Support KMP for landscapist-animation module

landscapist-animation/api/android/landscapist-animation.api

@@ -0,0 +1,34 @@
+public abstract interface class com/skydoves/landscapist/animation/circular/CircularRevealFinishListener {
+	public abstract fun onFinish ()V
+}
+
+public final class com/skydoves/landscapist/animation/circular/CircularRevealImageKt {
+	public static final field DefaultCircularRevealDuration I
+	public static final fun CircularRevealImage (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/Modifier;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/Alignment;Landroidx/compose/ui/layout/ContentScale;Ljava/lang/String;FLandroidx/compose/ui/graphics/ColorFilter;Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;Landroidx/compose/runtime/Composer;II)V
+}
+
+public final class com/skydoves/landscapist/animation/circular/CircularRevealPlugin : com/skydoves/landscapist/plugins/ImagePlugin$PainterPlugin {
+	public static final field $stable I
+	public fun <init> ()V
+	public fun <init> (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;)V
+	public synthetic fun <init> (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()I
+	public final fun component2 ()Lcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;
+	public fun compose (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/runtime/Composer;I)Landroidx/compose/ui/graphics/painter/Painter;
+	public final fun copy (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;)Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;
+	public static synthetic fun copy$default (Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;ILjava/lang/Object;)Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getDuration ()I
+	public final fun getOnFinishListener ()Lcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/skydoves/landscapist/animation/crossfade/CrossfadePlugin : com/skydoves/landscapist/plugins/ImagePlugin$PainterPlugin {
+	public static final field $stable I
+	public fun <init> ()V
+	public fun <init> (I)V
+	public synthetic fun <init> (IILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun compose (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/runtime/Composer;I)Landroidx/compose/ui/graphics/painter/Painter;
+}
+

landscapist-animation/api/desktop/landscapist-animation.api

@@ -0,0 +1,34 @@
+public abstract interface class com/skydoves/landscapist/animation/circular/CircularRevealFinishListener {
+	public abstract fun onFinish ()V
+}
+
+public final class com/skydoves/landscapist/animation/circular/CircularRevealImageKt {
+	public static final field DefaultCircularRevealDuration I
+	public static final fun CircularRevealImage (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/Modifier;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/Alignment;Landroidx/compose/ui/layout/ContentScale;Ljava/lang/String;FLandroidx/compose/ui/graphics/ColorFilter;Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;Landroidx/compose/runtime/Composer;II)V
+}
+
+public final class com/skydoves/landscapist/animation/circular/CircularRevealPlugin : com/skydoves/landscapist/plugins/ImagePlugin$PainterPlugin {
+	public static final field $stable I
+	public fun <init> ()V
+	public fun <init> (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;)V
+	public synthetic fun <init> (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()I
+	public final fun component2 ()Lcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;
+	public fun compose (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/runtime/Composer;I)Landroidx/compose/ui/graphics/painter/Painter;
+	public final fun copy (ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;)Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;
+	public static synthetic fun copy$default (Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;ILcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;ILjava/lang/Object;)Lcom/skydoves/landscapist/animation/circular/CircularRevealPlugin;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getDuration ()I
+	public final fun getOnFinishListener ()Lcom/skydoves/landscapist/animation/circular/CircularRevealFinishListener;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/skydoves/landscapist/animation/crossfade/CrossfadePlugin : com/skydoves/landscapist/plugins/ImagePlugin$PainterPlugin {
+	public static final field $stable I
+	public fun <init> ()V
+	public fun <init> (I)V
+	public synthetic fun <init> (IILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun compose (Landroidx/compose/ui/graphics/ImageBitmap;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/runtime/Composer;I)Landroidx/compose/ui/graphics/painter/Painter;
+}
+

landscapist-animation/build.gradle.kts

@@ -16,7 +16,7 @@
 import com.github.skydoves.landscapist.Configuration
 
 plugins {
-  id("landscapist.library.compose")
+  id("landscapist.library.compose.multiplatform")
   id("landscapist.spotless")
 }
 
@@ -35,6 +35,31 @@ mavenPublishing {
   }
 }
 
+kotlin {
+  sourceSets {
+    all {
+      languageSettings.optIn("kotlin.RequiresOptIn")
+      languageSettings.optIn("kotlinx.coroutines.ExperimentalCoroutinesApi")
+      languageSettings.optIn("com.skydoves.landscapist.InternalLandscapistApi")
+    }
+    val commonMain by getting {
+      dependencies {
+        api(project(":landscapist"))
+
+        implementation(compose.ui)
+        implementation(compose.runtime)
+        implementation(compose.foundation)
+      }
+    }
+
+    val androidMain by getting {
+      dependencies {
+        implementation(libs.androidx.core.ktx)
+      }
+    }
+  }
+}
+
 android {
   namespace = "com.skydoves.landscapist.animation"
   compileSdk = Configuration.compileSdk
@@ -52,17 +77,14 @@ baselineProfile {
   }
 }
 
