Create iconloader library
Bug: 115891474
Test: Builds everything
Change-Id: I1d75702d4e5a10d694eeb839784a629de2f74dd2
diff --git a/iconloaderlib/Android.bp b/iconloaderlib/Android.bp
new file mode 100644
index 0000000..8a71f94
--- /dev/null
+++ b/iconloaderlib/Android.bp
@@ -0,0 +1,28 @@
+// Copyright (C) 2018 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.
+
+android_library {
+ name: "iconloader",
+ sdk_version: "28",
+ min_sdk_version: "21",
+ static_libs: [
+ "androidx.core_core",
+ ],
+ resource_dirs: [
+ "res",
+ ],
+ srcs: [
+ "src/**/*.java",
+ ],
+}
diff --git a/iconloaderlib/AndroidManifest.xml b/iconloaderlib/AndroidManifest.xml
new file mode 100644
index 0000000..b30258d
--- /dev/null
+++ b/iconloaderlib/AndroidManifest.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright (C) 2018 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.android.launcher3.icons">
+</manifest>
diff --git a/iconloaderlib/build.gradle b/iconloaderlib/build.gradle
new file mode 100644
index 0000000..d080293
--- /dev/null
+++ b/iconloaderlib/build.gradle
@@ -0,0 +1,50 @@
+buildscript {
+ repositories {
+ mavenCentral()
+ google()
+ }
+ dependencies {
+ classpath GRADLE_CLASS_PATH
+ }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+ compileSdkVersion COMPILE_SDK.toInteger()
+ buildToolsVersion BUILD_TOOLS_VERSION
+ publishNonDefault true
+
+ defaultConfig {
+ minSdkVersion 21
+ targetSdkVersion 28
+ versionCode 1
+ versionName "1.0"
+ }
+
+ sourceSets {
+ main {
+ java.srcDirs = ['src']
+ manifest.srcFile 'AndroidManifest.xml'
+ res.srcDirs = ['res']
+ }
+ }
+
+ lintOptions {
+ abortOnError false
+ }
+
+ tasks.withType(JavaCompile) {
+ options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
+ }
+}
+
+
+repositories {
+ mavenCentral()
+ google()
+}
+
+dependencies {
+ implementation "androidx.core:core:${ANDROID_X_VERSION}"
+}
diff --git a/iconloaderlib/res/drawable-v26/adaptive_icon_drawable_wrapper.xml b/iconloaderlib/res/drawable-v26/adaptive_icon_drawable_wrapper.xml
new file mode 100644
index 0000000..9f13cf5
--- /dev/null
+++ b/iconloaderlib/res/drawable-v26/adaptive_icon_drawable_wrapper.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright (C) 2017 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.
+-->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+ <background android:drawable="@color/legacy_icon_background"/>
+ <foreground>
+ <com.android.launcher3.icons.FixedScaleDrawable />
+ </foreground>
+</adaptive-icon>
diff --git a/iconloaderlib/res/drawable/ic_instant_app_badge.xml b/iconloaderlib/res/drawable/ic_instant_app_badge.xml
new file mode 100644
index 0000000..b74317e
--- /dev/null
+++ b/iconloaderlib/res/drawable/ic_instant_app_badge.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ android:width="@dimen/profile_badge_size"
+ android:height="@dimen/profile_badge_size"
+ android:viewportWidth="18"
+ android:viewportHeight="18">
+
+ <path
+ android:fillColor="@android:color/black"
+ android:strokeWidth="1"
+ android:pathData="M 9 0 C 13.9705627485 0 18 4.02943725152 18 9 C 18 13.9705627485 13.9705627485 18 9 18 C 4.02943725152 18 0 13.9705627485 0 9 C 0 4.02943725152 4.02943725152 0 9 0 Z" />
+ <path
+ android:fillColor="@android:color/white"
+ android:strokeWidth="1"
+ android:pathData="M 9 0 C 13.9705627485 0 18 4.02943725152 18 9 C 18 13.9705627485 13.9705627485 18 9 18 C 4.02943725152 18 0 13.9705627485 0 9 C 0 4.02943725152 4.02943725152 0 9 0 Z" />
+ <path
+ android:fillColor="@android:color/white"
+ android:strokeWidth="1"
+ android:pathData="M 9 0 C 13.9705627485 0 18 4.02943725152 18 9 C 18 13.9705627485 13.9705627485 18 9 18 C 4.02943725152 18 0 13.9705627485 0 9 C 0 4.02943725152 4.02943725152 0 9 0 Z" />
+ <path
+ android:fillColor="@android:color/black"
+ android:fillAlpha="0.87"
+ android:strokeWidth="1"
+ android:pathData="M 6 10.4123279 L 8.63934949 10.4123279 L 8.63934949 15.6 L 12.5577168 7.84517705 L 9.94547194 7.84517705 L 9.94547194 2 Z" />
+</vector>
diff --git a/iconloaderlib/res/values/colors.xml b/iconloaderlib/res/values/colors.xml
new file mode 100644
index 0000000..873b2fc
--- /dev/null
+++ b/iconloaderlib/res/values/colors.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+**
+** Copyright 2018, 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.
