private static void DrawFileTypeMark(DrawingContext dc, Rect rect, DiffLine diffLine)
{
string mark;
Brush brush;
if (diffLine.LineType == DiffLine.LineTypes.Add)
{
mark = "+";
brush = Brushes.Green;
}
else if (diffLine.LineType == DiffLine.LineTypes.Delete)
{
mark = "-";
brush = Brushes.Red;
}
else
return;
dc.DrawText(
new FormattedText(
mark,
CultureInfo.CurrentCulture,
FlowDirection.LeftToRight,
new Typeface("Consolas"),
14,
brush),
new Point(rect.Left + 4, rect.Top - 1));
}
public static void DrawBackground(
TextView textView, DrawingContext dc, double x, double width, DiffLine[] diffLines,
bool isLight,
Action<PerLineDrawArgs> perLineDraw = null)
{
if (diffLines == null)
return;
foreach (var visualLine in textView.VisualLines)
{
var linenum = visualLine.FirstDocumentLine.LineNumber - 1;
if (linenum >= diffLines.Length)
continue;
var diffLine = diffLines[linenum];
var brush = default(Brush);
switch (diffLine.LineType)
{
case DiffLine.LineTypes.ChunkTag:
brush = isLight
? Constants.LightChunkTagBackground
: Constants.ChunkTagBackground;
break;
case DiffLine.LineTypes.Add:
brush = isLight
? Constants.LightAddBackground
: Constants.AddBackground;
break;
case DiffLine.LineTypes.Delete:
brush = isLight
? Constants.LightRemoveBackground
: Constants.RemoveBackground;
break;
}
var perLineDrawArgs = new PerLineDrawArgs
{
TextView = textView,
VisualLine = visualLine,
DrawingContext = dc,
DiffLine = diffLine
};
var index = 0;
foreach (
var segRect in BackgroundGeometryBuilder.GetRectsFromVisualSegment(textView, visualLine, 0, 1000))
{
var rect = new Rect(x, segRect.Top, width, segRect.Height + 1);
// ReSharper disable once PossibleUnintendedReferenceComparison
if (brush != default(Brush))
using (new GuidelineSetBlock(dc, rect))
dc.DrawRectangle(brush, null, rect);
if (perLineDraw != null)
{
perLineDrawArgs.Rect = rect;
perLineDrawArgs.Index = index;
perLineDraw.Invoke(perLineDrawArgs);
}
++index;
}
}
}
public void MakeDiff(string patch)
{
var sb = new StringBuilder();
{
var diffLinesTemp = new List<DiffLine>();
try
{
var fileDiffs = ParseDiff.Diff.Parse(patch).FirstOrDefault();
if (fileDiffs != null)
{
foreach (var chunck in fileDiffs.Chunks)
{
sb.AppendLine(chunck.Content.TrimEnd('\r', '\n'));
diffLinesTemp.Add(new DiffLine {LineType = DiffLine.LineTypes.ChunckTag});
var oldIndex = chunck.OldStart - 1;
var newIndex = chunck.NewStart - 1;
var addDeletePairs = new Dictionary<int, DiffLine[]>();
foreach (var l in chunck.Changes)
{
switch (l.Type)
{
case LineChangeType.Normal:
++oldIndex;
++newIndex;
break;
case LineChangeType.Add:
++newIndex;
break;
case LineChangeType.Delete:
++oldIndex;
break;
}
var diffLine =
new DiffLine
{
OldIndex = oldIndex,
NewIndex = newIndex,
LineType = (DiffLine.LineTypes) l.Type,
Index = l.Index,
Content = l.Content.Substring(1)
};
diffLinesTemp.Add(diffLine);
sb.AppendLine(diffLine.Content.TrimEnd('\r', '\n'));
if (l.Type == LineChangeType.Delete)
{
Debug.Assert(l.Index != 0);
if (addDeletePairs.ContainsKey(l.Index) == false)
addDeletePairs[l.Index] = new DiffLine[2];
addDeletePairs[l.Index][0] = diffLine;
}
else if (l.Type == LineChangeType.Add)
{
Debug.Assert(l.Index != 0);
if (addDeletePairs.ContainsKey(l.Index) == false)
addDeletePairs[l.Index] = new DiffLine[2];
addDeletePairs[l.Index][1] = diffLine;
}
}
MakeContentDiffs(addDeletePairs);
}
}
}
catch
{
diffLinesTemp.Clear();
}
DiffLines = diffLinesTemp.ToArray();
}
Diff = sb.ToString().TrimEnd('\r', '\n');
}
private static void DrawIndex(DrawingContext dc, Rect rect, DiffLine diffLine)
{
switch(diffLine.LineType)
{
case DiffLine.LineTypes.ChunkTag:
DrawIndexText(dc, rect, "･･･", OldIndexOffset, TextAlignment.Center);
DrawIndexText(dc, rect, "･･･", NewIndexOffset, TextAlignment.Center);
break;
case DiffLine.LineTypes.Normal:
DrawIndexText(dc, rect, diffLine.OldIndex, OldIndexOffset, TextAlignment.Right);
DrawIndexText(dc, rect, diffLine.NewIndex, NewIndexOffset, TextAlignment.Right);
break;
case DiffLine.LineTypes.Add:
DrawIndexText(dc, rect, diffLine.NewIndex, NewIndexOffset, TextAlignment.Right);
break;
case DiffLine.LineTypes.Delete:
DrawIndexText(dc, rect, diffLine.OldIndex, OldIndexOffset, TextAlignment.Right);
break;
}
}