Reorganize codebase into modular structure

src/platform/windows/state.rs

@@ -0,0 +1,64 @@
+// Windows platform state management
+
+use std::sync::{Mutex, atomic::{AtomicBool, AtomicPtr}};
+use std::time::Instant;
+use winapi::{
+    shared::windef::POINT,
+    shared::minwindef::DWORD,
+};
+use ::image::RgbaImage;
+use once_cell::sync::{Lazy, OnceCell};
+
+use super::types::*;
+
+// --- Thread-Safe Static Variables ---
+
+// Use AtomicBool for simple flags
+pub static CURSOR_HIDDEN: AtomicBool = AtomicBool::new(false);
+pub static CTRL_HANDLER_REGISTERED: AtomicBool = AtomicBool::new(false);
+
+// Use Lazy<Mutex<T>> for complex Option types
+pub static ORIGINAL_CURSORS: Lazy<Mutex<Option<Vec<(DWORD, SyncHCURSOR)>>>> = Lazy::new(|| Mutex::new(None));
+pub static CURRENT_CURSOR_IMAGE: Lazy<Mutex<Option<RgbaImage>>> = Lazy::new(|| Mutex::new(None));
+pub static LAST_CURSOR_POS: Lazy<Mutex<Option<POINT>>> = Lazy::new(|| Mutex::new(None));
+
+// Use Lazy<Mutex<Option<Handle>>> for WinAPI handles with our thread-safe wrappers
+pub static CURSOR_WINDOW: Lazy<Mutex<Option<SyncHWND>>> = Lazy::new(|| Mutex::new(None));
+pub static CURSOR_BITMAP: Lazy<Mutex<Option<SyncHBITMAP>>> = Lazy::new(|| Mutex::new(None));
+pub static CURSOR_DC: Lazy<Mutex<Option<SyncHDC>>> = Lazy::new(|| Mutex::new(None));
+
+// Mouse hook related variables
+pub static MOUSE_HOOK_HANDLE: Lazy<Mutex<Option<SyncHHOOK>>> = Lazy::new(|| Mutex::new(None));
+// This one is for CallNextHookEx to avoid locking inside the hook callback
+pub static CURRENT_HOOK_FOR_CALLBACK: AtomicPtr<std::os::raw::c_void> =
+    AtomicPtr::new(std::ptr::null_mut());
+pub static LAST_MOUSE_MOVE_TIME: Lazy<Mutex<Option<Instant>>> = Lazy::new(|| Mutex::new(None));
+
+// Use OnceCell for INIT to avoid `static mut`
+pub static INIT: OnceCell<()> = OnceCell::new();
+
+// Reset system cursors using the Windows API
+pub fn reset_system_cursors() {
+    unsafe {
+        // Use both versions for maximum compatibility
+        winapi::um::winuser::SystemParametersInfoW(
+            winapi::um::winuser::SPI_SETCURSORS,
+            0,
+            std::ptr::null_mut(),
+            0
+        );
+
+        // Import the Windows API function to reset system cursors
+        #[link(name = "user32")]
+        extern "system" {
+            fn SystemParametersInfoA(uiAction: u32, uiParam: u32, pvParam: *mut std::ffi::c_void, fWinIni: u32) -> i32;
+        }
+
+        SystemParametersInfoA(
+            SPI_SETCURSORS_A,
+            0,
+            std::ptr::null_mut(),
+            SPIF_UPDATEINIFILE | SPIF_SENDCHANGE
+        );
+    }
+}