| /* |
| * Copyright (C) 2013 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 android.widget; |
| |
| import android.animation.ObjectAnimator; |
| import android.annotation.IntDef; |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.Rect; |
| import android.graphics.Region; |
| import android.graphics.Typeface; |
| import android.os.Bundle; |
| import android.util.AttributeSet; |
| import android.util.FloatProperty; |
| import android.util.IntArray; |
| import android.util.Log; |
| import android.util.MathUtils; |
| import android.util.StateSet; |
| import android.util.TypedValue; |
| import android.view.HapticFeedbackConstants; |
| import android.view.InputDevice; |
| import android.view.MotionEvent; |
| import android.view.PointerIcon; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; |
| |
| import com.android.internal.R; |
| import com.android.internal.widget.ExploreByTouchHelper; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.Calendar; |
| import java.util.Locale; |
| |
| /** |
| * View to show a clock circle picker (with one or two picking circles) |
| * |
| * @hide |
| */ |
| public class RadialTimePickerView extends View { |
| private static final String TAG = "RadialTimePickerView"; |
| |
| public static final int HOURS = 0; |
| public static final int MINUTES = 1; |
| |
| /** @hide */ |
| @IntDef({HOURS, MINUTES}) |
| @Retention(RetentionPolicy.SOURCE) |
| @interface PickerType {} |
| |
| private static final int HOURS_INNER = 2; |
| |
| private static final int SELECTOR_CIRCLE = 0; |
| private static final int SELECTOR_DOT = 1; |
| private static final int SELECTOR_LINE = 2; |
| |
| private static final int AM = 0; |
| private static final int PM = 1; |
| |
| private static final int HOURS_IN_CIRCLE = 12; |
| private static final int MINUTES_IN_CIRCLE = 60; |
| private static final int DEGREES_FOR_ONE_HOUR = 360 / HOURS_IN_CIRCLE; |
| private static final int DEGREES_FOR_ONE_MINUTE = 360 / MINUTES_IN_CIRCLE; |
| |
| private static final int[] HOURS_NUMBERS = {12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; |
| private static final int[] HOURS_NUMBERS_24 = {0, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}; |
| private static final int[] MINUTES_NUMBERS = {0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55}; |
| |
| private static final int ANIM_DURATION_NORMAL = 500; |
| private static final int ANIM_DURATION_TOUCH = 60; |
| |
| private static final int[] SNAP_PREFER_30S_MAP = new int[361]; |
| |
| private static final int NUM_POSITIONS = 12; |
| private static final float[] COS_30 = new float[NUM_POSITIONS]; |
| private static final float[] SIN_30 = new float[NUM_POSITIONS]; |
| |
| /** "Something is wrong" color used when a color attribute is missing. */ |
| private static final int MISSING_COLOR = Color.MAGENTA; |
| |
| static { |
| // Prepare mapping to snap touchable degrees to selectable degrees. |
| preparePrefer30sMap(); |
| |
| final double increment = 2.0 * Math.PI / NUM_POSITIONS; |
| double angle = Math.PI / 2.0; |
| for (int i = 0; i < NUM_POSITIONS; i++) { |
| COS_30[i] = (float) Math.cos(angle); |
| SIN_30[i] = (float) Math.sin(angle); |
| angle += increment; |
| } |
| } |
| |
| private final FloatProperty<RadialTimePickerView> HOURS_TO_MINUTES = |
| new FloatProperty<RadialTimePickerView>("hoursToMinutes") { |
| @Override |
| public Float get(RadialTimePickerView radialTimePickerView) { |
| return radialTimePickerView.mHoursToMinutes; |
| } |
| |
| @Override |
| public void setValue(RadialTimePickerView object, float value) { |
| object.mHoursToMinutes = value; |
| object.invalidate(); |
| } |
| }; |
| |
| private final String[] mHours12Texts = new String[12]; |
| private final String[] mOuterHours24Texts = new String[12]; |
| private final String[] mInnerHours24Texts = new String[12]; |
| private final String[] mMinutesTexts = new String[12]; |
| |
| private final Paint[] mPaint = new Paint[2]; |
| private final Paint mPaintCenter = new Paint(); |
| private final Paint[] mPaintSelector = new Paint[3]; |
| private final Paint mPaintBackground = new Paint(); |
| |
| private final Typeface mTypeface; |
| |
| private final ColorStateList[] mTextColor = new ColorStateList[3]; |
| private final int[] mTextSize = new int[3]; |
| private final int[] mTextInset = new int[3]; |
| |
| private final float[][] mOuterTextX = new float[2][12]; |
| private final float[][] mOuterTextY = new float[2][12]; |
| |
| private final float[] mInnerTextX = new float[12]; |
| private final float[] mInnerTextY = new float[12]; |
| |
| private final int[] mSelectionDegrees = new int[2]; |
| |
| private final RadialPickerTouchHelper mTouchHelper; |
| |
| private final Path mSelectorPath = new Path(); |
| |
| private boolean mIs24HourMode; |
| private boolean mShowHours; |
| |
| private ObjectAnimator mHoursToMinutesAnimator; |
| private float mHoursToMinutes; |
| |
| /** |
| * When in 24-hour mode, indicates that the current hour is between |
| * 1 and 12 (inclusive). |
| */ |
| private boolean mIsOnInnerCircle; |
| |
| private int mSelectorRadius; |
| private int mSelectorStroke; |
| private int mSelectorDotRadius; |
| private int mCenterDotRadius; |
| |
| private int mSelectorColor; |
| private int mSelectorDotColor; |
| |
| private int mXCenter; |
| private int mYCenter; |
| private int mCircleRadius; |
| |
| private int mMinDistForInnerNumber; |
| private int mMaxDistForOuterNumber; |
| private int mHalfwayDist; |
| |
| private String[] mOuterTextHours; |
| private String[] mInnerTextHours; |
| private String[] mMinutesText; |
| |
| private int mAmOrPm; |
| |
| private float mDisabledAlpha; |
| |
| private OnValueSelectedListener mListener; |
| |
| private boolean mInputEnabled = true; |
| |
| interface OnValueSelectedListener { |
| /** |
