1b599e0232
This reverts commit c9ca4a9014.
Reason for revert: Black Search Box in Settings App (Light Theme)
Change-Id: I936e977ce044b8da41d818d6b3392adc6fd1e4e6
669 lines
28 KiB
Java
669 lines
28 KiB
Java
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.fuelgauge.batteryusage;
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import static com.android.settings.Utils.formatPercentage;
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import static java.lang.Math.round;
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import static java.util.Objects.requireNonNull;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.CornerPathEffect;
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import android.graphics.Paint;
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import android.graphics.Path;
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import android.graphics.Rect;
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import android.os.Bundle;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.HapticFeedbackConstants;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewParent;
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import android.view.accessibility.AccessibilityEvent;
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import android.view.accessibility.AccessibilityManager;
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import android.view.accessibility.AccessibilityNodeInfo;
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import android.view.accessibility.AccessibilityNodeProvider;
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import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.VisibleForTesting;
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import androidx.appcompat.widget.AppCompatImageView;
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import com.android.settings.R;
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import com.android.settingslib.Utils;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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/** A widget component to draw chart graph. */
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public class BatteryChartView extends AppCompatImageView implements View.OnClickListener {
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private static final String TAG = "BatteryChartView";
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private static final int DIVIDER_COLOR = Color.parseColor("#CDCCC5");
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private static final long UPDATE_STATE_DELAYED_TIME = 500L;
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/** A callback listener for selected group index is updated. */
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public interface OnSelectListener {
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/** The callback function for selected group index is updated. */
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void onSelect(int trapezoidIndex);
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}
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private final String[] mPercentages = getPercentages();
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private final Rect mIndent = new Rect();
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private final Rect[] mPercentageBounds = new Rect[]{new Rect(), new Rect(), new Rect()};
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private final List<Rect> mAxisLabelsBounds = new ArrayList<>();
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private BatteryChartViewModel mViewModel;
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private int mHoveredIndex = BatteryChartViewModel.SELECTED_INDEX_INVALID;
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private int mDividerWidth;
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private int mDividerHeight;
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private float mTrapezoidVOffset;
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private float mTrapezoidHOffset;
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private int mTrapezoidColor;
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private int mTrapezoidSolidColor;
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private int mTrapezoidHoverColor;
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private int mTextPadding;
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private Paint mDividerPaint;
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private Paint mTrapezoidPaint;
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private Paint mTextPaint;
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private AccessibilityNodeProvider mAccessibilityNodeProvider;
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private BatteryChartView.OnSelectListener mOnSelectListener;
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@VisibleForTesting
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TrapezoidSlot[] mTrapezoidSlots;
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// Records the location to calculate selected index.
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@VisibleForTesting
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float mTouchUpEventX = Float.MIN_VALUE;
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public BatteryChartView(Context context) {
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super(context, null);
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}
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public BatteryChartView(Context context, AttributeSet attrs) {
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super(context, attrs);
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initializeColors(context);
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// Registers the click event listener.
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setOnClickListener(this);
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setClickable(false);
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requestLayout();
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}
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/** Sets the data model of this view. */
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public void setViewModel(BatteryChartViewModel viewModel) {
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if (viewModel == null) {
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mViewModel = null;
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invalidate();
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return;
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}
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Log.d(TAG, String.format("setViewModel(): size: %d, selectedIndex: %d.",
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viewModel.size(), viewModel.selectedIndex()));
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mViewModel = viewModel;
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initializeAxisLabelsBounds();
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initializeTrapezoidSlots(viewModel.size() - 1);
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setClickable(hasAnyValidTrapezoid(viewModel));
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requestLayout();
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}
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/** Sets the callback to monitor the selected group index. */
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public void setOnSelectListener(BatteryChartView.OnSelectListener listener) {
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mOnSelectListener = listener;
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}
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/** Sets the companion {@link TextView} for percentage information. */
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public void setCompanionTextView(TextView textView) {
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if (textView != null) {
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// Pre-draws the view first to load style atttributions into paint.
