Remove the GTK backend

.github/workflows/ci.yml

@@ -100,42 +100,6 @@ jobs:
           command: test
           args: --manifest-path=Cargo.toml --features wayland --no-default-features
 
-  # we test the gtk backend as a separate job because gtk install takes
-  # a long time.
-  test-stable-gtk:
-    runs-on: ubuntu-latest
-    name: cargo clippy+test (gtk)
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: install libgtk-3-dev
-        run: |
-          sudo apt update
-          sudo apt install libgtk-3-dev
-
-      - name: install stable toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: 1.68
-          components: clippy
-          profile: minimal
-          override: true
-
-      - name: restore cache
-        uses: Swatinem/rust-cache@v1
-
-      - name: cargo clippy glazier
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: --manifest-path=Cargo.toml --all-targets --features=gtk --no-default-features -- -D warnings
-
-      - name: cargo test glazier
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --features=gtk --no-default-features --manifest-path=Cargo.toml
-
 #  test-stable-wasm:
 #    runs-on: macOS-latest
 #    name: cargo test (wasm32)
@@ -264,10 +228,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: install libgtk-dev
+      - name: install dependencies
         run: |
           sudo apt update
-          sudo apt install libgtk-3-dev libxkbcommon-dev libxkbcommon-x11-dev
+          sudo apt install libxkbcommon-dev libxkbcommon-x11-dev
         if: contains(matrix.os, 'ubuntu')
 
       - name: install stable toolchain

Cargo.toml

@@ -15,21 +15,12 @@ default-target = "x86_64-pc-windows-msvc"
 
 [features]
 default = ["x11"]
-gtk = ["cairo-rs", "gdk-sys", "glib-sys", "gtk-sys", "gtk-rs"]
-x11 = [
-    "ashpd",
-    "bindgen",
-    "futures",
-    "nix",
-    "pkg-config",
-    "x11rb",
-]
+x11 = ["ashpd", "bindgen", "futures", "nix", "pkg-config", "x11rb"]
 wayland = [
     "wayland-client",
     "wayland-protocols/client",
     "wayland-protocols/unstable_protocols",
     "nix",
-    "cairo-sys-rs",
     "rand",
     "calloop",
     "wayland-cursor",
@@ -71,7 +62,6 @@ kurbo = "0.9.0"
 
 tracing = { version = "0.1.22", features = ["log"] }
 lazy_static = "1.4.0"
-time = "0.3.0"
 cfg-if = "1.0.0"
 instant = { version = "0.1.6", features = ["wasm-bindgen"] }
 anyhow = "1.0.32"
@@ -92,10 +82,29 @@ once_cell = "1"
 
 [target.'cfg(target_os="windows")'.dependencies.winapi]
 version = "0.3.9"
-features = ["d2d1_1", "dwrite", "winbase", "libloaderapi", "errhandlingapi", "winuser",
-            "shellscalingapi", "shobjidl", "combaseapi", "synchapi", "dxgi1_3", "dcomp",
-            "d3d11", "dwmapi", "wincon", "fileapi", "processenv", "winbase", "handleapi",
-            "shellapi", "winnls"]
+features = [
+    "d2d1_1",
+    "dwrite",
+    "winbase",
+    "libloaderapi",
+    "errhandlingapi",
+    "winuser",
+    "shellscalingapi",
+    "shobjidl",
+    "combaseapi",
+    "synchapi",
+    "dxgi1_3",
+    "dcomp",
+    "d3d11",
+    "dwmapi",
+    "wincon",
+    "fileapi",
+    "processenv",
+    "winbase",
+    "handleapi",
+    "shellapi",
+    "winnls",
+]
 
 [target.'cfg(target_os="macos")'.dependencies]
 block = "0.1.6"
@@ -108,17 +117,20 @@ accesskit_macos = { version = "0.5.0", optional = true }
 
 [target.'cfg(any(target_os = "freebsd", target_os="linux", target_os="openbsd"))'.dependencies]
 ashpd = { version = "0.3.2", optional = true }
-# TODO(x11/dependencies): only use feature "xcb" if using X11
-cairo-rs = { version = "0.15.12", default_features = false, features = ["xcb"], optional = true }
-cairo-sys-rs = { version = "0.15.1", default_features = false, optional = true }
 futures = { version = "0.3.24", optional = true, features = ["executor"] }
-gdk-sys = { version = "0.15.1", optional = true }
-# `gtk` gets renamed to `gtk-rs` so that we can use `gtk` as the feature name.
-gtk-rs = { version = "0.15.5", features = ["v3_22"], package = "gtk", optional = true }
-glib-sys = { version = "0.15.10", optional = true }
-gtk-sys = { version = "0.15.3", optional = true }
+
 nix = { version = "0.25.0", optional = true }
-x11rb = { version = "0.11.1", features = ["allow-unsafe-code", "present", "render", "randr", "xfixes", "xkb", "resource_manager", "cursor", "xinput"], optional = true }
+x11rb = { version = "0.11.1", features = [
+    "allow-unsafe-code",
+    "present",
+    "render",
+    "randr",
+    "xfixes",
+    "xkb",
+    "resource_manager",
+    "cursor",
+    "xinput",
+], optional = true }
 wayland-client = { version = "0.29.5", optional = true }
 wayland-protocols = { version = "0.29.5", optional = true }
 wayland-cursor = { version = "0.29.5", optional = true }
@@ -133,7 +145,15 @@ js-sys = "0.3.44"
 
 [target.'cfg(target_arch="wasm32")'.dependencies.web-sys]
 version = "0.3.44"
-features = ["Window", "MouseEvent", "CssStyleDeclaration", "WheelEvent", "KeyEvent", "KeyboardEvent", "Navigator"]
+features = [
+    "Window",
+    "MouseEvent",
+    "CssStyleDeclaration",
+    "WheelEvent",
+    "KeyEvent",
+    "KeyboardEvent",
+    "Navigator",
+]
 
 [dev-dependencies]
 pretty_env_logger = "0.4"