+*/
+-->
+<resources>
+ <color name="legacy_icon_background">#FFFFFF</color>
+</resources>
diff --git a/iconloaderlib/res/values/dimens.xml b/iconloaderlib/res/values/dimens.xml
new file mode 100644
index 0000000..e8c0c44
--- /dev/null
+++ b/iconloaderlib/res/values/dimens.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 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.
+-->
+
+<resources>
+ <dimen name="profile_badge_size">24dp</dimen>
+</resources>
diff --git a/iconloaderlib/src/com/android.launcher3/icons/BaseIconFactory.java b/iconloaderlib/src/com/android.launcher3/icons/BaseIconFactory.java
new file mode 100644
index 0000000..681c03c
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/BaseIconFactory.java
@@ -0,0 +1,303 @@
+package com.android.launcher3.icons;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.AdaptiveIconDrawable;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Process;
+import android.os.UserHandle;
+
+import com.android.launcher3.icons.R;
+
+import static android.graphics.Paint.DITHER_FLAG;
+import static android.graphics.Paint.FILTER_BITMAP_FLAG;
+import static com.android.launcher3.icons.ShadowGenerator.BLUR_FACTOR;
+
+/**
+ * This class will be moved to androidx library. There shouldn't be any dependency outside
+ * this package.
+ */
+public class BaseIconFactory {
+
+ private static final int DEFAULT_WRAPPER_BACKGROUND = Color.WHITE;
+ public static final boolean ATLEAST_OREO = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
+
+ private final Rect mOldBounds = new Rect();
+ private final Context mContext;
+ private final Canvas mCanvas;
+ private final PackageManager mPm;
+ private final ColorExtractor mColorExtractor;
+ private boolean mDisableColorExtractor;
+
+ private int mFillResIconDpi;
+ private int mIconBitmapSize;
+
+ private IconNormalizer mNormalizer;
+ private ShadowGenerator mShadowGenerator;
+
+ private Drawable mWrapperIcon;
+ private int mWrapperBackgroundColor;
+
+ protected BaseIconFactory(Context context, int fillResIconDpi, int iconBitmapSize) {
+ mContext = context.getApplicationContext();
+
+ mFillResIconDpi = fillResIconDpi;
+ mIconBitmapSize = iconBitmapSize;
+
+ mPm = mContext.getPackageManager();
+ mColorExtractor = new ColorExtractor();
+
+ mCanvas = new Canvas();
+ mCanvas.setDrawFilter(new PaintFlagsDrawFilter(DITHER_FLAG, FILTER_BITMAP_FLAG));
+ }
+
+ protected void clear() {
+ mWrapperBackgroundColor = DEFAULT_WRAPPER_BACKGROUND;
+ mDisableColorExtractor = false;
+ }
+
+ public ShadowGenerator getShadowGenerator() {
+ if (mShadowGenerator == null) {
+ mShadowGenerator = new ShadowGenerator(mIconBitmapSize);
+ }
+ return mShadowGenerator;
+ }
+
+ public IconNormalizer getNormalizer() {
+ if (mNormalizer == null) {
+ mNormalizer = new IconNormalizer(mContext, mIconBitmapSize);
+ }
+ return mNormalizer;
+ }
+
+ public BitmapInfo createIconBitmap(Intent.ShortcutIconResource iconRes) {
+ try {
+ Resources resources = mPm.getResourcesForApplication(iconRes.packageName);
+ if (resources != null) {
+ final int id = resources.getIdentifier(iconRes.resourceName, null, null);
+ // do not stamp old legacy shortcuts as the app may have already forgotten about it
+ return createBadgedIconBitmap(
+ resources.getDrawableForDensity(id, mFillResIconDpi),
+ Process.myUserHandle() /* only available on primary user */,
+ false /* do not apply legacy treatment */);
+ }
+ } catch (Exception e) {
+ // Icon not found.
+ }
+ return null;
+ }
+
+ public BitmapInfo createIconBitmap(Bitmap icon) {
+ if (mIconBitmapSize == icon.getWidth() && mIconBitmapSize == icon.getHeight()) {
+ return BitmapInfo.fromBitmap(icon);
+ }
+ return BitmapInfo.fromBitmap(
+ createIconBitmap(new BitmapDrawable(mContext.getResources(), icon), 1f));
+ }
+
+ public BitmapInfo createBadgedIconBitmap(Drawable icon, UserHandle user,
+ boolean shrinkNonAdaptiveIcons) {
+ return createBadgedIconBitmap(icon, user, shrinkNonAdaptiveIcons, false, null);
+ }
+
+ public BitmapInfo createBadgedIconBitmap(Drawable icon, UserHandle user,
+ boolean shrinkNonAdaptiveIcons, boolean isInstantApp) {
+ return createBadgedIconBitmap(icon, user, shrinkNonAdaptiveIcons, isInstantApp, null);
+ }
+
+ /**
+ * Creates bitmap using the source drawable and various parameters.
+ * The bitmap is visually normalized with other icons and has enough spacing to add shadow.
+ *
+ * @param icon source of the icon
+ * @param user info can be used for a badge
+ * @param shrinkNonAdaptiveIcons {@code true} if non adaptive icons should be treated
+ * @param isInstantApp info can be used for a badge
+ * @param scale returns the scale result from normalization
+ * @return a bitmap suitable for disaplaying as an icon at various system UIs.
