| /* |
| * 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.systemui.volume; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.util.ArrayMap; |
| import android.util.TypedValue; |
| import android.view.View; |
| import android.view.View.OnAttachStateChangeListener; |
| import android.widget.TextView; |
| |
| /** |
| * Class for updating textviews on configuration change. |
| */ |
| public class ConfigurableTexts { |
| |
| private final Context mContext; |
| private final ArrayMap<TextView, Integer> mTexts = new ArrayMap<>(); |
| private final ArrayMap<TextView, Integer> mTextLabels = new ArrayMap<>(); |
| |
| public ConfigurableTexts(Context context) { |
| mContext = context; |
| } |
| |
| public int add(final TextView text) { |
| return add(text, -1); |
| } |
| |
| public int add(final TextView text, final int labelResId) { |
| if (text == null) return 0; |
| final Resources res = mContext.getResources(); |
| final float fontScale = res.getConfiguration().fontScale; |
| final float density = res.getDisplayMetrics().density; |
| final float px = text.getTextSize(); |
| final int sp = (int)(px / fontScale / density); |
| mTexts.put(text, sp); |
| text.addOnAttachStateChangeListener(new OnAttachStateChangeListener() { |
| @Override |
| public void onViewDetachedFromWindow(View v) { |
| } |
| |
| @Override |
| public void onViewAttachedToWindow(View v) { |
| setTextSizeH(text, sp); |
| } |
| }); |
| mTextLabels.put(text, labelResId); |
| return sp; |
| } |
| |
| public void update() { |
| if (mTexts.isEmpty()) return; |
| mTexts.keyAt(0).post(mUpdateAll); |
| } |
| |
| private void setTextSizeH(TextView text, int sp) { |
| text.setTextSize(TypedValue.COMPLEX_UNIT_SP, sp); |
| } |
| |
| private void setTextLabelH(TextView text, int labelResId) { |
| try { |
| if (labelResId >= 0) { |
| Util.setText(text, mContext.getString(labelResId)); |
| } |
| } catch (Resources.NotFoundException e) { |
| // oh well. |
| } |
| } |
| |
| private final Runnable mUpdateAll = new Runnable() { |
| @Override |
| public void run() { |
| for (int i = 0; i < mTexts.size(); i++) { |
| setTextSizeH(mTexts.keyAt(i), mTexts.valueAt(i)); |
| } |
| for (int i = 0; i < mTextLabels.size(); i++) { |
| setTextLabelH(mTextLabels.keyAt(i), mTextLabels.valueAt(i)); |
| } |
| } |
| }; |
| } |