WIP ANDDEP-1045 Added utility class for switching status bar color automa…

buildSrc/components.json

@@ -2105,5 +2105,34 @@
     "samples": [],
     "has_mirror": false,
     "mirror_repo": ""
+  },
+  {
+    "id": "common-tools",
+    "version": "0.5.0",
+    "unstable_version": 0,
+    "stable": false,
+    "dir": "common-tools",
+    "libs": [
+      {
+        "name": "status-bar-switcher",
+        "dir": "lib-status-bar-switcher",
+        "artifact_name": "status-bar-switcher",
+        "third_party_dependencies": [
+          {
+            "name": "androidx.palette:palette-ktx",
+            "type": "implementation"
+          }
+        ],
+        "android_standard_dependencies": []
+      }
+    ],
+    "samples": [
+      {
+        "name": "common-tools-sample",
+        "dir": "sample"
+      }
+    ],
+    "has_mirror": false,
+    "mirror_repo": ""
   }
 ]

buildSrc/config.gradle

@@ -43,6 +43,7 @@ ext {
             "androidx.core:core"                               : "1.2.0",        //https://bit.ly/2yYY82h
             "androidx.core:core-ktx"                           : "1.2.0",        //http://bit.ly/2qY7ffW
             "androidx.constraintlayout:constraintlayout"       : "2.0.0-beta4",  //http://bit.ly/2S1WoNg
+            "androidx.palette:palette-ktx"                     : "1.0.0",        //https://bit.ly/30afhnJ
             "androidx.appcompat:appcompat"                     : "1.1.0",        //http://bit.ly/2zjueqh
             "androidx.lifecycle:lifecycle-runtime-ktx"         : "2.2.0",        //https://bit.ly/3anEaR2
             "androidx.multidex:multidex"                       : "2.0.1",        //http://bit.ly/2r6uX9G

common-tools/README.md

@@ -0,0 +1,6 @@
+# Common tools
+
+## Модули
+
+- [Status bar switcher](lib-status-bar-switcher)
+- [Пример](sample)

common-tools/RELEASE_NOTES.md

@@ -0,0 +1,7 @@
+# Common tools Release Notes
+
+- [0.5.0-alpha](#050-alpha)
+
+## 0.5.0-alpha
+##### Common tools
+* TODO

common-tools/lib-status-bar-switcher/.gitignore

@@ -0,0 +1 @@
+/build

common-tools/lib-status-bar-switcher/README.md

@@ -0,0 +1,23 @@
+# Status bar switcher
+
+Сущность для автоматического переключения цвета статус-бара в зависимости от цвета контента, находящегося под ним.
+
+# Использование
+[Пример использования для определенного экрана](../sample)
+
+Для того, чтобы цвет статус-бара переключался автоматически для каждого экрана, нужно воспользоваться ActivityLifecycleCallbacks:
+
+```kotlin
+object : Application.ActivityLifecycleCallbacks() {
+
+    //...
+
+    override fun onActivityResumed(activity: Activity) {
+        statusBarSwitcher.attach(activity)
+    }
+
+    override fun onActivityStopped(activity: Activity) {
+        statusBarSwitcher.detach()
+    }
+}
+```

common-tools/lib-status-bar-switcher/build.gradle

@@ -0,0 +1 @@
+apply from: "$rootDir/buildSrc/baseBuild.gradle"

common-tools/lib-status-bar-switcher/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="ru.surfstudio.android.common.tools.statusbarswitcher" />

common-tools/lib-status-bar-switcher/src/main/java/ru/surfstudio/android/common/tools/statusbarswitcher/StatusBarSwitcher.kt

