int tabSize = 4;
protected override void drawContent (Context gr) {
- lock(TokenMutex) {
- if (source == null || source.Tokens.Length == 0) {
- base.drawContent (gr);
- return;
- }
-
- Rectangle cb = ClientRectangle;
- fe = gr.FontExtents;
- double lineHeight = fe.Ascent + fe.Descent;
-
- CharLocation selStart = default, selEnd = default;
- bool selectionNotEmpty = false;
-
- if (HasFocus) {
- if (currentLoc?.Column < 0) {
- updateLocation (gr, cb.Width, ref currentLoc);
- NotifyValueChanged ("CurrentColumn", CurrentColumn);
- } else
- updateLocation (gr, cb.Width, ref currentLoc);
-
- if (overlay != null) {
- Point p = new Point((int)currentLoc.Value.VisualCharXPosition, (int)(lineHeight * (currentLoc.Value.Line + 1)));
- p += ScreenCoordinates (Slot).TopLeft;
- overlay.Left = p.X;
- overlay.Top = p.Y;
+ try {
+ lock(TokenMutex) {
+ if (source == null || source.Tokens.Length == 0) {
+ base.drawContent (gr);
+ return;
}
- if (selectionStart.HasValue) {
- updateLocation (gr, cb.Width, ref selectionStart);
- if (CurrentLoc.Value != selectionStart.Value)
- selectionNotEmpty = true;
- }
- if (selectionNotEmpty) {
- if (CurrentLoc.Value.Line < selectionStart.Value.Line) {
- selStart = CurrentLoc.Value;
- selEnd = selectionStart.Value;
- } else if (CurrentLoc.Value.Line > selectionStart.Value.Line) {
- selStart = selectionStart.Value;
- selEnd = CurrentLoc.Value;
- } else if (CurrentLoc.Value.Column < selectionStart.Value.Column) {
- selStart = CurrentLoc.Value;
- selEnd = selectionStart.Value;
- } else {
- selStart = selectionStart.Value;
- selEnd = CurrentLoc.Value;
- }
- } else
- IFace.forceTextCursor = true;
- }
-
- double spacePixelWidth = gr.TextExtents (" ").XAdvance;
- int x = 0, y = 0;
- double pixX = cb.Left;
-
+
+ Rectangle cb = ClientRectangle;
+ fe = gr.FontExtents;
+ double lineHeight = fe.Ascent + fe.Descent;
- Foreground.SetAsSource (IFace, gr);
- gr.Translate (-ScrollX, -ScrollY);
+ CharLocation selStart = default, selEnd = default;
+ bool selectionNotEmpty = false;
+ if (HasFocus) {
+ if (currentLoc?.Column < 0) {
+ updateLocation (gr, cb.Width, ref currentLoc);
+ NotifyValueChanged ("CurrentColumn", CurrentColumn);
+ } else
+ updateLocation (gr, cb.Width, ref currentLoc);
- ReadOnlySpan<char> sourceBytes = source.Source.AsSpan();
- Span<byte> bytes = stackalloc byte[128];
- TextExtents extents;
- int tokPtr = 0;
- Token tok = source.Tokens[tokPtr];
- bool multilineToken = false;
+ if (overlay != null) {
+ Point p = new Point((int)currentLoc.Value.VisualCharXPosition, (int)(lineHeight * (currentLoc.Value.Line + 1)));
+ p += ScreenCoordinates (Slot).TopLeft;
+ overlay.Left = p.X;
+ overlay.Top = p.Y;
+ }
+ if (selectionStart.HasValue) {
+ updateLocation (gr, cb.Width, ref selectionStart);
+ if (CurrentLoc.Value != selectionStart.Value)
+ selectionNotEmpty = true;
+ }
+ if (selectionNotEmpty) {
+ if (CurrentLoc.Value.Line < selectionStart.Value.Line) {
+ selStart = CurrentLoc.Value;
+ selEnd = selectionStart.Value;
+ } else if (CurrentLoc.Value.Line > selectionStart.Value.Line) {
+ selStart = selectionStart.Value;
+ selEnd = CurrentLoc.Value;
+ } else if (CurrentLoc.Value.Column < selectionStart.Value.Column) {
+ selStart = CurrentLoc.Value;
+ selEnd = selectionStart.Value;
+ } else {
+ selStart = selectionStart.Value;
+ selEnd = CurrentLoc.Value;
+ }
+ } else
+ IFace.forceTextCursor = true;
+ }
- ReadOnlySpan<char> buff = sourceBytes;
+ double spacePixelWidth = gr.TextExtents (" ").XAdvance;
+ int x = 0, y = 0;
+ double pixX = cb.Left;
- for (int i = 0; i < lines.Count; i++) {
- //if (!cancelLinePrint (lineHeight, lineHeight * y, cb.Height)) {
+ Foreground.SetAsSource (IFace, gr);
+ gr.Translate (-ScrollX, -ScrollY);
- if (multilineToken) {
