/// <summary>
/// Computes the layout of all visible text spans and stores them the
/// member variable 'visibleLines'. This includes a final partial item on the end.
/// </summary>
/// <param name="g"></param>
protected void ComputeLayout(Graphics g)
{
float cyLine = GetLineHeight();
this.visibleLines = new SortedList <float, LayoutLine>();
SizeF szClient = new SizeF(ClientSize);
var rcLine = new RectangleF(0, 0, szClient.Width, cyLine);
// Get the lines.
int cVisibleLines = (int)Math.Ceiling(szClient.Height / cyLine);
var lines = model != null?model.GetLineSpans(cVisibleLines) : new LineSpan[0];
int iLine = 0;
while (rcLine.Top < szClient.Height &&
iLine < lines.Length)
{
var line = lines[iLine];
var ll = new LayoutLine(line.Position)
{
Extent = rcLine,
Spans = ComputeSpanLayouts(line.TextSpans, rcLine, g)
};
this.visibleLines.Add(rcLine.Top, ll);
++iLine;
rcLine.Offset(0, cyLine);
}
}
private LayoutSpan FindSpan(Point ptClient, LayoutLine line)
{
foreach (var span in line.Spans)
{
if (span.ContentExtent.Contains(ptClient))
{
return(span);
}
}
return(null);
}
private RectangleF SpanPositionToClient(Graphics g, TextPointer pos, LayoutLine line, StyleStack styleStack)
{
var iSpan = pos.Span;
if (iSpan < 0 || iSpan >= line.Spans.Length)
{
return(line.Extent);
}
var span = line.Spans[iSpan];
return(CharPositionToClient(g, pos, span, styleStack));
}
private void PaintLine(LayoutLine line, Graphics g)
{
foreach (var span in line.Spans)
{
var text = span.Text;
var font = GetFont(span.Style);
var fg = GetForeground(span.Style);
var bg = GetBackground(span.Style);
g.FillRectangle(bg, span.Extent);
g.DrawString(text, font, fg, span.Extent, stringFormat);
}
}
private TextPointer FindSpanPosition(Graphics g, Point ptClient, LayoutLine line, StyleStack styleStack)
{
int iSpan = 0;
foreach (var span in line.Spans)
{
if (span.ContentExtent.Contains(ptClient))
{
int iChar = GetCharPosition(g, ptClient, span, styleStack);
return(new TextPointer(line.Position, iSpan, iChar));
}
++iSpan;
}
return(new TextPointer(line.Position, iSpan, 0));
}
public void AddLayoutLine(LineSpan line, ref RectangleF rcLine /* put in state */)
{
float cyLine = MeasureLineHeight(line);
rcLine.Height = cyLine;
var spans = ComputeSpanLayouts(line.TextSpans, rcLine);
var ll = new LayoutLine(line.Position)
{
Extent = LineExtent(rcLine, spans),
Spans = spans,
};
this.visibleLines.Add(rcLine.Top, ll);
rcLine.Offset(0, cyLine);
}
private TextPointer FindSpanPosition(Point ptClient, LayoutLine line)
{
int iSpan = 0;
foreach (var span in line.Spans)
{
if (span.Extent.Contains(ptClient))
{
int iChar = GetCharPosition(ptClient, span);
return(new TextPointer
{
Line = line.Position,
Span = iSpan,
Character = iChar
});
}
++iSpan;
}
return(new TextPointer {
Line = line.Position, Span = iSpan, Character = 0
});
}
private void PaintLine(LayoutLine line)
{
this.line = line;
// Paint the last piece of the line
RectangleF rcTrailer = line.Extent;
float xMax = 0;
if (line.Spans.Length > 0)
{
xMax = line.Spans[line.Spans.Length - 1].ContentExtent.Right;
}
var cx = extent.Width - xMax;
if (cx > 0)
{
rcTrailer.X = xMax;
rcTrailer.Width = cx;
graphics.FillRectangle(
styleStack.GetBackground(defaultBgColor),
rcTrailer);
}
for (int iSpan = 0; iSpan < line.Spans.Length; ++iSpan)
{
this.span = line.Spans[iSpan];
this.styleStack.PushStyle(span.Style);
var pos = new TextPointer(line.Position, iSpan, 0);
var insideSelection =
outer.ComparePositions(selStart, pos) <= 0 &&
outer.ComparePositions(pos, selEnd) < 0;
this.fg = styleStack.GetForegroundColor(defaultFgColor);
this.bg = styleStack.GetBackground(defaultBgColor);
this.font = styleStack.GetFont(defaultFont);
this.rcContent = span.ContentExtent;
this.rcTotal = span.PaddedExtent;
if (!insideSelection)
{
if (selStart.Line == line.Position && selStart.Span == iSpan)
{
// Selection starts inside the current span. Write
// any unselected text first.
