/// <summary>
/// Update the <see cref="chart_filters"/> to reflect the gains of the filters.
/// </summary>
/// <seealso cref="UpdateAll"/>
private void UpdateEqualizerGraph()
{
//
// update the series
//
// get the list of filters
SortedList <double, Filter> filters = eqAPI.GetFilters();
// update the equalizer series
chart_filters.Series.Clear();
System.Windows.Forms.DataVisualization.Charting.Series series =
chart_filters.Series.Add("frequencies");
foreach (System.Collections.Generic.KeyValuePair <double, Filter> pair in filters)
{
Filter filter = pair.Value;
series.Points.Add(filter.Gain);
}
//
// change the equalizer graph visually
//
// make it a line graph instead of bar graph
series.ChartType =
System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
// set the range of the axis
double gainMax = equalizerapo_api.GAIN_MAX;
System.Windows.Forms.DataVisualization.Charting.Axis yaxis =
chart_filters.ChartAreas["ChartArea1"].AxisY;
System.Windows.Forms.DataVisualization.Charting.Axis xaxis =
chart_filters.ChartAreas["ChartArea1"].AxisX;
yaxis.Interval = gainMax / 3;
yaxis.Minimum = -gainMax;
yaxis.Maximum = gainMax;
xaxis.Minimum = 1;
xaxis.Maximum = filters.Count;
// make grid lines lighter
xaxis.MajorGrid.LineColor = Color.LightGray;
yaxis.MajorGrid.LineColor = Color.LightGray;
// make graph easier to see
series.BorderWidth = 3;
}
/// <summary>
/// Create a message to be passed to the client.
/// </summary>
/// <param name="type">The type of message to be passed.</param>
/// <returns>Said message.</returns>
public string CreateMessage(MESSAGE_TYPE type)
{
StringBuilder sb = new StringBuilder();
switch (type)
{
case MESSAGE_TYPE.FILTER_APPLY:
sb.Append("apply_filter:");
sb.Append(eqAPI.IsEqualizerApplied() ? "true" : "false");
break;
case MESSAGE_TYPE.FILTER_REMOVED:
sb.Append("filter:removed");
break;
case MESSAGE_TYPE.FILTER_ADDED:
sb.Append("filter:added");
break;
case MESSAGE_TYPE.FILTERS_GAIN:
sb.Append("filters:");
// get the gains on the filters
bool first = true;
foreach (KeyValuePair <double, Filter> pair in eqAPI.GetFilters())
{
Filter filter = pair.Value;
if (first)
{
first = false;
}
else
{
sb.Append(",");
}
sb.Append(filter.Gain.ToString());
}
break;
case MESSAGE_TYPE.PAUSE:
sb.Append("playback:pause");
break;
case MESSAGE_TYPE.PLAY:
sb.Append("playback:play");
break;
case MESSAGE_TYPE.VOLUME_CHANGED:
sb.Append("volume:");
sb.Append(eqAPI.PreAmp);
break;
case MESSAGE_TYPE.TRACK_CHANGED:
sb.Append("track_changed:artist:");
sb.Append(zuneAPI.CurrentTrack.Artist);
sb.Append(";trackname:");
sb.Append(zuneAPI.CurrentTrack.Title);
sb.Append(";");
sb.Append(zuneAPI.IsPlaying() ? CreateMessage(MESSAGE_TYPE.PLAY) : CreateMessage(MESSAGE_TYPE.PAUSE));
sb.Append(";");
sb.Append(CreateMessage(MESSAGE_TYPE.VOLUME_CHANGED));
sb.Append(";");
sb.Append(CreateMessage(MESSAGE_TYPE.FILTERS_GAIN));
break;
}
return(sb.ToString());
}
