Changeset 561 for trunk/src/gui/text/qsyntaxhighlighter.cpp

Timestamp:

Feb 11, 2010, 11:19:06 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.6.1 sources.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/text/qsyntaxhighlighter.cpp (modified) (8 diffs)

trunk/src/gui/text/qsyntaxhighlighter.cpp

@@ -2 +2 @@
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the QtGui module of the Qt Toolkit.
@@ -21 +22 @@
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
@@ -34 +34 @@
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
@@ -66 +66 @@
     void _q_reformatBlocks(int from, int charsRemoved, int charsAdded);
     void reformatBlock(QTextBlock block);
+    
+    inline void rehighlight(QTextCursor &cursor, QTextCursor::MoveOperation operation) {
+        QObject::disconnect(doc, SIGNAL(contentsChange(int,int,int)),
+                            q_func(), SLOT(_q_reformatBlocks(int,int,int)));
+        cursor.beginEditBlock();
+        int from = cursor.position();
+        cursor.movePosition(operation);
+        _q_reformatBlocks(from, 0, cursor.position() - from);
+        cursor.endEditBlock();
+        QObject::connect(doc, SIGNAL(contentsChange(int,int,int)),
+                         q_func(), SLOT(_q_reformatBlocks(int,int,int)));
+    }
 
     inline void _q_delayedRehighlight() {
@@ -159 +171 @@
 
     int endPosition;
-    QTextBlock lastBlock = doc->findBlock(from + charsAdded);
+    QTextBlock lastBlock = doc->findBlock(from + charsAdded + (charsRemoved > 0 ? 1 : 0));
     if (lastBlock.isValid())
         endPosition = lastBlock.position() + lastBlock.length();
@@ -208 +220 @@
     \since 4.1
 
-    \ingroup text
+    \ingroup richtext-processing
 
     The QSyntaxHighlighter class is a base class for implementing
@@ -356 +368 @@
     \since 4.2
 
-    Redoes the highlighting of the whole document.
+    Reapplies the highlighting to the whole document.
+
+    \sa rehighlightBlock()
 */
 void QSyntaxHighlighter::rehighlight()
@@ -364 +378 @@
         return;
 
-    disconnect(d->doc, SIGNAL(contentsChange(int,int,int)),
-               this, SLOT(_q_reformatBlocks(int,int,int)));
     QTextCursor cursor(d->doc);
-    cursor.beginEditBlock();
-    cursor.movePosition(QTextCursor::End);
-    d->_q_reformatBlocks(0, 0, cursor.position());
-    cursor.endEditBlock();
-    connect(d->doc, SIGNAL(contentsChange(int,int,int)),
-            this, SLOT(_q_reformatBlocks(int,int,int)));
+    d->rehighlight(cursor, QTextCursor::End);
+}
+
+/*!
+    \since 4.6
+
+    Reapplies the highlighting to the given QTextBlock \a block.
+    
+    \sa rehighlight()
+*/
+void QSyntaxHighlighter::rehighlightBlock(const QTextBlock &block)
+{
+    Q_D(QSyntaxHighlighter);
+    if (!d->doc)
+        return;
+
+    QTextCursor cursor(block);
+    d->rehighlight(cursor, QTextCursor::EndOfBlock);
 }