public override Widget build(BuildContext context)
{
D.assert(WidgetsD.debugCheckHasDirectionality(context));
List <Widget> children = new List <Widget>();
if (this.leading != null)
{
children.Add(new LayoutId(id: _ToolbarSlot.leading, child: this.leading));
}
if (this.middle != null)
{
children.Add(new LayoutId(id: _ToolbarSlot.middle, child: this.middle));
}
if (this.trailing != null)
{
children.Add(new LayoutId(id: _ToolbarSlot.trailing, child: this.trailing));
}
TextDirection textDirection = Directionality.of(context);
return(new CustomMultiChildLayout(
layoutDelegate: new _ToolbarLayout(
centerMiddle: this.centerMiddle,
middleSpacing: this.middleSpacing,
textDirection: textDirection
),
children: children
));
}
public override Widget build(BuildContext context)
{
D.assert(WidgetsD.debugCheckHasDirectionality(context));
return(new CustomPaint(
foregroundPainter: new BannerPainter(
message: this.message,
location: this.location,
color: this.color,
textStyle: this.textStyle
),
child: this.child
));
}
public override Widget build(BuildContext context)
{
D.assert(WidgetsD.debugCheckHasDirectionality(context));
return(Positioned.directional(
textDirection: Directionality.of(context: context),
child: widget.child,
start: _start?.evaluate(animation: animation),
top: _top?.evaluate(animation: animation),
end: _end?.evaluate(animation: animation),
bottom: _bottom?.evaluate(animation: animation),
width: _width?.evaluate(animation: animation),
height: _height?.evaluate(animation: animation)
));
}
public override Widget build(BuildContext context)
{
D.assert((textDirection != null && layoutDirection != null) || WidgetsD.debugCheckHasDirectionality(context));
return(new CustomPaint(
foregroundPainter: new BannerPainter(
message: message,
textDirection: textDirection ?? Directionality.of(context),
location: location,
layoutDirection: layoutDirection ?? Directionality.of(context),
color: color,
textStyle: textStyle
),
child: child
));
}
AxisDirection?_getDirection(BuildContext context)
{
switch (widget.scrollDirection)
{
case Axis.horizontal:
D.assert(WidgetsD.debugCheckHasDirectionality(context));
TextDirection textDirection = Directionality.of(context);
AxisDirection?axisDirection = AxisUtils.textDirectionToAxisDirection(textDirection);
return(widget.reverse ? AxisUtils.flipAxisDirection(axisDirection) : axisDirection);
case Axis.vertical:
return(widget.reverse ? AxisDirection.up : AxisDirection.down);
}
throw new UIWidgetsError("fail to get axis direction");
}
public override Widget build(BuildContext context)
{
base.build(context); // See AutomaticKeepAliveClientMixin.
D.assert(!this._directionIsXAxis || WidgetsD.debugCheckHasDirectionality(context));
Widget background = this.widget.background;
if (this.widget.secondaryBackground != null)
{
DismissDirection?direction = this._dismissDirection;
if (direction == DismissDirection.endToStart || direction == DismissDirection.up)
{
background = this.widget.secondaryBackground;
}
}
if (this._resizeAnimation != null)
{
// we've been dragged aside, and are now resizing.
D.assert(() => {
if (this._resizeAnimation.status != AnimationStatus.forward)
{
D.assert(this._resizeAnimation.status == AnimationStatus.completed);
throw new UIWidgetsError(
"A dismissed Dismissible widget is still part of the tree.\n" +
"Make sure to implement the onDismissed handler and to immediately remove the Dismissible\n" +
"widget from the application once that handler has fired."
);
}
return(true);
});
return(new SizeTransition(
sizeFactor: this._resizeAnimation,
axis: this._directionIsXAxis ? Axis.vertical : Axis.horizontal,
child: new SizedBox(
width: this._sizePriorToCollapse.width,
height: this._sizePriorToCollapse.height,
child: background
)
));
}
Widget content = new SlideTransition(
position: this._moveAnimation,
child: this.widget.child
);
if (background != null)
{
List <Widget> children = new List <Widget> {
};
if (!this._moveAnimation.isDismissed)
{
children.Add(Positioned.fill(
child: new ClipRect(
clipper: new _DismissibleClipper(
axis: this._directionIsXAxis ? Axis.horizontal : Axis.vertical,
moveAnimation: this._moveAnimation
),
child: background
)
));
}
children.Add(content);
content = new Stack(children: children);
}
return(new GestureDetector(
onHorizontalDragStart: this._directionIsXAxis ? (GestureDragStartCallback)this._handleDragStart : null,
onHorizontalDragUpdate: this._directionIsXAxis
? (GestureDragUpdateCallback)this._handleDragUpdate
: null,
onHorizontalDragEnd: this._directionIsXAxis ? (GestureDragEndCallback)this._handleDragEnd : null,
onVerticalDragStart: this._directionIsXAxis ? null : (GestureDragStartCallback)this._handleDragStart,
onVerticalDragUpdate: this._directionIsXAxis
? null
: (GestureDragUpdateCallback)this._handleDragUpdate,
onVerticalDragEnd: this._directionIsXAxis ? null : (GestureDragEndCallback)this._handleDragEnd,
behavior: HitTestBehavior.opaque,
child: content,
dragStartBehavior: this.widget.dragStartBehavior
));
}
public override Widget build(BuildContext context)
{
D.assert(this.textDirection != null || WidgetsD.debugCheckHasDirectionality(context));
TextDirection textDirection = this.textDirection ?? Directionality.of(context);
IconThemeData iconTheme = IconTheme.of(context);
float iconSize = size ?? iconTheme.size.Value;
if (icon == null)
{
return(new SizedBox(width: iconSize, height: iconSize));
}
float iconOpacity = iconTheme.opacity.Value;
Color iconColor = color ?? iconTheme.color;
if (iconOpacity != 1.0)
{
iconColor = iconColor.withOpacity(iconColor.opacity * iconOpacity);
}
Widget iconWidget = new RichText(
overflow: TextOverflow.visible, // Never clip.
textDirection: textDirection, // Since we already fetched it for the assert...
text: new TextSpan(
text: new string(new[] { (char)icon.codePoint }),
style: new TextStyle(
inherit: false,
color: iconColor,
fontSize: iconSize,
fontFamily: icon.fontFamily
)
)
);
var matrix = Matrix4.identity();
matrix.scale(-1.0f, 1.0f, 1.0f);
if (icon.matchTextDirection)
{
switch (textDirection)
{
case TextDirection.rtl:
iconWidget = new Transform(
transform: matrix,
alignment: Alignment.center,
transformHitTests: false,
child: iconWidget
);
break;
case TextDirection.ltr:
break;
}
}
return(new SizedBox(
width: iconSize,
height: iconSize,
child: new Center(
child: iconWidget
)
));
}