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textView.draw(new Canvas());
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mTextPaint = textView.getPaint();
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} else {
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mTextPaint = null;
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}
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requestLayout();
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}
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@Override
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public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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// Measures text bounds and updates indent configuration.
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if (mTextPaint != null) {
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mTextPaint.setTextAlign(Paint.Align.LEFT);
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for (int index = 0; index < mPercentages.length; index++) {
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mTextPaint.getTextBounds(
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mPercentages[index], 0, mPercentages[index].length(),
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mPercentageBounds[index]);
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}
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// Updates the indent configurations.
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mIndent.top = mPercentageBounds[0].height();
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mIndent.right = mPercentageBounds[0].width() + mTextPadding;
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if (mViewModel != null) {
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int maxTop = 0;
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for (int index = 0; index < mViewModel.size(); index++) {
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final String text = mViewModel.getText(index);
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mTextPaint.getTextBounds(text, 0, text.length(), mAxisLabelsBounds.get(index));
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maxTop = Math.max(maxTop, -mAxisLabelsBounds.get(index).top);
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}
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mIndent.bottom = maxTop + round(mTextPadding * 2f);
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}
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Log.d(TAG, "setIndent:" + mPercentageBounds[0]);
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} else {
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mIndent.set(0, 0, 0, 0);
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}
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}
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@Override
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public void draw(Canvas canvas) {
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super.draw(canvas);
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// Before mLevels initialized, the count of trapezoids is unknown. Only draws the
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// horizontal percentages and dividers.
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drawHorizontalDividers(canvas);
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if (mViewModel == null) {
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return;
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}
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drawVerticalDividers(canvas);
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drawTrapezoids(canvas);
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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// Caches the location to calculate selected trapezoid index.
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final int action = event.getAction();
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switch (action) {
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case MotionEvent.ACTION_UP:
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mTouchUpEventX = event.getX();
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break;
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case MotionEvent.ACTION_CANCEL:
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mTouchUpEventX = Float.MIN_VALUE; // reset
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break;
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}
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return super.onTouchEvent(event);
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}
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@Override
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public boolean onHoverEvent(MotionEvent event) {
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final int action = event.getAction();
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switch (action) {
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case MotionEvent.ACTION_HOVER_ENTER:
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case MotionEvent.ACTION_HOVER_MOVE:
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final int trapezoidIndex = getTrapezoidIndex(event.getX());
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if (mHoveredIndex != trapezoidIndex) {
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mHoveredIndex = trapezoidIndex;
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invalidate();
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sendAccessibilityEventForHover(AccessibilityEvent.TYPE_VIEW_HOVER_ENTER);
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}
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// Ignore the super.onHoverEvent() because the hovered trapezoid has already been
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// sent here.
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return true;
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case MotionEvent.ACTION_HOVER_EXIT:
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if (mHoveredIndex != BatteryChartViewModel.SELECTED_INDEX_INVALID) {
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sendAccessibilityEventForHover(AccessibilityEvent.TYPE_VIEW_HOVER_EXIT);
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mHoveredIndex = BatteryChartViewModel.SELECTED_INDEX_INVALID; // reset
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invalidate();
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}
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// Ignore the super.onHoverEvent() because the hovered trapezoid has already been
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// sent here.
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return true;
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default:
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return super.onTouchEvent(event);
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}
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}
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@Override
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public void onHoverChanged(boolean hovered) {
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super.onHoverChanged(hovered);
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if (!hovered) {
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mHoveredIndex = BatteryChartViewModel.SELECTED_INDEX_INVALID; // reset
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invalidate();
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}
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}
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@Override
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public void onClick(View view) {
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if (mTouchUpEventX == Float.MIN_VALUE) {
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Log.w(TAG, "invalid motion event for onClick() callback");
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return;
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}
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onTrapezoidClicked(view, getTrapezoidIndex(mTouchUpEventX));
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}
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@Override
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public AccessibilityNodeProvider getAccessibilityNodeProvider() {
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if (mViewModel == null) {
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return super.getAccessibilityNodeProvider();
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}
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if (mAccessibilityNodeProvider == null) {
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mAccessibilityNodeProvider = new BatteryChartAccessibilityNodeProvider();
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}
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return mAccessibilityNodeProvider;
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}
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private void onTrapezoidClicked(View view, int index) {
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// Ignores the click event if the level is zero.
