More commonized rendering (#258)

samples/SkiaNativeSample/build.gradle.kts

@@ -53,7 +53,10 @@ kotlin {
             binaries {
                 executable {
                     entryPoint = "org.jetbrains.skiko.sample.main"
-                    freeCompilerArgs += listOf("-linker-option", "-framework", "-linker-option", "Metal")
+                    freeCompilerArgs += listOf(
+                        "-linker-option", "-framework", "-linker-option", "Metal",
+                        "-linker-option", "-framework", "-linker-option", "CoreText",
+                    )
                 }
             }
         }

samples/SkiaNativeSample/src/iosMain/kotlin/org/jetbrains/skiko/sample/App.ios.kt

-// Use `xcodegen` first, then `open ./SkikoSample.xcodeproj` and then Rub
-
+// Use `xcodegen` first, then `open ./SkikoSample.xcodeproj` and then Run button in XCode.
 package org.jetbrains.skiko.sample
 
 import org.jetbrains.skia.*
 import org.jetbrains.skiko.*
+import kotlinx.cinterop.*
+import platform.UIKit.*
+import platform.Foundation.*
 
-fun main(args: Array<String>) {
+fun main() {
     val paint = Paint().apply { color = Color.GREEN }
     println("Paint is $paint")
     runSkikoMain()
 }
 
+fun runSkikoMain(args: Array<String> = emptyArray()) {
+    memScoped {
+        val argc = args.size + 1
+        val argv = (arrayOf("skikoApp") + args).map { it.cstr.ptr }.toCValues()
+
+        autoreleasepool {
+            UIApplicationMain(argc, argv, null, NSStringFromClass(SkikoAppDelegate))
+        }
+    }
+}
+

skiko/src/iosMain/kotlin/org/jetbrains/skiko/App.kt → samples/SkiaNativeSample/src/iosMain/kotlin/org/jetbrains/skiko/sample/SkikoAppDelegate.kt

-package org.jetbrains.skiko
+package org.jetbrains.skiko.sample
 
 import kotlinx.cinterop.*
 import platform.Foundation.*
@@ -23,14 +23,3 @@ class SkikoAppDelegate : UIResponder, UIApplicationDelegateProtocol {
         return true
     }
 }
\ No newline at end of file
-
-fun runSkikoMain(args: Array<String> = emptyArray()) {
-    memScoped {
-        val argc = args.size + 1
-        val argv = (arrayOf("skikoApp") + args).map { it.cstr.ptr }.toCValues()
-
-        autoreleasepool {
-            UIApplicationMain(argc, argv, null, NSStringFromClass(SkikoAppDelegate))
-        }
-    }
-}
\ No newline at end of file

skiko/src/iosMain/kotlin/org/jetbrains/skiko/SkikoViewController.kt → samples/SkiaNativeSample/src/iosMain/kotlin/org/jetbrains/skiko/sample/SkikoViewController.kt

-package org.jetbrains.skiko
+package org.jetbrains.skiko.sample
 
 import kotlinx.cinterop.*
+import org.jetbrains.skiko.SkiaLayer
 import platform.Foundation.*
 import platform.UIKit.*
-import platform.CoreGraphics.CGPointMake
-import platform.CoreGraphics.CGRectMake
 import platform.Foundation.NSCoder
-import platform.Foundation.NSSelectorFromString
 
 @ExportObjCClass
 class SkikoViewController : UIViewController {
@@ -17,19 +15,6 @@ class SkikoViewController : UIViewController {
     @OverrideInit
     constructor(coder: NSCoder) : super(coder)
 
-    @ObjCOutlet
-    lateinit var label: UILabel
-
-    @ObjCOutlet
-    lateinit var button: UIButton
-
-    var pressed = 0
-
-    @ObjCAction
-    fun buttonPressed() {
-        label.text = "Hello #${pressed++} from Skiko!"
-        println("Button pressed")
-    }
 
     override fun viewDidLoad() {
         super.viewDidLoad()
@@ -38,7 +23,11 @@ class SkikoViewController : UIViewController {
             this.size.width to this.size.height
         }
 
