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