Fixed shadow painting.

Made square buttons have zero arc.
Removed unnecessary background painting for password fields.
Removed author tags where not needed anymore.

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

@@ -27,6 +27,7 @@ package com.github.weisj.darklaf.graphics;
 import java.awt.*;
 import java.awt.geom.Ellipse2D;
 import java.awt.geom.Path2D;
+import java.awt.geom.Rectangle2D;
 import java.awt.geom.RoundRectangle2D;
 
 import javax.swing.*;
@@ -117,10 +118,17 @@ public class PaintUtil {
     private static void doPaint(final Graphics2D g, final float width, final float height, final float arc,
                                 final float bw, final boolean inside) {
         GraphicsContext context = GraphicsUtil.setupStrokePainting(g);
+        Shape outerRect;
+        Shape innerRect;
+        if (Scale.equalWithError(arc, 0)) {
+            outerRect = new Rectangle2D.Float(0, 0, width, height);
+            innerRect = new Rectangle2D.Float(bw, bw, width - 2 * bw, height - 2 * bw);
+        } else {
             float outerArc = inside ? arc : arc + bw;
             float innerArc = inside ? arc - bw : arc;
-        Shape outerRect = new RoundRectangle2D.Float(0, 0, width, height, outerArc, outerArc);
-        Shape innerRect = new RoundRectangle2D.Float(bw, bw, width - 2 * bw, height - 2 * bw, innerArc, innerArc);
+            outerRect = new RoundRectangle2D.Float(0, 0, width, height, outerArc, outerArc);
+            innerRect = new RoundRectangle2D.Float(bw, bw, width - 2 * bw, height - 2 * bw, innerArc, innerArc);
+        }
         Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD);
         path.append(outerRect, false);
         path.append(innerRect, false);

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

@@ -60,7 +60,12 @@ public class FontDefaultsInitTask implements DefaultsInitTask {
                                                                                                                        TextAttribute.KERNING_ON);
     private static final Map<AttributedCharacterIterator.Attribute, Integer> DISABLE_KERNING = Collections.singletonMap(TextAttribute.KERNING,
                                                                                                                         null);
+    /*
+     * On Catalina the are issues with font kerning and .AppleSystemUIFont.
+     * For now Helvetica Neue is used instead.
+     */
     private static final String MAC_OS_CATALINA_FONT_NAME = ".AppleSystemUIFont";
+    private static final String MAC_OS_CATALINA_FONT_NAME_FALLBACK = "Helvetica Neue";
     private static final String WINDOWS_10_FONT_NAME = "Segoe UI";
     private static final String MAC_OS_FONT_NAME = ".SF NS Text";
 
@@ -74,16 +79,18 @@ public class FontDefaultsInitTask implements DefaultsInitTask {
             patchOSFonts(defaults, this::mapWindowsFont);
         }
 
+        if (SystemInfo.isMacOSCatalina) {
+            defaults.put(RenderingHints.KEY_FRACTIONALMETRICS,
+                         RenderingHints.VALUE_FRACTIONALMETRICS_ON);
+        }
+
         if (systemKerningEnabled()) {
             List<String> kerningFontsList = PropertyUtil.getList(defaults, KERNING_LIST, String.class);
             if (!kerningFontsList.isEmpty()) {
                 Set<String> kerningFonts = new HashSet<>(kerningFontsList);
                 boolean enabledAll = ALL_FONTS.equals(kerningFontsList.get(0));
 
-                setupKerningPerFont(defaults, key -> {
-                    if (enabledAll) return true;
-                    return kerningFonts.contains(key);
-                });
+                setupKerningPerFont(defaults, key -> enabledAll || kerningFonts.contains(key));
             }
         }
 

core/src/main/java/com/github/weisj/darklaf/ui/button/DarkButtonBorder.java

@@ -38,7 +38,6 @@ import com.github.weisj.darklaf.util.DarkUIUtil;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkButtonBorder implements Border, UIResource {
@@ -89,7 +88,6 @@ public class DarkButtonBorder implements Border, UIResource {
     }
 
     public static boolean showDropShadow(final JComponent c) {
-        if (ButtonConstants.isRound(c)) return false;
         return showDropShadow(getCornerFlag(c));
     }
 

