1 files changed, 261 insertions, 0 deletions

diff --git a/src/input_common/mouse/mouse_poller.cpp b/src/input_common/mouse/mouse_poller.cpp
new file mode 100644
index 000000000..6213f3dbd
--- /dev/null
+++ b/src/input_common/mouse/mouse_poller.cpp
@@ -0,0 +1,261 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <atomic>
+#include <list>
+#include <mutex>
+#include <utility>
+#include "common/assert.h"
+#include "common/threadsafe_queue.h"
+#include "input_common/mouse/mouse_input.h"
+#include "input_common/mouse/mouse_poller.h"
+
+namespace InputCommon {
+
+class MouseButton final : public Input::ButtonDevice {
+public:
+    explicit MouseButton(u32 button_, const MouseInput::Mouse* mouse_input_)
+        : button(button_), mouse_input(mouse_input_) {}
+
+    bool GetStatus() const override {
+        return mouse_input->GetMouseState(button).pressed;
+    }
+
+private:
+    const u32 button;
+    const MouseInput::Mouse* mouse_input;
+};
+
+MouseButtonFactory::MouseButtonFactory(std::shared_ptr<MouseInput::Mouse> mouse_input_)
+    : mouse_input(std::move(mouse_input_)) {}
+
+std::unique_ptr<Input::ButtonDevice> MouseButtonFactory::Create(
+    const Common::ParamPackage& params) {
+    const auto button_id = params.Get("button", 0);
+
+    return std::make_unique<MouseButton>(button_id, mouse_input.get());
+}
+
+Common::ParamPackage MouseButtonFactory::GetNextInput() const {
+    MouseInput::MouseStatus pad;
+    Common::ParamPackage params;
+    auto& queue = mouse_input->GetMouseQueue();
+    while (queue.Pop(pad)) {
+        // This while loop will break on the earliest detected button
+        if (pad.button != MouseInput::MouseButton::Undefined) {
+            params.Set("engine", "mouse");
+            params.Set("button", static_cast<u16>(pad.button));
+            return params;
+        }
+    }
+    return params;
+}
+
+void MouseButtonFactory::BeginConfiguration() {
+    polling = true;
+    mouse_input->BeginConfiguration();
+}
+
+void MouseButtonFactory::EndConfiguration() {
+    polling = false;
+    mouse_input->EndConfiguration();
+}
+
+class MouseAnalog final : public Input::AnalogDevice {
+public:
+    explicit MouseAnalog(u32 port_, u32 axis_x_, u32 axis_y_, float deadzone_, float range_,
+                         const MouseInput::Mouse* mouse_input_)
+        : button(port_), axis_x(axis_x_), axis_y(axis_y_), deadzone(deadzone_), range(range_),
+          mouse_input(mouse_input_) {}
+
+    float GetAxis(u32 axis) const {
+        std::lock_guard lock{mutex};
+        const auto axis_value =
+            static_cast<float>(mouse_input->GetMouseState(button).axis.at(axis));
+        return axis_value / (100.0f * range);
+    }
+
+    std::pair<float, float> GetAnalog(u32 analog_axis_x, u32 analog_axis_y) const {
+        float x = GetAxis(analog_axis_x);
+        float y = GetAxis(analog_axis_y);
+
+        // Make sure the coordinates are in the unit circle,
+        // otherwise normalize it.
+        float r = x * x + y * y;
+        if (r > 1.0f) {
+            r = std::sqrt(r);
+            x /= r;
+            y /= r;
+        }
+
+        return {x, y};
+    }
+
+    std::tuple<float, float> GetStatus() const override {
+        const auto [x, y] = GetAnalog(axis_x, axis_y);
+        const float r = std::sqrt((x * x) + (y * y));
+        if (r > deadzone) {
+            return {x / r * (r - deadzone) / (1 - deadzone),
+                    y / r * (r - deadzone) / (1 - deadzone)};
+        }
+        return {0.0f, 0.0f};
+    }
+
+private:
+    const u32 button;
+    const u32 axis_x;
+    const u32 axis_y;
+    const float deadzone;
+    const float range;
+    const MouseInput::Mouse* mouse_input;
+    mutable std::mutex mutex;
+};
+
+/// An analog device factory that creates analog devices from GC Adapter
+MouseAnalogFactory::MouseAnalogFactory(std::shared_ptr<MouseInput::Mouse> mouse_input_)
+    : mouse_input(std::move(mouse_input_)) {}
+
+/**
+ * Creates analog device from joystick axes
+ * @param params contains parameters for creating the device:
+ *     - "port": the nth gcpad on the adapter
+ *     - "axis_x": the index of the axis to be bind as x-axis
+ *     - "axis_y": the index of the axis to be bind as y-axis
+ */
+std::unique_ptr<Input::AnalogDevice> MouseAnalogFactory::Create(
+    const Common::ParamPackage& params) {
