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Code Issues Releases Wiki Activity

added Type Jam puzzle app for review (#1554)

Browse Source 
* added Type Jam puzzle app for review

* pr round 2 prep

* updated ci scripts for varfont_shader_puzzle

* resolved unused and minor variable naming issues

* rotator tiles row and col are final vars now

* removed unused import and print from production

* made constructors const where needed

* pages_flow export refactored to directly come from that file

* removed old api commented out section from FragmentShaded

* updated pubspec yaml to correct project name

* dart min version updated; removed unnecessary commented out dependencies from pubspec.yaml

* updated pubspec.yaml min flutter version to ensure FragmentShader support

* added/edited comments for explanation, esp on var fonts; removed obsolete comments

* trailing newline added to pubspec.yaml eof
This commit is contained in:
Brian James
2023-01-12 19:40:47 -05:00
committed by GitHub
parent bea2ef6c66
commit 057728c5d2
164 changed files with 8214 additions and 0 deletions
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9
experimental/varfont_shader_puzzle/lib/components/components.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
export 'wonky_char.dart';
export 'wonky_anim_palette.dart';
export 'rotator_puzzle.dart';
export 'lightboxed_panel.dart';
export 'fragment_shaded.dart';

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experimental/varfont_shader_puzzle/lib/components/fragment_shaded.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
class FragmentShaded extends StatefulWidget {
final Widget child;
final String shaderName;
final int shaderDuration;
static const int dampenDuration = 1000;
static final Map<String, ui.FragmentProgram> fragmentPrograms = {};
static const List<String> fragmentProgramNames = [
'nothing',
'bw_split',
'color_split',
'row_offset',
'wavy_circ',
'wavy',
'wavy2'
];
const FragmentShaded({
required this.shaderName,
required this.shaderDuration,
required this.child,
super.key,
});
@override
State<FragmentShaded> createState() => FragmentShadedState();
}
class FragmentShadedState extends State<FragmentShaded>
with TickerProviderStateMixin {
late final AnimationController _controller;
late final Animation<double> _dampenAnimation;
late final Animation<double> _dampenCurve;
late final AnimationController _dampenController;
late AnimatingSamplerBuilder builder;
@override
void initState() {
super.initState();
_controller = AnimationController(
vsync: this,
duration: Duration(milliseconds: widget.shaderDuration),
)..repeat(reverse: false);
_dampenController = AnimationController(
vsync: this,
duration: const Duration(milliseconds: FragmentShaded.dampenDuration),
);
_dampenCurve = CurvedAnimation(
parent: _dampenController,
curve: Curves.easeInOut,
);
_dampenAnimation =
Tween<double>(begin: 1.0, end: 0.0).animate(_dampenCurve);
initializeFragmentProgramsAndBuilder();
}
void initializeFragmentProgramsAndBuilder() async {
if (FragmentShaded.fragmentPrograms.isEmpty) {
for (String s in FragmentShaded.fragmentProgramNames) {
FragmentShaded.fragmentPrograms[s] =
await ui.FragmentProgram.fromAsset('shaders/$s.frag');
}
}
builder = AnimatingSamplerBuilder(_controller, _dampenAnimation,
FragmentShaded.fragmentPrograms[widget.shaderName]!.fragmentShader());
setState(() {});
}
@override
void dispose() {
_controller.dispose();
_dampenController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
if (null == FragmentShaded.fragmentPrograms[widget.shaderName]) {
setState(() {});
return const SizedBox(
width: 0,
height: 0,
);
}
return Transform.scale(
scale: 0.5,
child: ShaderSamplerBuilder(
builder,
child: widget.child,
),
);
}
void startDampening() {
_dampenController.forward();
}
}
class AnimatingSamplerBuilder extends SamplerBuilder {
AnimatingSamplerBuilder(
this.animation, this.dampenAnimation, this.fragmentShader) {
animation.addListener(notifyListeners);
dampenAnimation.addListener(notifyListeners);
}
final Animation<double> animation;
final Animation<double> dampenAnimation;
final ui.FragmentShader fragmentShader;
@override
void paint(ui.Image image, Size size, ui.Canvas canvas) {
// animation
fragmentShader.setFloat(0, animation.value);
// width
fragmentShader.setFloat(1, size.width);
// height
fragmentShader.setFloat(2, size.height);
// dampener
fragmentShader.setFloat(3, dampenAnimation.value);
// sampler
fragmentShader.setImageSampler(0, image);
canvas.drawRect(Offset.zero & size, Paint()..shader = fragmentShader);
}
}
abstract class SamplerBuilder extends ChangeNotifier {
void paint(ui.Image image, Size size, ui.Canvas canvas);
}
class ShaderSamplerBuilder extends StatelessWidget {
const ShaderSamplerBuilder(this.builder, {required this.child, super.key});
final SamplerBuilder builder;
final Widget child;
@override
Widget build(BuildContext context) {
return RepaintBoundary(
child: _ShaderSamplerImpl(
builder,
child: child,
));
}
}
class _ShaderSamplerImpl extends SingleChildRenderObjectWidget {
const _ShaderSamplerImpl(this.builder, {super.child});
final SamplerBuilder builder;
@override
RenderObject createRenderObject(BuildContext context) {
return _RenderShaderSamplerBuilderWidget(
devicePixelRatio: MediaQuery.of(context).devicePixelRatio,
builder: builder,
);
}
@override
void updateRenderObject(
BuildContext context, covariant RenderObject renderObject) {
(renderObject as _RenderShaderSamplerBuilderWidget)
..devicePixelRatio = MediaQuery.of(context).devicePixelRatio
..builder = builder;
}
}
// A render object that conditionally converts its child into a [ui.Image]
// and then paints it in place of the child.
class _RenderShaderSamplerBuilderWidget extends RenderProxyBox {
// Create a new [_RenderSnapshotWidget].
_RenderShaderSamplerBuilderWidget({
required double devicePixelRatio,
required SamplerBuilder builder,
}) : _devicePixelRatio = devicePixelRatio,
_builder = builder;
/// The device pixel ratio used to create the child image.
double get devicePixelRatio => _devicePixelRatio;
double _devicePixelRatio;
set devicePixelRatio(double value) {
if (value == devicePixelRatio) {
return;
}
_devicePixelRatio = value;
if (_childRaster == null) {
return;
} else {
_childRaster?.dispose();
_childRaster = null;
markNeedsPaint();
}
}
/// The painter used to paint the child snapshot or child widgets.
SamplerBuilder get builder => _builder;
SamplerBuilder _builder;
set builder(SamplerBuilder value) {
if (value == builder) {
return;
}
builder.removeListener(markNeedsPaint);
_builder = value;
builder.addListener(markNeedsPaint);
markNeedsPaint();
}
ui.Image? _childRaster;
@override
void attach(PipelineOwner owner) {
builder.addListener(markNeedsPaint);
super.attach(owner);
}
@override
void detach() {
_childRaster?.dispose();
_childRaster = null;
builder.removeListener(markNeedsPaint);
super.detach();
}
@override
void dispose() {
builder.removeListener(markNeedsPaint);
_childRaster?.dispose();
_childRaster = null;
super.dispose();
}
// Paint [child] with this painting context, then convert to a raster and detach all
// children from this layer.
ui.Image? _paintAndDetachToImage() {
final OffsetLayer offsetLayer = OffsetLayer();
final PaintingContext context =
PaintingContext(offsetLayer, Offset.zero & size);
super.paint(context, Offset.zero);
// This ignore is here because this method is protected by the `PaintingContext`. Adding a new
// method that performs the work of `_paintAndDetachToImage` would avoid the need for this, but
// that would conflict with our goals of minimizing painting context.
// ignore: invalid_use_of_protected_member
context.stopRecordingIfNeeded();
final ui.Image image = offsetLayer.toImageSync(Offset.zero & size,
pixelRatio: devicePixelRatio);
offsetLayer.dispose();
return image;
}
@override
void paint(PaintingContext context, Offset offset) {
if (size.isEmpty) {
_childRaster?.dispose();
_childRaster = null;
return;
}
_childRaster?.dispose();
_childRaster = _paintAndDetachToImage();
builder.paint(_childRaster!, size, context.canvas);
}
}

