ttfhorizontalheadertable.java

来自「纯java操作系统jnode,安装简单和操作简单的个人使用的Java操作系统」· Java 代码 · 共 137 行

package org.jnode.awt.font.truetype;

import java.io.IOException;

/**
 * HHEA Table.
 *
 *  @author Simon Fischer
 *  @version $Id: TTFHorizontalHeaderTable.java,v 1.1 2003/11/25 11:51:38 epr Exp $
 */
public class TTFHorizontalHeaderTable extends TTFVersionTable {

	private int ascender;
	private int descender;
	private int lineGap;
	private int advanceWidthMax;
	private int minLeftSideBearing;
	private int minRightSideBearing;
	private int xMaxExtent;
	private int caretSlopeRise;
	private int caretSlopeRun;
	private int metricDataFormat;
	private int numberOfHMetrics;

	public String getTag() {
		return "hhea";
	}

	public void readTable() throws IOException {
		readVersion();

		ascender = ttf.readFWord();
		descender = ttf.readFWord();
		lineGap = ttf.readFWord();

		advanceWidthMax = ttf.readUFWord();
		minLeftSideBearing = ttf.readFWord();
		minRightSideBearing = ttf.readFWord();
		xMaxExtent = ttf.readFWord();

		caretSlopeRise = ttf.readShort();
		caretSlopeRun = ttf.readShort();

		for (int i = 0; i < 5; i++) {
			ttf.checkShortZero();
		}

		metricDataFormat = ttf.readShort();
		numberOfHMetrics = ttf.readUShort();
	}

	public String toString() {
		String str = super.toString();
		str += "\n  asc:" + ascender + " desc:" + descender + " lineGap:" + lineGap + " maxAdvance:" + advanceWidthMax;
		str += "\n  metricDataFormat:" + metricDataFormat + " #HMetrics:" + numberOfHMetrics;
		return str;
	}
	
	/**
	 * @return The maximum advance
	 */
	public int getMaxAdvance() {
		return this.advanceWidthMax;
	}

	/**
	 * @return The ascent
	 */
	public int getAscent() {
		return this.ascender;
	}

	/**
	 * @return The descent
	 */
	public int getDescent() {
		return this.descender;
	}

	/**
	 * @return The line gap
	 */
	public int getLineGap() {
		return this.lineGap;
	}

	/**
	 * @return The X max extent
	 */
	public int getXMaxExtent() {
		return this.xMaxExtent;
	}

	/**
	 * @return The caret slope rise
	 */
	public int getCaretSlopeRise() {
		return this.caretSlopeRise;
	}

	/**
	 * @return The caret slope run
	 */
	public int getCaretSlopeRun() {
		return this.caretSlopeRun;
	}

	/**
	 * @return The metric data format
	 */
	public int getMetricDataFormat() {
		return this.metricDataFormat;
	}

	/**
	 * @return The minimum left side bearing
	 */
	public int getMinLeftSideBearing() {
		return this.minLeftSideBearing;
	}

	/**
	 * @return The minimum right side bearing
	 */
	public int getMinRightSideBearing() {
		return this.minRightSideBearing;
	}

	/**
	 * @return The number of h-metrics
	 */
	public int getNumberOfHMetrics() {
		return this.numberOfHMetrics;
	}

}