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1103 行
41 KiB
1103 行
41 KiB
using System.Collections.Generic;
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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 TextStyle = Unity.UIWidgets.painting.TextStyle;
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namespace Unity.UIWidgets.cupertino {
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class CupertinoActionSheetUtils {
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public static readonly TextStyle _kActionSheetActionStyle = new TextStyle(
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// fontFamily: ".SF UI Text",
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fontFamily: ".SF Pro Text",
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inherit: false,
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fontSize: 20.0f,
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fontWeight: FontWeight.w400,
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color: CupertinoColors.activeBlue,
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textBaseline: TextBaseline.alphabetic
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);
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public static readonly TextStyle _kActionSheetContentStyle = new TextStyle(
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// fontFamily: ".SF UI Text",
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fontFamily: ".SF Pro Text",
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inherit: false,
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fontSize: 13.0f,
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fontWeight: FontWeight.w400,
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color: _kContentTextColor,
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textBaseline: TextBaseline.alphabetic
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);
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public static readonly BoxDecoration _kAlertBlurOverlayDecoration = new BoxDecoration(
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color: CupertinoColors.white,
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backgroundBlendMode: BlendMode.overlay
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);
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public static readonly Color _kBackgroundColor = new Color(0xD1F8F8F8);
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public static readonly Color _kPressedColor = new Color(0xA6E5E5EA);
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public static readonly Color _kButtonDividerColor = new Color(0x403F3F3F);
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public static readonly Color _kContentTextColor = new Color(0xFF8F8F8F);
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public static readonly Color _kCancelButtonPressedColor = new Color(0xFFEAEAEA);
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public const float _kBlurAmount = 20.0f;
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public const float _kEdgeHorizontalPadding = 8.0f;
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public const float _kCancelButtonPadding = 8.0f;
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public const float _kEdgeVerticalPadding = 10.0f;
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public const float _kContentHorizontalPadding = 40.0f;
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public const float _kContentVerticalPadding = 14.0f;
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public const float _kButtonHeight = 56.0f;
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public const float _kCornerRadius = 14.0f;
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public const float _kDividerThickness = 1.0f;
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}
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public class CupertinoActionSheet : StatelessWidget {
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public CupertinoActionSheet(
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Key key = null,
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Widget title = null,
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Widget message = null,
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List<Widget> actions = null,
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ScrollController messageScrollController = null,
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ScrollController actionScrollController = null,
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Widget cancelButton = null
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) : base(key: key) {
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D.assert(actions != null || title != null || message != null || cancelButton != null,
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() =>
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"An action sheet must have a non-null value for at least one of the following arguments: actions, title, message, or cancelButton");
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this.title = title;
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this.message = message;
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this.actions = actions ?? new List<Widget>();
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this.messageScrollController = messageScrollController;
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this.actionScrollController = actionScrollController;
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this.cancelButton = cancelButton;
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}
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public readonly Widget title;
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public readonly Widget message;
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public readonly List<Widget> actions;
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public readonly ScrollController messageScrollController;
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public readonly ScrollController actionScrollController;
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public readonly Widget cancelButton;
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Widget _buildContent() {
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List<Widget> content = new List<Widget>();
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if (title != null || message != null) {
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Widget titleSection = new _CupertinoAlertContentSection(
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title: title,
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message: message,
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scrollController: messageScrollController
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);
