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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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,
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 *
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/*
 *
 * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved
 */

package sun.font;

import java.awt.Font;
import java.awt.font.FontRenderContext;
import java.awt.font.LineMetrics;

A text source represents text for rendering, plus context information.
All text in the source uses the same font, metrics, and render context,
and is at the same bidi level.
/**
 * A text source represents text for rendering, plus context information.
 * All text in the source uses the same font, metrics, and render context,
 * and is at the same bidi level.
 */

public abstract class TextSource {
  
Source character data. /** Source character data. */
  public abstract char[] getChars();

  
Start of source data in char array returned from getChars. /** Start of source data in char array returned from getChars. */
  public abstract int getStart();

  
Length of source data. /** Length of source data. */
  public abstract int getLength();

  
Start of context data in char array returned from getChars. /** Start of context data in char array returned from getChars. */
  public abstract int getContextStart();

  
Length of context data. /** Length of context data. */
  public abstract int getContextLength();

  
Return the layout flags /** Return the layout flags */
  public abstract int getLayoutFlags();

  
Bidi level of all the characters in context. /** Bidi level of all the characters in context. */
  public abstract int getBidiLevel();

  
Font for source data. /** Font for source data. */
  public abstract Font getFont();

  
Font render context to use when measuring or rendering source data. /** Font render context to use when measuring or rendering source data. */
  public abstract FontRenderContext getFRC();

  
Line metrics for source data. /** Line metrics for source data. */
  public abstract CoreMetrics getCoreMetrics();

  
Get subrange of this TextSource. dir is one of the TextLineComponent constants /** Get subrange of this TextSource. dir is one of the TextLineComponent constants */
  public abstract TextSource getSubSource(int start, int length, int dir);

  
Constant for toString(boolean).  Indicates that toString should not return info
outside of the context of this instance. /** Constant for toString(boolean).  Indicates that toString should not return info
      outside of the context of this instance. */
  public static final boolean WITHOUT_CONTEXT = false;

  
Constant for toString(boolean).  Indicates that toString should return info
outside of the context of this instance. /** Constant for toString(boolean).  Indicates that toString should return info
      outside of the context of this instance. */
  public static final boolean WITH_CONTEXT = true;

  
Get debugging info about this TextSource instance. Default implementation just
returns toString.  Subclasses should implement this to match the semantics of
the toString constants. /** Get debugging info about this TextSource instance. Default implementation just
      returns toString.  Subclasses should implement this to match the semantics of
      the toString constants. */
  public abstract String toString(boolean withContext);
}