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761 行
27 KiB
761 行
27 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.async;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.gestures;
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using Unity.UIWidgets.painting;
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using Unity.UIWidgets.rendering;
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using Unity.UIWidgets.ui;
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using Unity.UIWidgets.widgets;
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using UnityEngine;
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using Color = Unity.UIWidgets.ui.Color;
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using Rect = Unity.UIWidgets.ui.Rect;
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using TextStyle = Unity.UIWidgets.painting.TextStyle;
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namespace Unity.UIWidgets.material {
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public partial class material_ {
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internal static readonly TimeSpan _kMenuDuration = new TimeSpan(0, 0, 0, 0, 300);
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internal const float _kMenuCloseIntervalEnd = 2.0f / 3.0f;
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internal const float _kMenuHorizontalPadding = 16.0f;
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internal const float _kMenuDividerHeight = 16.0f;
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internal const float _kMenuMaxWidth = 5.0f * _kMenuWidthStep;
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internal const float _kMenuMinWidth = 2.0f * _kMenuWidthStep;
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internal const float _kMenuVerticalPadding = 8.0f;
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internal const float _kMenuWidthStep = 56.0f;
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internal const float _kMenuScreenPadding = 8.0f;
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}
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public abstract class PopupMenuEntry<T> : StatefulWidget {
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protected PopupMenuEntry(Key key = null) : base(key: key) {
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}
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public abstract float height { get; }
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public abstract bool represents(T value);
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}
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public class PopupMenuDivider<T> : PopupMenuEntry<T> {
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public PopupMenuDivider(Key key = null, float height = material_._kMenuDividerHeight) : base(key: key) {
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_height = height;
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}
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readonly float _height;
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public override float height {
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get { return _height; }
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}
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public override bool represents(T value) {
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return false;
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}
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public override State createState() {
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return new _PopupMenuDividerState<T>();
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}
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}
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class _PopupMenuDividerState<T> : State<PopupMenuDivider<T>> {
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public override Widget build(BuildContext context) {
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return new Divider(height: widget.height);
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}
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}
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class _MenuItem : SingleChildRenderObjectWidget {
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internal _MenuItem(
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Key key = null,
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ValueChanged<Size> onLayout = null,
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Widget child = null
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) : base(key: key, child: child) {
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Debug.Log(onLayout != null);
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this.onLayout = onLayout;
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}
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public readonly ValueChanged<Size> onLayout;
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public override RenderObject createRenderObject(BuildContext context) {
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return new _RenderMenuItemDuplicated(onLayout);
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}
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public override void updateRenderObject(BuildContext context, RenderObject renderObject) {
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if (renderObject is _RenderMenuItemDuplicated renderMenuItemDuplicated) {
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renderMenuItemDuplicated.onLayout = onLayout;
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}
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}
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}
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class _RenderMenuItemDuplicated : RenderShiftedBox {
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internal _RenderMenuItemDuplicated(
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ValueChanged<Size> onLayout,
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RenderBox child = null
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) : base(child) {
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D.assert(onLayout != null);
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this.onLayout = onLayout;
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}
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public ValueChanged<Size> onLayout;
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protected override void performLayout() {
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if (child == null) {
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size = Size.zero;
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}
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else {
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child.layout(constraints, parentUsesSize: true);
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size = constraints.constrain(child.size);
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}
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BoxParentData childParentData = child.parentData as BoxParentData;
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childParentData.offset = Offset.zero;
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onLayout(size);
