private ProperTextRange offsetToYPosition(int start, int end) {
if (myEditorScrollbarTop == -1 || myEditorTargetHeight == -1) {
recalcEditorDimensions();
}
Document document = myEditor.getDocument();
int startLineNumber = offsetToLine(start, document);
int startY;
int lineCount;
if (myEditorSourceHeight < myEditorTargetHeight) {
lineCount = 0;
startY = myEditorScrollbarTop + startLineNumber * myEditor.getLineHeight();
} else {
lineCount = myEditorSourceHeight / myEditor.getLineHeight();
startY =
myEditorScrollbarTop + (int) ((float) startLineNumber / lineCount * myEditorTargetHeight);
}
int endY;
if (document.getLineNumber(start) == document.getLineNumber(end)) {
endY = startY; // both offsets are on the same line, no need to recalc Y position
} else {
int endLineNumber = offsetToLine(end, document);
if (myEditorSourceHeight < myEditorTargetHeight) {
endY = myEditorScrollbarTop + endLineNumber * myEditor.getLineHeight();
} else {
endY =
myEditorScrollbarTop + (int) ((float) endLineNumber / lineCount * myEditorTargetHeight);
}
if (endY < startY) endY = startY;
}
return new ProperTextRange(startY, endY);
}
private VerticalInfo createVerticalInfo(LogicalPosition position) {
Document document = myEditor.getDocument();
int logicalLine = position.line;
if (logicalLine >= document.getLineCount()) {
logicalLine = Math.max(0, document.getLineCount() - 1);
}
int startOffset = document.getLineStartOffset(logicalLine);
int endOffset = document.getLineEndOffset(logicalLine);
// There is a possible case that active logical line is represented on multiple lines due to
// soft wraps processing.
// We want to highlight those visual lines as 'active' then, so, we calculate 'y' position for
// the logical line start
// and height in accordance with the number of occupied visual lines.
VisualPosition visualPosition =
myEditor.offsetToVisualPosition(document.getLineStartOffset(logicalLine));
int y = myEditor.visualPositionToXY(visualPosition).y;
int lineHeight = myEditor.getLineHeight();
int height = lineHeight;
List<? extends SoftWrap> softWraps =
myEditor.getSoftWrapModel().getSoftWrapsForRange(startOffset, endOffset);
for (SoftWrap softWrap : softWraps) {
height += StringUtil.countNewLines(softWrap.getText()) * lineHeight;
}
return new VerticalInfo(y, height);
}
private int yPositionToOffset(int y, boolean beginLine) {
if (myEditorScrollbarTop == -1 || myEditorTargetHeight == -1) {
recalcEditorDimensions();
}
final int safeY = Math.max(0, y - myEditorScrollbarTop);
VisualPosition visual;
if (myEditorSourceHeight < myEditorTargetHeight) {
visual = myEditor.xyToVisualPosition(new Point(0, safeY));
} else {
float fraction = Math.max(0, Math.min(1, safeY / (float) myEditorTargetHeight));
final int lineCount = myEditorSourceHeight / myEditor.getLineHeight();
visual = new VisualPosition((int) (fraction * lineCount), 0);
}
int line = myEditor.visualToLogicalPosition(visual).line;
Document document = myEditor.getDocument();
if (line < 0) return 0;
if (line >= document.getLineCount()) return document.getTextLength();
return beginLine ? document.getLineStartOffset(line) : document.getLineEndOffset(line);
}
private void requestRepaint(VerticalInfo oldCaretInfo) {
int lineHeight = myEditor.getLineHeight();
Rectangle visibleArea = myEditor.getScrollingModel().getVisibleArea();
final EditorGutterComponentEx gutter = myEditor.getGutterComponentEx();
final EditorComponentImpl content = myEditor.getContentComponent();
int updateWidth =
myEditor.getScrollPane().getHorizontalScrollBar().getValue() + visibleArea.width;
if (Math.abs(myCaretInfo.y - oldCaretInfo.y) <= 2 * lineHeight) {
int minY = Math.min(oldCaretInfo.y, myCaretInfo.y);
int maxY = Math.max(oldCaretInfo.y + oldCaretInfo.height, myCaretInfo.y + myCaretInfo.height);
content.repaintEditorComponent(0, minY, updateWidth, maxY - minY);
gutter.repaint(0, minY, gutter.getWidth(), maxY - minY);
} else {
content.repaintEditorComponent(
0, oldCaretInfo.y, updateWidth, oldCaretInfo.height + lineHeight);
gutter.repaint(0, oldCaretInfo.y, updateWidth, oldCaretInfo.height + lineHeight);
content.repaintEditorComponent(
0, myCaretInfo.y, updateWidth, myCaretInfo.height + lineHeight);
gutter.repaint(0, myCaretInfo.y, updateWidth, myCaretInfo.height + lineHeight);
}
}
public void moveCaretRelatively(
int columnShift,
int lineShift,
boolean withSelection,
boolean blockSelection,
boolean scrollToCaret) {
assertIsDispatchThread();
SelectionModel selectionModel = myEditor.getSelectionModel();
int selectionStart = selectionModel.getLeadSelectionOffset();
LogicalPosition blockSelectionStart =
selectionModel.hasBlockSelection() ? selectionModel.getBlockStart() : getLogicalPosition();
EditorSettings editorSettings = myEditor.getSettings();
