public VisibleBlock(ISemanticBlockTag tag, double x, double yTop, double yBottom)
{
this.tag = tag;
this.x = x;
this.yTop = yTop;
this.yBottom = yBottom;
}
public bool UpdateTip(IVerticalScrollBar margin, MouseEventArgs e, ToolTip tip)
{
if ((!_textView.IsClosed) && (_tagger != null) && _previewEnabled)
{
Point pt = e.GetPosition(this);
if ((pt.X >= 0.0) && (pt.X <= this.Width))
{
SnapshotPoint position = _scrollBar.GetBufferPositionOfYCoordinate(pt.Y);
ISemanticBlockTag deepestTag = null;
var tags = _tagger.GetTags(new SnapshotSpan(position, 0));
foreach (var tagSpan in tags)
{
if (tagSpan.Tag.Type != BlockType.Unknown)
{
if ((deepestTag == null) || (tagSpan.Tag.Level > deepestTag.Level))
{
deepestTag = tagSpan.Tag;
}
}
}
if (deepestTag != null)
{
if (tip.IsOpen)
{
var existingContext = tip.Content as FrameworkElement;
if ((existingContext != null) && (existingContext.Tag == deepestTag))
{
// No changes from the last time we opened the tip.
return(true);
}
}
FrameworkElement context = deepestTag.Context(_coloring,
_textView.FormattedLineSource.DefaultTextProperties);
context.Tag = deepestTag;
//The width of the view is in zoomed coordinates so factor the zoom factor into the tip window width computation.
double zoom = _textView.ZoomLevel / 100.0;
tip.MinWidth = tip.MaxWidth = Math.Floor(Math.Max(50.0, _textView.ViewportWidth * zoom * 0.5));
tip.MinHeight = tip.MaxHeight = context.Height + 12.0;
tip.Content = context;
tip.IsOpen = true;
StructureMarginElement.LogTipOpened("VS/PPT-Structure/MarginTipOpened", context);
return(true);
}
}
}
return(false);
}
private void CreateBlockAdornment(ISemanticBlockTag tag, SnapshotSpan span, double x, double yTop, double yBottom)
{
LineGeometry line = new LineGeometry(new Point(x, yTop), new Point(x, yBottom));
GeometryDrawing drawing = new GeometryDrawing(null, _coloring.GetLinePen(tag), line);
drawing.Freeze();
DrawingImage drawingImage = new DrawingImage(drawing);
drawingImage.Freeze();
Image image = new Image();
image.Source = drawingImage;
VisibleBlock block = new VisibleBlock(tag, x, yTop, yBottom);
Canvas.SetLeft(image, x);
Canvas.SetTop(image, yTop);
_layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, block, image, OnAdornmentRemoved);
_visibleBlocks.Add(block);
}
public Brush GetToolTipBrush(ISemanticBlockTag tag)
{
return(this.GetColoring(tag.Type).ToolTipBrush);
}
public Brush GetLineBrush(ISemanticBlockTag tag)
{
return(this.GetColoring(tag.Type).LineBrush);
}
public Pen GetLinePen(ISemanticBlockTag tag)
{
return(this.GetColoring(tag.Type).LinePen);
}
public Pen GetToolTipPen(ISemanticBlockTag tag)
{
return(this.GetColoring(tag.Type).ToolTipPen);
}