@@ -0,0 +1,160 @@
+/*
+  Copyright (c) 2020-present, SurfStudio LLC.
+
+  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 ru.surfstudio.android.common.tools.statusbarswitcher
+
+import android.app.Activity
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Rect
+import android.os.AsyncTask
+import android.os.Build
+import android.util.DisplayMetrics
+import android.view.View
+import android.view.ViewTreeObserver
+import androidx.annotation.ColorInt
+import androidx.core.view.OnApplyWindowInsetsListener
+import androidx.core.view.ViewCompat
+import androidx.palette.graphics.Palette
+import kotlin.math.sqrt
+
+/**
+ * Helper class for switching status bar color automatically.
+ *
+ * Status bar color calculation based on the underlying content brightness.
+ */
+class StatusBarSwitcher(private val displayMetrics: DisplayMetrics) {
+
+    private val colorFilter = Palette.Filter { _, _ -> true }
+
+    private val width: Int
+        get() = displayMetrics.widthPixels
+
+    private var attachedActivity: Activity? = null
+
+    private val decorView: View?
+        get() = attachedActivity?.window?.decorView
+
+    private var statusBarHeight: Int = 0
+
+    private val statusBarHeightListener = OnApplyWindowInsetsListener { _, insets ->
+        statusBarHeight = insets.stableInsetTop
+        insets
+    }
+
+    private var hasStatusBarListenerAttached: Boolean = false
+
+    private val onPreDrawListener = ViewTreeObserver.OnPreDrawListener {
+        if (statusBarHeight != 0) {
+            val bitmap = Bitmap.createBitmap(width, statusBarHeight, Bitmap.Config.RGB_565)
+            val canvas = Canvas(bitmap)
+            val statusBarRect = Rect(0, 0, width, statusBarHeight)
+            canvas.clipRect(statusBarRect)
+            decorView?.draw(canvas)
+
+            Palette.from(bitmap)
+                    .clearFilters()
+                    .addFilter(colorFilter)
+                    .tryGenerate { palette ->
+                        val dominantColor = palette.getDominantColor(Color.WHITE)
+                        val isLightStatusBar = isBrightColor(dominantColor)
+                        attachedActivity?.let { setLightStatusBar(it, isLightStatusBar) }
+                    }
+        }
+        true
+    }
+
+    /**
+     * Sets status bar height manually.
+     */
+    fun setStatusBarHeight(statusBarHeight: Int) {
+        this.statusBarHeight = statusBarHeight
+    }
+
+    /**
+     * Attaches [StatusBarSwitcher] to the [activity].
+     *
+     * @param shouldDetectStatusBarHeight defines whether status bar height should be calculated
+     * automatically.
+     */
+    fun attach(
+            activity: Activity,
+            shouldDetectStatusBarHeight: Boolean = true
+    ) {
+        val decorView = activity.window.decorView
+        decorView.viewTreeObserver.addOnPreDrawListener(onPreDrawListener)
+        if (shouldDetectStatusBarHeight) {
+            ViewCompat.setOnApplyWindowInsetsListener(decorView, statusBarHeightListener)
+            hasStatusBarListenerAttached = true
+        }
+        attachedActivity = activity
+    }
+
+    /**
+     * Detaches [StatusBarSwitcher] from the latest activity.
+     */
+    fun detach() {
+        val activity = attachedActivity ?: return
+        attachedActivity = null
+
+        val decorView = activity.window.decorView ?: return
+        if (hasStatusBarListenerAttached) {
+            ViewCompat.setOnApplyWindowInsetsListener(decorView, null)
+            hasStatusBarListenerAttached = false
+        }
+        decorView.viewTreeObserver.removeOnPreDrawListener(onPreDrawListener)
+    }
+
+    /**
+     * Defines brightness of color.
+     *
+     * @return true, if color is bright; false otherwise.
+     */
+    private fun isBrightColor(@ColorInt color: Int): Boolean {
+        val rgb = intArrayOf(Color.red(color), Color.green(color), Color.blue(color))
+        val brightness = sqrt(
+                rgb[0] * rgb[0] * .241 +
+                        rgb[1] * rgb[1] * .691 +
+                        rgb[2] * rgb[2] * .068
+        )
+        return brightness >= 200
+    }
+
+    private fun Palette.Builder.tryGenerate(onGeneratedAction: (Palette) -> Unit): AsyncTask<Bitmap, Void, Palette> {
+        return this.generate { palette: Palette? ->
+            palette ?: return@generate
+            onGeneratedAction(palette)
+        }
+    }
+
+    companion object {
+
+        /**
+         * Toggles status bar color for the defined [activity].
+         */
+        fun setLightStatusBar(activity: Activity, isLightStatusBar: Boolean) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                val window = activity.window
+                val decorView = window?.decorView ?: return
+                val systemUiVisibilityFlags = decorView.systemUiVisibility
+                decorView.systemUiVisibility = when {
+                    isLightStatusBar -> systemUiVisibilityFlags or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
+                    else -> systemUiVisibilityFlags and View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
+                }
+            }
+        }
+    }
+}

common-tools/sample/.gitignore

@@ -0,0 +1 @@
+/build

common-tools/sample/build.gradle

@@ -0,0 +1,18 @@
+import ru.surfstudio.android.build.DependencyConfigurator
+
+apply from: "$rootDir/buildSrc/androidSample.gradle"
+
+android {
+    defaultConfig {
+        applicationId "ru.surfstudio.android.common.tools.sample"
+    }
+}
+
+dependencies {
+    DependencyConfigurator.projectImplementation(project, "status-bar-switcher")
+    DependencyConfigurator.projectImplementation(project, "sample-common")
+    DependencyConfigurator.projectImplementation(project, "imageloader")
+    DependencyConfigurator.projectImplementation(project, "easyadapter")
+
+    DependencyConfigurator.kapt(project, "com.google.dagger:dagger-compiler")
+}

common-tools/sample/src/main/AndroidManifest.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="ru.surfstudio.android.common.tools.sample">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:name="ru.surfstudio.android.sample.dagger.app.DefaultApp"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".screen.main.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".screen.status_bar_switcher.StatusBarSwitcherActivityView"
+            android:theme="@style/AppTheme.NoActionBar" />
+    </application>
+
+</manifest>

common-tools/sample/src/main/java/ru/surfstudio/android/common/tools/sample/screen/main/MainActivity.kt

@@ -0,0 +1,24 @@
+package ru.surfstudio.android.common.tools.sample.screen.main
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Button
+import androidx.appcompat.app.AppCompatActivity
+import kotlinx.android.synthetic.main.activity_main.*
+import ru.surfstudio.android.common.tools.sample.R
+import ru.surfstudio.android.common.tools.sample.screen.status_bar_switcher.StatusBarSwitcherActivityView
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setOnClickListener(open_status_bar_switcher_btn, StatusBarSwitcherActivityView::class.java)
+    }
+
+    private fun setOnClickListener(btn: Button, activityClass: Class<*>) {
+        btn.setOnClickListener {
+            startActivity(Intent(this, activityClass))
+        }
+    }
+}

common-tools/sample/src/main/java/ru/surfstudio/android/common/tools/sample/screen/status_bar_switcher/StatusBarSwitcherActivityRoute.kt

@@ -0,0 +1,11 @@
+package ru.surfstudio.android.common.tools.sample.screen.status_bar_switcher
+
+import android.content.Context
+import android.content.Intent
+import ru.surfstudio.android.core.ui.navigation.activity.route.ActivityRoute
+
+class StatusBarSwitcherActivityRoute : ActivityRoute() {
+
+    override fun prepareIntent(context: Context) =
+            Intent(context, StatusBarSwitcherActivityView::class.java)
+}