+ */
+ public BitmapInfo createBadgedIconBitmap(Drawable icon, UserHandle user,
+ boolean shrinkNonAdaptiveIcons, boolean isInstantApp, float[] scale) {
+ if (scale == null) {
+ scale = new float[1];
+ }
+ icon = normalizeAndWrapToAdaptiveIcon(icon, shrinkNonAdaptiveIcons, null, scale);
+ Bitmap bitmap = createIconBitmap(icon, scale[0]);
+ if (ATLEAST_OREO && icon instanceof AdaptiveIconDrawable) {
+ mCanvas.setBitmap(bitmap);
+ getShadowGenerator().recreateIcon(Bitmap.createBitmap(bitmap), mCanvas);
+ mCanvas.setBitmap(null);
+ }
+
+ final Bitmap result;
+ if (user != null && !Process.myUserHandle().equals(user)) {
+ BitmapDrawable drawable = new FixedSizeBitmapDrawable(bitmap);
+ Drawable badged = mPm.getUserBadgedIcon(drawable, user);
+ if (badged instanceof BitmapDrawable) {
+ result = ((BitmapDrawable) badged).getBitmap();
+ } else {
+ result = createIconBitmap(badged, 1f);
+ }
+ } else if (isInstantApp) {
+ badgeWithDrawable(bitmap, mContext.getDrawable(R.drawable.ic_instant_app_badge));
+ result = bitmap;
+ } else {
+ result = bitmap;
+ }
+ return BitmapInfo.fromBitmap(result, mDisableColorExtractor ? null : mColorExtractor);
+ }
+
+ public Bitmap createScaledBitmapWithoutShadow(Drawable icon, boolean shrinkNonAdaptiveIcons) {
+ RectF iconBounds = new RectF();
+ float[] scale = new float[1];
+ icon = normalizeAndWrapToAdaptiveIcon(icon, shrinkNonAdaptiveIcons, iconBounds, scale);
+ return createIconBitmap(icon,
+ Math.min(scale[0], ShadowGenerator.getScaleForBounds(iconBounds)));
+ }
+
+ /**
+ * Sets the background color used for wrapped adaptive icon
+ */
+ public void setWrapperBackgroundColor(int color) {
+ mWrapperBackgroundColor = (Color.alpha(color) < 255) ? DEFAULT_WRAPPER_BACKGROUND : color;
+ }
+
+ /**
+ * Disables the dominant color extraction for all icons loaded.
+ */
+ public void disableColorExtraction() {
+ mDisableColorExtractor = true;
+ }
+
+ private Drawable normalizeAndWrapToAdaptiveIcon(Drawable icon, boolean shrinkNonAdaptiveIcons,
+ RectF outIconBounds, float[] outScale) {
+ float scale = 1f;
+
+ if (shrinkNonAdaptiveIcons) {
+ boolean[] outShape = new boolean[1];
+ if (mWrapperIcon == null) {
+ mWrapperIcon = mContext.getDrawable(R.drawable.adaptive_icon_drawable_wrapper)
+ .mutate();
+ }
+ AdaptiveIconDrawable dr = (AdaptiveIconDrawable) mWrapperIcon;
+ dr.setBounds(0, 0, 1, 1);
+ scale = getNormalizer().getScale(icon, outIconBounds);
+ if (ATLEAST_OREO && !(icon instanceof AdaptiveIconDrawable)) {
+ FixedScaleDrawable fsd = ((FixedScaleDrawable) dr.getForeground());
+ fsd.setDrawable(icon);
+ fsd.setScale(scale);
+ icon = dr;
+ scale = getNormalizer().getScale(icon, outIconBounds);
+
+ ((ColorDrawable) dr.getBackground()).setColor(mWrapperBackgroundColor);
+ }
+ } else {
+ scale = getNormalizer().getScale(icon, outIconBounds);
+ }
+
+ outScale[0] = scale;
+ return icon;
+ }
+
+ /**
+ * Adds the {@param badge} on top of {@param target} using the badge dimensions.
+ */
+ public void badgeWithDrawable(Bitmap target, Drawable badge) {
+ mCanvas.setBitmap(target);
+ badgeWithDrawable(mCanvas, badge);
+ mCanvas.setBitmap(null);
+ }
+
+ /**
+ * Adds the {@param badge} on top of {@param target} using the badge dimensions.
