jdk/test/java/awt/GridLayout/LayoutExtraGaps/LayoutExtraGaps.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2006, 2016, 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 /*
    @test
   @key headful
    @bug 4370316
    @summary GridLayout does not centre its component properly
     (summary was GridLayout does not fill its Container)
    @library ../../regtesthelpers
    @build Util
    @author Andrei Dmitriev : area=awt.layout
    @run main LayoutExtraGaps
 */

 import java.awt.*;
 import java.awt.event.*;
 import test.java.awt.regtesthelpers.Util;

 public class LayoutExtraGaps extends Frame {
     final static int compCount = 30;

     public LayoutExtraGaps() {
         super("GridLayoutTest");
         Panel yellowPanel = new Panel(new GridLayout(compCount, 1, 3, 3));
         yellowPanel.setBackground(Color.yellow);

         for(int i = 0; i < compCount ; i++) {
             Label redLabel = new Label(""+i);
             redLabel.setBackground(Color.red);
             yellowPanel.add(redLabel);
         }

         Panel bluePanel = new Panel(new GridLayout(1, compCount, 3, 3));
         bluePanel.setBackground(Color.blue);

         for(int i = 0; i < compCount; i++) {
             Label greenLabel = new Label(""+i);
             greenLabel.setBackground(Color.green);
             bluePanel.add(greenLabel);
         }

         //RTL orientation
         Panel blackPanel = new Panel(new GridLayout(compCount, 1, 3, 3));
         blackPanel.setBackground(Color.black);
         blackPanel.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

         for(int i = 0; i < compCount ; i++) {
             Label redLabel = new Label(""+i);
             redLabel.setBackground(Color.red);
             blackPanel.add(redLabel);
         }

         Panel redPanel = new Panel(new GridLayout(1, compCount, 3, 3));
         redPanel.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
         redPanel.setBackground(Color.red);

         for(int i = 0; i < compCount; i++) {
             Label greenLabel = new Label(""+i);
             greenLabel.setBackground(Color.green);
             redPanel.add(greenLabel);
         }

         setLayout(new GridLayout(2, 2, 20, 20));

         add(yellowPanel);
         add(bluePanel);
         add(redPanel);
         add(blackPanel);
         pack();
         setSize((int)getPreferredSize().getWidth() + 50, (int)getPreferredSize().getHeight() + 50);
         setVisible(true);

         Util.waitForIdle(Util.createRobot());

         if (isComponentCentredLTR(yellowPanel) && isComponentCentredLTR(bluePanel)
                 && isComponentCentredLTR(blackPanel) && isComponentCentredRTL(redPanel))
         {
             System.out.println("Test passed.");
         } else {
             throw new RuntimeException("Test failed. GridLayout doesn't center component.");
         }
     }

     /**
      * Checks if the components under Panel p are properly centred (i.e.
      * opposite borders between the Panel and component are equal). Panel p
      * must not be affect by RTL orientation (RTL only affects horizontal
      * positioning and components lay out from top right corner).
      *
      * @param      p the panel where the components exist and is not affected
      *             by right to left orientation
      * @return     true if components of panel p are properly centre, false
      *             otherwise
      */
     public static boolean isComponentCentredLTR(Panel p) {
         double borderLeft;
         double borderRight;
         double borderTop;
         double borderBottom;

         //The first component(rectangle) in panel p.
         Rectangle firstRec = p.getComponent(0).getBounds();

         //The last component(rectangle) in panel p.
         Rectangle lastRec = p.getComponent(compCount - 1).getBounds();

         System.out.println("bounds of the first rectangle in "+ p.getName() + " = " + firstRec);
         System.out.println("bounds of the last rectangle in "+ p.getName() + " = " + lastRec);

         borderLeft = firstRec.getX();
         borderRight = p.getWidth() - lastRec.getWidth() - lastRec.getX();
         borderTop = firstRec.getY();
         borderBottom = p.getHeight() - lastRec.getHeight() - lastRec.getY();

         return areBordersEqual(borderLeft, borderRight) &&
                 areBordersEqual(borderTop, borderBottom);
     }