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if (!isValidToDraw(mViewModel, index)) {
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return;
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}
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if (mOnSelectListener != null) {
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// Selects all if users click the same trapezoid item two times.
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mOnSelectListener.onSelect(
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index == mViewModel.selectedIndex()
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? BatteryChartViewModel.SELECTED_INDEX_ALL : index);
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}
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view.performHapticFeedback(HapticFeedbackConstants.CONTEXT_CLICK);
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}
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private boolean sendAccessibilityEvent(int virtualDescendantId, int eventType) {
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ViewParent parent = getParent();
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if (parent == null || !AccessibilityManager.getInstance(mContext).isEnabled()) {
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return false;
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}
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AccessibilityEvent accessibilityEvent = new AccessibilityEvent(eventType);
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accessibilityEvent.setSource(this, virtualDescendantId);
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accessibilityEvent.setEnabled(true);
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accessibilityEvent.setClassName(getAccessibilityClassName());
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accessibilityEvent.setPackageName(getContext().getPackageName());
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return parent.requestSendAccessibilityEvent(this, accessibilityEvent);
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}
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private void sendAccessibilityEventForHover(int eventType) {
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if (isTrapezoidIndexValid(mViewModel, mHoveredIndex)) {
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sendAccessibilityEvent(mHoveredIndex, eventType);
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}
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}
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private void initializeTrapezoidSlots(int count) {
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mTrapezoidSlots = new TrapezoidSlot[count];
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for (int index = 0; index < mTrapezoidSlots.length; index++) {
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mTrapezoidSlots[index] = new TrapezoidSlot();
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}
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}
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private void initializeColors(Context context) {
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setBackgroundColor(Color.TRANSPARENT);
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mTrapezoidSolidColor = Utils.getColorAccentDefaultColor(context);
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mTrapezoidColor = Utils.getDisabled(context, mTrapezoidSolidColor);
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mTrapezoidHoverColor = Utils.getColorAttrDefaultColor(context,
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com.android.internal.R.attr.colorAccentSecondaryVariant);
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// Initializes the divider line paint.
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final Resources resources = getContext().getResources();
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mDividerWidth = resources.getDimensionPixelSize(R.dimen.chartview_divider_width);
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mDividerHeight = resources.getDimensionPixelSize(R.dimen.chartview_divider_height);
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mDividerPaint = new Paint();
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mDividerPaint.setAntiAlias(true);
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mDividerPaint.setColor(DIVIDER_COLOR);
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mDividerPaint.setStyle(Paint.Style.STROKE);
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mDividerPaint.setStrokeWidth(mDividerWidth);
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Log.i(TAG, "mDividerWidth:" + mDividerWidth);
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Log.i(TAG, "mDividerHeight:" + mDividerHeight);
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// Initializes the trapezoid paint.
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mTrapezoidHOffset = resources.getDimension(R.dimen.chartview_trapezoid_margin_start);
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mTrapezoidVOffset = resources.getDimension(R.dimen.chartview_trapezoid_margin_bottom);
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mTrapezoidPaint = new Paint();
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mTrapezoidPaint.setAntiAlias(true);
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mTrapezoidPaint.setColor(mTrapezoidSolidColor);
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mTrapezoidPaint.setStyle(Paint.Style.FILL);
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mTrapezoidPaint.setPathEffect(
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new CornerPathEffect(
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resources.getDimensionPixelSize(R.dimen.chartview_trapezoid_radius)));
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// Initializes for drawing text information.
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mTextPadding = resources.getDimensionPixelSize(R.dimen.chartview_text_padding);
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}
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private void drawHorizontalDividers(Canvas canvas) {
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final int width = getWidth() - mIndent.right;
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final int height = getHeight() - mIndent.top - mIndent.bottom;
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// Draws the top divider line for 100% curve.
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float offsetY = mIndent.top + mDividerWidth * .5f;
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canvas.drawLine(0, offsetY, width, offsetY, mDividerPaint);
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drawPercentage(canvas, /*index=*/ 0, offsetY);
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// Draws the center divider line for 50% curve.
