protected void paintHighlight(Graphics gfx, int line, int y) {
if (line >= textArea.getSelectionStartLine() && line <= textArea.getSelectionEndLine())
paintLineHighlight(gfx, line, y);
if (highlights != null) highlights.paintHighlight(gfx, line, y);
if (bracketHighlight && line == textArea.getBracketLine()) paintBracketHighlight(gfx, line, y);
if (line == textArea.getCaretLine()) paintCaret(gfx, line, y);
}
protected void paintLineHighlight(Graphics gfx, int line, int y) {
int height = fm.getHeight();
y += fm.getLeading() + fm.getMaxDescent();
int selectionStart = textArea.getSelectionStart();
int selectionEnd = textArea.getSelectionEnd();
if (selectionStart == selectionEnd) {
if (lineHighlight) {
gfx.setColor(lineHighlightColor);
gfx.fillRect(0, y, getWidth(), height);
}
} else {
gfx.setColor(selectionColor);
int selectionStartLine = textArea.getSelectionStartLine();
int selectionEndLine = textArea.getSelectionEndLine();
int lineStart = textArea.getLineStartOffset(line);
int x1, x2;
if (textArea.isSelectionRectangular()) {
int lineLen = textArea.getLineLength(line);
x1 =
textArea._offsetToX(
line,
Math.min(
lineLen, selectionStart - textArea.getLineStartOffset(selectionStartLine)));
x2 =
textArea._offsetToX(
line,
Math.min(lineLen, selectionEnd - textArea.getLineStartOffset(selectionEndLine)));
if (x1 == x2) x2++;
} else if (selectionStartLine == selectionEndLine) {
x1 = textArea._offsetToX(line, selectionStart - lineStart);
x2 = textArea._offsetToX(line, selectionEnd - lineStart);
} else if (line == selectionStartLine) {
x1 = textArea._offsetToX(line, selectionStart - lineStart);
x2 = getWidth();
} else if (line == selectionEndLine) {
x1 = 0;
x2 = textArea._offsetToX(line, selectionEnd - lineStart);
} else {
x1 = 0;
x2 = getWidth();
}
// "inlined" min/max()
gfx.fillRect(x1 > x2 ? x2 : x1, y, x1 > x2 ? (x1 - x2) : (x2 - x1), height);
}
}