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experimental/varfont_shader_puzzle/lib/components/lightboxed_panel.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import '../page_content/pages_flow.dart';
import '../styles.dart';
class LightboxedPanel extends StatefulWidget {
final PageConfig pageConfig;
final List<Widget> content;
final double width = 300;
final Function? onDismiss;
final bool fadeOnDismiss;
final int? autoDismissAfter;
final bool buildButton;
final Color lightBoxBgColor;
final Color cardBgColor;
const LightboxedPanel({
Key? key,
required this.pageConfig,
required this.content,
this.onDismiss,
this.fadeOnDismiss = true,
this.autoDismissAfter,
this.buildButton = true,
this.lightBoxBgColor = const Color.fromARGB(200, 255, 255, 255),
this.cardBgColor = Colors.white,
}) : super(key: key);
@override
State<LightboxedPanel> createState() => _LightboxedPanelState();
}
class _LightboxedPanelState extends State<LightboxedPanel> {
bool _fading = false;
bool _show = true;
late int _fadeOutDur = 200;
@override
void initState() {
_fadeOutDur = widget.fadeOnDismiss ? _fadeOutDur : 0;
if (null != widget.autoDismissAfter) {
_fadeOutDur = 0;
Future.delayed(
Duration(milliseconds: widget.autoDismissAfter!),
handleDismiss,
);
}
super.initState();
}
void handleDismiss() {
if (widget.fadeOnDismiss) {
setState(() {
_fading = true;
});
}
Future.delayed(Duration(milliseconds: _fadeOutDur), () {
setState(() {
if (widget.fadeOnDismiss) {
_show = false;
}
if (null != widget.onDismiss) {
widget.onDismiss!();
}
});
});
}
List<Widget> buttonComponents() {
return [
Column(
children: [
const SizedBox(
height: 8,
),
TextButton(
onPressed: handleDismiss,
style: ButtonStyles.style(),
child: Text(
'OK',
style: TextStyles.bodyStyle()
.copyWith(color: Colors.white, height: 1.2),
),
),
],
),
];
}
@override
Widget build(BuildContext context) {
if (_show) {
return AnimatedOpacity(
opacity: _fading ? 0 : 1,
curve: Curves.easeOut,
duration: Duration(milliseconds: _fadeOutDur),
child: DecoratedBox(
decoration: BoxDecoration(color: widget.lightBoxBgColor),
child: Center(
child: SizedBox(
width: widget.width,
child: DecoratedBox(
decoration: BoxDecoration(
color: widget.cardBgColor,
border: Border.all(
color: const Color.fromARGB(255, 200, 200, 200),
width: 1.0,
),
boxShadow: const [
BoxShadow(
color: Color.fromARGB(30, 0, 0, 0),
offset: Offset.zero,
blurRadius: 4.0,
spreadRadius: 2.0),
],
borderRadius: const BorderRadius.all(Radius.circular(10.0)),
),
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: widget.content +
(widget.buildButton ? buttonComponents() : []),
),
),
),
),
),
),
);
}
return const SizedBox(
width: 0,
height: 0,
);
}
}

