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1147 行
52 KiB
1147 行
52 KiB
using System;
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using System.Collections.Generic;
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using Unity.UIWidgets.animation;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.painting;
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using Unity.UIWidgets.rendering;
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using Unity.UIWidgets.scheduler;
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using Unity.UIWidgets.ui;
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using Unity.UIWidgets.widgets;
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using TextStyle = Unity.UIWidgets.painting.TextStyle;
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namespace Unity.UIWidgets.cupertino {
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class CupertinoDatePickerUtils {
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public const float _kItemExtent = 32.0f;
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public const float _kPickerWidth = 330.0f;
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public const bool _kUseMagnifier = true;
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public const float _kMagnification = 1.05f;
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public const float _kDatePickerPadSize = 12.0f;
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public static Color _kBackgroundColor = CupertinoColors.white;
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public static TextStyle _kDefaultPickerTextStyle = new TextStyle(
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letterSpacing: -0.83f
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);
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public delegate Widget listGenerateDelegate(int index);
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public static List<Widget> listGenerate(int count, listGenerateDelegate func) {
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var list = new List<Widget>();
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for (int i = 0; i < count; i++) {
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list.Add(func(i));
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}
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return list;
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}
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}
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public class _DatePickerLayoutDelegate : MultiChildLayoutDelegate {
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public _DatePickerLayoutDelegate(
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List<float> columnWidths,
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int textDirectionFactor
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) {
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D.assert(columnWidths != null);
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this.columnWidths = columnWidths;
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this.textDirectionFactor = textDirectionFactor;
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}
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public readonly List<float> columnWidths;
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public readonly int textDirectionFactor;
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public override void performLayout(Size size) {
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float remainingWidth = size.width;
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for (int i = 0; i < this.columnWidths.Count; i++) {
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remainingWidth -= this.columnWidths[i] + CupertinoDatePickerUtils._kDatePickerPadSize * 2;
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}
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float currentHorizontalOffset = 0.0f;
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for (int i = 0; i < this.columnWidths.Count; i++) {
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int index = this.textDirectionFactor == 1 ? i : this.columnWidths.Count - i - 1;
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float childWidth = this.columnWidths[index] + CupertinoDatePickerUtils._kDatePickerPadSize * 2;
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if (index == 0 || index == this.columnWidths.Count - 1) {
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childWidth += remainingWidth / 2;
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}
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this.layoutChild(index, BoxConstraints.tight(new Size(childWidth, size.height)));
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this.positionChild(index, new Offset(currentHorizontalOffset, 0.0f));
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currentHorizontalOffset += childWidth;
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}
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}
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public override bool shouldRelayout(MultiChildLayoutDelegate oldDelegate) {
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return this.columnWidths != ((_DatePickerLayoutDelegate) oldDelegate).columnWidths
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|| this.textDirectionFactor != ((_DatePickerLayoutDelegate) oldDelegate).textDirectionFactor;
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}
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}
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public enum CupertinoDatePickerMode {
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time,
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date,
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dateAndTime,
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}
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enum _PickerColumnType {
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dayOfMonth,
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month,
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year,
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date,
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hour,
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minute,
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dayPeriod,
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}
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public class CupertinoDatePicker : StatefulWidget {
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public CupertinoDatePicker(
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ValueChanged<DateTime> onDateTimeChanged,
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CupertinoDatePickerMode mode = CupertinoDatePickerMode.dateAndTime,
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DateTime? initialDateTime = null,
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DateTime? minimumDate = null,
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DateTime? maximumDate = null,
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int minimumYear = 1,
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int? maximumYear = null,
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int minuteInterval = 1,
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bool use24hFormat = false
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) {
