118 lines
3.2 KiB
Rust
118 lines
3.2 KiB
Rust
use core::ffi::c_void;
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use core::num::NonZeroIsize;
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use core::ptr::NonNull;
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use super::DisplayHandle;
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/// Raw display handle for Windows.
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///
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/// It can be used regardless of Windows window backend.
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#[non_exhaustive]
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub struct WindowsDisplayHandle {}
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impl WindowsDisplayHandle {
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/// Create a new empty display handle.
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///
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///
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/// # Example
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///
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/// ```
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/// # use raw_window_handle::WindowsDisplayHandle;
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/// let handle = WindowsDisplayHandle::new();
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/// ```
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pub fn new() -> Self {
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Self {}
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}
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}
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impl DisplayHandle<'static> {
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/// Create a Windows-based display handle.
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///
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/// As no data is borrowed by this handle, it is completely safe to create. This function
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/// may be useful to windowing framework implementations that want to avoid unsafe code.
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///
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/// # Example
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///
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/// ```
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/// # use raw_window_handle::{DisplayHandle, HasDisplayHandle};
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/// # fn do_something(rwh: impl HasDisplayHandle) { let _ = rwh; }
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/// let handle = DisplayHandle::windows();
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/// do_something(handle);
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/// ```
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pub fn windows() -> Self {
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// SAFETY: No data is borrowed.
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unsafe { Self::borrow_raw(WindowsDisplayHandle::new().into()) }
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}
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}
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/// Raw window handle for Win32.
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#[non_exhaustive]
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub struct Win32WindowHandle {
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/// A Win32 `HWND` handle.
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pub hwnd: NonZeroIsize,
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/// The `GWLP_HINSTANCE` associated with this type's `HWND`.
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pub hinstance: Option<NonZeroIsize>,
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}
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impl Win32WindowHandle {
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/// Create a new handle to a window.
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///
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/// # Safety
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///
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/// It is assumed that the Win32 handle belongs to the current thread. This
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/// is necessary for the handle to be considered "valid" in all cases.
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///
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/// # Example
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///
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/// ```
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/// # use core::num::NonZeroIsize;
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/// # use raw_window_handle::Win32WindowHandle;
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/// # struct HWND(isize);
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/// #
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/// let window: HWND;
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/// # window = HWND(1);
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/// let mut handle = Win32WindowHandle::new(NonZeroIsize::new(window.0).unwrap());
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/// // Optionally set the GWLP_HINSTANCE.
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/// # #[cfg(only_for_showcase)]
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/// let hinstance = NonZeroIsize::new(unsafe { GetWindowLongPtrW(window, GWLP_HINSTANCE) }).unwrap();
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/// # let hinstance = None;
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/// handle.hinstance = hinstance;
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/// ```
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pub fn new(hwnd: NonZeroIsize) -> Self {
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Self {
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hwnd,
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hinstance: None,
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}
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}
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}
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/// Raw window handle for WinRT.
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#[non_exhaustive]
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub struct WinRtWindowHandle {
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/// A WinRT `CoreWindow` handle.
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pub core_window: NonNull<c_void>,
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}
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impl WinRtWindowHandle {
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/// Create a new handle to a window.
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///
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///
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/// # Example
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///
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/// ```
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/// # use core::ptr::NonNull;
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/// # use raw_window_handle::WinRtWindowHandle;
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/// # type CoreWindow = ();
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/// #
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/// let window: NonNull<CoreWindow>;
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/// # window = NonNull::from(&());
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/// let handle = WinRtWindowHandle::new(window.cast());
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/// ```
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pub fn new(core_window: NonNull<c_void>) -> Self {
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Self { core_window }
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}
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}
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