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stateless DynamicSliverAppBar

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Signed-off-by: dom <githubaccount56556@proton.me>
This commit is contained in:
dom
2026-03-12 13:01:05 +08:00
parent b8098fe067
commit 99128b2641
1 changed files with 36 additions and 47 deletions
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83
lib/common/widgets/dynamic_sliver_app_bar/dynamic_sliver_app_bar.dart
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@@ -202,7 +202,7 @@ class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
} }
} }
class DynamicSliverAppBar extends StatefulWidget { class DynamicSliverAppBar extends StatelessWidget {
const DynamicSliverAppBar.medium({ const DynamicSliverAppBar.medium({
super.key, super.key,
this.leading, this.leading,
@@ -297,62 +297,57 @@ class DynamicSliverAppBar extends StatefulWidget {
final EdgeInsetsGeometry? actionsPadding; final EdgeInsetsGeometry? actionsPadding;
@override
State<DynamicSliverAppBar> createState() => _DynamicSliverAppBarState();
}
class _DynamicSliverAppBarState extends State<DynamicSliverAppBar> {
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
final double bottomHeight = widget.bottom?.preferredSize.height ?? 0.0; final double bottomHeight = bottom?.preferredSize.height ?? 0.0;
final double topPadding = widget.primary final double topPadding = primary
? MediaQuery.viewPaddingOf(context).top ? MediaQuery.viewPaddingOf(context).top
: 0.0; : 0.0;
final double effectiveCollapsedHeight = final double effectiveCollapsedHeight =
topPadding + kToolbarHeight + bottomHeight + 1; topPadding + kToolbarHeight + bottomHeight + 1;
return SliverPinnedHeader( return SliverPinnedHeader(
onPerformLayout: widget.onPerformLayout, onPerformLayout: onPerformLayout,
delegate: _SliverAppBarDelegate( delegate: _SliverAppBarDelegate(
leading: widget.leading, leading: leading,
automaticallyImplyLeading: widget.automaticallyImplyLeading, automaticallyImplyLeading: automaticallyImplyLeading,
title: widget.title, title: title,
actions: widget.actions, actions: actions,
automaticallyImplyActions: widget.automaticallyImplyActions, automaticallyImplyActions: automaticallyImplyActions,
flexibleSpace: widget.flexibleSpace, flexibleSpace: flexibleSpace,
bottom: widget.bottom, bottom: bottom,
elevation: widget.elevation, elevation: elevation,
scrolledUnderElevation: widget.scrolledUnderElevation, scrolledUnderElevation: scrolledUnderElevation,
shadowColor: widget.shadowColor, shadowColor: shadowColor,
surfaceTintColor: widget.surfaceTintColor, surfaceTintColor: surfaceTintColor,
forceElevated: widget.forceElevated, forceElevated: forceElevated,
backgroundColor: widget.backgroundColor, backgroundColor: backgroundColor,
foregroundColor: widget.foregroundColor, foregroundColor: foregroundColor,
iconTheme: widget.iconTheme, iconTheme: iconTheme,
actionsIconTheme: widget.actionsIconTheme, actionsIconTheme: actionsIconTheme,
primary: widget.primary, primary: primary,
centerTitle: widget.centerTitle, centerTitle: centerTitle,
excludeHeaderSemantics: widget.excludeHeaderSemantics, excludeHeaderSemantics: excludeHeaderSemantics,
titleSpacing: widget.titleSpacing, titleSpacing: titleSpacing,
collapsedHeight: effectiveCollapsedHeight, collapsedHeight: effectiveCollapsedHeight,
topPadding: topPadding, topPadding: topPadding,
shape: widget.shape, shape: shape,
toolbarHeight: kToolbarHeight, toolbarHeight: kToolbarHeight,
leadingWidth: widget.leadingWidth, leadingWidth: leadingWidth,
toolbarTextStyle: widget.toolbarTextStyle, toolbarTextStyle: toolbarTextStyle,
titleTextStyle: widget.titleTextStyle, titleTextStyle: titleTextStyle,
systemOverlayStyle: widget.systemOverlayStyle, systemOverlayStyle: systemOverlayStyle,
forceMaterialTransparency: widget.forceMaterialTransparency, forceMaterialTransparency: forceMaterialTransparency,
useDefaultSemanticsOrder: widget.useDefaultSemanticsOrder, useDefaultSemanticsOrder: useDefaultSemanticsOrder,
clipBehavior: widget.clipBehavior, clipBehavior: clipBehavior,
actionsPadding: widget.actionsPadding, actionsPadding: actionsPadding,
), ),
); );
} }
} }
/// ref [FlexibleSpaceBar] /// ref [FlexibleSpaceBar]
class DynamicFlexibleSpaceBar extends StatefulWidget { class DynamicFlexibleSpaceBar extends StatelessWidget {
const DynamicFlexibleSpaceBar({ const DynamicFlexibleSpaceBar({
super.key, super.key,
required this.background, required this.background,
@@ -363,14 +358,8 @@ class DynamicFlexibleSpaceBar extends StatefulWidget {
final CollapseMode collapseMode; final CollapseMode collapseMode;
@override
State<DynamicFlexibleSpaceBar> createState() =>
_DynamicFlexibleSpaceBarState();
}
class _DynamicFlexibleSpaceBarState extends State<DynamicFlexibleSpaceBar> {
double _getCollapsePadding(double t, FlexibleSpaceBarSettings settings) { double _getCollapsePadding(double t, FlexibleSpaceBarSettings settings) {
switch (widget.collapseMode) { switch (collapseMode) {
case CollapseMode.pin: case CollapseMode.pin:
return -(settings.maxExtent - settings.currentExtent); return -(settings.maxExtent - settings.currentExtent);
case CollapseMode.none: case CollapseMode.none:
@@ -427,7 +416,7 @@ class _DynamicFlexibleSpaceBarState extends State<DynamicFlexibleSpaceBar> {
// through the app bar when it is collapsed. // through the app bar when it is collapsed.
alwaysIncludeSemantics: true, alwaysIncludeSemantics: true,
opacity: opacity, opacity: opacity,
child: widget.background, child: background,
), ),
), ),
); );