package com.lcjian.library.widget;
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import java.lang.reflect.Method;
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import android.annotation.SuppressLint;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.content.Context;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.graphics.drawable.Drawable;
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import android.os.Build;
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import android.util.DisplayMetrics;
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import android.util.TypedValue;
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import android.view.Gravity;
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import android.view.View;
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import android.view.ViewConfiguration;
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import android.view.ViewGroup;
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import android.view.Window;
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import android.view.WindowManager;
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import android.widget.FrameLayout.LayoutParams;
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/*
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* Copyright (C) 2013 readyState Software Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Class to manage status and navigation bar tint effects when using KitKat
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* translucent system UI modes.
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*/
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public class SystemBarTintManager {
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static {
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// Android allows a system property to override the presence of the
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// navigation bar.
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// Used by the emulator.
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// See
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// https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
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try {
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Class c = Class.forName("android.os.SystemProperties");
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Method m = c.getDeclaredMethod("get", String.class);
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m.setAccessible(true);
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sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");
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} catch (Throwable e) {
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sNavBarOverride = null;
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}
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}
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}
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/**
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* The default system bar tint color value.
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*/
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public static final int DEFAULT_TINT_COLOR = 0x99000000;
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private static String sNavBarOverride;
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private final SystemBarConfig mConfig;
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private boolean mStatusBarAvailable;
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private boolean mNavBarAvailable;
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private boolean mStatusBarTintEnabled;
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private boolean mNavBarTintEnabled;
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private View mStatusBarTintView;
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private View mNavBarTintView;
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/**
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* Constructor. Call this in the host activity onCreate method after its
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* content view has been set. You should always create new instances when
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* the host activity is recreated.
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*
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* @param activity The host activity.
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*/
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@TargetApi(19)
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@SuppressWarnings("ResourceType")
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public SystemBarTintManager(Activity activity) {
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Window win = activity.getWindow();
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ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
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// check theme attrs
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int[] attrs = {android.R.attr.windowTranslucentStatus,
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android.R.attr.windowTranslucentNavigation};
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TypedArray a = activity.obtainStyledAttributes(attrs);
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try {
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mStatusBarAvailable = a.getBoolean(0, false);
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mNavBarAvailable = a.getBoolean(1, false);
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} finally {
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a.recycle();
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}
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// check window flags
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WindowManager.LayoutParams winParams = win.getAttributes();
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int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
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if ((winParams.flags & bits) != 0) {
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mStatusBarAvailable = true;
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}
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bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
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if ((winParams.flags & bits) != 0) {
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mNavBarAvailable = true;
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}
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}
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mConfig = new SystemBarConfig(activity, mStatusBarAvailable,
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mNavBarAvailable);
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// device might not have virtual navigation keys
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if (!mConfig.hasNavigtionBar()) {
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mNavBarAvailable = false;
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}
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if (mStatusBarAvailable) {
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setupStatusBarView(activity, decorViewGroup);
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}
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if (mNavBarAvailable) {
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setupNavBarView(activity, decorViewGroup);
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}
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}
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/**
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* Enable tinting of the system status bar.
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* <p/>
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* If the platform is running Jelly Bean or earlier, or translucent system
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* UI modes have not been enabled in either the theme or via window flags,
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* then this method does nothing.
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*
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* @param enabled True to enable tinting, false to disable it (default).
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*/
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public void setStatusBarTintEnabled(boolean enabled) {
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mStatusBarTintEnabled = enabled;
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if (mStatusBarAvailable) {
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mStatusBarTintView
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.setVisibility(enabled ? View.VISIBLE : View.GONE);
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}
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}
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/**
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* Enable tinting of the system navigation bar.
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* <p/>
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* If the platform does not have soft navigation keys, is running Jelly Bean
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* or earlier, or translucent system UI modes have not been enabled in
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* either the theme or via window flags, then this method does nothing.
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*
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* @param enabled True to enable tinting, false to disable it (default).