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this.initialDateTime = initialDateTime ?? DateTime.Now;
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D.assert(onDateTimeChanged != null);
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D.assert(
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minuteInterval > 0 && 60 % minuteInterval == 0,
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() => "minute interval is not a positive integer factor of 60"
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);
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D.assert(this.initialDateTime != null);
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D.assert(
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mode != CupertinoDatePickerMode.dateAndTime || minimumDate == null ||
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!(this.initialDateTime < minimumDate),
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() => "initial date is before minimum date"
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);
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D.assert(
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mode != CupertinoDatePickerMode.dateAndTime || maximumDate == null ||
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!(this.initialDateTime > maximumDate),
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() => "initial date is after maximum date"
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);
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D.assert(
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mode != CupertinoDatePickerMode.date || (minimumYear >= 1 && this.initialDateTime.Year >= minimumYear),
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() => "initial year is not greater than minimum year, or mininum year is not positive"
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);
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D.assert(
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mode != CupertinoDatePickerMode.date || maximumYear == null || this.initialDateTime.Year <= maximumYear,
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() => "initial year is not smaller than maximum year"
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);
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D.assert(
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this.initialDateTime.Minute % minuteInterval == 0,
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() => "initial minute is not divisible by minute interval"
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);
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this.onDateTimeChanged = onDateTimeChanged;
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this.mode = mode;
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this.minimumDate = minimumDate;
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this.maximumDate = maximumDate;
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this.minimumYear = minimumYear;
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this.maximumYear = maximumYear;
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this.minuteInterval = minuteInterval;
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this.use24hFormat = use24hFormat;
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}
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public readonly CupertinoDatePickerMode mode;
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public readonly DateTime initialDateTime;
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public readonly DateTime? minimumDate;
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public readonly DateTime? maximumDate;
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public readonly int minimumYear;
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public readonly int? maximumYear;
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public readonly int minuteInterval;
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public readonly bool use24hFormat;
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public readonly ValueChanged<DateTime> onDateTimeChanged;
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public override State createState() {
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if (this.mode == CupertinoDatePickerMode.time || this.mode == CupertinoDatePickerMode.dateAndTime) {
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return new _CupertinoDatePickerDateTimeState();
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}
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else {
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return new _CupertinoDatePickerDateState();
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}
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}
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internal static float _getColumnWidth(
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_PickerColumnType columnType,
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CupertinoLocalizations localizations,
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BuildContext context
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) {
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string longestText = "";
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switch (columnType) {
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case _PickerColumnType.date:
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for (int i = 1; i <= 12; i++) {
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string date =
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localizations.datePickerMediumDate(new DateTime(2018, i, 25));
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if (longestText.Length < date.Length) {
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longestText = date;
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}
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}
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break;
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case _PickerColumnType.hour:
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for (int i = 0; i < 24; i++) {
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string hour = localizations.datePickerHour(i);
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if (longestText.Length < hour.Length) {
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longestText = hour;
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}
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}
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break;
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case _PickerColumnType.minute:
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for (int i = 0; i < 60; i++) {
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string minute = localizations.datePickerMinute(i);
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if (longestText.Length < minute.Length) {
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longestText = minute;
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}
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}
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break;
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case _PickerColumnType.dayPeriod:
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longestText =
