Move WallpaperColorHints RPC calls to a background thread.
Bug: 251502424
Test: Theme behavior still works fine. Compilation worked well.
Change-Id: I18d0b2094f3ba841846ff98567acc7327a7bd220
diff --git a/src/com/android/launcher3/BaseDraggingActivity.java b/src/com/android/launcher3/BaseDraggingActivity.java
index 8876a1b..808cf70 100644
--- a/src/com/android/launcher3/BaseDraggingActivity.java
+++ b/src/com/android/launcher3/BaseDraggingActivity.java
@@ -17,12 +17,7 @@
package com.android.launcher3;
import static com.android.launcher3.util.DisplayController.CHANGE_ROTATION;
-import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
-import static com.android.launcher3.util.Executors.THREAD_POOL_EXECUTOR;
-import android.app.WallpaperColors;
-import android.app.WallpaperManager;
-import android.app.WallpaperManager.OnColorsChangedListener;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Point;
@@ -32,6 +27,7 @@
import android.view.Display;
import android.view.View;
+import androidx.annotation.MainThread;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
@@ -41,9 +37,11 @@
import com.android.launcher3.util.DisplayController;
import com.android.launcher3.util.DisplayController.DisplayInfoChangeListener;
import com.android.launcher3.util.DisplayController.Info;
+import com.android.launcher3.util.OnColorHintListener;
import com.android.launcher3.util.RunnableList;
import com.android.launcher3.util.Themes;
import com.android.launcher3.util.TraceHelper;
+import com.android.launcher3.util.WallpaperColorHints;
import com.android.launcher3.util.WindowBounds;
/**
@@ -51,7 +49,7 @@
*/
@SuppressWarnings("NewApi")
public abstract class BaseDraggingActivity extends BaseActivity
- implements OnColorsChangedListener, DisplayInfoChangeListener {
+ implements OnColorHintListener, DisplayInfoChangeListener {
private static final String TAG = "BaseDraggingActivity";
@@ -63,8 +61,7 @@
protected boolean mIsSafeModeEnabled;
private Runnable mOnStartCallback;
- private RunnableList mOnResumeCallbacks = new RunnableList();
-
+ private final RunnableList mOnResumeCallbacks = new RunnableList();
private int mThemeRes = R.style.AppTheme;
@Override
@@ -76,10 +73,7 @@
DisplayController.INSTANCE.get(this).addChangeListener(this);
// Update theme
- if (Utilities.ATLEAST_P) {
- THREAD_POOL_EXECUTOR.execute(() -> getSystemService(WallpaperManager.class)
- .addOnColorsChangedListener(this, MAIN_EXECUTOR.getHandler()));
- }
+ WallpaperColorHints.get(this).registerOnColorHintsChangedListener(this);
int themeRes = Themes.getActivityThemeRes(this);
if (themeRes != mThemeRes) {
mThemeRes = themeRes;
@@ -97,8 +91,9 @@
mOnResumeCallbacks.add(callback);
}
+ @MainThread
@Override
- public void onColorsChanged(WallpaperColors wallpaperColors, int which) {
+ public void onColorHintsChanged(int colorHints) {
updateTheme();
}
@@ -175,10 +170,8 @@
@Override
protected void onDestroy() {
super.onDestroy();
- if (Utilities.ATLEAST_P) {
- getSystemService(WallpaperManager.class).removeOnColorsChangedListener(this);
- }
DisplayController.INSTANCE.get(this).removeChangeListener(this);
+ WallpaperColorHints.get(this).unregisterOnColorsChangedListener(this);
}
public void runOnceOnStart(Runnable action) {
diff --git a/src/com/android/launcher3/util/Themes.java b/src/com/android/launcher3/util/Themes.java
index a5c663f..60951ba 100644
--- a/src/com/android/launcher3/util/Themes.java
+++ b/src/com/android/launcher3/util/Themes.java
@@ -21,8 +21,6 @@
import static com.android.launcher3.LauncherPrefs.THEMED_ICONS;
-import android.app.WallpaperColors;
-import android.app.WallpaperManager;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
@@ -48,16 +46,9 @@
public static final String KEY_THEMED_ICONS = "themed_icons";
+ /** Gets the WallpaperColorHints and then uses those to get the correct activity theme res. */
public static int getActivityThemeRes(Context context) {
- final int colorHints;
- if (Utilities.ATLEAST_P) {
- WallpaperColors colors = context.getSystemService(WallpaperManager.class)
- .getWallpaperColors(WallpaperManager.FLAG_SYSTEM);
- colorHints = colors == null ? 0 : colors.getColorHints();
- } else {
- colorHints = 0;
- }
- return getActivityThemeRes(context, colorHints);
+ return getActivityThemeRes(context, WallpaperColorHints.get(context).getHints());
}
public static int getActivityThemeRes(Context context, int wallpaperColorHints) {
diff --git a/src/com/android/launcher3/util/WallpaperColorHints.kt b/src/com/android/launcher3/util/WallpaperColorHints.kt
new file mode 100644
index 0000000..1361c1e
--- /dev/null
+++ b/src/com/android/launcher3/util/WallpaperColorHints.kt
@@ -0,0 +1,95 @@
+/*
+ * 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.