+ */
+ public void badgeWithDrawable(Canvas target, Drawable badge) {
+ int badgeSize = mContext.getResources().getDimensionPixelSize(R.dimen.profile_badge_size);
+ badge.setBounds(mIconBitmapSize - badgeSize, mIconBitmapSize - badgeSize,
+ mIconBitmapSize, mIconBitmapSize);
+ badge.draw(target);
+ }
+
+ /**
+ * @param scale the scale to apply before drawing {@param icon} on the canvas
+ */
+ private Bitmap createIconBitmap(Drawable icon, float scale) {
+ Bitmap bitmap = Bitmap.createBitmap(mIconBitmapSize, mIconBitmapSize,
+ Bitmap.Config.ARGB_8888);
+ mCanvas.setBitmap(bitmap);
+ mOldBounds.set(icon.getBounds());
+
+ if (ATLEAST_OREO && icon instanceof AdaptiveIconDrawable) {
+ int offset = Math.max((int) Math.ceil(BLUR_FACTOR * mIconBitmapSize),
+ Math.round(mIconBitmapSize * (1 - scale) / 2 ));
+ icon.setBounds(offset, offset, mIconBitmapSize - offset, mIconBitmapSize - offset);
+ icon.draw(mCanvas);
+ } else {
+ if (icon instanceof BitmapDrawable) {
+ BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
+ Bitmap b = bitmapDrawable.getBitmap();
+ if (bitmap != null && b.getDensity() == Bitmap.DENSITY_NONE) {
+ bitmapDrawable.setTargetDensity(mContext.getResources().getDisplayMetrics());
+ }
+ }
+ int width = mIconBitmapSize;
+ int height = mIconBitmapSize;
+
+ int intrinsicWidth = icon.getIntrinsicWidth();
+ int intrinsicHeight = icon.getIntrinsicHeight();
+ if (intrinsicWidth > 0 && intrinsicHeight > 0) {
+ // Scale the icon proportionally to the icon dimensions
+ final float ratio = (float) intrinsicWidth / intrinsicHeight;
+ if (intrinsicWidth > intrinsicHeight) {
+ height = (int) (width / ratio);
+ } else if (intrinsicHeight > intrinsicWidth) {
+ width = (int) (height * ratio);
+ }
+ }
+ final int left = (mIconBitmapSize - width) / 2;
+ final int top = (mIconBitmapSize - height) / 2;
+ icon.setBounds(left, top, left + width, top + height);
+ mCanvas.save();
+ mCanvas.scale(scale, scale, mIconBitmapSize / 2, mIconBitmapSize / 2);
+ icon.draw(mCanvas);
+ mCanvas.restore();
+
+ }
+ icon.setBounds(mOldBounds);
+ mCanvas.setBitmap(null);
+ return bitmap;
+ }
+
+ /**
+ * An extension of {@link BitmapDrawable} which returns the bitmap pixel size as intrinsic size.
+ * This allows the badging to be done based on the action bitmap size rather than
+ * the scaled bitmap size.
+ */
+ private static class FixedSizeBitmapDrawable extends BitmapDrawable {
+
+ public FixedSizeBitmapDrawable(Bitmap bitmap) {
+ super(null, bitmap);
+ }
+
+ @Override
+ public int getIntrinsicHeight() {
+ return getBitmap().getWidth();
+ }
+
+ @Override
+ public int getIntrinsicWidth() {
+ return getBitmap().getWidth();
+ }
+ }
+}
diff --git a/iconloaderlib/src/com/android.launcher3/icons/BitmapInfo.java b/iconloaderlib/src/com/android.launcher3/icons/BitmapInfo.java
new file mode 100644
index 0000000..245561e
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/BitmapInfo.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+package com.android.launcher3.icons;
+
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.Config;
+
+public class BitmapInfo {
+
+ public static final Bitmap LOW_RES_ICON = Bitmap.createBitmap(1, 1, Config.ALPHA_8);
+
+ public Bitmap icon;
+ public int color;
+
+ public void applyTo(BitmapInfo info) {
+ info.icon = icon;
+ info.color = color;
+ }
+
+ public final boolean isLowRes() {
+ return LOW_RES_ICON == icon;
+ }
+
+ public static BitmapInfo fromBitmap(Bitmap bitmap) {
+ return fromBitmap(bitmap, null);
+ }
+
+ public static BitmapInfo fromBitmap(Bitmap bitmap, ColorExtractor dominantColorExtractor) {
+ BitmapInfo info = new BitmapInfo();
+ info.icon = bitmap;
+ info.color = dominantColorExtractor != null
+ ? dominantColorExtractor.findDominantColorByHue(bitmap)
+ : 0;
+ return info;
+ }
+}
diff --git a/iconloaderlib/src/com/android.launcher3/icons/ColorExtractor.java b/iconloaderlib/src/com/android.launcher3/icons/ColorExtractor.java
new file mode 100644
index 0000000..87bda82
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/ColorExtractor.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+package com.android.launcher3.icons;
+
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.util.SparseArray;
+import java.util.Arrays;
+
+/**
+ * Utility class for extracting colors from a bitmap.
+ */
+public class ColorExtractor {
+
+ private final int NUM_SAMPLES = 20;
+ private final float[] mTmpHsv = new float[3];
+ private final float[] mTmpHueScoreHistogram = new float[360];
+ private final int[] mTmpPixels = new int[NUM_SAMPLES];
+ private final SparseArray<Float> mTmpRgbScores = new SparseArray<>();
+
+ /**
+ * This picks a dominant color, looking for high-saturation, high-value, repeated hues.
+ * @param bitmap The bitmap to scan
+ */
+ public int findDominantColorByHue(Bitmap bitmap) {
+ return findDominantColorByHue(bitmap, NUM_SAMPLES);
+ }
+
+ /**
+ * This picks a dominant color, looking for high-saturation, high-value, repeated hues.
+ * @param bitmap The bitmap to scan
+ */
+ public int findDominantColorByHue(Bitmap bitmap, int samples) {
+ final int height = bitmap.getHeight();
+ final int width = bitmap.getWidth();
+ int sampleStride = (int) Math.sqrt((height * width) / samples);
+ if (sampleStride < 1) {
+ sampleStride = 1;
+ }
+
+ // This is an out-param, for getting the hsv values for an rgb
+ float[] hsv = mTmpHsv;
+ Arrays.fill(hsv, 0);
+
+ // First get the best hue, by creating a histogram over 360 hue buckets,
+ // where each pixel contributes a score weighted by saturation, value, and alpha.