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localizations.anteMeridiemAbbreviation.Length > localizations.postMeridiemAbbreviation.Length
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? localizations.anteMeridiemAbbreviation
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: localizations.postMeridiemAbbreviation;
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break;
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case _PickerColumnType.dayOfMonth:
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for (int i = 1; i <= 31; i++) {
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string dayOfMonth = localizations.datePickerDayOfMonth(i);
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if (longestText.Length < dayOfMonth.Length) {
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longestText = dayOfMonth;
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}
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}
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break;
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case _PickerColumnType.month:
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for (int i = 1; i <= 12; i++) {
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string month = localizations.datePickerMonth(i);
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if (longestText.Length < month.Length) {
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longestText = month;
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}
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}
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break;
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case _PickerColumnType.year:
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longestText = localizations.datePickerYear(2018);
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break;
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}
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D.assert(longestText != "", () => "column type is not appropriate");
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TextPainter painter = new TextPainter(
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text: new TextSpan(
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style: DefaultTextStyle.of(context).style,
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text: longestText
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),
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textDirection: Directionality.of(context)
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);
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painter.layout();
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return painter.maxIntrinsicWidth;
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}
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}
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delegate Widget _ColumnBuilder(float offAxisFraction, TransitionBuilder itemPositioningBuilder);
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class _CupertinoDatePickerDateTimeState : State<CupertinoDatePicker> {
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public int textDirectionFactor;
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public CupertinoLocalizations localizations;
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public Alignment alignCenterLeft;
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public Alignment alignCenterRight;
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public DateTime initialDateTime;
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public int selectedDayFromInitial;
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public int selectedHour;
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public int previousHourIndex;
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public int selectedMinute;
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public int selectedAmPm;
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public FixedExtentScrollController amPmController;
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public static Dictionary<int, float> estimatedColumnWidths = new Dictionary<int, float>();
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public override void initState() {
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base.initState();
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this.initialDateTime = this.widget.initialDateTime;
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this.selectedDayFromInitial = 0;
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this.selectedHour = this.widget.initialDateTime.Hour;
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this.selectedMinute = this.widget.initialDateTime.Minute;
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this.selectedAmPm = 0;
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if (!this.widget.use24hFormat) {
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this.selectedAmPm = this.selectedHour / 12;
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this.selectedHour = this.selectedHour % 12;
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if (this.selectedHour == 0) {
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this.selectedHour = 12;
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}
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this.amPmController = new FixedExtentScrollController(initialItem: this.selectedAmPm);
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}
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this.previousHourIndex = this.selectedHour;
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}
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public override void didUpdateWidget(StatefulWidget oldWidget) {
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base.didUpdateWidget(oldWidget);
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D.assert(
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((CupertinoDatePicker) oldWidget).mode == this.widget.mode,
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() => "The CupertinoDatePicker's mode cannot change once it's built"
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);
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}
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public override void didChangeDependencies() {
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base.didChangeDependencies();
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this.textDirectionFactor = Directionality.of(this.context) == TextDirection.ltr ? 1 : -1;
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this.localizations = CupertinoLocalizations.of(this.context);
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this.alignCenterLeft = this.textDirectionFactor == 1 ? Alignment.centerLeft : Alignment.centerRight;
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this.alignCenterRight = this.textDirectionFactor == 1 ? Alignment.centerRight : Alignment.centerLeft;
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estimatedColumnWidths.Clear();
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}
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float _getEstimatedColumnWidth(_PickerColumnType columnType) {
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if (!estimatedColumnWidths.TryGetValue((int) columnType, out float _)) {
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estimatedColumnWidths[(int) columnType] =
