internal static int GetStartOfLineOffset(TextEditorData data, DocumentLocation loc)
{
var line = data.Document.GetLine(loc.Line);
loc = new DocumentLocation(loc.Line, line.Length + 1);
// handle folding
var foldings = data.Document.GetFoldingsFromOffset(line.Offset);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings)
{
if (folding.IsCollapsed)
{
if (segment != null && segment.Offset < folding.Offset)
{
continue;
}
segment = folding;
}
}
if (segment != null)
{
loc = data.Document.OffsetToLocation(segment.GetStartLine(data.Document).Offset);
}
line = data.GetLine(loc.Line);
return(line.Offset);
}
internal static void InternalCaretMoveHome(TextEditorData data, bool firstNonWhitespace, bool hop)
{
using (var undo = data.OpenUndoGroup()) {
if (!data.Caret.PreserveSelection)
{
data.ClearSelection();
}
DocumentLine line = data.Document.GetLine(data.Caret.Line);
int newColumn;
if (firstNonWhitespace)
{
int homeMark = GetHomeMark(data.Document, line);
if (hop)
{
newColumn = data.Caret.Column == homeMark ? DocumentLocation.MinColumn : homeMark;
}
else
{
newColumn = homeMark;
}
}
else
{
newColumn = DocumentLocation.MinColumn;
}
var newLocation = new DocumentLocation(data.Caret.Line, newColumn);
// handle folding
IEnumerable <FoldSegment> foldings = data.Document.GetEndFoldings(line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings)
{
if (folding.IsCollapsed && folding.Contains(data.Document.LocationToOffset(newLocation)))
{
segment = folding;
break;
}
}
if (segment != null)
{
newLocation = data.Document.OffsetToLocation(segment.GetStartLine(data.Document).Offset);
}
if (newLocation != data.Caret.Location)
{
data.Caret.Location = newLocation;
}
}
}
void HighlightFold(FoldSegment segment)
{
var line = segment.GetStartLine(editor.Document);
var list = new List <FoldSegment>(editor.Document.GetFoldingContaining(line));
list.Sort((x, y) => x.Offset.CompareTo(y.Offset));
editor.TextViewMargin.DisposeLayoutDict();
editor.TextViewMargin.BackgroundRenderer = new FoldingScreenbackgroundRenderer(editor, list);
editor.ScrollTo(line.LineNumber, 0);
if (accessibles != null)
{
AtkCocoaExtensions.SetCurrentFocus(accessibles[segment].Accessible);
}
}
void UpdateAccessibility()
{
var startLine = segment.GetStartLine(editor.Document).LineNumber;
var endLine = segment.GetEndLine(editor.Document).LineNumber;
Accessible.Label = GettextCatalog.GetString("Fold Region: Line {0} to line {1} - {2}", startLine, endLine,
segment.isFolded ? GettextCatalog.GetString("Folded") : GettextCatalog.GetString("Expanded"));
if (segment.isFolded)
{
Accessible.Help = GettextCatalog.GetString("Activate to expand the region");
}
else
{
Accessible.Help = GettextCatalog.GetString("Activate to fold the region");
}
startY = editor.LineToY(startLine);
double endY;
if (segment.isFolded)
{
endY = startY;
}
else
{
endY = editor.LineToY(endLine);
}
var rect = new Gdk.Rectangle(0, (int)startY, (int)margin.Width, (int)(endY - startY));
Accessible.FrameInGtkParent = rect;
var halfParentHeight = margin.RectInParent.Height / 2;
var dEndY = endY - halfParentHeight;
var cocoaEndY = halfParentHeight - dEndY;
var dStartY = startY - halfParentHeight;
var cocoaStartY = halfParentHeight - dStartY;
var minY = Math.Min(cocoaStartY, cocoaEndY);
var maxY = Math.Max(cocoaStartY, cocoaEndY);
Accessible.FrameInParent = new Gdk.Rectangle(0, (int)(minY - editor.LineHeight), (int)margin.Width, (int)((maxY - minY) + editor.LineHeight));
}