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Clean up mouse region code (#96636)
* Clean up mouse region code * remove even more code
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@ -6185,7 +6185,7 @@ class Listener extends SingleChildRenderObjectWidget {
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///
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/// * [Listener], a similar widget that tracks pointer events when the pointer
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/// has buttons pressed.
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class MouseRegion extends StatefulWidget {
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class MouseRegion extends SingleChildRenderObjectWidget {
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/// Creates a widget that forwards mouse events to callbacks.
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///
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/// By default, all callbacks are empty, [cursor] is [MouseCursor.defer], and
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@ -6197,10 +6197,10 @@ class MouseRegion extends StatefulWidget {
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this.onHover,
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this.cursor = MouseCursor.defer,
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this.opaque = true,
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this.child,
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Widget? child,
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}) : assert(cursor != null),
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assert(opaque != null),
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super(key: key);
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super(key: key, child: child);
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/// Triggered when a mouse pointer has entered this widget.
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///
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@ -6347,13 +6347,26 @@ class MouseRegion extends StatefulWidget {
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/// This defaults to true.
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final bool opaque;
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/// The widget below this widget in the tree.
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///
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/// {@macro flutter.widgets.ProxyWidget.child}
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final Widget? child;
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@override
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RenderMouseRegion createRenderObject(BuildContext context) {
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return RenderMouseRegion(
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onEnter: onEnter,
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onHover: onHover,
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onExit: onExit,
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cursor: cursor,
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opaque: opaque,
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);
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}
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@override
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State<MouseRegion> createState() => _MouseRegionState();
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void updateRenderObject(BuildContext context, RenderMouseRegion renderObject) {
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renderObject
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..onEnter = onEnter
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..onHover = onHover
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..onExit = onExit
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..cursor = cursor
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..opaque = opaque;
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}
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@override
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void debugFillProperties(DiagnosticPropertiesBuilder properties) {
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@ -6371,51 +6384,6 @@ class MouseRegion extends StatefulWidget {
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}
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}
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class _MouseRegionState extends State<MouseRegion> {
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void handleExit(PointerExitEvent event) {
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if (widget.onExit != null && mounted)
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widget.onExit!(event);
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}
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PointerExitEventListener? getHandleExit() {
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return widget.onExit == null ? null : handleExit;
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}
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@override
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Widget build(BuildContext context) {
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return _RawMouseRegion(this);
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}
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}
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class _RawMouseRegion extends SingleChildRenderObjectWidget {
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_RawMouseRegion(this.owner) : super(child: owner.widget.child);
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final _MouseRegionState owner;
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@override
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RenderMouseRegion createRenderObject(BuildContext context) {
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final MouseRegion widget = owner.widget;
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return RenderMouseRegion(
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onEnter: widget.onEnter,
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onHover: widget.onHover,
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onExit: owner.getHandleExit(),
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cursor: widget.cursor,
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opaque: widget.opaque,
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);
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}
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@override
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void updateRenderObject(BuildContext context, RenderMouseRegion renderObject) {
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final MouseRegion widget = owner.widget;
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renderObject
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..onEnter = widget.onEnter
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..onHover = widget.onHover
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..onExit = owner.getHandleExit()
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..cursor = widget.cursor
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..opaque = widget.opaque;
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}
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}
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/// A widget that creates a separate display list for its child.
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///
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/// This widget creates a separate display list for its child, which
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