+ */
+
+package com.android.launcher3.util
+
+import android.app.WallpaperColors
+import android.app.WallpaperManager
+import android.app.WallpaperManager.FLAG_SYSTEM
+import android.app.WallpaperManager.OnColorsChangedListener
+import android.content.Context
+import androidx.annotation.MainThread
+import androidx.annotation.VisibleForTesting
+import com.android.launcher3.Utilities
+import com.android.launcher3.util.Executors.MAIN_EXECUTOR
+import com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR
+
+/**
+ * This class caches the system's wallpaper color hints for use by other classes as a performance
+ * enhancer. It also centralizes all the WallpaperManager color hint code in one location.
+ */
+class WallpaperColorHints(private val context: Context) : SafeCloseable {
+ var hints: Int = 0
+ private set
+ private val wallpaperManager
+ get() = context.getSystemService(WallpaperManager::class.java)!!
+ private val onColorHintsChangedListeners = mutableListOf<OnColorHintListener>()
+ private val onClose: SafeCloseable
+
+ init {
+ if (Utilities.ATLEAST_S) {
+ hints = wallpaperManager.getWallpaperColors(FLAG_SYSTEM)?.colorHints ?: 0
+ val onColorsChangedListener = OnColorsChangedListener { colors, which ->
+ onColorsChanged(colors, which)
+ }
+ UI_HELPER_EXECUTOR.execute {
+ wallpaperManager.addOnColorsChangedListener(
+ onColorsChangedListener,
+ MAIN_EXECUTOR.handler
+ )
+ }
+ onClose = SafeCloseable {
+ UI_HELPER_EXECUTOR.execute {
+ wallpaperManager.removeOnColorsChangedListener(onColorsChangedListener)
+ }
+ }
+ } else {
+ onClose = SafeCloseable {}
+ }
+ }
+
+ @MainThread
+ private fun onColorsChanged(colors: WallpaperColors?, which: Int) {
+ if ((which and FLAG_SYSTEM) != 0 && Utilities.ATLEAST_S) {
+ val newHints = colors?.colorHints ?: 0
+ if (newHints != hints) {
+ hints = newHints
+ onColorHintsChangedListeners.forEach { it.onColorHintsChanged(newHints) }
+ }
+ }
+ }
+
+ override fun close() = onClose.close()
+
+ fun registerOnColorHintsChangedListener(listener: OnColorHintListener) {
+ onColorHintsChangedListeners.add(listener)
+ }
+
+ fun unregisterOnColorsChangedListener(listener: OnColorHintListener) {
+ onColorHintsChangedListeners.remove(listener)
+ }
+
+ companion object {
+ @VisibleForTesting
+ @JvmField
+ val INSTANCE = MainThreadInitializedObject { WallpaperColorHints(it) }
+ @JvmStatic fun get(context: Context): WallpaperColorHints = INSTANCE.get(context)
+ }
+}
+
+interface OnColorHintListener {
+ fun onColorHintsChanged(colorHints: Int)
+}