-        val header = UIView().apply {
+        val layer = SkiaLayer(width.toInt(), height.toInt())
+
+        layer.initLayer()
+
+        layer.view = UIView().apply {
             backgroundColor = UIColor.lightGrayColor
             view.addSubview(this)
             translatesAutoresizingMaskIntoConstraints = false
@@ -47,27 +36,5 @@ class SkikoViewController : UIViewController {
             widthAnchor.constraintEqualToAnchor(view.widthAnchor).active = true
             heightAnchor.constraintEqualToAnchor(view.heightAnchor).active = true
         }
-
-        label = UILabel().apply {
-            setFrame(CGRectMake(x = 10.0, y = 10.0, width = width - 100.0, height = 40.0))
-            center = CGPointMake(x = width / 2, y = 40.0 )
-            textAlignment = NSTextAlignmentCenter
-            text = "Press OK"
-            header.addSubview(this)
-        }
-
-        button = UIButton().apply {
-            setFrame(CGRectMake(x = 10.0, y = height - 100.0, width = width - 100.0, height = 40.0))
-            center = CGPointMake(x = width / 2, y = height / 2)
-            backgroundColor = UIColor.blueColor
-            setTitle("OK", forState = UIControlStateNormal)
-            font = UIFont.fontWithName(fontName = font.fontName, size = 28.0)!!
-            layer.borderWidth = 1.0
-            layer.borderColor = UIColor.colorWithRed(0x47 / 255.0, 0x43 / 255.0, 0x70 / 255.0, 1.0).CGColor
-            layer.masksToBounds = true
-            addTarget(target = this@SkikoViewController, action = NSSelectorFromString("buttonPressed"),
-                forControlEvents = UIControlEventTouchUpInside)
-            header.addSubview(this)
-        }
     }
 }

samples/SkiaNativeSample/src/macosMain/kotlin/org/jetbrains/skiko/sample/App.macos.kt

@@ -5,42 +5,18 @@ import platform.AppKit.*
 import org.jetbrains.skia.*
 import org.jetbrains.skiko.*
 import kotlinx.cinterop.*
-import kotlin.math.cos
-import kotlin.math.sin
 
 fun main() {
-    // TODO: Remove me! This is to run all cleaners before main() exits.
-    kotlin.native.internal.Debugging.forceCheckedShutdown = true
-
     NSApplication.sharedApplication()
-    createWindow("Skia/Native macos sample")
+    createWindow()
     NSApp?.run()
 }
 
-fun createWindow(title: String)  {
-    val window = SkiaWindow()
-
-    var angle = 0.0f
-
-    window.layer.renderer = Renderer(window.layer) {
-        renderer, w, h, nanoTime -> displayScene(renderer.canvas!!, nanoTime)
+fun createWindow()  {
+    val layer = SkiaLayer()
+    layer.renderer = GenericRenderer(layer) {
+            canvas, w, h, nanoTime -> displayScene(canvas, nanoTime)
     }
-
+    val window = SkiaWindow(layer)
     window.nsWindow.orderFrontRegardless()
 }
-
-class Renderer(
-    val layer: SkiaLayer,
-    val displayScene: (Renderer, Int, Int, Long) -> Unit
-): SkiaRenderer {
-    var canvas: Canvas? = null
-
-    override fun onRender(canvas: Canvas, width: Int, height: Int, nanoTime: Long) {
-        this.canvas = canvas
-        val contentScale = layer.contentScale
-        canvas.scale(contentScale, contentScale)
-        displayScene(this, (width / contentScale).toInt(), (height / contentScale).toInt(), nanoTime)
-        layer.needRedraw()
-    }
-}
-

skiko/build.gradle.kts

@@ -5,7 +5,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinNativeCompile
 import org.jetbrains.kotlin.utils.keysToMap
 
 plugins {
-    kotlin("multiplatform") version "1.5.31"
+    kotlin("multiplatform") version "1.5.31" // "1.6.0-M1"
     `maven-publish`
     id("org.gradle.crypto.checksum") version "1.1.0"
     id("de.undercouch.download") version "4.1.1"

skiko/src/commonMain/kotlin/org/jetbrains/skiko/SkiaLayer.kt

@@ -3,15 +3,29 @@ package org.jetbrains.skiko
 import org.jetbrains.skia.Canvas
 import org.jetbrains.skia.Picture
 
-interface SkiaRenderer {
-    fun onRender(canvas: Canvas, width: Int, height: Int, nanoTime: Long)
-}
-
-expect open class SkiaLayer {
+expect open class SkiaLayer(properties: SkiaLayerProperties = makeDefaultSkiaLayerProperties()) {
     var renderApi: GraphicsApi
     val contentScale: Float
     var fullscreen: Boolean
     var transparency: Boolean
+
+    fun needRedraw()
+}
+
+interface SkiaRenderer {
+    fun onRender(canvas: Canvas, width: Int, height: Int, nanoTime: Long)
+}
+
+open class GenericRenderer(
+    val layer: SkiaLayer,
+    val displayScene: (Canvas, Int, Int, Long) -> Unit
+): SkiaRenderer {
+    override fun onRender(canvas: Canvas, width: Int, height: Int, nanoTime: Long) {
+        val contentScale = layer.contentScale
+        canvas.scale(contentScale, contentScale)
+        displayScene(canvas, (width / contentScale).toInt(), (height / contentScale).toInt(), nanoTime)
+        layer.needRedraw()
+    }
 }
 
 internal class PictureHolder(val instance: Picture, val width: Int, val height: Int)