VisualPosition visualCaret = getVisualPosition();
int desiredX = myDesiredX;
if (columnShift == 0) {
if (myDesiredX < 0) {
desiredX = myEditor.visualPositionToXY(visualCaret).x;
}
} else {
myDesiredX = desiredX = -1;
}
int newLineNumber = visualCaret.line + lineShift;
int newColumnNumber = visualCaret.column + columnShift;
if (desiredX >= 0 && !ApplicationManager.getApplication().isUnitTestMode()) {
newColumnNumber =
myEditor.xyToVisualPosition(
new Point(desiredX, Math.max(0, newLineNumber) * myEditor.getLineHeight()))
.column;
}
Document document = myEditor.getDocument();
if (!editorSettings.isVirtualSpace()
&& columnShift == 0
&& getLogicalPosition().softWrapLinesOnCurrentLogicalLine <= 0) {
newColumnNumber = myEditor.getLastColumnNumber();
} else if (!editorSettings.isVirtualSpace() && lineShift == 0 && columnShift == 1) {
int lastLine = document.getLineCount() - 1;
if (lastLine < 0) lastLine = 0;
if (EditorModificationUtil.calcAfterLineEnd(myEditor) >= 0
&& newLineNumber
< myEditor.logicalToVisualPosition(new LogicalPosition(lastLine, 0)).line) {
newColumnNumber = 0;
newLineNumber++;
}
} else if (!editorSettings.isVirtualSpace() && lineShift == 0 && columnShift == -1) {
if (newColumnNumber < 0 && newLineNumber > 0) {
newLineNumber--;
newColumnNumber = EditorUtil.getLastVisualLineColumnNumber(myEditor, newLineNumber);
}
}
if (newColumnNumber < 0) newColumnNumber = 0;
// There is a possible case that caret is located at the first line and user presses 'Shift+Up'.
// We want to select all text
// from the document start to the current caret position then. So, we have a dedicated flag for
// tracking that.
boolean selectToDocumentStart = false;
if (newLineNumber < 0) {
selectToDocumentStart = true;
newLineNumber = 0;
// We want to move caret to the first column if it's already located at the first line and
// 'Up' is pressed.
newColumnNumber = 0;
desiredX = -1;
}
VisualPosition pos = new VisualPosition(newLineNumber, newColumnNumber);
int lastColumnNumber = newColumnNumber;
if (!editorSettings.isCaretInsideTabs() && !myEditor.getSoftWrapModel().isInsideSoftWrap(pos)) {
LogicalPosition log =
myEditor.visualToLogicalPosition(new VisualPosition(newLineNumber, newColumnNumber));
int offset = myEditor.logicalPositionToOffset(log);
if (offset >= document.getTextLength()) {
int lastOffsetColumn = myEditor.offsetToVisualPosition(document.getTextLength()).column;
// We want to move caret to the last column if if it's located at the last line and 'Down'
// is pressed.
newColumnNumber = lastColumnNumber = Math.max(lastOffsetColumn, newColumnNumber);
desiredX = -1;
}
CharSequence text = document.getCharsSequence();
if (offset >= 0 && offset < document.getTextLength()) {
if (text.charAt(offset) == '\t' && (columnShift <= 0 || offset == myOffset)) {
if (columnShift <= 0) {
newColumnNumber = myEditor.offsetToVisualPosition(offset).column;
} else {
SoftWrap softWrap = myEditor.getSoftWrapModel().getSoftWrap(offset + 1);
// There is a possible case that tabulation symbol is the last document symbol
// represented on a visual line before
// soft wrap. We can't just use column from 'offset + 1' because it would point on a
// next visual line.
if (softWrap == null) {
newColumnNumber = myEditor.offsetToVisualPosition(offset + 1).column;
} else {
newColumnNumber = EditorUtil.getLastVisualLineColumnNumber(myEditor, newLineNumber);
}
}
}
}
}
pos = new VisualPosition(newLineNumber, newColumnNumber);
if (columnShift != 0 && lineShift == 0 && myEditor.getSoftWrapModel().isInsideSoftWrap(pos)) {
LogicalPosition logical = myEditor.visualToLogicalPosition(pos);
int softWrapOffset = myEditor.logicalPositionToOffset(logical);
if (columnShift >= 0) {
moveToOffset(softWrapOffset);
} else {
int line = myEditor.offsetToVisualLine(softWrapOffset - 1);
moveToVisualPosition(
new VisualPosition(line, EditorUtil.getLastVisualLineColumnNumber(myEditor, line)));
}
} else {
moveToVisualPosition(pos);
if (!editorSettings.isVirtualSpace() && columnShift == 0) {
myEditor.setLastColumnNumber(lastColumnNumber);
}
}
if (withSelection) {
if (blockSelection) {
selectionModel.setBlockSelection(blockSelectionStart, getLogicalPosition());
} else {
if (selectToDocumentStart) {
selectionModel.setSelection(selectionStart, 0);
} else if (pos.line >= myEditor.getVisibleLineCount()) {
if (selectionStart < document.getTextLength()) {
selectionModel.setSelection(selectionStart, document.getTextLength());
}
} else {
selectionModel.setSelection(selectionStart, getVisualPosition(), getOffset());
}
}
} else {
selectionModel.removeSelection();
}
if (scrollToCaret) {
myEditor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
}
if (desiredX >= 0) {
myDesiredX = desiredX;
}
EditorActionUtil.selectNonexpandableFold(myEditor);
}