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content.Add(new Flexible(child: titleSection));
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}
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return new Container(
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color: CupertinoActionSheetUtils._kBackgroundColor,
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child: new Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: content
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)
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);
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}
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Widget _buildActions() {
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if (actions == null || actions.isEmpty()) {
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return new Container(height: 0.0f);
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}
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return new Container(
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child: new _CupertinoAlertActionSection(
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children: actions,
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scrollController: actionScrollController,
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hasCancelButton: cancelButton != null
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)
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);
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}
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Widget _buildCancelButton() {
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float cancelPadding = (actions != null || message != null || title != null)
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? CupertinoActionSheetUtils._kCancelButtonPadding
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: 0.0f;
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return new Padding(
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padding: EdgeInsets.only(top: cancelPadding),
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child: new _CupertinoActionSheetCancelButton(
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child: cancelButton
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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<Widget> children = new List<Widget> {
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new Flexible(child: new ClipRRect(
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borderRadius: BorderRadius.circular(12.0f),
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child: new BackdropFilter(
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filter: ImageFilter.blur(sigmaX: CupertinoActionSheetUtils._kBlurAmount,
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sigmaY: CupertinoActionSheetUtils._kBlurAmount),
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child: new Container(
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decoration: CupertinoActionSheetUtils._kAlertBlurOverlayDecoration,
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child: new _CupertinoAlertRenderWidget(
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contentSection: _buildContent(),
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actionsSection: _buildActions()
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)
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)
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)
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)
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),
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};
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if (cancelButton != null) {
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children.Add(_buildCancelButton()
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);
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}
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Orientation orientation = MediaQuery.of(context).orientation;
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float actionSheetWidth;
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if (orientation == Orientation.portrait) {
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actionSheetWidth = MediaQuery.of(context).size.width -
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(CupertinoActionSheetUtils._kEdgeHorizontalPadding * 2);
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}
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else {
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actionSheetWidth = MediaQuery.of(context).size.height -
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(CupertinoActionSheetUtils._kEdgeHorizontalPadding * 2);
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}
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return new SafeArea(
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child: new Container(
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width: actionSheetWidth,
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margin: EdgeInsets.symmetric(
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horizontal: CupertinoActionSheetUtils._kEdgeHorizontalPadding,
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vertical: CupertinoActionSheetUtils._kEdgeVerticalPadding
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),
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child: new Column(
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children: children,
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch
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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 class CupertinoActionSheetAction : StatelessWidget {
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public CupertinoActionSheetAction(
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Widget child,
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VoidCallback onPressed,
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bool isDefaultAction = false,
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bool isDestructiveAction = false
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) {
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D.assert(child != null);
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D.assert(onPressed != null);
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this.child = child;
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this.onPressed = onPressed;
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this.isDefaultAction = isDefaultAction;
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this.isDestructiveAction = isDestructiveAction;
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}
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public readonly VoidCallback onPressed;
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public readonly bool isDefaultAction;
