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/*
* Copyright 2005-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.text.*;
/* @test
* @summary verify TextLine advance
* @bug 6582460
*/
/*
Sample correct output:
Left-to-right (One style): Advance = 127.30078, Visible advance = 118.30078
Right-to-left (One style): Advance = 127.30078, Visible advance = 118.30078
Left-to-right (Multiple styles): Advance = 127.30078, Visible advance = 118.30078
Right-to-left (Multiple styles): Advance = 127.30078, Visible advance = 118.30078
*/
public class VisibleAdvance
{
public static void main (String [] args)
{
System.out.println ("java.version = " + System.getProperty ("java.version"));
float advances[] = null;
advances = showAndCalculateAdvance ("Left-to-right (One style): ", getString (TextAttribute.RUN_DIRECTION_LTR, false), advances);
advances = showAndCalculateAdvance ("Right-to-left (One style): ", getString (TextAttribute.RUN_DIRECTION_RTL, false), advances);
advances = showAndCalculateAdvance ("Left-to-right (Multiple styles): ", getString (TextAttribute.RUN_DIRECTION_LTR, true), advances);
advances = showAndCalculateAdvance ("Right-to-left (Multiple styles): ", getString (TextAttribute.RUN_DIRECTION_RTL, true), advances);
}
private static final String textA = "Text with trailing ";
private static final String textB = "spaces";
private static final String textC = " ";
private static final String text = textA + textB + textC;
private static final int startOfTextB = textA.length ();
private static final int endOfTextB = startOfTextB + textB.length ();
private static final Font font = new Font ("Serif", Font.PLAIN, 12);
private static AttributedString getString (Boolean direction,
boolean multipleStyles)
{
AttributedString as = new AttributedString (text);
as.addAttribute (TextAttribute.FONT, font);
as.addAttribute (TextAttribute.RUN_DIRECTION, direction);
if (multipleStyles)
as.addAttribute (TextAttribute.FOREGROUND, Color.RED, startOfTextB, endOfTextB);
return as;
}
private static FontRenderContext fontRenderContext =
new FontRenderContext (new AffineTransform (), true, true);
/*
* @param advances on input, null or float[2]. On output: { advance, visibleAdvance }
* @param return new float array
*/
private static float[] showAndCalculateAdvance (String what,
AttributedString as,
float advances[])
{
TextLayout layout = new TextLayout (as.getIterator (), fontRenderContext);
System.out.println (what + "Advance = " + layout.getAdvance () +
", Visible advance = " + layout.getVisibleAdvance ());
float advance = layout.getAdvance();
float visAdvance = layout.getVisibleAdvance();
if(advances == null) {
advances = new float[2];
} else if( Float.compare(advances[0],advance)!=0 || Float.compare(advances[1],visAdvance)!=0) {
throw new RuntimeException("MISMATCH in advance.. " + what + "Advance = " + layout.getAdvance () +
", Visible advance = " + layout.getVisibleAdvance () + ", previous values were: ["+advances[0]+","+advances[1]+"]");
}
advances[0] = advance;
advances[1] = visAdvance;
return advances;
}
}
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