     /**
      * Checks if the components under Panel p are properly centred (i.e.
      * opposite borders between the Panel and component are equal). Panel p
      * must be affect by RTL orientation (RTL only affects horizontal positioning
      * and components lay out from top right corner).
      *
      * @param      p the panel where the components exist and is affected by
      *             right to left orientation
      * @return     true if components of panel p are properly centre, false
      *             otherwise
      */
     public static boolean isComponentCentredRTL(Panel p) {
         double borderLeft;
         double borderRight;
         double borderTop;
         double borderBottom;

         //The first component(rectangle) in panel p.
         Rectangle firstRec = p.getComponent(0).getBounds();

         //The last component(rectangle) in panel p.
         Rectangle lastRec = p.getComponent(compCount - 1).getBounds();

         System.out.println("bounds of the first rectangle in "+ p.getName() + " = " + firstRec);
         System.out.println("bounds of the last rectangle in "+ p.getName() + " = " + lastRec);

         borderLeft = lastRec.getX();
         borderRight = p.getWidth() - firstRec.getWidth() - firstRec.getX();
         borderTop = lastRec.getY();
         borderBottom = p.getHeight() - firstRec.getHeight() - firstRec.getY();

         return areBordersEqual(borderLeft, borderRight) &&
                 areBordersEqual(borderTop, borderBottom);
     }

     /**
      * Given two borders border1 and border2 check if they are equal.
      *
      * @param      border1 one of the borders being compared
      * @param      border2 the other border being compared
      * @return     true if border1 and border2 are equal to each other (i.e.
      *             their width/height difference is at most 1, assuming the
      *             smallest pixel is of size 1), false otherwise
      */
     public static boolean areBordersEqual(double border1, double border2) {
         return Math.abs(border1 - border2) <= 1;
     }

     public static void main(String[] args) {
         new LayoutExtraGaps();
     }
 }
	/*
	* Copyright (c) 2006, 2016, 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
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	/*
	@test
	@key headful
	@bug 4370316
	@summary GridLayout does not centre its component properly
	(summary was GridLayout does not fill its Container)
	@library ../../regtesthelpers
	@build Util
	@author Andrei Dmitriev : area=awt.layout
	@run main LayoutExtraGaps
	*/

	import java.awt.*;
	import java.awt.event.*;
	import test.java.awt.regtesthelpers.Util;

	public class LayoutExtraGaps extends Frame {
	final static int compCount = 30;

	public LayoutExtraGaps() {
	super("GridLayoutTest");
	Panel yellowPanel = new Panel(new GridLayout(compCount, 1, 3, 3));
	yellowPanel.setBackground(Color.yellow);

	for(int i = 0; i < compCount ; i++) {
	Label redLabel = new Label(""+i);
	redLabel.setBackground(Color.red);
	yellowPanel.add(redLabel);
	}

	Panel bluePanel = new Panel(new GridLayout(1, compCount, 3, 3));
	bluePanel.setBackground(Color.blue);

	for(int i = 0; i < compCount; i++) {
	Label greenLabel = new Label(""+i);
	greenLabel.setBackground(Color.green);
	bluePanel.add(greenLabel);
	}

	//RTL orientation
	Panel blackPanel = new Panel(new GridLayout(compCount, 1, 3, 3));
	blackPanel.setBackground(Color.black);
	blackPanel.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

	for(int i = 0; i < compCount ; i++) {
	Label redLabel = new Label(""+i);
	redLabel.setBackground(Color.red);
	blackPanel.add(redLabel);
	}