-dependencies {
-  api(project(":landscapist"))
-
-  implementation(libs.androidx.core.ktx)
-  implementation(libs.androidx.compose.ui)
-  implementation(libs.androidx.compose.runtime)
-  implementation(libs.androidx.compose.foundation)
-
-  androidTestImplementation(libs.androidx.test.rules)
-  androidTestImplementation(libs.androidx.test.runner)
-  androidTestImplementation(libs.androidx.test.junit)
-  androidTestImplementation(libs.androidx.compose.ui)
-  androidTestImplementation(libs.androidx.compose.ui.test)
-}
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
+  kotlinOptions {
+    jvmTarget = "1.8"
+    freeCompilerArgs += listOf(
+      "-Xexplicit-api=strict",
+      "-opt-in=kotlin.RequiresOptIn",
+      "-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi",
+      "-opt-in=com.skydoves.landscapist.InternalLandscapistApi",
+    )
+  }
+}

landscapist-animation/src/main/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealPainter.kt → landscapist-animation/src/androidMain/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealPainter.kt

@@ -29,7 +29,6 @@ import androidx.compose.ui.graphics.ImageShader
 import androidx.compose.ui.graphics.Paint
 import androidx.compose.ui.graphics.ShaderBrush
 import androidx.compose.ui.graphics.TileMode
-import androidx.compose.ui.graphics.asAndroidBitmap
 import androidx.compose.ui.graphics.drawscope.DrawScope
 import androidx.compose.ui.graphics.drawscope.drawIntoCanvas
 import androidx.compose.ui.graphics.painter.Painter
@@ -42,12 +41,12 @@ import androidx.core.util.Pools
  * @param imageBitmap an image bitmap for loading for the content.
  * @param painter an image painter to draw an [ImageBitmap] into the provided canvas.
  */
-internal class CircularRevealPainter(
-  private val imageBitmap: ImageBitmap,
-  private val painter: Painter,
+internal actual class CircularRevealPainter actual constructor(
+  actual val imageBitmap: ImageBitmap,
+  actual val painter: Painter,
 ) : Painter() {
 
-  var radius by mutableStateOf(0f, policy = neverEqualPolicy())
+  actual var radius by mutableStateOf(0f, policy = neverEqualPolicy())
 
   override fun DrawScope.onDraw() {
     var dx = 0f
@@ -68,8 +67,8 @@ internal class CircularRevealPainter(
       canvas.saveLayer(size.toRect(), paint)
 
       val mDrawableRect = RectF(0f, 0f, size.width, size.height)
-      val bitmapWidth: Int = imageBitmap.asAndroidBitmap().width
-      val bitmapHeight: Int = imageBitmap.asAndroidBitmap().height
+      val bitmapWidth: Int = imageBitmap.width
+      val bitmapHeight: Int = imageBitmap.height
 
       if (bitmapWidth * mDrawableRect.height() > mDrawableRect.width() * bitmapHeight) {
         scale = mDrawableRect.height() / bitmapHeight.toFloat()

landscapist-animation/src/main/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadePainter.kt → landscapist-animation/src/androidMain/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadePainter.kt

@@ -40,16 +40,16 @@ import androidx.core.util.Pools
  * @param imageBitmap an image bitmap for loading for the content.
  * @param painter an image painter to draw an [ImageBitmap] into the provided canvas.
  */
-internal class CrossfadePainter(
-  private val imageBitmap: ImageBitmap,
-  private val painter: Painter,
+internal actual class CrossfadePainter actual constructor(
+  actual val imageBitmap: ImageBitmap,
+  actual val painter: Painter,
 ) : Painter() {
 
   /** return the dimension size of the [painter]'s intrinsic width and height. */
   override val intrinsicSize: Size get() = painter.intrinsicSize
 
   /** color filter that will be applied to draw the [imageBitmap]. */
-  var transitionColorFilter by mutableStateOf<ColorFilter?>(null)
+  actual var transitionColorFilter by mutableStateOf<ColorFilter?>(null)
 
   override fun DrawScope.onDraw() {
     drawIntoCanvas { canvas ->

landscapist-animation/src/main/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealImage.kt → landscapist-animation/src/commonMain/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealImage.kt

@@ -13,9 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-@file:JvmName("CircularRevealImage")
-@file:JvmMultifileClass
-
 package com.skydoves.landscapist.animation.circular
 
 import androidx.compose.foundation.Image

landscapist-animation/src/commonMain/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealPainter.kt

