Filipe Gonçalves | 09156c6 | 2016-05-31 13:47:09 +0100 | [diff] [blame] | 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.musicfx; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.util.AttributeSet; |
| 21 | import android.util.Log; |
| 22 | import android.view.View; |
| 23 | import android.view.ViewGroup; |
| 24 | |
| 25 | |
| 26 | /* |
| 27 | * This ViewGroup contains a single view, which will be rotated by 90 degrees counterclockwise. |
| 28 | */ |
| 29 | |
| 30 | public class SeekBarRotator extends ViewGroup { |
| 31 | |
| 32 | |
| 33 | public SeekBarRotator(Context context) { |
| 34 | super(context); |
| 35 | } |
| 36 | |
| 37 | public SeekBarRotator(Context context, AttributeSet attrs) { |
| 38 | super(context, attrs); |
| 39 | } |
| 40 | |
| 41 | public SeekBarRotator(Context context, AttributeSet attrs, int defStyleAttr) { |
| 42 | super(context, attrs, defStyleAttr); |
| 43 | } |
| 44 | |
| 45 | public SeekBarRotator(Context context, AttributeSet attrs, int defStyleAttr, |
| 46 | int defStyleRes) { |
| 47 | super(context, attrs, defStyleAttr, defStyleRes); |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 52 | final View child = getChildAt(0); |
| 53 | |
| 54 | if (child.getVisibility() != GONE) { |
| 55 | // swap width and height for child |
| 56 | measureChild(child, heightMeasureSpec, widthMeasureSpec); |
| 57 | setMeasuredDimension( |
| 58 | child.getMeasuredHeightAndState(), |
| 59 | child.getMeasuredWidthAndState()); |
| 60 | } else { |
| 61 | setMeasuredDimension( |
| 62 | resolveSizeAndState(0, widthMeasureSpec, 0), |
| 63 | resolveSizeAndState(0, heightMeasureSpec, 0)); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | protected void onLayout(boolean changed, int l, int t, int r, int b) { |
| 69 | final View child = getChildAt(0); |
| 70 | |
| 71 | if (child.getVisibility() != GONE) { |
| 72 | // rotate the child 90 degrees counterclockwise around its upper-left |
| 73 | child.setPivotX(0); |
| 74 | child.setPivotY(0); |
| 75 | child.setRotation(-90); |
| 76 | |
| 77 | // place the child below this view, so it rotates into view |
| 78 | int mywidth = r - l; |
| 79 | int myheight = b - t; |
| 80 | int childwidth = myheight; |
| 81 | int childheight = mywidth; |
| 82 | |
| 83 | child.layout(0, myheight, childwidth, myheight + childheight); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | } |