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lum_platform_image_converter
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chore: example project

This commit is contained in:
Koji Wakamiya 2025-12-08 11:03:46 +09:00
parent 8f102fd24e
commit af7d73d086
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5 changed files with 432 additions and 135 deletions
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22
example/ios/Runner.xcodeproj/project.pbxproj
View File

@ -14,6 +14,7 @@
97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
78A318202AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage in Frameworks */ = {isa = PBXBuildFile; productRef = 78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */; };
/* End PBXBuildFile section */
/* Begin PBXContainerItemProxy section */
@ -55,6 +56,7 @@
97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
78E0A7A72DC9AD7400C4905E /* FlutterGeneratedPluginSwiftPackage */ = {isa = PBXFileReference; lastKnownFileType = wrapper; name = FlutterGeneratedPluginSwiftPackage; path = Flutter/ephemeral/Packages/FlutterGeneratedPluginSwiftPackage; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@ -62,6 +64,7 @@
isa = PBXFrameworksBuildPhase;
buildActionMask = 2147483647;
files = (
78A318202AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage in Frameworks */,
);
runOnlyForDeploymentPostprocessing = 0;
};
@ -79,6 +82,7 @@
9740EEB11CF90186004384FC /* Flutter */ = {
isa = PBXGroup;
children = (
78E0A7A72DC9AD7400C4905E /* FlutterGeneratedPluginSwiftPackage */,
3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
9740EEB21CF90195004384FC /* Debug.xcconfig */,
7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
@ -142,6 +146,9 @@
productType = "com.apple.product-type.bundle.unit-test";
};
97C146ED1CF9000F007C117D /* Runner */ = {
packageProductDependencies = (
78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */,
);
isa = PBXNativeTarget;
buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
buildPhases = (
@ -165,6 +172,9 @@
/* Begin PBXProject section */
97C146E61CF9000F007C117D /* Project object */ = {
packageReferences = (
781AD8BC2B33823900A9FFBB /* XCLocalSwiftPackageReference "Flutter/ephemeral/Packages/FlutterGeneratedPluginSwiftPackage" */,
);
isa = PBXProject;
attributes = {
BuildIndependentTargetsInParallel = YES;
@ -611,6 +621,18 @@
defaultConfigurationName = Release;
};
/* End XCConfigurationList section */
/* Begin XCLocalSwiftPackageReference section */
781AD8BC2B33823900A9FFBB /* XCLocalSwiftPackageReference "Flutter/ephemeral/Packages/FlutterGeneratedPluginSwiftPackage" */ = {
isa = XCLocalSwiftPackageReference;
relativePath = Flutter/ephemeral/Packages/FlutterGeneratedPluginSwiftPackage;
};
/* End XCLocalSwiftPackageReference section */
/* Begin XCSwiftPackageProductDependency section */
78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */ = {
isa = XCSwiftPackageProductDependency;
productName = FlutterGeneratedPluginSwiftPackage;
};
/* End XCSwiftPackageProductDependency section */
};
rootObject = 97C146E61CF9000F007C117D /* Project object */;
}

18
example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
View File

@ -5,6 +5,24 @@
<BuildAction
parallelizeBuildables = "YES"
buildImplicitDependencies = "YES">
<PreActions>
<ExecutionAction
ActionType = "Xcode.IDEStandardExecutionActionsCore.ExecutionActionType.ShellScriptAction">
<ActionContent
title = "Run Prepare Flutter Framework Script"
scriptText = "/bin/sh &quot;$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh&quot; prepare&#10;">
<EnvironmentBuildable>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "97C146ED1CF9000F007C117D"
BuildableName = "Runner.app"
BlueprintName = "Runner"
ReferencedContainer = "container:Runner.xcodeproj">
</BuildableReference>
</EnvironmentBuildable>
</ActionContent>
</ExecutionAction>
</PreActions>
<BuildActionEntries>
<BuildActionEntry
buildForTesting = "YES"