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final float availableSpace =
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height - mDividerWidth * 2 - mTrapezoidVOffset - mDividerHeight;
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offsetY = mIndent.top + mDividerWidth + availableSpace * .5f;
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canvas.drawLine(0, offsetY, width, offsetY, mDividerPaint);
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drawPercentage(canvas, /*index=*/ 1, offsetY);
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// Draws the bottom divider line for 0% curve.
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offsetY = mIndent.top + (height - mDividerHeight - mDividerWidth * .5f);
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canvas.drawLine(0, offsetY, width, offsetY, mDividerPaint);
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drawPercentage(canvas, /*index=*/ 2, offsetY);
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}
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private void drawPercentage(Canvas canvas, int index, float offsetY) {
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if (mTextPaint != null) {
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mTextPaint.setTextAlign(Paint.Align.RIGHT);
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canvas.drawText(
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mPercentages[index],
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getWidth(),
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offsetY + mPercentageBounds[index].height() * .5f,
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mTextPaint);
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}
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}
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private void drawVerticalDividers(Canvas canvas) {
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final int width = getWidth() - mIndent.right;
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final int dividerCount = mTrapezoidSlots.length + 1;
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final float dividerSpace = dividerCount * mDividerWidth;
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final float unitWidth = (width - dividerSpace) / (float) mTrapezoidSlots.length;
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final float bottomY = getHeight() - mIndent.bottom;
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final float startY = bottomY - mDividerHeight;
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final float trapezoidSlotOffset = mTrapezoidHOffset + mDividerWidth * .5f;
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// Draws each vertical dividers.
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float startX = mDividerWidth * .5f;
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for (int index = 0; index < dividerCount; index++) {
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canvas.drawLine(startX, startY, startX, bottomY, mDividerPaint);
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final float nextX = startX + mDividerWidth + unitWidth;
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// Updates the trapezoid slots for drawing.
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if (index < mTrapezoidSlots.length) {
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mTrapezoidSlots[index].mLeft = round(startX + trapezoidSlotOffset);
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mTrapezoidSlots[index].mRight = round(nextX - trapezoidSlotOffset);
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}
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startX = nextX;
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}
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// Draws the axis label slot information.
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if (mViewModel != null) {
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final float baselineY = getHeight() - mTextPadding;
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Rect[] axisLabelDisplayAreas;
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switch (mViewModel.axisLabelPosition()) {
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case CENTER_OF_TRAPEZOIDS:
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axisLabelDisplayAreas = getAxisLabelDisplayAreas(
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/* size= */ mViewModel.size() - 1,
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/* baselineX= */ mDividerWidth + unitWidth * .5f,
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/* offsetX= */ mDividerWidth + unitWidth,
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baselineY,
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/* shiftFirstAndLast= */ false);
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break;
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case BETWEEN_TRAPEZOIDS:
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default:
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axisLabelDisplayAreas = getAxisLabelDisplayAreas(
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/* size= */ mViewModel.size(),
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/* baselineX= */ mDividerWidth * .5f,
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/* offsetX= */ mDividerWidth + unitWidth,
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baselineY,
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/* shiftFirstAndLast= */ true);
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break;
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}
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drawAxisLabels(canvas, axisLabelDisplayAreas, baselineY);
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}
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}
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/** Gets all the axis label texts displaying area positions if they are shown. */
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private Rect[] getAxisLabelDisplayAreas(final int size, final float baselineX,
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final float offsetX, final float baselineY, final boolean shiftFirstAndLast) {
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final Rect[] result = new Rect[size];
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for (int index = 0; index < result.length; index++) {
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final float width = mAxisLabelsBounds.get(index).width();
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float middle = baselineX + index * offsetX;
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if (shiftFirstAndLast) {
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if (index == 0) {
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middle += width * .5f;
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}
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if (index == size - 1) {
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middle -= width * .5f;
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}
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}
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final float left = middle - width * .5f;
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final float right = left + width;
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final float top = baselineY + mAxisLabelsBounds.get(index).top;
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final float bottom = top + mAxisLabelsBounds.get(index).height();
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result[index] = new Rect(round(left), round(top), round(right), round(bottom));
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}
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return result;
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}
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private void drawAxisLabels(Canvas canvas, final Rect[] displayAreas, final float baselineY) {
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final int lastIndex = displayAreas.length - 1;
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// Suppose first and last labels are always able to draw.
