/**
* 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 drawCharacters(int x, int y, TextStyle style, CharBuffer buf, Graphics2D gfx) {
int xCoord = x * myCharSize.width;
int yCoord = y * myCharSize.height;
if (xCoord < 0 || xCoord > getWidth() || yCoord < 0 || yCoord > getHeight()) {
return;
}
gfx.setColor(getPalette().getColor(myStyleState.getBackground(style.getBackgroundForRun())));
int textLength =
CharUtils.getTextLengthDoubleWidthAware(
buf.getBuf(),
buf.getStart(),
buf.length(),
mySettingsProvider.ambiguousCharsAreDoubleWidth());
gfx.fillRect(
xCoord,
yCoord,
Math.min(textLength * myCharSize.width, getWidth() - xCoord),
Math.min(myCharSize.height, getHeight() - yCoord));
if (buf.isNul()) {
return; // nothing more to do
}
drawChars(x, y, buf, style, gfx);
gfx.setColor(getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
int baseLine = (y + 1) * myCharSize.height - myDescent;
if (style.hasOption(TextStyle.Option.UNDERLINED)) {
gfx.drawLine(xCoord, baseLine + 1, (x + textLength) * myCharSize.width, baseLine + 1);
}
}
private void drawInputMethodUncommitedChars(Graphics2D gfx) {
if (myInputMethodUncommitedChars != null && myInputMethodUncommitedChars.length() > 0) {
int x = myCursor.getCoordX() * myCharSize.width;
int y = (myCursor.getCoordY()) * myCharSize.height - 2;
int len = (myInputMethodUncommitedChars.length()) * myCharSize.width;
gfx.setColor(getBackground());
gfx.fillRect(x, (myCursor.getCoordY() - 1) * myCharSize.height, len, myCharSize.height);
gfx.setColor(getForeground());
gfx.setFont(myNormalFont);
gfx.drawString(myInputMethodUncommitedChars, x, y);
Stroke saved = gfx.getStroke();
BasicStroke dotted =
new BasicStroke(
1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 0, new float[] {0, 2, 0, 2}, 0);
gfx.setStroke(dotted);
gfx.drawLine(x, y, x + len, y);
gfx.setStroke(saved);
}
}
public void drawCursor(char c, Graphics2D gfx, TextStyle style) {
TerminalCursorState state = computeCursorState();
// hidden: do nothing
if (state == TerminalCursorState.HIDDEN) {
return;
} else {
final int x = getCoordX();
final int y = getCoordY();
if (y >= 0 && y < myTermSize.height) {
if (state == TerminalCursorState.SHOWING) {
TextStyle styleToDraw = getInversedStyle(style);
drawCharacters(x, y, styleToDraw, new CharBuffer(c, 1), gfx);
} else if (state == TerminalCursorState.NO_FOCUS) {
int xCoord = x * myCharSize.width;
int yCoord = y * myCharSize.height;
gfx.setColor(
getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
gfx.drawRect(xCoord, yCoord, myCharSize.width - 1, myCharSize.height - 1);
}
}
}
}
@Override
public void paintComponent(final Graphics g) {
final Graphics2D gfx = (Graphics2D) g;
setupAntialiasing(gfx);
gfx.setColor(getBackground());
gfx.fillRect(0, 0, getWidth(), getHeight());
myTerminalTextBuffer.processHistoryAndScreenLines(
myClientScrollOrigin,
new StyledTextConsumer() {
final int columnCount = getColumnCount();
@Override
public void consume(
int x,
int y,
@NotNull TextStyle style,
@NotNull CharBuffer characters,
int startRow) {
int row = y - startRow;
drawCharacters(x, row, style, characters, gfx);
if (mySelection != null) {
Pair<Integer, Integer> interval =
mySelection.intersect(x, row + myClientScrollOrigin, characters.length());
if (interval != null) {
TextStyle selectionStyle = getSelectionStyle(style);
CharBuffer selectionChars =
characters.subBuffer(interval.first - x, interval.second);
drawCharacters(interval.first, row, selectionStyle, selectionChars, gfx);
}
}
}
@Override
public void consumeNul(
int x, int y, int nulIndex, TextStyle style, CharBuffer characters, int startRow) {
int row = y - startRow;
if (mySelection != null) {
// compute intersection with all NUL areas, non-breaking
Pair<Integer, Integer> interval =
mySelection.intersect(
nulIndex, row + myClientScrollOrigin, columnCount - nulIndex);
if (interval != null) {
TextStyle selectionStyle = getSelectionStyle(style);
drawCharacters(x, row, selectionStyle, characters, gfx);
return;
}
}
drawCharacters(x, row, style, characters, gfx);
}
@Override
public void consumeQueue(int x, int y, int nulIndex, int startRow) {
if (x < columnCount) {
consumeNul(
x,
y,
nulIndex,
TextStyle.EMPTY,
new CharBuffer(CharUtils.EMPTY_CHAR, columnCount - x),
startRow);
}
}
});
int cursorY = myCursor.getCoordY();
if (myClientScrollOrigin + getRowCount() > cursorY) {
int cursorX = myCursor.getCoordX();
Pair<Character, TextStyle> sc = myTerminalTextBuffer.getStyledCharAt(cursorX, cursorY);
TextStyle normalStyle = sc.second != null ? sc.second : myStyleState.getCurrent();
TextStyle selectionStyle = getSelectionStyle(normalStyle);
boolean inSelection = inSelection(cursorX, cursorY);
myCursor.drawCursor(sc.first, gfx, inSelection ? selectionStyle : normalStyle);
}
drawInputMethodUncommitedChars(gfx);
drawMargins(gfx, getWidth(), getHeight());
}
private void drawMargins(Graphics2D gfx, int width, int height) {
gfx.setColor(getBackground());
gfx.fillRect(0, height, getWidth(), getHeight() - height);
gfx.fillRect(width, 0, getWidth() - width, getHeight());
}