public override Widget build(BuildContext context)
{
D.assert(MaterialD.debugCheckHasMaterialLocalizations(context));
ThemeData themeData = Theme.of(context);
ScaffoldState scaffold = Scaffold.of(context, nullOk: true);
ModalRoute parentRoute = ModalRoute.of(context);
bool hasDrawer = scaffold?.hasDrawer ?? false;
bool hasEndDrawer = scaffold?.hasEndDrawer ?? false;
bool canPop = parentRoute?.canPop ?? false;
bool useCloseButton = parentRoute is PageRoute && ((PageRoute)parentRoute).fullscreenDialog;
IconThemeData appBarIconTheme = this.widget.iconTheme ?? themeData.primaryIconTheme;
TextStyle centerStyle = this.widget.textTheme?.title ?? themeData.primaryTextTheme.title;
TextStyle sideStyle = this.widget.textTheme?.body1 ?? themeData.primaryTextTheme.body1;
if (this.widget.toolbarOpacity != 1.0f)
{
float opacity =
new Interval(0.25f, 1.0f, curve: Curves.fastOutSlowIn).transform(this.widget.toolbarOpacity);
if (centerStyle?.color != null)
{
centerStyle = centerStyle.copyWith(color: centerStyle.color.withOpacity(opacity));
}
if (sideStyle?.color != null)
{
sideStyle = sideStyle.copyWith(color: sideStyle.color.withOpacity(opacity));
}
appBarIconTheme = appBarIconTheme.copyWith(
opacity: opacity * (appBarIconTheme.opacity ?? 1.0f)
);
}
Widget leading = this.widget.leading;
if (leading == null && this.widget.automaticallyImplyLeading)
{
if (hasDrawer)
{
leading = new IconButton(
icon: new Icon(Icons.menu),
onPressed: this._handleDrawerButton,
tooltip: MaterialLocalizations.of(context).openAppDrawerTooltip);
}
else
{
if (canPop)
{
leading = useCloseButton ? (Widget) new CloseButton() : new BackButton();
}
}
}
if (leading != null)
{
leading = new ConstrainedBox(
constraints: BoxConstraints.tightFor(width: AppBarUtils._kLeadingWidth),
child: leading);
}
Widget title = this.widget.title;
if (title != null)
{
title = new DefaultTextStyle(
style: centerStyle,
softWrap: false,
overflow: TextOverflow.ellipsis,
child: title);
}
Widget actions = null;
if (this.widget.actions != null && this.widget.actions.isNotEmpty())
{
actions = new Row(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: this.widget.actions);
}
else if (hasEndDrawer)
{
actions = new IconButton(
icon: new Icon(Icons.menu),
onPressed: this._handleDrawerButtonEnd,
tooltip: MaterialLocalizations.of(context).openAppDrawerTooltip);
}
Widget toolbar = new NavigationToolbar(
leading: leading,
middle: title,
trailing: actions,
centerMiddle: this.widget._getEffectiveCenterTitle(themeData).Value,
middleSpacing: this.widget.titleSpacing);
Widget appBar = new ClipRect(
child: new CustomSingleChildLayout(
layoutDelegate: new _ToolbarContainerLayout(),
child: IconTheme.merge(
data: appBarIconTheme,
child: new DefaultTextStyle(
style: sideStyle,
child: toolbar)
)
)
);
if (this.widget.bottom != null)
{
appBar = new Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: new List <Widget> {
new Flexible(
child: new ConstrainedBox(
constraints: new BoxConstraints(maxHeight: Constants.kToolbarHeight),
child: appBar
)
),
this.widget.bottomOpacity == 1.0f
? (Widget)this.widget.bottom
: new Opacity(
opacity: new Interval(0.25f, 1.0f, curve: Curves.fastOutSlowIn).transform(this.widget
.bottomOpacity),
child: this.widget.bottom
)
}
);
}
if (this.widget.primary)
{
appBar = new SafeArea(
top: true,
child: appBar);
}
appBar = new Align(
alignment: Alignment.topCenter,
child: appBar);
if (this.widget.flexibleSpace != null)
{
appBar = new Stack(
fit: StackFit.passthrough,
children: new List <Widget> {
this.widget.flexibleSpace,
appBar
}
);
}
Brightness brightness = this.widget.brightness ?? themeData.primaryColorBrightness;
SystemUiOverlayStyle overlayStyle = brightness == Brightness.dark
? SystemUiOverlayStyle.light
: SystemUiOverlayStyle.dark;
return(new AnnotatedRegion <SystemUiOverlayStyle>(
value: overlayStyle,
child: new Material(
color: this.widget.backgroundColor ?? themeData.primaryColor,
elevation: this.widget.elevation,
child: appBar
)));
}
public override Widget build(BuildContext context)
{
ThemeData theme = Theme.of(context);
ColorScheme colorScheme = theme.colorScheme;
TextTheme textTheme = theme.textTheme;
bool isDark = colorScheme.brightness == Brightness.dark;
Color primarySurfaceColor = isDark ? colorScheme.surface : colorScheme.primary;
Color onPrimarySurfaceColor = isDark ? colorScheme.onSurface : colorScheme.onPrimary;
TextStyle helpStyle = textTheme.overline?.copyWith(
color: onPrimarySurfaceColor
);
Text help = new Text(
helpText,
style: helpStyle,
maxLines: 1,
overflow: TextOverflow.ellipsis
);
Text title = new Text(
titleText,
style: titleStyle,
maxLines: (isShort || orientation == Orientation.portrait) ? 1 : 2,
overflow: TextOverflow.ellipsis
);
IconButton icon = new IconButton(
icon: new Icon(this.icon),
color: onPrimarySurfaceColor,
tooltip: iconTooltip,
onPressed: onIconPressed
);
switch (orientation)
{
case Orientation.portrait:
return(new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new Container(
height: DatePickerHeaderUtils._datePickerHeaderPortraitHeight,
color: primarySurfaceColor,
padding: EdgeInsetsDirectional.only(
start: 24f,
end: 12f
),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new SizedBox(height: 16f),
new Flexible(child: help),
new SizedBox(height: 38),
new Row(
children: new List <Widget> {
new Expanded(child: title),
icon,
}
),
}
)
)
}
));
case Orientation.landscape:
return(new Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new Container(
width: DatePickerHeaderUtils._datePickerHeaderLandscapeWidth,
color: primarySurfaceColor,
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new SizedBox(height: 16),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: DatePickerHeaderUtils._headerPaddingLandscape
),
child: help
),
new SizedBox(height: isShort ? 16 : 56),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: DatePickerHeaderUtils._headerPaddingLandscape
),
child: title
),
new Spacer(),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: 4
),
child: icon
),
}
)
),
}
));
}
return(null);
}