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drawAxisLabelText(canvas, 0, displayAreas[0], baselineY);
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drawAxisLabelText(canvas, lastIndex, displayAreas[lastIndex], baselineY);
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drawAxisLabelsBetweenStartIndexAndEndIndex(canvas, displayAreas, 0, lastIndex, baselineY);
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}
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/**
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* Recursively draws axis labels between the start index and the end index. If the inner number
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* can be exactly divided into 2 parts, check and draw the middle index label and then
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* recursively draw the 2 parts. Otherwise, divide into 3 parts. Check and draw the middle two
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* labels and then recursively draw the 3 parts. If there are any overlaps, skip drawing and go
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* back to the uplevel of the recursion.
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*/
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private void drawAxisLabelsBetweenStartIndexAndEndIndex(Canvas canvas,
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final Rect[] displayAreas, final int startIndex, final int endIndex,
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final float baselineY) {
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if (endIndex - startIndex <= 1) {
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return;
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}
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if ((endIndex - startIndex) % 2 == 0) {
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int middleIndex = (startIndex + endIndex) / 2;
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if (hasOverlap(displayAreas, startIndex, middleIndex)
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|| hasOverlap(displayAreas, middleIndex, endIndex)) {
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return;
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}
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drawAxisLabelText(canvas, middleIndex, displayAreas[middleIndex], baselineY);
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drawAxisLabelsBetweenStartIndexAndEndIndex(
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canvas, displayAreas, startIndex, middleIndex, baselineY);
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drawAxisLabelsBetweenStartIndexAndEndIndex(
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canvas, displayAreas, middleIndex, endIndex, baselineY);
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} else {
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int middleIndex1 = startIndex + round((endIndex - startIndex) / 3f);
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int middleIndex2 = startIndex + round((endIndex - startIndex) * 2 / 3f);
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if (hasOverlap(displayAreas, startIndex, middleIndex1)
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|| hasOverlap(displayAreas, middleIndex1, middleIndex2)
|
|
|| hasOverlap(displayAreas, middleIndex2, endIndex)) {
|
|
return;
|
|
}
|
|
drawAxisLabelText(canvas, middleIndex1, displayAreas[middleIndex1], baselineY);
|
|
drawAxisLabelText(canvas, middleIndex2, displayAreas[middleIndex2], baselineY);
|
|
drawAxisLabelsBetweenStartIndexAndEndIndex(
|
|
canvas, displayAreas, startIndex, middleIndex1, baselineY);
|
|
drawAxisLabelsBetweenStartIndexAndEndIndex(
|
|
canvas, displayAreas, middleIndex1, middleIndex2, baselineY);
|
|
drawAxisLabelsBetweenStartIndexAndEndIndex(
|
|
canvas, displayAreas, middleIndex2, endIndex, baselineY);
|
|
}
|
|
}
|
|
|
|
private boolean hasOverlap(
|
|
final Rect[] displayAreas, final int leftIndex, final int rightIndex) {
|
|
return displayAreas[leftIndex].right + mTextPadding * 2.3f > displayAreas[rightIndex].left;
|
|
}
|
|
|
|
private void drawAxisLabelText(
|
|
Canvas canvas, final int index, final Rect displayArea, final float baselineY) {
|
|
mTextPaint.setTextAlign(Paint.Align.CENTER);
|
|
canvas.drawText(
|
|
mViewModel.getText(index),
|
|
displayArea.centerX(),
|
|
baselineY,
|
|
mTextPaint);
|
|
}
|
|
|
|
private void drawTrapezoids(Canvas canvas) {
|
|
// Ignores invalid trapezoid data.
