protected override void OnRender(DrawingContext drawingContext)
{
if (TextView != null && TextView.VisualLinesValid && m_Settings.AssemblyEditorSettings.ShowClockCycles)
{
if (m_Analyzer.InterPretedAssemblyRows != null)
{
var interpretedz80Instructions = m_Analyzer.InterPretedAssemblyRows
.Where(ar => ar.Instruction.Type == Z80.Kernel.Z80Assembler.InstructionType.ProcessorInstruction)
.Select(ar => ar);
m_TextColor = new SolidColorBrush(m_Settings.AssemblyEditorSettings.ClockCycleColor.Color);
foreach (AssemblyRow assemblyRow in interpretedz80Instructions)
{
VisualLine line = TextView.VisualLines.FirstOrDefault(vl =>
vl.FirstDocumentLine.LineNumber == assemblyRow.RowNumber);
if (line != null)
{
FormattedText text = new FormattedText($"[{assemblyRow.ClockCycles}]",
CultureInfo.CurrentCulture,
FlowDirection.LeftToRight,
new Typeface("")
,
m_EmSize,
m_TextColor);
double y = line.GetTextLineVisualYPosition(line.TextLines[0], VisualYPosition.LineTop);
double x = line.GetTextLineVisualXPosition(line.TextLines[0],
line.GetTextLineVisualStartColumn(line.TextLines[0]));
drawingContext.DrawText(text, new Point(x, y - TextView.VerticalOffset));
}
}
}
}
}
static double GetXPos(TextArea textArea, TextViewPosition pos)
{
DocumentLine documentLine = textArea.Document.GetLineByNumber(pos.Line);
VisualLine visualLine = textArea.TextView.GetOrConstructVisualLine(documentLine);
int vc = visualLine.ValidateVisualColumn(pos, true);
TextLine textLine = visualLine.GetTextLine(vc);
return(visualLine.GetTextLineVisualXPosition(textLine, vc));
}
Rect CalcCaretOverstrikeRectangle(VisualLine visualLine)
{
if (!visualColumnValid)
{
RevalidateVisualColumn(visualLine);
}
int currentPos = position.VisualColumn;
// The text being overwritten in overstrike mode is everything up to the next normal caret stop
int nextPos = visualLine.GetNextCaretPosition(currentPos, LogicalDirection.Forward, CaretPositioningMode.Normal, true);
TextLine textLine = visualLine.GetTextLine(currentPos);
Rect r;
if (currentPos < visualLine.VisualLength)
{
// If the caret is within the text, use GetTextBounds() for the text being overwritten.
// This is necessary to ensure the rectangle is calculated correctly in bidirectional text.
var textBounds = textLine.GetTextBounds(currentPos, nextPos - currentPos)[0];
r = textBounds.Rectangle;
r.Y += visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.LineTop);
}
else
{
// If the caret is at the end of the line (or in virtual space),
// use the visual X position of currentPos and nextPos (one or more of which will be in virtual space)
double xPos = visualLine.GetTextLineVisualXPosition(textLine, currentPos);
double xPos2 = visualLine.GetTextLineVisualXPosition(textLine, nextPos);
double lineTop = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.TextTop);
double lineBottom = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.TextBottom);
r = new Rect(xPos, lineTop, xPos2 - xPos, lineBottom - lineTop);
}
// If the caret is too small (e.g. in front of zero-width character), ensure it's still visible
if (r.Width < SystemParameters.CaretWidth)
{
r.Width = SystemParameters.CaretWidth;
}
return(r);
}
Rect CalcCaretRectangle(VisualLine visualLine)
{
if (!visualColumnValid)
{
RevalidateVisualColumn(visualLine);
}
TextLine textLine = visualLine.GetTextLine(position.VisualColumn);
double xPos = visualLine.GetTextLineVisualXPosition(textLine, position.VisualColumn);
double lineTop = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.TextTop);
double lineBottom = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.TextBottom);
return(new Rect(xPos, lineTop, SystemParameters.CaretWidth, lineBottom - lineTop));
}
static void MoveCaretUpDown(TextArea textArea, CaretMovementType direction, VisualLine visualLine, TextLine textLine, int caretVisualColumn)
{
// moving up/down happens using the desired visual X position
double xPos = textArea.Caret.DesiredXPos;
if (double.IsNaN(xPos))
{
xPos = visualLine.GetTextLineVisualXPosition(textLine, caretVisualColumn);
}
// now find the TextLine+VisualLine where the caret will end up in
VisualLine targetVisualLine = visualLine;
TextLine targetLine;
int textLineIndex = visualLine.TextLines.IndexOf(textLine);
switch (direction)
{
case CaretMovementType.LineUp:
{
// Move up: move to the previous TextLine in the same visual line
// or move to the last TextLine of the previous visual line
int prevLineNumber = visualLine.FirstDocumentLine.LineNumber - 1;
if (textLineIndex > 0)
{
targetLine = visualLine.TextLines[textLineIndex - 1];
}
else if (prevLineNumber >= 1)
{
DocumentLine prevLine = textArea.Document.GetLineByNumber(prevLineNumber);
targetVisualLine = textArea.TextView.GetOrConstructVisualLine(prevLine);
targetLine = targetVisualLine.TextLines[targetVisualLine.TextLines.Count - 1];