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*/
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public void setNavigationBarTintEnabled(boolean enabled) {
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mNavBarTintEnabled = enabled;
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if (mNavBarAvailable) {
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mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
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}
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}
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/**
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* Apply the specified color tint to all system UI bars.
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*
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* @param color The color of the background tint.
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*/
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public void setTintColor(int color) {
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setStatusBarTintColor(color);
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setNavigationBarTintColor(color);
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}
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/**
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* Apply the specified drawable or color resource to all system UI bars.
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*
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* @param res The identifier of the resource.
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*/
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public void setTintResource(int res) {
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setStatusBarTintResource(res);
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setNavigationBarTintResource(res);
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}
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/**
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* Apply the specified drawable to all system UI bars.
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*
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* @param drawable The drawable to use as the background, or null to remove it.
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*/
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public void setTintDrawable(Drawable drawable) {
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setStatusBarTintDrawable(drawable);
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setNavigationBarTintDrawable(drawable);
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}
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/**
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* Apply the specified alpha to all system UI bars.
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*
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* @param alpha The alpha to use
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*/
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public void setTintAlpha(float alpha) {
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setStatusBarAlpha(alpha);
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setNavigationBarAlpha(alpha);
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}
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/**
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* Apply the specified color tint to the system status bar.
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*
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* @param color The color of the background tint.
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*/
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public void setStatusBarTintColor(int color) {
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if (mStatusBarAvailable) {
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mStatusBarTintView.setBackgroundColor(color);
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}
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}
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/**
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* Apply the specified drawable or color resource to the system status bar.
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*
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* @param res The identifier of the resource.
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*/
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public void setStatusBarTintResource(int res) {
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if (mStatusBarAvailable) {
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mStatusBarTintView.setBackgroundResource(res);
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}
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}
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/**
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* Apply the specified drawable to the system status bar.
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*
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* @param drawable The drawable to use as the background, or null to remove it.
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*/
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@SuppressWarnings("deprecation")
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public void setStatusBarTintDrawable(Drawable drawable) {
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if (mStatusBarAvailable) {
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mStatusBarTintView.setBackgroundDrawable(drawable);
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}
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}
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/**
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* Apply the specified alpha to the system status bar.
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*
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* @param alpha The alpha to use
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*/
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@TargetApi(11)
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public void setStatusBarAlpha(float alpha) {
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if (mStatusBarAvailable
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&& Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
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mStatusBarTintView.setAlpha(alpha);
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}
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}
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/**
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* Apply the specified color tint to the system navigation bar.
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*
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* @param color The color of the background tint.
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*/
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public void setNavigationBarTintColor(int color) {
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if (mNavBarAvailable) {
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mNavBarTintView.setBackgroundColor(color);
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}
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}
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/**
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* Apply the specified drawable or color resource to the system navigation
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* bar.
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*
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* @param res The identifier of the resource.
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*/
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public void setNavigationBarTintResource(int res) {
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if (mNavBarAvailable) {
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mNavBarTintView.setBackgroundResource(res);
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}
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}
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/**
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* Apply the specified drawable to the system navigation bar.
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*
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* @param drawable The drawable to use as the background, or null to remove it.
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*/
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@SuppressWarnings("deprecation")
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public void setNavigationBarTintDrawable(Drawable drawable) {
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if (mNavBarAvailable) {
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mNavBarTintView.setBackgroundDrawable(drawable);
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}
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}
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/**
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* Apply the specified alpha to the system navigation bar.
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*
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* @param alpha The alpha to use
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*/
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@TargetApi(11)
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public void setNavigationBarAlpha(float alpha) {
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if (mNavBarAvailable
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&& Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
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mNavBarTintView.setAlpha(alpha);
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}
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}
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/**
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* Get the system bar configuration.
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*
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* @return The system bar configuration for the current device
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* configuration.
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*/
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public SystemBarConfig getConfig() {
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return mConfig;
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}
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/**
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* Is tinting enabled for the system status bar?
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*
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* @return True if enabled, False otherwise.
