public SyntaxHighlightTextBox()
{
InitializeComponent();
MaxLineCountInBlock = 100;
LineHeight = FontSize * 1.3;
_totalLineCount = 1;
_blocks = new List <InnerTextBlock>();
this.TextBox1.Loaded += (s, e) =>
{
_renderCanvas = (DrawingControl)TextBox1.Template.FindName("PART_RenderCanvas", this.TextBox1);
_lineNumbersCanvas = (DrawingControl)TextBox1.Template.FindName("PART_LineNumbersCanvas", this.TextBox1);
var scrollViewer = (ScrollViewer)TextBox1.Template.FindName("PART_ContentHost", this.TextBox1);
_lineNumbersSeparator = (Line)TextBox1.Template.FindName("lineNumbersSeparator", this.TextBox1);
if (_lineNumbersCanvas != null)
{
_lineNumbersCanvas.Width = GetFormattedTextWidth(string.Format("{0:0000}", _totalLineCount)) + 5;
}
scrollViewer.ScrollChanged += onScrollChanged;
invalidateBlocks(0);
InvalidateVisual();
};
SizeChanged += (s, e) =>
{
if (e.HeightChanged == false)
{
return;
}
updateBlocks();
InvalidateVisual();
};
this.TextBox1.TextChanged += (s, e) =>
{
updateTotalLineCount();
invalidateBlocks(e.Changes.First().Offset);
InvalidateVisual();
};
}
public SyntaxHighlightTextBox()
{
InitializeComponent();
MaxLineCountInBlock = 100;
LineHeight = FontSize * 1.3;
_totalLineCount = 1;
_blocks = new List<InnerTextBlock>();
this.TextBox1.Loaded += (s, e) =>
{
_renderCanvas = (DrawingControl)TextBox1.Template.FindName("PART_RenderCanvas", this.TextBox1);
_lineNumbersCanvas = (DrawingControl)TextBox1.Template.FindName("PART_LineNumbersCanvas", this.TextBox1);
var scrollViewer = (ScrollViewer)TextBox1.Template.FindName("PART_ContentHost", this.TextBox1);
_lineNumbersSeparator = (Line)TextBox1.Template.FindName("lineNumbersSeparator", this.TextBox1);
if (_lineNumbersCanvas != null)
_lineNumbersCanvas.Width = GetFormattedTextWidth(string.Format("{0:0000}", _totalLineCount)) + 5;
scrollViewer.ScrollChanged += onScrollChanged;
invalidateBlocks(0);
InvalidateVisual();
};
SizeChanged += (s, e) =>
{
if (e.HeightChanged == false)
return;
updateBlocks();
InvalidateVisual();
};
this.TextBox1.TextChanged += (s, e) =>
{
updateTotalLineCount();
invalidateBlocks(e.Changes.First().Offset);
InvalidateVisual();
};
}