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public readonly bool isDestructiveAction;
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public readonly Widget child;
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public override Widget build(BuildContext context) {
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TextStyle style = CupertinoActionSheetUtils._kActionSheetActionStyle;
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if (isDefaultAction) {
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style = style.copyWith(fontWeight: FontWeight.w600);
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}
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if (isDestructiveAction) {
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style = style.copyWith(color: CupertinoColors.destructiveRed);
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}
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return new GestureDetector(
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onTap: () => onPressed(),
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behavior: HitTestBehavior.opaque,
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child: new ConstrainedBox(
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constraints: new BoxConstraints(
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minHeight: CupertinoActionSheetUtils._kButtonHeight
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),
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child: new Container(
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alignment: Alignment.center,
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padding: EdgeInsets.symmetric(
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vertical: 16.0f,
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horizontal: 10.0f
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),
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child: new DefaultTextStyle(
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style: style,
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child: child,
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textAlign: TextAlign.center
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)
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)
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)
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);
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}
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}
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class _CupertinoActionSheetCancelButton : StatefulWidget {
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public _CupertinoActionSheetCancelButton(
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Key key = null,
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Widget child = null
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) : base(key: key) {
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this.child = child;
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}
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public readonly Widget child;
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public override State createState() {
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return new _CupertinoActionSheetCancelButtonState();
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}
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}
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class _CupertinoActionSheetCancelButtonState : State<_CupertinoActionSheetCancelButton> {
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Color _backgroundColor;
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public override void initState() {
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_backgroundColor = CupertinoColors.white;
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base.initState();
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}
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void _onTapDown(TapDownDetails evt) {
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setState(() => { _backgroundColor = CupertinoActionSheetUtils._kCancelButtonPressedColor; });
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}
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void _onTapUp(TapUpDetails evt) {
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setState(() => { _backgroundColor = CupertinoColors.white; });
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}
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void _onTapCancel() {
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setState(() => { _backgroundColor = CupertinoColors.white; });
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}
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public override Widget build(BuildContext context) {
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return new GestureDetector(
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onTapDown: _onTapDown,
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onTapUp: _onTapUp,
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onTapCancel: _onTapCancel,
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child: new Container(
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decoration: new BoxDecoration(
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color: _backgroundColor,
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borderRadius: BorderRadius.circular(CupertinoActionSheetUtils._kCornerRadius)
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),
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child: widget.child
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)
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);
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}
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}
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class _CupertinoAlertRenderWidget : RenderObjectWidget {
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public _CupertinoAlertRenderWidget(
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Widget contentSection,
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Widget actionsSection,
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Key key = null
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) : base(key: key) {
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this.contentSection = contentSection;
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this.actionsSection = actionsSection;
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}
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public readonly Widget contentSection;
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public readonly Widget actionsSection;
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public override RenderObject createRenderObject(BuildContext context) {
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return new _RenderCupertinoAlert(
