1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.setupwizardlib.util; 18 19 import android.annotation.SuppressLint; 20 import android.content.Context; 21 import android.graphics.drawable.Drawable; 22 import android.graphics.drawable.InsetDrawable; 23 import android.os.Build; 24 import android.view.View; 25 26 /** 27 * Provides convenience methods to handle drawable layout directions in different SDK versions. 28 */ 29 public class DrawableLayoutDirectionHelper { 30 31 /** 32 * Creates an {@link android.graphics.drawable.InsetDrawable} according to the layout direction 33 * of {@code view}. 34 */ 35 @SuppressLint("InlinedApi") // Use of View.LAYOUT_DIRECTION_RTL is guarded by version check 36 public static InsetDrawable createRelativeInsetDrawable(Drawable drawable, 37 int insetStart, int insetTop, int insetEnd, int insetBottom, View view) { 38 boolean isRtl = Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 39 && view.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL; 40 return createRelativeInsetDrawable(drawable, insetStart, insetTop, insetEnd, insetBottom, 41 isRtl); 42 } 43 44 /** 45 * Creates an {@link android.graphics.drawable.InsetDrawable} according to the layout direction 46 * of {@code context}. 47 */ 48 @SuppressLint("InlinedApi") // Use of View.LAYOUT_DIRECTION_RTL is guarded by version check 49 public static InsetDrawable createRelativeInsetDrawable(Drawable drawable, 50 int insetStart, int insetTop, int insetEnd, int insetBottom, Context context) { 51 boolean isRtl = false; 52 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { 53 final int layoutDirection = 54 context.getResources().getConfiguration().getLayoutDirection(); 55 isRtl = layoutDirection == View.LAYOUT_DIRECTION_RTL; 56 } 57 return createRelativeInsetDrawable(drawable, insetStart, insetTop, insetEnd, insetBottom, 58 isRtl); 59 } 60 61 /** 62 * Creates an {@link android.graphics.drawable.InsetDrawable} according to 63 * {@code layoutDirection}. 64 */ 65 @SuppressLint("InlinedApi") // Given layoutDirection will not be View.LAYOUT_DIRECTION_RTL if 66 // SDK version doesn't support it. 67 public static InsetDrawable createRelativeInsetDrawable(Drawable drawable, 68 int insetStart, int insetTop, int insetEnd, int insetBottom, int layoutDirection) { 69 return createRelativeInsetDrawable(drawable, insetStart, insetTop, insetEnd, insetBottom, 70 layoutDirection == View.LAYOUT_DIRECTION_RTL); 71 } 72 73 private static InsetDrawable createRelativeInsetDrawable(Drawable drawable, 74 int insetStart, int insetTop, int insetEnd, int insetBottom, boolean isRtl) { 75 if (isRtl) { 76 return new InsetDrawable(drawable, insetEnd, insetTop, insetStart, insetBottom); 77 } else { 78 return new InsetDrawable(drawable, insetStart, insetTop, insetEnd, insetBottom); 79 } 80 } 81 } 82