| * Called when the selected value at a given picker index has changed. |
| * |
| * @param pickerType the type of value that has changed, one of: |
| * <ul> |
| * <li>{@link #MINUTES} |
| * <li>{@link #HOURS} |
| * </ul> |
| * @param newValue the new value as minute in hour (0-59) or hour in |
| * day (0-23) |
| * @param autoAdvance when the picker type is {@link #HOURS}, |
| * {@code true} to switch to the {@link #MINUTES} |
| * picker or {@code false} to stay on the current |
| * picker. No effect when picker type is |
| * {@link #MINUTES}. |
| */ |
| void onValueSelected(@PickerType int pickerType, int newValue, boolean autoAdvance); |
| } |
| |
| /** |
| * Split up the 360 degrees of the circle among the 60 selectable values. Assigns a larger |
| * selectable area to each of the 12 visible values, such that the ratio of space apportioned |
| * to a visible value : space apportioned to a non-visible value will be 14 : 4. |
| * E.g. the output of 30 degrees should have a higher range of input associated with it than |
| * the output of 24 degrees, because 30 degrees corresponds to a visible number on the clock |
| * circle (5 on the minutes, 1 or 13 on the hours). |
| */ |
| private static void preparePrefer30sMap() { |
| // We'll split up the visible output and the non-visible output such that each visible |
| // output will correspond to a range of 14 associated input degrees, and each non-visible |
| // output will correspond to a range of 4 associate input degrees, so visible numbers |
| // are more than 3 times easier to get than non-visible numbers: |
| // {354-359,0-7}:0, {8-11}:6, {12-15}:12, {16-19}:18, {20-23}:24, {24-37}:30, etc. |
| // |
| // If an output of 30 degrees should correspond to a range of 14 associated degrees, then |
| // we'll need any input between 24 - 37 to snap to 30. Working out from there, 20-23 should |
| // snap to 24, while 38-41 should snap to 36. This is somewhat counter-intuitive, that you |
| // can be touching 36 degrees but have the selection snapped to 30 degrees; however, this |
| // inconsistency isn't noticeable at such fine-grained degrees, and it affords us the |
| // ability to aggressively prefer the visible values by a factor of more than 3:1, which |
| // greatly contributes to the selectability of these values. |
| |
| // The first output is 0, and each following output will increment by 6 {0, 6, 12, ...}. |
| int snappedOutputDegrees = 0; |
| // Count of how many inputs we've designated to the specified output. |
| int count = 1; |
| // How many input we expect for a specified output. This will be 14 for output divisible |
| // by 30, and 4 for the remaining output. We'll special case the outputs of 0 and 360, so |
| // the caller can decide which they need. |
| int expectedCount = 8; |
| // Iterate through the input. |
| for (int degrees = 0; degrees < 361; degrees++) { |
| // Save the input-output mapping. |
| SNAP_PREFER_30S_MAP[degrees] = snappedOutputDegrees; |
| // If this is the last input for the specified output, calculate the next output and |
| // the next expected count. |
| if (count == expectedCount) { |
| snappedOutputDegrees += 6; |
| if (snappedOutputDegrees == 360) { |
| expectedCount = 7; |
| } else if (snappedOutputDegrees % 30 == 0) { |
| expectedCount = 14; |
| } else { |
| expectedCount = 4; |
| } |
| count = 1; |
| } else { |
| count++; |
| } |
| } |
| } |
| |
| /** |
| * Returns mapping of any input degrees (0 to 360) to one of 60 selectable output degrees, |
| * where the degrees corresponding to visible numbers (i.e. those divisible by 30) will be |
| * weighted heavier than the degrees corresponding to non-visible numbers. |
| * See {@link #preparePrefer30sMap()} documentation for the rationale and generation of the |
| * mapping. |
| */ |
| private static int snapPrefer30s(int degrees) { |
| if (SNAP_PREFER_30S_MAP == null) { |
| return -1; |
| } |
| return SNAP_PREFER_30S_MAP[degrees]; |
| } |
| |
| /** |
| * Returns mapping of any input degrees (0 to 360) to one of 12 visible output degrees (all |
| * multiples of 30), where the input will be "snapped" to the closest visible degrees. |
| * @param degrees The input degrees |
| * @param forceHigherOrLower The output may be forced to either the higher or lower step, or may |
| * be allowed to snap to whichever is closer. Use 1 to force strictly higher, -1 to force |
| * strictly lower, and 0 to snap to the closer one. |
| * @return output degrees, will be a multiple of 30 |
| */ |
| private static int snapOnly30s(int degrees, int forceHigherOrLower) { |
| final int stepSize = DEGREES_FOR_ONE_HOUR; |
| int floor = (degrees / stepSize) * stepSize; |
| final int ceiling = floor + stepSize; |
| if (forceHigherOrLower == 1) { |
| degrees = ceiling; |
| } else if (forceHigherOrLower == -1) { |
| if (degrees == floor) { |
| floor -= stepSize; |
| } |
| degrees = floor; |
| } else { |
| if ((degrees - floor) < (ceiling - degrees)) { |
| degrees = floor; |
| } else { |
| degrees = ceiling; |
| } |
| } |
| return degrees; |
| } |
| |
| @SuppressWarnings("unused") |
| public RadialTimePickerView(Context context) { |
| this(context, null); |
| } |
| |
| public RadialTimePickerView(Context context, AttributeSet attrs) { |
| this(context, attrs, R.attr.timePickerStyle); |
| } |
| |
| public RadialTimePickerView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public RadialTimePickerView( |
| Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs); |
| |
| applyAttributes(attrs, defStyleAttr, defStyleRes); |
| |
| // Pull disabled alpha from theme. |
| final TypedValue outValue = new TypedValue(); |
| context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true); |
| mDisabledAlpha = outValue.getFloat(); |
| |
| mTypeface = Typeface.create("sans-serif", Typeface.NORMAL); |
