1 files changed, 120 insertions, 6 deletions
diff --git a/src/common/key_map.cpp b/src/common/key_map.cpp
index 844d5df68..ad311d66b 100644
--- a/src/common/key_map.cpp
+++ b/src/common/key_map.cpp
@@ -2,24 +2,138 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include "key_map.h"
 #include <map>
 
+#include "common/emu_window.h"
+#include "common/key_map.h"
+
 namespace KeyMap {
 
-static std::map<HostDeviceKey, Service::HID::PadState> key_map;
+// TODO (wwylele): currently we treat c-stick as four direction buttons
+//     and map it directly to EmuWindow::ButtonPressed.
+//     It should go the analog input way like circle pad does.
+const std::array<KeyTarget, Settings::NativeInput::NUM_INPUTS> mapping_targets = {{
+    Service::HID::PAD_A, Service::HID::PAD_B, Service::HID::PAD_X, Service::HID::PAD_Y,
+    Service::HID::PAD_L, Service::HID::PAD_R, Service::HID::PAD_ZL, Service::HID::PAD_ZR,
+    Service::HID::PAD_START, Service::HID::PAD_SELECT, Service::HID::PAD_NONE,
+    Service::HID::PAD_UP, Service::HID::PAD_DOWN, Service::HID::PAD_LEFT, Service::HID::PAD_RIGHT,
+    Service::HID::PAD_C_UP, Service::HID::PAD_C_DOWN, Service::HID::PAD_C_LEFT, Service::HID::PAD_C_RIGHT,
+
+    IndirectTarget::CirclePadUp,
+    IndirectTarget::CirclePadDown,
+    IndirectTarget::CirclePadLeft,
+    IndirectTarget::CirclePadRight,
+    IndirectTarget::CirclePadModifier,
+}};
+
+static std::map<HostDeviceKey, KeyTarget> key_map;
 static int next_device_id = 0;
 
+static bool circle_pad_up = false;
+static bool circle_pad_down = false;
+static bool circle_pad_left = false;
+static bool circle_pad_right = false;
+static bool circle_pad_modifier = false;
+
+static void UpdateCirclePad(EmuWindow& emu_window) {
+    constexpr float SQRT_HALF = 0.707106781;
+    int x = 0, y = 0;
+
+    if (circle_pad_right)
+        ++x;
+    if (circle_pad_left)
+        --x;
+    if (circle_pad_up)
+        ++y;
+    if (circle_pad_down)
+        --y;
+
+    float modifier = circle_pad_modifier ? Settings::values.pad_circle_modifier_scale : 1.0;
+    emu_window.CirclePadUpdated(x * modifier * (y == 0 ? 1.0 : SQRT_HALF), y * modifier * (x == 0 ? 1.0 : SQRT_HALF));
+}
+
 int NewDeviceId() {
     return next_device_id++;
 }
 
-void SetKeyMapping(HostDeviceKey key, Service::HID::PadState padState) {
-    key_map[key].hex = padState.hex;
+void SetKeyMapping(HostDeviceKey key, KeyTarget target) {
+    key_map[key] = target;
+}
+
+void ClearKeyMapping(int device_id) {
+    auto iter = key_map.begin();
+    while (iter != key_map.end()) {
+        if (iter->first.device_id == device_id)
+            key_map.erase(iter++);
+        else
+            ++iter;
+    }
 }
 
-Service::HID::PadState GetPadKey(HostDeviceKey key) {
-    return key_map[key];
+void PressKey(EmuWindow& emu_window, HostDeviceKey key) {
+    auto target = key_map.find(key);
+    if (target == key_map.end())
+        return;
+
+    if (target->second.direct) {
+        emu_window.ButtonPressed({{target->second.target.direct_target_hex}});
+    } else {
+        switch (target->second.target.indirect_target) {
+        case IndirectTarget::CirclePadUp:
+            circle_pad_up = true;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadDown:
+            circle_pad_down = true;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadLeft:
+            circle_pad_left = true;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadRight:
+            circle_pad_right = true;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadModifier:
+            circle_pad_modifier = true;
+            UpdateCirclePad(emu_window);
+            break;
+        }
+    }
+}
+
+void ReleaseKey(EmuWindow& emu_window,HostDeviceKey key) {
+    auto target = key_map.find(key);
+    if (target == key_map.end())
+        return;
+
+    if (target->second.direct) {
+        emu_window.ButtonReleased({{target->second.target.direct_target_hex}});
+    } else {
+        switch (target->second.target.indirect_target) {
+        case IndirectTarget::CirclePadUp:
+            circle_pad_up = false;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadDown:
+            circle_pad_down = false;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadLeft:
+            circle_pad_left = false;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadRight:
+            circle_pad_right = false;
+            UpdateCirclePad(emu_window);
+            break;
+        case IndirectTarget::CirclePadModifier:
+            circle_pad_modifier = false;
+            UpdateCirclePad(emu_window);
+            break;
+        }
+    }
 }
 
 }