1 files changed, 71 insertions, 0 deletions
diff --git a/kregexpeditor/qtregexphighlighter.cpp b/kregexpeditor/qtregexphighlighter.cpp
new file mode 100644
index 0000000..1983b89
--- /dev/null
+++ b/kregexpeditor/qtregexphighlighter.cpp
@@ -0,0 +1,71 @@
+/*
+ *  Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License version 2 as published by the Free Software Foundation.
+ *
+ *  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 "qtregexphighlighter.h"
+#include <qregexp.h>
+QtRegexpHighlighter::QtRegexpHighlighter( QTextEdit* editor )
+    :RegexpHighlighter( editor ), _editor( editor )
+{
+}
+
+int QtRegexpHighlighter::highlightParagraph( const QString & text, int endStateOfLastPara )
+{
+    QRegExp regexp( _regexp );
+    regexp.setCaseSensitive( _caseSensitive );
+    regexp.setMinimal( _minimal );
+
+    setFormat( 0, text.length(), _editor->font(), Qt::black );
+
+    if ( !regexp.isValid() || regexp.isEmpty() ) {
+        return 0;
+    }
+
+    // ------------------------------ Process with the regular expression.
+    QColor colors[] = { Qt::red, Qt::blue };
+    int color = endStateOfLastPara;
+    if ( color < 0 || color > 1 )
+        color = 0;
+
+    int index = 0;
+    int start, length;
+    while ( (index = regexp.search( text, index ) ) != -1 && index < (int) text.length()) {
+        if ( regexp.pos(1) != -1 ) {
+            start = regexp.pos(1);
+            length = regexp.cap(1).length();
+        }
+        else {
+            start = index;
+            length = regexp.matchedLength();
+        }
+
+        if ( start != index )
+            setFormat( index, start-index, colors[color] );
+
+        QFont font = _editor->font();
+        font.setUnderline( true );
+        font.setPointSize( (int) (font.pointSize() * 1.3) );
+        setFormat( start, length, font, colors[color] );
+
+        if ( length + (start-index) != regexp.matchedLength() )
+            setFormat( start+length, regexp.matchedLength()-length-(start-index), colors[color] );
+
+        index +=  QMAX( 1, regexp.matchedLength() ); // ensure progress when matching for example ^ or \b
+        color = (color+1)%2;
+    }
+    return color;
+}
+