| |
| mPaint[HOURS] = new Paint(); |
| mPaint[HOURS].setAntiAlias(true); |
| mPaint[HOURS].setTextAlign(Paint.Align.CENTER); |
| |
| mPaint[MINUTES] = new Paint(); |
| mPaint[MINUTES].setAntiAlias(true); |
| mPaint[MINUTES].setTextAlign(Paint.Align.CENTER); |
| |
| mPaintCenter.setAntiAlias(true); |
| |
| mPaintSelector[SELECTOR_CIRCLE] = new Paint(); |
| mPaintSelector[SELECTOR_CIRCLE].setAntiAlias(true); |
| |
| mPaintSelector[SELECTOR_DOT] = new Paint(); |
| mPaintSelector[SELECTOR_DOT].setAntiAlias(true); |
| |
| mPaintSelector[SELECTOR_LINE] = new Paint(); |
| mPaintSelector[SELECTOR_LINE].setAntiAlias(true); |
| mPaintSelector[SELECTOR_LINE].setStrokeWidth(2); |
| |
| mPaintBackground.setAntiAlias(true); |
| |
| final Resources res = getResources(); |
| mSelectorRadius = res.getDimensionPixelSize(R.dimen.timepicker_selector_radius); |
| mSelectorStroke = res.getDimensionPixelSize(R.dimen.timepicker_selector_stroke); |
| mSelectorDotRadius = res.getDimensionPixelSize(R.dimen.timepicker_selector_dot_radius); |
| mCenterDotRadius = res.getDimensionPixelSize(R.dimen.timepicker_center_dot_radius); |
| |
| mTextSize[HOURS] = res.getDimensionPixelSize(R.dimen.timepicker_text_size_normal); |
| mTextSize[MINUTES] = res.getDimensionPixelSize(R.dimen.timepicker_text_size_normal); |
| mTextSize[HOURS_INNER] = res.getDimensionPixelSize(R.dimen.timepicker_text_size_inner); |
| |
| mTextInset[HOURS] = res.getDimensionPixelSize(R.dimen.timepicker_text_inset_normal); |
| mTextInset[MINUTES] = res.getDimensionPixelSize(R.dimen.timepicker_text_inset_normal); |
| mTextInset[HOURS_INNER] = res.getDimensionPixelSize(R.dimen.timepicker_text_inset_inner); |
| |
| mShowHours = true; |
| mHoursToMinutes = HOURS; |
| mIs24HourMode = false; |
| mAmOrPm = AM; |
| |
| // Set up accessibility components. |
| mTouchHelper = new RadialPickerTouchHelper(); |
| setAccessibilityDelegate(mTouchHelper); |
| |
| if (getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) { |
| setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); |
| } |
| |
| initHoursAndMinutesText(); |
| initData(); |
| |
| // Initial values |
| final Calendar calendar = Calendar.getInstance(Locale.getDefault()); |
| final int currentHour = calendar.get(Calendar.HOUR_OF_DAY); |
| final int currentMinute = calendar.get(Calendar.MINUTE); |
| |
| setCurrentHourInternal(currentHour, false, false); |
| setCurrentMinuteInternal(currentMinute, false); |
| |
| setHapticFeedbackEnabled(true); |
| } |
| |
| void applyAttributes(AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| final Context context = getContext(); |
| final TypedArray a = getContext().obtainStyledAttributes(attrs, |
| R.styleable.TimePicker, defStyleAttr, defStyleRes); |
| saveAttributeDataForStyleable(context, R.styleable.TimePicker, |
| attrs, a, defStyleAttr, defStyleRes); |
| |
| final ColorStateList numbersTextColor = a.getColorStateList( |
| R.styleable.TimePicker_numbersTextColor); |
| final ColorStateList numbersInnerTextColor = a.getColorStateList( |
| R.styleable.TimePicker_numbersInnerTextColor); |
| mTextColor[HOURS] = numbersTextColor == null ? |
| ColorStateList.valueOf(MISSING_COLOR) : numbersTextColor; |
| mTextColor[HOURS_INNER] = numbersInnerTextColor == null ? |
| ColorStateList.valueOf(MISSING_COLOR) : numbersInnerTextColor; |
| mTextColor[MINUTES] = mTextColor[HOURS]; |
| |
| // Set up various colors derived from the selector "activated" state. |
| final ColorStateList selectorColors = a.getColorStateList( |
| R.styleable.TimePicker_numbersSelectorColor); |
| final int selectorActivatedColor; |
| if (selectorColors != null) { |
| final int[] stateSetEnabledActivated = StateSet.get( |
| StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_ACTIVATED); |
| selectorActivatedColor = selectorColors.getColorForState( |
| stateSetEnabledActivated, 0); |
| } else { |
| selectorActivatedColor = MISSING_COLOR; |
| } |
| |
| mPaintCenter.setColor(selectorActivatedColor); |
| |
| final int[] stateSetActivated = StateSet.get( |
| StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_ACTIVATED); |
| |
| mSelectorColor = selectorActivatedColor; |
| mSelectorDotColor = mTextColor[HOURS].getColorForState(stateSetActivated, 0); |
| |
| mPaintBackground.setColor(a.getColor(R.styleable.TimePicker_numbersBackgroundColor, |
| context.getColor(R.color.timepicker_default_numbers_background_color_material))); |
| |
| a.recycle(); |
| } |
| |
| public void initialize(int hour, int minute, boolean is24HourMode) { |
| if (mIs24HourMode != is24HourMode) { |
| mIs24HourMode = is24HourMode; |
| initData(); |
| } |
| |
| setCurrentHourInternal(hour, false, false); |
| setCurrentMinuteInternal(minute, false); |
| } |
| |
| public void setCurrentItemShowing(int item, boolean animate) { |
| switch (item){ |
| case HOURS: |
| showHours(animate); |
| break; |
| case MINUTES: |
| showMinutes(animate); |
| break; |
| default: |
| Log.e(TAG, "ClockView does not support showing item " + item); |
| } |
| } |
| |
| public int getCurrentItemShowing() { |
| return mShowHours ? HOURS : MINUTES; |
| } |
| |
| public void setOnValueSelectedListener(OnValueSelectedListener listener) { |
| mListener = listener; |
| } |
| |
| /** |
| * Sets the current hour in 24-hour time. |
| * |
| * @param hour the current hour between 0 and 23 (inclusive) |
| */ |
| public void setCurrentHour(int hour) { |
| setCurrentHourInternal(hour, true, false); |
| } |
| |
| /** |
| * Sets the current hour. |
| * |
| * @param hour The current hour |
| * @param callback Whether the value listener should be invoked |
| * @param autoAdvance Whether the listener should auto-advance to the next |
| * selection mode, e.g. hour to minutes |
| */ |
| private void setCurrentHourInternal(int hour, boolean callback, boolean autoAdvance) { |
