Merge "Make Navbar Back Button UI Consistent with SysUI" into main

<?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.

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

    android:width="28dp"

    android:height="28dp"

    android:autoMirrored="true"

    android:viewportWidth="28"

    android:viewportHeight="28">

    <path

        android:pathData="M16.78,10.03l-3.97,3.97l3.97,3.97l-1.06,1.06l-5.03,-5.03l5.03,-5.03z"

        android:fillColor="?attr/singleToneColor" />

</vector>

 No newline at end of file

    }

    public KeyButtonDrawable getBackDrawable() {

        KeyButtonDrawable drawable = getDrawable(getBackDrawableRes());

        KeyButtonDrawable drawable = getDrawable(R.drawable.ic_sysbar_back);

        orientBackButton(drawable);

        return drawable;

    }

    public @DrawableRes int getBackDrawableRes() {

        return chooseNavigationIconDrawableRes(R.drawable.ic_sysbar_back,

                R.drawable.ic_sysbar_back_quick_step);

    }

    public KeyButtonDrawable getHomeDrawable() {

        KeyButtonDrawable drawable = mShowSwipeUpUi

                ? getDrawable(R.drawable.ic_sysbar_home_quick_step)

        drawable.setRotation(mIsVertical ? 90 : 0);

    }

    private @DrawableRes int chooseNavigationIconDrawableRes(@DrawableRes int icon,

            @DrawableRes int quickStepIcon) {

        return mShowSwipeUpUi ? quickStepIcon : icon;

    }

    private KeyButtonDrawable getDrawable(@DrawableRes int icon) {

        return KeyButtonDrawable.create(mLightContext, mLightIconColor, mDarkIconColor, icon,

                true /* hasShadow */, null /* ovalBackgroundColor */);