@@ -0,0 +1,35 @@
+/*
+ * Designed and developed by 2020-2023 skydoves (Jaewoong Eum)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.skydoves.landscapist.animation.circular
+
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.painter.Painter
+
+/**
+ * CircularRevealPainter is a [Painter] which animates a clipping circle to reveal an image.
+ * Reveal animations provide users visual continuity when we show an image.
+ *
+ * @param imageBitmap an image bitmap for loading for the content.
+ * @param painter an image painter to draw an [ImageBitmap] into the provided canvas.
+ */
+internal expect class CircularRevealPainter(
+  imageBitmap: ImageBitmap,
+  painter: Painter,
+) : Painter {
+  internal val imageBitmap: ImageBitmap
+  internal val painter: Painter
+  internal var radius: Float
+}

landscapist-animation/src/commonMain/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadePainter.kt

@@ -0,0 +1,35 @@
+/*
+ * Designed and developed by 2020-2023 skydoves (Jaewoong Eum)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.skydoves.landscapist.animation.crossfade
+
+import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.painter.Painter
+
+/**
+ * CrossfadePainter is a [Painter] that applies crossfade filter effect on the given [imageBitmap].
+ *
+ * @param imageBitmap an image bitmap for loading for the content.
+ * @param painter an image painter to draw an [ImageBitmap] into the provided canvas.
+ */
+internal expect class CrossfadePainter(
+  imageBitmap: ImageBitmap,
+  painter: Painter,
+) : Painter {
+  internal val imageBitmap: ImageBitmap
+  internal val painter: Painter
+  internal var transitionColorFilter: ColorFilter?
+}

landscapist-animation/src/skiaMain/kotlin/com/skydoves/landscapist/animation/circular/CircularRevealPainter.kt

@@ -0,0 +1,100 @@
+/*
+ * Designed and developed by 2020-2023 skydoves (Jaewoong Eum)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.skydoves.landscapist.animation.circular
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.neverEqualPolicy
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Rect
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.geometry.toRect
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.Paint
+import androidx.compose.ui.graphics.ShaderBrush
+import androidx.compose.ui.graphics.asSkiaBitmap
+import androidx.compose.ui.graphics.drawscope.DrawScope
+import androidx.compose.ui.graphics.drawscope.drawIntoCanvas
+import androidx.compose.ui.graphics.painter.Painter
+import org.jetbrains.skia.Image
+import org.jetbrains.skia.Matrix33
+
+/**
+ * CircularRevealPainter is a [Painter] which animates a clipping circle to reveal an image.
+ * Reveal animations provide users visual continuity when we show an image.
+ *
+ * @param imageBitmap an image bitmap for loading for the content.
+ * @param painter an image painter to draw an [ImageBitmap] into the provided canvas.
+ */
+internal actual class CircularRevealPainter actual constructor(
+  actual val imageBitmap: ImageBitmap,
+  actual val painter: Painter,
+) : Painter() {
+
+  actual var radius by mutableStateOf(0f, policy = neverEqualPolicy())
+
+  override fun DrawScope.onDraw() {
+    var dx = 0f
+    var dy = 0f
+    var scale: Float
+    val paint = Paint()
+
+    paint.asFrameworkPaint().apply {
+      isAntiAlias = true
+      isDither = true
+    }
+
+    drawIntoCanvas { canvas ->
+      // cache the paint in the internal stack.
+      canvas.saveLayer(size.toRect(), paint)
+
+      val mDrawableRect = Rect(offset = Offset.Zero, size = Size(size.width, size.height))
+      val bitmapWidth: Int = imageBitmap.width
+      val bitmapHeight: Int = imageBitmap.height
+
+      if (bitmapWidth * mDrawableRect.size.height > mDrawableRect.size.width * bitmapHeight) {
+        scale = mDrawableRect.size.height / bitmapHeight.toFloat()
+        dx = (mDrawableRect.size.width - bitmapWidth * scale) * 0.5f
+      } else {
+        scale = mDrawableRect.size.width / bitmapWidth.toFloat()
+        dy = (mDrawableRect.size.height - bitmapHeight * scale) * 0.5f
+      }
+
+      // resize the matrix to scale by sx and sy.
+      val m1 = Matrix33.makeScale(scale, scale)
+      val m2 = Matrix33.makeTranslate(
+        (dx + 0.5f) + mDrawableRect.left,
+        (dy + 0.5f) + mDrawableRect.top,
+      )
+      val shaderMatrix = m1.makeConcat(m2)
+      val shader = Image.makeFromBitmap(imageBitmap.asSkiaBitmap()).makeShader(
+        localMatrix = shaderMatrix,
+      )
+      val brush = ShaderBrush(shader)
+      // calculate radius and draw an image bitmap as a circle.
+      val calculatedRadius = size.width.coerceAtLeast(size.height) * radius
+      drawCircle(brush, calculatedRadius, Offset(size.width / 2, size.height / 2))
+      // restore canvas.
+      canvas.restore()
+      // resets the paint and release to the pool.
+      paint.asFrameworkPaint().reset()
+    }
+  }
+
+  /** return the dimension size of the [painter]'s intrinsic width and height. */
+  override val intrinsicSize: Size get() = painter.intrinsicSize
+}