/**
* Calculates difference in columns between current editor caret position and end of the logical
* line fragment displayed on a current visual line.
*
* @param editor target editor
* @return difference in columns between current editor caret position and end of the logical line
* fragment displayed on a current visual line
*/
public static int calcAfterLineEnd(Editor editor) {
Document document = editor.getDocument();
CaretModel caretModel = editor.getCaretModel();
LogicalPosition logicalPosition = caretModel.getLogicalPosition();
int lineNumber = logicalPosition.line;
int columnNumber = logicalPosition.column;
if (lineNumber >= document.getLineCount()) {
return columnNumber;
}
int caretOffset = caretModel.getOffset();
int anchorLineEndOffset = document.getLineEndOffset(lineNumber);
List<? extends SoftWrap> softWraps =
editor.getSoftWrapModel().getSoftWrapsForLine(logicalPosition.line);
for (SoftWrap softWrap : softWraps) {
if (!editor.getSoftWrapModel().isVisible(softWrap)) {
continue;
}
int softWrapOffset = softWrap.getStart();
if (softWrapOffset == caretOffset) {
// There are two possible situations:
// *) caret is located on a visual line before soft wrap-introduced line feed;
// *) caret is located on a visual line after soft wrap-introduced line feed;
VisualPosition position = editor.offsetToVisualPosition(caretOffset - 1);
VisualPosition visualCaret = caretModel.getVisualPosition();
if (position.line == visualCaret.line) {
return visualCaret.column - position.column - 1;
}
}
if (softWrapOffset > caretOffset) {
anchorLineEndOffset = softWrapOffset;
break;
}
// Same offset corresponds to all soft wrap-introduced symbols, however, current method should
// behave differently in
// situations when the caret is located just before the soft wrap and at the next visual line.
if (softWrapOffset == caretOffset) {
boolean visuallyBeforeSoftWrap =
caretModel.getVisualPosition().line < editor.offsetToVisualPosition(caretOffset).line;
if (visuallyBeforeSoftWrap) {
anchorLineEndOffset = softWrapOffset;
break;
}
}
}
int lineEndColumnNumber = editor.offsetToLogicalPosition(anchorLineEndOffset).column;
return columnNumber - lineEndColumnNumber;
}
@Override
public RelativePoint recalculateLocation(final Balloon object) {
FindResult cursor = mySearchResults.getCursor();
if (cursor == null) return null;
final TextRange cur = cursor;
int startOffset = cur.getStartOffset();
int endOffset = cur.getEndOffset();
if (startOffset >= myEditor.getDocument().getTextLength()) {
if (!object.isDisposed()) {
requestBalloonHiding(object);
}
return null;
}
if (!SearchResults.insideVisibleArea(myEditor, cur)) {
requestBalloonHiding(object);
VisibleAreaListener visibleAreaListener =
new VisibleAreaListener() {
@Override
public void visibleAreaChanged(VisibleAreaEvent e) {
if (SearchResults.insideVisibleArea(myEditor, cur)) {
showReplacementPreview();
final VisibleAreaListener visibleAreaListener = this;
final boolean remove = myVisibleAreaListenersToRemove.remove(visibleAreaListener);
if (remove) {
myEditor.getScrollingModel().removeVisibleAreaListener(visibleAreaListener);
}
}
}
};
myEditor.getScrollingModel().addVisibleAreaListener(visibleAreaListener);
myVisibleAreaListenersToRemove.add(visibleAreaListener);
}
Point startPoint = myEditor.visualPositionToXY(myEditor.offsetToVisualPosition(startOffset));
Point endPoint = myEditor.visualPositionToXY(myEditor.offsetToVisualPosition(endOffset));
Point point = new Point((startPoint.x + endPoint.x) / 2, startPoint.y);
return new RelativePoint(myEditor.getContentComponent(), point);
}
@Override
@SuppressWarnings({"AssignmentToForLoopParameter"})
public void paint(
@NotNull Editor editor, @NotNull RangeHighlighter highlighter, @NotNull Graphics g) {
int startOffset = highlighter.getStartOffset();
final Document doc = highlighter.getDocument();
if (startOffset >= doc.getTextLength()) return;
final int endOffset = highlighter.getEndOffset();
final int endLine = doc.getLineNumber(endOffset);
int off;
int startLine = doc.getLineNumber(startOffset);
IndentGuideDescriptor descriptor =
editor.getIndentsModel().getDescriptor(startLine, endLine);
final CharSequence chars = doc.getCharsSequence();
do {
int start = doc.getLineStartOffset(startLine);
int end = doc.getLineEndOffset(startLine);
off = CharArrayUtil.shiftForward(chars, start, end, " \t");
startLine--;
} while (startLine > 1 && off < doc.getTextLength() && chars.charAt(off) == '\n');
final VisualPosition startPosition = editor.offsetToVisualPosition(off);
int indentColumn = startPosition.column;
// It's considered that indent guide can cross not only white space but comments, javadocs
// etc. Hence, there is a possible
// case that the first indent guide line is, say, single-line comment where comment
// symbols ('//') are located at the first
// visual column. We need to calculate correct indent guide column then.