if (selStart.Character > 0)
{
DrawTextSegment(0, selStart.Character, false);
}
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(selStart.Character, selEnd.Character - selStart.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
// Select all the way to the end of the span.
DrawTrailingTextSegment(selStart.Character, true);
}
}
else
{
// Not in selection at all.
DrawText(span.Text, false);
}
}
else
{
// Inside selection. Does it end?
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(0, selEnd.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
DrawText(span.Text, true);
}
}
#if DEBUG
var text = span.Text;
if (line.Position == selStart.Line &&
iSpan == selStart.Span)
{
var textFrag = text.Substring(0, selStart.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Red,
span.ContentExtent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
if (line.Position == selEnd.Line &&
iSpan == selEnd.Span)
{
var textFrag = text.Substring(0, selEnd.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Blue,
span.ContentExtent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
#endif
styleStack.PopStyle();
}
}
private TextPointer FindSpanPosition(Point ptClient, LayoutLine line)
{
int iSpan = 0;
foreach (var span in line.Spans)
{
if (span.Extent.Contains(ptClient))
{
int iChar = GetCharPosition(ptClient, span);
return new TextPointer
{
Line = line.Position,
Span = iSpan,
Character = iChar
};
}
++iSpan;
}
return new TextPointer { Line = line.Position, Span = iSpan, Character = 0 };
}
private LayoutSpan FindSpan(Point ptClient, LayoutLine line)
{
foreach (var span in line.Spans)
{
if (span.Extent.Contains(ptClient))
return span;
}
return null;
}
/// <summary>
/// Computes the layout of all visible text spans and stores them the
/// member variable 'visibleLines'. This includes a final partial item on the end.
/// </summary>
/// <param name="g"></param>
protected void ComputeLayout(Graphics g)
{
GetStyleStack().PushStyle(StyleClass);
this.visibleLines = new SortedList<float, LayoutLine>();
SizeF szClient = new SizeF(ClientSize);
var rcLine = new RectangleF(0, 0, szClient.Width, 0);
// Get the lines.
object oldPos = null;
var m = model ?? new EmptyEditorModel();
oldPos = model.CurrentPosition;
var lines = m.GetLineSpans(1);
while (rcLine.Top < szClient.Height &&
lines != null && lines.Length == 1)
{
var line = lines[0];
float cyLine = MeasureLineHeight(line);
rcLine.Height = cyLine;
var ll = new LayoutLine(line.Position) {
Extent = rcLine,
Spans = ComputeSpanLayouts(line.TextSpans, rcLine, g)
};
this.visibleLines.Add(rcLine.Top, ll);
lines = m.GetLineSpans(1);
rcLine.Offset(0, cyLine);
}
GetStyleStack().PopStyle();
model.MoveToLine(oldPos, 0);
}
/// <summary>
/// Computes the layout of all visible text spans and stores them the
/// member variable 'visibleLines'. This includes a final partial item on the end.
