hidl: Setup touchscreen gestures with Lineage touch HIDL HAL

This takes advantage of the touchscreen gesture nodes exposed by Oplus
touchscreen drivers.

Change-Id: I5a43b8f922a8d1c940e367d22d377b7161913d3a

hidl/touch/include/touch/oplus/TouchscreenGesture.h

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <vendor/lineage/touch/1.0/ITouchscreenGesture.h>
+#include <map>
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::vendor::lineage::touch::V1_0::Gesture;
+
+class TouchscreenGesture : public ITouchscreenGesture {
+  public:
+    // Methods from ::vendor::lineage::touch::V1_0::ITouchscreenGesture follow.
+    Return<void> getSupportedGestures(getSupportedGestures_cb resultCb) override;
+    Return<bool> setGestureEnabled(const Gesture& gesture, bool enabled) override;
+
+  private:
+    // See: drivers/input/touchscreen/oplus_touchscreen_v2/touchpanel_common.h
+    static constexpr int kGestureStartKey = 246;
+    enum {
+        kGestureUnknown,
+        kGestureDoubleTap,
+        kGestureUpVee,
+        kGestureDownVee,
+        kGestureLeftVee,
+        kGestureRightVee,
+        kGestureCircle,
+        kGestureDoubleSwipe,
+        kGestureLeftToRight,
+        kGestureRightToLeft,
+        kGestureUpToDown,
+        kGestureDownToUp,
+        kGestureM,
+        kGestureW,
+        kGestureFingerprintDown,
+        kGestureFingerprintUp,
+        kGestureSingleTap,
+        kGestureHeart,
+        kGestureS,
+    };
+
+    const std::map<int, std::string> kGestureNames = {
+            {kGestureUnknown, "Unknown"},
+            {kGestureDoubleTap, "Double tap"},
+            {kGestureUpVee, "Down arrow"},
+            {kGestureDownVee, "Up arrow"},
+            {kGestureLeftVee, "Right arrow"},
+            {kGestureRightVee, "Left arrow"},
+            {kGestureCircle, "Letter O"},
+            {kGestureDoubleSwipe, "Two fingers down swipe"},
+            {kGestureLeftToRight, "One finger right swipe"},
+            {kGestureRightToLeft, "One finger left swipe"},
+            {kGestureUpToDown, "One finger down swipe"},
+            {kGestureDownToUp, "One finger up swipe"},
+            {kGestureM, "Letter M"},
+            {kGestureW, "Letter W"},
+            {kGestureFingerprintDown, "Fingerprint down"},
+            {kGestureFingerprintUp, "Fingerprint up"},
+            {kGestureSingleTap, "Single tap"},
+            {kGestureHeart, "Heart"},
+            {kGestureS, "Letter S"},
+    };
+
+    template <typename H, typename... T>
+    static constexpr int makeBitField(H head, T... tail) {
+        return ((1 << head) | ... | (1 << tail));
+    }
+    static const int kSupportedGestures;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor

hidl/touch/include/touch/oplus/TouchscreenGestureConfig.h

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+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "TouchscreenGesture.h"
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+const int TouchscreenGesture::kSupportedGestures = makeBitField(
+        kGestureUpVee, kGestureDownVee, kGestureLeftVee, kGestureRightVee, kGestureCircle,
+        kGestureDoubleSwipe, kGestureLeftToRight, kGestureRightToLeft, kGestureUpToDown,
+        kGestureDownToUp, kGestureM, kGestureW, kGestureSingleTap, kGestureS);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor