Added QSyntaxHighlighter::rehighlightBlock(QTextBlock)

Merge-request: 379
Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/src/gui/text/qsyntaxhighlighter.cpp b/src/gui/text/qsyntaxhighlighter.cpp
index db1a38e..ccf229e 100644
--- a/src/gui/text/qsyntaxhighlighter.cpp
+++ b/src/gui/text/qsyntaxhighlighter.cpp
@@ -356,6 +356,8 @@ QTextDocument *QSyntaxHighlighter::document() const
     \since 4.2
 
     Redoes the highlighting of the whole document.
+
+    \sa rehighlightBlock()
 */
 void QSyntaxHighlighter::rehighlight()
 {
@@ -375,6 +377,31 @@ void QSyntaxHighlighter::rehighlight()
 }
 
 /*!
+    \since 4.6
+
+    Redoes the highlighting of the given QTextBlock \a block.
+    
+    \sa rehighlight()
+*/
+void QSyntaxHighlighter::rehighlightBlock(const QTextBlock &block)
+{
+    Q_D(QSyntaxHighlighter);
+    if (!d->doc)
+        return;
+
+    disconnect(d->doc, SIGNAL(contentsChange(int,int,int)),
+               this, SLOT(_q_reformatBlocks(int,int,int)));
+    QTextCursor cursor(block);
+    cursor.beginEditBlock();
+    int from = cursor.position();
+    cursor.movePosition(QTextCursor::EndOfBlock);
+    d->_q_reformatBlocks(from, 0, cursor.position() - from);
+    cursor.endEditBlock();
+    connect(d->doc, SIGNAL(contentsChange(int,int,int)),
+            this, SLOT(_q_reformatBlocks(int,int,int)));
+}
+
+/*!
     \fn void QSyntaxHighlighter::highlightBlock(const QString &text)
 
     Highlights the given text block. This function is called when
diff --git a/src/gui/text/qsyntaxhighlighter.h b/src/gui/text/qsyntaxhighlighter.h
index 4e5271b..ee249b8 100644
--- a/src/gui/text/qsyntaxhighlighter.h
+++ b/src/gui/text/qsyntaxhighlighter.h
@@ -78,6 +78,7 @@ public:
 
 public Q_SLOTS:
     void rehighlight();
+    void rehighlightBlock(const QTextBlock &block);
 
 protected:
     virtual void highlightBlock(const QString &text) = 0;