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*/
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public boolean isStatusBarTintEnabled() {
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return mStatusBarTintEnabled;
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}
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/**
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* Is tinting enabled for the system navigation bar?
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*
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* @return True if enabled, False otherwise.
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*/
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public boolean isNavBarTintEnabled() {
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return mNavBarTintEnabled;
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}
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private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {
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mStatusBarTintView = new View(context);
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LayoutParams params = new LayoutParams(
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android.view.ViewGroup.LayoutParams.MATCH_PARENT,
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mConfig.getStatusBarHeight());
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params.gravity = Gravity.TOP;
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if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {
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params.rightMargin = mConfig.getNavigationBarWidth();
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}
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mStatusBarTintView.setLayoutParams(params);
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mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
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mStatusBarTintView.setVisibility(View.GONE);
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decorViewGroup.addView(mStatusBarTintView);
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}
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private void setupNavBarView(Context context, ViewGroup decorViewGroup) {
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mNavBarTintView = new View(context);
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LayoutParams params;
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if (mConfig.isNavigationAtBottom()) {
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params = new LayoutParams(
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android.view.ViewGroup.LayoutParams.MATCH_PARENT,
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mConfig.getNavigationBarHeight());
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params.gravity = Gravity.BOTTOM;
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} else {
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params = new LayoutParams(mConfig.getNavigationBarWidth(),
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android.view.ViewGroup.LayoutParams.MATCH_PARENT);
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params.gravity = Gravity.RIGHT;
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}
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mNavBarTintView.setLayoutParams(params);
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mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
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mNavBarTintView.setVisibility(View.GONE);
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decorViewGroup.addView(mNavBarTintView);
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}
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/**
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* Class which describes system bar sizing and other characteristics for the
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* current device configuration.
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*/
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public static class SystemBarConfig {
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private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";
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private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";
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private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";
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private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";
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private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";
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private final boolean mTranslucentStatusBar;
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private final boolean mTranslucentNavBar;
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private final int mStatusBarHeight;
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private final int mActionBarHeight;
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private final boolean mHasNavigationBar;
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private final int mNavigationBarHeight;
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private final int mNavigationBarWidth;
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private final boolean mInPortrait;
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private final float mSmallestWidthDp;
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private SystemBarConfig(Activity activity,
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boolean translucentStatusBar, boolean traslucentNavBar) {
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Resources res = activity.getResources();
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mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);
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mSmallestWidthDp = getSmallestWidthDp(activity);
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mStatusBarHeight = getInternalDimensionSize(res,
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STATUS_BAR_HEIGHT_RES_NAME);
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mActionBarHeight = getActionBarHeight(activity);
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mNavigationBarHeight = getNavigationBarHeight(activity);
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mNavigationBarWidth = getNavigationBarWidth(activity);
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mHasNavigationBar = (mNavigationBarHeight > 0);
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mTranslucentStatusBar = translucentStatusBar;
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mTranslucentNavBar = traslucentNavBar;
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}
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@TargetApi(14)
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private int getActionBarHeight(Context context) {
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int result = 0;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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TypedValue tv = new TypedValue();
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context.getTheme().resolveAttribute(
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android.R.attr.actionBarSize, tv, true);
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result = TypedValue.complexToDimensionPixelSize(tv.data,
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context.getResources().getDisplayMetrics());
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}
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return result;
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}
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@TargetApi(14)
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private int getNavigationBarHeight(Context context) {
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Resources res = context.getResources();
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int result = 0;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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if (hasNavBar(context)) {
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String key;
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if (mInPortrait) {
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key = NAV_BAR_HEIGHT_RES_NAME;
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} else {
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key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;
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}
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return getInternalDimensionSize(res, key);
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}
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}
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return result;
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}
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@TargetApi(14)
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private int getNavigationBarWidth(Context context) {
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Resources res = context.getResources();
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int result = 0;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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if (hasNavBar(context)) {
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return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);
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}
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}
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return result;
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}
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@TargetApi(14)
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private boolean hasNavBar(Context context) {
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Resources res = context.getResources();
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int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool",
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"android");
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if (resourceId != 0) {