+ float[] hueScoreHistogram = mTmpHueScoreHistogram;
+ Arrays.fill(hueScoreHistogram, 0);
+ float highScore = -1;
+ int bestHue = -1;
+
+ int[] pixels = mTmpPixels;
+ Arrays.fill(pixels, 0);
+ int pixelCount = 0;
+
+ for (int y = 0; y < height; y += sampleStride) {
+ for (int x = 0; x < width; x += sampleStride) {
+ int argb = bitmap.getPixel(x, y);
+ int alpha = 0xFF & (argb >> 24);
+ if (alpha < 0x80) {
+ // Drop mostly-transparent pixels.
+ continue;
+ }
+ // Remove the alpha channel.
+ int rgb = argb | 0xFF000000;
+ Color.colorToHSV(rgb, hsv);
+ // Bucket colors by the 360 integer hues.
+ int hue = (int) hsv[0];
+ if (hue < 0 || hue >= hueScoreHistogram.length) {
+ // Defensively avoid array bounds violations.
+ continue;
+ }
+ if (pixelCount < samples) {
+ pixels[pixelCount++] = rgb;
+ }
+ float score = hsv[1] * hsv[2];
+ hueScoreHistogram[hue] += score;
+ if (hueScoreHistogram[hue] > highScore) {
+ highScore = hueScoreHistogram[hue];
+ bestHue = hue;
+ }
+ }
+ }
+
+ SparseArray<Float> rgbScores = mTmpRgbScores;
+ rgbScores.clear();
+ int bestColor = 0xff000000;
+ highScore = -1;
+ // Go back over the RGB colors that match the winning hue,
+ // creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
+ // The highest-scoring RGB color wins.
+ for (int i = 0; i < pixelCount; i++) {
+ int rgb = pixels[i];
+ Color.colorToHSV(rgb, hsv);
+ int hue = (int) hsv[0];
+ if (hue == bestHue) {
+ float s = hsv[1];
+ float v = hsv[2];
+ int bucket = (int) (s * 100) + (int) (v * 10000);
+ // Score by cumulative saturation * value.
+ float score = s * v;
+ Float oldTotal = rgbScores.get(bucket);
+ float newTotal = oldTotal == null ? score : oldTotal + score;
+ rgbScores.put(bucket, newTotal);
+ if (newTotal > highScore) {
+ highScore = newTotal;
+ // All the colors in the winning bucket are very similar. Last in wins.
+ bestColor = rgb;
+ }
+ }
+ }
+ return bestColor;
+ }
+}
diff --git a/iconloaderlib/src/com/android.launcher3/icons/FixedScaleDrawable.java b/iconloaderlib/src/com/android.launcher3/icons/FixedScaleDrawable.java
new file mode 100644
index 0000000..e594f47
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/FixedScaleDrawable.java
@@ -0,0 +1,56 @@
+package com.android.launcher3.icons;
+
+import android.annotation.TargetApi;
+import android.content.res.Resources;
+import android.content.res.Resources.Theme;
+import android.graphics.Canvas;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.DrawableWrapper;
+import android.os.Build;
+import android.util.AttributeSet;
+
+import org.xmlpull.v1.XmlPullParser;
+
+/**
+ * Extension of {@link DrawableWrapper} which scales the child drawables by a fixed amount.
+ */
+@TargetApi(Build.VERSION_CODES.N)
+public class FixedScaleDrawable extends DrawableWrapper {
+
+ // TODO b/33553066 use the constant defined in MaskableIconDrawable
+ private static final float LEGACY_ICON_SCALE = .7f * .6667f;
+ private float mScaleX, mScaleY;
+
+ public FixedScaleDrawable() {
+ super(new ColorDrawable());
+ mScaleX = LEGACY_ICON_SCALE;
+ mScaleY = LEGACY_ICON_SCALE;
+ }
+
+ @Override
+ public void draw(Canvas canvas) {
+ int saveCount = canvas.save();
+ canvas.scale(mScaleX, mScaleY,
+ getBounds().exactCenterX(), getBounds().exactCenterY());
+ super.draw(canvas);
+ canvas.restoreToCount(saveCount);
+ }
+
+ @Override
+ public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs) { }
+
+ @Override
+ public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme) { }
+
+ public void setScale(float scale) {
+ float h = getIntrinsicHeight();
+ float w = getIntrinsicWidth();
+ mScaleX = scale * LEGACY_ICON_SCALE;
+ mScaleY = scale * LEGACY_ICON_SCALE;
+ if (h > w && w > 0) {
+ mScaleX *= w / h;
+ } else if (w > h && h > 0) {
+ mScaleY *= h / w;
+ }
+ }
+}
diff --git a/iconloaderlib/src/com/android.launcher3/icons/IconNormalizer.java b/iconloaderlib/src/com/android.launcher3/icons/IconNormalizer.java
new file mode 100644
index 0000000..05908df
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/IconNormalizer.java
@@ -0,0 +1,280 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.launcher3.icons;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.AdaptiveIconDrawable;
+import android.graphics.drawable.Drawable;
+
+import java.nio.ByteBuffer;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public class IconNormalizer {
+
+ private static final String TAG = "IconNormalizer";
+ private static final boolean DEBUG = false;
+ // Ratio of icon visible area to full icon size for a square shaped icon
+ private static final float MAX_SQUARE_AREA_FACTOR = 375.0f / 576;
+ // Ratio of icon visible area to full icon size for a circular shaped icon
+ private static final float MAX_CIRCLE_AREA_FACTOR = 380.0f / 576;
+
+ private static final float CIRCLE_AREA_BY_RECT = (float) Math.PI / 4;
+
+ // Slope used to calculate icon visible area to full icon size for any generic shaped icon.
