// Copyright FreeHEP, 2003-2007
package org.freehep.graphics2d.font;
import com.google.code.appengine.awt.Font;
import com.google.code.appengine.awt.GraphicsEnvironment;
import com.google.code.appengine.awt.font.TextAttribute;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import java.util.Hashtable;
/**
*
* @author Mark Donszelmann
* @version $Id$
*/
public class FontUtilities {
private FontUtilities() {
}
public static List getAllAvailableFonts() {
return Arrays.asList(GraphicsEnvironment.getLocalGraphicsEnvironment()
.getAvailableFontFamilyNames());
}
private static final Properties windowsFonts = new Properties();
static {
// Looks like Unicode MS makes thinner characters
// List fontNames = getAllAvailableFonts();
// String arial = fontNames.contains("Arial Unicode MS") ? "Arial
// Unicode MS" : "Arial";
String arial = "Arial";
// logical fonts
windowsFonts.setProperty("Dialog", arial);
windowsFonts.setProperty("DialogInput", "Courier New");
windowsFonts.setProperty("Serif", "Times New Roman");
windowsFonts.setProperty("SansSerif", arial);
windowsFonts.setProperty("Monospaced", "Courier New");
// pdf fonts
windowsFonts.setProperty("Courier", "Courier New");
windowsFonts.setProperty("Helvetica", arial);
windowsFonts.setProperty("Times-Roman", "Times New Roman");
windowsFonts.setProperty("TimesRoman", "Times New Roman");
windowsFonts.setProperty("Times", "Times New Roman");
windowsFonts.setProperty("Symbol", "Arial Unicode MS");
windowsFonts.setProperty("ZapfDingbats", "Arial Unicode MS");
}
public static String getWindowsFontName(String fontName) {
return windowsFonts.getProperty(fontName, fontName);
}
/**
* @deprecated use
* org.freehep.graphics2d.font.FontEncoder.getEncodedString()
*/
public static String getEncodedString(String string, String tableName) {
return FontEncoder.getEncodedString(string, tableName);
}
/**
* Returns an unicode encoded string from an ascii encoded string, using the
* supplied table.
*
* @deprecated use
* org.freehep.graphics2d.font.FontEncoder.getEncodedString()
*/
public static String getEncodedString(String string, CharTable charTable) {
return FontEncoder.getEncodedString(string, charTable);
}
public interface ShowString {
public void showString(Font font, String string) throws IOException;
}
private static final CharTable STANDARD_CHAR_TABLES[] = { null };
private static final Font STANDARD_FONT[] = { null };
/**
* Shows a String and switches the encoding (and font) everytime the unicode
* characters leave the range of the curent encoding. Outside the range of
* the given latinTable, Symbol and ZapfDingbats are checked. If none of
* these three encodings contain the unicode character, an undefined
* character is used.
*/
public static void showString(Font font, String string,
CharTable latinTable, ShowString device) throws IOException {
if (latinTable == null) throw new RuntimeException("FontUtilities.showString(...): latinTable cannot be 'null'");
STANDARD_FONT[0] = font;
STANDARD_FONT[1] = new Font("Symbol", Font.PLAIN, font.getSize());
STANDARD_FONT[2] = new Font("ZapfDingbats", Font.PLAIN, font.getSize());
STANDARD_CHAR_TABLES[0] = latinTable;
char[] chars = string.toCharArray();
String out = "";
int lastTable = 0;
for (int i = 0; i < chars.length; i++) {
// find out suitable table and encoding of this character
// try last table first
int table = lastTable;
char encoding = (char) STANDARD_CHAR_TABLES[table]
.toEncoding(chars[i]);
// no success -> try all other tables
if (encoding == 0) {
table = -1;
do {
table++;
if (table != lastTable) { // we already checked that
encoding = (char) STANDARD_CHAR_TABLES[table]
.toEncoding(chars[i]);
}
} while ((encoding == 0)
&& (table < STANDARD_CHAR_TABLES.length - 1));
}
if (encoding == 0)
table = lastTable;
if ((table != lastTable) && (!out.equals(""))) {
// if font changes, write the old font and string so far
device.showString(STANDARD_FONT[lastTable], out);
out = "";
}
// append character to out
out += encoding;
lastTable = table;
}
device.showString(STANDARD_FONT[lastTable], out);
}
/**
* there is a bug in the jdk 1.6 which makes
* Font.getAttributes() not work correctly. The
* method does not return all values. What we dow here
* is using the old JDK 1.5 method.
*
* @param font font
* @return Attributes of font
*/
public static Hashtable getAttributes(Font font) {
Hashtable result = new Hashtable(7, (float)0.9);
result.put(
TextAttribute.TRANSFORM,
font.getTransform());
result.put(
TextAttribute.FAMILY,
font.getName());
result.put(
TextAttribute.SIZE,
new Float(font.getSize2D()));
result.put(
TextAttribute.WEIGHT,
(font.getStyle() & Font.BOLD) != 0 ?
TextAttribute.WEIGHT_BOLD :
TextAttribute.WEIGHT_REGULAR);
result.put(
TextAttribute.POSTURE,
(font.getStyle() & Font.ITALIC) != 0 ?
TextAttribute.POSTURE_OBLIQUE :
TextAttribute.POSTURE_REGULAR);
result.put(
TextAttribute.SUPERSCRIPT,
new Integer(0 /* no getter! */));
result.put(
TextAttribute.WIDTH,
new Float(1 /* no getter */));
return result;
}
}