/// </summary>
/// <param name="g"></param>
protected void ComputeLayout(Graphics g)
{
float cyLine = GetLineHeight();
this.visibleLines = new SortedList<float, LayoutLine>();
SizeF szClient = new SizeF(ClientSize);
var rcLine = new RectangleF(0, 0, szClient.Width, cyLine);
// Get the lines.
int cVisibleLines = (int) Math.Ceiling(szClient.Height / cyLine);
var lines = model != null ? model.GetLineSpans(cVisibleLines) : new LineSpan[0];
int iLine = 0;
while (rcLine.Top < szClient.Height &&
iLine < lines.Length)
{
var line = lines[iLine];
var ll = new LayoutLine(line.Position) {
Extent = rcLine,
Spans = ComputeSpanLayouts(line.TextSpans, rcLine, g)
};
this.visibleLines.Add(rcLine.Top, ll);
++iLine;
rcLine.Offset(0, cyLine);
}
}
public void AddLayoutLine(LineSpan line, ref RectangleF rcLine /* put in state */)
{
float cyLine = MeasureLineHeight(line);
rcLine.Height = cyLine;
var spans = ComputeSpanLayouts(line.TextSpans, rcLine);
var ll = new LayoutLine(line.Position)
{
Extent = LineExtent(rcLine, spans),
Spans = spans,
};
this.visibleLines.Add(rcLine.Top, ll);
rcLine.Offset(0, cyLine);
}
private RectangleF SpanPositionToClient(Graphics g, TextPointer pos, LayoutLine line, StyleStack styleStack)
{
var iSpan = pos.Span;
if (iSpan < 0 || iSpan >= line.Spans.Length)
return line.Extent;
var span = line.Spans[iSpan];
return CharPositionToClient(g, pos, span, styleStack);
}
private TextPointer FindSpanPosition(Graphics g, Point ptClient, LayoutLine line, StyleStack styleStack)
{
int iSpan = 0;
foreach (var span in line.Spans)
{
if (span.ContentExtent.Contains(ptClient))
{
int iChar = GetCharPosition(g, ptClient, span, styleStack);
return new TextPointer
{
Line = line.Position,
Span = iSpan,
Character = iChar
};
}
++iSpan;
}
return new TextPointer { Line = line.Position, Span = iSpan, Character = 0 };
}
private void PaintLine(LayoutLine line)
{
for (int iSpan = 0; iSpan < line.Spans.Length; ++iSpan)
{
this.span = line.Spans[iSpan];
var pos = new TextPointer { Line = line.Position, Span = iSpan, Character = 0 };
var insideSelection =
outer.ComparePositions(selStart, pos) <= 0 &&
outer.ComparePositions(pos, selEnd) < 0;
this.fg = outer.GetForegroundColor(span.Style);
this.bg = outer.GetBackground(span.Style);
this.font = outer.GetFont(span.Style);
this.rcText = span.Extent;
if (!insideSelection)
{
if (selStart.Line == line.Position && selStart.Span == iSpan)
{
// Selection starts inside the current span. Write
// any unselected text first.
if (selStart.Character > 0)
{
DrawTextSegment(0, selStart.Character, false);
}
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(selStart.Character, selEnd.Character - selStart.Character, true);
if (selEnd.Character < span.Text.Length)
{
// If there is trailing unselected text, display that.
DrawTrailingTextSegment(selEnd.Character, false);
}
}
else
{
// Select all the way to the end of the span.
DrawTrailingTextSegment(selStart.Character, true);
}
}
else
{
// Not in selection at all.
DrawText(span.Text, false);
}
}
else
{
// Inside selection. Does it end?
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(0, selEnd.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
DrawText(span.Text, true);
}
}
#if DEBUG
var text = span.Text;
if (line.Position == selStart.Line &&
iSpan == selStart.Span)
{
var textFrag = text.Substring(0, selStart.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Red,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
if (line.Position == selEnd.Line &&
iSpan == selEnd.Span)
{
var textFrag = text.Substring(0, selEnd.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Blue,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
#endif
}
}
private void PaintLine(LayoutLine line)
{
// Paint the last piece of the line
RectangleF rcTrailer = line.Extent;
float xMax = 0;
if (line.Spans.Length > 0)
{
xMax = line.Spans[line.Spans.Length - 1].Extent.Right;
}
var cx = outer.ClientRectangle.Right - xMax;
if (cx > 0)
{
rcTrailer.X = xMax;
rcTrailer.Width = cx;
graphics.FillRectangle(
styleStack.GetBackground(outer),
rcTrailer);
}
for (int iSpan = 0; iSpan < line.Spans.Length; ++iSpan)
{
this.span = line.Spans[iSpan];
this.styleStack.PushStyle(span.Style);
var pos = new TextPointer { Line = line.Position, Span = iSpan, Character = 0 };
var insideSelection =
outer.ComparePositions(selStart, pos) <= 0 &&
outer.ComparePositions(pos, selEnd) < 0;
this.fg = styleStack.GetForegroundColor(outer);
this.bg = styleStack.GetBackground(outer);
this.font = styleStack.GetFont(outer);
this.rcText = span.Extent;
if (!insideSelection)
{
if (selStart.Line == line.Position && selStart.Span == iSpan)
{
// Selection starts inside the current span. Write
// any unselected text first.
