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refactor: extract input sender to an interface for multiple platform support

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This commit is contained in:
Gerard Gascón 2024-06-28 14:23:17 +02:00
parent 184f78123a
commit 1e6f8c0b9f
4 changed files with 61 additions and 47 deletions
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6
SlidePresenter/InputSender/IInputSender.cs Normal file
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@ -0,0 +1,6 @@
namespace SwitchSlidePresenter.InputSender;
public interface IInputSender {
void NextSlide();
void PreviousSlide();
}

47
SlidePresenter/InputSender/WindowsInputSender.cs Normal file
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@ -0,0 +1,47 @@
using System.Runtime.InteropServices;
using Win32Api;
namespace SwitchSlidePresenter.InputSender;
public class WindowsInputSender : IInputSender {
private const uint INPUT_KEYBOARD = 1;
private const ushort VK_NEXT = 0x22;
private const ushort VK_PRIOR = 0x21;
private const uint KEYEVENTF_KEYDOWN = 0x0000;
private const uint KEYEVENTF_KEYUP = 0x0002;
public void NextSlide() => SimulateKeyPress(VK_NEXT);
public void PreviousSlide() => SimulateKeyPress(VK_PRIOR);
private static void SimulateKeyPress(ushort keyCode) {
Input[] inputs = new Input[2];
inputs[0] = new Input {
type = INPUT_KEYBOARD,
u = new InputUnion {
ki = new KeyboardInput {
wVk = keyCode,
wScan = 0,
dwFlags = KEYEVENTF_KEYDOWN,
time = 0,
dwExtraInfo = IntPtr.Zero
}
}
};
inputs[1] = new Input {
type = INPUT_KEYBOARD,
u = new InputUnion {
ki = new KeyboardInput {
wVk = keyCode,
wScan = 0,
dwFlags = KEYEVENTF_KEYUP,
time = 0,
dwExtraInfo = IntPtr.Zero
}
}
};
Win32Api.Win32Api.SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(Input)));
}
}

51
SlidePresenter/SlideSwitcher.cs
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@ -1,16 +1,10 @@
using System.Runtime.InteropServices;
using Win32Api;
using SwitchSlidePresenter.InputSender;
namespace SwitchSlidePresenter;
public class SlideSwitcher : IDisposable {
private readonly IGamepadReader? _reader;
private const uint INPUT_KEYBOARD = 1;
private const ushort VK_NEXT = 0x22;
private const ushort VK_PRIOR = 0x21;
private const uint KEYEVENTF_KEYDOWN = 0x0000;
private const uint KEYEVENTF_KEYUP = 0x0002;
private readonly IInputSender _inputSender = new WindowsInputSender();
public SlideSwitcher(IGamepadReader? reader) {
_reader = reader;
@ -23,43 +17,6 @@ public class SlideSwitcher : IDisposable {
_reader.PrevSlide -= PreviousSlide;
}
private static void NextSlide() {
SimulateKeyPress(VK_NEXT);
}
private static void PreviousSlide() {
SimulateKeyPress(VK_PRIOR);
}
private static void SimulateKeyPress(ushort keyCode) {
Input[] inputs = new Input[2];
inputs[0] = new Input {
type = INPUT_KEYBOARD,
u = new InputUnion {
ki = new KeyboardInput {
wVk = keyCode,
wScan = 0,
dwFlags = KEYEVENTF_KEYDOWN,
time = 0,
dwExtraInfo = IntPtr.Zero
}
}
};
inputs[1] = new Input {
type = INPUT_KEYBOARD,
u = new InputUnion {
ki = new KeyboardInput {
wVk = keyCode,
wScan = 0,
dwFlags = KEYEVENTF_KEYUP,
time = 0,
dwExtraInfo = IntPtr.Zero
}
}
};
Win32Api.Win32Api.SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(Input)));
}
private void NextSlide() => _inputSender.NextSlide();
private void PreviousSlide() => _inputSender.PreviousSlide();
}