feat: Add is_visible getter to Window (rust-windowing#61)

.changes/is-visible.md

@@ -0,0 +1,5 @@
+---
+"tao": patch
+---
+
+Add `is_visible` getter on `Window`

src/platform_impl/android/mod.rs

@@ -517,6 +517,11 @@ impl Window {
     false
   }
 
+  pub fn is_visible(&self) -> bool {
+    log::warn!("`Window::is_visible` is ignored on android");
+    false
+  }
+
   pub fn is_resizable(&self) -> bool {
     warn!("`Window::is_resizable` is ignored on android");
     false

src/platform_impl/ios/window.rs

@@ -210,6 +210,11 @@ impl Inner {
     false
   }
 
+  pub fn is_visible(&self) -> bool {
+    log::warn!("`Window::is_visible` is ignored on iOS");
+    false
+  }
+
   pub fn is_resizable(&self) -> bool {
     warn!("`Window::is_resizable` is ignored on iOS");
     false

src/platform_impl/linux/window.rs

@@ -483,6 +483,11 @@ impl Window {
     self.window.get_decorated()
   }
 
+  #[inline]
+  pub fn is_visible(&self) -> bool {
+    self.window.is_visible()
+  }
+
   pub fn drag_window(&self) -> Result<(), ExternalError> {
     if let Err(e) = self
       .window_requests_tx

src/platform_impl/macos/window.rs

@@ -749,12 +749,19 @@ impl UnownedWindow {
     self.is_zoomed()
   }
 
+  #[inline]
+  pub fn is_visible(&self) -> bool {
+    let is_visible: BOOL = unsafe { msg_send![*self.ns_window, isVisible] };
+    is_visible == YES
+  }
+
   #[inline]
   pub fn is_resizable(&self) -> bool {
     let is_resizable: BOOL = unsafe { msg_send![*self.ns_window, isResizable] };
     is_resizable == YES
   }
 
+  #[inline]
   pub fn is_decorated(&self) -> bool {
     let current_mask = unsafe { self.ns_window.styleMask() };
     if current_mask

src/platform_impl/windows/util.rs

@@ -13,7 +13,7 @@ use crate::{dpi::PhysicalSize, window::CursorIcon};
 use winapi::{
   ctypes::wchar_t,
   shared::{
-    minwindef::{BOOL, DWORD, UINT},
+    minwindef::{BOOL, DWORD, TRUE, UINT},
     windef::{DPI_AWARENESS_CONTEXT, HMONITOR, HWND, LPRECT, RECT},
   },
   um::{
@@ -199,6 +199,10 @@ pub fn is_focused(window: HWND) -> bool {
   window == unsafe { winuser::GetActiveWindow() }
 }
 
+pub fn is_visible(window: HWND) -> bool {
+  unsafe { winuser::IsWindowVisible(window) == TRUE }
+}
+
 impl CursorIcon {
   pub(crate) fn to_windows_cursor(self) -> *const wchar_t {
     match self {

src/platform_impl/windows/window.rs

@@ -442,11 +442,17 @@ impl Window {
     window_state.window_flags.contains(WindowFlags::RESIZABLE)
   }
 
+  #[inline]
   pub fn is_decorated(&self) -> bool {
     let window_state = self.window_state.lock();
     window_state.window_flags.contains(WindowFlags::DECORATIONS)
   }
 
+  #[inline]
+  pub fn is_visible(&self) -> bool {
+    util::is_visible(self.window.0)
+  }
+
   #[inline]
   pub fn fullscreen(&self) -> Option<Fullscreen> {
     let window_state = self.window_state.lock();

src/window.rs

@@ -688,6 +688,16 @@ impl Window {
     self.window.is_maximized()
   }
 
+  /// Gets the window's current vibility state.
+  ///
+  /// ## Platform-specific
+  ///
+  /// - **iOS / Android:** Unsupported.
+  #[inline]
+  pub fn is_visible(&self) -> bool {
+    self.window.is_visible()
+  }
+
   /// Gets the window's current resizable state.
   ///
   /// ## Platform-specific