Java 类org.eclipse.swt.custom.PaintObjectListener 实例源码

/**
 * Convenience method
 * 
 * @param inWidget
 *            {@link StyledText}
 * @return {@link PaintObjectListener}
 */
public static PaintObjectListener getPaintObjectListener(
        final StyledText inWidget) {
    return new PaintObjectListener() {
        @Override
        public void paintObject(final PaintObjectEvent inEvent) {
            final Display lDisplay = inEvent.display;
            final StyleRange lStyle = inEvent.style;
            final int lPosition = inEvent.x + lStyle.metrics.width
                    - BULLET_WIDTH + 2;
            Font lFont = lStyle.font;
            if (lFont == null)
                lFont = inWidget.getFont();
            final TextLayout lLayout = new TextLayout(lDisplay);
            lLayout.setAscent(inEvent.ascent);
            lLayout.setDescent(inEvent.descent);
            lLayout.setFont(lFont);
            lLayout.setText(String.format("%s.", inEvent.bulletIndex + 1)); //$NON-NLS-1$
            lLayout.draw(inEvent.gc, lPosition, inEvent.y);
            lLayout.dispose();
        }
    };
}