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fixed WindowExtensions not working on Release

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Ellpeck 2020-02-10 23:52:09 +01:00
parent 2083868874
commit 9366890aaa
1 changed files with 26 additions and 9 deletions
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35
MLEM/Extensions/WindowExtensions.cs
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@ -6,25 +6,42 @@ using Microsoft.Xna.Framework.Input;
namespace MLEM.Extensions {
public static class WindowExtensions {
private static readonly bool TextInputSupported = typeof(GameWindow).GetEvent("TextInput") != null;
private static readonly EventInfo TextInput = typeof(GameWindow).GetEvent("TextInput");
public static bool AddTextInputListener(this GameWindow window, TextInputCallback callback) {
if (!SupportsTextInput())
return false;
TextInputAdder.Add(window, callback);
return true;
return new TextInputReflector(callback).AddToWindow(window);
}
public static bool SupportsTextInput() {
return TextInputSupported;
return TextInput != null;
}
public delegate void TextInputCallback(object sender, Keys key, char character);
private static class TextInputAdder {
private class TextInputReflector {
public static void Add(GameWindow window, TextInputCallback callback) {
window.TextInput += (sender, args) => callback(sender, args.Key, args.Character);
private static readonly MethodInfo Callback = typeof(TextInputReflector).GetMethod(nameof(OnTextInput), BindingFlags.Instance | BindingFlags.NonPublic);
private static PropertyInfo key;
private static PropertyInfo character;
private readonly TextInputCallback callback;
public TextInputReflector(TextInputCallback callback) {
this.callback = callback;
}
public bool AddToWindow(GameWindow window) {
if (TextInput == null)
return false;
TextInput.AddEventHandler(window, Delegate.CreateDelegate(TextInput.EventHandlerType, this, Callback));
return true;
}
private void OnTextInput(object sender, EventArgs args) {
if (key == null)
key = args.GetType().GetProperty("Key");
if (character == null)
character = args.GetType().GetProperty("Character");
this.callback.Invoke(sender, (Keys) key.GetValue(args), (char) character.GetValue(args));
}
}