound;
+
+    if ( m_hasFont ) {
+        TQFont font( m_fontFamily );
+        font.setPointSizeFloat( context.layoutUnitPtToPt( mySize ) );
+        TQFontMetrics fm ( font );
+        bound = fm.boundingRect( m_char );
+        setWidth( context.ptToLayoutUnitPt( fm.width( m_char ) ) );
+    }
+    else {
+        TQFont font( context.getDefaultFont() );
+        font.setPointSizeFloat( context.layoutUnitPtToPt( mySize ) );
+        TQFontMetrics fm ( font );
+        bound = fm.boundingRect( m_alt );
+        setWidth( context.ptToLayoutUnitPt( fm.width( m_alt ) ) );
+    }
+    setHeight( context.ptToLayoutUnitPt( bound.height() ) );
+    setBaseline( context.ptToLayoutUnitPt( -bound.top() ) );
+    
+    // There are some glyphs in TeX that have
+    // baseline==0. (\int, \sum, \prod)
+    if ( getBaseline() == 0 ) {
+        setBaseline( -1 );
+    }
+}
+
+/**
+ * Draws the whole element including its children.
+ * The `parentOrigin' is the point this element's parent starts.
+ * We can use our parentPosition to get our own origin then.
+ */
+void GlyphElement::draw( TQPainter& painter, const LuPixelRect& /*r*/,
+                        const ContextStyle& context,
+                        ContextStyle::TextStyle tstyle,
+                        ContextStyle::IndexStyle /*istyle*/,
+                        StyleAttributes& style,
+                        const LuPixelPoint& parentOrigin )
+{
+    LuPixelPoint myPos( parentOrigin.x()+getX(), parentOrigin.y()+getY() );
+    //if ( !LuPixelRect( myPos.x(), myPos.y(), getWidth(), getHeight() ).intersects( r ) )
+    //    return;
+
+    double factor = style.sizeFactor();
+    luPt mySize = context.getAdjustedSize( tstyle, factor );
+    TQFont font;
+    TQString text;
+    
+    if ( m_hasFont ) {
+        painter.setPen( style.color() );
+        setCharStyle( style.charStyle() );
+        setCharFamily( style.charFamily() );
+        font = TQFont( m_fontFamily );
+        text = m_char;
+        painter.fillRect( context.layoutUnitToPixelX( myPos.x() ),
+                          context.layoutUnitToPixelY( myPos.y() ),
+                          context.layoutUnitToPixelX( getWidth() ),
+                          context.layoutUnitToPixelY( getHeight() ),
+                          style.background() );
+    }
+    else {
+        painter.setPen( context.getErrorColor() );
+        font = context.getDefaultFont();
+        text = m_alt;
+    }
+    font.setPointSizeFloat( context.layoutUnitToFontSize( mySize, false ) );
+    painter.setFont( font );
+    painter.drawText( context.layoutUnitToPixelX( myPos.x() ),
+                      context.layoutUnitToPixelY( myPos.y()+getBaseline() ),
+                      text );
+}
+    
+void GlyphElement::writeMathMLAttributes( TQDomElement& element ) const
+{
+    element.setAttribute( "fontfamily", m_fontFamily );
+    element.setAttribute( "index", m_char.unicode() );
+    element.setAttribute( "alt", m_alt );
+}
+
+KFORMULA_NAMESPACE_END