+ private static final float LINEAR_SCALE_SLOPE =
+ (MAX_CIRCLE_AREA_FACTOR - MAX_SQUARE_AREA_FACTOR) / (1 - CIRCLE_AREA_BY_RECT);
+
+ private static final int MIN_VISIBLE_ALPHA = 40;
+
+ private static final float SCALE_NOT_INITIALIZED = 0;
+
+ // Ratio of the diameter of an normalized circular icon to the actual icon size.
+ public static final float ICON_VISIBLE_AREA_FACTOR = 0.92f;
+
+ private final int mMaxSize;
+ private final Bitmap mBitmap;
+ private final Canvas mCanvas;
+ private final byte[] mPixels;
+
+ private final Rect mAdaptiveIconBounds;
+ private float mAdaptiveIconScale;
+
+ // for each y, stores the position of the leftmost x and the rightmost x
+ private final float[] mLeftBorder;
+ private final float[] mRightBorder;
+ private final Rect mBounds;
+
+ /** package private **/
+ IconNormalizer(Context context, int iconBitmapSize) {
+ // Use twice the icon size as maximum size to avoid scaling down twice.
+ mMaxSize = iconBitmapSize * 2;
+ mBitmap = Bitmap.createBitmap(mMaxSize, mMaxSize, Bitmap.Config.ALPHA_8);
+ mCanvas = new Canvas(mBitmap);
+ mPixels = new byte[mMaxSize * mMaxSize];
+ mLeftBorder = new float[mMaxSize];
+ mRightBorder = new float[mMaxSize];
+ mBounds = new Rect();
+ mAdaptiveIconBounds = new Rect();
+
+ mAdaptiveIconScale = SCALE_NOT_INITIALIZED;
+ }
+
+ /**
+ * Returns the amount by which the {@param d} should be scaled (in both dimensions) so that it
+ * matches the design guidelines for a launcher icon.
+ *
+ * We first calculate the convex hull of the visible portion of the icon.
+ * This hull then compared with the bounding rectangle of the hull to find how closely it
+ * resembles a circle and a square, by comparing the ratio of the areas. Note that this is not an
+ * ideal solution but it gives satisfactory result without affecting the performance.
+ *
+ * This closeness is used to determine the ratio of hull area to the full icon size.
+ * Refer {@link #MAX_CIRCLE_AREA_FACTOR} and {@link #MAX_SQUARE_AREA_FACTOR}
+ *
+ * @param outBounds optional rect to receive the fraction distance from each edge.
+ */
+ public synchronized float getScale(@NonNull Drawable d, @Nullable RectF outBounds) {
+ if (BaseIconFactory.ATLEAST_OREO && d instanceof AdaptiveIconDrawable) {
+ if (mAdaptiveIconScale != SCALE_NOT_INITIALIZED) {
+ if (outBounds != null) {
+ outBounds.set(mAdaptiveIconBounds);
+ }
+ return mAdaptiveIconScale;
+ }
+ }
+ int width = d.getIntrinsicWidth();
+ int height = d.getIntrinsicHeight();
+ if (width <= 0 || height <= 0) {
+ width = width <= 0 || width > mMaxSize ? mMaxSize : width;
+ height = height <= 0 || height > mMaxSize ? mMaxSize : height;
+ } else if (width > mMaxSize || height > mMaxSize) {
+ int max = Math.max(width, height);
+ width = mMaxSize * width / max;
+ height = mMaxSize * height / max;
+ }
+
+ mBitmap.eraseColor(Color.TRANSPARENT);
+ d.setBounds(0, 0, width, height);
+ d.draw(mCanvas);
+
+ ByteBuffer buffer = ByteBuffer.wrap(mPixels);
+ buffer.rewind();
+ mBitmap.copyPixelsToBuffer(buffer);
+
+ // Overall bounds of the visible icon.
+ int topY = -1;
+ int bottomY = -1;
+ int leftX = mMaxSize + 1;
+ int rightX = -1;
+
+ // Create border by going through all pixels one row at a time and for each row find
+ // the first and the last non-transparent pixel. Set those values to mLeftBorder and
+ // mRightBorder and use -1 if there are no visible pixel in the row.
+
+ // buffer position
+ int index = 0;
+ // buffer shift after every row, width of buffer = mMaxSize
+ int rowSizeDiff = mMaxSize - width;
+ // first and last position for any row.
+ int firstX, lastX;
+
+ for (int y = 0; y < height; y++) {
+ firstX = lastX = -1;
+ for (int x = 0; x < width; x++) {
+ if ((mPixels[index] & 0xFF) > MIN_VISIBLE_ALPHA) {
+ if (firstX == -1) {
+ firstX = x;
+ }
+ lastX = x;
+ }
+ index++;
+ }
+ index += rowSizeDiff;
+
+ mLeftBorder[y] = firstX;
+ mRightBorder[y] = lastX;
+
+ // If there is at least one visible pixel, update the overall bounds.
