Setup font rendering hints in UIDefaults.

Skip kerning for macOS < 10.14.

core/src/main/java/com/github/weisj/darklaf/graphics/GraphicsUtil.java

@@ -25,7 +25,6 @@
 package com.github.weisj.darklaf.graphics;
 
 import java.awt.*;
-import java.util.Map;
 
 import com.github.weisj.darklaf.util.PropertyValue;
 import com.github.weisj.darklaf.util.SystemInfo;
@@ -36,6 +35,8 @@ import com.github.weisj.darklaf.util.SystemInfo;
  */
 public final class GraphicsUtil {
 
+    public static final String DESKTOP_HINTS_KEY = "awt.font.desktophints";
+
     private GraphicsUtil() {}
 
     public static GraphicsContext setupAntialiasing(final Graphics g2) {
@@ -45,19 +46,12 @@ public final class GraphicsUtil {
     public static GraphicsContext setupAntialiasing(final Graphics g2, final boolean enableAA,
                                                     final boolean ignoreSystemSettings) {
         GraphicsContext config = new GraphicsContext(g2);
-        if (g2 instanceof Graphics2D) {
+        if (ignoreSystemSettings && g2 instanceof Graphics2D) {
             Graphics2D g = (Graphics2D) g2;
-            Toolkit tk = Toolkit.getDefaultToolkit();
-            Map<?, ?> map = (Map<?, ?>) tk.getDesktopProperty("awt.font.desktophints");
-            if (map != null && !ignoreSystemSettings) {
-                g.addRenderingHints(map);
-            } else {
             g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
-                                   enableAA
-                                           ? RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR
+                               enableAA ? RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR
                                        : RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
         }
-        }
         return config;
     }
 

core/src/main/java/com/github/weisj/darklaf/task/FontDefaultsInitTask.java

@@ -37,6 +37,7 @@ import javax.swing.plaf.UIResource;
 
 import com.github.weisj.darklaf.DarkLaf;
 import com.github.weisj.darklaf.PropertyLoader;
+import com.github.weisj.darklaf.graphics.GraphicsUtil;
 import com.github.weisj.darklaf.theme.Theme;
 import com.github.weisj.darklaf.theme.info.FontSizeRule;
 import com.github.weisj.darklaf.uiresource.DarkFontUIResource;
@@ -64,6 +65,23 @@ public class FontDefaultsInitTask implements DefaultsInitTask {
             patchMacOSFonts(defaults);
         }
         applyFontRule(currentTheme, defaults);
+        setupRenderingHints(defaults);
+    }
+
+    private void setupRenderingHints(final UIDefaults defaults) {
+        if (!SystemInfo.isMacOSMojave) {
+            Toolkit toolkit = Toolkit.getDefaultToolkit();
+            Map<?, ?> desktopHints = (Map<?, ?>) toolkit.getDesktopProperty(GraphicsUtil.DESKTOP_HINTS_KEY);
+
+            Object aaHint = (desktopHints == null) ? null : desktopHints.get(RenderingHints.KEY_TEXT_ANTIALIASING);
+            if (aaHint != null
+                && aaHint != RenderingHints.VALUE_TEXT_ANTIALIAS_OFF
+                && aaHint != RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT) {
+                defaults.put(RenderingHints.KEY_TEXT_ANTIALIASING, aaHint);
+                defaults.put(RenderingHints.KEY_TEXT_LCD_CONTRAST,
+                             desktopHints.get(RenderingHints.KEY_TEXT_LCD_CONTRAST));
+            }
+        }
     }
 
     private void loadFontProperties(final UIDefaults defaults) {
@@ -83,7 +101,8 @@ public class FontDefaultsInitTask implements DefaultsInitTask {
 
     private Font macOSFontFromFont(final Font font) {
         String fontName = SystemInfo.isMacOSCatalina ? MAC_OS_CATALINA_FONT_NAME : MAC_OS_FONT_NAME;
-        Font macFont = new Font(fontName, font.getStyle(), font.getSize()).deriveFont(ENABLE_KERNING);
+        Font macFont = new Font(fontName, font.getStyle(), font.getSize());
+        if (SystemInfo.isMacOSMojave) macFont = macFont.deriveFont(ENABLE_KERNING);
         if (font instanceof UIResource) {
             macFont = new DarkFontUIResource(macFont);
         }