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dividerThickness: CupertinoActionSheetUtils._kDividerThickness /
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MediaQuery.of(context).devicePixelRatio
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);
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}
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public override Element createElement() {
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return new _CupertinoAlertRenderElement(this);
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}
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}
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class _CupertinoAlertRenderElement : RenderObjectElement {
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public _CupertinoAlertRenderElement(_CupertinoAlertRenderWidget widget) : base(widget) {
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}
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Element _contentElement;
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Element _actionsElement;
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public new _CupertinoAlertRenderWidget widget {
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get { return base.widget as _CupertinoAlertRenderWidget; }
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}
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public new _RenderCupertinoAlert renderObject {
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get { return base.renderObject as _RenderCupertinoAlert; }
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}
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public override void visitChildren(ElementVisitor visitor) {
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if (_contentElement != null) {
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visitor(_contentElement);
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}
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if (_actionsElement != null) {
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visitor(_actionsElement);
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}
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}
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public override void mount(Element parent, object newSlot) {
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base.mount(parent, newSlot);
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_contentElement = updateChild(_contentElement, widget.contentSection,
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_AlertSections.contentSection);
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_actionsElement = updateChild(_actionsElement, widget.actionsSection,
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_AlertSections.actionsSection);
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}
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protected override void insertChildRenderObject(RenderObject child, object slot) {
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_placeChildInSlot(child, slot);
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}
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protected override void moveChildRenderObject(RenderObject child, object slot) {
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_placeChildInSlot(child, slot);
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}
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public override void update(Widget newWidget) {
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base.update(newWidget);
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_contentElement = updateChild(_contentElement, widget.contentSection,
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_AlertSections.contentSection);
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_actionsElement = updateChild(_actionsElement, widget.actionsSection,
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_AlertSections.actionsSection);
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}
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protected override void forgetChild(Element child) {
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D.assert(child == _contentElement || child == _actionsElement);
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if (_contentElement == child) {
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_contentElement = null;
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}
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else if (_actionsElement == child) {
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_actionsElement = null;
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}
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}
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protected override void removeChildRenderObject(RenderObject child) {
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D.assert(child == renderObject.contentSection || child == renderObject.actionsSection);
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if (renderObject.contentSection == child) {
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renderObject.contentSection = null;
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}
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else if (renderObject.actionsSection == child) {
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renderObject.actionsSection = null;
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}
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}
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void _placeChildInSlot(RenderObject child, object slot) {
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switch ((_AlertSections) slot) {
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case _AlertSections.contentSection:
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renderObject.contentSection = child as RenderBox;
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break;
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case _AlertSections.actionsSection:
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renderObject.actionsSection = child as RenderBox;
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;
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break;
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}
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}
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}
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class _RenderCupertinoAlert : RenderBox {
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public _RenderCupertinoAlert(
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RenderBox contentSection = null,
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RenderBox actionsSection = null,
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float dividerThickness = 0.0f
