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147 行
5.2 KiB

using System;
using System.Collections.Generic;
using Unity.UIWidgets.animation;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.gestures;
using Unity.UIWidgets.painting;
using Unity.UIWidgets.rendering;
using Unity.UIWidgets.scheduler2;
using Unity.UIWidgets.ui;
using Unity.UIWidgets.widgets;
using TextStyle = Unity.UIWidgets.painting.TextStyle;
namespace Unity.UIWidgets.cupertino {
public class CupertinoContextMenuAction : StatefulWidget {
public CupertinoContextMenuAction(
Key key = null,
Widget child = null,
bool isDefaultAction = false,
bool isDestructiveAction = false,
VoidCallback onPressed = null,
IconData trailingIcon = null
) : base(key: key) {
D.assert(child != null);
this.child = child;
this.isDefaultAction = isDefaultAction;
this.isDestructiveAction = isDestructiveAction;
this.onPressed = onPressed;
this.trailingIcon = trailingIcon;
}
public readonly Widget child;
public readonly bool isDefaultAction;
public readonly bool isDestructiveAction;
public readonly VoidCallback onPressed;
public readonly IconData trailingIcon;
public override State createState() {
return new _CupertinoContextMenuActionState();
}
}
public class _CupertinoContextMenuActionState : State<CupertinoContextMenuAction> {
public static Color _kBackgroundColor = new Color(0xFFEEEEEE);
public static Color _kBackgroundColorPressed = new Color(0xFFDDDDDD);
public static float _kButtonHeight = 56.0f;
public static readonly TextStyle _kActionSheetActionStyle = new TextStyle(
fontFamily: ".SF UI Text",
inherit: false,
fontSize: 20.0f,
fontWeight: FontWeight.w400,
color: CupertinoColors.black,
textBaseline: TextBaseline.alphabetic
);
public GlobalKey _globalKey = GlobalKey<State<StatefulWidget>>.key();
bool _isPressed = false;
void onTapDown(TapDownDetails details) {
setState(()=>{
_isPressed = true;
});
}
void onTapUp(TapUpDetails details) {
setState(()=>{
_isPressed = false;
});
}
void onTapCancel() {
setState(()=>{
_isPressed = false;
});
}
TextStyle _textStyle {
get {
if (widget.isDefaultAction) {
return _kActionSheetActionStyle.copyWith(
fontWeight: FontWeight.w600
);
}
if (widget.isDestructiveAction) {
return _kActionSheetActionStyle.copyWith(
color: CupertinoColors.destructiveRed
);
}
return _kActionSheetActionStyle;
}
}
public override Widget build(BuildContext context) {
List<Widget> widgets = new List<Widget>();
widgets.Add(new Flexible(child: widget.child));
if (widget.trailingIcon != null) {
widgets.Add(new Icon(
widget.trailingIcon,
color: _textStyle.color));
}
return new GestureDetector(
key: _globalKey,
onTapDown: onTapDown,
onTapUp: onTapUp,
onTapCancel: onTapCancel,
onTap: widget.onPressed == null
? (GestureTapCallback) null
: () => {
if (widget.onPressed != null) {
widget.onPressed();
}
},
behavior: HitTestBehavior.opaque,
child:
new ConstrainedBox(
constraints: new BoxConstraints(
minHeight: _kButtonHeight
),
child:
new Container(
padding: EdgeInsets.symmetric(
vertical: 16.0f,
horizontal: 10.0f
),
decoration: new BoxDecoration(
color: _isPressed ? _kBackgroundColorPressed : _kBackgroundColor,
border: new Border(
bottom: new BorderSide(width: 1.0f, color: _kBackgroundColorPressed)
)
),
child: new DefaultTextStyle(
style: _textStyle,
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children:widgets
)
)
)
)
);
}
}
}