private void establishFontMetrics() {
final BufferedImage img = createBufferedImage(1, 1);
final Graphics2D graphics = img.createGraphics();
graphics.setFont(myNormalFont);
final float lineSpace = mySettingsProvider.getLineSpace();
final FontMetrics fo = graphics.getFontMetrics();
myDescent = fo.getDescent();
myCharSize.width = fo.charWidth('W');
myCharSize.height = fo.getHeight() + (int) (lineSpace * 2);
myDescent += lineSpace;
myMonospaced = isMonospaced(fo);
if (!myMonospaced) {
LOG.info("WARNING: Font " + myNormalFont.getName() + " is non-monospaced");
}
img.flush();
graphics.dispose();
}
private static boolean isMonospaced(FontMetrics fontMetrics) {
boolean isMonospaced = true;
int charWidth = -1;
for (int codePoint = 0; codePoint < 128; codePoint++) {
if (Character.isValidCodePoint(codePoint)) {
char character = (char) codePoint;
if (isWordCharacter(character)) {
int w = fontMetrics.charWidth(character);
if (charWidth != -1) {
if (w != charWidth) {
isMonospaced = false;
break;
}
} else {
charWidth = w;
}
}
}
}
return isMonospaced;
}