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

 package org.jetbrains.skiko
 
 import kotlinx.cinterop.*
+import org.jetbrains.skia.PictureRecorder
+import org.jetbrains.skia.Rect
+import org.jetbrains.skiko.redrawer.Redrawer
 import platform.Foundation.*
 import platform.UIKit.*
 
-actual open class SkiaLayer {
-    actual var renderApi: GraphicsApi = GraphicsApi.OPENGL
+actual open class SkiaLayer actual constructor(
+    properties: SkiaLayerProperties
+) {
+    var width: Int = 0
+    var height: Int = 0
+
+    constructor(width: Int, height: Int) : this(
+        makeDefaultSkiaLayerProperties()) {
+        this.width = width
+        this.height = height
+    }
+
+    actual var renderApi: GraphicsApi
+        get() = GraphicsApi.METAL
+        set(value) { throw UnsupportedOperationException() }
 
     actual val contentScale: Float
         get() = 1.0f
+
     actual var fullscreen: Boolean
-        get() = TODO("Not yet implemented")
-        set(value) {}
+        get() = true
+        set(value) { throw UnsupportedOperationException() }
+
     actual var transparency: Boolean
-        get() = TODO("Not yet implemented")
-        set(value) {}
+        get() = false
+        set(value) { throw UnsupportedOperationException() }
+
+    actual fun needRedraw() {
+        redrawer?.needRedraw()
+    }
+
+    lateinit var view: UIView
+
+    fun initLayer() {
+        println("SkiaLayer.initLayer")
+        //redrawer = createNativeRedrawer(this, renderApi, properties)
+        redrawer?.redrawImmediately()
+    }
+
+    var renderer: SkiaRenderer? = null
+    private var redrawer: Redrawer? = null
+    private var picture: PictureHolder? = null
+    private val pictureRecorder = PictureRecorder()
+
+    fun update(nanoTime: Long) {
+        println("SkiaLayer.update")
+
+        val width = 800f
+        val height = 600f
+
+        val pictureWidth = (width * contentScale).coerceAtLeast(0.0F)
+        val pictureHeight = (height * contentScale).coerceAtLeast(0.0F)
+
+        val bounds = Rect.makeWH(pictureWidth, pictureHeight)
+        val canvas = pictureRecorder.beginRecording(bounds)
+        renderer?.onRender(canvas, pictureWidth.toInt(), pictureHeight.toInt(), nanoTime)
+
+        val picture = pictureRecorder.finishRecordingAsPicture()
+        this.picture = PictureHolder(picture, pictureWidth.toInt(), pictureHeight.toInt())
+    }
 }

skiko/src/iosMain/kotlin/org/jetbrains/skiko/redrawer/MetalRedrawer.ios.kt

+package org.jetbrains.skiko.redrawer
+
+import org.jetbrains.skiko.SkiaLayer
+import org.jetbrains.skiko.SkiaLayerProperties
+
+internal class MetalRedrawer(
+    private val layer: SkiaLayer,
+    private val properties: SkiaLayerProperties
+) : Redrawer {
+    override fun dispose() {
+        TODO()
+    }
+
+    override fun syncSize() {
+        TODO()
+    }
+
+    override fun needRedraw() {
+        TODO()
+    }
+
+    override fun redrawImmediately() {
+        TODO()
+    }
+}

skiko/src/iosMain/kotlin/org/jetbrains/skiko/redrawer/OpenGLRedrawer.ios.kt

@@ -2,24 +2,25 @@ package org.jetbrains.skiko.redrawer
 
 import org.jetbrains.skiko.SkiaLayer
 import org.jetbrains.skiko.SkiaLayerProperties
+import kotlin.system.getTimeNanos
 
 internal class OpenGLRedrawer(
     private val layer: SkiaLayer,
     private val properties: SkiaLayerProperties
 ) : Redrawer {
     override fun dispose() {
-        TODO()
+        println("dispose")
     }
 
