From 3f33543cee7a40f46a30914d5ad2b248bcf18d62 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Wed, 4 Dec 2024 17:18:33 +0100
Subject: [PATCH] Linux: fixed slightly different font size (or letter width)
 used to paint HTML text when default font family is _Cantarell_ (e.g. on
 Fedora) (issue #912)

the removed use of floating point font size is similar to what is done in JDK for GTK Look and Feel:
- https://bugs.openjdk.org/browse/JDK-6979979
- https://github.com/openjdk/jdk/commit/306f12db9e942706887b21c0ea6820c088ccdb6b
---
 CHANGELOG.md                                  |  3 +++
 .../com/formdev/flatlaf/LinuxFontPolicy.java  | 21 ++++++-------------
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40feda24..2502c516 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,9 @@ FlatLaf Change Log
 - Theme Editor: Fixed using color picker on secondary screen.
 - Fixed detection of Windows 11 if custom exe launcher does not specify Windows
   10+ compatibility in application manifest. (issue #916)
+- Linux: Fixed slightly different font size (or letter width) used to paint HTML
+  text when default font family is _Cantarell_ (e.g. on Fedora). (issue #912)
+
 
 ## 3.5.2
 
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/LinuxFontPolicy.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/LinuxFontPolicy.java
index 99ed8e11..3c12f0b5 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/LinuxFontPolicy.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/LinuxFontPolicy.java
@@ -111,7 +111,7 @@ class LinuxFontPolicy
 		if( logicalFamily != null )
 			family = logicalFamily;
 
-		return createFontEx( family, style, size, dsize );
+		return createFontEx( family, style, size );
 	}
 
 	/**
@@ -121,9 +121,9 @@ class LinuxFontPolicy
 	 * E.g. family 'URW Bookman Light' is not found, but 'URW Bookman' is found.
 	 * If still not found, then font of family 'Dialog' is returned.
 	 */
-	private static Font createFontEx( String family, int style, int size, double dsize ) {
+	private static Font createFontEx( String family, int style, int size ) {
 		for(;;) {
-			Font font = createFont( family, style, size, dsize );
+			Font font = FlatLaf.createCompositeFont( family, style, size );
 
 			if( Font.DIALOG.equals( family ) )
 				return font;
@@ -135,7 +135,7 @@ class LinuxFontPolicy
 				// - character width is zero (e.g. font Cantarell; Fedora; Oracle Java 8)
 				FontMetrics fm = StyleContext.getDefaultStyleContext().getFontMetrics( font );
 				if( fm.getHeight() > size * 2 || fm.stringWidth( "a" ) == 0 )
-					return createFont( Font.DIALOG, style, size, dsize );
+					return FlatLaf.createCompositeFont( Font.DIALOG, style, size );
 
 				return font;
 			}
@@ -143,7 +143,7 @@ class LinuxFontPolicy
 			// find last word in family
 			int index = family.lastIndexOf( ' ' );
 			if( index < 0 )
-				return createFont( Font.DIALOG, style, size, dsize );
+				return FlatLaf.createCompositeFont( Font.DIALOG, style, size );
 
 			// check whether last work contains some font weight (e.g. Ultra-Bold or Heavy)
 			String lastWord = family.substring( index + 1 ).toLowerCase( Locale.ENGLISH );
@@ -155,15 +155,6 @@ class LinuxFontPolicy
 		}
 	}
 
-	private static Font createFont( String family, int style, int size, double dsize ) {
-		Font font = FlatLaf.createCompositeFont( family, style, size );
-
-		// set font size in floating points
-		font = font.deriveFont( style, (float) dsize );
-
-		return font;
-	}
-
 	private static double getGnomeFontScale() {
 		// do not scale font here if JRE scales
 		if( isSystemScaling() )
@@ -257,7 +248,7 @@ class LinuxFontPolicy
 		if( size < 1 )
 			size = 1;
 
-		return createFont( family, style, size, dsize );
+		return FlatLaf.createCompositeFont( family, style, size );
 	}
 
 	@SuppressWarnings( "MixedMutabilityReturnType" ) // Error Prone