From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Wed, 10 Apr 2024 10:31:12 +0000 (+0200)
Subject: Fixup 'Avoid metrics computation on resize when width did not change'
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=9fa3a90f2672b2d454f0cd24f36265151520f5c3;p=features.git

Fixup 'Avoid metrics computation on resize when width did not change'

When the width of the window did not change, computing full metrics is
not necessary in BufferView::resize(), but it is better to redraw the
screen (especially with Wayland).

Typical use cases are when using M-x to open the minibuffer or going
in and out of an equation (which shows/hides the math toolbars).

(cherry picked from commit 83e7c74f6b4ce06936f11a5239a6c88f019a43ff)
---

diff --git a/src/BufferView.cpp b/src/BufferView.cpp
index c03f928c4d..1056459ea2 100644
--- a/src/BufferView.cpp
+++ b/src/BufferView.cpp
@@ -2492,8 +2492,11 @@ void BufferView::resize(int width, int height)
 		// Clear the paragraph height cache.
 		d->par_height_.clear();
 		// Redo the metrics.
-		updateMetrics();
+		updateMetrics(true);
 	}
+	// metrics is OK, full drawing is necessary now
+	d->update_flags_ = (d->update_flags_ & ~Update::Force) | Update::ForceDraw;
+	d->update_strategy_ = FullScreenUpdate;
 }