Getting the Checkmark file name can now be overridden by the

SWING_UI paramater.

src/dorkbox/systemTray/swingUI/SwingMenuItemCheckbox.java

@@ -60,8 +60,14 @@ class SwingMenuItemCheckbox extends SwingMenuItem implements CheckboxPeer {
                 int sizePadding = (menuImageSize - size) / 2;
 
 
-                checkedIcon = new ImageIcon(HeavyCheckMark.get(jMenuItem.getForeground(), size,
+                String checkmarkPath;
-                                                               0, sizePadding, 0, sizePadding));
+                if (SystemTray.SWING_UI != null) {
+                    checkmarkPath = SystemTray.SWING_UI.getCheckMarkIcon(jMenuItem.getForeground(), size, 0, sizePadding, 0, sizePadding);
+                } else {
+                    checkmarkPath = HeavyCheckMark.get(jMenuItem.getForeground(), size, 0, sizePadding, 0, sizePadding);
+                }
+
+                checkedIcon = new ImageIcon(checkmarkPath);
             } catch(Exception e) {
                 SystemTray.logger.error("Error creating check-mark image.", e);
             }

src/dorkbox/systemTray/swingUI/SwingUIFactory.java

@@ -15,6 +15,8 @@
  */
 package dorkbox.systemTray.swingUI;
 
+import java.awt.Color;
+
 import javax.swing.JMenuItem;
 import javax.swing.JPopupMenu;
 import javax.swing.JSeparator;
@@ -67,4 +69,20 @@ interface SwingUIFactory {
      * @return the UI used to customize the Look & Feel of a menu separator entry
      */
     SeparatorUI getSeparatorUI(JSeparator jSeparator);
+
+    /**
+     * Get the path to a CheckMark image for a specified color, size, and padding.
+     * <p>
+     * This is necessary because Swing does not have correct spacing when rendering CheckMark menu items next to
+     * normal menu menu items (with, or without, images attached).
+     *
+     * @param color the color of the CheckMark
+     * @param checkMarkSize the size of the CheckMark inside the image. (does not include padding)
+     *
+     * @param paddingTop amount of padding to apply to the top edge of the icon.
+     * @param paddingLeft amount of padding to apply to the left edge of the icon.
+     * @param paddingBottom amount of padding to apply to the bottom edge of the icon.
+     * @param paddingRight amount of padding to apply to the right edge of the icon.
+     */
+    String getCheckMarkIcon(Color color, int checkMarkSize, int paddingTop, int paddingLeft , int paddingBottom, int paddingRight);
 }

src/dorkbox/systemTray/util/HeavyCheckMark.java

@@ -21,7 +21,7 @@ public class HeavyCheckMark {
     private static final int VERSION = 1;
 
     /**
-     * This saves a scalable CheckMark to a correctly sized PNG file.
+     * This saves a vector CheckMark to a correctly sized PNG file.
      *
      * @param color the color of the CheckMark
      * @param checkMarkSize the size of the CheckMark inside the image. (does not include padding)