     override fun syncSize() {
-        TODO()
+        println("syncSize")
     }
 
     override fun needRedraw() {
-        TODO()
+        println("needRedraw")
     }
 
     override fun redrawImmediately() {
-        TODO()
+        layer.update(getTimeNanos())
     }
 }

skiko/src/jsMain/kotlin/org/jetbrains/skiko/SkiaLayer.js.kt

 package org.jetbrains.skiko
 
-actual open class SkiaLayer {
+actual open class SkiaLayer actual constructor(
+    properties: SkiaLayerProperties
+) {
     actual var renderApi: GraphicsApi = GraphicsApi.WEBGL
     actual val contentScale: Float
         get() = 1.0f
@@ -10,4 +12,7 @@ actual open class SkiaLayer {
     actual var transparency: Boolean
         get() = false
         set(value) = throw Exception("Transparency is not supported!")
+    actual fun needRedraw() {
+        TODO("unimplemented")
+    }
 }

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/SkiaLayer.jvm.kt

@@ -28,6 +28,7 @@ actual open class SkiaLayer internal constructor(
     private val properties: SkiaLayerProperties = makeDefaultSkiaLayerProperties(),
     private val renderFactory: RenderFactory
 ) : JPanel() {
+
     companion object {
         init {
             Library.load()
@@ -43,6 +44,11 @@ actual open class SkiaLayer internal constructor(
 
     internal val backedLayer: HardwareLayer
 
+    actual constructor(
+        properties: SkiaLayerProperties
+    ) : this(null, properties, RenderFactory.Default)
+
+
     constructor(
         properties: SkiaLayerProperties = makeDefaultSkiaLayerProperties(),
         externalAccessibleFactory: ((Component) -> Accessible)? = null
@@ -311,7 +317,7 @@ actual open class SkiaLayer internal constructor(
     /**
      * Redraw on the next animation Frame (on vsync signal if vsync is enabled).
      */
-    fun needRedraw() {
+    actual fun needRedraw() {
         check(isEventDispatchThread()) { "Method should be called from AWT event dispatch thread" }
         check(!isDisposed) { "SkiaLayer is disposed" }
         redrawer?.needRedraw()

skiko/src/linuxMain/kotlin/org/jetbrains/skiko/SkiaLayer.linux.kt

 package org.jetbrains.skiko
 
-actual open class SkiaLayer {
+actual open class SkiaLayer actual constructor(
+    properties: SkiaLayerProperties
+)  {
     actual var renderApi: GraphicsApi
         get() = TODO("Not yet implemented")
         set(value) {}
@@ -12,4 +14,7 @@ actual open class SkiaLayer {
     actual var transparency: Boolean
         get() = TODO("Not yet implemented")
         set(value) {}
+    actual fun needRedraw() {
+        TODO("unimplemented")
+    }
 }
\ No newline at end of file

skiko/src/macosMain/kotlin/org/jetbrains/skiko/SkiaLayer.macos.kt

@@ -7,8 +7,8 @@ import org.jetbrains.skiko.redrawer.Redrawer
 import platform.AppKit.NSView
 import platform.Foundation.NSMakeRect
 
-actual open class SkiaLayer(
-    private val properties: SkiaLayerProperties = makeDefaultSkiaLayerProperties()
+actual open class SkiaLayer actual constructor(
+    private val properties: SkiaLayerProperties
 ) {
     actual var renderApi: GraphicsApi = GraphicsApi.OPENGL
     actual val contentScale: Float
@@ -50,7 +50,7 @@ actual open class SkiaLayer(
         initedCanvas = false
     }
 
-    fun needRedraw() {
+    actual fun needRedraw() {
         redrawer?.needRedraw()
     }
 

skiko/src/macosMain/kotlin/org/jetbrains/skiko/SkiaWindow.macos.kt

@@ -3,9 +3,7 @@ package org.jetbrains.skiko
 import platform.AppKit.*
 import platform.Foundation.*
 
-open class SkiaWindow(
-    properties: SkiaLayerProperties = makeDefaultSkiaLayerProperties()
-) {
+class SkiaWindow(layer: SkiaLayer) {
     private val windowStyle =
         NSWindowStyleMaskTitled or
         NSWindowStyleMaskMiniaturizable or
@@ -22,8 +20,6 @@ open class SkiaWindow(
         backing =  NSBackingStoreBuffered,
         defer = true)
 
-    val layer = SkiaLayer(properties)
-
     init {
         nsWindow.contentView!!.addSubview(layer.nsView)
         layer.initLayer()