Split dpi module out into a separate crate (#3518)

Co-authored-by: John Nunley <dev@notgull.net>

CHANGELOG.md

@@ -11,6 +11,7 @@ Unreleased` header.
 
 # Unreleased
 
+- Move `dpi` types to its own crate, and re-export it from the root crate.
 - On Wayland, fix DeviceEvent::Motion not being sent
 - On X11, don't require XIM to run.
 - On X11, fix xkb state not being updated correctly sometimes leading to wrong input.

Cargo.toml

@@ -3,14 +3,14 @@ name = "winit"
 version = "0.29.10"
 authors = ["The winit contributors", "Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform window creation library."
-edition = "2021"
 keywords = ["windowing"]
-license = "Apache-2.0"
 readme = "README.md"
-repository = "https://github.com/rust-windowing/winit"
 documentation = "https://docs.rs/winit"
 categories = ["gui"]
-rust-version = "1.70.0"
+rust-version.workspace = true
+repository.workspace = true
+license.workspace = true
+edition.workspace = true
 
 [package.metadata.docs.rs]
 features = [
@@ -22,7 +22,6 @@ features = [
  # Enabled to get docs to compile
  "android-native-activity",
 ]
-default-target = "x86_64-unknown-linux-gnu"
 # These are all tested in CI
 targets = [
  # Windows
@@ -53,8 +52,8 @@ wayland-csd-adwaita-crossfont = ["sctk-adwaita", "sctk-adwaita/crossfont"]
 wayland-csd-adwaita-notitle = ["sctk-adwaita"]
 android-native-activity = ["android-activity/native-activity"]
 android-game-activity = ["android-activity/game-activity"]
-serde = ["dep:serde", "cursor-icon/serde", "smol_str/serde"]
-mint = ["dep:mint"]
+serde = ["dep:serde", "cursor-icon/serde", "smol_str/serde", "dpi/serde"]
+mint = ["dpi/mint"]
 rwh_04 = ["dep:rwh_04", "ndk/rwh_04"]
 rwh_05 = ["dep:rwh_05", "ndk/rwh_05"]
 rwh_06 = ["dep:rwh_06", "ndk/rwh_06"]
@@ -66,12 +65,12 @@ cfg_aliases = "0.2.0"
 bitflags = "2"
 cursor-icon = "1.1.0"
 log = "0.4"
-mint = { version = "0.5.6", optional = true }
 rwh_04 = { package = "raw-window-handle", version = "0.4", optional = true }
 rwh_05 = { package = "raw-window-handle", version = "0.5.2", features = ["std"], optional = true }
 rwh_06 = { package = "raw-window-handle", version = "0.6", features = ["std"], optional = true }
-serde = { version = "1", optional = true, features = ["serde_derive"] }
+serde = { workspace = true, optional = true }
 smol_str = "0.2.0"
+dpi = { path = "dpi" }
 
 [dev-dependencies]
 image = { version = "0.24.0", default-features = false, features = ["png"] }
@@ -256,11 +255,23 @@ concurrent-queue = { version = "2", default-features = false }
 console_log = "1"
 web-sys = { version = "0.3.22", features = ['CanvasRenderingContext2d'] }
 
+[[example]]
+doc-scrape-examples = true
+name = "window"
+
 [workspace]
+resolver = "2"
 members = [
+ "dpi",
  "run-wasm",
 ]
 
-[[example]]
-doc-scrape-examples = true
-name = "window"
+[workspace.package]
+rust-version = "1.70.0"
+repository = "https://github.com/rust-windowing/winit"
+license = "Apache-2.0"
+edition = "2021"
+
+[workspace.dependencies]
+serde = { version = "1", features = ["serde_derive"] }
+mint = "0.5.6"

dpi/Cargo.toml

@@ -0,0 +1,39 @@
+[package]
+name = "dpi"
+version = "0.0.0"
+description = "Types for handling UI scaling"
+keywords = ["DPI", "HiDPI", "scale-factor"]
+categories = ["gui"]
+rust-version.workspace = true
+repository.workspace = true
+license.workspace = true
+edition.workspace = true
+
+[features]
+serde = ["dep:serde"]
+mint = ["dep:mint"]
+
+[dependencies]
+serde = { workspace = true, optional = true }
+mint = { workspace = true, optional = true }
+
+[package.metadata.docs.rs]
+features = ["serde", "mint"]
+# These are all tested in CI
+targets = [
+ # Windows
+ "i686-pc-windows-msvc",
+ "x86_64-pc-windows-msvc",
+ # macOS
+ "x86_64-apple-darwin",
+ # Unix (X11 & Wayland)
+ "i686-unknown-linux-gnu",
+ "x86_64-unknown-linux-gnu",
+ # iOS
+ "x86_64-apple-ios",
+ # Android
+ "aarch64-linux-android",
+ # Web
+ "wasm32-unknown-unknown",
+]
+rustdoc-args = ["--cfg", "docsrs"]