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upgrade snack_bar

/siyaoH-1.17-PlatformMessage
xingweizhu 4 年前
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db668c8e
共有 2 个文件被更改，包括 217 次插入 和 86 次删除
  1. 297
      com.unity.uiwidgets/Runtime/material/snack_bar.cs
  2. 6
      com.unity.uiwidgets/Runtime/material/snack_bar_theme.cs

297
com.unity.uiwidgets/Runtime/material/snack_bar.cs
查看文件


using Unity.UIWidgets.painting;
using Unity.UIWidgets.rendering;
using Unity.UIWidgets.scheduler2;
using Unity.UIWidgets.service;
using TextStyle = Unity.UIWidgets.painting.TextStyle;
public const float _kSnackBarPadding = 24.0f;
public const float _kSingleLineVerticalPadding = 14.0f;
public static readonly Color _kSnackBackground = new Color(0xFF323232);
public const float _singleLineVerticalPadding = 14.0f;
public static readonly TimeSpan _kSnackBarTransitionDuration = new TimeSpan(0, 0, 0, 0, 250);
public static readonly TimeSpan _kSnackBarDisplayDuration = new TimeSpan(0, 0, 0, 0, 4000);
public static readonly TimeSpan _snackBarTransitionDuration = new TimeSpan(0, 0, 0, 0, 250);
public static readonly TimeSpan _snackBarDisplayDuration = new TimeSpan(0, 0, 0, 0, 4000);
public static readonly Curve _snackBarFadeCurve = new Interval(0.72f, 1.0f, curve: Curves.fastOutSlowIn);
public static readonly Curve _snackBarFadeInCurve = new Interval(0.45f, 1.0f, curve: Curves.fastOutSlowIn);
public static readonly Curve _snackBarFadeOutCurve = new Interval(0.72f, 1.0f, curve: Curves.fastOutSlowIn);
}
public enum SnackBarClosedReason {

}
public override Widget build(BuildContext context) {
SnackBarThemeData snackBarTheme = Theme.of(context).snackBarTheme;
Color textColor = widget.textColor ?? snackBarTheme.actionTextColor;
Color disabledTextColor = widget.disabledTextColor ?? snackBarTheme.disabledActionTextColor;
textColor: widget.textColor,
disabledTextColor: widget.disabledTextColor
textColor: textColor,
disabledTextColor: disabledTextColor
public class SnackBar : StatelessWidget {
public class SnackBar : StatefulWidget {
float? elevation = null,
ShapeBorder shape = null,
SnackBarBehavior? behavior = null,
Animation<float> animation = null
Animation<float> animation = null,
VoidCallback onVisible = null
duration = duration ?? SnackBarUtils._kSnackBarDisplayDuration;
duration = duration ?? SnackBarUtils._snackBarDisplayDuration;
D.assert(elevation == null || elevation >= 0.0);
this.elevation = elevation;
this.shape = shape;
this.behavior = behavior;
this.onVisible = onVisible;
}
public readonly Widget content;

public readonly float? elevation;
public readonly ShapeBorder shape;
public readonly SnackBarBehavior? behavior;
public readonly SnackBarAction action;
public readonly TimeSpan duration;