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CupertinoDatePicker._getColumnWidth(columnType, this.localizations, this.context);
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}
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return estimatedColumnWidths[(int) columnType];
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}
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DateTime _getDateTime() {
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DateTime date = new DateTime(this.initialDateTime.Year, this.initialDateTime.Month, this.initialDateTime.Day
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).Add(new TimeSpan(this.selectedDayFromInitial, 0, 0, 0));
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return new DateTime(
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date.Year,
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date.Month,
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date.Day,
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this.widget.use24hFormat ? this.selectedHour : this.selectedHour % 12 + this.selectedAmPm * 12,
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this.selectedMinute,
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0
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);
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}
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Widget _buildMediumDatePicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
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return CupertinoPicker.builder(
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scrollController: new FixedExtentScrollController(initialItem: this.selectedDayFromInitial),
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offAxisFraction: offAxisFraction,
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itemExtent: CupertinoDatePickerUtils._kItemExtent,
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useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
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magnification: CupertinoDatePickerUtils._kMagnification,
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backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
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onSelectedItemChanged: (int index) => {
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this.selectedDayFromInitial = index;
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this.widget.onDateTimeChanged(this._getDateTime());
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},
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itemBuilder: (BuildContext context, int index) => {
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DateTime dateTime = new DateTime(this.initialDateTime.Year, this.initialDateTime.Month,
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this.initialDateTime.Day
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).Add(new TimeSpan(index, 0, 0, 0));
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if (this.widget.minimumDate != null && dateTime < this.widget.minimumDate) {
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return null;
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}
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if (this.widget.maximumDate != null && dateTime > this.widget.maximumDate) {
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return null;
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}
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return itemPositioningBuilder(
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context,
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new Text(this.localizations.datePickerMediumDate(dateTime))
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);
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}
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);
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}
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Widget _buildHourPicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
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return new CupertinoPicker(
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scrollController: new FixedExtentScrollController(initialItem: this.selectedHour),
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offAxisFraction: offAxisFraction,
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itemExtent: CupertinoDatePickerUtils._kItemExtent,
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useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
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magnification: CupertinoDatePickerUtils._kMagnification,
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backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
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onSelectedItemChanged: (int index) => {
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if (this.widget.use24hFormat) {
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this.selectedHour = index;
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this.widget.onDateTimeChanged(this._getDateTime());
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}
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else {
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this.selectedHour = index % 12;
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bool wasAm = this.previousHourIndex >= 0 && this.previousHourIndex <= 11;
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bool isAm = index >= 0 && index <= 11;
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if (wasAm != isAm) {
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this.amPmController.animateToItem(
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1 - this.amPmController.selectedItem,
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duration: new TimeSpan(0, 0, 0, 0, 300),
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curve:
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Curves.easeOut
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);
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}
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else {
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this.widget.onDateTimeChanged(this._getDateTime());
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}
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}
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this.previousHourIndex = index;
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},
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children: CupertinoDatePickerUtils.listGenerate(24, (index) => {
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int hour = index;
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if (!this.widget.use24hFormat) {
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hour = hour % 12 == 0 ? 12 : hour % 12;
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}
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return itemPositioningBuilder(this.context,
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new Text(this.localizations.datePickerHour(hour)
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)
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);
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}),
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looping: true
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);
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}