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experimental/varfont_shader_puzzle/lib/components/rotator_puzzle.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:math';
import 'package:flutter/rendering.dart';
import 'components.dart';
import 'package:flutter/material.dart';
import 'dart:ui' as ui;
import '../model/puzzle_model.dart';
import '../page_content/pages_flow.dart';
class RotatorPuzzle extends StatefulWidget {
final PageConfig pageConfig;
final int numTiles;
final int puzzleNum;
final String shaderKey;
final int shaderDuration;
final String tileShadedString;
final double tileShadedStringSize;
final EdgeInsets tileShadedStringPadding;
final int tileShadedStringAnimDuration;
final List<WonkyAnimSetting> tileShadedStringAnimSettings;
final double tileScaleModifier;
const RotatorPuzzle({
Key? key,
required this.pageConfig,
required this.numTiles,
required this.puzzleNum,
required this.shaderKey,
required this.shaderDuration,
required this.tileShadedString,
required this.tileShadedStringSize,
required this.tileShadedStringPadding,
required this.tileShadedStringAnimDuration,
this.tileShadedStringAnimSettings = const [],
this.tileScaleModifier = 1.0,
}) : super(key: key);
@override
State<RotatorPuzzle> createState() => RotatorPuzzleState();
}
class RotatorPuzzleState extends State<RotatorPuzzle>
with TickerProviderStateMixin {
late PuzzleModel puzzleModel;
bool solved = false;
late final AnimationController animationController = AnimationController(
vsync: this,
duration: const Duration(milliseconds: 1000),
);
late final CurvedAnimation animationCurve = CurvedAnimation(
parent: animationController,
curve: const Interval(
0.2,
0.45,
curve: Curves.easeOut,
),
);
late Animation<double> opacAnimation =
Tween<double>(begin: 0.4, end: 1.0).animate(animationCurve)
..addListener(() {
setState(() {});
});
List<GlobalKey<RotatorPuzzleTileState>> tileKeys = [];
GlobalKey<FragmentShadedState> shadedWidgetStackHackStateKey = GlobalKey();
GlobalKey shadedWidgetRepaintBoundaryKey = GlobalKey();
GlobalKey<WonkyCharState> tileBgWonkyCharKey = GlobalKey();
ui.Image? shadedImg;
@override
void initState() {
for (int i = 0; i < widget.numTiles; i++) {
tileKeys.add(GlobalKey<RotatorPuzzleTileState>());
}
puzzleModel = PuzzleModel(
dim: widget.numTiles,
); //TODO check if correct; correlate dim and numTiles; probably get rid of numTiles
generateTiles();
shuffle();
super.initState();
}
List<RotatorPuzzleTile> generateTiles() {
// TODO move to build?
List<RotatorPuzzleTile> tiles = [];
int dim = sqrt(widget.numTiles).round();
for (int i = 0; i < widget.numTiles; i++) {
RotatorPuzzleTile tile = RotatorPuzzleTile(
key: tileKeys[i],
tileID: i,
row: (i / dim).floor(),
col: i % dim,
parentState: this,
shaderKey: widget.shaderKey,
shaderDuration: widget.shaderDuration,
tileShadedString: widget.tileShadedString,
tileShadedStringSize: widget.tileShadedStringSize,
tileShadedStringPadding: widget.tileShadedStringPadding,
animationSettings: widget.tileShadedStringAnimSettings,
tileShadedStringAnimDuration: widget.tileShadedStringAnimDuration,
tileScaleModifier: widget.tileScaleModifier,
);
tiles.add(tile);
}
return tiles;
}
void handlePointerDown({required int tileID}) {
puzzleModel.rotateTile(tileID);
if (puzzleModel.allRotationsCorrect()) {
handleSolved();
}
}
void handleSolved() {
animationController.addStatusListener((status) {
solved = true;
for (GlobalKey<RotatorPuzzleTileState> k in tileKeys) {
if (null != k.currentState && k.currentState!.mounted) {
startDampening();
tileBgWonkyCharKey.currentState!.stopAnimation();
}
}
if (status == AnimationStatus.completed) {
Future.delayed(
const Duration(milliseconds: FragmentShaded.dampenDuration + 250),
() {
widget.pageConfig.pageController.nextPage(
duration:
const Duration(milliseconds: PagesFlow.pageScrollDuration),
curve: Curves.easeOut,
);
});
}
});
animationController.forward();
}
void shuffle() {
Random rng = Random(0xC00010FF);
for (int i = 0; i < widget.numTiles; i++) {
int rando = rng.nextInt(3);
puzzleModel.setTileStatus(i, rando);
if (puzzleModel.allRotationsCorrect()) {
// fallback to prevent starting on solved puzzle
puzzleModel.setTileStatus(0, 1);
}
}
}
double tileSize() {
return widget.pageConfig.puzzleSize / sqrt(widget.numTiles);
}
List<double> tileCoords({required int row, required int col}) {
return <double>[col * tileSize(), row * tileSize()];
}
void setImageFromRepaintBoundary(GlobalKey which) {
final BuildContext? context = which.currentContext;
if (null != context) {
final RenderRepaintBoundary boundary =
context.findRenderObject()! as RenderRepaintBoundary;
final ui.Image img = boundary.toImageSync();
if (mounted) {
setState(() {
shadedImg = img;
});
}
}
}
void startDampening() {
if (null != shadedWidgetStackHackStateKey.currentState &&
shadedWidgetStackHackStateKey.currentState!.mounted) {
shadedWidgetStackHackStateKey.currentState!.startDampening();
}
}
@override
Widget build(BuildContext context) {
// TODO fix widget implementation to remove the need for this hack
// to force a setState rebuild
WidgetsBinding.instance.addPostFrameCallback((_) {
if (mounted) {
setState(() {});
}
});
// end hack ----------------
setImageFromRepaintBoundary(shadedWidgetRepaintBoundaryKey);
return Center(
child: SizedBox(
width: widget.pageConfig.puzzleSize,
height: widget.pageConfig.puzzleSize,
child: Opacity(
opacity: opacAnimation.value,
child: Stack(
children: <Widget>[
Positioned(
left: -9999,
top: -9999,
child: RepaintBoundary(
key: shadedWidgetRepaintBoundaryKey,
child: SizedBox(
width: widget.pageConfig.puzzleSize * 4,
height: widget.pageConfig.puzzleSize * 4,
child: Center(
child: FragmentShaded(
key: shadedWidgetStackHackStateKey,
shaderName: widget.shaderKey,
shaderDuration: widget.shaderDuration,
child: Padding(
padding: widget.tileShadedStringPadding,
child: WonkyChar(
key: tileBgWonkyCharKey,
text: widget.tileShadedString,
size: widget.tileShadedStringSize,
animDurationMillis:
widget.tileShadedStringAnimDuration,
animationSettings:
widget.tileShadedStringAnimSettings,
),
),
),
),
),
),
),
] +
generateTiles(),
),
),
),
);
}
}
////////////////////////////////////////////////////////
class RotatorPuzzleTile extends StatefulWidget {
final int tileID;
final RotatorPuzzleState parentState;
final String shaderKey;
final int shaderDuration;
final String tileShadedString;
final double tileShadedStringSize;
final EdgeInsets tileShadedStringPadding;
final int tileShadedStringAnimDuration;
final List<WonkyAnimSetting> animationSettings;
final double tileScaleModifier;
// TODO get row/col out into model
final int row;
final int col;
RotatorPuzzleTile({
Key? key,
required this.tileID,
required this.row,
required this.col,
required this.parentState,
required this.shaderKey,
required this.shaderDuration,
required this.tileShadedString,
required this.tileShadedStringSize,
required this.tileShadedStringPadding,
required this.animationSettings,
required this.tileShadedStringAnimDuration,
required this.tileScaleModifier,
}) : super(key: key);
final State<RotatorPuzzleTile> tileState = RotatorPuzzleTileState();
@override
State<RotatorPuzzleTile> createState() => RotatorPuzzleTileState();
}
class RotatorPuzzleTileState extends State<RotatorPuzzleTile>
with TickerProviderStateMixin {
double touchedOpac = 0.0;
Duration touchedOpacDur = const Duration(milliseconds: 50);
late final AnimationController animationController = AnimationController(
vsync: this,
duration: const Duration(
milliseconds: 100,
),
);
late final CurvedAnimation animationCurve = CurvedAnimation(
parent: animationController,
curve: Curves.easeOut,
);
late Animation<double> animation;
@override
void initState() {
super.initState();
animation = Tween<double>(
// initialize animation to starting point
begin: currentStatus() * pi * 0.5,
end: currentStatus() * pi * 0.5,
).animate(animationController);
}
@override
Widget build(BuildContext context) {
// TODO fix widget implementation to remove the need for this hack
// to force a setState rebuild
WidgetsBinding.instance.addPostFrameCallback((_) {
if (mounted) {
setState(() {});
}
});
// end hack ------------------------------
List<double> coords =
widget.parentState.tileCoords(row: widget.row, col: widget.col);
double zeroPoint = widget.parentState.widget.pageConfig.puzzleSize * .5 -
widget.parentState.tileSize() * 0.5;
return Stack(
children: [
Stack(
children: [
Positioned(
left: coords[0],
top: coords[1],
child: Transform(
transform: Matrix4.rotationZ(animation.value),
alignment: Alignment.center,
child: GestureDetector(
onTap: handlePointerDown,
child: ClipRect(
child: SizedBox(
width: widget.parentState.tileSize(),
height: widget.parentState.tileSize(),
child: OverflowBox(
maxHeight:
widget.parentState.widget.pageConfig.puzzleSize,
maxWidth:
widget.parentState.widget.pageConfig.puzzleSize,
child: Transform.translate(
offset: Offset(
zeroPoint -
widget.col * widget.parentState.tileSize(),
zeroPoint -
widget.row * widget.parentState.tileSize(),
),
child: SizedBox(
width:
widget.parentState.widget.pageConfig.puzzleSize,
height:
widget.parentState.widget.pageConfig.puzzleSize,
child: Transform.scale(
scale: widget.tileScaleModifier,
child: RawImage(
image: widget.parentState.shadedImg,
),
),
),
),
),
),
),
),
),
),
// puzzle tile overlay fades in/out on tap, to indicate touched tile
Positioned(
left: coords[0],
top: coords[1],
child: IgnorePointer(
child: AnimatedOpacity(
opacity: touchedOpac,
duration: touchedOpacDur,
onEnd: () {
if (touchedOpac == 1.0) {
touchedOpac = 0.0;
touchedOpacDur = const Duration(milliseconds: 300);
setState(() {});
}
},
child: DecoratedBox(
decoration: const BoxDecoration(
color: Color.fromARGB(120, 0, 0, 0)),
child: SizedBox(
width: widget.parentState.tileSize(),
height: widget.parentState.tileSize(),
),
),
),
),
),
],
),
],
);
}
void handlePointerDown() {
if (!widget.parentState.solved) {
int oldStatus = currentStatus();
widget.parentState.handlePointerDown(tileID: widget.tileID);
touchedOpac = 1.0;
touchedOpacDur = const Duration(milliseconds: 100);
rotateTile(oldStatus: oldStatus);
setState(() {});
}
}
int currentStatus() {
return widget.parentState.puzzleModel.getTileStatus(widget.tileID);
}
void rotateTile({required int oldStatus}) {
animation = Tween<double>(
begin: oldStatus * pi * 0.5,
end: currentStatus() * pi * 0.5,
).animate(animationController)
..addListener(() {
setState(() {});
});
animationController.reset();
animationController.forward();
}
}

