Squashed 'external/gainput/' content from commit 2be0a50

git-subtree-dir: external/gainput
git-subtree-split: 2be0a50089eafcc6fccb66142180082e48f27f4c

lib/source/gainput/gestures/GainputTapGesture.cpp

@@ -0,0 +1,71 @@
+
+#include <gainput/gainput.h>
+#include <gainput/gestures/GainputTapGesture.h>
+
+#ifdef GAINPUT_ENABLE_TAP_GESTURE
+#include <gainput/GainputInputDeltaState.h>
+#include <gainput/GainputHelpers.h>
+
+namespace gainput
+{
+
+TapGesture::TapGesture(InputManager& manager, DeviceId device, unsigned index, DeviceVariant /*variant*/) :
+	InputGesture(manager, device, index),
+	firstDownTime_(0)
+{
+	actionButton_.buttonId = InvalidDeviceButtonId;
+
+	state_ = manager_.GetAllocator().New<InputState>(manager.GetAllocator(), 1);
+	GAINPUT_ASSERT(state_);
+	previousState_ = manager_.GetAllocator().New<InputState>(manager.GetAllocator(), 1);
+	GAINPUT_ASSERT(previousState_);
+}
+
+TapGesture::~TapGesture()
+{
+	manager_.GetAllocator().Delete(state_);
+	manager_.GetAllocator().Delete(previousState_);
+}
+
+void
+TapGesture::Initialize(DeviceId actionButtonDevice, DeviceButtonId actionButton, uint64_t timeSpan)
+{
+	actionButton_.deviceId = actionButtonDevice;
+	actionButton_.buttonId = actionButton;
+	timeSpan_ = timeSpan;
+}
+
+void
+TapGesture::InternalUpdate(InputDeltaState* delta)
+{
+	if (actionButton_.buttonId == InvalidDeviceButtonId)
+	{
+		return;
+	}
+
+	const InputDevice* actionDevice = manager_.GetDevice(actionButton_.deviceId);
+	GAINPUT_ASSERT(actionDevice);
+
+	HandleButton(*this, *state_, delta, TapTriggered, false);
+
+	if (actionDevice->GetBool(actionButton_.buttonId))
+	{
+		if (firstDownTime_ == 0)
+		{
+			firstDownTime_ = manager_.GetTime();
+		}
+	}
+	else
+	{
+		if (firstDownTime_ > 0 && firstDownTime_ + timeSpan_ >= manager_.GetTime())
+		{
+			HandleButton(*this, *state_, delta, TapTriggered, true);
+		}
+		firstDownTime_ = 0;
+	}
+}
+
+}
+
+#endif
+