From: Abdelrazak Younes <younes@lyx.org>
Date: Tue, 21 Nov 2006 09:04:54 +0000 (+0000)
Subject: Add some comments WRT to painting strategy.
X-Git-Tag: 1.6.10~11804
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=e17cb17ef90aaaf01385a01983dbdc65edac48f2;p=features.git

Add some comments WRT to painting strategy.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16003 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/lyxfunc.C b/src/lyxfunc.C
index 1975bce2e9..582806ea8b 100644
--- a/src/lyxfunc.C
+++ b/src/lyxfunc.C
@@ -1712,12 +1712,17 @@ void LyXFunc::dispatch(FuncRequest const & cmd)
 		}
 
 		if (lyx_view_ && view()->buffer()) {
-			// Redraw screen unless explicitly told otherwise.
-			// This also initializes the position cache for all insets
-			// in (at least partially) visible top-level paragraphs.
-			std::pair<bool, bool> needSecondUpdate = view()->update(updateFlags);
+			// BufferView::update() updates the ViewMetricsInfo and
+			// also initializes the position cache for all insets in
+			// (at least partially) visible top-level paragraphs.
+			std::pair<bool, bool> needSecondUpdate 
+				= view()->update(updateFlags);
 
+			// Redraw screen unless explicitly told otherwise.
 			if (needSecondUpdate.first)
+				// Buffer::changed() signals that a repaint is needed.
+				// The frontend (WorkArea) knows which area to repaint
+				// thanks to the ViewMetricsInfo updated above.
 				view()->buffer()->changed();
 
 			lyx_view_->updateStatusBar();