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Add mutitouch support for touch screens

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This commit is contained in:
german 2021-01-02 22:04:50 -06:00
parent d8df9a16bd
commit 8495e1bd83
10 changed files with 138 additions and 86 deletions
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42
src/core/frontend/emu_window.cpp
View file

@ -21,21 +21,17 @@ public:
std::mutex mutex;
bool touch_pressed = false; ///< True if touchpad area is currently pressed, otherwise false
float touch_x = 0.0f; ///< Touchpad X-position
float touch_y = 0.0f; ///< Touchpad Y-position
Input::TouchStatus status;
private:
class Device : public Input::TouchDevice {
public:
explicit Device(std::weak_ptr<TouchState>&& touch_state) : touch_state(touch_state) {}
Input::TouchStatus GetStatus() const override {
Input::TouchStatus touch_status = {};
Input::TouchStatus touch_status{};
if (auto state = touch_state.lock()) {
std::lock_guard guard{state->mutex};
touch_status[0] =
std::make_tuple(state->touch_x, state->touch_y, state->touch_pressed);
touch_status = state->status;
}
return touch_status;
}
@ -81,36 +77,44 @@ std::tuple<unsigned, unsigned> EmuWindow::ClipToTouchScreen(unsigned new_x, unsi
return std::make_tuple(new_x, new_y);
}
void EmuWindow::TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y) {
if (!IsWithinTouchscreen(framebuffer_layout, framebuffer_x, framebuffer_y))
void EmuWindow::TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y, std::size_t id) {
if (!IsWithinTouchscreen(framebuffer_layout, framebuffer_x, framebuffer_y)) {
return;
}
if (id >= touch_state->status.size()) {
return;
}
std::lock_guard guard{touch_state->mutex};
touch_state->touch_x =
const float x =
static_cast<float>(framebuffer_x - framebuffer_layout.screen.left) /
static_cast<float>(framebuffer_layout.screen.right - framebuffer_layout.screen.left);
touch_state->touch_y =
const float y =
static_cast<float>(framebuffer_y - framebuffer_layout.screen.top) /
static_cast<float>(framebuffer_layout.screen.bottom - framebuffer_layout.screen.top);
touch_state->touch_pressed = true;
touch_state->status[id] = std::make_tuple(x, y, true);
}
void EmuWindow::TouchReleased() {
void EmuWindow::TouchReleased(std::size_t id) {
if (id >= touch_state->status.size()) {
return;
}
std::lock_guard guard{touch_state->mutex};
touch_state->touch_pressed = false;
touch_state->touch_x = 0;
touch_state->touch_y = 0;
touch_state->status[id] = std::make_tuple(0.0f, 0.0f, false);
}
void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y) {
if (!touch_state->touch_pressed)
void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y, std::size_t id) {
if (id >= touch_state->status.size()) {
return;
}
if (!std::get<2>(touch_state->status[id]))
return;
if (!IsWithinTouchscreen(framebuffer_layout, framebuffer_x, framebuffer_y))
std::tie(framebuffer_x, framebuffer_y) = ClipToTouchScreen(framebuffer_x, framebuffer_y);
TouchPressed(framebuffer_x, framebuffer_y);
TouchPressed(framebuffer_x, framebuffer_y, id);
}
void EmuWindow::UpdateCurrentFramebufferLayout(unsigned width, unsigned height) {

12
src/core/frontend/emu_window.h
View file

@ -117,18 +117,22 @@ public:
* Signal that a touch pressed event has occurred (e.g. mouse click pressed)
* @param framebuffer_x Framebuffer x-coordinate that was pressed
* @param framebuffer_y Framebuffer y-coordinate that was pressed
* @param id Touch event id
*/
void TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y);
void TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y, std::size_t id);
/// Signal that a touch released event has occurred (e.g. mouse click released)
void TouchReleased();
/** Signal that a touch released event has occurred (e.g. mouse click released)
*@param id Touch event id
*/
void TouchReleased(std::size_t id);
/**
* Signal that a touch movement event has occurred (e.g. mouse was moved over the emu window)
* @param framebuffer_x Framebuffer x-coordinate
* @param framebuffer_y Framebuffer y-coordinate
* @param id Touch event id
*/
void TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y);
void TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y, std::size_t id);
/**
* Returns currently active configuration.

