protected void paintSyntaxLine(
Graphics gfx,
TokenMarker tokenMarker,
int line,
Font defaultFont,
Color defaultColor,
int x,
int y) {
textArea.getLineText(currentLineIndex, currentLine);
currentLineTokens = tokenMarker.markTokens(currentLine, currentLineIndex);
paintHighlight(gfx, line, y);
gfx.setFont(defaultFont);
gfx.setColor(defaultColor);
y += fm.getHeight();
x = SyntaxUtilities.paintSyntaxLine(currentLine, currentLineTokens, styles, this, gfx, x, y);
/*
* Draw characters via input method.
*/
if (compositionTextPainter != null && compositionTextPainter.hasComposedTextLayout()) {
compositionTextPainter.draw(gfx, lineHighlightColor);
}
if (eolMarkers) {
gfx.setColor(eolMarkerColor);
gfx.drawString(".", x, y);
}
}
/**
* Repaints the text.
*
* @param gfx The graphics context
*/
public void paint(Graphics gfx) {
Graphics2D g2 = (Graphics2D) gfx;
g2.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
antialias
? RenderingHints.VALUE_TEXT_ANTIALIAS_ON
: RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
tabSize =
fm.charWidth(' ')
* ((Integer) textArea.getDocument().getProperty(PlainDocument.tabSizeAttribute))
.intValue();
Rectangle clipRect = gfx.getClipBounds();
gfx.setColor(getBackground());
gfx.fillRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);
// We don't use yToLine() here because that method doesn't
// return lines past the end of the document
int height = fm.getHeight();
int firstLine = textArea.getFirstLine();
int firstInvalid = firstLine + clipRect.y / height;
// Because the clipRect's height is usually an even multiple
// of the font height, we subtract 1 from it, otherwise one
// too many lines will always be painted.
int lastInvalid = firstLine + (clipRect.y + clipRect.height - 1) / height;
try {
TokenMarker tokenMarker = textArea.getDocument().getTokenMarker();
int x = textArea.getHorizontalOffset();
for (int line = firstInvalid; line <= lastInvalid; line++) {
paintLine(gfx, tokenMarker, line, x);
}
if (tokenMarker != null && tokenMarker.isNextLineRequested()) {
int h = clipRect.y + clipRect.height;
repaint(0, h, getWidth(), getHeight() - h);
}
} catch (Exception e) {
System.err.println(
"Error repainting line" + " range {" + firstInvalid + "," + lastInvalid + "}:");
e.printStackTrace();
}
}