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Widget _buildMinutePicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
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return new CupertinoPicker(
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scrollController: new FixedExtentScrollController(
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initialItem: this.selectedMinute / this.widget.minuteInterval),
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offAxisFraction: offAxisFraction,
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itemExtent: CupertinoDatePickerUtils._kItemExtent,
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useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
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magnification: CupertinoDatePickerUtils._kMagnification,
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backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
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onSelectedItemChanged: (int index) => {
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this.selectedMinute = index * this.widget.minuteInterval;
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this.widget.onDateTimeChanged(this._getDateTime());
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},
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children: CupertinoDatePickerUtils.listGenerate(60 / this.widget.minuteInterval, (int index) => {
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int minute = index * this.widget.minuteInterval;
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return itemPositioningBuilder(this.context,
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new Text(this.localizations.datePickerMinute(minute)
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)
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);
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}),
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looping: true
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);
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}
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Widget _buildAmPmPicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
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return new CupertinoPicker(
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scrollController: this.amPmController,
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offAxisFraction: offAxisFraction,
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itemExtent: CupertinoDatePickerUtils._kItemExtent,
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useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
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magnification: CupertinoDatePickerUtils._kMagnification,
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backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
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onSelectedItemChanged: (int index) => {
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this.selectedAmPm = index;
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this.widget.onDateTimeChanged(this._getDateTime());
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},
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children: CupertinoDatePickerUtils.listGenerate(2, (int index) => {
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return itemPositioningBuilder(this.context,
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new Text(
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index == 0
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? this.localizations.anteMeridiemAbbreviation
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: this.localizations.postMeridiemAbbreviation
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)
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);
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})
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);
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}
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public override Widget build(BuildContext context) {
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List<float> columnWidths = new List<float>() {
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this._getEstimatedColumnWidth(_PickerColumnType.hour),
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this._getEstimatedColumnWidth(_PickerColumnType.minute),
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};
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List<_ColumnBuilder> pickerBuilders = new List<_ColumnBuilder> {
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this._buildHourPicker, this._buildMinutePicker,
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};
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if (!this.widget.use24hFormat) {
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if (this.localizations.datePickerDateTimeOrder == DatePickerDateTimeOrder.date_time_dayPeriod
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|| this.localizations.datePickerDateTimeOrder == DatePickerDateTimeOrder.time_dayPeriod_date) {
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pickerBuilders.Add(this._buildAmPmPicker);
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columnWidths.Add(this._getEstimatedColumnWidth(_PickerColumnType.dayPeriod));
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}
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else {
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pickerBuilders.Insert(0, this._buildAmPmPicker);
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columnWidths.Insert(0, this._getEstimatedColumnWidth(_PickerColumnType.dayPeriod));
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}
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}
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if (this.widget.mode == CupertinoDatePickerMode.dateAndTime) {
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if (this.localizations.datePickerDateTimeOrder == DatePickerDateTimeOrder.time_dayPeriod_date
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|| this.localizations.datePickerDateTimeOrder == DatePickerDateTimeOrder.dayPeriod_time_date) {
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pickerBuilders.Add(this._buildMediumDatePicker);
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columnWidths.Add(this._getEstimatedColumnWidth(_PickerColumnType.date));
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}
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else {
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pickerBuilders.Insert(0, this._buildMediumDatePicker);
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columnWidths.Insert(0, this._getEstimatedColumnWidth(_PickerColumnType.date));
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}
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}
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List<Widget> pickers = new List<Widget>();
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for (int i = 0; i < columnWidths.Count; i++) {
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var _i = i;
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float offAxisFraction = 0.0f;
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if (_i == 0) {
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offAxisFraction = -0.5f * this.textDirectionFactor;