| final int degrees = (hour % 12) * DEGREES_FOR_ONE_HOUR; |
| mSelectionDegrees[HOURS] = degrees; |
| |
| // 0 is 12 AM (midnight) and 12 is 12 PM (noon). |
| final int amOrPm = (hour == 0 || (hour % 24) < 12) ? AM : PM; |
| final boolean isOnInnerCircle = getInnerCircleForHour(hour); |
| if (mAmOrPm != amOrPm || mIsOnInnerCircle != isOnInnerCircle) { |
| mAmOrPm = amOrPm; |
| mIsOnInnerCircle = isOnInnerCircle; |
| |
| initData(); |
| mTouchHelper.invalidateRoot(); |
| } |
| |
| invalidate(); |
| |
| if (callback && mListener != null) { |
| mListener.onValueSelected(HOURS, hour, autoAdvance); |
| } |
| } |
| |
| /** |
| * Returns the current hour in 24-hour time. |
| * |
| * @return the current hour between 0 and 23 (inclusive) |
| */ |
| public int getCurrentHour() { |
| return getHourForDegrees(mSelectionDegrees[HOURS], mIsOnInnerCircle); |
| } |
| |
| private int getHourForDegrees(int degrees, boolean innerCircle) { |
| int hour = (degrees / DEGREES_FOR_ONE_HOUR) % 12; |
| if (mIs24HourMode) { |
| // Convert the 12-hour value into 24-hour time based on where the |
| // selector is positioned. |
| if (!innerCircle && hour == 0) { |
| // Outer circle is 1 through 12. |
| hour = 12; |
| } else if (innerCircle && hour != 0) { |
| // Inner circle is 13 through 23 and 0. |
| hour += 12; |
| } |
| } else if (mAmOrPm == PM) { |
| hour += 12; |
| } |
| return hour; |
| } |
| |
| /** |
| * @param hour the hour in 24-hour time or 12-hour time |
| */ |
| private int getDegreesForHour(int hour) { |
| // Convert to be 0-11. |
| if (mIs24HourMode) { |
| if (hour >= 12) { |
| hour -= 12; |
| } |
| } else if (hour == 12) { |
| hour = 0; |
| } |
| return hour * DEGREES_FOR_ONE_HOUR; |
| } |
| |
| /** |
| * @param hour the hour in 24-hour time or 12-hour time |
| */ |
| private boolean getInnerCircleForHour(int hour) { |
| return mIs24HourMode && (hour == 0 || hour > 12); |
| } |
| |
| public void setCurrentMinute(int minute) { |
| setCurrentMinuteInternal(minute, true); |
| } |
| |
| private void setCurrentMinuteInternal(int minute, boolean callback) { |
| mSelectionDegrees[MINUTES] = (minute % MINUTES_IN_CIRCLE) * DEGREES_FOR_ONE_MINUTE; |
| |
| invalidate(); |
| |
| if (callback && mListener != null) { |
| mListener.onValueSelected(MINUTES, minute, false); |
| } |
| } |
| |
| // Returns minutes in 0-59 range |
| public int getCurrentMinute() { |
| return getMinuteForDegrees(mSelectionDegrees[MINUTES]); |
| } |
| |
| private int getMinuteForDegrees(int degrees) { |
| return degrees / DEGREES_FOR_ONE_MINUTE; |
| } |
| |
| private int getDegreesForMinute(int minute) { |
| return minute * DEGREES_FOR_ONE_MINUTE; |
| } |
| |
| /** |
| * Sets whether the picker is showing AM or PM hours. Has no effect when |
| * in 24-hour mode. |
| * |
| * @param amOrPm {@link #AM} or {@link #PM} |
| * @return {@code true} if the value changed from what was previously set, |
| * or {@code false} otherwise |
| */ |
| public boolean setAmOrPm(int amOrPm) { |
| if (mAmOrPm == amOrPm || mIs24HourMode) { |
| return false; |
| } |
| |
| mAmOrPm = amOrPm; |
| invalidate(); |
| mTouchHelper.invalidateRoot(); |
| return true; |
| } |
| |
| public int getAmOrPm() { |
| return mAmOrPm; |
| } |
| |
| public void showHours(boolean animate) { |
| showPicker(true, animate); |
| } |
| |
| public void showMinutes(boolean animate) { |
| showPicker(false, animate); |
| } |
| |
| private void initHoursAndMinutesText() { |
| // Initialize the hours and minutes numbers. |
| for (int i = 0; i < 12; i++) { |
| mHours12Texts[i] = String.format("%d", HOURS_NUMBERS[i]); |
| mInnerHours24Texts[i] = String.format("%02d", HOURS_NUMBERS_24[i]); |
| mOuterHours24Texts[i] = String.format("%d", HOURS_NUMBERS[i]); |
| mMinutesTexts[i] = String.format("%02d", MINUTES_NUMBERS[i]); |
| } |
| } |
| |
| private void initData() { |
| if (mIs24HourMode) { |
| mOuterTextHours = mOuterHours24Texts; |
| mInnerTextHours = mInnerHours24Texts; |
| } else { |
| mOuterTextHours = mHours12Texts; |
| mInnerTextHours = mHours12Texts; |
| } |
| |
| mMinutesText = mMinutesTexts; |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| if (!changed) { |
| return; |
| } |
| |
| mXCenter = getWidth() / 2; |
| mYCenter = getHeight() / 2; |
| mCircleRadius = Math.min(mXCenter, mYCenter); |
| |
| mMinDistForInnerNumber = mCircleRadius - mTextInset[HOURS_INNER] - mSelectorRadius; |
| mMaxDistForOuterNumber = mCircleRadius - mTextInset[HOURS] + mSelectorRadius; |
| mHalfwayDist = mCircleRadius - (mTextInset[HOURS] + mTextInset[HOURS_INNER]) / 2; |
| |
| calculatePositionsHours(); |
| calculatePositionsMinutes(); |
| |
| mTouchHelper.invalidateRoot(); |
| } |
| |
| @Override |
| public void onDraw(Canvas canvas) { |
| final float alphaMod = mInputEnabled ? 1 : mDisabledAlpha; |
| |
| drawCircleBackground(canvas); |
| |
| final Path selectorPath = mSelectorPath; |
| drawSelector(canvas, selectorPath); |
| drawHours(canvas, selectorPath, alphaMod); |
| drawMinutes(canvas, selectorPath, alphaMod); |
| drawCenter(canvas, alphaMod); |
| } |
| |
| private void showPicker(boolean hours, boolean animate) { |
| if (mShowHours == hours) { |
| return; |
| } |
| |
| mShowHours = hours; |
| |
| if (animate) { |
| animatePicker(hours, ANIM_DURATION_NORMAL); |
| } else { |
| // If we have a pending or running animator, cancel it. |
| if (mHoursToMinutesAnimator != null && mHoursToMinutesAnimator.isStarted()) { |
| mHoursToMinutesAnimator.cancel(); |
| mHoursToMinutesAnimator = null; |
| } |
| mHoursToMinutes = hours ? 0.0f : 1.0f; |
| } |
| |
| initData(); |
| invalidate(); |
| mTouchHelper.invalidateRoot(); |
| } |
| |
| private void animatePicker(boolean hoursToMinutes, long duration) { |
| final float target = hoursToMinutes ? HOURS : MINUTES; |
| if (mHoursToMinutes == target) { |
| // If we have a pending or running animator, cancel it. |
| if (mHoursToMinutesAnimator != null && mHoursToMinutesAnimator.isStarted()) { |
| mHoursToMinutesAnimator.cancel(); |
| mHoursToMinutesAnimator = null; |
| } |
| |
| // We're already showing the correct picker. |
| return; |
| } |
| |
| mHoursToMinutesAnimator = ObjectAnimator.ofFloat(this, HOURS_TO_MINUTES, target); |
| mHoursToMinutesAnimator.setAutoCancel(true); |
| mHoursToMinutesAnimator.setDuration(duration); |
| mHoursToMinutesAnimator.start(); |
| } |
| |
| private void drawCircleBackground(Canvas canvas) { |
| canvas.drawCircle(mXCenter, mYCenter, mCircleRadius, mPaintBackground); |
| } |
| |
| private void drawHours(Canvas canvas, Path selectorPath, float alphaMod) { |
| final int hoursAlpha = (int) (255f * (1f - mHoursToMinutes) * alphaMod + 0.5f); |
| if (hoursAlpha > 0) { |
| // Exclude the selector region, then draw inner/outer hours with no |
| // activated states. |
| canvas.save(Canvas.CLIP_SAVE_FLAG); |
| canvas.clipPath(selectorPath, Region.Op.DIFFERENCE); |
| drawHoursClipped(canvas, hoursAlpha, false); |
| canvas.restore(); |
| |
| // Intersect the selector region, then draw minutes with only |
| // activated states. |
| canvas.save(Canvas.CLIP_SAVE_FLAG); |
| canvas.clipPath(selectorPath, Region.Op.INTERSECT); |
| drawHoursClipped(canvas, hoursAlpha, true); |
| canvas.restore(); |
| } |
| } |
| |
| private void drawHoursClipped(Canvas canvas, int hoursAlpha, boolean showActivated) { |
| // Draw outer hours. |
| drawTextElements(canvas, mTextSize[HOURS], mTypeface, mTextColor[HOURS], mOuterTextHours, |
| mOuterTextX[HOURS], mOuterTextY[HOURS], mPaint[HOURS], hoursAlpha, |
| showActivated && !mIsOnInnerCircle, mSelectionDegrees[HOURS], showActivated); |
| |
| // Draw inner hours (13-00) for 24-hour time. |
| if (mIs24HourMode && mInnerTextHours != null) { |
| drawTextElements(canvas, mTextSize[HOURS_INNER], mTypeface, mTextColor[HOURS_INNER], |
| mInnerTextHours, mInnerTextX, mInnerTextY, mPaint[HOURS], hoursAlpha, |
| showActivated && mIsOnInnerCircle, mSelectionDegrees[HOURS], showActivated); |
| } |
| } |
| |
| private void drawMinutes(Canvas canvas, Path selectorPath, float alphaMod) { |
| final int minutesAlpha = (int) (255f * mHoursToMinutes * alphaMod + 0.5f); |
| if (minutesAlpha > 0) { |
| // Exclude the selector region, then draw minutes with no |
| // activated states. |
| canvas.save(Canvas.CLIP_SAVE_FLAG); |
| canvas.clipPath(selectorPath, Region.Op.DIFFERENCE); |
| drawMinutesClipped(canvas, minutesAlpha, false); |
| canvas.restore(); |
| |
| // Intersect the selector region, then draw minutes with only |
| // activated states. |
| canvas.save(Canvas.CLIP_SAVE_FLAG); |
| canvas.clipPath(selectorPath, Region.Op.INTERSECT); |
| drawMinutesClipped(canvas, minutesAlpha, true); |
| canvas.restore(); |
| } |
| } |
| |
| private void drawMinutesClipped(Canvas canvas, int minutesAlpha, boolean showActivated) { |
| drawTextElements(canvas, mTextSize[MINUTES], mTypeface, mTextColor[MINUTES], mMinutesText, |
| mOuterTextX[MINUTES], mOuterTextY[MINUTES], mPaint[MINUTES], minutesAlpha, |
| showActivated, mSelectionDegrees[MINUTES], showActivated); |
| } |
| |
| private void drawCenter(Canvas canvas, float alphaMod) { |
| mPaintCenter.setAlpha((int) (255 * alphaMod + 0.5f)); |
| canvas.drawCircle(mXCenter, mYCenter, mCenterDotRadius, mPaintCenter); |
| } |
| |
| private int getMultipliedAlpha(int argb, int alpha) { |
| return (int) (Color.alpha(argb) * (alpha / 255.0) + 0.5); |
| } |
| |
| private void drawSelector(Canvas canvas, Path selectorPath) { |
| // Determine the current length, angle, and dot scaling factor. |
| final int hoursIndex = mIsOnInnerCircle ? HOURS_INNER : HOURS; |
| final int hoursInset = mTextInset[hoursIndex]; |
| final int hoursAngleDeg = mSelectionDegrees[hoursIndex % 2]; |
| final float hoursDotScale = mSelectionDegrees[hoursIndex % 2] % 30 != 0 ? 1 : 0; |
| |
| final int minutesIndex = MINUTES; |
| final int minutesInset = mTextInset[minutesIndex]; |
| final int minutesAngleDeg = mSelectionDegrees[minutesIndex]; |
| final float minutesDotScale = mSelectionDegrees[minutesIndex] % 30 != 0 ? 1 : 0; |
| |
| // Calculate the current radius at which to place the selection circle. |
| final int selRadius = mSelectorRadius; |
| final float selLength = |
| mCircleRadius - MathUtils.lerp(hoursInset, minutesInset, mHoursToMinutes); |
| final double selAngleRad = |
| Math.toRadians(MathUtils.lerpDeg(hoursAngleDeg, minutesAngleDeg, mHoursToMinutes)); |
| final float selCenterX = mXCenter + selLength * (float) Math.sin(selAngleRad); |
| final float selCenterY = mYCenter - selLength * (float) Math.cos(selAngleRad); |
| |
| // Draw the selection circle. |
| final Paint paint = mPaintSelector[SELECTOR_CIRCLE]; |
| paint.setColor(mSelectorColor); |
| canvas.drawCircle(selCenterX, selCenterY, selRadius, paint); |
| |
| // If needed, set up the clip path for later. |
| if (selectorPath != null) { |
| selectorPath.reset(); |
| selectorPath.addCircle(selCenterX, selCenterY, selRadius, Path.Direction.CCW); |
| } |
| |
| // Draw the dot if we're between two items. |
| final float dotScale = MathUtils.lerp(hoursDotScale, minutesDotScale, mHoursToMinutes); |
| if (dotScale > 0) { |
| final Paint dotPaint = mPaintSelector[SELECTOR_DOT]; |
| dotPaint.setColor(mSelectorDotColor); |
| canvas.drawCircle(selCenterX, selCenterY, mSelectorDotRadius * dotScale, dotPaint); |
| } |
| |
| // Shorten the line to only go from the edge of the center dot to the |
| // edge of the selection circle. |
| final double sin = Math.sin(selAngleRad); |
| final double cos = Math.cos(selAngleRad); |
| final float lineLength = selLength - selRadius; |
| final int centerX = mXCenter + (int) (mCenterDotRadius * sin); |
| final int centerY = mYCenter - (int) (mCenterDotRadius * cos); |
