private void paintWhitespace(
Graphics2D g,
CharSequence text,
float x,
int y,
int start,
int end,
EditorImpl.LineWhitespacePaintingStrategy whitespacePaintingStrategy,
VisualLineFragmentsIterator.Fragment fragment) {
g.setColor(myEditor.getColorsScheme().getColor(EditorColors.WHITESPACES_COLOR));
boolean isRtl = fragment.isRtl();
int baseStartOffset = fragment.getStartOffset();
int startOffset = isRtl ? baseStartOffset - start : baseStartOffset + start;
for (int i = start; i < end; i++) {
int charOffset = isRtl ? baseStartOffset - i - 1 : baseStartOffset + i;
char c = text.charAt(charOffset);
if (" \t\u3000".indexOf(c) >= 0
&& whitespacePaintingStrategy.showWhitespaceAtOffset(charOffset)) {
int startX =
(int)
fragment.offsetToX(
x, startOffset, isRtl ? baseStartOffset - i : baseStartOffset + i);
int endX =
(int)
fragment.offsetToX(
x, startOffset, isRtl ? baseStartOffset - i - 1 : baseStartOffset + i + 1);
if (c == ' ') {
g.fillRect((startX + endX) / 2, y, 1, 1);
} else if (c == '\t') {
endX -= myView.getPlainSpaceWidth() / 4;
int height = myView.getCharHeight();
int halfHeight = height / 2;
int mid = y - halfHeight;
int top = y - height;
UIUtil.drawLine(g, startX, mid, endX, mid);
UIUtil.drawLine(g, endX, y, endX, top);
g.fillPolygon(
new int[] {endX - halfHeight, endX - halfHeight, endX},
new int[] {y, y - height, y - halfHeight},
3);
} else if (c == '\u3000') { // ideographic space
final int charHeight = myView.getCharHeight();
g.drawRect(startX + 2, y - charHeight, endX - startX - 4, charHeight);
}
}
}
}
private void paintBorderEffect(
Graphics2D g,
ClipDetector clipDetector,
int startOffset,
int endOffset,
TextAttributes attributes) {
if (!clipDetector.rangeCanBeVisible(startOffset, endOffset)) return;
int startLine = myDocument.getLineNumber(startOffset);
int endLine = myDocument.getLineNumber(endOffset);
if (startLine + 1 == endLine
&& startOffset == myDocument.getLineStartOffset(startLine)
&& endOffset == myDocument.getLineStartOffset(endLine)) {
// special case of line highlighters
endLine--;
endOffset = myDocument.getLineEndOffset(endLine);
}
boolean rounded = attributes.getEffectType() == EffectType.ROUNDED_BOX;
int lineHeight = myView.getLineHeight() - 1;
g.setColor(attributes.getEffectColor());
VisualPosition startPosition = myView.offsetToVisualPosition(startOffset, true, false);
VisualPosition endPosition = myView.offsetToVisualPosition(endOffset, false, true);
if (startPosition.line == endPosition.line) {
int y = myView.visualLineToY(startPosition.line);
TFloatArrayList ranges = adjustedLogicalRangeToVisualRanges(startOffset, endOffset);
for (int i = 0; i < ranges.size() - 1; i += 2) {
int startX = (int) ranges.get(i);
int endX = (int) ranges.get(i + 1);
if (rounded) {
UIUtil.drawRectPickedOut(g, startX, y, endX - startX, lineHeight);
} else {
g.drawRect(startX, y, endX - startX, lineHeight);
}
}
} else {
int maxWidth = myView.getMaxWidthInLineRange(startPosition.line, endPosition.line) - 1;
TFloatArrayList leadingRanges =
adjustedLogicalRangeToVisualRanges(
startOffset,
myView.visualPositionToOffset(
new VisualPosition(startPosition.line, Integer.MAX_VALUE, true)));
TFloatArrayList trailingRanges =
adjustedLogicalRangeToVisualRanges(
myView.visualPositionToOffset(new VisualPosition(endPosition.line, 0)), endOffset);
if (!leadingRanges.isEmpty() && !trailingRanges.isEmpty()) {
boolean containsInnerLines = endPosition.line > startPosition.line + 1;
int leadingTopY = myView.visualLineToY(startPosition.line);
int leadingBottomY = leadingTopY + lineHeight;
int trailingTopY = myView.visualLineToY(endPosition.line);
int trailingBottomY = trailingTopY + lineHeight;
float start = 0;
float end = 0;
float leftGap = leadingRanges.get(0) - (containsInnerLines ? 0 : trailingRanges.get(0));
int adjustY =
leftGap == 0 ? 2 : leftGap > 0 ? 1 : 0; // avoiding 1-pixel gap between aligned lines
for (int i = 0; i < leadingRanges.size() - 1; i += 2) {
start = leadingRanges.get(i);
end = leadingRanges.get(i + 1);
if (i > 0) {
drawLine(g, leadingRanges.get(i - 1), leadingBottomY, start, leadingBottomY, rounded);
}
drawLine(g, start, leadingBottomY + (i == 0 ? adjustY : 0), start, leadingTopY, rounded);
if ((i + 2) < leadingRanges.size()) {
drawLine(g, start, leadingTopY, end, leadingTopY, rounded);
drawLine(g, end, leadingTopY, end, leadingBottomY, rounded);
}
}
end = Math.max(end, maxWidth);
drawLine(g, start, leadingTopY, end, leadingTopY, rounded);
drawLine(g, end, leadingTopY, end, trailingTopY - 1, rounded);
float targetX = trailingRanges.get(trailingRanges.size() - 1);
drawLine(g, end, trailingTopY - 1, targetX, trailingTopY - 1, rounded);
adjustY =
end == targetX
? -2
: -1; // for lastX == targetX we need to avoid a gap when rounding is used
for (int i = trailingRanges.size() - 2; i >= 0; i -= 2) {
start = trailingRanges.get(i);
end = trailingRanges.get(i + 1);
drawLine(g, end, trailingTopY + (i == 0 ? adjustY : 0), end, trailingBottomY, rounded);
drawLine(g, end, trailingBottomY, start, trailingBottomY, rounded);
drawLine(g, start, trailingBottomY, start, trailingTopY, rounded);
if (i > 0) {
drawLine(g, start, trailingTopY, trailingRanges.get(i - 1), trailingTopY, rounded);
}
}
float lastX = start;
if (containsInnerLines) {
if (start > 0) {
drawLine(g, start, trailingTopY, start, trailingTopY - 1, rounded);
drawLine(g, start, trailingTopY - 1, 0, trailingTopY - 1, rounded);
drawLine(g, 0, trailingTopY - 1, 0, leadingBottomY + 1, rounded);
} else {
drawLine(g, start, trailingTopY, 0, leadingBottomY + 1, rounded);
}
lastX = 0;
}
targetX = leadingRanges.get(0);
if (lastX < targetX) {
drawLine(g, lastX, leadingBottomY + 1, targetX, leadingBottomY + 1, rounded);
} else {
drawLine(g, lastX, leadingBottomY + 1, lastX, leadingBottomY, rounded);
drawLine(g, lastX, leadingBottomY, targetX, leadingBottomY, rounded);
}
}
}
}