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}
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else if (_i >= 2 || columnWidths.Count == 2) {
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offAxisFraction = 0.5f * this.textDirectionFactor;
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}
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EdgeInsets padding = EdgeInsets.only(right: CupertinoDatePickerUtils._kDatePickerPadSize);
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if (_i == columnWidths.Count - 1) {
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padding = padding.flipped;
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}
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if (this.textDirectionFactor == -1) {
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padding = padding.flipped;
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}
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pickers.Add(new LayoutId(
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id: _i,
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child: pickerBuilders[_i](
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offAxisFraction,
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|
(BuildContext _context, Widget child) => {
|
|
return new Container(
|
|
alignment: _i == columnWidths.Count - 1
|
|
? this.alignCenterLeft
|
|
: this.alignCenterRight,
|
|
padding: padding,
|
|
child: new Container(
|
|
alignment: _i == columnWidths.Count - 1
|
|
? this.alignCenterLeft
|
|
: this.alignCenterRight,
|
|
width: _i == 0 || _i == columnWidths.Count - 1
|
|
? (float?) null
|
|
: columnWidths[_i] + CupertinoDatePickerUtils._kDatePickerPadSize,
|
|
child: child
|
|
)
|
|
);
|
|
}
|
|
)
|
|
));
|
|
}
|
|
|
|
return new MediaQuery(
|
|
data: new MediaQueryData(textScaleFactor: 1.0f),
|
|
child: DefaultTextStyle.merge(
|
|
style: CupertinoDatePickerUtils._kDefaultPickerTextStyle,
|
|
child: new CustomMultiChildLayout(
|
|
layoutDelegate: new _DatePickerLayoutDelegate(
|
|
columnWidths: columnWidths,
|
|
textDirectionFactor: this.textDirectionFactor
|
|
),
|
|
children: pickers
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
class _CupertinoDatePickerDateState : State<CupertinoDatePicker> {
|
|
int textDirectionFactor;
|
|
CupertinoLocalizations localizations;
|
|
|
|
Alignment alignCenterLeft;
|
|
Alignment alignCenterRight;
|
|
|
|
int selectedDay;
|
|
int selectedMonth;
|
|
int selectedYear;
|
|
FixedExtentScrollController dayController;
|
|
|
|
Dictionary<int, float> estimatedColumnWidths = new Dictionary<int, float>();
|
|
|
|
public override void initState() {
|
|
base.initState();
|
|
this.selectedDay = this.widget.initialDateTime.Day;
|
|
this.selectedMonth = this.widget.initialDateTime.Month;
|
|
this.selectedYear = this.widget.initialDateTime.Year;
|
|
this.dayController = new FixedExtentScrollController(initialItem: this.selectedDay - 1);
|
|
}
|
|
|
|
public override void didChangeDependencies() {
|
|
base.didChangeDependencies();
|
|
this.textDirectionFactor = Directionality.of(this.context) == TextDirection.ltr ? 1 : -1;
|
|
this.localizations = CupertinoLocalizations.of(this.context);
|
|
this.alignCenterLeft = this.textDirectionFactor == 1 ? Alignment.centerLeft : Alignment.centerRight;
|
|
this.alignCenterRight = this.textDirectionFactor == 1 ? Alignment.centerRight : Alignment.centerLeft;
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.dayOfMonth] = CupertinoDatePicker._getColumnWidth(
|
|
_PickerColumnType.dayOfMonth, this.localizations, this.context);
|
|
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.month] = CupertinoDatePicker._getColumnWidth(
|
|
_PickerColumnType.month, this.localizations, this.context);
|
|
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.year] = CupertinoDatePicker._getColumnWidth(
|
|
_PickerColumnType.year, this.localizations, this.context);
|
|
}
|
|
|
|
Widget _buildDayPicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
|
|
int daysInCurrentMonth = DateTime.DaysInMonth(this.selectedYear, this.selectedMonth);
|
|
return new CupertinoPicker(
|
|
scrollController: this.dayController,
|
|
offAxisFraction: offAxisFraction,
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
|
|
magnification: CupertinoDatePickerUtils._kMagnification,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.selectedDay = index + 1;
|
|
var validDay = this.selectedDay;
|
|
if (DateTime.DaysInMonth(this.selectedYear, this.selectedMonth) < this.selectedDay) {
|
|
validDay -= DateTime.DaysInMonth(this.selectedYear, this.selectedMonth);
|
|
}
|
|
|
|
if (this.selectedDay == validDay) {
|
|
this.widget.onDateTimeChanged(new DateTime(this.selectedYear, this.selectedMonth,
|
|
this.selectedDay));
|
|
}
|
|
},
|
|
children: CupertinoDatePickerUtils.listGenerate(31, (int index) => {
|
|
TextStyle disableTextStyle = null;
|
|
|
|
if (index >= daysInCurrentMonth) {
|
|
disableTextStyle = new TextStyle(color: CupertinoColors.inactiveGray);
|
|
}
|
|
|
|
return itemPositioningBuilder(this.context,
|
|
new Text(this.localizations.datePickerDayOfMonth(index + 1),
|
|
style: disableTextStyle
|
|
)
|
|
);
|
|
}),
|
|
looping: true
|
|
);
|
|
}
|
|
|
|
Widget _buildMonthPicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
|
|
return new CupertinoPicker(
|
|
scrollController: new FixedExtentScrollController(initialItem: this.selectedMonth - 1),
|
|
offAxisFraction: offAxisFraction,
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
|
|
magnification: CupertinoDatePickerUtils._kMagnification,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.selectedMonth = index + 1;
|
|
var validDay = this.selectedDay;
|
|
if (DateTime.DaysInMonth(this.selectedYear, this.selectedMonth) < this.selectedDay) {
|
|
validDay -= DateTime.DaysInMonth(this.selectedYear, this.selectedMonth);
|
|
}
|
|
|
|
if (this.selectedDay == validDay) {
|
|
this.widget.onDateTimeChanged(new DateTime(this.selectedYear, this.selectedMonth,
|
|
this.selectedDay));
|
|
}
|
|
},
|
|
children: CupertinoDatePickerUtils.listGenerate(12, (int index) => {
|
|
return itemPositioningBuilder(this.context,
|
|
new Text(this.localizations.datePickerMonth(index + 1))
|
|
);
|
|
}),
|
|
looping: true
|
|
);
|
|
}
|
|
|
|
Widget _buildYearPicker(float offAxisFraction, TransitionBuilder itemPositioningBuilder) {
|
|
return CupertinoPicker.builder(
|
|
scrollController: new FixedExtentScrollController(initialItem: this.selectedYear),
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
offAxisFraction: offAxisFraction,
|
|
useMagnifier: CupertinoDatePickerUtils._kUseMagnifier,
|
|
magnification: CupertinoDatePickerUtils._kMagnification,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.selectedYear = index;
|
|
if (new DateTime(this.selectedYear, this.selectedMonth, this.selectedDay).Day == this.selectedDay) {
|
|
this.widget.onDateTimeChanged(new DateTime(this.selectedYear, this.selectedMonth,
|
|
this.selectedDay));
|
|
}
|
|
},
|
|
itemBuilder: (BuildContext context, int index) => {
|
|
if (index < this.widget.minimumYear) {
|
|
return null;
|
|
}
|
|
|
|
if (this.widget.maximumYear != null && index > this.widget.maximumYear) {
|
|
return null;
|
|
}
|
|
|
|
return itemPositioningBuilder(
|
|
context,
|
|
new Text(this.localizations.datePickerYear(index))
|
|
);
|
|
}
|
|
);
|
|
}
|
|
|
|
bool _keepInValidRange(ScrollEndNotification notification) {
|
|
var desiredDay = this.selectedDay;
|
|
if (DateTime.DaysInMonth(this.selectedYear, this.selectedMonth) < this.selectedDay) {
|
|