| final float linePointX = centerX + (int) (lineLength * sin); |
| final float linePointY = centerY - (int) (lineLength * cos); |
| |
| // Draw the line. |
| final Paint linePaint = mPaintSelector[SELECTOR_LINE]; |
| linePaint.setColor(mSelectorColor); |
| linePaint.setStrokeWidth(mSelectorStroke); |
| canvas.drawLine(mXCenter, mYCenter, linePointX, linePointY, linePaint); |
| } |
| |
| private void calculatePositionsHours() { |
| // Calculate the text positions |
| final float numbersRadius = mCircleRadius - mTextInset[HOURS]; |
| |
| // Calculate the positions for the 12 numbers in the main circle. |
| calculatePositions(mPaint[HOURS], numbersRadius, mXCenter, mYCenter, |
| mTextSize[HOURS], mOuterTextX[HOURS], mOuterTextY[HOURS]); |
| |
| // If we have an inner circle, calculate those positions too. |
| if (mIs24HourMode) { |
| final int innerNumbersRadius = mCircleRadius - mTextInset[HOURS_INNER]; |
| calculatePositions(mPaint[HOURS], innerNumbersRadius, mXCenter, mYCenter, |
| mTextSize[HOURS_INNER], mInnerTextX, mInnerTextY); |
| } |
| } |
| |
| private void calculatePositionsMinutes() { |
| // Calculate the text positions |
| final float numbersRadius = mCircleRadius - mTextInset[MINUTES]; |
| |
| // Calculate the positions for the 12 numbers in the main circle. |
| calculatePositions(mPaint[MINUTES], numbersRadius, mXCenter, mYCenter, |
| mTextSize[MINUTES], mOuterTextX[MINUTES], mOuterTextY[MINUTES]); |
| } |
| |
| /** |
| * Using the trigonometric Unit Circle, calculate the positions that the text will need to be |
| * drawn at based on the specified circle radius. Place the values in the textGridHeights and |
| * textGridWidths parameters. |
| */ |
| private static void calculatePositions(Paint paint, float radius, float xCenter, float yCenter, |
| float textSize, float[] x, float[] y) { |
| // Adjust yCenter to account for the text's baseline. |
| paint.setTextSize(textSize); |
| yCenter -= (paint.descent() + paint.ascent()) / 2; |
| |
| for (int i = 0; i < NUM_POSITIONS; i++) { |
| x[i] = xCenter - radius * COS_30[i]; |
| y[i] = yCenter - radius * SIN_30[i]; |
| } |
| } |
| |
| /** |
| * Draw the 12 text values at the positions specified by the textGrid parameters. |
| */ |
| private void drawTextElements(Canvas canvas, float textSize, Typeface typeface, |
| ColorStateList textColor, String[] texts, float[] textX, float[] textY, Paint paint, |
| int alpha, boolean showActivated, int activatedDegrees, boolean activatedOnly) { |
| paint.setTextSize(textSize); |
| paint.setTypeface(typeface); |
| |
| // The activated index can touch a range of elements. |
| final float activatedIndex = activatedDegrees / (360.0f / NUM_POSITIONS); |
| final int activatedFloor = (int) activatedIndex; |
| final int activatedCeil = ((int) Math.ceil(activatedIndex)) % NUM_POSITIONS; |
| |
| for (int i = 0; i < 12; i++) { |
| final boolean activated = (activatedFloor == i || activatedCeil == i); |
| if (activatedOnly && !activated) { |
| continue; |
| } |
| |
| final int stateMask = StateSet.VIEW_STATE_ENABLED |
| | (showActivated && activated ? StateSet.VIEW_STATE_ACTIVATED : 0); |
| final int color = textColor.getColorForState(StateSet.get(stateMask), 0); |
| paint.setColor(color); |
| paint.setAlpha(getMultipliedAlpha(color, alpha)); |
| |
| canvas.drawText(texts[i], textX[i], textY[i], paint); |
| } |
| } |
| |
| private int getDegreesFromXY(float x, float y, boolean constrainOutside) { |
| // Ensure the point is inside the touchable area. |
| final int innerBound; |
| final int outerBound; |
| if (mIs24HourMode && mShowHours) { |
| innerBound = mMinDistForInnerNumber; |
| outerBound = mMaxDistForOuterNumber; |
| } else { |
| final int index = mShowHours ? HOURS : MINUTES; |
| final int center = mCircleRadius - mTextInset[index]; |
| innerBound = center - mSelectorRadius; |
| outerBound = center + mSelectorRadius; |
| } |
| |
| final double dX = x - mXCenter; |
| final double dY = y - mYCenter; |
| final double distFromCenter = Math.sqrt(dX * dX + dY * dY); |
| if (distFromCenter < innerBound || constrainOutside && distFromCenter > outerBound) { |
| return -1; |
| } |
| |
| // Convert to degrees. |
| final int degrees = (int) (Math.toDegrees(Math.atan2(dY, dX) + Math.PI / 2) + 0.5); |
| if (degrees < 0) { |
| return degrees + 360; |
| } else { |
| return degrees; |
| } |
| } |
| |
| private boolean getInnerCircleFromXY(float x, float y) { |
| if (mIs24HourMode && mShowHours) { |
| final double dX = x - mXCenter; |
| final double dY = y - mYCenter; |
| final double distFromCenter = Math.sqrt(dX * dX + dY * dY); |
| return distFromCenter <= mHalfwayDist; |
| } |
| return false; |
| } |
| |
| boolean mChangedDuringTouch = false; |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| if (!mInputEnabled) { |
| return true; |
| } |
| |
| final int action = event.getActionMasked(); |
| if (action == MotionEvent.ACTION_MOVE |
| || action == MotionEvent.ACTION_UP |
| || action == MotionEvent.ACTION_DOWN) { |
| boolean forceSelection = false; |
| boolean autoAdvance = false; |
| |
| if (action == MotionEvent.ACTION_DOWN) { |
| // This is a new event stream, reset whether the value changed. |
| mChangedDuringTouch = false; |
| } else if (action == MotionEvent.ACTION_UP) { |
| autoAdvance = true; |
| |
| // If we saw a down/up pair without the value changing, assume |
| // this is a single-tap selection and force a change. |
| if (!mChangedDuringTouch) { |
| forceSelection = true; |
| } |
| } |
| |
| mChangedDuringTouch |= handleTouchInput( |
| event.getX(), event.getY(), forceSelection, autoAdvance); |
| } |
| |
| return true; |
| } |
| |
| private boolean handleTouchInput( |
| float x, float y, boolean forceSelection, boolean autoAdvance) { |
| final boolean isOnInnerCircle = getInnerCircleFromXY(x, y); |