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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:math';
import 'package:flutter/material.dart';
import '../components/components.dart';
// WonkyAnimPalette class is meant to be used with WonkyChar
// to create animations based on variable font settings (aka 'axes'),
// and a few basic settings like scale, rotation, etc.
// The choice of variable font axes to implement in this class and
// default min/max values for variable font axes are hard-coded
// for Amstelvar font, packaged and used in this project.
// Other variable fonts will have different available axes and min/max values.
//
// See articles on variable fonts at https://fonts.google.com/knowledge/topics/variable_fonts
// See a list of variable fonts in the Google Fonts lineup, along with
// an enumeration of variable font axes at https://fonts.google.com/variablefonts
class WonkyAnimPalette {
const WonkyAnimPalette({
Key? key,
});
static const Curve defaultCurve = Curves.easeInOut;
// basic (settings unrelated to variable font)
static WonkyAnimSetting scale({
double from = 1,
double to = 2,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'basic',
property: 'scale',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting offsetX({
double from = -50,
double to = 50,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'basic',
property: 'offsetX',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting offsetY({
double from = -50,
double to = 50,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'basic',
property: 'offsetY',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting rotation({
double from = -pi,
double to = pi,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'basic',
property: 'rotation',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting color({
Color from = Colors.blue,
Color to = Colors.red,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'basic',
property: 'color',
fromTo: RangeColor(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
// font variants (variable font settings)
static WonkyAnimSetting opticalSize({
double from = 8,
double to = 144,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'opsz',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting weight({
double from = 100,
double to = 1000,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'wght',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting grade({
double from = -300,
double to = 500,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'GRAD',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting slant({
double from = -10,
double to = 0,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'slnt',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting width({
double from = 50,
double to = 125,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'wdth',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting thickStroke({
double from = 18,
double to = 263,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'XOPQ',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting thinStroke({
double from = 15,
double to = 132,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YOPQ',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting counterWd({
double from = 324,
double to = 640,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'XTRA',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting upperCaseHt({
double from = 500,
double to = 1000,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YTUC',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting lowerCaseHt({
double from = 420,
double to = 570,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YTLC',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting ascenderHt({
double from = 500,
double to = 983,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YTAS',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting descenderDepth({
double from = -500,
double to = -138,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YTDE',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
static WonkyAnimSetting figureHt({
double from = 425,
double to = 1000,
double startAt = 0,
double endAt = 1,
Curve curve = defaultCurve,
}) {
return WonkyAnimSetting(
type: 'fv',
property: 'YTFI',
fromTo: RangeDbl(from: from, to: to),
startAt: startAt,
endAt: endAt,
curve: curve,
);
}
}

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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'dart:ui';
import 'package:flutter/foundation.dart' show kDebugMode;
class WonkyChar extends StatefulWidget {
final String text;
final double size;
final double baseRotation;
final int animDurationMillis;
final List<WonkyAnimSetting> animationSettings;
const WonkyChar({
Key? key,
required this.text,
required this.size,
this.baseRotation = 0,
this.animDurationMillis = 1000,
this.animationSettings = const <WonkyAnimSetting>[],
}) : super(key: key);
@override
State<WonkyChar> createState() => WonkyCharState();
}
class WonkyCharState extends State<WonkyChar>
with SingleTickerProviderStateMixin {
bool loopingAnimation = true;
late AnimationController _animController;
final List<Animation<double>> _curves = [];
late final List<Animation> _fvAnimations = [];
final List<String> _fvAxes = [];
// default curve and animations in case user sets nothing for them
late final defaultCurve = CurvedAnimation(
parent: _animController,
curve: const Interval(0, 1, curve: Curves.linear));
late Animation _scaleAnimation =
Tween<double>(begin: 1, end: 1).animate(defaultCurve);
late Animation _offsetXAnimation =
Tween<double>(begin: 0, end: 0).animate(defaultCurve);
late Animation _offsetYAnimation =
Tween<double>(begin: 0, end: 0).animate(defaultCurve);
late Animation _rotationAnimation =
Tween<double>(begin: 0, end: 0).animate(defaultCurve);
late Animation _colorAnimation =
ColorTween(begin: Colors.black, end: Colors.black).animate(defaultCurve);
@override
void initState() {
super.initState();
initAnimations(widget.animationSettings);
_animController
..addListener(() {
setState(() {});
})
..addStatusListener((status) {
if (status == AnimationStatus.completed && loopingAnimation) {
_animController.reverse();
} else if (status == AnimationStatus.dismissed && loopingAnimation) {
_animController.forward();
}
});
_animController.forward();
}
@override
void dispose() {
_animController.dispose();
super.dispose();
}
void stopAnimation() {
_animController.stop();
}
@override
Widget build(BuildContext context) {
List<FontVariation> fontVariations = [];
for (int i = 0; i < _fvAxes.length; i++) {
fontVariations.add(FontVariation(_fvAxes[i], _fvAnimations[i].value));
}
return Transform(
alignment: Alignment.center,
transform: Matrix4.translationValues(
_offsetXAnimation.value, _offsetYAnimation.value, 0)
..scale(_scaleAnimation.value)
..rotateZ(widget.baseRotation + _rotationAnimation.value),
child: IgnorePointer(
child: Text(
widget.text,
textAlign: TextAlign.center,
style: TextStyle(
color: _colorAnimation.value,
fontFamily: 'Amstelvar',
fontSize: widget.size,
fontVariations: fontVariations,
),
),
),
);
}
void initAnimations(List<WonkyAnimSetting> settings) {
_animController = AnimationController(
vsync: this,
duration: Duration(milliseconds: widget.animDurationMillis),
);
for (WonkyAnimSetting s in settings) {
final curve = CurvedAnimation(
parent: _animController,
curve: Interval(s.startAt, s.endAt, curve: s.curve),
);
late Animation animation;
if (s.property == 'color') {
animation =
ColorTween(begin: s.fromTo.fromValue(), end: s.fromTo.toValue())
.animate(curve);
} else {
animation =
Tween<double>(begin: s.fromTo.fromValue(), end: s.fromTo.toValue())
.animate(curve);
}
if (s.type == 'fv') {
_fvAxes.add(s.property);
_fvAnimations.add(animation);
} else if (s.type == 'basic') {
switch (s.property) {
case 'scale':
{
_scaleAnimation = animation;
}
break;
case 'rotation':
{
_rotationAnimation = animation;
}
break;
case 'offsetX':
{
_offsetXAnimation = animation;
}
break;
case 'offsetY':
{
_offsetYAnimation = animation;
}
break;
case 'color':
{
_colorAnimation = animation;
}
break;
default:
{
if (kDebugMode) {
print(
'**ERROR** unrecognized property to animate: ${s.property}');
}
}
break;
}
}
// save refs to all curves just to persist in mem, don't need to touch them again
_curves.add(curve);
}
}
}
abstract class WCRange {
WCRange();
fromValue() {}
toValue() {}
}
class RangeColor implements WCRange {
Color from;
Color to;
RangeColor({required this.from, required this.to});
@override
Color fromValue() {
return from;
}
@override
Color toValue() {
return to;
}
}
class RangeDbl implements WCRange {
double from;
double to;
RangeDbl({required this.from, required this.to});
@override
double fromValue() {
return from;
}
@override
double toValue() {
return to;
}
}
class WonkyAnimSetting {
// just the animation
String type; // 'fv' for fontVariation, 'basic' for everything else
String property; //font variation axis, or 'size'/'rotation'/etc.
WCRange fromTo;
double startAt; // 0 to 1 rel to controller
double endAt; // same as start
Curve curve;
WonkyAnimSetting({
required this.type,
required this.property,
required this.fromTo,
required this.startAt,
required this.endAt,
required this.curve,
});
}