desiredDay -= DateTime.DaysInMonth(this.selectedYear, this.selectedMonth);
|
|
}
|
|
|
|
if (desiredDay != this.selectedDay) {
|
|
SchedulerBinding.instance.addPostFrameCallback((TimeSpan timestamp) => {
|
|
this.dayController.animateToItem(this.dayController.selectedItem - desiredDay,
|
|
duration: new TimeSpan(0, 0, 0, 0, 200),
|
|
curve:
|
|
Curves.easeOut
|
|
);
|
|
});
|
|
}
|
|
|
|
this.setState(() => { });
|
|
return false;
|
|
}
|
|
|
|
public override Widget build(BuildContext context) {
|
|
List<_ColumnBuilder> pickerBuilders = new List<_ColumnBuilder>();
|
|
List<float> columnWidths = new List<float>();
|
|
switch (this.localizations.datePickerDateOrder) {
|
|
case DatePickerDateOrder.mdy:
|
|
pickerBuilders = new List<_ColumnBuilder>()
|
|
{this._buildMonthPicker, this._buildDayPicker, this._buildYearPicker};
|
|
columnWidths = new List<float>() {
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.month],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.dayOfMonth],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.year]
|
|
};
|
|
break;
|
|
case DatePickerDateOrder.dmy:
|
|
pickerBuilders = new List<_ColumnBuilder>
|
|
{this._buildDayPicker, this._buildMonthPicker, this._buildYearPicker};
|
|
columnWidths = new List<float> {
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.dayOfMonth],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.month],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.year]
|
|
};
|
|
break;
|
|
case DatePickerDateOrder.ymd:
|
|
pickerBuilders = new List<_ColumnBuilder>
|
|
{this._buildYearPicker, this._buildMonthPicker, this._buildDayPicker};
|
|
columnWidths = new List<float>() {
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.year],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.month],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.dayOfMonth]
|
|
};
|
|
break;
|
|
case DatePickerDateOrder.ydm:
|
|
pickerBuilders = new List<_ColumnBuilder>
|
|
{this._buildYearPicker, this._buildDayPicker, this._buildMonthPicker};
|
|
columnWidths = new List<float> {
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.year],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.dayOfMonth],
|
|
this.estimatedColumnWidths[(int) _PickerColumnType.month]
|
|
};
|
|
break;
|
|
default:
|
|
D.assert(false, () => "date order is not specified");
|
|
break;
|
|
}
|
|
|
|
List<Widget> pickers = new List<Widget>();
|
|
for (int i = 0; i < columnWidths.Count; i++) {
|
|
var _i = i;
|
|
float offAxisFraction = (_i - 1) * 0.3f * this.textDirectionFactor;
|
|
EdgeInsets padding = EdgeInsets.only(right: CupertinoDatePickerUtils._kDatePickerPadSize);
|
|
if (this.textDirectionFactor == -1) {
|
|
padding = EdgeInsets.only(left: CupertinoDatePickerUtils._kDatePickerPadSize);
|
|
}
|
|
|
|
pickers.Add(new LayoutId(
|
|
id: _i,
|
|
child: pickerBuilders[_i](
|
|
offAxisFraction,
|
|
(BuildContext _context, Widget child) => {
|
|
return new Container(
|
|
alignment: _i == columnWidths.Count - 1
|
|
? this.alignCenterLeft
|
|
: this.alignCenterRight,
|
|
padding: _i == 0 ? null : padding,
|
|
child: new Container(
|
|
alignment: _i == 0 ? this.alignCenterLeft : this.alignCenterRight,
|
|
width: columnWidths[_i] + CupertinoDatePickerUtils._kDatePickerPadSize,
|
|
child: child
|
|
)
|
|
);
|
|
}
|
|
)
|
|
));
|
|
}
|
|
|
|
return new MediaQuery(
|
|
data: new MediaQueryData(textScaleFactor: 1.0f),
|
|
child: new NotificationListener<ScrollEndNotification>(
|
|
onNotification: this._keepInValidRange,
|
|
child: DefaultTextStyle.merge(
|
|
style: CupertinoDatePickerUtils._kDefaultPickerTextStyle,
|
|
child: new CustomMultiChildLayout(
|
|
layoutDelegate: new _DatePickerLayoutDelegate(
|
|
columnWidths: columnWidths,
|
|
textDirectionFactor: this.textDirectionFactor
|
|
),
|
|
children:
|
|
pickers
|
|
)
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
public enum CupertinoTimerPickerMode {
|
|
hm,
|
|
ms,
|
|
hms,
|
|
}
|
|
|
|
public class CupertinoTimerPicker : StatefulWidget {
|
|
public CupertinoTimerPicker(
|
|
ValueChanged<TimeSpan> onTimerDurationChanged,
|
|
CupertinoTimerPickerMode mode = CupertinoTimerPickerMode.hms,
|
|
TimeSpan initialTimerDuration = new TimeSpan(),
|
|
int minuteInterval = 1,
|
|
int secondInterval = 1
|
|
) {
|
|
D.assert(onTimerDurationChanged != null);
|
|
D.assert(initialTimerDuration >= TimeSpan.Zero);
|
|
D.assert(initialTimerDuration < new TimeSpan(1, 0, 0, 0));
|
|
D.assert(minuteInterval > 0 && 60 % minuteInterval == 0);
|
|
D.assert(secondInterval > 0 && 60 % secondInterval == 0);
|
|
D.assert((int) initialTimerDuration.TotalMinutes % minuteInterval == 0);
|
|
D.assert((int) initialTimerDuration.TotalSeconds % secondInterval == 0);
|
|
this.onTimerDurationChanged = onTimerDurationChanged;
|
|
this.mode = mode;
|
|
this.initialTimerDuration = initialTimerDuration;
|
|
this.minuteInterval = minuteInterval;
|
|
this.secondInterval = secondInterval;
|
|
}
|
|
|
|
public readonly CupertinoTimerPickerMode mode;
|
|
public readonly TimeSpan initialTimerDuration;
|
|
public readonly int minuteInterval;
|
|
public readonly int secondInterval;
|
|
public readonly ValueChanged<TimeSpan> onTimerDurationChanged;
|
|
|
|
public override State createState() {
|
|
return new _CupertinoTimerPickerState();
|
|
}
|
|
}
|
|
|
|
class _CupertinoTimerPickerState : State<CupertinoTimerPicker> {
|
|
int textDirectionFactor;
|
|
CupertinoLocalizations localizations;
|
|
Alignment alignCenterLeft;
|
|
Alignment alignCenterRight;
|
|
int selectedHour;
|
|
int selectedMinute;
|
|
int selectedSecond;
|
|
|
|
public override void initState() {
|
|
base.initState();
|
|
this.selectedMinute = (int) this.widget.initialTimerDuration.TotalMinutes % 60;
|
|
if (this.widget.mode != CupertinoTimerPickerMode.ms) {
|
|
this.selectedHour = (int) this.widget.initialTimerDuration.TotalHours;
|
|
}
|
|
|
|
if (this.widget.mode != CupertinoTimerPickerMode.hm) {
|
|
this.selectedSecond = (int) this.widget.initialTimerDuration.TotalSeconds % 60;
|
|
}
|
|
}
|
|
|
|
Widget _buildLabel(string text) {
|
|
return new Text(
|
|
text,
|
|
textScaleFactor: 0.8f,
|
|
style: new TextStyle(fontWeight: FontWeight.w600)
|
|
);
|
|
}
|
|
|
|
public override void didChangeDependencies() {
|
|
base.didChangeDependencies();
|
|
this.textDirectionFactor = Directionality.of(this.context) == TextDirection.ltr ? 1 : -1;
|
|
this.localizations = CupertinoLocalizations.of(this.context);
|
|
this.alignCenterLeft = this.textDirectionFactor == 1 ? Alignment.centerLeft : Alignment.centerRight;
|
|
this.alignCenterRight = this.textDirectionFactor == 1 ? Alignment.centerRight : Alignment.centerLeft;
|
|
}
|
|
|
|
Widget _buildHourPicker() {
|
|
return new CupertinoPicker(
|
|
scrollController: new FixedExtentScrollController(initialItem: this.selectedHour),
|
|
offAxisFraction: -0.5f * this.textDirectionFactor,
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.setState(() => {
|
|
this.selectedHour = index;
|
|
this.widget.onTimerDurationChanged(
|
|
new TimeSpan(
|
|
hours: this.selectedHour,
|
|
minutes: this.selectedMinute,
|
|
seconds: this.selectedSecond));
|
|
});
|
|
},
|
|
children: CupertinoDatePickerUtils.listGenerate(24, (int index) => {
|
|
float hourLabelWidth = this.widget.mode == CupertinoTimerPickerMode.hm
|
|
? CupertinoDatePickerUtils._kPickerWidth / 4
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6;
|
|
string semanticsLabel = this.textDirectionFactor == 1
|
|
? this.localizations.timerPickerHour(index) + this.localizations.timerPickerHourLabel(index)
|
|
