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hold Space to preview

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This commit is contained in:
Paddy Xu
2021-07-08 21:32:38 +02:00
parent cbaf636173
commit c10773249f
1 changed files with 55 additions and 33 deletions
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88
QuickLook/KeystrokeDispatcher.cs
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@@ -31,9 +31,12 @@ namespace QuickLook
private static HashSet<Keys> _validKeys;
private GlobalKeyboardHook _hook;
private bool _isKeyDownInDesktopOrShell;
private bool _isPreviewRequest;
private bool _spaceIsDown;
private long _spaceHoldTick;
private long _lastInvalidKeyPressTick;
private const long HOLD_TO_PREVIEW_DURATION = TimeSpan.TicksPerMillisecond * 750;
private const long VALID_KEY_PRESS_DELAY = TimeSpan.TicksPerSecond * 1;
protected KeystrokeDispatcher()
@@ -65,44 +68,60 @@ namespace QuickLook
private void CallViewWindowManagerInvokeRoutine(KeyEventArgs e, bool isKeyDown)
{
if (e.Modifiers != Keys.None)
return;
// check if the window is valid at the time of pressing a key, used for case 1
if (isKeyDown)
// skip invalid keys, but record the timestamp
if (!_validKeys.Contains(e.KeyCode))
{
_isKeyDownInDesktopOrShell = NativeMethods.QuickLook.GetFocusedWindowType() !=
NativeMethods.QuickLook.FocusedWindowType.Invalid;
_isKeyDownInDesktopOrShell |= WindowHelper.IsForegroundWindowBelongToSelf();
}
// call InvokeRoutine only when:
// (1) user released a key which was pressed in a valid window, or
// (2) user pressed a key in a valid window
if (_isKeyDownInDesktopOrShell)
InvokeRoutine(e.KeyCode, isKeyDown);
// in case 2, reset the variable
if (!isKeyDown)
_isKeyDownInDesktopOrShell = false;
}
private void InvokeRoutine(Keys key, bool isKeyDown)
{
if (!_validKeys.Contains(key))
{
Debug.WriteLine($"Invalid keypress: key={key},down={isKeyDown}, time={_lastInvalidKeyPressTick}");
Debug.WriteLine($"Invalid keypress: key={e.KeyCode},down={isKeyDown}, time={_lastInvalidKeyPressTick}");
_lastInvalidKeyPressTick = DateTime.Now.Ticks;
return;
}
if (DateTime.Now.Ticks - _lastInvalidKeyPressTick < VALID_KEY_PRESS_DELAY)
// skip valid keys when modifiers are used
if (isKeyDown && e.Modifiers != Keys.None)
return;
// skip if key is valid but too close after pressing an invalid key
if (DateTime.Now.Ticks - _lastInvalidKeyPressTick < VALID_KEY_PRESS_DELAY)
return;
_lastInvalidKeyPressTick = 0L;
// skip if user is holding Space (don't skip other valid keys)
if (isKeyDown && e.KeyCode == Keys.Space)
{
if (_spaceIsDown)
return;
_spaceIsDown = true;
_spaceHoldTick = DateTime.Now.Ticks;
}
// check if the valid key is a preview request
if (isKeyDown)
{
_isPreviewRequest = NativeMethods.QuickLook.GetFocusedWindowType() !=
NativeMethods.QuickLook.FocusedWindowType.Invalid;
_isPreviewRequest |= WindowHelper.IsForegroundWindowBelongToSelf();
} // else (when isKeyDown is false), _isPreviewRequest retain its current state
// call InvokeRoutine only when user pressed a key in a valid window, or
// released a key which was pressed in a valid window, with an exception of Space which
// must be hold for 750ms before releasing.
if (_isPreviewRequest)
{
if (isKeyDown || e.KeyCode != Keys.Space ||
DateTime.Now.Ticks - _spaceHoldTick >= HOLD_TO_PREVIEW_DURATION)
InvokeRoutine(e.KeyCode, isKeyDown);
}
// when the key has been released, reset variables
if (!isKeyDown)
{
_isPreviewRequest = false;
_spaceIsDown = e.KeyCode != Keys.Space && _spaceIsDown;
}
}
private void InvokeRoutine(Keys key, bool isKeyDown)
{
Debug.WriteLine($"InvokeRoutine: key={key},down={isKeyDown}");
if (isKeyDown)
@@ -112,6 +131,9 @@ namespace QuickLook
case Keys.Enter:
PipeServerManager.SendMessage(PipeMessages.RunAndClose);
break;
case Keys.Space:
PipeServerManager.SendMessage(PipeMessages.Toggle);
break;
}
}
else
@@ -124,12 +146,12 @@ namespace QuickLook
case Keys.Right:
PipeServerManager.SendMessage(PipeMessages.Switch);
break;
case Keys.Space:
PipeServerManager.SendMessage(PipeMessages.Toggle);
break;
case Keys.Escape:
PipeServerManager.SendMessage(PipeMessages.Close);
break;
case Keys.Space:
PipeServerManager.SendMessage(PipeMessages.Toggle);
break;
}
}
}