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experimental/varfont_shader_puzzle/lib/main.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import '../page_content/pages_flow.dart';
void main() {
runApp(const TypePuzzle());
}
class TypePuzzle extends StatelessWidget {
const TypePuzzle({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Type Jam',
theme: ThemeData(
primarySwatch: Colors.grey,
),
home: const Scaffold(
appBar: null,
body: PagesFlow(),
),
);
}
}

50
experimental/varfont_shader_puzzle/lib/model/puzzle_model.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
class PuzzleModel {
final int dim; // num tiles in any one dir; dim x dim board
// 2d array like a board
// x is the tileID and its position in the array mirrors the board
List<List<int>> positions = [<int>[]];
// rotation states, where index == tileID
// x is num of CCW rotations off from correct (x % 4 == 0 indicates correct)
List<int> status = [];
PuzzleModel({required this.dim}) {
for (int i = 0; i < dim; i++) {
if (positions[positions.length - 1].length == dim) {
positions.add(<int>[]);
}
positions[positions.length - 1].add(i);
status.add(0);
}
}
bool allRotationsCorrect() {
for (int i = 0; i < status.length; i++) {
if (status[i] % 4 != 0) {
return false;
}
}
return true;
}
void setTileStatus(int tileID, int newStatus) {
status[tileID] = newStatus;
}
int getTileStatus(int tileID) {
return status[tileID];
}
void rotateTile(int tileID) {
status[tileID]--;
}
int getRotationOfTile(int tileID) {
return status[tileID];
}
}

222
experimental/varfont_shader_puzzle/lib/page_content/page_ascender_descender.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import '../components/components.dart';
import '../page_content/pages_flow.dart';
import 'package:flutter/material.dart';
import 'dart:math';
import '../styles.dart';
class PageAscenderDescender extends SinglePage {
const PageAscenderDescender({
Key? key,
required super.pageConfig,
}) : super(
key: key,
);
@override
State<SinglePage> createState() => _PageAscenderDescenderState();
}
class _PageAscenderDescenderState extends SinglePageState {
@override
Widget createTopicIntro() {
return LightboxedPanel(
pageConfig: widget.pageConfig,
content: [
Text(
'Ascenders & Descenders'.toUpperCase(),
style: TextStyles.headlineStyle(),
textAlign: TextAlign.left,
),
Text(
'Fonts can also vary based on their '
'individual pieces, like the ascenders (the parts that '
'extend upward) and the descenders (which extend downward)! '
'Piece this letter together and lock in its '
'wobbly ascenders and descenders!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
],
);
}
@override
List<Widget> buildWonkyChars() {
return <Widget>[
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * 0.08,
top: widget.pageConfig.wonkyCharLargeSize * -0.1,
child: WonkyChar(
text: 'l',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.ascenderHt(
from: 500,
to: 983,
curve: Curves.easeInOut,
),
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
curve: Curves.easeInOut,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.34,
top: widget.pageConfig.wonkyCharLargeSize * 0.12,
child: WonkyChar(
text: 'g',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.12 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
curve: Curves.easeInOut,
),
WonkyAnimPalette.descenderDepth(
from: -500,
to: -138,
)
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * -0.1,
top: widget.pageConfig.wonkyCharLargeSize * -0.5,
child: WonkyChar(
text: 'q',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 5000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.descenderDepth(
from: -240,
to: -440,
startAt: 0.3,
endAt: 0.7,
curve: Curves.bounceOut,
),
],
),
),
// lower half --------------------------------------
Positioned(
left: widget.pageConfig.wonkyCharSmallSize * 0.1,
bottom: widget.pageConfig.wonkyCharSmallSize * -0.34,
child: WonkyChar(
text: 'f',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animDurationMillis: 12000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.ascenderHt(
from: 600,
to: 980,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.17,
bottom: widget.pageConfig.wonkyCharLargeSize * 0.5,
child: WonkyChar(
text: 'p',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animDurationMillis: 3000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.descenderDepth(
from: -390,
to: -220,
curve: Curves.linear,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.4,
bottom: widget.pageConfig.wonkyCharSmallSize * 0.25,
child: WonkyChar(
text: 'k',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animDurationMillis: 3000,
animationSettings: [
WonkyAnimPalette.ascenderHt(
from: 600,
to: 840,
curve: Curves.linear,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * 0.05,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.04,
child: WonkyChar(
text: 'j',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.2 * pi,
animDurationMillis: 5000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.descenderDepth(
from: -200,
to: -500,
)
],
),
),
];
}
@override
Widget createPuzzle() {
return RotatorPuzzle(
pageConfig: widget.pageConfig,
numTiles: 9,
puzzleNum: 3,
shaderKey: 'row_offset',
shaderDuration: 2000,
tileShadedString: 'fyd',
tileShadedStringPadding: EdgeInsets.only(
top: 0.233 * widget.pageConfig.puzzleSize,
bottom: 0,
left: 0.465 * widget.pageConfig.puzzleSize,
right: 0.465 * widget.pageConfig.puzzleSize),
tileShadedStringSize: 1.86 * widget.pageConfig.puzzleSize,
tileScaleModifier: 2.7,
tileShadedStringAnimDuration: 2000,
tileShadedStringAnimSettings: [
WonkyAnimPalette.weight(from: 200, to: 200),
WonkyAnimPalette.width(from: 50, to: 50),
WonkyAnimPalette.ascenderHt(from: 700, to: 980),
WonkyAnimPalette.descenderDepth(from: -238, to: -138),
],
);
}
}

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experimental/varfont_shader_puzzle/lib/page_content/page_narrative_post.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import '../components/components.dart';
import '../page_content/pages_flow.dart';
import '../styles.dart';
class PageNarrativePost extends NarrativePage {
const PageNarrativePost({
Key? key,
required super.pageConfig,
}) : super(key: key);
@override
State<NarrativePage> createState() => _PageNarrativePostState();
}
class _PageNarrativePostState extends NarrativePageState {
@override
void initState() {
panels = [
LightboxedPanel(
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
buildButton: true,
onDismiss: super.handleIntroDismiss,
content: [
Text(
'Whew, we put everything back together just before the font launch.',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
const SizedBox(
height: 8,
),
const Image(
image: AssetImage('assets/images/specimen-1.png'),
),
Text(
'As a reward, please enjoy the FontCo wallpapers on the next screen. Congratulations!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
],
),
];
super.initState();
}
@override
Widget build(BuildContext context) {
return panels[panelIndex];
}
}

