Home | History | Annotate | Download | only in utils 
      1 /**
      2  * Copyright (c) 2013, Google Inc.
      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.mail.utils;
     18 
     19 import android.annotation.SuppressLint;
     20 import android.support.v4.view.ViewCompat;
     21 import android.view.View;
     22 
     23 /**
     24  * Utility class to perform some common operations on views.
     25  */
     26 public class ViewUtils {
     27 
     28     /**
     29      * Determines whether the given view has RTL layout. NOTE: do not call this
     30      * on a view until it has been measured. This value is not guaranteed to be
     31      * accurate until then.
     32      */
     33     public static boolean isViewRtl(View view) {
     34         return ViewCompat.getLayoutDirection(view) == ViewCompat.LAYOUT_DIRECTION_RTL;
     35     }
     36 
     37     /**
     38      * @return the start padding of the view. Prior to API 17, will return the left padding.
     39      */
     40     @SuppressLint("NewApi")
     41     public static int getPaddingStart(View view) {
     42         return Utils.isRunningJBMR1OrLater() ? view.getPaddingStart() : view.getPaddingLeft();
     43     }
     44 
     45     /**
     46      * @return the end padding of the view. Prior to API 17, will return the right padding.
     47      */
     48     @SuppressLint("NewApi")
     49     public static int getPaddingEnd(View view) {
     50         return Utils.isRunningJBMR1OrLater() ? view.getPaddingEnd() : view.getPaddingRight();
     51     }
     52 
     53     /**
     54      * Sets the text alignment of the view. Prior to API 17, will no-op.
     55      */
     56     @SuppressLint("NewApi")
     57     public static void setTextAlignment(View view, int textAlignment) {
     58         if (Utils.isRunningJBMR1OrLater()) {
     59             view.setTextAlignment(textAlignment);
     60         }
     61     }
     62 }
     63