private void HandleMidiSourcePropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "HoldPedal")
{
if (ApplyHoldPedalToSustain)
{
KillSustainedNotes();
}
if (SwitchSource.HasFlag(SwitchSources.HoldPedal))
{
Switch = _midiSource.HoldPedal;
}
}
if (e.PropertyName == "PitchBend")
{
_voices.Where(v => v.FromMidiNote != null).Execute(SetPitch);
}
else if (e.PropertyName == "Modulation")
{
ModulationAmount = _midiSource.Modulation;
}
if (e.PropertyName == "Portamento" && SwitchSource.HasFlag(SwitchSources.PortamentoSwitch))
{
Switch = _midiSource.Portamento;
}
else if (e.PropertyName == "SustenutoPedal" && SwitchSource.HasFlag(SwitchSources.SustenutoPedal))
{
Switch = _midiSource.SustenutoPedal;
}
else if (e.PropertyName == "SoftPedal" && SwitchSource.HasFlag(SwitchSources.SoftPedal))
{
Switch = _midiSource.SoftPedal;
}
else if (e.PropertyName == "Legato" && SwitchSource.HasFlag(SwitchSources.LegatoSwitch))
{
Switch = _midiSource.Legato;
}
float?newIntensity = null;
if (e.PropertyName == "Pressure" && IntensitySource.HasFlag(ExpressionSources.ChannelPressure))
{
newIntensity = _midiSource.Pressure;
}
else if (e.PropertyName == "BreathController" && IntensitySource.HasFlag(ExpressionSources.BreathController))
{
newIntensity = _midiSource.BreathController;
}
else if (e.PropertyName == "FootPedal" && IntensitySource.HasFlag(ExpressionSources.FootPedal))
{
newIntensity = _midiSource.FootPedal;
}
else if (e.PropertyName == "Expression" && IntensitySource.HasFlag(ExpressionSources.Expression))
{
newIntensity = _midiSource.Expression;
}
if (newIntensity.HasValue)
{
_voices.Where(v => v.IsActive && v.FromMidiNote != null).Execute(v => v.Intensity = newIntensity.Value);
}
}
/// <summary>
/// Fills the image with intensity values, created by calling <paramref name="fA"/>, <paramref name="fR"/>, <paramref name="fG"/>, and <paramref name="fB"/>
/// for each pixel in the respective channel in the image.
/// If the bitmap is a gray scale image, only <paramref name="fG"/> is used.
/// </summary>
/// <param name="bmp">The image to fill.</param>
/// <param name="fA">The transparency source function for the red channel.</param>
/// <param name="fR">The intensity source function for the red channel.</param>
/// <param name="fG">The intensity source function for the green channel.</param>
/// <param name="fB">The intensity source function for the blue channel.</param>
/// <exception cref="ArgumentNullException">Is thrown,
/// if <c>null</c> is given for <paramref name="bmp"/>, <paramref name="fR"/>, <paramref name="fG"/>, or <paramref name="fB"/>.</exception>
/// <exception cref="ArgumentException">Is thrown,
/// if the pixel format of <paramref name="bmp"/> is not one of the following:
/// <see cref="PixelFormat.Format8bppIndexed"/>,
/// <see cref="PixelFormat.Format24bppRgb"/>,
/// or <see cref="PixelFormat.Format32bppArgb"/>.
/// </exception>
public static void FillWith(this Bitmap bmp, IntensitySource fA, IntensitySource fR, IntensitySource fG, IntensitySource fB)
{
if (bmp == null) throw new ArgumentNullException("bmp");
if (fA == null) throw new ArgumentNullException("fA");
if (fR == null) throw new ArgumentNullException("fR");
if (fG == null) throw new ArgumentNullException("fG");
if (fB == null) throw new ArgumentNullException("fB");
var w = bmp.Width;
var h = bmp.Height;
BitmapData bmpData;
IntPtr line;
switch (bmp.PixelFormat)
{
case PixelFormat.Format8bppIndexed:
bmpData = bmp.LockBits(new Rectangle(0, 0, w, h),
ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
line = bmpData.Scan0;
for (var y = 0; y < h; y++)
{
for (var x = 0; x < w; x++)
{
Marshal.WriteByte(line, x, fG(x, y));
}
line += bmpData.Stride;
}
bmp.UnlockBits(bmpData);
break;
case PixelFormat.Format24bppRgb:
bmpData = bmp.LockBits(new Rectangle(0, 0, w, h),
ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
line = bmpData.Scan0;
for (var y = 0; y < h; y++)
{
for (var x = 0; x < w; x++)
{
var ofs = x * 3;
Marshal.WriteByte(line, ofs + 0, fB(x, y));
Marshal.WriteByte(line, ofs + 1, fG(x, y));
Marshal.WriteByte(line, ofs + 2, fR(x, y));
}
line += bmpData.Stride;
}
bmp.UnlockBits(bmpData);
break;
case PixelFormat.Format32bppArgb:
bmpData = bmp.LockBits(new Rectangle(0, 0, w, h),
ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
line = bmpData.Scan0;
for (var y = 0; y < h; y++)
{
for (var x = 0; x < w; x++)
{
var ofs = x * 4;
Marshal.WriteByte(line, ofs + 0, fB(x, y));
Marshal.WriteByte(line, ofs + 1, fG(x, y));
Marshal.WriteByte(line, ofs + 2, fR(x, y));
Marshal.WriteByte(line, ofs + 3, fA(x, y));
}
line += bmpData.Stride;
}
bmp.UnlockBits(bmpData);
break;
default:
throw new ArgumentException("The pixel format of the given bitmap is not supported.", "bmp");
}
}