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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import '../components/components.dart';
import '../page_content/pages_flow.dart';
import '../styles.dart';
class PageNarrativePre extends NarrativePage {
const PageNarrativePre({
Key? key,
required super.pageConfig,
}) : super(key: key);
@override
State<NarrativePage> createState() => _PageNarrativePreState();
}
class _PageNarrativePreState extends NarrativePageState {
@override
void initState() {
panels = [
LightboxedPanel(
key: UniqueKey(),
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
onDismiss: super.handleIntroDismiss,
content: [
Text(
'Welcome to your first day on the FontCo team! Are you ready to help us publish our newest font, Designer Pro?',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
const SizedBox(
height: 8,
),
const Image(
image: AssetImage('assets/images/specimen-1.png'),
),
],
),
LightboxedPanel(
key: UniqueKey(),
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
onDismiss: super.handleIntroDismiss,
autoDismissAfter: 100,
buildButton: false,
lightBoxBgColor: Colors.black,
cardBgColor: Colors.black,
content: [
Transform.scale(
scaleX: -1,
child: Text(
'Welcome to your first day on the FontCo team! Are you ready to help us publish our newest font, Designer Pro?',
style: TextStyles.bodyStyle().copyWith(color: Colors.white),
textAlign: TextAlign.left,
),
),
const SizedBox(
height: 8,
),
Transform.scale(
scaleX: -1,
child: const Image(
image: AssetImage('assets/images/specimen-1-glitch.png'),
),
),
const SizedBox(
height: 56,
),
],
),
LightboxedPanel(
key: UniqueKey(),
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
onDismiss: super.handleIntroDismiss,
autoDismissAfter: 100,
buildButton: false,
lightBoxBgColor: Colors.black,
cardBgColor: Colors.black,
content: [
Transform.scale(
scaleX: -1,
child: Transform.translate(
offset: const Offset(20.0, 0.0),
child: Text(
'Welcome to your first day on the FontCo team! Are you ready to help us publish our newest font, Designer Pro?',
style: TextStyles.bodyStyle().copyWith(color: Colors.white),
textAlign: TextAlign.left,
),
),
),
const SizedBox(
height: 8,
),
Transform.scale(
scaleX: -1,
child: Transform.translate(
offset: const Offset(-20.0, 0.0),
child: const Image(
image: AssetImage('assets/images/specimen-1-glitch.png'),
),
),
),
const SizedBox(
height: 56,
),
],
),
LightboxedPanel(
key: UniqueKey(),
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
onDismiss: super.handleIntroDismiss,
autoDismissAfter: 100,
buildButton: false,
lightBoxBgColor: Colors.black,
cardBgColor: Colors.black,
content: [
Transform.scale(
scaleX: -1,
child: Text(
'Welcome to your first day on the FontCo team! Are you ready to help us publish our newest font, Designer Pro?',
style: TextStyles.bodyStyle().copyWith(color: Colors.white),
textAlign: TextAlign.left,
),
),
const SizedBox(
height: 8,
),
Transform.scale(
scaleX: -1,
child: const Image(
image: AssetImage('assets/images/specimen-1-glitch.png'),
),
),
const SizedBox(
height: 56,
),
],
),
LightboxedPanel(
key: UniqueKey(),
pageConfig: widget.pageConfig,
fadeOnDismiss: false,
onDismiss: super.handleIntroDismiss,
content: [
Text(
'Oh no, you clicked the button too hard! Now the font file is glitched. Help us put the letters back together so we can launch!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
const SizedBox(
height: 8,
),
const Image(
image: AssetImage('assets/images/specimen-2.png'),
),
],
),
];
super.initState();
}
@override
Widget build(BuildContext context) {
return panels[panelIndex];
}
}

194
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import '../components/components.dart';
import 'package:flutter/material.dart';
import '../page_content/pages_flow.dart';
import 'dart:math';
import '../styles.dart';
class PageOpticalSize extends SinglePage {
const PageOpticalSize({
Key? key,
required super.pageConfig,
}) : super(key: key);
@override
State<SinglePage> createState() => _PageOpticalSizeState();
}
class _PageOpticalSizeState extends SinglePageState {
@override
Widget createTopicIntro() {
return LightboxedPanel(
pageConfig: widget.pageConfig,
content: [
Text(
'Optical Size'.toUpperCase(),
style: TextStyles.headlineStyle(),
textAlign: TextAlign.left,
),
Text(
'Optical size adjusts the type according to how large it will be shown. '
'Smaller type usually calls for less contrast between the thin and thick '
'parts the letter, while larger type calls for more contrast. '
'Put this glitching letter back together and lock in the optical size!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
],
);
}
@override
List<Widget> buildWonkyChars() {
return <Widget>[
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * -0.13,
top: widget.pageConfig.wonkyCharLargeSize * -0.3,
child: WonkyChar(
text: 'O',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
curve: Curves.easeInOut,
),
WonkyAnimPalette.opticalSize(
from: 70,
to: 144,
)
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.37,
top: widget.pageConfig.wonkyCharLargeSize * 0.37,
child: WonkyChar(
text: '@',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.12 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
curve: Curves.easeInOut,
),
WonkyAnimPalette.opticalSize(
from: 78,
to: 8,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.57,
top: widget.pageConfig.wonkyCharSmallSize * -0.02,
child: WonkyChar(
text: 'r',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animationSettings: [
WonkyAnimPalette.opticalSize(
from: 32,
to: 106,
)
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * 0.03,
top: widget.pageConfig.wonkyCharLargeSize * -0.26,
child: WonkyChar(
text: 'e',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.15 * pi,
animDurationMillis: 5000,
animationSettings: [
WonkyAnimPalette.opticalSize(
from: 70,
to: 144,
)
],
),
),
// lower half --------------------------------------
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * 0.1,
bottom: widget.pageConfig.wonkyCharLargeSize * 0.05,
child: WonkyChar(
text: 'i',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.04 * pi,
animationSettings: [
WonkyAnimPalette.opticalSize(
from: 40,
to: 8,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.37,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.04,
child: WonkyChar(
text: 'Z',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animationSettings: [
WonkyAnimPalette.opticalSize(
from: 8,
to: 60,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * -0.14,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.1,
child: WonkyChar(
text: 'A',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 12000,
animationSettings: [
WonkyAnimPalette.opticalSize(
from: 80,
to: 20,
),
WonkyAnimPalette.rotation(
from: -0.01 * pi,
to: 0.01 * pi,
),
],
),
),
];
}
@override
Widget createPuzzle() {
return RotatorPuzzle(
pageConfig: widget.pageConfig,
numTiles: 16,
puzzleNum: 4,
shaderKey: 'wavy',
shaderDuration: 5000,
tileShadedString: 'Z',
tileShadedStringPadding:
EdgeInsets.only(bottom: 0.349 * widget.pageConfig.puzzleSize),
tileScaleModifier: 2.6,
tileShadedStringSize: 2.79 * widget.pageConfig.puzzleSize,
tileShadedStringAnimDuration: 3000,
tileShadedStringAnimSettings: [
WonkyAnimPalette.weight(from: 1000, to: 1000),
WonkyAnimPalette.width(from: 125, to: 125),
WonkyAnimPalette.opticalSize(from: 8, to: 144)
],
);
}
}