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}
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}
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public class PopupMenuItem<T> : PopupMenuEntry<T> {
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public PopupMenuItem(
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Key key = null,
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T value = default,
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bool enabled = true,
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float height = material_.kMinInteractiveDimension,
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TextStyle textStyle = null,
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Widget child = null
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) : base(key: key) {
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this.value = value;
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this.enabled = enabled;
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_height = height;
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this.textStyle = textStyle;
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this.child = child;
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}
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public readonly T value;
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public readonly bool enabled;
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readonly float _height;
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public readonly TextStyle textStyle;
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public override float height {
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get { return _height; }
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}
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public readonly Widget child;
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public override bool represents(T value) {
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return Equals(value, this.value);
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}
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public override State createState() {
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return new PopupMenuItemState<T, PopupMenuItem<T>>();
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}
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}
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public class PopupMenuItemState<T, W> : State<W> where W : PopupMenuItem<T> {
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protected virtual Widget buildChild() {
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return widget.child;
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}
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protected virtual void handleTap() {
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Navigator.pop(context, widget.value);
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}
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public override Widget build(BuildContext context) {
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ThemeData theme = Theme.of(context);
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PopupMenuThemeData popupMenuTheme = PopupMenuTheme.of(context);
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TextStyle style = widget.textStyle ?? popupMenuTheme.textStyle ?? theme.textTheme.subtitle1;
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if (!widget.enabled) {
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style = style.copyWith(color: theme.disabledColor);
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}
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Widget item = new AnimatedDefaultTextStyle(
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style: style,
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duration: material_.kThemeChangeDuration,
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child: new Container(
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alignment: AlignmentDirectional.centerStart,
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constraints: new BoxConstraints(minHeight: widget.height),
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padding: EdgeInsets.symmetric(horizontal: material_._kMenuHorizontalPadding),
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child: buildChild()
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)
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);
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if (!widget.enabled) {
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bool isDark = theme.brightness == Brightness.dark;
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item = IconTheme.merge(
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data: new IconThemeData(opacity: isDark ? 0.5f : 0.38f),
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child: item
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);
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}
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return new InkWell(
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onTap: widget.enabled ? handleTap : (GestureTapCallback) null,
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canRequestFocus: widget.enabled,
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child: item
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);
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}
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}
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public class PopupMenuItemSingleTickerProviderState<T, W> : SingleTickerProviderStateMixin<W>
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where W : PopupMenuItem<T> {
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protected virtual Widget buildChild() {
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return widget.child;
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}
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protected virtual void handleTap() {
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Navigator.pop(context, widget.value);
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}
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public override Widget build(BuildContext context) {
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ThemeData theme = Theme.of(context);
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PopupMenuThemeData popupMenuTheme = PopupMenuTheme.of(context);
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TextStyle style = widget.textStyle ?? popupMenuTheme.textStyle ?? theme.textTheme.subtitle1;
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if (!widget.enabled) {
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style = style.copyWith(color: theme.disabledColor);
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}
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Widget item = new AnimatedDefaultTextStyle(
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style: style,
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duration: material_.kThemeChangeDuration,
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child: new Container(
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alignment: AlignmentDirectional.centerStart,
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constraints: new BoxConstraints(minHeight: widget.height),