if (selStart.Character > 0)
{
DrawTextSegment(0, selStart.Character, false);
}
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(selStart.Character, selEnd.Character - selStart.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
// Select all the way to the end of the span.
DrawTrailingTextSegment(selStart.Character, true);
}
}
else
{
// Not in selection at all.
DrawText(span.Text, false);
}
}
else
{
// Inside selection. Does it end?
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(0, selEnd.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
DrawText(span.Text, true);
}
}
#if DEBUG
var text = span.Text;
if (line.Position == selStart.Line &&
iSpan == selStart.Span)
{
var textFrag = text.Substring(0, selStart.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Red,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
if (line.Position == selEnd.Line &&
iSpan == selEnd.Span)
{
var textFrag = text.Substring(0, selEnd.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Blue,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
#endif
styleStack.PopStyle();
}
}
private void PaintLine(LayoutLine line)
{
for (int iSpan = 0; iSpan < line.Spans.Length; ++iSpan)
{
this.span = line.Spans[iSpan];
var pos = new TextPointer {
Line = line.Position, Span = iSpan, Character = 0
};
var insideSelection =
outer.ComparePositions(selStart, pos) <= 0 &&
outer.ComparePositions(pos, selEnd) < 0;
this.fg = outer.GetForegroundColor(span.Style);
this.bg = outer.GetBackground(span.Style);
this.font = outer.GetFont(span.Style);
this.rcText = span.Extent;
if (!insideSelection)
{
if (selStart.Line == line.Position && selStart.Span == iSpan)
{
// Selection starts inside the current span. Write
// any unselected text first.
if (selStart.Character > 0)
{
DrawTextSegment(0, selStart.Character, false);
}
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(selStart.Character, selEnd.Character - selStart.Character, true);
if (selEnd.Character < span.Text.Length)
{
// If there is trailing unselected text, display that.
DrawTrailingTextSegment(selEnd.Character, false);
}
}
else
{
// Select all the way to the end of the span.
DrawTrailingTextSegment(selStart.Character, true);
}
}
else
{
// Not in selection at all.
DrawText(span.Text, false);
}
}
else
{
// Inside selection. Does it end?
if (selEnd.Line == line.Position && selEnd.Span == iSpan)
{
// Selection ends inside the current span. Write
// selected text.
DrawTextSegment(0, selEnd.Character, true);
DrawTrailingTextSegment(selEnd.Character, false);
}
else
{
DrawText(span.Text, true);
}
}
#if DEBUG
var text = span.Text;
if (line.Position == selStart.Line &&
iSpan == selStart.Span)
{
var textFrag = text.Substring(0, selStart.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Red,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
if (line.Position == selEnd.Line &&
iSpan == selEnd.Span)
{
var textFrag = text.Substring(0, selEnd.Character);
var sz = outer.MeasureText(graphics, textFrag, font);
graphics.FillRectangle(
Brushes.Blue,
span.Extent.Left + sz.Width, line.Extent.Top,
1, line.Extent.Height);
}
#endif
}
}
private void PaintLine(LayoutLine line, Graphics g)
{
foreach (var span in line.Spans)
{
var text = span.Text;
var font = GetFont(span.Style);
var fg = GetForeground(span.Style);
var bg = GetBackground(span.Style);
g.FillRectangle(bg, span.Extent);
g.DrawString(text, font, fg, span.Extent, stringFormat);
}
}