/**
* Draw every char in separate terminal cell to guaranty equal width for different lines.
* Nevertheless to improve kerning we draw word characters as one block for monospaced fonts.
*/
private void drawChars(int x, int y, CharBuffer buf, TextStyle style, Graphics2D gfx) {
final int blockLen = 1;
int offset = 0;
int drawCharsOffset = 0;
// workaround to fix Swing bad rendering of bold special chars on Linux
// TODO required for italic?
CharBuffer renderingBuffer;
if (mySettingsProvider.DECCompatibilityMode() && style.hasOption(TextStyle.Option.BOLD)) {
renderingBuffer = CharUtils.heavyDecCompatibleBuffer(buf);
} else {
renderingBuffer = buf;
}
while (offset + blockLen <= buf.length()) {
if (renderingBuffer.getBuf()[buf.getStart() + offset] == CharUtils.DWC) {
offset += blockLen;
drawCharsOffset += blockLen;
continue; // dont' draw second part(fake one) of double width character
}
Font font = getFontToDisplay(buf.charAt(offset + blockLen - 1), style);
// while (myMonospaced && (offset + blockLen < buf.getLength()) &&
// isWordCharacter(buf.charAt(offset + blockLen - 1))
// && (font == getFontToDisplay(buf.charAt(offset + blockLen - 1), style))) {
// blockLen++;
// }
gfx.setFont(font);
int descent = gfx.getFontMetrics(font).getDescent();
int baseLine = (y + 1) * myCharSize.height - descent;
int xCoord = (x + drawCharsOffset) * myCharSize.width;
int textLength =
CharUtils.getTextLengthDoubleWidthAware(
buf.getBuf(),
buf.getStart() + offset,
blockLen,
mySettingsProvider.ambiguousCharsAreDoubleWidth());
int yCoord = y * myCharSize.height;
gfx.setClip(
xCoord,
yCoord,
Math.min(textLength * myCharSize.width, getWidth() - xCoord),
Math.min(myCharSize.height, getHeight() - yCoord));
gfx.setColor(getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
gfx.drawChars(renderingBuffer.getBuf(), buf.getStart() + offset, blockLen, xCoord, baseLine);
drawCharsOffset += blockLen;
offset += blockLen;
}
gfx.setClip(null);
}
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();
}