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padding: EdgeInsets.symmetric(horizontal: material_._kMenuHorizontalPadding),
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child: buildChild()
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)
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);
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if (!widget.enabled) {
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bool isDark = theme.brightness == Brightness.dark;
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item = IconTheme.merge(
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data: new IconThemeData(opacity: isDark ? 0.5f : 0.38f),
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child: item
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);
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}
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return new InkWell(
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onTap: widget.enabled ? handleTap : (GestureTapCallback) null,
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canRequestFocus: widget.enabled,
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child: item
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);
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}
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}
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public class CheckedPopupMenuItem<T> : PopupMenuItem<T> {
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public CheckedPopupMenuItem(
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Key key = null,
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T value = default,
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bool isChecked = false,
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bool enabled = true,
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Widget child = null
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) : base(
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key: key,
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value: value,
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enabled: enabled,
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child: child
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) {
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this.isChecked = isChecked;
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}
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public readonly bool isChecked;
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public override State createState() {
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return new _CheckedPopupMenuItemState<T>();
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}
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}
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class _CheckedPopupMenuItemState<T> : PopupMenuItemSingleTickerProviderState<T, CheckedPopupMenuItem<T>> {
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static readonly TimeSpan _fadeDuration = new TimeSpan(0, 0, 0, 0, 150);
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AnimationController _controller;
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Animation<float> _opacity {
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get { return _controller.view; }
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}
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public override void initState() {
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base.initState();
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_controller = new AnimationController(duration: _fadeDuration, vsync: this);
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_controller.setValue(widget.isChecked ? 1.0f : 0.0f);
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_controller.addListener(() => setState(() => {
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/* animation changed */
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}));
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}
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protected override void handleTap() {
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if (widget.isChecked) {
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_controller.reverse();
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}
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else {
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_controller.forward();
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}
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base.handleTap();
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}
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protected override Widget buildChild() {
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return new ListTile(
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enabled: widget.enabled,
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leading: new FadeTransition(
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opacity: _opacity,
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child: new Icon(_controller.isDismissed ? null : Icons.done)
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),
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title: widget.child
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);
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}
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}
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class _PopupMenu<T> : StatelessWidget {
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public _PopupMenu(
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Key key = null,
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_PopupMenuRoute<T> route = null
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) : base(key: key) {
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this.route = route;
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}
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public readonly _PopupMenuRoute<T> route;
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public override Widget build(BuildContext context) {
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float unit = 1.0f / (route.items.Count + 1.5f);
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List<Widget> children = new List<Widget>();
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PopupMenuThemeData popupMenuTheme = PopupMenuTheme.of(context);
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for (int i = 0; i < route.items.Count; i += 1) {
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int index = i;
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float start = (index + 1) * unit;
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float end = (start + 1.5f * unit).clamp(0.0f, 1.0f);
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CurvedAnimation opacityCurvedAnimation = new CurvedAnimation(
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parent: route.animation,
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curve: new Interval(start, end)
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);
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Widget item = route.items[index];
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if (route.initialValue != null && route.items[index].represents((T) route.initialValue)) {