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boolean hasNav = res.getBoolean(resourceId);
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// check override flag (see static block)
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if ("1".equals(sNavBarOverride)) {
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hasNav = false;
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} else if ("0".equals(sNavBarOverride)) {
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hasNav = true;
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}
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return hasNav;
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} else { // fallback
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return !ViewConfiguration.get(context).hasPermanentMenuKey();
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}
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}
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private int getInternalDimensionSize(Resources res, String key) {
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int result = 0;
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int resourceId = res.getIdentifier(key, "dimen", "android");
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if (resourceId > 0) {
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result = res.getDimensionPixelSize(resourceId);
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}
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return result;
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}
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@SuppressLint("NewApi")
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private float getSmallestWidthDp(Activity activity) {
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DisplayMetrics metrics = new DisplayMetrics();
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
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activity.getWindowManager().getDefaultDisplay()
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.getRealMetrics(metrics);
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} else {
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// TODO this is not correct, but we don't really care pre-kitkat
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activity.getWindowManager().getDefaultDisplay()
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.getMetrics(metrics);
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}
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float widthDp = metrics.widthPixels / metrics.density;
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float heightDp = metrics.heightPixels / metrics.density;
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return Math.min(widthDp, heightDp);
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}
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/**
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* Should a navigation bar appear at the bottom of the screen in the
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* current device configuration? A navigation bar may appear on the
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* right side of the screen in certain configurations.
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*
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* @return True if navigation should appear at the bottom of the screen,
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* False otherwise.
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*/
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public boolean isNavigationAtBottom() {
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return (mSmallestWidthDp >= 600 || mInPortrait);
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}
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/**
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* Get the height of the system status bar.
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*
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* @return The height of the status bar (in pixels).
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*/
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public int getStatusBarHeight() {
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return mStatusBarHeight;
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}
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/**
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* Get the height of the action bar.
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*
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* @return The height of the action bar (in pixels).
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*/
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public int getActionBarHeight() {
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return mActionBarHeight;
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}
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/**
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* Does this device have a system navigation bar?
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*
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* @return True if this device uses soft key navigation, False
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* otherwise.
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*/
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public boolean hasNavigtionBar() {
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return mHasNavigationBar;
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}
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/**
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* Get the height of the system navigation bar.
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*
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* @return The height of the navigation bar (in pixels). If the device
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* does not have soft navigation keys, this will always return
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* 0.
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*/
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public int getNavigationBarHeight() {
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return mNavigationBarHeight;
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}
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/**
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* Get the width of the system navigation bar when it is placed
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* vertically on the screen.
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*
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* @return The width of the navigation bar (in pixels). If the device
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* does not have soft navigation keys, this will always return
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* 0.
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*/
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public int getNavigationBarWidth() {
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return mNavigationBarWidth;
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}
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/**
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* Get the layout inset for any system UI that appears at the top of the
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* screen.
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*
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* @param withActionBar True to include the height of the action bar, False
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* otherwise.
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* @return The layout inset (in pixels).
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*/
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public int getPixelInsetTop(boolean withActionBar) {
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return (mTranslucentStatusBar ? mStatusBarHeight : 0)
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+ (withActionBar ? mActionBarHeight : 0);
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}
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/**
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* Get the layout inset for any system UI that appears at the bottom of
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* the screen.
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*
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* @return The layout inset (in pixels).
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*/
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public int getPixelInsetBottom() {
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if (mTranslucentNavBar && isNavigationAtBottom()) {
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return mNavigationBarHeight;
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} else {
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return 0;
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}
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}
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/**
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* Get the layout inset for any system UI that appears at the right of
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* the screen.
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*
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* @return The layout inset (in pixels).
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*/
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public int getPixelInsetRight() {
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if (mTranslucentNavBar && !isNavigationAtBottom()) {
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return mNavigationBarWidth;
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} else {
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return 0;
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}
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}
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}
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}
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