8307208: Add GridPane constructor that accepts hGap and vGap values

Reviewed-by: angorya, nlisker, jhendrikx, kcr

modules/javafx.graphics/src/main/java/javafx/scene/layout/GridPane.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -734,6 +734,20 @@ public GridPane() {
         getChildren().addListener((Observable o) -> requestLayout());
     }
 
+    /**
+     * Creates a {@code GridPane} layout with the given {@link #hgapProperty() hgap} and {@link #vgapProperty() vgap}.
+     *
+     * @param hgap the size of the horizontal gaps between columns
+     * @param vgap the size of the vertical gaps between rows
+     *
+     * @since 21
+     */
+    public GridPane(double hgap, double vgap) {
+        this();
+        setHgap(hgap);
+        setVgap(vgap);
+    }
+
     /**
      * The width of the horizontal gaps between columns.
      * @return the width of the horizontal gaps between columns

modules/javafx.graphics/src/test/java/test/javafx/scene/layout/GridPaneTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -3158,4 +3158,15 @@ public void testAllRowsFixedButNotUpTo100() {
 
         assertEquals(160, gridpane.prefHeight(-1), 1e-100);
     }
+
+    @Test
+    public void testGridPaneHgapVgapConstructor() {
+        assertEquals(0, gridpane.getHgap(), 0);
+        assertEquals(0, gridpane.getVgap(), 0);
+
+        gridpane = new GridPane(3, 8);
+
+        assertEquals(3, gridpane.getHgap(), 0);
+        assertEquals(8, gridpane.getVgap(), 0);
+    }
 }