+ if (firstX != -1) {
+ bottomY = y;
+ if (topY == -1) {
+ topY = y;
+ }
+
+ leftX = Math.min(leftX, firstX);
+ rightX = Math.max(rightX, lastX);
+ }
+ }
+
+ if (topY == -1 || rightX == -1) {
+ // No valid pixels found. Do not scale.
+ return 1;
+ }
+
+ convertToConvexArray(mLeftBorder, 1, topY, bottomY);
+ convertToConvexArray(mRightBorder, -1, topY, bottomY);
+
+ // Area of the convex hull
+ float area = 0;
+ for (int y = 0; y < height; y++) {
+ if (mLeftBorder[y] <= -1) {
+ continue;
+ }
+ area += mRightBorder[y] - mLeftBorder[y] + 1;
+ }
+
+ // Area of the rectangle required to fit the convex hull
+ float rectArea = (bottomY + 1 - topY) * (rightX + 1 - leftX);
+ float hullByRect = area / rectArea;
+
+ float scaleRequired;
+ if (hullByRect < CIRCLE_AREA_BY_RECT) {
+ scaleRequired = MAX_CIRCLE_AREA_FACTOR;
+ } else {
+ scaleRequired = MAX_SQUARE_AREA_FACTOR + LINEAR_SCALE_SLOPE * (1 - hullByRect);
+ }
+ mBounds.left = leftX;
+ mBounds.right = rightX;
+
+ mBounds.top = topY;
+ mBounds.bottom = bottomY;
+
+ if (outBounds != null) {
+ outBounds.set(((float) mBounds.left) / width, ((float) mBounds.top) / height,
+ 1 - ((float) mBounds.right) / width,
+ 1 - ((float) mBounds.bottom) / height);
+ }
+ float areaScale = area / (width * height);
+ // Use sqrt of the final ratio as the images is scaled across both width and height.
+ float scale = areaScale > scaleRequired ? (float) Math.sqrt(scaleRequired / areaScale) : 1;
+ if (BaseIconFactory.ATLEAST_OREO && d instanceof AdaptiveIconDrawable &&
+ mAdaptiveIconScale == SCALE_NOT_INITIALIZED) {
+ mAdaptiveIconScale = scale;
+ mAdaptiveIconBounds.set(mBounds);
+ }
+ return scale;
+ }
+
+ /**
+ * Modifies {@param xCoordinates} to represent a convex border. Fills in all missing values
+ * (except on either ends) with appropriate values.
+ * @param xCoordinates map of x coordinate per y.
+ * @param direction 1 for left border and -1 for right border.
+ * @param topY the first Y position (inclusive) with a valid value.
+ * @param bottomY the last Y position (inclusive) with a valid value.
+ */
+ private static void convertToConvexArray(
+ float[] xCoordinates, int direction, int topY, int bottomY) {
+ int total = xCoordinates.length;
+ // The tangent at each pixel.
+ float[] angles = new float[total - 1];
+
+ int first = topY; // First valid y coordinate
+ int last = -1; // Last valid y coordinate which didn't have a missing value
+
+ float lastAngle = Float.MAX_VALUE;
+
+ for (int i = topY + 1; i <= bottomY; i++) {
+ if (xCoordinates[i] <= -1) {
+ continue;
+ }
+ int start;
+
+ if (lastAngle == Float.MAX_VALUE) {
+ start = first;
+ } else {
+ float currentAngle = (xCoordinates[i] - xCoordinates[last]) / (i - last);
+ start = last;
+ // If this position creates a concave angle, keep moving up until we find a
+ // position which creates a convex angle.
+ if ((currentAngle - lastAngle) * direction < 0) {
+ while (start > first) {
+ start --;
+ currentAngle = (xCoordinates[i] - xCoordinates[start]) / (i - start);
+ if ((currentAngle - angles[start]) * direction >= 0) {
+ break;
+ }
+ }
+ }
+ }
+
+ // Reset from last check
+ lastAngle = (xCoordinates[i] - xCoordinates[start]) / (i - start);
+ // Update all the points from start.
+ for (int j = start; j < i; j++) {
+ angles[j] = lastAngle;
+ xCoordinates[j] = xCoordinates[start] + lastAngle * (j - start);
+ }
+ last = i;
+ }
+ }
+
+ /**
+ * @return The diameter of the normalized circle that fits inside of the square (size x size).
+ */
+ public static int getNormalizedCircleSize(int size) {
+ float area = size * size * MAX_CIRCLE_AREA_FACTOR;
+ return (int) Math.round(Math.sqrt((4 * area) / Math.PI));
+ }
+}
diff --git a/iconloaderlib/src/com/android.launcher3/icons/ShadowGenerator.java b/iconloaderlib/src/com/android.launcher3/icons/ShadowGenerator.java
new file mode 100644
index 0000000..6491b7e
--- /dev/null
+++ b/iconloaderlib/src/com/android.launcher3/icons/ShadowGenerator.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+package com.android.launcher3.icons;
+
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.Config;
+import android.graphics.BlurMaskFilter;
+import android.graphics.BlurMaskFilter.Blur;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.graphics.RectF;
+
+import androidx.core.graphics.ColorUtils;
+
+/**
+ * Utility class to add shadows to bitmaps.