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) {
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_contentSection = contentSection;
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_actionsSection = actionsSection;
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_dividerThickness = dividerThickness;
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}
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public RenderBox contentSection {
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get { return _contentSection; }
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set {
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if (value != _contentSection) {
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if (null != _contentSection) {
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dropChild(_contentSection);
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}
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_contentSection = value;
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if (null != _contentSection) {
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adoptChild(_contentSection);
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}
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}
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}
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}
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RenderBox _contentSection;
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public RenderBox actionsSection {
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get { return _actionsSection; }
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set {
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if (value != _actionsSection) {
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if (null != _actionsSection) {
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dropChild(_actionsSection);
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}
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_actionsSection = value;
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if (null != _actionsSection) {
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adoptChild(_actionsSection);
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}
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}
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}
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}
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RenderBox _actionsSection;
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readonly float _dividerThickness;
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readonly Paint _dividerPaint = new Paint() {
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color = CupertinoActionSheetUtils._kButtonDividerColor,
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style = PaintingStyle.fill
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};
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public override void attach(object owner) {
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base.attach(owner);
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if (null != contentSection) {
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contentSection.attach(owner);
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}
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if (null != actionsSection) {
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actionsSection.attach(owner);
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}
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}
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public override void detach() {
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base.detach();
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if (null != contentSection) {
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contentSection.detach();
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}
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if (null != actionsSection) {
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actionsSection.detach();
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}
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}
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public override void redepthChildren() {
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if (null != contentSection) {
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redepthChild(contentSection);
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}
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if (null != actionsSection) {
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redepthChild(actionsSection);
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}
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}
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public override void setupParentData(RenderObject child) {
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if (!(child.parentData is MultiChildLayoutParentData)) {
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child.parentData = new MultiChildLayoutParentData();
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}
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}
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public override void visitChildren(RenderObjectVisitor visitor) {
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if (contentSection != null) {
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visitor(contentSection);
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}
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if (actionsSection != null) {
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visitor(actionsSection);
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}
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}
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public override List<DiagnosticsNode> debugDescribeChildren() {
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List<DiagnosticsNode> value = new List<DiagnosticsNode>();
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if (contentSection != null) {
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value.Add(contentSection.toDiagnosticsNode(name: "content"));
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}
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if (actionsSection != null) {
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value.Add(actionsSection.toDiagnosticsNode(name: "actions"));
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}
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return value;
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}
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protected override float computeMinIntrinsicWidth(float height) {
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return constraints.minWidth;
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}
