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