| /* |
| * Copyright (C) 2015 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 com.android.tv.tuner.cc; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| |
| import com.android.tv.tuner.data.Track.AtscCaptionTrack; |
| import com.android.tv.tuner.layout.ScaledLayout; |
| |
| /** |
| * Layout containing the safe title area that helps the closed captions look more prominent. |
| * This is required by CEA-708B. |
| */ |
| public class CaptionLayout extends ScaledLayout { |
| // The safe title area has 10% margins of the screen. |
| private static final float SAFE_TITLE_AREA_SCALE_START_X = 0.1f; |
| private static final float SAFE_TITLE_AREA_SCALE_END_X = 0.9f; |
| private static final float SAFE_TITLE_AREA_SCALE_START_Y = 0.1f; |
| private static final float SAFE_TITLE_AREA_SCALE_END_Y = 0.9f; |
| |
| private final ScaledLayout mSafeTitleAreaLayout; |
| private AtscCaptionTrack mCaptionTrack; |
| |
| public CaptionLayout(Context context) { |
| this(context, null); |
| } |
| |
| public CaptionLayout(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public CaptionLayout(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| mSafeTitleAreaLayout = new ScaledLayout(context); |
| addView(mSafeTitleAreaLayout, new ScaledLayoutParams( |
| SAFE_TITLE_AREA_SCALE_START_X, SAFE_TITLE_AREA_SCALE_END_X, |
| SAFE_TITLE_AREA_SCALE_START_Y, SAFE_TITLE_AREA_SCALE_END_Y)); |
| } |
| |
| public void addOrUpdateViewToSafeTitleArea(CaptionWindowLayout captionWindowLayout, |
| ScaledLayoutParams scaledLayoutParams) { |
| int index = mSafeTitleAreaLayout.indexOfChild(captionWindowLayout); |
| if (index < 0) { |
| mSafeTitleAreaLayout.addView(captionWindowLayout, scaledLayoutParams); |
| return; |
| } |
| mSafeTitleAreaLayout.updateViewLayout(captionWindowLayout, scaledLayoutParams); |
| } |
| |
| public void removeViewFromSafeTitleArea(CaptionWindowLayout captionWindowLayout) { |
| mSafeTitleAreaLayout.removeView(captionWindowLayout); |
| } |
| |
| public void setCaptionTrack(AtscCaptionTrack captionTrack) { |
| mCaptionTrack = captionTrack; |
| } |
| |
| public AtscCaptionTrack getCaptionTrack() { |
| return mCaptionTrack; |
| } |
| } |