|
|
if (mViewModel == null) {
|
|
return;
|
|
}
|
|
final float trapezoidBottom =
|
|
getHeight() - mIndent.bottom - mDividerHeight - mDividerWidth
|
|
- mTrapezoidVOffset;
|
|
final float availableSpace =
|
|
trapezoidBottom - mDividerWidth * .5f - mIndent.top - mTrapezoidVOffset;
|
|
final float unitHeight = availableSpace / 100f;
|
|
// Draws all trapezoid shapes into the canvas.
|
|
final Path trapezoidPath = new Path();
|
|
Path trapezoidCurvePath = null;
|
|
for (int index = 0; index < mTrapezoidSlots.length; index++) {
|
|
// Not draws the trapezoid for corner or not initialization cases.
|
|
if (!isValidToDraw(mViewModel, index)) {
|
|
continue;
|
|
}
|
|
// Configures the trapezoid paint color.
|
|
final int trapezoidColor = (mViewModel.selectedIndex() == index
|
|
|| mViewModel.selectedIndex() == BatteryChartViewModel.SELECTED_INDEX_ALL)
|
|
? mTrapezoidSolidColor : mTrapezoidColor;
|
|
final boolean isHoverState = mHoveredIndex == index && isValidToDraw(mViewModel,
|
|
mHoveredIndex);
|
|
mTrapezoidPaint.setColor(isHoverState ? mTrapezoidHoverColor : trapezoidColor);
|
|
|
|
final float leftTop = round(
|
|
trapezoidBottom - requireNonNull(mViewModel.getLevel(index)) * unitHeight);
|
|
final float rightTop = round(trapezoidBottom
|
|
- requireNonNull(mViewModel.getLevel(index + 1)) * unitHeight);
|
|
trapezoidPath.reset();
|
|
trapezoidPath.moveTo(mTrapezoidSlots[index].mLeft, trapezoidBottom);
|
|
trapezoidPath.lineTo(mTrapezoidSlots[index].mLeft, leftTop);
|
|
trapezoidPath.lineTo(mTrapezoidSlots[index].mRight, rightTop);
|
|
trapezoidPath.lineTo(mTrapezoidSlots[index].mRight, trapezoidBottom);
|
|
// A tricky way to make the trapezoid shape drawing the rounded corner.
|
|
trapezoidPath.lineTo(mTrapezoidSlots[index].mLeft, trapezoidBottom);
|
|
trapezoidPath.lineTo(mTrapezoidSlots[index].mLeft, leftTop);
|
|
// Draws the trapezoid shape into canvas.
|
|
canvas.drawPath(trapezoidPath, mTrapezoidPaint);
|
|
}
|
|
}
|
|
|
|
// Searches the corresponding trapezoid index from x location.
|
|
private int getTrapezoidIndex(float x) {
|
|
if (mTrapezoidSlots == null) {
|
|
return BatteryChartViewModel.SELECTED_INDEX_INVALID;
|
|
}
|
|
for (int index = 0; index < mTrapezoidSlots.length; index++) {
|
|
final TrapezoidSlot slot = mTrapezoidSlots[index];
|
|
if (x >= slot.mLeft - mTrapezoidHOffset
|
|
&& x <= slot.mRight + mTrapezoidHOffset) {
|
|
return index;
|
|
}
|
|
}
|
|
return BatteryChartViewModel.SELECTED_INDEX_INVALID;
|
|
}
|
|
|
|
private void initializeAxisLabelsBounds() {
|
|
mAxisLabelsBounds.clear();
|
|
for (int i = 0; i < mViewModel.size(); i++) {
|
|
mAxisLabelsBounds.add(new Rect());
|
|
}
|
|
}
|
|
|
|
private static boolean isTrapezoidValid(
|
|
@NonNull BatteryChartViewModel viewModel, int trapezoidIndex) {
|
|
return viewModel.getLevel(trapezoidIndex) != null
|
|
&& viewModel.getLevel(trapezoidIndex + 1) != null;
|
|
}
|
|
|
|
private static boolean isTrapezoidIndexValid(
|
|
@NonNull BatteryChartViewModel viewModel, int trapezoidIndex) {
|
|
return viewModel != null
|
|
&& trapezoidIndex >= 0
|
|
&& trapezoidIndex < viewModel.size() - 1;
|
|
}
|
|
|
|
private static boolean isValidToDraw(BatteryChartViewModel viewModel, int trapezoidIndex) {
|
|
return isTrapezoidIndexValid(viewModel, trapezoidIndex)
|
|
&& isTrapezoidValid(viewModel, trapezoidIndex);
|
|
}
|
|
|
|
private static boolean hasAnyValidTrapezoid(@NonNull BatteryChartViewModel viewModel) {
|
|
// Sets the chart is clickable if there is at least one valid item in it.