core/src/main/java/com/github/weisj/darklaf/ui/button/DarkButtonUI.java

@@ -51,7 +51,6 @@ import com.github.weisj.darklaf.util.PropertyKey;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkButtonUI extends BasicButtonUI implements ButtonConstants {
@@ -198,9 +197,9 @@ public class DarkButtonUI extends BasicButtonUI implements ButtonConstants {
             g.setColor(shadowColor);
             Composite comp = g.getComposite();
             g.setComposite(PaintUtil.getShadowComposite());
-            int sh = Math.max(shadow, 2 * effectiveArc);
-            paintBackgroundRect(g, effectiveArc, bgRect.x, bgRect.y + bgRect.height + shadow - sh,
-                                bgRect.width, sh, false);
+            int stroke = (int) PaintUtil.getStrokeWidth(g);
+            paintBackgroundRect(g, effectiveArc, bgRect.x, bgRect.y + shadow + stroke,
+                                bgRect.width, bgRect.height);
             g.setComposite(comp);
         }
 
@@ -209,16 +208,15 @@ public class DarkButtonUI extends BasicButtonUI implements ButtonConstants {
     }
 
     private void paintBackgroundRect(final Graphics2D g2, final int effectiveArc, final Rectangle bgRect) {
-        paintBackgroundRect(g2, effectiveArc, bgRect.x, bgRect.y, bgRect.width, bgRect.height, true);
+        paintBackgroundRect(g2, effectiveArc, bgRect.x, bgRect.y, bgRect.width, bgRect.height);
     }
 
     private void paintBackgroundRect(final Graphics2D g2, final int effectiveArc,
-                                     final int x, final int y, final int width, final int height,
-                                     final boolean respectBorder) {
+                                     final int x, final int y, final int width, final int height) {
         if (effectiveArc == 0) {
             g2.fillRect(x, y, width, height);
         } else {
-            PaintUtil.fillRoundRect(g2, x, y, width, height, effectiveArc, respectBorder);
+            PaintUtil.fillRoundRect(g2, x, y, width, height, effectiveArc, true);
         }
     }
 

core/src/main/java/com/github/weisj/darklaf/ui/progressbar/DarkProgressBarBorder.java

@@ -27,7 +27,6 @@ package com.github.weisj.darklaf.ui.progressbar;
 import javax.swing.plaf.BorderUIResource;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkProgressBarBorder extends BorderUIResource.EmptyBorderUIResource {

core/src/main/java/com/github/weisj/darklaf/ui/rootpane/DarkRootPaneUI.java

@@ -40,7 +40,6 @@ import com.github.weisj.darklaf.util.PropertyKey;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkRootPaneUI extends BasicRootPaneUI implements HierarchyListener {

core/src/main/java/com/github/weisj/darklaf/ui/scrollpane/DarkScrollBarUI.java

@@ -35,7 +35,6 @@ import com.github.weisj.darklaf.graphics.PaintUtil;
 import com.github.weisj.darklaf.util.ColorUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkScrollBarUI extends BasicScrollBarUI implements ScrollBarConstants {

core/src/main/java/com/github/weisj/darklaf/ui/text/DarkPasswordFieldUI.java

@@ -25,23 +25,19 @@
 package com.github.weisj.darklaf.ui.text;
 
 import java.awt.*;
-import java.awt.event.*;
+import java.awt.event.MouseEvent;
 import java.beans.PropertyChangeEvent;
 import java.util.Arrays;
 
 import javax.swing.*;
-import javax.swing.border.Border;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.text.JTextComponent;
 
-import com.github.weisj.darklaf.graphics.GraphicsContext;
-import com.github.weisj.darklaf.graphics.PaintUtil;
 import com.github.weisj.darklaf.icons.EmptyIcon;
 import com.github.weisj.darklaf.ui.text.bridge.DarkPasswordFieldUIBridge;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkPasswordFieldUI extends DarkPasswordFieldUIBridge {
@@ -51,7 +47,6 @@ public class DarkPasswordFieldUI extends DarkPasswordFieldUIBridge {
     protected Icon show;
     protected Icon showPressed;
     protected int borderSize;
-    protected int arc;
     private char echo_dot = '*';
     private boolean showTriggered = false;
 
@@ -62,38 +57,10 @@ public class DarkPasswordFieldUI extends DarkPasswordFieldUIBridge {
     @Override
     protected void installDefaults() {
         super.installDefaults();
-        borderSize = UIManager.getInt("PasswordField.borderThickness");
-        arc = UIManager.getInt("PasswordField.arc");
         show = UIManager.getIcon("PasswordField.show.icon");
         showPressed = UIManager.getIcon("PasswordField.showPressed.icon");
     }
 
