/[classpath]/classpath/javax/swing/border/AbstractBorder.java
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revision 1.7.2.1 by gnu_andrew, Tue Aug 2 20:12:37 2005 UTC revision 1.7.2.2 by gnu_andrew, Wed Nov 2 00:43:49 2005 UTC
# Line 52  import java.io.Serializable; Line 52  import java.io.Serializable;
52   * @author Sascha Brawer (brawer@dandelis.ch)   * @author Sascha Brawer (brawer@dandelis.ch)
53   * @author Ronald Veldema (rveldema@cs.vu.nl)   * @author Ronald Veldema (rveldema@cs.vu.nl)
54   */   */
55  public abstract class AbstractBorder  public abstract class AbstractBorder implements Border, Serializable
   implements Border, Serializable  
56  {  {
57    static final long serialVersionUID = -545885975315191844L;    static final long serialVersionUID = -545885975315191844L;
58    
   
59    /**    /**
60     * Constructs a new AbstractBorder.     * Constructs a new AbstractBorder.
61     */     */
62    public AbstractBorder ()    public AbstractBorder()
63    {    {
64        // Nothing to do here.
65    }    }
66    
   
67    /**    /**
68     * Performs nothing, because the default implementation provided by     * Performs nothing, because the default implementation provided by
69     * this class is an invisible, zero-width border. Subclasses will     * this class is an invisible, zero-width border. Subclasses will
# Line 79  public abstract class AbstractBorder Line 77  public abstract class AbstractBorder
77     * @param width the width of the available area for painting the border.     * @param width the width of the available area for painting the border.
78     * @param height the height of the available area for painting the border.     * @param height the height of the available area for painting the border.
79     */     */
80    public void paintBorder (Component c, Graphics g,    public void paintBorder(Component c, Graphics g, int x, int y, int width,
81                             int x, int y, int width, int height)                            int height)
82    {    {
83      /* A previous version of Classpath had emitted a warning when      // A previous version of Classpath had emitted a warning when
84       * this method was called. The warning was removed because it is      // this method was called. The warning was removed because it is
85       * perfectly legal for a subclass to not override the paintBorder      // perfectly legal for a subclass to not override the paintBorder
86       * method. An example would be EmptyBorder.      // method. An example would be EmptyBorder.
      */  
87    }    }
88    
   
89    /**    /**
90     * Measures the width of this border.     * Measures the width of this border.
91     *     *
# Line 102  public abstract class AbstractBorder Line 98  public abstract class AbstractBorder
98     *     *
99     * @see #getBorderInsets(java.awt.Component, java.awt.Insets)     * @see #getBorderInsets(java.awt.Component, java.awt.Insets)
100     */     */
101    public Insets getBorderInsets (Component c)    public Insets getBorderInsets(Component c)
102    {    {
103      return new Insets (0, 0, 0, 0);      return new Insets(0, 0, 0, 0);
104    }    }
105    
   
106    /**    /**
107     * Determines the insets of this border. The implementation provided     * Determines the insets of this border. The implementation provided
108     * by AbstractButton sets the <code>left</code>, <code>right</code>,     * by AbstractButton sets the <code>left</code>, <code>right</code>,
109     * <code>top</code> and <code>bottom</code> fields of the passed     * <code>top</code> and <code>bottom</code> fields of the passed
110     * <code>insets</code> parameter to zero.     * <code>insets</code> parameter to zero.
111     *     *
112     * @param c the component whose border is to be measured.     * @param c the component whose border is to be measured
113     *     *
114     * @return the same object that was passed for <code>insets</code>.     * @return the same object that was passed for <code>insets</code>
115     *     *
116     * @see #getBorderInsets(Component)     * @see #getBorderInsets(Component)
117     */     */
118    public Insets getBorderInsets (Component c, Insets insets)    public Insets getBorderInsets(Component c, Insets insets)
119    {    {
120      insets.left = insets.right = insets.top = insets.bottom = 0;      insets.left = insets.right = insets.top = insets.bottom = 0;
121      return insets;      return insets;
122    }    }
123    
   
124    /**    /**
125     * Determines whether or not this border is opaque. An opaque border     * Determines whether or not this border is opaque. An opaque border
126     * fills every pixel in its area when painting. Partially     * fills every pixel in its area when painting. Partially
# Line 136  public abstract class AbstractBorder Line 130  public abstract class AbstractBorder
130     *     *
131     * @return <code>false</code>.     * @return <code>false</code>.
132     */     */
133    public boolean isBorderOpaque ()    public boolean isBorderOpaque()
134    {    {
135      return false;      return false;
136    }    }
137    
   
138    /**    /**
139     * Returns a rectangle that covers the specified area minus this     * Returns a rectangle that covers the specified area minus this
140     * border.  Components that wish to determine an area into which     * border.  Components that wish to determine an area into which
# Line 154  public abstract class AbstractBorder Line 147  public abstract class AbstractBorder
147     * @param width the width of the available area for the border.     * @param width the width of the available area for the border.
148     * @param height the height of the available area for the border.     * @param height the height of the available area for the border.
149     */     */
150    public Rectangle getInteriorRectangle (Component c,    public Rectangle getInteriorRectangle(Component c, int x, int y, int width,
151                                           int x, int y, int width, int height)                                          int height)
152    {    {
153      return getInteriorRectangle (c, this, x, y, width, height);      return getInteriorRectangle (c, this, x, y, width, height);
154    }    }
   
155        
156    /**    /**
157     * Returns a rectangle that covers the specified area minus a     * Returns a rectangle that covers the specified area minus a
# Line 173  public abstract class AbstractBorder Line 165  public abstract class AbstractBorder
165     * @param width the width of the available area for the border.     * @param width the width of the available area for the border.
166     * @param height the height of the available area for the border.     * @param height the height of the available area for the border.
167     */     */
168    public static Rectangle getInteriorRectangle (Component c, Border b,    public static Rectangle getInteriorRectangle(Component c, Border b, int x,
169                                                  int x, int y, int width, int height)                                                 int y, int width, int height)
170    {    {
171      Insets borderInsets;      Insets borderInsets;
172    

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