Add image support for uikit feature backends

.github/workflows/ci.yml

@@ -58,9 +58,49 @@ jobs:
       with:
         command: build
         args: --features webview --example webview_custom_protocol
-    # fails because it needs uikit, which is not
-    # building for me
-    #- uses: actions-rs/cargo@v1
-    #  with:
-    #    command: build
-    #    args: --example ios-beta
+    - uses: actions-rs/toolchain@v1
+      with:
+          toolchain: stable
+          override: true
+          target: x86_64-apple-ios
+    # Since it's all Objective-C message passing under the hood, we're
+    # really just looking for whether we've broken the iOS build. It is likely
+    # that more robust tests/checking infrastructure should exist for this side
+    # of things as the iOS portion gets iterated on.
+    #
+    # (e.g, this at the moment will not catch invalid selector calls, like if an appkit-specific
+    # selector is used for something on iOS)
+    - uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --target x86_64-apple-ios --example ios-beta --no-default-features --features uikit,autolayout
+
+  ios:
+    name: Check that iOS tests pass via dinghy.
+    runs-on: macos-latest
+    steps:
+
+    - name: Install cargo-dinghy
+      uses: baptiste0928/cargo-install@v1
+      with:
+        crate: cargo-dinghy
+
+    - uses: actions/checkout@v2
+    - uses: actions-rs/toolchain@v1
+      with:
+          toolchain: stable
+          override: true
+          target: x86_64-apple-ios
+
+    - name: Launch XCode Simulator and prepare Dinghy
+      run: |
+        # Get system info
+        xcrun simctl list runtimes
+        # Launch the simulator
+        RUNTIME_ID=$(xcrun simctl list runtimes | grep iOS | cut -d ' ' -f 7 | tail -1)
+        SIM_ID=$(xcrun simctl create My-iphone-se com.apple.CoreSimulator.SimDeviceType.iPhone-SE $RUNTIME_ID)
+        xcrun simctl boot $SIM_ID
+
+    - name: Dinghy test
+      run: |
+        cargo dinghy --platform auto-ios-x86_64 test --no-default-features --features uikit,autolayout

Cargo.toml

@@ -65,3 +65,37 @@ required-features = ["webview"]
 [[example]]
 name = "ios-beta"
 required-features = ["uikit", "autolayout"]
+
+[[example]]
+name = "calculator"
+required-features = ["appkit"]
+[[example]]
+name = "todos_list"
+required-features = ["appkit"]
+[[example]]
+name = "animation"
+required-features = ["appkit"]
+[[example]]
+name = "autolayout"
+required-features = ["appkit"]
+[[example]]
+name = "custom_image_drawing"
+required-features = ["appkit"]
+[[example]]
+name = "text_input"
+required-features = ["appkit"]
+[[example]]
+name = "defaults"
+required-features = ["appkit"]
+[[example]]
+name = "frame_layout"
+required-features = ["appkit"]
+[[example]]
+name = "window"
+required-features = ["appkit"]
+[[example]]
+name = "window_delegate"
+required-features = ["appkit"]
+[[example]]
+name = "window_controller"
+required-features = ["appkit"]

examples/ios-beta/main.rs

@@ -3,6 +3,7 @@ use std::sync::RwLock;
 use cacao::uikit::{App, AppDelegate, Scene, SceneConfig, SceneConnectionOptions, SceneSession, Window, WindowSceneDelegate};
 
 use cacao::color::Color;
+use cacao::image::{Image, ImageView};
 use cacao::layout::{Layout, LayoutConstraint};
 use cacao::view::{View, ViewController, ViewDelegate};
 
@@ -19,7 +20,8 @@ impl AppDelegate for TestApp {
 pub struct RootView {
     pub red: View,
     pub green: View,
-    pub blue: View
+    pub blue: View,
+    pub image: ImageView
 }
 
 impl ViewDelegate for RootView {
@@ -36,6 +38,11 @@ impl ViewDelegate for RootView {
         self.blue.set_background_color(Color::SystemBlue);
         view.add_subview(&self.blue);
 
+        let image_bytes = include_bytes!("../../test-data/favicon.ico");
+        self.image = ImageView::new();
+        self.image.set_image(&Image::with_data(image_bytes));
+        view.add_subview(&self.image);
+
         LayoutConstraint::activate(&[
             self.red.top.constraint_equal_to(&view.top).offset(16.),
             self.red.leading.constraint_equal_to(&view.leading).offset(16.),

examples/ios-beta/readme.md

@@ -7,7 +7,7 @@ Since this needs to run in an iOS simulator or on a device, you can't run it lik
 - Start a simulator (Simulator.app).
 - `cargo install cargo-bundle`
 - `cargo bundle --example ios-beta --no-default-features --features uikit,autolayout --target x86_64-apple-ios`
-- `xcrun simctl install booted target/x86_64-apple-ios/debug/examples/bundle/ios/cacao-ios-beta.app`
+- `xcrun simctl install booted target/x86_64-apple-ios/debug/examples/bundle/ios/ios-beta.app`
 - `xcrun simctl launch --console booted com.cacao.ios-test`
 