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protected override float computeMaxIntrinsicWidth(float height) {
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return constraints.maxWidth;
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}
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protected override float computeMinIntrinsicHeight(float width) {
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float contentHeight = contentSection.getMinIntrinsicHeight(width);
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float actionsHeight = actionsSection.getMinIntrinsicHeight(width);
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bool hasDivider = contentHeight > 0.0f && actionsHeight > 0.0f;
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float height = contentHeight + (hasDivider ? _dividerThickness : 0.0f) + actionsHeight;
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if (actionsHeight > 0 || contentHeight > 0) {
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height -= 2 * CupertinoActionSheetUtils._kEdgeVerticalPadding;
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}
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if (height.isFinite()) {
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return height;
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}
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return 0.0f;
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}
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protected internal override float computeMaxIntrinsicHeight(float width) {
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float contentHeight = contentSection.getMaxIntrinsicHeight(width);
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float actionsHeight = actionsSection.getMaxIntrinsicHeight(width);
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bool hasDivider = contentHeight > 0.0f && actionsHeight > 0.0f;
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float height = contentHeight + (hasDivider ? _dividerThickness : 0.0f) + actionsHeight;
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if (actionsHeight > 0 || contentHeight > 0) {
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height -= 2 * CupertinoActionSheetUtils._kEdgeVerticalPadding;
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}
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if (height.isFinite()) {
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return height;
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}
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return 0.0f;
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}
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protected override void performLayout() {
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bool hasDivider = contentSection.getMaxIntrinsicHeight(constraints.maxWidth) > 0.0f
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&& actionsSection.getMaxIntrinsicHeight(constraints.maxWidth) > 0.0f;
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float dividerThickness = hasDivider ? _dividerThickness : 0.0f;
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float minActionsHeight = actionsSection.getMinIntrinsicHeight(constraints.maxWidth);
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contentSection.layout(
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constraints.deflate(EdgeInsets.only(bottom: minActionsHeight + dividerThickness)),
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parentUsesSize: true
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);
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Size contentSize = contentSection.size;
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|
|
|
actionsSection.layout(
|
|
constraints.deflate(EdgeInsets.only(top: contentSize.height + dividerThickness)),
|
|
parentUsesSize: true
|
|
);
|
|
Size actionsSize = actionsSection.size;
|
|
|
|
|
|
float actionSheetHeight = contentSize.height + dividerThickness + actionsSize.height;
|
|
|
|
|
|
size = new Size(constraints.maxWidth, actionSheetHeight);
|
|
|
|
|
|
D.assert(actionsSection.parentData is MultiChildLayoutParentData);
|
|
MultiChildLayoutParentData actionParentData = actionsSection.parentData as MultiChildLayoutParentData;
|
|
actionParentData.offset = new Offset(0.0f, contentSize.height + dividerThickness);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
MultiChildLayoutParentData contentParentData = contentSection.parentData as MultiChildLayoutParentData;
|
|
contentSection.paint(context, offset + contentParentData.offset);
|
|
|
|
bool hasDivider = contentSection.size.height > 0.0f && actionsSection.size.height > 0.0f;
|
|
if (hasDivider) {
|
|
_paintDividerBetweenContentAndActions(context.canvas, offset);
|
|
}
|
|
|
|
MultiChildLayoutParentData actionsParentData = actionsSection.parentData as MultiChildLayoutParentData;
|
|
actionsSection.paint(context, offset + actionsParentData.offset);
|
|
}
|
|
|
|
void _paintDividerBetweenContentAndActions(Canvas canvas, Offset offset) {
|
|
canvas.drawRect(
|
|
Rect.fromLTWH(
|
|
offset.dx,
|
|
offset.dy + contentSection.size.height, size.width, _dividerThickness
|
|
), _dividerPaint
|
|
);
|
|
}
|
|
|
|
protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null) {
|
|
MultiChildLayoutParentData contentSectionParentData =
|
|
contentSection.parentData as MultiChildLayoutParentData;
|
|
MultiChildLayoutParentData actionsSectionParentData =
|
|
actionsSection.parentData as MultiChildLayoutParentData;
|
|
return result.addWithPaintOffset(
|
|
offset: contentSectionParentData.offset,
|
|
position: position,
|
|
hitTest: (BoxHitTestResult resultIn, Offset transformed) => {
|
|
D.assert(transformed == position - contentSectionParentData.offset);
|
|
return contentSection.hitTest(resultIn, position: transformed);
|
|
}
|
|
) || result.addWithPaintOffset(
|
|
offset: actionsSectionParentData.offset,
|
|
position: position,
|
|
hitTest: (BoxHitTestResult resultIn, Offset transformed) => {
|
|
D.assert(transformed == position - actionsSectionParentData.offset);
|
|
return actionsSection.hitTest(resultIn, position: transformed);
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
|
|
enum _AlertSections {
|
|
contentSection,
|
|
actionsSection,
|
|
}
|
|
|
|
|
|
class _CupertinoAlertContentSection : StatelessWidget {
|
|
public _CupertinoAlertContentSection(
|
|
Key key = null,
|
|
Widget title = null,
|
|
Widget message = null,
|
|
ScrollController scrollController = null
|
|
) : base(key: key) {
|
|
this.title = title;
|
|
this.message = message;
|
|
this.scrollController = scrollController;
|
|
}
|
|
|
|
public readonly Widget title;
|
|
public readonly Widget message;
|
|
public readonly ScrollController scrollController;
|
|
|
|
public override Widget build(BuildContext context) {
|
|
List<Widget> titleContentGroup = new List<Widget>();
|
|
if (title != null) {
|
|
titleContentGroup.Add(new Padding(
|
|