int lineShift = 1;
if (indentColumn <= 0 && descriptor != null) {
indentColumn = descriptor.indentLevel;
lineShift = 0;
}
if (indentColumn <= 0) return;
final FoldingModel foldingModel = editor.getFoldingModel();
if (foldingModel.isOffsetCollapsed(off)) return;
final FoldRegion headerRegion =
foldingModel.getCollapsedRegionAtOffset(doc.getLineEndOffset(doc.getLineNumber(off)));
final FoldRegion tailRegion =
foldingModel.getCollapsedRegionAtOffset(
doc.getLineStartOffset(doc.getLineNumber(endOffset)));
if (tailRegion != null && tailRegion == headerRegion) return;
final boolean selected;
final IndentGuideDescriptor guide = editor.getIndentsModel().getCaretIndentGuide();
if (guide != null) {
final CaretModel caretModel = editor.getCaretModel();
final int caretOffset = caretModel.getOffset();
selected =
caretOffset >= off
&& caretOffset < endOffset
&& caretModel.getLogicalPosition().column == indentColumn;
} else {
selected = false;
}
Point start =
editor.visualPositionToXY(
new VisualPosition(startPosition.line + lineShift, indentColumn));
final VisualPosition endPosition = editor.offsetToVisualPosition(endOffset);
Point end =
editor.visualPositionToXY(new VisualPosition(endPosition.line, endPosition.column));
int maxY = end.y;
if (endPosition.line == editor.offsetToVisualPosition(doc.getTextLength()).line) {
maxY += editor.getLineHeight();
}
Rectangle clip = g.getClipBounds();
if (clip != null) {
if (clip.y >= maxY || clip.y + clip.height <= start.y) {
return;
}
maxY = Math.min(maxY, clip.y + clip.height);
}
final EditorColorsScheme scheme = editor.getColorsScheme();
g.setColor(
selected
? scheme.getColor(EditorColors.SELECTED_INDENT_GUIDE_COLOR)
: scheme.getColor(EditorColors.INDENT_GUIDE_COLOR));
// There is a possible case that indent line intersects soft wrap-introduced text.
// Example:
// this is a long line <soft-wrap>
// that| is soft-wrapped
// |
// | <- vertical indent
//
// Also it's possible that no additional intersections are added because of soft wrap:
// this is a long line <soft-wrap>
// | that is soft-wrapped
// |
// | <- vertical indent
// We want to use the following approach then:
// 1. Show only active indent if it crosses soft wrap-introduced text;
// 2. Show indent as is if it doesn't intersect with soft wrap-introduced text;
if (selected) {
g.drawLine(start.x + 2, start.y, start.x + 2, maxY);
} else {
int y = start.y;
int newY = start.y;
SoftWrapModel softWrapModel = editor.getSoftWrapModel();
int lineHeight = editor.getLineHeight();
for (int i = Math.max(0, startLine + lineShift); i < endLine && newY < maxY; i++) {
List<? extends SoftWrap> softWraps = softWrapModel.getSoftWrapsForLine(i);
int logicalLineHeight = softWraps.size() * lineHeight;
if (i > startLine + lineShift) {
logicalLineHeight +=
lineHeight; // We assume that initial 'y' value points just below the target
// line.
}
if (!softWraps.isEmpty() && softWraps.get(0).getIndentInColumns() < indentColumn) {
if (y < newY
|| i
> startLine
+ lineShift) { // There is a possible case that soft wrap is located on
// indent start line.
g.drawLine(start.x + 2, y, start.x + 2, newY + lineHeight);
}
newY += logicalLineHeight;
y = newY;
} else {
newY += logicalLineHeight;
}
FoldRegion foldRegion =
foldingModel.getCollapsedRegionAtOffset(doc.getLineEndOffset(i));
if (foldRegion != null && foldRegion.getEndOffset() < doc.getTextLength()) {
i = doc.getLineNumber(foldRegion.getEndOffset());
}
}
if (y < maxY) {
g.drawLine(start.x + 2, y, start.x + 2, maxY);
}
}
}