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item = new Container(
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color: Theme.of(context).highlightColor,
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child: item
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);
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}
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children.Add(
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new _MenuItem(
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onLayout: (Size size) => { route.itemSizes[index] = size; },
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child: new FadeTransition(
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opacity: opacityCurvedAnimation,
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child: item
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)
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)
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);
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}
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CurveTween opacity = new CurveTween(curve: new Interval(0.0f, 1.0f / 3.0f));
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CurveTween width = new CurveTween(curve: new Interval(0.0f, unit));
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CurveTween height = new CurveTween(curve: new Interval(0.0f, unit * route.items.Count));
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Widget child = new ConstrainedBox(
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constraints: new BoxConstraints(
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minWidth: material_._kMenuMinWidth,
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maxWidth: material_._kMenuMaxWidth
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),
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child: new IntrinsicWidth(
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stepWidth: material_._kMenuWidthStep,
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child: new SingleChildScrollView(
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padding: EdgeInsets.symmetric(
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vertical: material_._kMenuVerticalPadding
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),
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child: new ListBody(children: children)
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)
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)
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);
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return new AnimatedBuilder(
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animation: route.animation,
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builder: (_, builderChild) => {
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return new Opacity(
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opacity: opacity.evaluate(route.animation),
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child: new Material(
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shape: route.shape ?? popupMenuTheme.shape,
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color: route.color ?? popupMenuTheme.color,
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type: MaterialType.card,
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elevation: route.elevation ?? popupMenuTheme.elevation ?? 8.0f,
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child: new Align(
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alignment: Alignment.topRight,
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widthFactor: width.evaluate(route.animation),
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heightFactor: height.evaluate(route.animation),
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child: builderChild
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)
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)
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);
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},
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child: child
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);
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}
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}
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class _PopupMenuRouteLayout : SingleChildLayoutDelegate {
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public _PopupMenuRouteLayout(RelativeRect position, List<Size> itemSizes, int selectedItemIndex,
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TextDirection? textDirection) {
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this.position = position;
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this.itemSizes = itemSizes;
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this.selectedItemIndex = selectedItemIndex;
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this.textDirection = textDirection;
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}
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public readonly RelativeRect position;
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public List<Size> itemSizes;
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public readonly int selectedItemIndex;
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public readonly TextDirection? textDirection;
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public override BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
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return BoxConstraints.loose(
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constraints.biggest - new Offset(material_._kMenuScreenPadding * 2.0f,
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material_._kMenuScreenPadding * 2.0f)
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);
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}
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public override Offset getPositionForChild(Size size, Size childSize) {
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float y = position.top;
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if (selectedItemIndex != null && itemSizes != null) {
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float selectedItemOffset = material_._kMenuVerticalPadding;
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for (int index = 0; index < selectedItemIndex; index += 1)
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selectedItemOffset += itemSizes[index].height;
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selectedItemOffset += itemSizes[selectedItemIndex].height / 2;
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y = position.top + (size.height - position.top - position.bottom) / 2.0f - selectedItemOffset;
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}
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float x = 0;
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if (position.left > position.right) {
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x = size.width - position.right - childSize.width;
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}
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else if (position.left < position.right) {
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x = position.left;
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}
