refactor: implement SlideDrawer for enhanced chat page navigation
- Introduced SlideDrawer to replace the traditional drawer, providing a smoother and more interactive user experience. - Updated ChatPage to utilize SlideDrawer, allowing for customizable drawer behavior and improved responsiveness. - Refactored the app bar and navigation logic to accommodate the new slide drawer, enhancing overall layout and usability. - Removed deprecated imports and streamlined the code for better maintainability.
This commit is contained in:
cogwheel0
234
lib/shared/widgets/slide_drawer.dart
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234
lib/shared/widgets/slide_drawer.dart
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import 'package:flutter/material.dart';
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import 'dart:ui' as ui;
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import '../../shared/theme/theme_extensions.dart';
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class SlideDrawer extends StatefulWidget {
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final Widget child;
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final Widget drawer;
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final double maxFraction; // 0..1 of screen width
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final double edgeFraction; // 0..1 active edge width for open gesture
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final double settleFraction; // threshold to settle open on release
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final Duration duration;
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final Curve curve;
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final Color? scrimColor;
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// When true, opening the drawer pushes the content to the right
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// instead of overlaying above it.
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final bool pushContent;
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// Max scale reduction for pushed content at full open (e.g., 0.02 => 98%).
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final double contentScaleDelta;
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// Max blur sigma applied to pushed content at full open.
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final double contentBlurSigma;
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const SlideDrawer({
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super.key,
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required this.child,
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required this.drawer,
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this.maxFraction = 0.84,
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this.edgeFraction = 0.5,
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this.settleFraction = 0.12,
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this.duration = const Duration(milliseconds: 180),
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this.curve = Curves.fastOutSlowIn,
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this.scrimColor,
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this.pushContent = true,
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this.contentScaleDelta = 0.02,
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this.contentBlurSigma = 2.0,
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});
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static SlideDrawerState? of(BuildContext context) =>
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context.findAncestorStateOfType<SlideDrawerState>();
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@override
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State<SlideDrawer> createState() => SlideDrawerState();
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}
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class SlideDrawerState extends State<SlideDrawer>
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with SingleTickerProviderStateMixin {
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late final AnimationController _controller = AnimationController(
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vsync: this,
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duration: widget.duration,
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value: 0.0,
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);
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double get _panelWidth =>
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(MediaQuery.of(context).size.width * widget.maxFraction).clamp(
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280.0,
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520.0,
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);
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double get _edgeWidth =>
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MediaQuery.of(context).size.width * widget.edgeFraction;
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bool get isOpen => _controller.value == 1.0;
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Future<void> _animateTo(double target, {double velocity = 0.0}) async {
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final current = _controller.value;
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final distance = (current - target).abs().clamp(0.0, 1.0);
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// Smooth, distance-based duration so snaps don't feel abrupt.
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final baseMs = widget.duration.inMilliseconds;
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final normSpeed = (velocity.abs() / (_panelWidth + 0.001)).clamp(0.0, 4.0);
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// Higher velocity => shorter duration.
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final ms = (baseMs * distance / (1.0 + 1.5 * normSpeed))
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.clamp(90, baseMs)
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.round();
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final curve = target > current
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? (normSpeed > 0.5 ? Curves.linearToEaseOut : Curves.easeOutCubic)
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: (normSpeed > 0.5 ? Curves.easeInToLinear : Curves.easeInCubic);
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await _controller.animateTo(
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target,
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duration: Duration(milliseconds: ms),
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curve: curve,
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);
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}
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void open({double velocity = 0.0}) => _animateTo(1.0, velocity: velocity);
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void close({double velocity = 0.0}) => _animateTo(0.0, velocity: velocity);
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void toggle() => isOpen ? close() : open();
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double _startValue = 0.0;
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void _onDragStart(DragStartDetails d) {
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_startValue = _controller.value;
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}
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void _onDragUpdate(DragUpdateDetails d) {
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final delta = d.primaryDelta ?? 0.0;
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final next = (_startValue + delta / _panelWidth).clamp(0.0, 1.0);
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_controller.value = next;
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_startValue = next;
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}
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void _onDragEnd(DragEndDetails d) {
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final vx = d.primaryVelocity ?? 0.0;
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final vMag = vx.abs();
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// Fling assistance first.
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if (vMag > 300.0) {
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if (vx > 0) {
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open(velocity: vMag);
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} else {
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close(velocity: vMag);
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}
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return;
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}
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// Gentle settle threshold (less aggressive snap-back).
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if (_controller.value >= widget.settleFraction) {
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open(velocity: vMag);
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} else {
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close(velocity: vMag);
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}
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}
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@override
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Widget build(BuildContext context) {
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final theme = context.conduitTheme;
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final scrim = widget.scrimColor ?? context.colorTokens.overlayStrong;
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return Stack(
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children: [
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// Content (optionally pushed by the drawer)
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Positioned.fill(
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child: AnimatedBuilder(
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animation: _controller,
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builder: (context, _) {
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final t = _controller.value;
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final dx = (widget.pushContent ? _panelWidth * t : 0.0)
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.roundToDouble(); // snap to pixel to avoid jitter
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final scale =
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1.0 -
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(widget.pushContent
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? (widget.contentScaleDelta.clamp(0.0, 0.2) * t)
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: 0.0);
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final blurSigma =
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(widget.pushContent
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? (widget.contentBlurSigma.clamp(0.0, 8.0) * t)
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: 0.0)
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.toDouble();
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Widget content = widget.child;
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if (blurSigma > 0.0) {
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content = ImageFiltered(
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imageFilter: ui.ImageFilter.blur(
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sigmaX: blurSigma,
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sigmaY: blurSigma,
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),
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child: content,
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);
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}
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content = Transform.scale(
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scale: scale,
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alignment: Alignment.centerLeft,
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child: content,
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);
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content = Transform.translate(
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offset: Offset(dx, 0),
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child: content,
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);
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return content;
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},
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),
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),
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// Edge gesture region to open
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Positioned(
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left: 0,
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top: 0,
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bottom: 0,
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width: _edgeWidth,
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child: GestureDetector(
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behavior: HitTestBehavior.translucent,
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onHorizontalDragStart: _onDragStart,
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onHorizontalDragUpdate: _onDragUpdate,
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onHorizontalDragEnd: _onDragEnd,
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),
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),
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// Scrim + panel when animating or open
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AnimatedBuilder(
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animation: _controller,
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builder: (context, _) {
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final t = _controller.value;
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final ignoring = t == 0.0;
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return IgnorePointer(
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ignoring: ignoring,
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child: Stack(
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children: [
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// Scrim
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Positioned.fill(
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child: GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: close,
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onHorizontalDragStart: _onDragStart,
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onHorizontalDragUpdate: _onDragUpdate,
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onHorizontalDragEnd: _onDragEnd,
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child: ColoredBox(
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color: scrim.withValues(alpha: 0.6 * t),
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),
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),
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),
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// Panel (capture horizontal drags to close)
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Positioned(
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left: -_panelWidth * (1.0 - t),
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top: 0,
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bottom: 0,
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width: _panelWidth,
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child: GestureDetector(
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behavior: HitTestBehavior.translucent,
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onHorizontalDragStart: _onDragStart,
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onHorizontalDragUpdate: _onDragUpdate,
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onHorizontalDragEnd: _onDragEnd,
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child: RepaintBoundary(
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child: Material(
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color: theme.surfaceBackground,
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elevation: 8,
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child: widget.drawer,
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),
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),
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),
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),
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],
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),
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);
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},
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),
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],
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);
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}
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}
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