Use more generic 'hooks' for each input device's actions

1 files changed, 66 insertions, 0 deletions

diff --git a/src/input/input_hook.cpp b/src/input/input_hook.cpp
new file mode 100644
index 00000000..d22a0b7a
--- /dev/null
+++ b/src/input/input_hook.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2024 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#include "input_hook.hpp"
+
+#include <functional>
+#include <optional>
+#include "hal/lv_hal_indev.h"
+
+namespace input {
+
+Hook::Hook(HookCb fn) : default_(fn), override_() {}
+
+auto Hook::invoke(lv_indev_data_t* d) -> void {
+  if (override_) {
+    std::invoke(*override_, d);
+  } else if (default_) {
+    std::invoke(*default_, d);
+  }
+}
+
+auto Hook::override(HookCb fn) -> void {
+  override_ = fn;
+}
+
+TriggerHooks::TriggerHooks(HookCb click, HookCb long_press, HookCb repeat)
+    : click_(click), long_press_(long_press), repeat_(repeat) {}
+
+auto TriggerHooks::update(bool pressed, lv_indev_data_t* d) -> void {
+  switch (trigger_.update(pressed)) {
+    case Trigger::State::kClick:
+      click_.invoke(d);
+      break;
+    case Trigger::State::kLongPress:
+      long_press_.invoke(d);
+      break;
+    case Trigger::State::kRepeatPress:
+      repeat_.invoke(d);
+      break;
+    case Trigger::State::kNone:
+    default:
+      break;
+  }
+}
+
+auto TriggerHooks::override(Trigger::State s, HookCb fn) -> void {
+  switch (s) {
+    case Trigger::State::kClick:
+      click_.override(fn);
+      break;
+    case Trigger::State::kLongPress:
+      long_press_.override(fn);
+      break;
+    case Trigger::State::kRepeatPress:
+      repeat_.override(fn);
+      break;
+    case Trigger::State::kNone:
+    default:
+      break;
+  }
+}
+
+}  // namespace input