	Panel redPanel = new Panel(new GridLayout(1, compCount, 3, 3));
	redPanel.applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
	redPanel.setBackground(Color.red);

	for(int i = 0; i < compCount; i++) {
	Label greenLabel = new Label(""+i);
	greenLabel.setBackground(Color.green);
	redPanel.add(greenLabel);
	}

	setLayout(new GridLayout(2, 2, 20, 20));

	add(yellowPanel);
	add(bluePanel);
	add(redPanel);
	add(blackPanel);
	pack();
	setSize((int)getPreferredSize().getWidth() + 50, (int)getPreferredSize().getHeight() + 50);
	setVisible(true);

	Util.waitForIdle(Util.createRobot());

	if (isComponentCentredLTR(yellowPanel) && isComponentCentredLTR(bluePanel)
	&& isComponentCentredLTR(blackPanel) && isComponentCentredRTL(redPanel))
	{
	System.out.println("Test passed.");
	} else {
	throw new RuntimeException("Test failed. GridLayout doesn't center component.");
	}
	}

	/**
	* Checks if the components under Panel p are properly centred (i.e.
	* opposite borders between the Panel and component are equal). Panel p
	* must not be affect by RTL orientation (RTL only affects horizontal
	* positioning and components lay out from top right corner).
	*
	* @param p the panel where the components exist and is not affected
	* by right to left orientation
	* @return true if components of panel p are properly centre, false
	* otherwise
	*/
	public static boolean isComponentCentredLTR(Panel p) {
	double borderLeft;
	double borderRight;
	double borderTop;
	double borderBottom;

	//The first component(rectangle) in panel p.
	Rectangle firstRec = p.getComponent(0).getBounds();

	//The last component(rectangle) in panel p.
	Rectangle lastRec = p.getComponent(compCount - 1).getBounds();

	System.out.println("bounds of the first rectangle in "+ p.getName() + " = " + firstRec);
	System.out.println("bounds of the last rectangle in "+ p.getName() + " = " + lastRec);

	borderLeft = firstRec.getX();
	borderRight = p.getWidth() - lastRec.getWidth() - lastRec.getX();
	borderTop = firstRec.getY();
	borderBottom = p.getHeight() - lastRec.getHeight() - lastRec.getY();

	return areBordersEqual(borderLeft, borderRight) &&
	areBordersEqual(borderTop, borderBottom);
	}

	/**
	* Checks if the components under Panel p are properly centred (i.e.
	* opposite borders between the Panel and component are equal). Panel p
	* must be affect by RTL orientation (RTL only affects horizontal positioning
	* and components lay out from top right corner).
	*
	* @param p the panel where the components exist and is affected by
	* right to left orientation
	* @return true if components of panel p are properly centre, false
	* otherwise
	*/
	public static boolean isComponentCentredRTL(Panel p) {
	double borderLeft;
	double borderRight;
	double borderTop;
	double borderBottom;

	//The first component(rectangle) in panel p.
	Rectangle firstRec = p.getComponent(0).getBounds();

	//The last component(rectangle) in panel p.
	Rectangle lastRec = p.getComponent(compCount - 1).getBounds();

	System.out.println("bounds of the first rectangle in "+ p.getName() + " = " + firstRec);
	System.out.println("bounds of the last rectangle in "+ p.getName() + " = " + lastRec);

	borderLeft = lastRec.getX();
	borderRight = p.getWidth() - firstRec.getWidth() - firstRec.getX();
	borderTop = lastRec.getY();
	borderBottom = p.getHeight() - firstRec.getHeight() - firstRec.getY();

	return areBordersEqual(borderLeft, borderRight) &&
	areBordersEqual(borderTop, borderBottom);
	}

	/**
	* Given two borders border1 and border2 check if they are equal.
	*
	* @param border1 one of the borders being compared
	* @param border2 the other border being compared
	* @return true if border1 and border2 are equal to each other (i.e.
	* their width/height difference is at most 1, assuming the
	* smallest pixel is of size 1), false otherwise
	*/
	public static boolean areBordersEqual(double border1, double border2) {
	return Math.abs(border1 - border2) <= 1;
	}

	public static void main(String[] args) {
	new LayoutExtraGaps();
	}
	}