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/*
* Copyright (C) 2020 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.
*/
#define LOG_TAG "TouchscreenGestureService"
#include "TouchscreenGesture.h"
#include <bitset>
#include <fstream>
#include <map>
#include <type_traits>
#include <vector>
namespace {
template <typename T>
std::enable_if_t<std::is_integral<T>::value, std::string> encode_binary(T i) {
return std::bitset<sizeof(T) * 8>(i).to_string();
}
} // anonymous namespace
namespace vendor {
namespace lineage {
namespace touch {
namespace V1_0 {
namespace implementation {
const std::string kGesturePath = "/proc/driver/gesture_type";
const std::map<int32_t, TouchscreenGesture::GestureInfo> TouchscreenGesture::kGestureInfoMap = {
// clang-format off
{0, {17, "Letter W"}},
{1, {31, "Letter S"}},
{2, {18, "Letter e"}},
{3, {50, "Letter M"}},
{4, {44, "Letter Z"}},
{5, {47, "Letter V"}},
{6, {168, "Left arrow"}},
{7, {159, "Right arrow"}},
{8, {119, "Two fingers down swipe"}},
// clang-format on
};
const uint8_t kKeyMaskGestureControl = 1 << 0;
const std::vector<uint8_t> kGestureMasks = {
1 << 1, // W gesture mask
1 << 2, // S gesture mask
1 << 3, // e gesture mask
1 << 4, // M gesture mask
1 << 5, // Z gesture mask
1 << 6, // V gesture mask
1 << 7, // Music control mask
1 << 7, // Music control mask
1 << 7, // Music control mask
};
Return<void> TouchscreenGesture::getSupportedGestures(getSupportedGestures_cb resultCb) {
std::vector<Gesture> gestures;
for (const auto& entry : kGestureInfoMap) {
gestures.push_back({entry.first, entry.second.name, entry.second.keycode});
}
resultCb(gestures);
return Void();
}
Return<bool> TouchscreenGesture::setGestureEnabled(
const ::vendor::lineage::touch::V1_0::Gesture& gesture, bool enabled) {
uint8_t gestureMode;
uint8_t mask = kGestureMasks[gesture.id];
std::fstream file(kGesturePath);
file >> gestureMode;
if (enabled)
gestureMode |= mask;
else
gestureMode &= ~mask;
if (gestureMode != 0) gestureMode |= kKeyMaskGestureControl;
file << encode_binary(gestureMode);
return !file.fail();
}
} // namespace implementation
} // namespace V1_0
} // namespace touch
} // namespace lineage
} // namespace vendor
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