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package ij.util;
import java.text.*;
import java.awt.*;
/** This class contains static utility methods for replacing fonts that are not available on the
* current system.
*/
public class FontUtil {
/** Returns a font with the given family name or, if not available, a similar font, e.g. Helvetica replaced by Arial */
public static Font getFont(String fontFamilyName, int style, float size) {
Font font = new Font(fontFamilyName, style, (int)size);
if (!font.getFamily().startsWith(fontFamilyName)) {
String[] similarFonts = getSimilarFontsList(fontFamilyName);
font = getFont(similarFonts, style, (int)size);
}
if (size != (int)size)
font = font.deriveFont(size);
return font;
}
/** Returns the font for first element of the 'fontNames' array, where a Font Family Name starts with this name.
* E.g. if fontNames = {"Times New Roman", "Serif" and the system has no "Times New Roman", but finds "Serif",
* it would return a "Serif" font with suitable style and size */
private static Font getFont(String[] fontNames, int style, int size) {
int iSize = (int)size;
Font font = null;
for (String fontName : fontNames) {
font = new Font(fontName, style, iSize);
if (font.getFamily().startsWith(fontName))
break;
}
return font;
}
/** For a few basic font types, gets a list of replacement font families
* Note that java's 'SansSerif' has wider characters (significantly different metrics) than the other
* sans-serif fonts in the list; thus it should be considered a fallback option only.
* Also note that some fonts (Times, Helvetica, Courier, Monospace, Serif) tend to truncate some
* diacritical marks when using FontMetrics.getHeight (as ImageJ does), e.g. the ring of the
* Angstrom symbol Å may be clipped (at least on Java 1.6/Mac)
*/
public static String[] getSimilarFontsList(String fontFamily) {
if (fontFamily.indexOf("Times")>=0 || fontFamily.indexOf("Serif")>=0)
return new String[]{"Times New Roman", "Times", "Liberation Serif", "Serif"};
else if (fontFamily.indexOf("Arial")>=0 || fontFamily.indexOf("Helvetica")>=0 || fontFamily.indexOf("Sans")>=0)
return new String[]{"Arial", "Helvetica", "Helvetica Neue", "Liberation Sans", "SansSerif"};
else if (fontFamily.indexOf("Courier")>=0 || fontFamily.indexOf("Mono")>=0)
return new String[]{"Courier New", "Courier", "Liberation Mono", "Monospaced"};
else
return new String[]{fontFamily};
}
}
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