padding: EdgeInsets.only(
|
|
left: CupertinoActionSheetUtils._kContentHorizontalPadding,
|
|
right: CupertinoActionSheetUtils._kContentHorizontalPadding,
|
|
bottom: CupertinoActionSheetUtils._kContentVerticalPadding,
|
|
top: CupertinoActionSheetUtils._kContentVerticalPadding
|
|
),
|
|
child: new DefaultTextStyle(
|
|
style: message == null
|
|
? CupertinoActionSheetUtils._kActionSheetContentStyle
|
|
: CupertinoActionSheetUtils._kActionSheetContentStyle.copyWith(fontWeight: FontWeight.w600),
|
|
textAlign: TextAlign.center,
|
|
child: title
|
|
)
|
|
));
|
|
}
|
|
|
|
if (message != null) {
|
|
titleContentGroup.Add(
|
|
new Padding(
|
|
padding: EdgeInsets.only(
|
|
left: CupertinoActionSheetUtils._kContentHorizontalPadding,
|
|
right: CupertinoActionSheetUtils._kContentHorizontalPadding,
|
|
bottom: title == null ? CupertinoActionSheetUtils._kContentVerticalPadding : 22.0f,
|
|
top: title == null ? CupertinoActionSheetUtils._kContentVerticalPadding : 0.0f
|
|
),
|
|
child: new DefaultTextStyle(
|
|
style: title == null
|
|
? CupertinoActionSheetUtils._kActionSheetContentStyle.copyWith(
|
|
fontWeight: FontWeight.w600)
|
|
: CupertinoActionSheetUtils._kActionSheetContentStyle,
|
|
textAlign: TextAlign.center,
|
|
child: message
|
|
)
|
|
)
|
|
);
|
|
}
|
|
|
|
if (titleContentGroup.isEmpty()) {
|
|
return new SingleChildScrollView(
|
|
controller: scrollController,
|
|
child: new Container(
|
|
width: 0.0f,
|
|
height: 0.0f
|
|
)
|
|
);
|
|
}
|
|
|
|
|
|
if (titleContentGroup.Count > 1) {
|
|
titleContentGroup.Insert(1, new Padding(padding: EdgeInsets.only(top: 8.0f)));
|
|
}
|
|
|
|
return new CupertinoScrollbar(
|
|
child: new SingleChildScrollView(
|
|
controller: scrollController,
|
|
child: new Column(
|
|
mainAxisSize: MainAxisSize.max,
|
|
crossAxisAlignment: CrossAxisAlignment.stretch,
|
|
children: titleContentGroup
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
|
|
class _CupertinoAlertActionSection : StatefulWidget {
|
|
public _CupertinoAlertActionSection(
|
|
List<Widget> children,
|
|
Key key = null,
|
|
ScrollController scrollController = null,
|
|
bool hasCancelButton = false
|
|
) : base(key: key) {
|
|
D.assert(children != null);
|
|
this.children = children;
|
|
this.scrollController = scrollController;
|
|
this.hasCancelButton = hasCancelButton;
|
|
}
|
|
|
|
public readonly List<Widget> children;
|
|
public readonly ScrollController scrollController;
|
|
public readonly bool hasCancelButton;
|
|
|
|
public override State createState() {
|
|
return new _CupertinoAlertActionSectionState();
|
|
}
|
|
}
|
|
|
|
class _CupertinoAlertActionSectionState : State<_CupertinoAlertActionSection> {
|
|
public override Widget build(BuildContext context) {
|
|
float devicePixelRatio = MediaQuery.of(context).devicePixelRatio;
|
|
|
|
List<Widget> interactiveButtons = new List<Widget>();
|
|
for (int i = 0; i < widget.children.Count; i += 1) {
|
|
interactiveButtons.Add(new _PressableActionSheetActionButton(
|
|
child: widget.children[i]
|
|
)
|
|
);
|
|
}
|
|
|
|
return new CupertinoScrollbar(
|
|
child: new SingleChildScrollView(
|
|
controller: widget.scrollController,
|
|
child: new _CupertinoAlertActionsRenderWidget(
|
|
actionButtons: interactiveButtons,
|
|
dividerThickness: CupertinoActionSheetUtils._kDividerThickness / devicePixelRatio,
|
|
hasCancelButton: widget.hasCancelButton
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
class _PressableActionSheetActionButton : StatefulWidget {
|
|
public _PressableActionSheetActionButton(
|
|
Widget child
|
|
) {
|
|
this.child = child;
|
|
}
|
|
|
|
public readonly Widget child;
|
|
|
|
public override State createState() {
|
|
return new _PressableActionSheetActionButtonState();
|
|
}
|
|
}
|
|
|
|
class _PressableActionSheetActionButtonState : State<_PressableActionSheetActionButton> {
|
|
bool _isPressed = false;
|
|
|
|
public override Widget build(BuildContext context) {
|
|
return new _ActionSheetActionButtonParentDataWidget(
|
|
isPressed: _isPressed,
|
|
child: new GestureDetector(
|
|
behavior: HitTestBehavior.opaque,
|
|
onTapDown: (TapDownDetails details) => setState(() => { _isPressed = true; }),
|
|
onTapUp: (TapUpDetails details) => setState(() => { _isPressed = false; }),
|
|
onTapCancel: () => setState(() => _isPressed = false),
|
|
child: widget.child
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
class _ActionSheetActionButtonParentDataWidget : ParentDataWidget<_CupertinoAlertActionsRenderWidget> {
|
|
public _ActionSheetActionButtonParentDataWidget(
|
|
Widget child,
|
|
bool isPressed = false,
|
|
Key key = null
|
|
) : base(key: key, child: child) {
|
|
this.isPressed = isPressed;
|
|
}
|
|
|
|
public readonly bool isPressed;
|
|
|
|
public override void applyParentData(RenderObject renderObject) {
|
|
D.assert(renderObject.parentData is _ActionSheetActionButtonParentData);
|
|
_ActionSheetActionButtonParentData parentData =
|
|
renderObject.parentData as _ActionSheetActionButtonParentData;
|
|
if (parentData.isPressed != isPressed) {
|
|
parentData.isPressed = isPressed;
|
|
AbstractNodeMixinDiagnosticableTree targetParent = renderObject.parent;
|
|
if (targetParent is RenderObject) {
|
|
((RenderObject) targetParent).markNeedsPaint();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class _ActionSheetActionButtonParentData : MultiChildLayoutParentData {
|
|
public _ActionSheetActionButtonParentData(
|
|
bool isPressed = false
|
|
) {
|
|
this.isPressed = isPressed;
|
|
}
|
|
|
|
public bool isPressed;
|
|
}
|
|
|
|
class _CupertinoAlertActionsRenderWidget : MultiChildRenderObjectWidget {
|
|
public _CupertinoAlertActionsRenderWidget(
|
|
List<Widget> actionButtons,
|
|
Key key = null,
|
|
float dividerThickness = 0.0f,
|
|
bool hasCancelButton = false
|
|
) : base(key: key, children: actionButtons) {
|
|
_dividerThickness = dividerThickness;
|
|
_hasCancelButton = hasCancelButton;
|
|
}
|
|
|
|
readonly float _dividerThickness;
|
|
readonly bool _hasCancelButton;
|
|
|
|
public override RenderObject createRenderObject(BuildContext context) {
|
|
return new _RenderCupertinoAlertActions(
|
|
dividerThickness: _dividerThickness,
|
|
hasCancelButton: _hasCancelButton
|
|
);
|
|
}
|
|
|
|
public override void updateRenderObject(BuildContext context, RenderObject renderObject) {
|
|
((_RenderCupertinoAlertActions) renderObject).dividerThickness = _dividerThickness;
|
|
((_RenderCupertinoAlertActions) renderObject).hasCancelButton = _hasCancelButton;
|
|
}
|
|
}
|
|
|
|
class _RenderCupertinoAlertActions : RenderBoxContainerDefaultsMixinContainerRenderObjectMixinRenderBox<RenderBox,
|
|
MultiChildLayoutParentData> {
|
|
public _RenderCupertinoAlertActions(
|
|
List<RenderBox> children = null,
|
|
float dividerThickness = 0.0f,
|
|
bool hasCancelButton = false
|
|
) {
|
|
_dividerThickness = dividerThickness;
|
|
_hasCancelButton = hasCancelButton;
|
|
addAll(children ?? new List<RenderBox>());
|
|
}
|
|
|
|
public float dividerThickness {
|
|
get { return _dividerThickness; }
|
|
set {
|
|
