Java Code Examples for java.awt.Canvas#getFontMetrics()

/**
 * Creates a new instance with the given content and adapts the
 * popupWitdth to the longest item in items using it's string value.
 *
 * @param items The values in the new combo box.
 */
public WideComboBox(final String[] items) {
  super(items);
  int tmpPopupWidth = 1;
  Canvas c = new Canvas();
  FontMetrics fontMetrics = c.getFontMetrics(this.getFont());
  for (String item : items) {
    tmpPopupWidth = Integer.max(fontMetrics.stringWidth(item), tmpPopupWidth);
  }
  tmpPopupWidth += 20;
  this.popupWidth = Optional.of(tmpPopupWidth);
}
 

@Override
public void doLayout() {
  try {
    layingOut = true;
    int tmpPopupWidth = 1;
    Canvas c = new Canvas();
    FontMetrics fontMetrics = c.getFontMetrics(this.getFont());
    for (int i = 0; i < super.getItemCount(); i++) {
      String item = super.getItemAt(i);
      tmpPopupWidth = Integer.max(fontMetrics.stringWidth(item), tmpPopupWidth);
    }
    tmpPopupWidth += 15;
    this.popupWidth = Optional.of(tmpPopupWidth);
    super.doLayout();
  }
  finally {
    layingOut = false;
  }
}
 

/**
 * function emulate the overflow hidden behavior on table cell
 * 
 * @param text
 *            String to check
 * @param style
 *            style of the text
 * @param fontFamily
 *            fond of the text
 * @param cellWidth
 *            the width of the container in points
 * @return String with truncated words that surpasses the cell width
 */
public String cropOverflowString( String text, IStyle style,
		String fontFamily, int cellWidth )
{// TODO: retrieve font type and replace plain with corresponding
	Font font = new Font( fontFamily, Font.PLAIN,
			WordUtil.parseFontSize( PropertyUtil.getDimensionValue( style
					.getProperty( StyleConstants.STYLE_FONT_SIZE ) ) ) );
	Canvas c = new Canvas( );
	FontMetrics fm = c.getFontMetrics( font );
	// conversion from point to advancement point from sample linear
	// regression:
	int cellWidthInPointAdv = ( cellWidth * (int) WordUtil.PT_TWIPS - 27 )
			/ 11;
	StringBuilder sb = new StringBuilder( text.length( ) + 1 );
	int wordEnd = INDEX_NOTFOUND;
	do
	{
		wordEnd = text.indexOf( SPACE );
		if ( wordEnd != INDEX_NOTFOUND ) // space found
		{
			String word = text.substring( 0, wordEnd );
			word = cropOverflowWord( word, fm, cellWidthInPointAdv );
			sb.append( word );
			sb.append( SPACE );
			text = text.substring( wordEnd + 1 );
		}
	} while ( wordEnd != INDEX_NOTFOUND && !EMPTY_STRING.equals( text ) );
	sb.append( cropOverflowWord( text, fm, cellWidthInPointAdv ) );
	return sb.toString( );
}
 

public int measureText( String text )
    throws FontFormatException, IOException
{
    URL fontURL =
        new URL( Jenkins.getInstance().pluginManager.getPlugin( "status-badges" ).baseResourceURL,
                 "fonts/verdana.ttf" );
    InputStream fontStream = fontURL.openStream();
    Font defaultFont = Font.createFont( Font.TRUETYPE_FONT, fontStream );
    defaultFont = defaultFont.deriveFont( 11f );
    Canvas canvas = new Canvas();
    FontMetrics fontMetrics = canvas.getFontMetrics( defaultFont );
    return fontMetrics.stringWidth( text );
}
 

public HTNDomainVisualizer() {
    font = new Font("Arial", Font.PLAIN, 10);
    Canvas c = new Canvas();
    fm = c.getFontMetrics(font);
}
 

public HTNDomainVisualizerVertical() {
    font = new Font("Arial", Font.PLAIN, 16);
    Canvas c = new Canvas();
    fm = c.getFontMetrics(font);
}