feat: add course bar length setting and clear blue glass Dock
This commit is contained in:
+159
-127
@@ -1,4 +1,5 @@
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import 'dart:ui';
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import 'dart:math' as math;
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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@@ -16,6 +17,7 @@ class GlassDock extends StatefulWidget {
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class _GlassDockState extends State<GlassDock> {
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static const _width = 192.0, _travel = 88.0;
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static const _blue = Color(0xFF007AFF);
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double? _drag;
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double get _position => _drag ?? widget.selectedIndex.toDouble();
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void _select(int index) {
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@@ -23,137 +25,83 @@ class _GlassDockState extends State<GlassDock> {
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widget.onSelected(index);
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}
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@override
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Widget build(BuildContext context) => Container(
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width: _width,
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height: 70,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(40),
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boxShadow: [
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BoxShadow(
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color: const Color(0xFF10212E).withValues(alpha: 0.22),
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blurRadius: 28,
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offset: const Offset(0, 10),
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),
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BoxShadow(
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color: Colors.white.withValues(alpha: 0.35),
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blurRadius: 1,
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spreadRadius: 1,
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),
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],
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),
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child: ClipRRect(
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borderRadius: BorderRadius.circular(40),
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child: BackdropFilter(
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filter: ImageFilter.blur(sigmaX: 24, sigmaY: 24),
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Widget _glass({required Widget child, bool lens = false}) => ClipRRect(
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borderRadius: BorderRadius.circular(lens ? 36 : 40),
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child: BackdropFilter(
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// Keep the underlying timetable visible. Optical rims provide the glass
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// thickness instead of a frosted, heavily tinted fill.
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filter: ui.ImageFilter.blur(
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sigmaX: lens ? 0.6 : 1.5,
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sigmaY: lens ? 0.6 : 1.5,
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),
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child: CustomPaint(
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foregroundPainter: _GlassRimPainter(lens: lens),
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child: DecoratedBox(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(40),
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gradient: LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [
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const Color(0xFFB9C0CA).withValues(alpha: 0.58),
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const Color(0xFF56616D).withValues(alpha: 0.34),
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const Color(0xFFA1ADB8).withValues(alpha: 0.42),
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],
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),
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border: Border.all(
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color: Colors.white.withValues(alpha: 0.55),
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width: 1.2,
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colors: lens
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? [
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Colors.white.withValues(alpha: 0.045),
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_blue.withValues(alpha: 0.018),
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Colors.white.withValues(alpha: 0.012),
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]
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: [
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Colors.white.withValues(alpha: 0.028),
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_blue.withValues(alpha: 0.005),
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Colors.white.withValues(alpha: 0.012),
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],
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),
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),
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child: Stack(
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children: [
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Positioned(
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left: 18,
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right: 18,
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top: 1,
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child: Container(
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height: 1.5,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(30),
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gradient: LinearGradient(
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colors: [
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Colors.white.withValues(alpha: 0),
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Colors.white.withValues(alpha: 0.8),
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Colors.white.withValues(alpha: 0.08),
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],
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),
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),
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),
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),
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AnimatedPositioned(
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duration: Duration(milliseconds: _drag == null ? 260 : 0),
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curve: Curves.easeOutCubic,
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left: 7 + _position * _travel,
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top: _drag == null ? 7 : 5,
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width: _drag == null ? 90 : 94,
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height: _drag == null ? 56 : 60,
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child: IgnorePointer(
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child: Container(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(36),
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gradient: LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [
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const Color(0xFF24323F).withValues(alpha: 0.64),
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const Color(0xFF101E2B).withValues(alpha: 0.8),
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const Color(0xFF475866).withValues(alpha: 0.5),
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],
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),
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border: Border.all(
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color: Colors.white.withValues(alpha: 0.3),
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width: 0.9,
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),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.18),
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blurRadius: 7,
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offset: const Offset(0, 3),
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),
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BoxShadow(
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color: Colors.white.withValues(alpha: 0.12),
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blurRadius: 3,
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spreadRadius: 0.5,
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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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Positioned(
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left: 8,
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right: 8,
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top: 7,
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bottom: 7,
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child: Row(
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children: [
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_item(0, Icons.calendar_month_rounded, '课表'),
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_item(1, Icons.person_rounded, '我的'),
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],
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),
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),
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Positioned(
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left: 16,
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right: 16,
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bottom: 1,
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child: Container(
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height: 1.3,
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decoration: BoxDecoration(
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gradient: LinearGradient(
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colors: [
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Colors.white.withValues(alpha: 0.05),
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Colors.white.withValues(alpha: 0.5),
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Colors.white.withValues(alpha: 0.05),
