UIKit interop touches (#682)

skiko/RELEASE.md

@@ -19,11 +19,16 @@ build configuration.
 
 ## Publishing
 
-##### Publish to Maven local
+##### Publish JVM target to Maven local
 ```
 ./gradlew publishToMavenLocal
 ```
 
+##### Publish all targets to Maven Local
+```
+./gradlew publishToMavenLocal -Pskiko.native.enabled=true -Pskiko.wasm.enabled=true -Pskiko.android.enabled=true
+```
+
 ##### Publish to `build/repo` directory
 ```
 ./gradlew publishToBuildRepo

skiko/build.gradle.kts

@@ -441,6 +441,14 @@ fun configureNativeTarget(os: OS, arch: Arch, target: KotlinNativeTarget) {
     val allLibraries = skiaStaticLibraries(skiaDir, targetString) + bridgesLibrary
 
 
+    if (os == OS.IOS) {
+        target.compilations.getByName("main") {
+            val uikit by cinterops.creating {
+                defFile("src/iosMain/objc/ios.def")
+                packageName("org.jetbrains.skiko.objc")
+            }
+        }
+    }
     val skiaBinDir = "$skiaDir/out/${buildType.id}-$targetString"
     val linkerFlags = when (os) {
         OS.MacOS -> mutableListOf("-linker-option", "-framework", "-linker-option", "Metal",

skiko/gradle.properties

@@ -20,3 +20,6 @@ dependencies.skia.android-arm64=m110-ad42464-1
 org.gradle.jvmargs=-Xmx3G -XX:MaxMetaspaceSize=512m
 kotlin.native.cacheKind.macosX64=none
 kotlin.native.cacheKind.iosX64=none
+
+# This line needs for maven publication with ObjC defFile. Should be removed after Kotlin 1.8.20
+kotlin.mpp.enableCInteropCommonization=true

skiko/src/iosMain/kotlin/org/jetbrains/skiko/SkiaLayer.ios.kt

@@ -7,6 +7,7 @@ import org.jetbrains.skiko.context.MetalContextHandler
 import org.jetbrains.skiko.redrawer.MetalRedrawer
 import platform.UIKit.*
 import kotlin.system.getTimeNanos
+import org.jetbrains.skia.*
 
 actual open class SkiaLayer {
 

skiko/src/iosMain/kotlin/org/jetbrains/skiko/SkikoUIView.kt

 package org.jetbrains.skiko
 
 import kotlinx.cinterop.*
+import org.jetbrains.skia.Point
 import org.jetbrains.skia.Rect
 import platform.CoreGraphics.*
 import platform.Foundation.*
@@ -9,9 +10,14 @@ import platform.darwin.NSInteger
 import kotlin.math.max
 import kotlin.math.min
 
+/*
+ TODO: remove org.jetbrains.skiko.objc.UIViewExtensionProtocol after Kotlin 1.8.20
+ https://youtrack.jetbrains.com/issue/KT-40426
+*/
 @Suppress("CONFLICTING_OVERLOADS")
 @ExportObjCClass
-class SkikoUIView : UIView, UIKeyInputProtocol, UITextInputProtocol {
+class SkikoUIView : UIView, UIKeyInputProtocol, UITextInputProtocol,
+    org.jetbrains.skiko.objc.UIViewExtensionProtocol {
     @OverrideInit
     constructor(frame: CValue<CGRect>) : super(frame)
 
@@ -19,6 +25,7 @@ class SkikoUIView : UIView, UIKeyInputProtocol, UITextInputProtocol {
     constructor(coder: NSCoder) : super(coder)
 
     private var skiaLayer: SkiaLayer? = null
+    private lateinit var _pointInside: (Point, UIEvent?) -> Boolean
     private var _inputDelegate: UITextInputDelegateProtocol? = null
     private var _currentTextMenuActions: TextActions? = null
     var currentKeyboardType: UIKeyboardType = UIKeyboardTypeDefault
@@ -30,8 +37,13 @@ class SkikoUIView : UIView, UIKeyInputProtocol, UITextInputProtocol {
     var currentAutocapitalizationType: UITextAutocapitalizationType = UITextAutocapitalizationType.UITextAutocapitalizationTypeSentences
     var currentAutocorrectionType: UITextAutocorrectionType = UITextAutocorrectionType.UITextAutocorrectionTypeYes
 
-    constructor(skiaLayer: SkiaLayer, frame: CValue<CGRect> = CGRectNull.readValue()) : super(frame) {
+    constructor(
+        skiaLayer: SkiaLayer,
+        frame: CValue<CGRect> = CGRectNull.readValue(),
+        pointInside: (Point, UIEvent?) -> Boolean = {_,_-> true }
+    ) : super(frame) {
         this.skiaLayer = skiaLayer
+        _pointInside = pointInside
     }
 
     /**
@@ -157,6 +169,14 @@ class SkikoUIView : UIView, UIKeyInputProtocol, UITextInputProtocol {
         super.pressesEnded(presses, withEvent)
     }
 
+    /**
+     * https://developer.apple.com/documentation/uikit/uiview/1622533-point
+     */
+    override fun pointInside(point: CValue<CGPoint>, withEvent: UIEvent?): Boolean {
+        val skiaPoint: Point = point.useContents { Point(x.toFloat(), y.toFloat()) }
+        return _pointInside(skiaPoint, withEvent)
+    }
+
     override fun touchesBegan(touches: Set<*>, withEvent: UIEvent?) {
         super.touchesBegan(touches, withEvent)
         sendTouchEventToSkikoView(touches, SkikoTouchEventKind.STARTED)

skiko/src/iosMain/objc/ios.def

+package = org.jetbrains.skiko.objc
+language = Objective-C
+---
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIView.h>
+
+// This protocol helps to override ObjC UIView extensions in Kotlin
+@protocol UIViewExtension
+- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event;
+@end
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