 ## Current Support

src/image/image.rs

@@ -1,4 +1,4 @@
-use objc::runtime::Object;
+use objc::runtime::{Class, Object};
 use objc_id::ShareId;
 
 use objc::{class, msg_send, sel, sel_impl};
@@ -122,6 +122,15 @@ pub struct DrawConfig {
 pub struct Image(pub ShareId<Object>);
 
 impl Image {
+    fn class() -> &'static Class {
+        #[cfg(feature = "appkit")]
+        let class = class!(NSImage);
+        #[cfg(all(feature = "uikit", not(feature = "appkit")))]
+        let class = class!(UIImage);
+
+        class
+    }
+
     /// Wraps a system-returned image, e.g from QuickLook previews.
     pub fn with(image: id) -> Self {
         Image(unsafe { ShareId::from_ptr(image) })
@@ -132,7 +141,7 @@ impl Image {
         let file_path = NSString::new(path);
 
         Image(unsafe {
-            let alloc: id = msg_send![class!(NSImage), alloc];
+            let alloc: id = msg_send![Self::class(), alloc];
             ShareId::from_ptr(msg_send![alloc, initWithContentsOfFile: file_path])
         })
     }
@@ -143,7 +152,7 @@ impl Image {
         let data = NSData::with_slice(data);
 
         Image(unsafe {
-            let alloc: id = msg_send![class!(NSImage), alloc];
+            let alloc: id = msg_send![Self::class(), alloc];
             ShareId::from_ptr(msg_send![alloc, initWithData: data])
         })
     }
@@ -157,7 +166,7 @@ impl Image {
         Image(unsafe {
             ShareId::from_ptr({
                 let icon = icon.to_id();
-                msg_send![class!(NSImage), imageNamed: icon]
+                msg_send![Self::class(), imageNamed: icon]
             })
         })
     }
@@ -179,13 +188,13 @@ impl Image {
                 true => {
                     let icon = NSString::new(icon.to_sfsymbol_str());
                     let desc = NSString::new(accessibility_description);
-                    msg_send![class!(NSImage), imageWithSystemSymbolName:&*icon
+                    msg_send![Self::class(), imageWithSystemSymbolName:&*icon
                         accessibilityDescription:&*desc]
                 },
 
                 false => {
                     let icon = icon.to_id();
-                    msg_send![class!(NSImage), imageNamed: icon]
+                    msg_send![Self::class(), imageNamed: icon]
                 }
             })
         })
@@ -213,7 +222,7 @@ impl Image {
                 true => {
                     let icon = NSString::new(symbol.to_str());
                     let desc = NSString::new(accessibility_description);
-                    msg_send![class!(NSImage), imageWithSystemSymbolName:&*icon
+                    msg_send![Self::class(), imageWithSystemSymbolName:&*icon
                         accessibilityDescription:&*desc]
                 },
 
@@ -267,7 +276,7 @@ impl Image {
         let block = block.copy();
 
         Image(unsafe {
-            let img: id = msg_send![class!(NSImage), imageWithSize:target_frame.size
+            let img: id = msg_send![Self::class(), imageWithSize:target_frame.size
                 flipped:YES
                 drawingHandler:block
             ];
@@ -276,3 +285,15 @@ impl Image {
         })
     }
 }
+
+#[test]
+fn test_image_from_bytes() {
+    let image_bytes = include_bytes!("../../test-data/favicon.ico");
+    let image = Image::with_data(image_bytes);
+}
+// It's unclear where the file is on the ios simulator.
+#[test]
+#[cfg(target_os = "macos")]
+fn test_image_from_file() {
+    let image = Image::with_contents_of_file("./test-data/favicon.ico");
+}

src/image/mod.rs

@@ -17,11 +17,11 @@ mod appkit;
 #[cfg(feature = "appkit")]
 use appkit::register_image_view_class;
 
-//#[cfg(feature = "uikit")]
-//mod uikit;
+#[cfg(feature = "uikit")]
+mod uikit;
 
-//#[cfg(feature = "uikit")]
-//use uikit::register_image_view_class;
+#[cfg(all(feature = "uikit", not(feature = "appkit")))]
+use uikit::register_image_view_class;
 
 mod image;
 pub use image::{DrawConfig, Image, ResizeBehavior};
@@ -194,3 +194,12 @@ impl Drop for ImageView {
         }*/
     }
 }
+
+#[test]
+fn test_image() {
+    let image_view = ImageView::new();
+    image_view.set_background_color(Color::SystemBlue);
+    let image_bytes = include_bytes!("../../test-data/favicon.ico");
+    let image = Image::with_data(image_bytes);
+    image_view.set_image(&image);
+}

src/image/uikit.rs

@@ -5,41 +5,22 @@ use objc::runtime::{Class, Object, Sel, BOOL};
 use objc::{class, sel, sel_impl};
 use objc_id::Id;
 
