public void Reset()
{
m_lines.Clear();
_bitrateGraphCanvas.IfNotNull(i => i.Children.Clear());
m_currentBitrateGraph = new BitrateGraph(new SolidColorBrush(Colors.Red));
m_highestPlayableGraph = new BitrateGraph(new SolidColorBrush(Colors.Green));
}
private void RepaintGraph(BitrateGraph graph, ulong bitrate)
{
// Do we have a current graph line yet? If not,
// then we haven't started displaying anything,
// so just create the first line and get out
if (graph.CurrentLine == null)
{
graph.LastBitrate = bitrate;
graph.CurrentLine = CreateGraphLine(knBitrateGraphLineMinX, ComputeBitrateGraphValue(bitrate),
knBitrateGraphLineMinX, ComputeBitrateGraphValue(bitrate), graph.Color);
// Add the line to our canvas
_bitrateGraphCanvas.Children.Add(graph.CurrentLine);
return;
}
// Has our frame rate value changed?
if (graph.LastBitrate != bitrate)
{
// Our frame rate value has changed, so we need to draw a
// new vertical line connecting the old value to the new value,
// and then draw a new horizontal line representing the new value.
// First, the horizontal line.
Line horizontalLine = CreateGraphLine(graph.CurrentLine.X2, ComputeBitrateGraphValue(bitrate),
graph.CurrentLine.X2, ComputeBitrateGraphValue(bitrate), graph.Color);
// Add the line to our canvas
_bitrateGraphCanvas.Children.Add(horizontalLine);
// Now create the new vertical line
Line verticalLine = CreateGraphLine(graph.CurrentLine.X2, graph.CurrentLine.Y1,
graph.CurrentLine.X2, horizontalLine.Y1, graph.Color);
// Add this line to our canvas
_bitrateGraphCanvas.Children.Add(verticalLine);
// The current line becomes the horizontal line
graph.CurrentLine = horizontalLine;
}
else
{
// Our frame rate has not changed from our last repaint,
// so increment the X value of our current line.
if (graph.CurrentLine.X2 < knBitrateGraphLineMaxX)
{
graph.CurrentLine.X2++;
}
else
{
// Our current line has gone over our maximum x value,
// so let's walk over all the lines and collapse any that have fallen off the
// minimum X value of our graph
foreach (Line graphLine in m_lines)
{
if ((graphLine != null) && (graphLine.Visibility == Visibility.Visible))
{
if (graphLine.X1 > knBitrateGraphLineMinX)
{
graphLine.X1--;
}
if (graphLine.X2 > knBitrateGraphLineMinX)
{
graphLine.X2--;
}
else
{
graphLine.Visibility = Visibility.Collapsed;
}
}
}
graph.CurrentLine.X2++;
}
}
// Remember our fps for the next go around
graph.LastBitrate = bitrate;
}
public void Reset()
{
m_lines.Clear();
_bitrateGraphCanvas.IfNotNull(i => i.Children.Clear());
m_currentBitrateGraph = new BitrateGraph(new SolidColorBrush(Colors.Red));
m_highestPlayableGraph = new BitrateGraph(new SolidColorBrush(Colors.Green));
}
private void RepaintGraph(BitrateGraph graph, ulong bitrate)
{
// Do we have a current graph line yet? If not,
// then we haven't started displaying anything,
// so just create the first line and get out
if (graph.CurrentLine == null)
{
graph.LastBitrate = bitrate;
graph.CurrentLine = CreateGraphLine(knBitrateGraphLineMinX, ComputeBitrateGraphValue(bitrate),
knBitrateGraphLineMinX, ComputeBitrateGraphValue(bitrate), graph.Color);
// Add the line to our canvas
_bitrateGraphCanvas.Children.Add(graph.CurrentLine);
return;
}
// Has our frame rate value changed?
if (graph.LastBitrate != bitrate)
{
// Our frame rate value has changed, so we need to draw a
// new vertical line connecting the old value to the new value,
// and then draw a new horizontal line representing the new value.
// First, the horizontal line.
Line horizontalLine = CreateGraphLine(graph.CurrentLine.X2, ComputeBitrateGraphValue(bitrate),
graph.CurrentLine.X2, ComputeBitrateGraphValue(bitrate), graph.Color);
// Add the line to our canvas
_bitrateGraphCanvas.Children.Add(horizontalLine);
// Now create the new vertical line
Line verticalLine = CreateGraphLine(graph.CurrentLine.X2, graph.CurrentLine.Y1,
graph.CurrentLine.X2, horizontalLine.Y1, graph.Color);
// Add this line to our canvas
_bitrateGraphCanvas.Children.Add(verticalLine);
// The current line becomes the horizontal line
graph.CurrentLine = horizontalLine;
}
else
{
// Our frame rate has not changed from our last repaint,
// so increment the X value of our current line.
if (graph.CurrentLine.X2 < knBitrateGraphLineMaxX)
{
graph.CurrentLine.X2++;
}
else
{
// Our current line has gone over our maximum x value,
// so let's walk over all the lines and collapse any that have fallen off the
// minimum X value of our graph
foreach (Line graphLine in m_lines)
{
if ((graphLine != null) && (graphLine.Visibility == Visibility.Visible))
{
if (graphLine.X1 > knBitrateGraphLineMinX)
{
graphLine.X1--;
}
if (graphLine.X2 > knBitrateGraphLineMinX)
{
graphLine.X2--;
}
else
{
graphLine.Visibility = Visibility.Collapsed;
}
}
}
graph.CurrentLine.X2++;
}
}
// Remember our fps for the next go around
graph.LastBitrate = bitrate;
}
