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Reduce memory allocations in KeyboardController

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This commit is contained in:
Kamil Trzciński 2022-11-28 19:21:12 +01:00
parent e683915a2c
commit 3c209f04b4
1 changed files with 10 additions and 19 deletions
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29
SteamController/Devices/KeyboardController.cs
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@ -1,5 +1,4 @@
using WindowsInput;
using KeyRepeats = System.Tuple<System.DateTime, int>;
namespace SteamController.Devices
{
@ -10,8 +9,8 @@ namespace SteamController.Devices
InputSimulator simulator = new InputSimulator();
Dictionary<VirtualKeyCode, KeyRepeats> keyCodes = new Dictionary<VirtualKeyCode, KeyRepeats>();
Dictionary<VirtualKeyCode, KeyRepeats> lastKeyCodes = new Dictionary<VirtualKeyCode, KeyRepeats>();
Dictionary<VirtualKeyCode, DateTime> keyCodes = new Dictionary<VirtualKeyCode, DateTime>();
Dictionary<VirtualKeyCode, DateTime> lastKeyCodes = new Dictionary<VirtualKeyCode, DateTime>();
public KeyboardController()
{
@ -69,7 +68,8 @@ namespace SteamController.Devices
{
if (keyCodes.ContainsKey(key))
return;
var keyRepeat = lastKeyCodes.GetValueOrDefault(key) ?? new KeyRepeats(DateTime.Now.Add(FirstRepeat), 0);
if (!lastKeyCodes.TryGetValue(key, out var keyRepeat))
keyRepeat = DateTime.Now.Add(FirstRepeat);
keyCodes.Add(key, keyRepeat);
}
}
@ -83,7 +83,7 @@ namespace SteamController.Devices
internal void BeforeUpdate()
{
lastKeyCodes = keyCodes;
keyCodes = new Dictionary<VirtualKeyCode, KeyRepeats>();
keyCodes = new Dictionary<VirtualKeyCode, DateTime>();
}
internal void Update()
@ -91,20 +91,14 @@ namespace SteamController.Devices
// Key Up: it is missing now
foreach (var keyUp in lastKeyCodes.Except(keyCodes))
{
try
{
// if key was not yet pressed, send it
if (keyUp.Value.Item2 < 0)
simulator.Keyboard.KeyPress(keyUp.Key);
simulator.Keyboard.KeyUp(keyUp.Key);
}
try { simulator.Keyboard.KeyUp(keyUp.Key); }
catch (InvalidOperationException) { }
}
// Key Down: new keys being down
foreach (var keyUp in keyCodes.Except(lastKeyCodes))
foreach (var keyDown in keyCodes.Except(lastKeyCodes))
{
try { simulator.Keyboard.KeyDown(keyUp.Key); }
try { simulator.Keyboard.KeyDown(keyDown.Key); }
catch (InvalidOperationException) { }
}
@ -112,16 +106,13 @@ namespace SteamController.Devices
var now = DateTime.Now;
foreach (var keyPress in keyCodes)
{
if (keyPress.Value.Item1 > now)
if (keyPress.Value > now)
continue;
try { simulator.Keyboard.KeyPress(keyPress.Key); }
catch (InvalidOperationException) { }
keyCodes[keyPress.Key] = new KeyRepeats(
DateTime.Now.Add(NextRepeats),
keyPress.Value.Item2 + 1
);
keyCodes[keyPress.Key] = DateTime.Now.Add(NextRepeats);
}
}