: this.localizations.timerPickerHourLabel(index) + this.localizations.timerPickerHour(index);
|
|
return new Container(
|
|
alignment: this.alignCenterRight,
|
|
padding: this.textDirectionFactor == 1
|
|
? EdgeInsets.only(right: hourLabelWidth)
|
|
: EdgeInsets.only(left: hourLabelWidth),
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child: new Text(this.localizations.timerPickerHour(index))
|
|
)
|
|
);
|
|
})
|
|
);
|
|
}
|
|
|
|
Widget _buildHourColumn() {
|
|
Widget hourLabel = new IgnorePointer(
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
width: this.widget.mode == CupertinoTimerPickerMode.hm
|
|
? CupertinoDatePickerUtils._kPickerWidth / 4
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6,
|
|
child: this._buildLabel(this.localizations.timerPickerHourLabel(this.selectedHour))
|
|
)
|
|
)
|
|
);
|
|
return new Stack(
|
|
children: new List<Widget> {
|
|
this._buildHourPicker(),
|
|
hourLabel
|
|
}
|
|
);
|
|
}
|
|
|
|
Widget _buildMinutePicker() {
|
|
float offAxisFraction;
|
|
if (this.widget.mode == CupertinoTimerPickerMode.hm) {
|
|
offAxisFraction = 0.5f * this.textDirectionFactor;
|
|
}
|
|
else if (this.widget.mode == CupertinoTimerPickerMode.hms) {
|
|
offAxisFraction = 0.0f;
|
|
}
|
|
else {
|
|
offAxisFraction = -0.5f * this.textDirectionFactor;
|
|
}
|
|
|
|
return new CupertinoPicker(
|
|
scrollController: new FixedExtentScrollController(
|
|
initialItem: this.selectedMinute / this.widget.minuteInterval
|
|
),
|
|
offAxisFraction: offAxisFraction,
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.setState(() => {
|
|
this.selectedMinute = index * this.widget.minuteInterval;
|
|
this.widget.onTimerDurationChanged(
|
|
new TimeSpan(
|
|
hours: this.selectedHour,
|
|
minutes: this.selectedMinute,
|
|
seconds: this.selectedSecond));
|
|
});
|
|
},
|
|
children: CupertinoDatePickerUtils.listGenerate(60 / this.widget.minuteInterval, (int index) => {
|
|
int minute = index * this.widget.minuteInterval;
|
|
string semanticsLabel = this.textDirectionFactor == 1
|
|
? this.localizations.timerPickerMinute(minute) +
|
|
this.localizations.timerPickerMinuteLabel(minute)
|
|
: this.localizations.timerPickerMinuteLabel(minute) +
|
|
this.localizations.timerPickerMinute(minute);
|
|
if (this.widget.mode == CupertinoTimerPickerMode.ms) {
|
|
return new Container(
|
|
alignment: this.alignCenterRight,
|
|
padding: this.textDirectionFactor == 1
|
|
? EdgeInsets.only(right: CupertinoDatePickerUtils._kPickerWidth / 4)
|
|
: EdgeInsets.only(left: CupertinoDatePickerUtils._kPickerWidth / 4),
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child: new Text(this.localizations.timerPickerMinute(minute))
|
|
)
|
|
);
|
|
}
|
|
else {
|
|
return new Container(
|
|
alignment: this.alignCenterLeft,
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
width: this.widget.mode == CupertinoTimerPickerMode.hm
|
|
? CupertinoDatePickerUtils._kPickerWidth / 10
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child:
|
|
new Text(this.localizations.timerPickerMinute(minute))
|
|
)
|
|
);
|
|
}
|
|
})
|
|
);
|
|
}
|
|
|
|
Widget _buildMinuteColumn() {
|
|
Widget minuteLabel;
|
|
if (this.widget.mode == CupertinoTimerPickerMode.hm) {
|
|
minuteLabel = new IgnorePointer(
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
padding: this.textDirectionFactor == 1
|
|
? EdgeInsets.only(left: CupertinoDatePickerUtils._kPickerWidth / 10)
|
|
: EdgeInsets.only(right: CupertinoDatePickerUtils._kPickerWidth / 10),
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child: this._buildLabel(this.localizations.timerPickerMinuteLabel(this.selectedMinute))
|
|
)
|
|
)
|
|
);
|
|
}
|
|
else {
|
|
minuteLabel = new IgnorePointer(
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
width: this.widget.mode == CupertinoTimerPickerMode.ms
|
|
? CupertinoDatePickerUtils._kPickerWidth / 4
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child: this._buildLabel(this.localizations.timerPickerMinuteLabel(this.selectedMinute))
|
|
)
|
|
)
|
|
);
|
|
}
|
|
|
|
return new Stack(
|
|
children: new List<Widget> {
|
|
this._buildMinutePicker(),
|
|
minuteLabel
|
|
}
|
|
);
|
|
}
|
|
|
|
Widget _buildSecondPicker() {
|
|
float offAxisFraction = 0.5f * this.textDirectionFactor;
|
|
float secondPickerWidth = this.widget.mode == CupertinoTimerPickerMode.ms
|
|
? CupertinoDatePickerUtils._kPickerWidth / 10
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6;
|
|
return new CupertinoPicker(
|
|
scrollController: new FixedExtentScrollController(
|
|
initialItem: this.selectedSecond / this.widget.secondInterval
|
|
),
|
|
offAxisFraction: offAxisFraction,
|
|
itemExtent: CupertinoDatePickerUtils._kItemExtent,
|
|
backgroundColor: CupertinoDatePickerUtils._kBackgroundColor,
|
|
onSelectedItemChanged: (int index) => {
|
|
this.setState(() => {
|
|
this.selectedSecond = index * this.widget.secondInterval;
|
|
this.widget.onTimerDurationChanged(
|
|
new TimeSpan(
|
|
hours: this.selectedHour,
|
|
minutes: this.selectedMinute,
|
|
seconds: this.selectedSecond));
|
|
});
|
|
},
|
|
children: CupertinoDatePickerUtils.listGenerate(60 / this.widget.secondInterval, (int index) => {
|
|
int second = index * this.widget.secondInterval;
|
|
string semanticsLabel = this.textDirectionFactor == 1
|
|
? this.localizations.timerPickerSecond(second) +
|
|
this.localizations.timerPickerSecondLabel(second)
|
|
: this.localizations.timerPickerSecondLabel(second) +
|
|
this.localizations.timerPickerSecond(second);
|
|
return new Container(
|
|
alignment: this.alignCenterLeft,
|
|
child: new Container(
|
|
alignment: this.alignCenterRight,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
width: secondPickerWidth,
|
|
child: new Text(this.localizations.timerPickerSecond(second))
|
|
)
|
|
);
|
|
})
|
|
);
|
|
}
|
|
|
|
Widget _buildSecondColumn() {
|
|
float secondPickerWidth = this.widget.mode == CupertinoTimerPickerMode.ms
|
|
? CupertinoDatePickerUtils._kPickerWidth / 10
|
|
: CupertinoDatePickerUtils._kPickerWidth / 6;
|
|
Widget secondLabel = new IgnorePointer(
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
padding: this.textDirectionFactor == 1
|
|
? EdgeInsets.only(left: secondPickerWidth)
|
|
: EdgeInsets.only(right: secondPickerWidth),
|
|
child: new Container(
|
|
alignment: this.alignCenterLeft,
|
|
padding: EdgeInsets.symmetric(horizontal: 2.0f),
|
|
child: this._buildLabel(this.localizations.timerPickerSecondLabel(this.selectedSecond))
|
|
)
|
|
)
|
|
);
|
|
return new Stack(
|
|
children: new List<Widget> {
|
|
this._buildSecondPicker(),
|
|
secondLabel
|
|
}
|
|
);
|
|
}
|
|
|
|
public override Widget build(BuildContext context) {
|
|
Widget picker;
|
|
if (this.widget.mode == CupertinoTimerPickerMode.hm) {
|
|
picker = new Row(
|
|
children: new List<Widget> {
|
|
new Expanded(child: this._buildHourColumn()),
|
|
new Expanded(child: this._buildMinuteColumn()),
|
|
}
|
|
);
|
|
}
|
|
else if (this.widget.mode == CupertinoTimerPickerMode.ms) {
|
|
picker = new Row(
|
|
children: new List<Widget> {
|
|
new Expanded(child: this._buildMinuteColumn()),
|
|
new Expanded(child: this._buildSecondColumn()),
|
|
}
|
|
);
|
|
}
|
|
else {
|
|
picker = new Row(
|
|
children: new List<Widget> {
|
|
new Expanded(child: this._buildHourColumn()),
|
|
new Container(
|
|
width: CupertinoDatePickerUtils._kPickerWidth / 3,
|
|
child: this._buildMinuteColumn()
|
|
),
|
|
new Expanded(child: this._buildSecondColumn()),
|
|
}
|
|
);
|
|
}
|
|
|
|
return new MediaQuery(
|
|
data: new MediaQueryData(
|
|
textScaleFactor: 1.0f
|
|
),
|
|
child: picker
|
|
);
|
|
}
|
|
}
|
|
}
|