public readonly VoidCallback onVisible;
static AnimationController createAnimationController(TickerProvider vsync) {
return new AnimationController(
duration: SnackBarUtils._snackBarTransitionDuration,
debugLabel: "SnackBar",
vsync: vsync
);
}
SnackBar withAnimation(Animation<float> newAnimation, Key fallbackKey = null) {
return new SnackBar(
key: key ?? fallbackKey,
content: content,
backgroundColor: backgroundColor,
elevation: elevation,
shape: shape,
behavior: behavior,
action: action,
duration: duration,
animation: newAnimation,
onVisible: onVisible
);
}
public override State createState() {
return new _SnackBarState();
}
}
class _SnackBarState : State<SnackBar> {
bool _wasVisible = false;
public override void initState() {
base.initState();
widget.animation.addStatusListener(_onAnimationStatusChanged);
}
public override void didUpdateWidget(StatefulWidget oldWidget) {
var _oldWidget = (SnackBar) oldWidget;
if (widget.animation != _oldWidget.animation) {
_oldWidget.animation.removeStatusListener(_onAnimationStatusChanged);
widget.animation.addStatusListener(_onAnimationStatusChanged);
}
base.didUpdateWidget(oldWidget);
}
public override void dispose() {
widget.animation.removeStatusListener(_onAnimationStatusChanged);
base.dispose();
}
void _onAnimationStatusChanged(AnimationStatus animationStatus) {
switch (animationStatus) {
case AnimationStatus.dismissed:
case AnimationStatus.forward:
case AnimationStatus.reverse:
break;
case AnimationStatus.completed:
if (widget.onVisible != null && !_wasVisible) {
widget.onVisible();
}
_wasVisible = true;
break;
}
}
D.assert(animation != null);
D.assert(widget.animation != null);
ThemeData theme = Theme.of(context);
ColorScheme colorScheme = theme.colorScheme;
SnackBarThemeData snackBarTheme = theme.snackBarTheme;
bool isThemeDark = theme.brightness == Brightness.dark;
ThemeData theme = Theme.of(context);
ThemeData darkTheme = new ThemeData(
brightness: Brightness.dark,
accentColor: theme.accentColor,
accentColorBrightness: theme.accentColorBrightness
Brightness brightness = isThemeDark ? Brightness.light : Brightness.dark;
Color themeBackgroundColor = isThemeDark
? colorScheme.onSurface
: Color.alphaBlend(colorScheme.onSurface.withOpacity(0.80f), colorScheme.surface);
ThemeData inverseTheme = new ThemeData(
brightness: brightness,
backgroundColor: themeBackgroundColor,
colorScheme: new ColorScheme(
primary: colorScheme.onPrimary,
primaryVariant: colorScheme.onPrimary,
secondary: isThemeDark ? colorScheme.primaryVariant : colorScheme.secondary,
secondaryVariant: colorScheme.onSecondary,
surface: colorScheme.onSurface,
background: themeBackgroundColor,
error: colorScheme.onError,
onPrimary: colorScheme.primary,
onSecondary: colorScheme.secondary,
onSurface: colorScheme.surface,
onBackground: colorScheme.background,
onError: colorScheme.error,
brightness: brightness
),
snackBarTheme: snackBarTheme
);
TextStyle contentTextStyle = snackBarTheme.contentTextStyle ?? inverseTheme.textTheme.subtitle1;
SnackBarBehavior snackBarBehavior = widget.behavior ?? snackBarTheme.behavior ?? SnackBarBehavior.fix;
bool isFloatingSnackBar = snackBarBehavior == SnackBarBehavior.floating;
float snackBarPadding = isFloatingSnackBar ? 16.0f : 24.0f;
CurvedAnimation heightAnimation =
new CurvedAnimation(parent: widget.animation, curve: SnackBarUtils._snackBarHeightCurve);
CurvedAnimation fadeInAnimation =
new CurvedAnimation(parent: widget.animation, curve: SnackBarUtils._snackBarFadeInCurve);
CurvedAnimation fadeOutAnimation = new CurvedAnimation(
parent: widget.animation,
curve: SnackBarUtils._snackBarFadeOutCurve,
reverseCurve: new Threshold(0.0f)
List<Widget> children = new List<Widget> {
new SizedBox(width: SnackBarUtils._kSnackBarPadding),
var childrenList = new List<Widget>() {
new SizedBox(width: snackBarPadding),
padding: EdgeInsets.symmetric(vertical: SnackBarUtils._kSingleLineVerticalPadding),
padding: EdgeInsets.symmetric(vertical: SnackBarUtils._singleLineVerticalPadding),
style: darkTheme.textTheme.subhead,
child: content)
style: contentTextStyle,
child: widget.content
)
if (action != null) {
children.Add(ButtonTheme.bar(
padding: EdgeInsets.symmetric(horizontal: SnackBarUtils._kSnackBarPadding),
if (widget.action != null) {
childrenList.Add(new ButtonTheme(
child: action
minWidth: 64.0f,
padding: EdgeInsets.symmetric(horizontal: snackBarPadding),
child: widget.action
children.Add(new SizedBox(width: SnackBarUtils._kSnackBarPadding));
childrenList.Add(new SizedBox(width: snackBarPadding));
CurvedAnimation heightAnimation =
new CurvedAnimation(parent: animation, curve: SnackBarUtils._snackBarHeightCurve);
CurvedAnimation fadeAnimation = new CurvedAnimation(parent: animation,
curve: SnackBarUtils._snackBarFadeCurve, reverseCurve: new Threshold(0.0f));
Widget snackbar = new SafeArea(
Widget snackBar = new SafeArea(
bottom: !isFloatingSnackBar,
children: children,
crossAxisAlignment: CrossAxisAlignment.center
crossAxisAlignment: CrossAxisAlignment.center,
children: childrenList
)
);
float elevation = widget.elevation ?? snackBarTheme.elevation ?? 6.0f;
Color backgroundColor =
widget.backgroundColor ?? snackBarTheme.backgroundColor ?? inverseTheme.backgroundColor;
ShapeBorder shape = widget.shape
?? snackBarTheme.shape
?? (isFloatingSnackBar
? new RoundedRectangleBorder(borderRadius: BorderRadius.circular(4.0f))
: null);
snackBar = new Material(
shape: shape,
elevation: elevation,
color: backgroundColor,
child: new Theme(
data: inverseTheme,
child: mediaQueryData.accessibleNavigation
? snackBar
: new FadeTransition(
opacity: fadeOutAnimation,
child: snackBar
)
snackbar = new Dismissible(
if (isFloatingSnackBar) {
snackBar = new Padding(
padding: EdgeInsets.fromLTRB(15.0f, 5.0f, 15.0f, 10.0f),
child: snackBar
);
}
snackBar = new Dismissible(
key: Key.key("dismissible"),
direction: DismissDirection.down,
resizeDuration: null,