if (value == _dividerThickness) {
|
|
return;
|
|
}
|
|
|
|
_dividerThickness = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
float _dividerThickness;
|
|
|
|
bool _hasCancelButton;
|
|
|
|
public bool hasCancelButton {
|
|
get { return _hasCancelButton; }
|
|
set {
|
|
if (value == _hasCancelButton) {
|
|
return;
|
|
}
|
|
|
|
_hasCancelButton = value;
|
|
markNeedsLayout();
|
|
}
|
|
}
|
|
|
|
|
|
readonly Paint _buttonBackgroundPaint = new Paint() {
|
|
color = CupertinoActionSheetUtils._kBackgroundColor,
|
|
style = PaintingStyle.fill
|
|
};
|
|
|
|
readonly Paint _pressedButtonBackgroundPaint = new Paint() {
|
|
color = CupertinoActionSheetUtils._kPressedColor,
|
|
style = PaintingStyle.fill
|
|
};
|
|
|
|
readonly Paint _dividerPaint = new Paint() {
|
|
color = CupertinoActionSheetUtils._kButtonDividerColor,
|
|
style = PaintingStyle.fill
|
|
};
|
|
|
|
public override void setupParentData(RenderObject child) {
|
|
if (!(child.parentData is _ActionSheetActionButtonParentData)) {
|
|
child.parentData = new _ActionSheetActionButtonParentData();
|
|
}
|
|
}
|
|
|
|
protected override float computeMinIntrinsicWidth(float height) {
|
|
return constraints.minWidth;
|
|
}
|
|
|
|
protected override float computeMaxIntrinsicWidth(float height) {
|
|
return constraints.maxWidth;
|
|
}
|
|
|
|
protected override float computeMinIntrinsicHeight(float width) {
|
|
if (childCount == 0) {
|
|
return 0.0f;
|
|
}
|
|
|
|
if (childCount == 1) {
|
|
return firstChild.computeMaxIntrinsicHeight(width) + dividerThickness;
|
|
}
|
|
|
|
if (hasCancelButton && childCount < 4) {
|
|
return _computeMinIntrinsicHeightWithCancel(width);
|
|
}
|
|
|
|
return _computeMinIntrinsicHeightWithoutCancel(width);
|
|
}
|
|
|
|
float _computeMinIntrinsicHeightWithCancel(float width) {
|
|
D.assert(childCount == 2 || childCount == 3);
|
|
if (childCount == 2) {
|
|
return firstChild.getMinIntrinsicHeight(width)
|
|
+ childAfter(firstChild).getMinIntrinsicHeight(width)
|
|
+ dividerThickness;
|
|
}
|
|
|
|
return firstChild.getMinIntrinsicHeight(width)
|
|
+ childAfter(firstChild).getMinIntrinsicHeight(width)
|
|
+ childAfter(childAfter(firstChild)).getMinIntrinsicHeight(width)
|
|
+ (dividerThickness * 2);
|
|
}
|
|
|
|
float _computeMinIntrinsicHeightWithoutCancel(float width) {
|
|
D.assert(childCount >= 2);
|
|
return firstChild.getMinIntrinsicHeight(width)
|
|
+ dividerThickness
|
|
+ (0.5f * childAfter(firstChild).getMinIntrinsicHeight(width));
|
|
}
|
|
|
|
protected internal override float computeMaxIntrinsicHeight(float width) {
|
|
if (childCount == 0) {
|
|
return 0.0f;
|
|
}
|
|
|
|
if (childCount == 1) {
|
|
return firstChild.computeMaxIntrinsicHeight(width) + dividerThickness;
|
|
}
|
|
|
|
return _computeMaxIntrinsicHeightStacked(width);
|
|
}
|
|
|
|
float _computeMaxIntrinsicHeightStacked(float width) {
|
|
D.assert(childCount >= 2);
|
|
float allDividersHeight = (childCount - 1) * dividerThickness;
|
|
float heightAccumulation = allDividersHeight;
|
|
RenderBox button = firstChild;
|
|
while (button != null) {
|
|
heightAccumulation += button.getMaxIntrinsicHeight(width);
|
|
button = childAfter(button);
|
|
}
|
|
|
|
return heightAccumulation;
|
|
}
|
|
|
|
protected override void performLayout() {
|
|
BoxConstraints perButtonConstraints = constraints.copyWith(
|
|
minHeight: 0.0f,
|
|
maxHeight: float.PositiveInfinity
|
|
);
|
|
RenderBox child = firstChild;
|
|
int index = 0;
|
|
float verticalOffset = 0.0f;
|
|
while (child != null) {
|
|
child.layout(
|
|
perButtonConstraints,
|
|
parentUsesSize: true
|
|
);
|
|
D.assert(child.parentData is MultiChildLayoutParentData);
|
|
MultiChildLayoutParentData parentData = child.parentData as MultiChildLayoutParentData;
|
|
parentData.offset = new Offset(0.0f, verticalOffset);
|
|
verticalOffset += child.size.height;
|
|
if (index < childCount - 1) {
|
|
verticalOffset += dividerThickness;
|
|
}
|
|
|
|
index += 1;
|
|
child = childAfter(child);
|
|
}
|
|
|
|
size = constraints.constrain(
|
|
new Size(constraints.maxWidth, verticalOffset)
|
|
);
|
|
}
|
|
|
|
public override void paint(PaintingContext context, Offset offset) {
|
|
Canvas canvas = context.canvas;
|
|
_drawButtonBackgroundsAndDividersStacked(canvas, offset);
|
|
_drawButtons(context, offset);
|
|
}
|
|
|
|
void _drawButtonBackgroundsAndDividersStacked(Canvas canvas, Offset offset) {
|
|
Offset dividerOffset = new Offset(0.0f, dividerThickness);
|
|
Path backgroundFillPath = new Path();
|
|
// fillType = PathFillType.evenOdd
|
|
backgroundFillPath.addRect(Rect.fromLTWH(0.0f, 0.0f, size.width, size.height));
|
|
|
|
Path pressedBackgroundFillPath = new Path();
|
|
Path dividersPath = new Path();
|
|
Offset accumulatingOffset = offset;
|
|
RenderBox child = firstChild;
|
|
RenderBox prevChild = null;
|
|
while (child != null) {
|
|
D.assert(child.parentData is _ActionSheetActionButtonParentData);
|
|
_ActionSheetActionButtonParentData currentButtonParentData =
|
|
child.parentData as _ActionSheetActionButtonParentData;
|
|
bool isButtonPressed = currentButtonParentData.isPressed;
|
|
bool isPrevButtonPressed = false;
|
|
if (prevChild != null) {
|
|
D.assert(prevChild.parentData is _ActionSheetActionButtonParentData);
|
|
_ActionSheetActionButtonParentData previousButtonParentData =
|
|
prevChild.parentData as _ActionSheetActionButtonParentData;
|
|
isPrevButtonPressed = previousButtonParentData.isPressed;
|
|
}
|
|
|
|
bool isDividerPresent = child != firstChild;
|
|
bool isDividerPainted = isDividerPresent && !(isButtonPressed || isPrevButtonPressed);
|
|
Rect dividerRect = Rect.fromLTWH(
|
|
accumulatingOffset.dx,
|
|
accumulatingOffset.dy, size.width, _dividerThickness
|
|
);
|
|
Rect buttonBackgroundRect = Rect.fromLTWH(
|
|
accumulatingOffset.dx,
|
|
accumulatingOffset.dy + (isDividerPresent ? dividerThickness : 0.0f), size.width,
|
|
child.size.height
|
|
);
|
|
if (isButtonPressed) {
|
|
backgroundFillPath.addRect(buttonBackgroundRect);
|
|
pressedBackgroundFillPath.addRect(buttonBackgroundRect);
|
|
}
|
|
|
|
if (isDividerPainted) {
|
|
backgroundFillPath.addRect(dividerRect);
|
|
dividersPath.addRect(dividerRect);
|
|
}
|
|
|
|
accumulatingOffset += (isDividerPresent ? dividerOffset : Offset.zero)
|
|
+ new Offset(0.0f, child.size.height);
|
|
prevChild = child;
|
|
child = childAfter(child);
|
|
}
|
|
|
|
canvas.drawPath(backgroundFillPath, _buttonBackgroundPaint);
|
|
canvas.drawPath(pressedBackgroundFillPath, _pressedButtonBackgroundPaint);
|
|
canvas.drawPath(dividersPath, _dividerPaint);
|
|
}
|
|
|
|
void _drawButtons(PaintingContext context, Offset offset) {
|
|
RenderBox child = firstChild;
|
|
while (child != null) {
|
|
MultiChildLayoutParentData childParentData = child.parentData as MultiChildLayoutParentData;
|
|
context.paintChild(child, childParentData.offset + offset);
|
|
child = childAfter(child);
|
|
}
|
|
}
|
|
|
|
protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null) {
|
|
return defaultHitTestChildren(result, position: position);
|
|
}
|
|
}
|
|
}
|