- if (tok.End < lines[i].End) {//last incomplete line of multiline token
- buff = sourceBytes.Slice (lines[i].Start, tok.End - lines[i].Start);
- } else {//print full line
- buff = sourceBytes.Slice (lines[i].Start, lines[i].Length);
- }
- }
- while (tok.Start < lines[i].End) {
- if (!multilineToken) {
- if (tok.End > lines[i].End) {//first line of multiline
- multilineToken = true;
- buff = sourceBytes.Slice (tok.Start, lines[i].End - tok.Start);
- } else
- buff = sourceBytes.Slice (tok.Start, tok.Length);
-
- if (tok.Type.HasFlag (TokenType.Punctuation))
- gr.SetSource(Colors.DarkGrey);
- else if (tok.Type.HasFlag (TokenType.Trivia))
- gr.SetSource(Colors.DimGrey);
- else if (tok.Type == TokenType.ElementName) {
- gr.SetSource(Colors.Green);
- }else if (tok.Type == TokenType.AttributeName) {
- gr.SetSource(Colors.Blue);
- }else if (tok.Type == TokenType.AttributeValue) {
- gr.SetSource(Colors.OrangeRed);
- }else if (tok.Type == TokenType.EqualSign) {
- gr.SetSource(Colors.Black);
- }else if (tok.Type == TokenType.PI_Target) {
- gr.SetSource(Colors.DarkSlateBlue);
- }else {
- gr.SetSource(Colors.Red);
- }
- }
+ ReadOnlySpan<char> sourceBytes = source.Source.AsSpan();
+ Span<byte> bytes = stackalloc byte[128];
+ TextExtents extents;
+ int tokPtr = 0;
+ Token tok = source.Tokens[tokPtr];
+ bool multilineToken = false;
- int size = buff.Length * 4 + 1;
- if (bytes.Length < size)
- bytes = size > 512 ? new byte[size] : stackalloc byte[size];
+ ReadOnlySpan<char> buff = sourceBytes;
- int encodedBytes = Crow.Text.Encoding.ToUtf8 (buff, bytes);
- if (encodedBytes > 0) {
- bytes[encodedBytes++] = 0;
- gr.TextExtents (bytes.Slice (0, encodedBytes), out extents);
- gr.MoveTo (pixX, lineHeight * y + fe.Ascent);
- gr.ShowText (bytes.Slice (0, encodedBytes));
- pixX += extents.XAdvance;
- x += buff.Length;
- }
+ for (int i = 0; i < lines.Count; i++) {
+ //if (!cancelLinePrint (lineHeight, lineHeight * y, cb.Height)) {
if (multilineToken) {
- if (tok.End < lines[i].End)//last incomplete line of multiline token
- multilineToken = false;
- else
- break;
+ if (tok.End < lines[i].End) {//last incomplete line of multiline token
+ buff = sourceBytes.Slice (lines[i].Start, tok.End - lines[i].Start);
+ } else {//print full line
+ buff = sourceBytes.Slice (lines[i].Start, lines[i].Length);
+ }
}
- if (++tokPtr >= source.Tokens.Length)
- break;
- tok = source.Tokens[tokPtr];
- }
-
- if (HasFocus && selectionNotEmpty) {
- RectangleD lineRect = new RectangleD (cb.X, lineHeight * y + cb.Top, pixX, lineHeight);
- RectangleD selRect = lineRect;
-
- if (i >= selStart.Line && i <= selEnd.Line) {
- if (selStart.Line == selEnd.Line) {
- selRect.X = selStart.VisualCharXPosition + cb.X;
- selRect.Width = selEnd.VisualCharXPosition - selStart.VisualCharXPosition;
- } else if (i == selStart.Line) {
- double newX = selStart.VisualCharXPosition + cb.X;
- selRect.Width -= (newX - selRect.X) - 10.0;
- selRect.X = newX;
- } else if (i == selEnd.Line)
- selRect.Width = selEnd.VisualCharXPosition - selRect.X + cb.X;
- else
- selRect.Width += 10.0;
+ while (tok.Start < lines[i].End) {
+ if (!multilineToken) {
+ if (tok.End > lines[i].End) {//first line of multiline
+ multilineToken = true;
+ buff = sourceBytes.Slice (tok.Start, lines[i].End - tok.Start);
+ } else
+ buff = sourceBytes.Slice (tok.Start, tok.Length);
+
+ if (tok.Type.HasFlag (TokenType.Punctuation))
+ gr.SetSource(Colors.DarkGrey);
+ else if (tok.Type.HasFlag (TokenType.Trivia))
+ gr.SetSource(Colors.DimGrey);
+ else if (tok.Type == TokenType.ElementName) {
+ gr.SetSource(Colors.Green);
+ }else if (tok.Type == TokenType.AttributeName) {
+ gr.SetSource(Colors.Blue);
+ }else if (tok.Type == TokenType.AttributeValue) {
+ gr.SetSource(Colors.OrangeRed);