30
src/core/hle/service/hid/controllers/touchscreen.cpp
View file

@ -18,7 +18,7 @@ Controller_Touchscreen::Controller_Touchscreen(Core::System& system) : Controlle
Controller_Touchscreen::~Controller_Touchscreen() = default;
void Controller_Touchscreen::OnInit() {
for (size_t id = 0; id < MAX_FINGERS; id++) {
for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
mouse_finger_id[id] = MAX_FINGERS;
keyboard_finger_id[id] = MAX_FINGERS;
udp_finger_id[id] = MAX_FINGERS;
@ -48,23 +48,29 @@ void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timin
cur_entry.sampling_number2 = cur_entry.sampling_number;
const Input::TouchStatus& mouse_status = touch_mouse_device->GetStatus();
const Input::TouchStatus& keyboard_status = touch_btn_device->GetStatus();
const Input::TouchStatus& udp_status = touch_udp_device->GetStatus();
for (size_t id = 0; id < mouse_status.size(); id++) {
for (std::size_t id = 0; id < mouse_status.size(); ++id) {
mouse_finger_id[id] = UpdateTouchInputEvent(mouse_status[id], mouse_finger_id[id]);
keyboard_finger_id[id] = UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
udp_finger_id[id] = UpdateTouchInputEvent(udp_status[id], udp_finger_id[id]);
}
if (Settings::values.use_touch_from_button) {
const Input::TouchStatus& keyboard_status = touch_btn_device->GetStatus();
for (std::size_t id = 0; id < mouse_status.size(); ++id) {
keyboard_finger_id[id] =
UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
}
}
std::array<Finger, 16> active_fingers;
const auto end_iter = std::copy_if(fingers.begin(), fingers.end(), active_fingers.begin(),
[](const auto& finger) { return finger.pressed; });
const auto active_fingers_count =
static_cast<size_t>(std::distance(active_fingers.begin(), end_iter));
static_cast<std::size_t>(std::distance(active_fingers.begin(), end_iter));
const u64 tick = core_timing.GetCPUTicks();
cur_entry.entry_count = static_cast<s32_le>(active_fingers_count);
for (size_t id = 0; id < MAX_FINGERS; id++) {
for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
auto& touch_entry = cur_entry.states[id];
if (id < active_fingers_count) {
touch_entry.x = static_cast<u16>(active_fingers[id].x * Layout::ScreenUndocked::Width);
@ -73,7 +79,7 @@ void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timin
touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
touch_entry.delta_time = tick - active_fingers[id].last_touch;
active_fingers[id].last_touch = tick;
fingers[active_fingers[id].id].last_touch = tick;
touch_entry.finger = active_fingers[id].id;
touch_entry.attribute.raw = active_fingers[id].attribute.raw;
} else {
@ -101,8 +107,8 @@ void Controller_Touchscreen::OnLoadInputDevices() {
}
}
std::optional<size_t> Controller_Touchscreen::GetUnusedFingerID() const {
size_t first_free_id = 0;
std::optional<std::size_t> Controller_Touchscreen::GetUnusedFingerID() const {
std::size_t first_free_id = 0;
while (first_free_id < MAX_FINGERS) {
if (!fingers[first_free_id].pressed) {
return first_free_id;
@ -113,11 +119,11 @@ std::optional<size_t> Controller_Touchscreen::GetUnusedFingerID() const {
return std::nullopt;
}
size_t Controller_Touchscreen::UpdateTouchInputEvent(
const std::tuple<float, float, bool>& touch_input, size_t finger_id) {
std::size_t Controller_Touchscreen::UpdateTouchInputEvent(
const std::tuple<float, float, bool>& touch_input, std::size_t finger_id) {
const auto& [x, y, pressed] = touch_input;
if (pressed) {
Attributes attribute = {};
Attributes attribute{};
if (finger_id == MAX_FINGERS) {
const auto first_free_id = GetUnusedFingerID();
if (!first_free_id) {

14
src/core/hle/service/hid/controllers/touchscreen.h
View file

@ -30,17 +30,17 @@ public:
void OnLoadInputDevices() override;
private:
static constexpr size_t MAX_FINGERS = 16;
static constexpr std::size_t MAX_FINGERS = 16;
// Returns an unused finger id, if there is no fingers available std::nullopt will be returned
std::optional<size_t> GetUnusedFingerID() const;
std::optional<std::size_t> GetUnusedFingerID() const;
// If the touch is new it tries to assing a new finger id, if there is no fingers avaliable no
// changes will be made. Updates the coordinates if the finger id it's already set. If the touch
// ends delays the output by one frame to set the end_touch flag before finally freeing the
// finger id
size_t UpdateTouchInputEvent(const std::tuple<float, float, bool>& touch_input,
size_t finger_id);
std::size_t UpdateTouchInputEvent(const std::tuple<float, float, bool>& touch_input,
std::size_t finger_id);
struct Attributes {
union {
@ -92,9 +92,9 @@ private:
std::unique_ptr<Input::TouchDevice> touch_mouse_device;
std::unique_ptr<Input::TouchDevice> touch_udp_device;
std::unique_ptr<Input::TouchDevice> touch_btn_device;
std::array<size_t, MAX_FINGERS> mouse_finger_id;
std::array<size_t, MAX_FINGERS> keyboard_finger_id;
std::array<size_t, MAX_FINGERS> udp_finger_id;
std::array<std::size_t, MAX_FINGERS> mouse_finger_id;
std::array<std::size_t, MAX_FINGERS> keyboard_finger_id;
std::array<std::size_t, MAX_FINGERS> udp_finger_id;
std::array<Finger, MAX_FINGERS> fingers;
};
} // namespace Service::HID