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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/param_package.h"
#include "input_common/drivers/touch_screen.h"
namespace InputCommon {
constexpr PadIdentifier identifier = {
.guid = Common::UUID{},
.port = 0,
.pad = 0,
};
TouchScreen::TouchScreen(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
PreSetController(identifier);
ReleaseAllTouch();
}
void TouchScreen::TouchMoved(float x, float y, std::size_t finger_id) {
const auto index = GetIndexFromFingerId(finger_id);
if (!index) {
// Touch doesn't exist handle it as a new one
TouchPressed(x, y, finger_id);
return;
}
const auto i = index.value();
fingers[i].is_active = true;
SetButton(identifier, static_cast<int>(i), true);
SetAxis(identifier, static_cast<int>(i * 2), x);
SetAxis(identifier, static_cast<int>(i * 2 + 1), y);
}
void TouchScreen::TouchPressed(float x, float y, std::size_t finger_id) {
if (GetIndexFromFingerId(finger_id)) {
// Touch already exist. Just update the data
TouchMoved(x, y, finger_id);
return;
}
const auto index = GetNextFreeIndex();
if (!index) {
// No free entries. Ignore input
return;
}
const auto i = index.value();
fingers[i].is_enabled = true;
fingers[i].finger_id = finger_id;
TouchMoved(x, y, finger_id);
}
void TouchScreen::TouchReleased(std::size_t finger_id) {
const auto index = GetIndexFromFingerId(finger_id);
if (!index) {
return;
}
const auto i = index.value();
fingers[i].is_enabled = false;
SetButton(identifier, static_cast<int>(i), false);
SetAxis(identifier, static_cast<int>(i * 2), 0.0f);
SetAxis(identifier, static_cast<int>(i * 2 + 1), 0.0f);
}
std::optional<std::size_t> TouchScreen::GetIndexFromFingerId(std::size_t finger_id) const {
for (std::size_t index = 0; index < MAX_FINGER_COUNT; ++index) {
const auto& finger = fingers[index];
if (!finger.is_enabled) {
continue;
}
if (finger.finger_id == finger_id) {
return index;
}
}
return std::nullopt;
}
std::optional<std::size_t> TouchScreen::GetNextFreeIndex() const {
for (std::size_t index = 0; index < MAX_FINGER_COUNT; ++index) {
if (!fingers[index].is_enabled) {
return index;
}
}
return std::nullopt;
}
void TouchScreen::ClearActiveFlag() {
for (auto& finger : fingers) {
finger.is_active = false;
}
}
void TouchScreen::ReleaseInactiveTouch() {
for (const auto& finger : fingers) {
if (!finger.is_active) {
TouchReleased(finger.finger_id);
}
}
}
void TouchScreen::ReleaseAllTouch() {
for (const auto& finger : fingers) {
if (finger.is_enabled) {
TouchReleased(finger.finger_id);
}
}
}
} // namespace InputCommon
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