Refactor input subsystem

src/common/key_map.h

@@ -4,11 +4,42 @@
 
 #pragma once
 
+#include <array>
 #include <tuple>
 #include "core/hle/service/hid/hid.h"
 
+class EmuWindow;
+
 namespace KeyMap {
 
+enum class IndirectTarget {
+    CIRCLE_PAD_UP, CIRCLE_PAD_DOWN, CIRCLE_PAD_LEFT, CIRCLE_PAD_RIGHT,
+};
+
+/**
+ * Represents a key mapping target. It can be a PadState that represents 3DS real buttons,
+ * or an IndirectTarget.
+ */
+struct KeyTarget {
+    bool direct;
+    union {
+        u32 direct_target_hex;
+        IndirectTarget indirect_target;
+    } target;
+
+    KeyTarget() : direct(true) {
+        target.direct_target_hex = 0;
+    }
+
+    KeyTarget(Service::HID::PadState pad) : direct(true) {
+        target.direct_target_hex = pad.hex;
+    }
+
+    KeyTarget(IndirectTarget i) : direct(false) {
+        target.indirect_target = i;
+    }
+};
+
 /**
  * Represents a key for a specific host device.
  */
@@ -27,19 +58,31 @@ struct HostDeviceKey {
     }
 };
 
+extern const std::array<KeyTarget, Settings::NativeInput::NUM_INPUTS> mapping_targets;
+
 /**
  * Generates a new device id, which uniquely identifies a host device within KeyMap.
  */
 int NewDeviceId();
 
 /**
- * Maps a device-specific key to a PadState.
+ * Maps a device-specific key to a target (a PadState or an IndirectTarget).
  */
-void SetKeyMapping(HostDeviceKey key, Service::HID::PadState padState);
+void SetKeyMapping(HostDeviceKey key, KeyTarget target);
 
 /**
- * Gets the PadState that's mapped to the provided device-specific key.
+ * Clears all key mappings belonging to one device.
  */
-Service::HID::PadState GetPadKey(HostDeviceKey key);
+void ClearKeyMapping(int device_id);
+
+/**
+ * Maps a key press actions and call the corresponding function in EmuWindow
+ */
+void PressKey(EmuWindow& emu_window, HostDeviceKey key);
+
+/**
+ * Maps a key release actions and call the corresponding function in EmuWindow
+ */
+void ReleaseKey(EmuWindow& emu_window, HostDeviceKey key);
 
 }