160
example/lib/main.dart
View File

@ -1,72 +1,142 @@
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:typed_data';
import 'package:image_ffi/image_ffi.dart' as image_ffi;
import 'package:flutter/material.dart';
import 'package:image_ffi/image_ffi.dart';
import 'package:image_picker/image_picker.dart';
void main() {
runApp(const MyApp());
runApp(const MainApp());
}
class MyApp extends StatefulWidget {
const MyApp({super.key});
class MainApp extends StatelessWidget {
const MainApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
Widget build(BuildContext context) {
return MaterialApp(
title: 'Image FFI Demo',
theme: ThemeData.light(),
home: MainPage(),
);
}
}
class _MyAppState extends State<MyApp> {
late int sumResult;
late Future<int> sumAsyncResult;
class MainPage extends StatefulWidget {
const MainPage({super.key});
@override
void initState() {
super.initState();
sumResult = image_ffi.sum(1, 2);
sumAsyncResult = image_ffi.sumAsync(3, 4);
State<MainPage> createState() => _MainPageState();
}
class _MainPageState extends State<MainPage> {
Uint8List? _originalImage;
String? _originalName;
Uint8List? _convertedImage;
String? _convertedFormat;
int? _convertElapsedMs;
bool _isLoading = false;
Future<void> _pickImage() async {
final picker = ImagePicker();
final pickedFile = await picker.pickImage(source: ImageSource.gallery);
if (pickedFile != null) {
_originalImage = await pickedFile.readAsBytes();
_originalName = pickedFile.name;
_convertedImage = null;
_convertedFormat = null;
_convertElapsedMs = null;
setState(() {});
}
}
Future<void> _convertImage(OutputFormat format) async {
if (_originalImage == null) return;
setState(() => _isLoading = true);
final sw = Stopwatch()..start();
try {
final converted = await ImageConverter.convert(
inputData: _originalImage!,
format: format,
quality: 90,
);
sw.stop();
_convertedImage = converted;
_convertedFormat = format.name;
_convertElapsedMs = sw.elapsedMilliseconds;
setState(() {});
} catch (e) {
if (!mounted) return;
ScaffoldMessenger.of(
context,
).showSnackBar(SnackBar(content: Text('Conversion failed: $e')));
} finally {
setState(() => _isLoading = false);
}
}
@override
Widget build(BuildContext context) {
const textStyle = TextStyle(fontSize: 25);
const spacerSmall = SizedBox(height: 10);
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Native Packages'),
),
return Scaffold(
appBar: AppBar(title: const Text('image_ffi Demo')),
body: SingleChildScrollView(
child: Container(
padding: const .all(10),
padding: const .all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'This calls a native function through FFI that is shipped as source in the package. '
'The native code is built as part of the Flutter Runner build.',
style: textStyle,
textAlign: .center,
FilledButton(
onPressed: _pickImage,
child: const Text('Pick Image'),
),
spacerSmall,
Text(
'sum(1, 2) = $sumResult',
style: textStyle,
textAlign: .center,
if (_originalImage != null) ...[
Text('Original Image ($_originalName): '),
Image.memory(_originalImage!, height: 180),
const SizedBox(height: 8),
Row(
spacing: 4,
children: [
ActionChip(
onPressed: _isLoading
? null
: () => _convertImage(OutputFormat.jpeg),
label: const Text('to JPG'),
),
spacerSmall,
FutureBuilder<int>(
future: sumAsyncResult,
builder: (BuildContext context, AsyncSnapshot<int> value) {
final displayValue =
(value.hasData) ? value.data : 'loading';
return Text(
'await sumAsync(3, 4) = $displayValue',
style: textStyle,
textAlign: .center,
);
},
ActionChip(
onPressed: _isLoading
? null
: () => _convertImage(OutputFormat.png),
label: const Text('to PNG'),
),
ActionChip(
onPressed: _isLoading
? null
: () => _convertImage(OutputFormat.webp),
label: const Text('to WebP'),
),
ActionChip(
onPressed: _isLoading
? null
: () => _convertImage(OutputFormat.heic),
label: const Text('to HEIC'),
),
],
),
],
if (_isLoading)
const Padding(
padding: .all(16),
child: Center(child: CircularProgressIndicator()),
),
if (!_isLoading && _convertedImage != null)
Column(
children: [
Text('Converted ($_convertedFormat):'),
Image.memory(_convertedImage!, height: 180),
Text('Size: ${_convertedImage!.lengthInBytes} bytes'),
if (_convertElapsedMs != null)
Text('Convert time: $_convertElapsedMs ms'),
],
),
],
),
),
);

