93 lines
2.6 KiB
Java
93 lines
2.6 KiB
Java
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/*
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* Copyright (C) 2014 The Android Open Source Project
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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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package android.support.v7.internal.widget;
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/**
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* RtlSpacingHelper manages the relationship between left/right and start/end for views
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* that need to maintain both absolute and relative settings for a form of spacing similar
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* to view padding.
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*
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* @hide
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*/
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public class RtlSpacingHelper {
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public static final int UNDEFINED = Integer.MIN_VALUE;
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private int mLeft = 0;
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private int mRight = 0;
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private int mStart = UNDEFINED;
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private int mEnd = UNDEFINED;
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private int mExplicitLeft = 0;
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private int mExplicitRight = 0;
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private boolean mIsRtl = false;
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private boolean mIsRelative = false;
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public int getLeft() {
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return mLeft;
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}
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public int getRight() {
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return mRight;
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}
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public int getStart() {
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return mIsRtl ? mRight : mLeft;
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}
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public int getEnd() {
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return mIsRtl ? mLeft : mRight;
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}
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public void setRelative(int start, int end) {
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mStart = start;
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mEnd = end;
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mIsRelative = true;
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if (mIsRtl) {
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if (end != UNDEFINED) mLeft = end;
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if (start != UNDEFINED) mRight = start;
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} else {
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if (start != UNDEFINED) mLeft = start;
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if (end != UNDEFINED) mRight = end;
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}
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}
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public void setAbsolute(int left, int right) {
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mIsRelative = false;
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if (left != UNDEFINED) mLeft = mExplicitLeft = left;
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if (right != UNDEFINED) mRight = mExplicitRight = right;
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}
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public void setDirection(boolean isRtl) {
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if (isRtl == mIsRtl) {
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return;
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}
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mIsRtl = isRtl;
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if (mIsRelative) {
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if (isRtl) {
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mLeft = mEnd != UNDEFINED ? mEnd : mExplicitLeft;
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mRight = mStart != UNDEFINED ? mStart : mExplicitRight;
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} else {
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mLeft = mStart != UNDEFINED ? mStart : mExplicitLeft;
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mRight = mEnd != UNDEFINED ? mEnd : mExplicitRight;
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}
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} else {
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mLeft = mExplicitLeft;
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mRight = mExplicitRight;
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}
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}
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}
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