private bool FocusHookFilter(InputEventMessageRedirector.MessageType type, EventArgs e)
{
// Don't capture when the sandbox is active. Input is likely to be needed in the current Game View.
if (Sandbox.State == SandboxState.Playing) return false;
// Capture mouse wheel for camera navigation
if (type == InputEventMessageRedirector.MessageType.MouseWheel)
{
return true;
}
// Capture space key for alternative camera navigation
else if (type == InputEventMessageRedirector.MessageType.KeyDown)
{
KeyEventArgs keyArgs = e as KeyEventArgs;
if (keyArgs == null) return false;
if (keyArgs.KeyCode == Keys.Space)
{
// Only capture the space key when we had recent movement and no other input keys.
// The user might be typing something with the mouse cursor accidentally hovering here.
if ((DateTime.Now - this.globalInputLastOtherKey).TotalMilliseconds > 1000 &&
(DateTime.Now - this.lastLocalMouseMove).TotalMilliseconds < 1000)
{
return true;
}
}
else
{
this.globalInputLastOtherKey = DateTime.Now;
}
}
return false;
}
private void InstallFocusHook()
{
if (this.graphicsControl.Control.Focused) return;
// Hook global message filter
if (this.globalInputFilter == null)
{
this.globalInputFilter = new InputEventMessageRedirector(
this.graphicsControl.Control,
this.FocusHookFilter,
InputEventMessageRedirector.MessageType.MouseWheel,
InputEventMessageRedirector.MessageType.KeyDown);
Application.AddMessageFilter(this.globalInputFilter);
}
}
private void RemoveFocusHook()
{
// Remove global message filter
if (this.globalInputFilter != null)
{
Application.RemoveMessageFilter(this.globalInputFilter);
this.globalInputFilter = null;
}
}
private bool FocusHookFilter(InputEventMessageRedirector.MessageType type, EventArgs e)
{
// Capture the mouse wheel - except in sandbox mode. Input is likely to be needed in the current Game View
return Sandbox.State != SandboxState.Playing;
}