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104 lines
3.6 KiB
Java
104 lines
3.6 KiB
Java
/* Border.java --
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Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.border;
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import java.awt.Component;
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import java.awt.Graphics;
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import java.awt.Insets;
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/**
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* An public interface for decorative or spacing borders around a Component.
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*
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* <p>To reduce memory consumption, several Components may share a
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* single Border instance. {@link javax.swing.BorderFactory} is a
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* factory class for producing commonly used shared borders.
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*
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* @see javax.swing.BorderFactory
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* @see EmptyBorder
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* @see CompoundBorder
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* @see BevelBorder
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* @see EtchedBorder
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* @see LineBorder
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* @see MatteBorder
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* @see SoftBevelBorder
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* @see TitledBorder
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* @see AbstractBorder
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*
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* @author Ronald Veldema (rveldema@cs.vu.nl)
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* @author Michael Koch (konqueror@gmx.de)
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* @author Sascha Brawer (brawer@dandelis.ch)
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*/
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public interface Border
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{
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/**
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* Paints the border for a given component.
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*
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* @param c the component whose border is to be painted.
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* @param g the graphics for painting.
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* @param x the horizontal position for painting the border.
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* @param y the vertical position for painting the border.
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* @param width the width of the available area for painting the border.
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* @param height the height of the available area for painting the border.
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*/
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void paintBorder(Component c, Graphics g, int x, int y, int width,
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int height);
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/**
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* Measures the width of this border.
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*
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* @param c the component whose border is to be measured.
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*
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* @return an Insets object whose <code>left</code>, <code>right</code>,
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* <code>top</code> and <code>bottom</code> fields indicate the
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* width of the border at the respective edge.
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*/
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Insets getBorderInsets(Component c);
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/**
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* Determines whether this border fills every pixel in its area
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* when painting.
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*
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* @return <code>true</code> if the border is fully opaque, or
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* <code>false</code> if some pixels of the background
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* can shine through the border.
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*/
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boolean isBorderOpaque();
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}
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