[LyX/master] Remove left/right spacing around top/left buttons

[Jean-Marc Lasgouttes]

commit d2f23c303cc96e74fcec480f392f3dcce334ba8f
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Tue Feb 9 16:12:16 2021 +0100

    Remove left/right spacing around top/left buttons
    
    This makes collapsible insets look better.
    
    Fixes #10323.
---
 src/insets/InsetCollapsible.cpp |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/insets/InsetCollapsible.cpp b/src/insets/InsetCollapsible.cpp
index 24aca66..ac42e1d 100644
--- a/src/insets/InsetCollapsible.cpp
+++ b/src/insets/InsetCollapsible.cpp
@@ -187,9 +187,12 @@ Dimension InsetCollapsible::dimensionCollapsed(BufferView const & bv) const
 {
 	Dimension dim;
 	FontInfo labelfont(getLabelfont());
+	int const offset =
+		(geometry(bv) != LeftButton && geometry(bv) != TopButton)
+		? Inset::textOffset(&bv) : 0;
 	labelfont.realize(sane_font);
 	theFontMetrics(labelfont).buttonText(
-		buttonLabel(bv), Inset::textOffset(&bv), dim.wid, dim.asc, dim.des);
+		buttonLabel(bv), offset, dim.wid, dim.asc, dim.des);
 	return dim;
 }