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else {
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D.assert(textDirection != null);
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switch (textDirection) {
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case TextDirection.rtl:
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x = size.width - position.right - childSize.width;
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break;
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case TextDirection.ltr:
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x = position.left;
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break;
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}
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}
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if (x < material_._kMenuScreenPadding) {
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x = material_._kMenuScreenPadding;
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}
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else if (x + childSize.width > size.width - material_._kMenuScreenPadding) {
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x = size.width - childSize.width - material_._kMenuScreenPadding;
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}
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if (y < material_._kMenuScreenPadding) {
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y = material_._kMenuScreenPadding;
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}
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else if (y + childSize.height > size.height - material_._kMenuScreenPadding) {
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y = size.height - childSize.height - material_._kMenuScreenPadding;
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}
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return new Offset(x, y);
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}
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public override bool shouldRelayout(SingleChildLayoutDelegate oldDelegate) {
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if (oldDelegate is _PopupMenuRouteLayout popupMenu) {
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D.assert(itemSizes.Count == popupMenu.itemSizes.Count);
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return position != popupMenu.position
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|| selectedItemIndex != popupMenu.selectedItemIndex
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|| textDirection != popupMenu.textDirection
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|| !itemSizes.equalsList(popupMenu.itemSizes);
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}
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else {
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return false;
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}
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}
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}
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class _PopupMenuRoute<T> : PopupRoute {
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public _PopupMenuRoute(
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RelativeRect position = null,
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List<PopupMenuEntry<T>> items = null,
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T initialValue = default,
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float? elevation = 8.0f,
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ThemeData theme = null,
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PopupMenuThemeData popupMenuTheme = null,
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string barrierLabel = null,
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ShapeBorder shape = null,
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Color color = null,
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BuildContext showMenuContext = null,
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bool? captureInheritedThemes = null
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) {
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this.position = position;
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this.items = items;
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this.initialValue = initialValue;
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this.elevation = elevation;
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this.theme = theme;
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this.popupMenuTheme = popupMenuTheme;
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this.barrierLabel = barrierLabel;
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this.shape = shape;
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this.color = color;
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this.showMenuContext = showMenuContext;
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this.captureInheritedThemes = captureInheritedThemes;
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itemSizes = new List<Size>(new Size[items.Count]);
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}
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public readonly RelativeRect position;
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public readonly List<PopupMenuEntry<T>> items;
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public readonly List<Size> itemSizes;
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public readonly T initialValue;
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public readonly float? elevation;
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public readonly ThemeData theme;
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public readonly ShapeBorder shape;
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public readonly Color color;
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public readonly PopupMenuThemeData popupMenuTheme;
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public readonly BuildContext showMenuContext;
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public readonly bool? captureInheritedThemes;
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public override Animation<float> createAnimation() {
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return new CurvedAnimation(
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parent: base.createAnimation(),
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curve: Curves.linear,
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reverseCurve: new Interval(0.0f, material_._kMenuCloseIntervalEnd)
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);
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}
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public override TimeSpan transitionDuration {
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get { return material_._kMenuDuration; }
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}
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public override bool barrierDismissible {
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get { return true; }
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}
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public override Color barrierColor {