child: new Material(
elevation: 6.0f,
color: backgroundColor ?? SnackBarUtils._kSnackBackground,
child: new Theme(
data: darkTheme,
child: mediaQueryData.accessibleNavigation
? snackbar
: new FadeTransition(
opacity: fadeAnimation,
child: snackbar
)
)
)
child: snackBar
return new ClipRect(
child: mediaQueryData.accessibleNavigation
? snackbar
: new AnimatedBuilder(
animation: heightAnimation,
builder: (BuildContext subContext, Widget child) => {
return new Align(
alignment: Alignment.topLeft,
heightFactor: heightAnimation.value,
child: child
);
},
child: snackbar
)
);
}
public static AnimationController createAnimationController(TickerProvider vsync) {
return new AnimationController(
duration: SnackBarUtils._kSnackBarTransitionDuration,
debugLabel: "SnackBar",
vsync: vsync
);
}
Widget snackBarTransition = null;
if (mediaQueryData.accessibleNavigation) {
snackBarTransition = snackBar;
}
else if (isFloatingSnackBar) {
snackBarTransition = new FadeTransition(
opacity: fadeInAnimation,
child: snackBar
);
}
else {
snackBarTransition = new AnimatedBuilder(
animation: heightAnimation,
builder: (BuildContext subContext, Widget subChild) => {
return new Align(
alignment: AlignmentDirectional.topStart,
heightFactor: heightAnimation.value,
child: subChild
);
},
child: snackBar
);
}
public SnackBar withAnimation(Animation<float> newAnimation, Key fallbackKey = null) {
return new SnackBar(
key: key ?? fallbackKey,
content: content,
backgroundColor: backgroundColor,
action: action,
duration: duration,
animation: newAnimation
);
return new ClipRect(child: snackBarTransition);
}
}
}

6
com.unity.uiwidgets/Runtime/material/snack_bar_theme.cs
查看文件


TextStyle contentTextStyle,
float? elevation,
ShapeBorder shape,
SnackBarBehavior behavior
SnackBarBehavior? behavior
) {
D.assert(elevation == null || elevation >= 0.0f);

public readonly ShapeBorder shape;
public readonly SnackBarBehavior behavior;
public readonly SnackBarBehavior? behavior;
public SnackBarThemeData copyWith(
Color backgroundColor,

new DiagnosticsProperty<TextStyle>("contentTextStyle", contentTextStyle, defaultValue: null));
properties.add(new FloatProperty("elevation", elevation, defaultValue: null));
properties.add(new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: null));
properties.add(new DiagnosticsProperty<SnackBarBehavior>("behavior", behavior, defaultValue: null));
properties.add(new DiagnosticsProperty<SnackBarBehavior?>("behavior", behavior, defaultValue: null));
}
public static bool operator ==(SnackBarThemeData self, SnackBarThemeData other) {

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