184
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import '../components/components.dart';
import 'package:flutter/material.dart';
import 'dart:math';
import '../page_content/pages_flow.dart';
import '../styles.dart';
class PageWeight extends SinglePage {
const PageWeight({
Key? key,
required super.pageConfig,
}) : super(key: key);
@override
State<SinglePage> createState() => _PageWeightState();
}
class _PageWeightState extends SinglePageState {
@override
Widget createTopicIntro() {
return LightboxedPanel(
pageConfig: widget.pageConfig,
content: [
Text(
'Weight'.toUpperCase(),
style: TextStyles.headlineStyle(),
textAlign: TextAlign.left,
),
Text(
'You probably knew that fonts can vary by weight, or the boldness, '
'as we can see in the letters on this page. Tap the pieces of the '
'broken letter to bring it back together, but don’t get distracted '
'by its oscillating weight!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
],
);
}
@override
List<Widget> buildWonkyChars() {
return <Widget>[
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * -0.01,
top: widget.pageConfig.wonkyCharLargeSize * -0.26,
child: WonkyChar(
text: 'S',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: 100,
to: 300,
curve: Curves.easeInOut,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.34,
top: widget.pageConfig.wonkyCharLargeSize * 0.3,
child: WonkyChar(
text: 't',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.12 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: 1000,
to: 800,
curve: Curves.easeInOut,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * 0.07,
top: widget.pageConfig.wonkyCharLargeSize * -0.26,
child: WonkyChar(
text: 'q',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.15 * pi,
animDurationMillis: 5000,
animationSettings: [
WonkyAnimPalette.weight(
from: 200,
to: 500,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.5,
top: widget.pageConfig.wonkyCharSmallSize * 0.3,
child: WonkyChar(
text: '*',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animationSettings: [
WonkyAnimPalette.weight(
from: 100,
to: 400,
),
],
),
),
// lower half --------------------------------------
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * -0.2,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.34,
child: WonkyChar(
text: 'C',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.15 * pi,
animDurationMillis: 7000,
animationSettings: [
WonkyAnimPalette.weight(
from: 1000,
to: 700,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.42,
bottom: widget.pageConfig.wonkyCharLargeSize * 0.02,
child: WonkyChar(
text: 'f',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animDurationMillis: 4000,
animationSettings: [
WonkyAnimPalette.weight(
from: 100,
to: 200,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * -0.2,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.23,
child: WonkyChar(
text: 'R',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -1.15 * pi,
animDurationMillis: 2000,
animationSettings: [
WonkyAnimPalette.weight(
from: 700,
to: 900,
),
],
),
),
];
}
@override
Widget createPuzzle() {
return RotatorPuzzle(
pageConfig: widget.pageConfig,
numTiles: 9,
puzzleNum: 1,
shaderKey: 'wavy2',
shaderDuration: 3000,
tileShadedString: 'W',
tileShadedStringPadding: EdgeInsets.only(
left: 0.698 * widget.pageConfig.puzzleSize,
right: 0.698 * widget.pageConfig.puzzleSize),
tileShadedStringSize: 2.79 * widget.pageConfig.puzzleSize,
tileScaleModifier: 2.4,
tileShadedStringAnimDuration: 1000,
tileShadedStringAnimSettings: [
WonkyAnimPalette.weight(from: 600, to: 1000),
WonkyAnimPalette.width(from: 50, to: 50),
],
);
}
}

221
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import '../components/components.dart';
import 'package:flutter/material.dart';
import 'dart:math';
import '../page_content/pages_flow.dart';
import '../styles.dart';
class PageWidth extends SinglePage {
const PageWidth({
Key? key,
required super.pageConfig,
}) : super(
key: key,
);
@override
State<SinglePage> createState() => _PageWidthState();
}
class _PageWidthState extends SinglePageState {
@override
Widget createTopicIntro() {
return LightboxedPanel(
pageConfig: widget.pageConfig,
content: [
Text(
'Width'.toUpperCase(),
style: TextStyles.headlineStyle(),
textAlign: TextAlign.left,
),
Text(
'Fonts can vary by width as well. Choosing a new width setting is better '
'than stretching letters in an image editor, which would just distort the letter. '
'Solve this letter puzzle to clear the glitch and set the width!',
style: TextStyles.bodyStyle(),
textAlign: TextAlign.left,
),
],
);
}
@override
List<Widget> buildWonkyChars() {
return <Widget>[
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * -0.17,
top: widget.pageConfig.wonkyCharLargeSize * -0.2,
child: WonkyChar(
text: 'r',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.15 * pi,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.width(
from: 120,
to: 125,
)
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.3,
top: widget.pageConfig.wonkyCharLargeSize * 0.42,
child: WonkyChar(
text: 'x',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.12 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
curve: Curves.easeInOut,
),
WonkyAnimPalette.width(
from: 70,
to: 50,
),
WonkyAnimPalette.offsetY(
from: -6,
to: 2,
curve: Curves.easeInOut,
),
WonkyAnimPalette.rotation(
from: -0.04 * pi,
to: 0.005 * pi,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * 0,
top: widget.pageConfig.wonkyCharLargeSize * -0.2,
child: WonkyChar(
text: 'F',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: 0.15 * pi,
animDurationMillis: 3200,
animationSettings: [
WonkyAnimPalette.width(
from: 120,
to: 125,
),
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
],
),
),
// lower half --------------------------------------
Positioned(
left: widget.pageConfig.wonkyCharLargeSize * -0.2,
bottom: widget.pageConfig.wonkyCharLargeSize * -0.3,
child: WonkyChar(
text: 'W',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -0.15 * pi,
animDurationMillis: 6000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.width(
from: 75,
to: 50,
),
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.4,
bottom: widget.pageConfig.wonkyCharLargeSize * 0.1,
child: WonkyChar(
text: 'h',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.width(
from: 90,
to: 115,
)
],
),
),
Positioned(
left: widget.pageConfig.screenWidth * 0.75,
bottom: widget.pageConfig.wonkyCharSmallSize * -0.24,
child: WonkyChar(
text: 'K',
size: widget.pageConfig.wonkyCharSmallSize,
baseRotation: -0.15 * pi,
animDurationMillis: 5000,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.width(
from: 125,
to: 90,
startAt: 0.3,
endAt: 0.7,
),
],
),
),
Positioned(
right: widget.pageConfig.wonkyCharLargeSize * 0.0,
bottom: widget.pageConfig.wonkyCharLargeSize * 0.1,
child: WonkyChar(
text: '?',
size: widget.pageConfig.wonkyCharLargeSize,
baseRotation: -1.67 * pi,
animationSettings: [
WonkyAnimPalette.weight(
from: PageConfig.baseWeight,
to: PageConfig.baseWeight,
),
WonkyAnimPalette.width(
from: 110,
to: 60,
)
],
),
),
];
}
@override
Widget createPuzzle() {
return RotatorPuzzle(
pageConfig: widget.pageConfig,
numTiles: 16,
puzzleNum: 2,
shaderKey: 'bw_split',
shaderDuration: 2000,
tileShadedString: 'S',
tileShadedStringPadding: EdgeInsets.only(
left: 0.349 * widget.pageConfig.puzzleSize,
right: 0.349 * widget.pageConfig.puzzleSize),
tileShadedStringSize: 3.256 * widget.pageConfig.puzzleSize,
tileScaleModifier: 2.34,
tileShadedStringAnimDuration: 2000,
tileShadedStringAnimSettings: [
WonkyAnimPalette.weight(from: 200, to: 200),
WonkyAnimPalette.width(from: 50, to: 125),
],
);
}
}

9
experimental/varfont_shader_puzzle/lib/page_content/pages.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
export 'page_weight.dart';
export 'page_width.dart';
export 'page_ascender_descender.dart';
export 'page_optical_size.dart';
export 'page_narrative_pre.dart';
export 'page_narrative_post.dart';

