private void AddLineFor(FrameRecordViewModel newBreak, FrameRecordViewModel previous)
{
var line = new Line();
// Let's try making this a little thicker so it's easier to read, but transparent so it shows some of the lines behind it
byte alpha = 100;
Brush brush = new SolidColorBrush(Color.FromArgb(alpha, 0, 0, 0));
line.Stroke = brush;
line.StrokeThickness = 5;
line.X1 = 0;
line.X2 = ViewModel.TimeToX(newBreak.Time);
line.Y1 = CountToY(newBreak.RenderBreaks.Count);
line.Y2 = line.Y1;
if (line.X2 > MainCanvas.Width || double.IsNaN(MainCanvas.Width))
{
MainCanvas.Width = line.X2;
this.ScrollViewer.ScrollToRightEnd();
}
if (previous != null)
{
line.X1 = ViewModel.TimeToX(previous.Time);
line.Y1 = CountToY(previous.RenderBreaks.Count);
}
lineList.Add(line);
this.MainCanvas.Children.Add(line);
}
private void HandleRenderBreaksAdded(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
var collection = ViewModel.RecordedFrames;
FrameRecordViewModel newFrame = null;
FrameRecordViewModel previousFrame = null;
if (collection.Count > 0)
{
newFrame = collection.Last();
}
if (collection.Count > 1)
{
previousFrame = collection[collection.Count - 2];
}
if (previousFrame != null && previousFrame.RenderBreaks.Count != newFrame.RenderBreaks.Count)
{
lineDrawingState = LineDrawingState.NeedsToDrawDiagonalLine;
}
bool needsNewLine = lineDrawingState == LineDrawingState.NeedsToDrawDiagonalLine || lineDrawingState == LineDrawingState.NeedsToCreateHorizontalLine;
if (needsNewLine)
{
if (lineDrawingState == LineDrawingState.NeedsToDrawDiagonalLine)
{
lineDrawingState = LineDrawingState.NeedsToCreateHorizontalLine;
}
else if (lineDrawingState == LineDrawingState.NeedsToCreateHorizontalLine)
{
lineDrawingState = LineDrawingState.IsExtendingHorizontalLine;
}
AddLineFor(newFrame, previousFrame);
}
else
{
ExtendExistingLineFor(newFrame);
}
}
private void ExtendExistingLineFor(FrameRecordViewModel newFrame)
{
var lastLine = lineList.LastOrDefault();
if (lastLine != null)
{
lastLine.X2 = ViewModel.TimeToX(newFrame.Time);
lastLine.Y2 = CountToY(newFrame.RenderBreaks.Count);
if (double.IsNaN(MainCanvas.Height) || lastLine.Y2 > MainCanvas.Height)
{
MainCanvas.Height = lastLine.Y2;
}
if (lastLine.X2 > MainCanvas.Width || double.IsNaN(MainCanvas.Width))
{
MainCanvas.Width = lastLine.X2;
this.ScrollViewer.ScrollToRightEnd();
}
}
}