+ }else if (tok.Type == TokenType.EqualSign) {
+ gr.SetSource(Colors.Black);
+ }else if (tok.Type == TokenType.PI_Target) {
+ gr.SetSource(Colors.DarkSlateBlue);
+ }else {
+ gr.SetSource(Colors.Red);
+ }
+ }
- buff = sourceBytes.Slice(lines[i].Start, lines[i].Length);
int size = buff.Length * 4 + 1;
if (bytes.Length < size)
bytes = size > 512 ? new byte[size] : stackalloc byte[size];
int encodedBytes = Crow.Text.Encoding.ToUtf8 (buff, bytes);
- gr.SetSource (SelectionBackground);
- gr.Rectangle (selRect);
- if (encodedBytes < 0)
- gr.Fill ();
- else {
- gr.FillPreserve ();
- gr.Save ();
- gr.Clip ();
- gr.SetSource (SelectionForeground);
- gr.MoveTo (lineRect.X, lineRect.Y + fe.Ascent);
+ if (encodedBytes > 0) {
+ bytes[encodedBytes++] = 0;
+ gr.TextExtents (bytes.Slice (0, encodedBytes), out extents);
+ gr.MoveTo (pixX, lineHeight * y + fe.Ascent);
gr.ShowText (bytes.Slice (0, encodedBytes));
- gr.Restore ();
+ pixX += extents.XAdvance;
+ x += buff.Length;
}
- Foreground.SetAsSource (IFace, gr);
+
+ if (multilineToken) {
+ if (tok.End < lines[i].End)//last incomplete line of multiline token
+ multilineToken = false;
+ else
+ break;
+ }
+
+ if (++tokPtr >= source.Tokens.Length)
+ break;
+ tok = source.Tokens[tokPtr];
}
- }
- if (!multilineToken) {
- if (++tokPtr >= source.Tokens.Length)
- break;
- tok = source.Tokens[tokPtr];
- }
+ if (HasFocus && selectionNotEmpty) {
+ RectangleD lineRect = new RectangleD (cb.X, lineHeight * y + cb.Top, pixX, lineHeight);
+ RectangleD selRect = lineRect;
+
+ if (i >= selStart.Line && i <= selEnd.Line) {
+ if (selStart.Line == selEnd.Line) {
+ selRect.X = selStart.VisualCharXPosition + cb.X;
+ selRect.Width = selEnd.VisualCharXPosition - selStart.VisualCharXPosition;
+ } else if (i == selStart.Line) {
+ double newX = selStart.VisualCharXPosition + cb.X;
+ selRect.Width -= (newX - selRect.X) - 10.0;
+ selRect.X = newX;
+ } else if (i == selEnd.Line)
+ selRect.Width = selEnd.VisualCharXPosition - selRect.X + cb.X;
+ else
+ selRect.Width += 10.0;
+
+ buff = sourceBytes.Slice(lines[i].Start, lines[i].Length);
+ int size = buff.Length * 4 + 1;
+ if (bytes.Length < size)
+ bytes = size > 512 ? new byte[size] : stackalloc byte[size];
+
+ int encodedBytes = Crow.Text.Encoding.ToUtf8 (buff, bytes);
+
+ gr.SetSource (SelectionBackground);
+ gr.Rectangle (selRect);
+ if (encodedBytes < 0)
+ gr.Fill ();
+ else {
+ gr.FillPreserve ();
+ gr.Save ();
+ gr.Clip ();
+ gr.SetSource (SelectionForeground);
+ gr.MoveTo (lineRect.X, lineRect.Y + fe.Ascent);
+ gr.ShowText (bytes.Slice (0, encodedBytes));
+ gr.Restore ();
+ }
+ Foreground.SetAsSource (IFace, gr);
+ }
+ }
- x = 0;
- pixX = 0;
-
- y++;
-
-
- /* } else if (tok2.Type == TokenType.Tabulation) {
- int spaceRounding = x % tabSize;
- int spaces = spaceRounding == 0 ?
- tabSize * tok2.Length :
- spaceRounding + tabSize * (tok2.Length - 1);
- x += spaces;
- pixX += spacePixelWidth * spaces;
- continue;
- } else if (tok2.Type == TokenType.WhiteSpace) {
- x += tok2.Length;
- pixX += spacePixelWidth * tok2.Length;*/
- }
- gr.Translate (ScrollX, ScrollY);
+ if (!multilineToken) {
+ if (++tokPtr >= source.Tokens.Length)
+ break;
+ tok = source.Tokens[tokPtr];
+ }
+
+ x = 0;
+ pixX = 0;
+
+ y++;
+
+
+ /* } else if (tok2.Type == TokenType.Tabulation) {
+ int spaceRounding = x % tabSize;
+ int spaces = spaceRounding == 0 ?
+ tabSize * tok2.Length :
+ spaceRounding + tabSize * (tok2.Length - 1);
+ x += spaces;
+ pixX += spacePixelWidth * spaces;
+ continue;
+ } else if (tok2.Type == TokenType.WhiteSpace) {
+ x += tok2.Length;
+ pixX += spacePixelWidth * tok2.Length;*/
+ }
+ gr.Translate (ScrollX, ScrollY);
+ }
+ } catch {
+
}
}
}
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