Add most important Interpolators as resource interpolators to AnimationLib

Bug: 292080029
Test: atest InterpolatorResourcesTest
Change-Id: I236a35126965156089c23eb6e3169e2c76a2ce03

9 files changed, 197 insertions, 0 deletions

diff --git a/animationlib/Android.bp b/animationlib/Android.bp
index d67a5de..5417001 100644
--- a/animationlib/Android.bp
+++ b/animationlib/Android.bp
@@ -31,6 +31,9 @@ android_library {
         "src/**/*.java",
         "src/**/*.kt"
     ],
+    resource_dirs: [
+        "res"
+    ],
     kotlincflags: ["-Xjvm-default=all"],
     // This library is meant to access only public APIs
     // do not flip this flag to true
diff --git a/animationlib/build.gradle b/animationlib/build.gradle
index 645484a..d32fdb4 100644
--- a/animationlib/build.gradle
+++ b/animationlib/build.gradle
@@ -11,6 +11,7 @@ android {
     sourceSets {
         main {
             java.srcDirs = ['src']
+            res.srcDirs = ['res']
             manifest.srcFile 'AndroidManifest.xml'
         }
         androidTest {
diff --git a/animationlib/res/interpolator/emphasized_accelerate_interpolator.xml b/animationlib/res/interpolator/emphasized_accelerate_interpolator.xml
new file mode 100644
index 0000000..b9e3783
--- /dev/null
+++ b/animationlib/res/interpolator/emphasized_accelerate_interpolator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:controlX1="0.3"
+    android:controlY1="0"
+    android:controlX2="0.8"
+    android:controlY2="0.15"/>
diff --git a/animationlib/res/interpolator/emphasized_decelerate_interpolator.xml b/animationlib/res/interpolator/emphasized_decelerate_interpolator.xml
new file mode 100644
index 0000000..990bcff
--- /dev/null
+++ b/animationlib/res/interpolator/emphasized_decelerate_interpolator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:controlX1="0.05"
+    android:controlY1="0.7"
+    android:controlX2="0.1"
+    android:controlY2="1"/>
diff --git a/animationlib/res/interpolator/emphasized_interpolator.xml b/animationlib/res/interpolator/emphasized_interpolator.xml
new file mode 100644
index 0000000..5a48611
--- /dev/null
+++ b/animationlib/res/interpolator/emphasized_interpolator.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:pathData="M 0,0 C 0.05, 0, 0.133333, 0.06, 0.166666, 0.4 C 0.208333, 0.82, 0.25, 1, 1, 1"/>
\ No newline at end of file
diff --git a/animationlib/res/interpolator/standard_accelerate_interpolator.xml b/animationlib/res/interpolator/standard_accelerate_interpolator.xml
new file mode 100644
index 0000000..351862f
--- /dev/null
+++ b/animationlib/res/interpolator/standard_accelerate_interpolator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:controlX1="0.3"
+    android:controlY1="0"
+    android:controlX2="1"
+    android:controlY2="1"/>
\ No newline at end of file
diff --git a/animationlib/res/interpolator/standard_decelerate_interpolator.xml b/animationlib/res/interpolator/standard_decelerate_interpolator.xml
new file mode 100644
index 0000000..1aee540
--- /dev/null
+++ b/animationlib/res/interpolator/standard_decelerate_interpolator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:controlX1="0"
+    android:controlY1="0"
+    android:controlX2="0"
+    android:controlY2="1"/>
\ No newline at end of file
diff --git a/animationlib/res/interpolator/standard_interpolator.xml b/animationlib/res/interpolator/standard_interpolator.xml
new file mode 100644
index 0000000..8cc2a65
--- /dev/null
+++ b/animationlib/res/interpolator/standard_interpolator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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
+  -->
+
+<pathInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:controlX1="0.2"
+    android:controlY1="0"
+    android:controlX2="0"
+    android:controlY2="1"/>
diff --git a/animationlib/tests/src/com/android/app/animation/InterpolatorResourcesTest.kt b/animationlib/tests/src/com/android/app/animation/InterpolatorResourcesTest.kt
new file mode 100644
index 0000000..ed4670e
--- /dev/null
+++ b/animationlib/tests/src/com/android/app/animation/InterpolatorResourcesTest.kt
@@ -0,0 +1,64 @@
+package com.android.app.animation
+
+import android.annotation.InterpolatorRes
+import android.content.Context
+import android.view.animation.AnimationUtils
+import androidx.test.filters.SmallTest
+import androidx.test.platform.app.InstrumentationRegistry
+import junit.framework.Assert.assertEquals
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+@SmallTest
+@RunWith(JUnit4::class)
+class InterpolatorResourcesTest {
+
+    private lateinit var context: Context
+
+    @Before
+    fun setup() {
+        context = InstrumentationRegistry.getInstrumentation().context
+    }
+
+    @Test
+    fun testResourceInterpolatorsMatchCodeInterpolators() {
+        var progress = 0f
+        while (progress < +1f) {
+            assertEquals(
+                InterpolatorsAndroidX.EMPHASIZED.getInterpolation(progress),
+                loadInterpolator(R.interpolator.emphasized_interpolator).getInterpolation(progress)
+            )
+            assertEquals(
+                InterpolatorsAndroidX.EMPHASIZED_ACCELERATE.getInterpolation(progress),
+                loadInterpolator(R.interpolator.emphasized_accelerate_interpolator)
+                    .getInterpolation(progress)
+            )
+            assertEquals(
+                InterpolatorsAndroidX.EMPHASIZED_DECELERATE.getInterpolation(progress),
+                loadInterpolator(R.interpolator.emphasized_decelerate_interpolator)
+                    .getInterpolation(progress)
+            )
+            assertEquals(
+                InterpolatorsAndroidX.STANDARD.getInterpolation(progress),
+                loadInterpolator(R.interpolator.standard_interpolator).getInterpolation(progress)
+            )
+            assertEquals(
+                InterpolatorsAndroidX.STANDARD_ACCELERATE.getInterpolation(progress),
+                loadInterpolator(R.interpolator.standard_accelerate_interpolator)
+                    .getInterpolation(progress)
+            )
+            assertEquals(
+                InterpolatorsAndroidX.STANDARD_DECELERATE.getInterpolation(progress),
+                loadInterpolator(R.interpolator.standard_decelerate_interpolator)
+                    .getInterpolation(progress)
+            )
+            progress += 0.1f
+        }
+    }
+
+    private fun loadInterpolator(@InterpolatorRes resourceInt: Int) =
+        AnimationUtils.loadInterpolator(context, resourceInt)
+
+}