+    const auto port = static_cast<u32>(params.Get("port", 0));
+    const auto axis_x = static_cast<u32>(params.Get("axis_x", 0));
+    const auto axis_y = static_cast<u32>(params.Get("axis_y", 1));
+    const auto deadzone = std::clamp(params.Get("deadzone", 0.0f), 0.0f, 1.0f);
+    const auto range = std::clamp(params.Get("range", 1.0f), 0.50f, 1.50f);
+
+    return std::make_unique<MouseAnalog>(port, axis_x, axis_y, deadzone, range, mouse_input.get());
+}
+
+void MouseAnalogFactory::BeginConfiguration() {
+    polling = true;
+    mouse_input->BeginConfiguration();
+}
+
+void MouseAnalogFactory::EndConfiguration() {
+    polling = false;
+    mouse_input->EndConfiguration();
+}
+
+Common::ParamPackage MouseAnalogFactory::GetNextInput() const {
+    MouseInput::MouseStatus pad;
+    Common::ParamPackage params;
+    auto& queue = mouse_input->GetMouseQueue();
+    while (queue.Pop(pad)) {
+        // This while loop will break on the earliest detected button
+        if (pad.button != MouseInput::MouseButton::Undefined) {
+            params.Set("engine", "mouse");
+            params.Set("port", static_cast<u16>(pad.button));
+            params.Set("axis_x", 0);
+            params.Set("axis_y", 1);
+            return params;
+        }
+    }
+    return params;
+}
+
+class MouseMotion final : public Input::MotionDevice {
+public:
+    explicit MouseMotion(u32 button_, const MouseInput::Mouse* mouse_input_)
+        : button(button_), mouse_input(mouse_input_) {}
+
+    Input::MotionStatus GetStatus() const override {
+        return mouse_input->GetMouseState(button).motion;
+    }
+
+private:
+    const u32 button;
+    const MouseInput::Mouse* mouse_input;
+};
+
+MouseMotionFactory::MouseMotionFactory(std::shared_ptr<MouseInput::Mouse> mouse_input_)
+    : mouse_input(std::move(mouse_input_)) {}
+
+std::unique_ptr<Input::MotionDevice> MouseMotionFactory::Create(
+    const Common::ParamPackage& params) {
+    const auto button_id = params.Get("button", 0);
+
+    return std::make_unique<MouseMotion>(button_id, mouse_input.get());
+}
+
+Common::ParamPackage MouseMotionFactory::GetNextInput() const {
+    MouseInput::MouseStatus pad;
+    Common::ParamPackage params;
+    auto& queue = mouse_input->GetMouseQueue();
+    while (queue.Pop(pad)) {
+        // This while loop will break on the earliest detected button
+        if (pad.button != MouseInput::MouseButton::Undefined) {
+            params.Set("engine", "mouse");
+            params.Set("button", static_cast<u16>(pad.button));
+            return params;
+        }
+    }
+    return params;
+}
+
+void MouseMotionFactory::BeginConfiguration() {
+    polling = true;
+    mouse_input->BeginConfiguration();
+}
+
+void MouseMotionFactory::EndConfiguration() {
+    polling = false;
+    mouse_input->EndConfiguration();
+}
+
+class MouseTouch final : public Input::TouchDevice {
+public:
+    explicit MouseTouch(u32 button_, const MouseInput::Mouse* mouse_input_)
+        : button(button_), mouse_input(mouse_input_) {}
+
+    Input::TouchStatus GetStatus() const override {
+        return mouse_input->GetMouseState(button).touch;
+    }
+
+private:
+    const u32 button;
+    const MouseInput::Mouse* mouse_input;
+};
+
+MouseTouchFactory::MouseTouchFactory(std::shared_ptr<MouseInput::Mouse> mouse_input_)
+    : mouse_input(std::move(mouse_input_)) {}
+
+std::unique_ptr<Input::TouchDevice> MouseTouchFactory::Create(const Common::ParamPackage& params) {
+    const auto button_id = params.Get("button", 0);
+
+    return std::make_unique<MouseTouch>(button_id, mouse_input.get());
+}
+
+Common::ParamPackage MouseTouchFactory::GetNextInput() const {
+    MouseInput::MouseStatus pad;
+    Common::ParamPackage params;
+    auto& queue = mouse_input->GetMouseQueue();
+    while (queue.Pop(pad)) {
+        // This while loop will break on the earliest detected button
+        if (pad.button != MouseInput::MouseButton::Undefined) {
+            params.Set("engine", "mouse");
+            params.Set("button", static_cast<u16>(pad.button));
+            return params;
+        }
+    }
+    return params;
+}
+
+void MouseTouchFactory::BeginConfiguration() {
+    polling = true;
+    mouse_input->BeginConfiguration();
+}
+
+void MouseTouchFactory::EndConfiguration() {
+    polling = false;
+    mouse_input->EndConfiguration();
+}
+
+} // namespace InputCommon