|
|
for (int trapezoidIndex = 0; trapezoidIndex < viewModel.size() - 1; trapezoidIndex++) {
|
|
if (isTrapezoidValid(viewModel, trapezoidIndex)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static String[] getPercentages() {
|
|
return new String[]{
|
|
formatPercentage(/*percentage=*/ 100, /*round=*/ true),
|
|
formatPercentage(/*percentage=*/ 50, /*round=*/ true),
|
|
formatPercentage(/*percentage=*/ 0, /*round=*/ true)};
|
|
}
|
|
|
|
private class BatteryChartAccessibilityNodeProvider extends AccessibilityNodeProvider {
|
|
@Override
|
|
public AccessibilityNodeInfo createAccessibilityNodeInfo(int virtualViewId) {
|
|
if (virtualViewId == AccessibilityNodeProvider.HOST_VIEW_ID) {
|
|
final AccessibilityNodeInfo hostInfo =
|
|
new AccessibilityNodeInfo(BatteryChartView.this);
|
|
for (int index = 0; index < mViewModel.size() - 1; index++) {
|
|
hostInfo.addChild(BatteryChartView.this, index);
|
|
}
|
|
return hostInfo;
|
|
}
|
|
final int index = virtualViewId;
|
|
if (!isTrapezoidIndexValid(mViewModel, index)) {
|
|
Log.w(TAG, "Invalid virtual view id:" + index);
|
|
return null;
|
|
}
|
|
final AccessibilityNodeInfo childInfo =
|
|
new AccessibilityNodeInfo(BatteryChartView.this, index);
|
|
onInitializeAccessibilityNodeInfo(childInfo);
|
|
childInfo.setClickable(isValidToDraw(mViewModel, index));
|
|
childInfo.setText(mViewModel.getFullText(index));
|
|
childInfo.setContentDescription(mViewModel.getFullText(index));
|
|
|
|
final Rect bounds = new Rect();
|
|
getBoundsOnScreen(bounds, true);
|
|
final int hostLeft = bounds.left;
|
|
bounds.left = round(hostLeft + mTrapezoidSlots[index].mLeft);
|
|
bounds.right = round(hostLeft + mTrapezoidSlots[index].mRight);
|
|
childInfo.setBoundsInScreen(bounds);
|
|
return childInfo;
|
|
}
|
|
|
|
@Override
|
|
public boolean performAction(int virtualViewId, int action,
|
|
@Nullable Bundle arguments) {
|
|
if (virtualViewId == AccessibilityNodeProvider.HOST_VIEW_ID) {
|
|
return performAccessibilityAction(action, arguments);
|
|
}
|
|
switch (action) {
|
|
case AccessibilityNodeInfo.ACTION_CLICK:
|
|
onTrapezoidClicked(BatteryChartView.this, virtualViewId);
|
|
return true;
|
|
|
|
case AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS:
|
|
return sendAccessibilityEvent(virtualViewId,
|
|
AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
|
|
|
|
case AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS:
|
|
return sendAccessibilityEvent(virtualViewId,
|
|
AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED);
|
|
|
|
default:
|
|
return performAccessibilityAction(action, arguments);
|
|
}
|
|
}
|
|
}
|
|
|
|
// A container class for each trapezoid left and right location.
|
|
@VisibleForTesting
|
|
static final class TrapezoidSlot {
|
|
public float mLeft;
|
|
public float mRight;
|
|
|
|
@Override
|
|
public String toString() {
|
|
return String.format(Locale.US, "TrapezoidSlot[%f,%f]", mLeft, mRight);
|
|
}
|
|
}
|
|
}
|