Redo layer creation to create a sub layer if needed

Author: madsmtm

CHANGELOG.md

@@ -3,6 +3,11 @@
 - Make `Layer`'s implementation details private; it is now a struct with `as_ptr` and `is_existing` accessor methods.
 - Add support for tvOS, watchOS and visionOS.
 - Use `objc2` internally.
+- Move `Layer` constructors to the type itself.
+  - `appkit::metal_layer_from_ns_view` is now `Layer::from_ns_view`.
+  - `uikit::metal_layer_from_ui_view` is now `Layer::from_ui_view`.
+- Added `Layer::from_layer` to construct a `Layer` from a `CALayer` directly.
+- Fixed layers not automatically resizing to match the super layer they were created from.
 
 # 0.4.0 (2023-10-31)
 - Update `raw-window-handle` dep to `0.6.0`.

Cargo.toml

@@ -2,7 +2,6 @@
 name = "raw-window-metal"
 version = "0.4.0"
 license = "MIT OR Apache-2.0"
-authors = ["The Gfx-rs Developers"]
 edition = "2021"
 description = "Interop library between Metal and raw-window-handle"
 documentation = "https://docs.rs/raw-window-metal"
@@ -12,37 +11,31 @@ keywords = ["window", "metal", "graphics"]
 categories = ["game-engines", "graphics"]
 exclude = [".github/*"]
 
-[dependencies]
-raw-window-handle = "0.6.0"
-
 [target.'cfg(target_vendor = "apple")'.dependencies]
 objc2 = "0.5.2"
 objc2-foundation = { version = "0.2.2", features = [
-    "NSObjCRuntime",
+    "NSDictionary",
     "NSGeometry",
+    "NSKeyValueObserving",
+    "NSObjCRuntime",
+    "NSString",
+    "NSThread",
+    "NSValue",
 ] }
 objc2-quartz-core = { version = "0.2.2", features = [
     "CALayer",
     "CAMetalLayer",
     "objc2-metal",
 ] }
 
-[target.'cfg(target_os = "macos")'.dependencies]
-objc2-app-kit = { version = "0.2.2", features = [
-    "NSResponder",
-    "NSView",
-    "NSWindow",
-    "objc2-quartz-core",
-] }
+[dev-dependencies]
+raw-window-handle = "0.6.0"
 
-[target.'cfg(all(target_vendor = "apple", not(target_os = "macos")))'.dependencies]
-objc2-ui-kit = { version = "0.2.2", features = [
-    "UIResponder",
-    "UIView",
-    "UIWindow",
-    "UIScreen",
-    "objc2-quartz-core",
-] }
+[target.'cfg(target_os = "macos")'.dev-dependencies]
+objc2-app-kit = { version = "0.2.2", features = ["NSResponder", "NSView"] }
+
+[target.'cfg(all(target_vendor = "apple", not(target_os = "macos")))'.dev-dependencies]
+objc2-ui-kit = { version = "0.2.2", features = ["UIResponder", "UIView"] }
 
 [package.metadata.docs.rs]
 targets = [

README.md

@@ -31,8 +31,6 @@ raw-window-metal = "0.4"
 `CAMetalLayer` is the common entrypoint for graphics APIs (e.g `gfx` or `MoltenVK`), but the handles provided by window libraries may not include such a layer.
 This library may extract either this layer or allocate a new one.
 
-Code is mostly extracted from the `gfx-backend-metal` crate.
-
 ## License
 
 Licensed under either of