174
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:math';
import 'package:flutter/material.dart';
import '../page_content/wallpapers_flow.dart';
import '../components/components.dart';
import 'pages.dart';
class PagesFlow extends StatefulWidget {
const PagesFlow({Key? key}) : super(key: key);
static const pageScrollDuration = 400;
@override
State<PagesFlow> createState() => _PagesFlowState();
}
class _PagesFlowState extends State<PagesFlow> {
late PageController pageController = PageController();
@override
Widget build(BuildContext context) {
final double screenWidth = MediaQuery.of(context).size.width;
final double screenHeight = MediaQuery.of(context).size.height;
bool narrowView = screenWidth * 1.8 < screenHeight ? true : false;
double puzzleSize =
narrowView ? screenWidth * 1 : min(screenHeight * 0.6, screenWidth);
double topBottomMargin = (screenHeight - puzzleSize) * 0.5;
double wonkyCharLargeSize = topBottomMargin * 1.0;
double wonkyCharSmallSize = wonkyCharLargeSize * 0.5;
PageConfig pageConfig = PageConfig(
screenWidth: screenWidth,
screenHeight: screenHeight,
narrowView: narrowView,
puzzleSize: puzzleSize,
pageController: pageController,
wonkyCharLargeSize: wonkyCharLargeSize,
wonkyCharSmallSize: wonkyCharSmallSize,
);
return PageView(
controller: pageController,
physics: const NeverScrollableScrollPhysics(),
scrollDirection: Axis.vertical,
children: [
PageNarrativePre(
pageConfig: pageConfig,
),
PageWeight(
pageConfig: pageConfig,
),
PageAscenderDescender(
pageConfig: pageConfig,
),
PageOpticalSize(
pageConfig: pageConfig,
),
PageWidth(
pageConfig: pageConfig,
),
PageNarrativePost(
pageConfig: pageConfig,
),
const WallpapersFlow(),
],
);
}
}
class PageConfig {
final double screenWidth;
final double screenHeight;
final bool narrowView;
final double puzzleSize;
final PageController pageController;
final double wonkyCharLargeSize;
final double wonkyCharSmallSize;
static double baseWeight = 800;
const PageConfig({
Key? key,
required this.screenWidth,
required this.screenHeight,
required this.narrowView,
required this.puzzleSize,
required this.pageController,
required this.wonkyCharLargeSize,
required this.wonkyCharSmallSize,
});
}
class SinglePage extends StatefulWidget {
final PageConfig pageConfig;
const SinglePage({
Key? key,
required this.pageConfig,
}) : super(key: key);
@override
State<SinglePage> createState() => SinglePageState();
}
class SinglePageState extends State<SinglePage> with TickerProviderStateMixin {
List<Widget> buildWonkyChars() {
return <Widget>[];
}
Widget createPuzzle() {
return Container();
}
Widget createTopicIntro() {
return LightboxedPanel(
pageConfig: widget.pageConfig,
content: const [],
);
}
@override
Widget build(BuildContext context) {
List<Widget> c = [];
c.add(createPuzzle());
c += buildWonkyChars();
c.add(createTopicIntro());
return Stack(
children: c,
);
}
void puzzleDone() {}
}
class NarrativePage extends StatefulWidget {
final PageConfig pageConfig;
const NarrativePage({
Key? key,
required this.pageConfig,
}) : super(key: key);
@override
State<NarrativePage> createState() => NarrativePageState();
}
class NarrativePageState extends State<NarrativePage>
with TickerProviderStateMixin {
int panelIndex = 0;
List<LightboxedPanel> panels = [];
void handleIntroDismiss() {
Future.delayed(const Duration(milliseconds: 50), () {
setState(() {
if (panelIndex == panels.length - 1) {
widget.pageConfig.pageController.nextPage(
duration:
const Duration(milliseconds: PagesFlow.pageScrollDuration),
curve: Curves.easeOut,
);
} else {
panelIndex++;
}
});
});
}
@override
Widget build(BuildContext context) {
switch (panelIndex) {
default:
return Container();
}
}
void puzzleDone() {}
}

430
experimental/varfont_shader_puzzle/lib/page_content/wallpapers_flow.dart Normal file
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// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
class WallpapersFlow extends StatefulWidget {
const WallpapersFlow({super.key});
@override
State<WallpapersFlow> createState() => _WallpapersFlowState();
}
class _WallpapersFlowState extends State<WallpapersFlow> {
int pageNum = 0;
int numPages = 4;
@override
void initState() {
LicenseRegistry.addLicense(() => Stream<LicenseEntry>.value(
LicenseEntryWithLineBreaks(
<String>['roboto_font'],
robotoLicense,
),
));
LicenseRegistry.addLicense(() => Stream<LicenseEntry>.value(
LicenseEntryWithLineBreaks(
<String>['amstelvar_font'],
amstelvarLicense,
),
));
super.initState();
}
@override
Widget build(BuildContext context) {
return Stack(
children: [
PageView(
onPageChanged: (value) {
setState(() {
pageNum = value;
});
},
children: const [
DecoratedBox(
decoration: BoxDecoration(
color: Colors.black,
),
child: Center(
child: Image(
image: AssetImage('assets/images/wallpaper3.png'),
fit: BoxFit.contain,
),
),
),
DecoratedBox(
decoration: BoxDecoration(
color: Colors.black,
),
child: Center(
child: Image(
image: AssetImage('assets/images/wallpaper1.png'),
fit: BoxFit.contain,
),
),
),
DecoratedBox(
decoration: BoxDecoration(
color: Colors.black,
),
child: Center(
child: Image(
image: AssetImage('assets/images/wallpaper2.png'),
fit: BoxFit.contain,
),
),
),
LicensePage(),
],
),
Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.only(bottom: 20.0),
child: Container(
width: 100,
height: 30,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(15),
color: const Color.fromARGB(220, 0, 0, 0),
),
child: Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: _buildScrollDots(),
),
),
),
),
),
],
);
}
List<Widget> _buildScrollDots() {
List<Widget> dots = [];
for (int i = 0; i < numPages; i++) {
Color dotColor = i == pageNum
? const Color.fromARGB(255, 255, 255, 255)
: const Color.fromARGB(255, 105, 105, 105);
Widget d = Container(
width: 16,
height: 16,
decoration: BoxDecoration(
color: dotColor,
borderRadius: BorderRadius.circular(8.0),
border: Border.all(color: Colors.white, width: 0.5),
),
);
dots.add(d);
}
return dots;
}
final String robotoLicense = '''
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
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final String amstelvarLicense = '''
Copyright 2016 The Amstelvar Project Authors (info@fontbureau.com)
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL
-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.
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DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
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PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
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''';
}

52
experimental/varfont_shader_puzzle/lib/styles.dart Normal file
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@@ -0,0 +1,52 @@
// Copyright 2023 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
class TextStyles {
const TextStyles({Key? key});
static TextStyle bodyStyle() {
return const TextStyle(
fontFamily: 'Roboto',
fontSize: 16,
color: Colors.black,
fontWeight: FontWeight.w400,
height: 1.5,
);
}
static TextStyle headlineStyle() {
return const TextStyle(
fontFamily: 'Roboto',
fontSize: 16,
color: Colors.black,
fontWeight: FontWeight.w700,
height: 1.5,
);
}
}
class ButtonStyles {
static ButtonStyle style() {
return ButtonStyle(
fixedSize:
MaterialStateProperty.resolveWith<Size>((Set<MaterialState> states) {
return const Size(100, 36);
}),
shape: MaterialStateProperty.resolveWith<OutlinedBorder>(
(Set<MaterialState> states) {
return const RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(18)));
}),
overlayColor: null,
backgroundColor: MaterialStateProperty.resolveWith<Color?>(
(Set<MaterialState> states) {
if (states.contains(MaterialState.hovered)) {
return Colors.black; // Hovered bg (for desktop with mouse)
}
return Colors.grey[600]; // Default bg
}),
);
}
}