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get { return null; }
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}
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public override string barrierLabel { get; }
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public override Widget buildPage(BuildContext context, Animation<float> animation,
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Animation<float> secondaryAnimation) {
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int? selectedItemIndex = null;
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if (initialValue != null) {
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for (int index = 0; selectedItemIndex == null && index < items.Count; index += 1) {
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if (items[index].represents(initialValue))
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selectedItemIndex = index;
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}
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}
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Widget menu = new _PopupMenu<T>(route: this);
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if (captureInheritedThemes ?? false) {
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menu = InheritedTheme.captureAll(showMenuContext, menu);
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}
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else {
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if (theme != null)
|
|
menu = new Theme(data: theme, child: menu);
|
|
}
|
|
|
|
return MediaQuery.removePadding(
|
|
context: context,
|
|
removeTop: true,
|
|
removeBottom: true,
|
|
removeLeft: true,
|
|
removeRight: true,
|
|
child: new Builder(
|
|
builder: _ => new CustomSingleChildLayout(
|
|
layoutDelegate: new _PopupMenuRouteLayout(
|
|
position,
|
|
itemSizes,
|
|
selectedItemIndex ?? 0,
|
|
Directionality.of(context)
|
|
),
|
|
child: menu
|
|
))
|
|
);
|
|
}
|
|
}
|
|
|
|
public partial class material_ {
|
|
public static Future<T> showMenu<T>(
|
|
BuildContext context,
|
|
RelativeRect position,
|
|
List<PopupMenuEntry<T>> items,
|
|
T initialValue,
|
|
float? elevation,
|
|
ShapeBorder shape,
|
|
Color color,
|
|
bool captureInheritedThemes = true,
|
|
bool useRootNavigator = false
|
|
) {
|
|
D.assert(context != null);
|
|
D.assert(position != null);
|
|
D.assert(items != null && items.isNotEmpty());
|
|
D.assert(material_.debugCheckHasMaterialLocalizations(context));
|
|
|
|
return Navigator.of(context, rootNavigator: useRootNavigator).push(new _PopupMenuRoute<T>(
|
|
position: position,
|
|
items: items,
|
|
initialValue: initialValue,
|
|
elevation: elevation,
|
|
theme: Theme.of(context, shadowThemeOnly: true),
|
|
popupMenuTheme: PopupMenuTheme.of(context),
|
|
barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
|
|
shape: shape,
|
|
color: color,
|
|
showMenuContext: context,
|
|
captureInheritedThemes: captureInheritedThemes
|
|
)).to<T>();
|
|
}
|
|
}
|
|
|
|
public delegate void PopupMenuItemSelected<T>(T value);
|
|
|
|
public delegate void PopupMenuCanceled();
|
|
|
|
public delegate List<PopupMenuEntry<T>> PopupMenuItemBuilder<T>(BuildContext context);
|
|
|
|
public class PopupMenuButton<T> : StatefulWidget {
|
|
public PopupMenuButton(
|
|
Key key = null,
|
|
PopupMenuItemBuilder<T> itemBuilder = null,
|
|
T initialValue = default,
|
|
PopupMenuItemSelected<T> onSelected = null,
|
|
PopupMenuCanceled onCanceled = null,
|
|
string tooltip = null,
|
|
float? elevation = null,
|
|
EdgeInsetsGeometry padding = null,
|
|
Widget child = null,
|
|
Icon icon = null,
|
|
Offset offset = null,
|
|
bool enabled = true,
|
|
ShapeBorder shape = null,
|
|
Color color = null,
|
|
bool captureInheritedThemes = true
|
|
) : base(key: key) {
|
|
offset = offset ?? Offset.zero;
|
|
D.assert(itemBuilder != null);
|
|
D.assert(offset != null);
|
|
D.assert(!(child != null && icon != null), () => "You can only pass [child] or [icon], not both.");
|
|
|
|
this.itemBuilder = itemBuilder;
|
|
this.initialValue = initialValue;
|
|
this.onSelected = onSelected;
|
|
this.onCanceled = onCanceled;
|
|
this.tooltip = tooltip;
|
|
this.elevation = elevation;
|
|
this.padding = padding ?? EdgeInsets.all(8.0f);
|
|
this.child = child;
|
|
this.icon = icon;
|
|
this.offset = offset;
|
|
this.enabled = enabled;
|
|
this.shape = shape;
|
|
this.color = color;
|
|
this.captureInheritedThemes = captureInheritedThemes;
|
|
}
|
|
|
|
|
|
public readonly PopupMenuItemBuilder<T> itemBuilder;
|
|
|
|
public readonly T initialValue;
|
|
|
|
public readonly PopupMenuItemSelected<T> onSelected;
|
|
|
|
public readonly PopupMenuCanceled onCanceled;
|
|
|
|
public readonly string tooltip;
|
|
|
|
public readonly float? elevation;
|
|
|
|
public readonly EdgeInsetsGeometry padding;
|
|
|
|
public readonly Widget child;
|
|
|
|
public readonly Widget icon;
|
|
|
|
public readonly Offset offset;
|
|
|
|
public readonly bool enabled;
|
|
|
|
public readonly ShapeBorder shape;
|
|
|
|
public readonly Color color;
|
|
|
|
public readonly bool captureInheritedThemes;
|
|
|
|
public override State createState() {
|
|
return new PopupMenuButtonState<T>();
|
|
}
|
|
}
|
|
|
|
public class PopupMenuButtonState<T> : State<PopupMenuButton<T>> {
|
|
void showButtonMenu() {
|
|
PopupMenuThemeData popupMenuTheme = PopupMenuTheme.of(context);
|
|
RenderBox button = (RenderBox) context.findRenderObject();
|
|
RenderBox overlay = (RenderBox) Overlay.of(context).context.findRenderObject();
|
|
RelativeRect position = RelativeRect.fromRect(
|
|
Rect.fromPoints(
|
|
button.localToGlobal(widget.offset, ancestor: overlay),
|
|
button.localToGlobal(button.size.bottomRight(Offset.zero), ancestor: overlay)
|
|
),
|
|
Offset.zero & overlay.size
|
|
);
|
|
List<PopupMenuEntry<T>> items = widget.itemBuilder(context);
|
|
if (items.isNotEmpty()) {
|
|
material_.showMenu<T>(
|
|
context: context,
|
|
elevation: widget.elevation ?? popupMenuTheme.elevation,
|
|
items: items,
|
|
initialValue: widget.initialValue,
|
|
position: position,
|
|
shape: widget.shape ?? popupMenuTheme.shape,
|
|
color: widget.color ?? popupMenuTheme.color,
|
|
captureInheritedThemes: widget.captureInheritedThemes
|
|
)
|
|
.then(newValue => {
|
|
if (!mounted)
|
|
return;
|
|
if (newValue == null) {
|
|
if (widget.onCanceled != null)
|
|
widget.onCanceled();
|
|
return;
|
|
}
|
|
|
|
if (widget.onSelected != null)
|
|
widget.onSelected((T) newValue);
|
|
});
|
|
}
|
|
}
|
|
|
|
Icon _getIcon(RuntimePlatform platform) {
|
|
switch (platform) {
|
|
case RuntimePlatform.IPhonePlayer:
|
|
case RuntimePlatform.OSXEditor:
|
|
case RuntimePlatform.OSXPlayer:
|
|
return new Icon(Icons.more_horiz);
|
|
default:
|
|
return new Icon(Icons.more_vert);
|
|
}
|
|
}
|
|
|
|
public override Widget build(BuildContext context) {
|
|
D.assert(material_.debugCheckHasMaterialLocalizations(context));
|
|
if (widget.child != null)
|
|
return new Tooltip(
|
|
message: widget.tooltip ?? MaterialLocalizations.of(context).showMenuTooltip,
|
|
child: new InkWell(
|
|
onTap: widget.enabled ? showButtonMenu : (GestureTapCallback) null,
|
|
canRequestFocus: widget.enabled,
|
|
child: widget.child
|
|
)
|
|
);
|
|
|
|
|
|
return new IconButton(
|
|
icon: widget.icon ?? _getIcon(Theme.of(context).platform),
|
|
padding: widget.padding,
|
|
tooltip: widget.tooltip ?? MaterialLocalizations.of(context).showMenuTooltip,
|
|
onPressed: widget.enabled ? showButtonMenu : (VoidCallback) null
|
|
);
|
|
}
|
|
}
|
|
}
|