| /* |
| * Copyright (C) 2017 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.server.autofill.ui; |
| |
| import static com.android.server.autofill.Helper.sDebug; |
| |
| import android.content.Context; |
| import android.graphics.Point; |
| import android.util.AttributeSet; |
| import android.util.Slog; |
| import android.util.TypedValue; |
| import android.view.View; |
| import android.widget.ScrollView; |
| |
| import com.android.internal.R; |
| |
| /** |
| * Custom scroll view that stretches to a maximum height. |
| */ |
| public class CustomScrollView extends ScrollView { |
| |
| private static final String TAG = "CustomScrollView"; |
| |
| private int mWidth = -1; |
| private int mHeight = -1; |
| |
| public CustomScrollView(Context context) { |
| super(context); |
| } |
| |
| public CustomScrollView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public CustomScrollView(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| } |
| |
| public CustomScrollView(Context context, AttributeSet attrs, int defStyleAttr, |
| int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| |
| if (getChildCount() == 0) { |
| // Should not happen |
| Slog.e(TAG, "no children"); |
| return; |
| } |
| |
| mWidth = MeasureSpec.getSize(widthMeasureSpec); |
| calculateDimensions(); |
| setMeasuredDimension(mWidth, mHeight); |
| } |
| |
| private void calculateDimensions() { |
| if (mHeight != -1) return; |
| |
| final TypedValue typedValue = new TypedValue(); |
| final Point point = new Point(); |
| final Context context = getContext(); |
| context.getDisplay().getSize(point); |
| context.getTheme().resolveAttribute(R.attr.autofillSaveCustomSubtitleMaxHeight, |
| typedValue, true); |
| final View child = getChildAt(0); |
| final int childHeight = child.getMeasuredHeight(); |
| final int maxHeight = (int) typedValue.getFraction(point.y, point.y); |
| |
| mHeight = Math.min(childHeight, maxHeight); |
| if (sDebug) { |
| Slog.d(TAG, "calculateDimensions(): maxHeight=" + maxHeight |
| + ", childHeight=" + childHeight + ", w=" + mWidth + ", h=" + mHeight); |
| } |
| } |
| } |