+ */
+public class ShadowGenerator {
+ public static final float BLUR_FACTOR = 0.5f/48;
+
+ // Percent of actual icon size
+ public static final float KEY_SHADOW_DISTANCE = 1f/48;
+ private static final int KEY_SHADOW_ALPHA = 61;
+ // Percent of actual icon size
+ private static final float HALF_DISTANCE = 0.5f;
+ private static final int AMBIENT_SHADOW_ALPHA = 30;
+
+ private final int mIconSize;
+
+ private final Paint mBlurPaint;
+ private final Paint mDrawPaint;
+ private final BlurMaskFilter mDefaultBlurMaskFilter;
+
+ public ShadowGenerator(int iconSize) {
+ mIconSize = iconSize;
+ mBlurPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+ mDrawPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+ mDefaultBlurMaskFilter = new BlurMaskFilter(mIconSize * BLUR_FACTOR, Blur.NORMAL);
+ }
+
+ public synchronized void recreateIcon(Bitmap icon, Canvas out) {
+ recreateIcon(icon, mDefaultBlurMaskFilter, AMBIENT_SHADOW_ALPHA, KEY_SHADOW_ALPHA, out);
+ }
+
+ public synchronized void recreateIcon(Bitmap icon, BlurMaskFilter blurMaskFilter,
+ int ambientAlpha, int keyAlpha, Canvas out) {
+ int[] offset = new int[2];
+ mBlurPaint.setMaskFilter(blurMaskFilter);
+ Bitmap shadow = icon.extractAlpha(mBlurPaint, offset);
+
+ // Draw ambient shadow
+ mDrawPaint.setAlpha(ambientAlpha);
+ out.drawBitmap(shadow, offset[0], offset[1], mDrawPaint);
+
+ // Draw key shadow
+ mDrawPaint.setAlpha(keyAlpha);
+ out.drawBitmap(shadow, offset[0], offset[1] + KEY_SHADOW_DISTANCE * mIconSize, mDrawPaint);
+
+ // Draw the icon
+ mDrawPaint.setAlpha(255);
+ out.drawBitmap(icon, 0, 0, mDrawPaint);
+ }
+
+ /**
+ * Returns the minimum amount by which an icon with {@param bounds} should be scaled
+ * so that the shadows do not get clipped.
+ */
+ public static float getScaleForBounds(RectF bounds) {
+ float scale = 1;
+
+ // For top, left & right, we need same space.
+ float minSide = Math.min(Math.min(bounds.left, bounds.right), bounds.top);
+ if (minSide < BLUR_FACTOR) {
+ scale = (HALF_DISTANCE - BLUR_FACTOR) / (HALF_DISTANCE - minSide);
+ }
+
+ float bottomSpace = BLUR_FACTOR + KEY_SHADOW_DISTANCE;
+ if (bounds.bottom < bottomSpace) {
+ scale = Math.min(scale, (HALF_DISTANCE - bottomSpace) / (HALF_DISTANCE - bounds.bottom));
+ }
+ return scale;
+ }
+
+ public static class Builder {
+
+ public final RectF bounds = new RectF();
+ public final int color;
+
+ public int ambientShadowAlpha = AMBIENT_SHADOW_ALPHA;
+
+ public float shadowBlur;
+
+ public float keyShadowDistance;
+ public int keyShadowAlpha = KEY_SHADOW_ALPHA;
+ public float radius;
+
+ public Builder(int color) {
+ this.color = color;
+ }
+
+ public Builder setupBlurForSize(int height) {
+ shadowBlur = height * 1f / 24;
+ keyShadowDistance = height * 1f / 16;
+ return this;
+ }
+
+ public Bitmap createPill(int width, int height) {
+ radius = height / 2f;
+
+ int centerX = Math.round(width / 2f + shadowBlur);
+ int centerY = Math.round(radius + shadowBlur + keyShadowDistance);
+ int center = Math.max(centerX, centerY);
+ bounds.set(0, 0, width, height);
+ bounds.offsetTo(center - width / 2f, center - height / 2f);
+
+ int size = center * 2;
+ Bitmap result = Bitmap.createBitmap(size, size, Config.ARGB_8888);
+ drawShadow(new Canvas(result));
+ return result;
+ }
+
+ public void drawShadow(Canvas c) {
+ Paint p = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+ p.setColor(color);
+
+ // Key shadow
+ p.setShadowLayer(shadowBlur, 0, keyShadowDistance,
+ ColorUtils.setAlphaComponent(Color.BLACK, keyShadowAlpha));
+ c.drawRoundRect(bounds, radius, radius, p);
+
+ // Ambient shadow
+ p.setShadowLayer(shadowBlur, 0, 0,
+ ColorUtils.setAlphaComponent(Color.BLACK, ambientShadowAlpha));
+ c.drawRoundRect(bounds, radius, radius, p);
+
+ if (Color.alpha(color) < 255) {
+ // Clear any content inside the pill-rect for translucent fill.
+ p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
+ p.clearShadowLayer();
+ p.setColor(Color.BLACK);
+ c.drawRoundRect(bounds, radius, radius, p);
+
+ p.setXfermode(null);
+ p.setColor(color);
+ c.drawRoundRect(bounds, radius, radius, p);
+ }
+ }
+ }
+}