}
else
{
targetLine = null;
}
break;
}
case CaretMovementType.LineDown:
{
// Move down: move to the next TextLine in the same visual line
// or move to the first TextLine of the next visual line
int nextLineNumber = visualLine.LastDocumentLine.LineNumber + 1;
if (textLineIndex < visualLine.TextLines.Count - 1)
{
targetLine = visualLine.TextLines[textLineIndex + 1];
}
else if (nextLineNumber <= textArea.Document.LineCount)
{
DocumentLine nextLine = textArea.Document.GetLineByNumber(nextLineNumber);
targetVisualLine = textArea.TextView.GetOrConstructVisualLine(nextLine);
targetLine = targetVisualLine.TextLines[0];
}
else
{
targetLine = null;
}
break;
}
case CaretMovementType.PageUp:
case CaretMovementType.PageDown:
{
// Page up/down: find the target line using its visual position
double yPos = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.LineMiddle);
if (direction == CaretMovementType.PageUp)
{
yPos -= textArea.TextView.RenderSize.Height;
}
else
{
yPos += textArea.TextView.RenderSize.Height;
}
DocumentLine newLine = textArea.TextView.GetDocumentLineByVisualTop(yPos);
targetVisualLine = textArea.TextView.GetOrConstructVisualLine(newLine);
targetLine = targetVisualLine.GetTextLineByVisualYPosition(yPos);
break;
}
default:
throw new NotSupportedException(direction.ToString());
}
if (targetLine != null)
{
double yPos = targetVisualLine.GetTextLineVisualYPosition(targetLine, VisualYPosition.LineMiddle);
int newVisualColumn = targetVisualLine.GetVisualColumn(new Point(xPos, yPos), textArea.Selection.EnableVirtualSpace);
SetCaretPosition(textArea, targetVisualLine, targetLine, newVisualColumn, false);
textArea.Caret.DesiredXPos = xPos;
}
}
static TextViewPosition GetUpDownCaretPosition(TextView textView, TextViewPosition caretPosition, CaretMovementType direction, VisualLine visualLine, TextLine textLine, bool enableVirtualSpace, ref double xPos)
{
// moving up/down happens using the desired visual X position
if (double.IsNaN(xPos))
{
xPos = visualLine.GetTextLineVisualXPosition(textLine, caretPosition.VisualColumn);
}
// now find the TextLine+VisualLine where the caret will end up in
VisualLine targetVisualLine = visualLine;
TextLine targetLine;
int textLineIndex = visualLine.TextLines.IndexOf(textLine);
switch (direction)
{
case CaretMovementType.LineUp:
{
// Move up: move to the previous TextLine in the same visual line
// or move to the last TextLine of the previous visual line
int prevLineNumber = visualLine.FirstDocumentLine.LineNumber - 1;
if (textLineIndex > 0)
{
targetLine = visualLine.TextLines[textLineIndex - 1];
}
else if (prevLineNumber >= 1)
{
DocumentLine prevLine = textView.Document.GetLineByNumber(prevLineNumber);
targetVisualLine = textView.GetOrConstructVisualLine(prevLine);
targetLine = targetVisualLine.TextLines[targetVisualLine.TextLines.Count - 1];
}
else
{
targetLine = null;
}
break;
}
case CaretMovementType.LineDown:
{
// Move down: move to the next TextLine in the same visual line
// or move to the first TextLine of the next visual line
int nextLineNumber = visualLine.LastDocumentLine.LineNumber + 1;
if (textLineIndex < visualLine.TextLines.Count - 1)
{
targetLine = visualLine.TextLines[textLineIndex + 1];
}
else if (nextLineNumber <= textView.Document.LineCount)
{
DocumentLine nextLine = textView.Document.GetLineByNumber(nextLineNumber);
targetVisualLine = textView.GetOrConstructVisualLine(nextLine);
targetLine = targetVisualLine.TextLines[0];
}
else
{
targetLine = null;
}
break;
}
case CaretMovementType.PageUp:
case CaretMovementType.PageDown:
{
// Page up/down: find the target line using its visual position
double yPos = visualLine.GetTextLineVisualYPosition(textLine, VisualYPosition.LineMiddle);
if (direction == CaretMovementType.PageUp)
{
yPos -= textView.RenderSize.Height;
}
else
{
yPos += textView.RenderSize.Height;
}
DocumentLine newLine = textView.GetDocumentLineByVisualTop(yPos);
targetVisualLine = textView.GetOrConstructVisualLine(newLine);
targetLine = targetVisualLine.GetTextLineByVisualYPosition(yPos);
break;
}
default:
throw new NotSupportedException(direction.ToString());
}
if (targetLine != null)
{
double yPos = targetVisualLine.GetTextLineVisualYPosition(targetLine, VisualYPosition.LineMiddle);
int newVisualColumn = targetVisualLine.GetVisualColumn(new Point(xPos, yPos), enableVirtualSpace);
// prevent wrapping to the next line; TODO: could 'IsAtEnd' help here?
int targetLineStartCol = targetVisualLine.GetTextLineVisualStartColumn(targetLine);
if (newVisualColumn >= targetLineStartCol + targetLine.Length)
{
if (newVisualColumn <= targetVisualLine.VisualLength)
{
newVisualColumn = targetLineStartCol + targetLine.Length - 1;
}
}
return(targetVisualLine.GetTextViewPosition(newVisualColumn));
}
else
{
return(caretPosition);
}
}