-use crate::foundation::{id, YES, NO, NSUInteger};
-use crate::dragdrop::DragInfo;
-use crate::view::{VIEW_DELEGATE_PTR, ViewDelegate};
+use crate::foundation::{id, NSUInteger, NO, YES};
 use crate::utils::load;
+use crate::view::{ViewDelegate, VIEW_DELEGATE_PTR};
 
 /// Injects an `NSView` subclass. This is used for the default views that don't use delegates - we
 /// have separate classes here since we don't want to waste cycles on methods that will never be
 /// used if there's no delegates.
-pub(crate) fn register_view_class() -> *const Class {
+pub(crate) fn register_image_view_class() -> *const Class {
     static mut VIEW_CLASS: *const Class = 0 as *const Class;
     static INIT: Once = Once::new();
 
     INIT.call_once(|| unsafe {
-        let superclass = class!(UIView);
-        let mut decl = ClassDecl::new("RSTView", superclass).unwrap();
+        let superclass = class!(UIImageView);
+        let mut decl = ClassDecl::new("RSTImageView", superclass).expect("Failed to get RSTVIEW");
         VIEW_CLASS = decl.register();
     });
 
     unsafe { VIEW_CLASS }
 }
-
-/// Injects an `NSView` subclass, with some callback and pointer ivars for what we
-/// need to do.
-pub(crate) fn register_view_class_with_delegate<T: ViewDelegate>() -> *const Class {
-    static mut VIEW_CLASS: *const Class = 0 as *const Class;
-    static INIT: Once = Once::new();
-
-    INIT.call_once(|| unsafe {
-        let superclass = class!(UIView);
-        let mut decl = ClassDecl::new("RSTViewWithDelegate", superclass).unwrap();
-        decl.add_ivar::<usize>(VIEW_DELEGATE_PTR);
-        VIEW_CLASS = decl.register();
-    });
-
-    unsafe {
-        VIEW_CLASS
-    }
-}

src/layout/constraint.rs

@@ -10,6 +10,7 @@ use objc_id::ShareId;
 
 use crate::foundation::{id, NO, YES};
 
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 use super::LayoutConstraintAnimatorProxy;
 
 /// A wrapper for `NSLayoutConstraint`. This both acts as a central path through which to activate
@@ -31,14 +32,18 @@ pub struct LayoutConstraint {
     pub priority: f64,
 
     /// An animator proxy that can be used inside animation contexts.
+    /// This is currently only supported on macOS with the `appkit` feature.
+    #[cfg(all(feature = "appkit", target_os = "macos"))]
     pub animator: LayoutConstraintAnimatorProxy
 }
 
 impl LayoutConstraint {
     /// An internal method for wrapping existing constraints.
     pub(crate) fn new(object: id) -> Self {
         LayoutConstraint {
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: LayoutConstraintAnimatorProxy::new(object),
+
             constraint: unsafe { ShareId::from_ptr(object) },
             offset: 0.0,
             multiplier: 0.0,
@@ -55,7 +60,9 @@ impl LayoutConstraint {
         }
 
         LayoutConstraint {
+            #[cfg(all(feature = "appkit", target_os = "macos"))]
             animator: self.animator,
+
             constraint: self.constraint,
             offset: offset,
             multiplier: self.multiplier,
@@ -94,18 +101,16 @@ impl LayoutConstraint {
     //
     // I regret nothing, lol. If you have a better solution I'm all ears.
     pub fn activate(constraints: &[LayoutConstraint]) {
+        let ids: Vec<&Object> = constraints.into_iter().map(|constraint| &*constraint.constraint).collect();
         unsafe {
-            let ids: Vec<&Object> = constraints.into_iter().map(|constraint| &*constraint.constraint).collect();
-
             let constraints: id = msg_send![class!(NSArray), arrayWithObjects:ids.as_ptr() count:ids.len()];
             let _: () = msg_send![class!(NSLayoutConstraint), activateConstraints: constraints];
         }
     }
 
     pub fn deactivate(constraints: &[LayoutConstraint]) {
+        let ids: Vec<&Object> = constraints.into_iter().map(|constraint| &*constraint.constraint).collect();
         unsafe {
-            let ids: Vec<&Object> = constraints.into_iter().map(|constraint| &*constraint.constraint).collect();
-
             let constraints: id = msg_send![class!(NSArray), arrayWithObjects:ids.as_ptr() count:ids.len()];
             let _: () = msg_send![class!(NSLayoutConstraint), deactivateConstraints: constraints];
         }

src/layout/mod.rs

@@ -6,7 +6,10 @@
 mod traits;
 pub use traits::Layout;
 
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 mod animator;
+
+#[cfg(all(feature = "appkit", target_os = "macos"))]
 pub use animator::LayoutConstraintAnimatorProxy;
 
 #[cfg(feature = "autolayout")]

src/lib.rs

@@ -137,7 +137,7 @@ pub mod filesystem;
 pub mod foundation;
 pub mod geometry;
 
-#[cfg(feature = "appkit")]
+#[cfg(any(feature = "appkit", feature = "uikit"))]
 pub mod image;
 
 #[cfg(feature = "appkit")]