-    protected void paintBackground(final Graphics graphics) {
-        Graphics2D g = (Graphics2D) graphics;
-        JTextComponent c = getComponent();
-
-        Container parent = c.getParent();
-        if (parent != null) {
-            g.setColor(parent.getBackground());
-            g.fillRect(0, 0, c.getWidth(), c.getHeight());
-        }
-
-        Border border = c.getBorder();
-        GraphicsContext config = new GraphicsContext(g);
-        if (border instanceof DarkTextBorder) {
-            if (c.isEnabled() && c.isEditable()) {
-                g.setColor(c.getBackground());
-            }
-            int width = c.getWidth();
-            int height = c.getHeight();
-            int w = borderSize;
-            PaintUtil.fillRoundRect(g, w, w, width - 2 * w, height - 2 * w, arc);
-        } else {
-            super.paintBackground(g);
-        }
-        config.restore();
-    }
-
     @Override
     protected boolean doPaintLeftIcon(final JTextComponent c) {
         return false;

core/src/main/java/com/github/weisj/darklaf/ui/text/DarkTextFieldUI.java

@@ -44,7 +44,6 @@ import com.github.weisj.darklaf.util.DarkUIUtil;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkTextFieldUI extends DarkTextFieldUIBridge implements PropertyChangeListener, MouseClickListener {

core/src/main/java/com/github/weisj/darklaf/ui/togglebutton/checkbox/DarkCheckBoxUI.java

@@ -33,7 +33,6 @@ import javax.swing.plaf.ComponentUI;
 import com.github.weisj.darklaf.ui.togglebutton.radiobutton.DarkRadioButtonUI;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkCheckBoxUI extends DarkRadioButtonUI {

core/src/main/java/com/github/weisj/darklaf/ui/togglebutton/radiobutton/DarkRadioButtonUI.java

@@ -48,7 +48,6 @@ import com.github.weisj.darklaf.ui.togglebutton.ToggleButtonFocusNavigationActio
 import com.github.weisj.darklaf.util.PropertyKey;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkRadioButtonUI extends MetalRadioButtonUI implements PropertyChangeListener, ToggleButtonConstants {

core/src/main/java/com/github/weisj/darklaf/ui/toolbar/DarkToolBarBorder.java

@@ -31,7 +31,6 @@ import javax.swing.border.AbstractBorder;
 import javax.swing.plaf.UIResource;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class DarkToolBarBorder extends AbstractBorder implements UIResource, SwingConstants {

core/src/main/resources/com/github/weisj/darklaf/properties/ui/button.properties

@@ -42,10 +42,10 @@ Button.activeFillColorRollOver     = %hoverHighlight
 Button.activeFillColorClick        = %clickHighlight
 
 Button.arc                         = %arc
-Button.squareArc                   = %arcSecondary
+Button.squareArc                   = 0
 Button.focusArc                    = %arcFocus
-Button.squareFocusArc              = %arcSecondaryFocus
-Button.minimumArc                  = %arcSecondary
+Button.squareFocusArc              = 0
+Button.minimumArc                  = 0
 Button.borderThickness             = %borderThickness
 Button.shadowHeight                = %shadowHeight
 

core/src/main/resources/com/github/weisj/darklaf/properties/ui/text.properties

@@ -104,9 +104,6 @@ PasswordField.selectionForeground                = %textCompSelectionForeground
 PasswordField.border                             = com.github.weisj.darklaf.ui.text.DarkTextBorder
 PasswordField.extendSelection                    = false
 
-PasswordField.arc                                = %arcSecondary
-PasswordField.borderThickness                    = %borderThickness
-
 #Icons
 PasswordField.show.icon                          = misc/eye.svg[themed]
 PasswordField.showPressed.icon                   = misc/eyeHovered.svg[themed]

windows/src/main/java/com/github/weisj/darklaf/platform/windows/ui/WindowsTitlePane.java

@@ -46,7 +46,6 @@ import com.github.weisj.darklaf.util.PropertyKey;
 import com.github.weisj.darklaf.util.Scale;
 
 /**
- * @author Konstantin Bulenkov
  * @author Jannis Weis
  */
 public class WindowsTitlePane extends CustomTitlePane {