@NotNull
public static FontInfo getFontAbleToDisplay(
int codePoint, @JdkConstants.FontStyle int style, @NotNull FontPreferences preferences) {
boolean tryDefaultFont = true;
List<String> fontFamilies = preferences.getEffectiveFontFamilies();
FontInfo result;
//noinspection ForLoopReplaceableByForEach
for (int i = 0, len = fontFamilies.size();
i < len;
++i) { // avoid foreach, it instantiates ArrayList$Itr, this traversal happens very often
final String fontFamily = fontFamilies.get(i);
result =
doGetFontAbleToDisplay(codePoint, preferences.getSize(fontFamily), style, fontFamily);
if (result != null) {
return result;
}
tryDefaultFont &= !FontPreferences.DEFAULT_FONT_NAME.equals(fontFamily);
}
int size = FontPreferences.DEFAULT_FONT_SIZE;
if (!fontFamilies.isEmpty()) {
size = preferences.getSize(fontFamilies.get(0));
}
if (tryDefaultFont) {
result = doGetFontAbleToDisplay(codePoint, size, style, FontPreferences.DEFAULT_FONT_NAME);
if (result != null) {
return result;
}
}
result = doGetFontAbleToDisplay(codePoint, size, style);
if (LOG.isDebugEnabled()) {
LOG.debug("Fallback font: " + result.getFont().getFontName());
}
return result;
}
@Nullable
private static FontInfo doGetFontAbleToDisplay(
int codePoint,
int size,
@JdkConstants.FontStyle int originalStyle,
@NotNull String defaultFontFamily) {
synchronized (lock) {
@JdkConstants.FontStyle int style = originalStyle;
if (Patches.JDK_MAC_FONT_STYLE_DETECTION_WORKAROUND && style > 0 && style < 4) {
Pair<String, Integer>[] replacement = ourStyledFontMap.get(defaultFontFamily);
if (replacement != null) {
defaultFontFamily = replacement[style].first;
style = replacement[style].second;
}
}
if (ourSharedKeyInstance.mySize == size
&& ourSharedKeyInstance.myStyle == style
&& ourSharedKeyInstance.myFamilyName != null
&& ourSharedKeyInstance.myFamilyName.equals(defaultFontFamily)
&& ourSharedDefaultFont != null
&& (codePoint < 128 || ourSharedDefaultFont.canDisplay(codePoint))) {
return ourSharedDefaultFont;
}
ourSharedKeyInstance.myFamilyName = defaultFontFamily;
ourSharedKeyInstance.mySize = size;
ourSharedKeyInstance.myStyle = style;
FontInfo defaultFont = ourUsedFonts.get(ourSharedKeyInstance);
if (defaultFont == null) {
defaultFont = new FontInfo(defaultFontFamily, size, style, originalStyle);
ourUsedFonts.put(ourSharedKeyInstance, defaultFont);
ourSharedKeyInstance = new FontKey("", 0, 0);
}
ourSharedDefaultFont = defaultFont;
if (codePoint < 128 || defaultFont.canDisplay(codePoint)) {
return defaultFont;
} else {
return null;
}
}
}
@NotNull
private static FontInfo doGetFontAbleToDisplay(
int codePoint, int size, @JdkConstants.FontStyle int style) {
synchronized (lock) {
if (ourUndisplayableChars.contains(codePoint)) return ourSharedDefaultFont;
final Collection<FontInfo> descriptors = ourUsedFonts.values();
for (FontInfo font : descriptors) {
if (font.getSize() == size && font.getStyle() == style && font.canDisplay(codePoint)) {
return font;
}
}
for (int i = 0; i < ourFontNames.size(); i++) {
String name = ourFontNames.get(i);
FontInfo font = new FontInfo(name, size, style);
if (font.canDisplay(codePoint)) {
ourUsedFonts.put(new FontKey(name, size, style), font);
ourFontNames.remove(i);
return font;
}
}
ourUndisplayableChars.add(codePoint);
return ourSharedDefaultFont;
}
}