| final int degrees = getDegreesFromXY(x, y, false); |
| if (degrees == -1) { |
| return false; |
| } |
| |
| // Ensure we're showing the correct picker. |
| animatePicker(mShowHours, ANIM_DURATION_TOUCH); |
| |
| final @PickerType int type; |
| final int newValue; |
| final boolean valueChanged; |
| |
| if (mShowHours) { |
| final int snapDegrees = snapOnly30s(degrees, 0) % 360; |
| valueChanged = mIsOnInnerCircle != isOnInnerCircle |
| || mSelectionDegrees[HOURS] != snapDegrees; |
| mIsOnInnerCircle = isOnInnerCircle; |
| mSelectionDegrees[HOURS] = snapDegrees; |
| type = HOURS; |
| newValue = getCurrentHour(); |
| } else { |
| final int snapDegrees = snapPrefer30s(degrees) % 360; |
| valueChanged = mSelectionDegrees[MINUTES] != snapDegrees; |
| mSelectionDegrees[MINUTES] = snapDegrees; |
| type = MINUTES; |
| newValue = getCurrentMinute(); |
| } |
| |
| if (valueChanged || forceSelection || autoAdvance) { |
| // Fire the listener even if we just need to auto-advance. |
| if (mListener != null) { |
| mListener.onValueSelected(type, newValue, autoAdvance); |
| } |
| |
| // Only provide feedback if the value actually changed. |
| if (valueChanged || forceSelection) { |
| performHapticFeedback(HapticFeedbackConstants.CLOCK_TICK); |
| invalidate(); |
| } |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public boolean dispatchHoverEvent(MotionEvent event) { |
| // First right-of-refusal goes the touch exploration helper. |
| if (mTouchHelper.dispatchHoverEvent(event)) { |
| return true; |
| } |
| return super.dispatchHoverEvent(event); |
| } |
| |
| public void setInputEnabled(boolean inputEnabled) { |
| mInputEnabled = inputEnabled; |
| invalidate(); |
| } |
| |
| @Override |
| public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex) { |
| if (!isEnabled()) { |
| return null; |
| } |
| if (event.isFromSource(InputDevice.SOURCE_MOUSE)) { |
| final int degrees = getDegreesFromXY(event.getX(), event.getY(), false); |
| if (degrees != -1) { |
| return PointerIcon.getSystemIcon(getContext(), PointerIcon.TYPE_HAND); |
| } |
| } |
| return super.onResolvePointerIcon(event, pointerIndex); |
| } |
| |
| private class RadialPickerTouchHelper extends ExploreByTouchHelper { |
| private final Rect mTempRect = new Rect(); |
| |
| private final int TYPE_HOUR = 1; |
| private final int TYPE_MINUTE = 2; |
| |
| private final int SHIFT_TYPE = 0; |
| private final int MASK_TYPE = 0xF; |
| |
| private final int SHIFT_VALUE = 8; |
| private final int MASK_VALUE = 0xFF; |
| |
| /** Increment in which virtual views are exposed for minutes. */ |
| private final int MINUTE_INCREMENT = 5; |
| |
| public RadialPickerTouchHelper() { |
| super(RadialTimePickerView.this); |
| } |
| |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| |
| info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD); |
| info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD); |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(View host, int action, Bundle arguments) { |
| if (super.performAccessibilityAction(host, action, arguments)) { |
| return true; |
| } |
| |
| switch (action) { |
| case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD: |
| adjustPicker(1); |
| return true; |
| case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD: |
| adjustPicker(-1); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private void adjustPicker(int step) { |
| final int stepSize; |
| final int initialStep; |
| final int maxValue; |
| final int minValue; |
| if (mShowHours) { |
| stepSize = 1; |
| |
| final int currentHour24 = getCurrentHour(); |
| if (mIs24HourMode) { |
| initialStep = currentHour24; |
| minValue = 0; |
| maxValue = 23; |
| } else { |
| initialStep = hour24To12(currentHour24); |
| minValue = 1; |
| maxValue = 12; |
| } |
| } else { |
| stepSize = 5; |
| initialStep = getCurrentMinute() / stepSize; |
| minValue = 0; |
| maxValue = 55; |
| } |
| |
| final int nextValue = (initialStep + step) * stepSize; |
| final int clampedValue = MathUtils.constrain(nextValue, minValue, maxValue); |
| if (mShowHours) { |
| setCurrentHour(clampedValue); |
| } else { |
| setCurrentMinute(clampedValue); |
| } |
| } |
| |
| @Override |
| protected int getVirtualViewAt(float x, float y) { |
| final int id; |
| final int degrees = getDegreesFromXY(x, y, true); |
| if (degrees != -1) { |
| final int snapDegrees = snapOnly30s(degrees, 0) % 360; |
| if (mShowHours) { |
| final boolean isOnInnerCircle = getInnerCircleFromXY(x, y); |
| final int hour24 = getHourForDegrees(snapDegrees, isOnInnerCircle); |
| final int hour = mIs24HourMode ? hour24 : hour24To12(hour24); |
| id = makeId(TYPE_HOUR, hour); |
| } else { |
| final int current = getCurrentMinute(); |
| final int touched = getMinuteForDegrees(degrees); |
| final int snapped = getMinuteForDegrees(snapDegrees); |
| |
| // If the touched minute is closer to the current minute |
| // than it is to the snapped minute, return current. |
| final int currentOffset = getCircularDiff(current, touched, MINUTES_IN_CIRCLE); |
| final int snappedOffset = getCircularDiff(snapped, touched, MINUTES_IN_CIRCLE); |
| final int minute; |
| if (currentOffset < snappedOffset) { |
| minute = current; |
| } else { |
| minute = snapped; |
| } |
| id = makeId(TYPE_MINUTE, minute); |
| } |
| } else { |
| id = INVALID_ID; |
| } |
| |
| return id; |
| } |
| |
| /** |
| * Returns the difference in degrees between two values along a circle. |
| * |
| * @param first value in the range [0,max] |
| * @param second value in the range [0,max] |
| * @param max the maximum value along the circle |
| * @return the difference in between the two values |
| */ |
| private int getCircularDiff(int first, int second, int max) { |
| final int diff = Math.abs(first - second); |
