Initial commit from SVN.

Foundation SWT/src/com/foundation/view/swt/layout/CenterLayout.java

@@ -0,0 +1,83 @@
+package com.foundation.view.swt.layout;
+
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+/**
+ * A very simple layout that centers the first child within the parent.
+ * All other children are not visible.
+ * There is no data attached to the children that is used by this layout.
+ */
+public class CenterLayout extends Layout {
+	private Point size = new Point(0, 0);
+	private Point firstChildSize = new Point(0, 0);
+/**
+ * CenterLayout constructor.
+ */
+public CenterLayout() {
+}//CenterLayout()//
+/* (non-Javadoc)
+ * @see org.eclipse.swt.widgets.Layout#computeSize(org.eclipse.swt.widgets.Composite, int, int, boolean)
+ */
+protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
+	if(flushCache) {
+		Control[] children = composite.getChildren();
+		
+		size.x = 0;
+		size.y = 0;
+		firstChildSize.x = 0;
+		firstChildSize.y = 0;
+		
+		if(children != null) {
+			for(int index = 0; index < children.length; index++) {
+				Point childSize = children[index].computeSize(wHint, hHint, flushCache);
+		
+				size.x = Math.max(childSize.x, size.x);
+				size.y = Math.max(childSize.y, size.y);
+				
+				if(index == 0) {
+					firstChildSize.x = childSize.x;
+					firstChildSize.y = childSize.y;
+				}//if//
+			}//for//
+		}//if//
+	}//if//
+	
+	return new Point(size.x, size.y);
+}//computeSize()//
+/* (non-Javadoc)
+ * @see org.eclipse.swt.widgets.Layout#layout(org.eclipse.swt.widgets.Composite, boolean)
+ */
+protected void layout(Composite composite, boolean flushCache) {
+	Rectangle space = composite.getClientArea();
+	Control[] children = composite.getChildren();
+	
+	if(flushCache || firstChildSize.x == 0 || firstChildSize.y == 0) {
+		if(children != null && children.length > 0) {
+			Point childSize = children[0].computeSize(-1, -1, true);
+
+			firstChildSize.x = childSize.x;
+			firstChildSize.y = childSize.y;
+		}//if//
+		else {
+			firstChildSize.x = 0;
+			firstChildSize.y = 0;
+		}//else//
+	}//if//
+
+	if(children != null) {
+		for(int index = 0; index < children.length; index++) {
+			if(index == 0) {
+				children[index].setSize(firstChildSize);
+				children[index].setLocation(space.x + ((space.width - firstChildSize.x) >> 1), space.y + ((space.height - firstChildSize.y) >> 1));
+			}//if//
+			else {
+				children[index].setSize(0, 0);
+				children[index].setLocation(0, 0);
+			}//else//
+		}//for//
+	}//if//
+}//layout()//
+}//CenterLayout//