package bmsi.tui;
import java.awt.*;

/** Lobotomized FontMetrics for TUI displays.
 * TUI supports multiple fonts, but all are the same size.  It is often
 * possible to support simple size variations.  For instance, a double high
 * font could be implemented with 2 font banks - top part and bottom part.
 * Some TUI hardware can set specific lines to double high or double wide.
 * This does not fit into the window model and could only be used in a
 * device specific manner.  Typical TUI displays have from 2 - 4 128 char
 * font banks.  The Link terminals used by BMS have 4 banks.  EGA/VGA text
 * mode on PC's also has 4 banks.  Software text mode emulation under Windows
 * or OS/2, however, has only 2 banks which are hardwired to the IBMPC
 * charset.
 */

public class TUIFontMetrics extends FontMetrics {
  private final Dimension scale;
  public TUIFontMetrics(Font font,Dimension scale) {
    super(font);
    this.scale = scale;
  }
  public int getLeading() { return 0; }
  public int getAscent() { return scale.height; }
  public int getDescent() { return 0; }
  public int getMaxAscent() { return scale.height; }
  public int getMaxDescent() { return 0; }
  public int getMaxAdvance() { return scale.width; }
  public int charWidth(int ch) { return scale.width; }
  public int charWidth(char ch) { return scale.width; }
  public int stringWidth(String s) { return s.length() * scale.width; }
  public int charsWidth(char [] data,int pos,int len) {
    return len * scale.width;
  }
  public int bytesWidth(byte [] data,int pos,int len) {
    return len * scale.width;
  }
}