| final int midpoint = max / 2; |
| return (diff > midpoint) ? (max - diff) : diff; |
| } |
| |
| @Override |
| protected void getVisibleVirtualViews(IntArray virtualViewIds) { |
| if (mShowHours) { |
| final int min = mIs24HourMode ? 0 : 1; |
| final int max = mIs24HourMode ? 23 : 12; |
| for (int i = min; i <= max ; i++) { |
| virtualViewIds.add(makeId(TYPE_HOUR, i)); |
| } |
| } else { |
| final int current = getCurrentMinute(); |
| for (int i = 0; i < MINUTES_IN_CIRCLE; i += MINUTE_INCREMENT) { |
| virtualViewIds.add(makeId(TYPE_MINUTE, i)); |
| |
| // If the current minute falls between two increments, |
| // insert an extra node for it. |
| if (current > i && current < i + MINUTE_INCREMENT) { |
| virtualViewIds.add(makeId(TYPE_MINUTE, current)); |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected void onPopulateEventForVirtualView(int virtualViewId, AccessibilityEvent event) { |
| event.setClassName(getClass().getName()); |
| |
| final int type = getTypeFromId(virtualViewId); |
| final int value = getValueFromId(virtualViewId); |
| final CharSequence description = getVirtualViewDescription(type, value); |
| event.setContentDescription(description); |
| } |
| |
| @Override |
| protected void onPopulateNodeForVirtualView(int virtualViewId, AccessibilityNodeInfo node) { |
| node.setClassName(getClass().getName()); |
| node.addAction(AccessibilityAction.ACTION_CLICK); |
| |
| final int type = getTypeFromId(virtualViewId); |
| final int value = getValueFromId(virtualViewId); |
| final CharSequence description = getVirtualViewDescription(type, value); |
| node.setContentDescription(description); |
| |
| getBoundsForVirtualView(virtualViewId, mTempRect); |
| node.setBoundsInParent(mTempRect); |
| |
| final boolean selected = isVirtualViewSelected(type, value); |
| node.setSelected(selected); |
| |
| final int nextId = getVirtualViewIdAfter(type, value); |
| if (nextId != INVALID_ID) { |
| node.setTraversalBefore(RadialTimePickerView.this, nextId); |
| } |
| } |
| |
| private int getVirtualViewIdAfter(int type, int value) { |
| if (type == TYPE_HOUR) { |
| final int nextValue = value + 1; |
| final int max = mIs24HourMode ? 23 : 12; |
| if (nextValue <= max) { |
| return makeId(type, nextValue); |
| } |
| } else if (type == TYPE_MINUTE) { |
| final int current = getCurrentMinute(); |
| final int snapValue = value - (value % MINUTE_INCREMENT); |
| final int nextValue = snapValue + MINUTE_INCREMENT; |
| if (value < current && nextValue > current) { |
| // The current value is between two snap values. |
| return makeId(type, current); |
| } else if (nextValue < MINUTES_IN_CIRCLE) { |
| return makeId(type, nextValue); |
| } |
| } |
| return INVALID_ID; |
| } |
| |
| @Override |
| protected boolean onPerformActionForVirtualView(int virtualViewId, int action, |
| Bundle arguments) { |
| if (action == AccessibilityNodeInfo.ACTION_CLICK) { |
| final int type = getTypeFromId(virtualViewId); |
| final int value = getValueFromId(virtualViewId); |
| if (type == TYPE_HOUR) { |
| final int hour = mIs24HourMode ? value : hour12To24(value, mAmOrPm); |
| setCurrentHour(hour); |
| return true; |
| } else if (type == TYPE_MINUTE) { |
| setCurrentMinute(value); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private int hour12To24(int hour12, int amOrPm) { |
| int hour24 = hour12; |
| if (hour12 == 12) { |
| if (amOrPm == AM) { |
| hour24 = 0; |
| } |
| } else if (amOrPm == PM) { |
| hour24 += 12; |
| } |
| return hour24; |
| } |
| |
| private int hour24To12(int hour24) { |
| if (hour24 == 0) { |
| return 12; |
| } else if (hour24 > 12) { |
| return hour24 - 12; |
| } else { |
| return hour24; |
| } |
| } |
| |
| private void getBoundsForVirtualView(int virtualViewId, Rect bounds) { |
| final float radius; |
| final int type = getTypeFromId(virtualViewId); |
| final int value = getValueFromId(virtualViewId); |
| final float centerRadius; |
| final float degrees; |
| if (type == TYPE_HOUR) { |
| final boolean innerCircle = getInnerCircleForHour(value); |
| if (innerCircle) { |
| centerRadius = mCircleRadius - mTextInset[HOURS_INNER]; |
| radius = mSelectorRadius; |
| } else { |
| centerRadius = mCircleRadius - mTextInset[HOURS]; |
| radius = mSelectorRadius; |
| } |
| |
| degrees = getDegreesForHour(value); |
| } else if (type == TYPE_MINUTE) { |
| centerRadius = mCircleRadius - mTextInset[MINUTES]; |
| degrees = getDegreesForMinute(value); |
| radius = mSelectorRadius; |
| } else { |
| // This should never happen. |
| centerRadius = 0; |
| degrees = 0; |
| radius = 0; |
| } |
| |
| final double radians = Math.toRadians(degrees); |
| final float xCenter = mXCenter + centerRadius * (float) Math.sin(radians); |
| final float yCenter = mYCenter - centerRadius * (float) Math.cos(radians); |
| |
| bounds.set((int) (xCenter - radius), (int) (yCenter - radius), |
| (int) (xCenter + radius), (int) (yCenter + radius)); |
| } |
| |
| private CharSequence getVirtualViewDescription(int type, int value) { |
| final CharSequence description; |
| if (type == TYPE_HOUR || type == TYPE_MINUTE) { |
| description = Integer.toString(value); |
| } else { |
| description = null; |
| } |
| return description; |
| } |
| |
| private boolean isVirtualViewSelected(int type, int value) { |
| final boolean selected; |
| if (type == TYPE_HOUR) { |
| selected = getCurrentHour() == value; |
| } else if (type == TYPE_MINUTE) { |
| selected = getCurrentMinute() == value; |
| } else { |
| selected = false; |
| } |
| return selected; |
| } |
| |
| private int makeId(int type, int value) { |
| return type << SHIFT_TYPE | value << SHIFT_VALUE; |
| } |
| |
| private int getTypeFromId(int id) { |
| return id >>> SHIFT_TYPE & MASK_TYPE; |
| } |
| |
| private int getValueFromId(int id) { |
| return id >>> SHIFT_VALUE & MASK_VALUE; |
| } |
| } |
| } |