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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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child: child,
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),
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),
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),
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);
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@override
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Widget build(BuildContext context) => SizedBox(
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width: _width,
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height: 70,
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child: DecoratedBox(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(40),
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boxShadow: [
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BoxShadow(
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color: _blue.withValues(alpha: 0.035),
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blurRadius: 12,
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offset: const Offset(0, 5),
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),
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],
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),
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child: _glass(
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child: Stack(
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children: [
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AnimatedPositioned(
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duration: Duration(milliseconds: _drag == null ? 260 : 0),
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curve: Curves.easeOutCubic,
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left: 7 + _position * _travel,
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top: _drag == null ? 7 : 5,
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width: _drag == null ? 90 : 94,
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height: _drag == null ? 56 : 60,
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child: IgnorePointer(
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child: _glass(lens: true, child: const SizedBox.expand()),
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),
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),
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Positioned(
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left: 8,
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right: 8,
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top: 7,
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bottom: 7,
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child: Row(
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children: [
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_item(0, Icons.calendar_month_rounded, '课表'),
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_item(1, Icons.person_rounded, '我的'),
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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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@@ -169,7 +117,6 @@ class _GlassDockState extends State<GlassDock> {
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key: index == widget.selectedIndex ? const Key('dock-cursor') : null,
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behavior: HitTestBehavior.opaque,
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onTap: () => _select(index),
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// Only the selected lens can start a drag. The pages have no swipe handlers.
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onHorizontalDragStart: index == widget.selectedIndex
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? (_) => setState(() => _drag = widget.selectedIndex.toDouble())
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: null,
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@@ -192,11 +139,96 @@ class _GlassDockState extends State<GlassDock> {
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icon,
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size: 27,
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color: index == (_position >= 0.5 ? 1 : 0)
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? const Color(0xFF458BFF)
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: Colors.white.withValues(alpha: 0.85),
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? _blue
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: _blue.withValues(alpha: 0.48),
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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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/// Thin paired rims and directional glints suggest rounded optical thickness.
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/// All strong highlights stay on the edge; the centre remains clear.
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class _GlassRimPainter extends CustomPainter {
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const _GlassRimPainter({required this.lens});
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final bool lens;
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static const _blue = Color(0xFF007AFF);
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@override
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void paint(Canvas canvas, Size size) {
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final bounds = Offset.zero & size;
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final outer = RRect.fromRectAndRadius(
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bounds.deflate(0.7),
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Radius.circular(size.height / 2),
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);
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final inner = RRect.fromRectAndRadius(
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bounds.deflate(2.2),
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Radius.circular(size.height / 2 - 1.5),
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);
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canvas.drawRRect(
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outer,
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Paint()
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..style = PaintingStyle.stroke
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..strokeWidth = lens ? 1.25 : 1.1
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..shader = ui.Gradient.sweep(
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bounds.center,
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[
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Colors.white.withValues(alpha: 0.90),
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_blue.withValues(alpha: lens ? 0.30 : 0.15),
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Colors.white.withValues(alpha: 0.10),
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Colors.white.withValues(alpha: 0.86),
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_blue.withValues(alpha: 0.12),
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Colors.white.withValues(alpha: 0.90),
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],
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[0.0, 0.18, 0.38, 0.60, 0.80, 1.0],
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TileMode.clamp,
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-math.pi / 2,
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math.pi * 1.5,
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),
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);
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canvas.drawRRect(
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inner,
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Paint()
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..style = PaintingStyle.stroke
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..strokeWidth = 0.7
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..shader = ui.Gradient.linear(
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bounds.topLeft,
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bounds.bottomRight,
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[
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Colors.white.withValues(alpha: 0.30),
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_blue.withValues(alpha: lens ? 0.13 : 0.07),
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Colors.white.withValues(alpha: 0.40),
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],
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[0.0, 0.5, 1.0],
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),
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);
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final shine = Path()
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..moveTo(size.height * 0.32, 4)
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..quadraticBezierTo(
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size.width * 0.5,
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1.8,
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size.width - size.height * 0.35,
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4,
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);
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canvas.drawPath(
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shine,
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Paint()
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..style = PaintingStyle.stroke
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..strokeCap = StrokeCap.round
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..strokeWidth = 0.8
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..shader = ui.Gradient.linear(
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Offset.zero,
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Offset(size.width, 0),
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[
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Colors.white.withValues(alpha: 0),
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Colors.white.withValues(alpha: 0.65),
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Colors.white.withValues(alpha: 0),
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],
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[0.0, 0.5, 1.0],
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),
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);
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}
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@override
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bool shouldRepaint(_GlassRimPainter oldDelegate) => oldDelegate.lens != lens;
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}
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