1 /* 2 * Copyright (C) 2014 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 androidx.appcompat.widget; 18 19 import android.content.Context; 20 import android.graphics.Canvas; 21 import android.util.AttributeSet; 22 import android.widget.SeekBar; 23 24 import androidx.appcompat.R; 25 26 /** 27 * A {@link SeekBar} which supports compatible features on older versions of the platform. 28 * 29 * <p>This will automatically be used when you use {@link SeekBar} in your layouts 30 * and the top-level activity / dialog is provided by 31 * <a href="{@docRoot}topic/libraries/support-library/packages.html#v7-appcompat">appcompat</a>. 32 * You should only need to manually use this class when writing custom views.</p> 33 */ 34 public class AppCompatSeekBar extends SeekBar { 35 36 private final AppCompatSeekBarHelper mAppCompatSeekBarHelper; 37 AppCompatSeekBar(Context context)38 public AppCompatSeekBar(Context context) { 39 this(context, null); 40 } 41 AppCompatSeekBar(Context context, AttributeSet attrs)42 public AppCompatSeekBar(Context context, AttributeSet attrs) { 43 this(context, attrs, R.attr.seekBarStyle); 44 } 45 AppCompatSeekBar(Context context, AttributeSet attrs, int defStyleAttr)46 public AppCompatSeekBar(Context context, AttributeSet attrs, int defStyleAttr) { 47 super(context, attrs, defStyleAttr); 48 49 mAppCompatSeekBarHelper = new AppCompatSeekBarHelper(this); 50 mAppCompatSeekBarHelper.loadFromAttributes(attrs, defStyleAttr); 51 } 52 53 @Override onDraw(Canvas canvas)54 protected synchronized void onDraw(Canvas canvas) { 55 super.onDraw(canvas); 56 mAppCompatSeekBarHelper.drawTickMarks(canvas); 57 } 58 59 @Override drawableStateChanged()60 protected void drawableStateChanged() { 61 super.drawableStateChanged(); 62 mAppCompatSeekBarHelper.drawableStateChanged(); 63 } 64 65 @Override jumpDrawablesToCurrentState()66 public void jumpDrawablesToCurrentState() { 67 super.jumpDrawablesToCurrentState(); 68 mAppCompatSeekBarHelper.jumpDrawablesToCurrentState(); 69 } 70 } 71