Optimize by reducing invalidation as this can be costly.

If all of the text area or margin area is invalidated then remember this and
don't do any more invalidations for that area until the window is painted.
This reduced the time taken to replace each \r\n with \n\n in very large
files by a factor of 3.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/Editor.h b/src/Editor.h
index 417700ed5..37df93c93 100644
--- a/src/Editor.h
+++ b/src/Editor.h
@@ -188,6 +188,10 @@ protected:	// ScintillaBase subclass needs access to much of Editor
 	Window wMain;	///< The Scintilla parent window
 	Window wMargin;	///< May be separate when using a scroll view for wMain
 
+	// Optimization that avoids superfluous invalidations
+	bool redrawPendingText = false;
+	bool redrawPendingMargin = false;
+
 	/** Style resources may be expensive to allocate so are cached between uses.
 	 * When a style attribute is changed, this cache is flushed. */
 	bool stylesValid;