273
example/pubspec.lock
View File

@ -1,6 +1,14 @@
# Generated by pub
# See https://dart.dev/tools/pub/glossary#lockfile
packages:
args:
dependency: transitive
description:
name: args
sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
url: "https://pub.dev"
source: hosted
version: "2.7.0"
async:
dependency: transitive
description:
@ -33,6 +41,14 @@ packages:
url: "https://pub.dev"
source: hosted
version: "1.1.2"
code_assets:
dependency: transitive
description:
name: code_assets
sha256: ae0db647e668cbb295a3527f0938e4039e004c80099dce2f964102373f5ce0b5
url: "https://pub.dev"
source: hosted
version: "0.19.10"
collection:
dependency: transitive
description:
@ -41,14 +57,22 @@ packages:
url: "https://pub.dev"
source: hosted
version: "1.19.1"
cupertino_icons:
dependency: "direct main"
cross_file:
dependency: transitive
description:
name: cupertino_icons
sha256: ba631d1c7f7bef6b729a622b7b752645a2d076dba9976925b8f25725a30e1ee6
name: cross_file
sha256: "701dcfc06da0882883a2657c445103380e53e647060ad8d9dfb710c100996608"
url: "https://pub.dev"
source: hosted
version: "1.0.8"
version: "0.3.5+1"
crypto:
dependency: transitive
description:
name: crypto
sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
url: "https://pub.dev"
source: hosted
version: "3.0.7"
fake_async:
dependency: transitive
description:
@ -57,6 +81,54 @@ packages:
url: "https://pub.dev"
source: hosted
version: "1.3.3"
ffi:
dependency: transitive
description:
name: ffi
sha256: "289279317b4b16eb2bb7e271abccd4bf84ec9bdcbe999e278a94b804f5630418"
url: "https://pub.dev"
source: hosted
version: "2.1.4"
file:
dependency: transitive
description:
name: file
sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
url: "https://pub.dev"
source: hosted
version: "7.0.1"
file_selector_linux:
dependency: transitive
description:
name: file_selector_linux
sha256: "2567f398e06ac72dcf2e98a0c95df2a9edd03c2c2e0cacd4780f20cdf56263a0"
url: "https://pub.dev"
source: hosted
version: "0.9.4"
file_selector_macos:
dependency: transitive
description:
name: file_selector_macos
sha256: "5e0bbe9c312416f1787a68259ea1505b52f258c587f12920422671807c4d618a"
url: "https://pub.dev"
source: hosted
version: "0.9.5"
file_selector_platform_interface:
dependency: transitive
description:
name: file_selector_platform_interface
sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
url: "https://pub.dev"
source: hosted
version: "2.7.0"
file_selector_windows:
dependency: transitive
description:
name: file_selector_windows
sha256: "62197474ae75893a62df75939c777763d39c2bc5f73ce5b88497208bc269abfd"
url: "https://pub.dev"
source: hosted
version: "0.9.3+5"
flutter:
dependency: "direct main"
description: flutter
@ -70,11 +142,56 @@ packages:
url: "https://pub.dev"
source: hosted
version: "6.0.0"
flutter_plugin_android_lifecycle:
dependency: transitive
description:
name: flutter_plugin_android_lifecycle
sha256: ee8068e0e1cd16c4a82714119918efdeed33b3ba7772c54b5d094ab53f9b7fd1
url: "https://pub.dev"
source: hosted
version: "2.0.33"
flutter_test:
dependency: "direct dev"
description: flutter
source: sdk
version: "0.0.0"
flutter_web_plugins:
dependency: transitive
description: flutter
source: sdk
version: "0.0.0"
glob:
dependency: transitive
description:
name: glob
sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
url: "https://pub.dev"
source: hosted
version: "2.1.3"
hooks:
dependency: transitive
description:
name: hooks
sha256: "5410b9f4f6c9f01e8ff0eb81c9801ea13a3c3d39f8f0b1613cda08e27eab3c18"
url: "https://pub.dev"
source: hosted
version: "0.20.5"
http:
dependency: transitive
description:
name: http
sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
url: "https://pub.dev"
source: hosted
version: "1.6.0"
http_parser:
dependency: transitive
description:
name: http_parser
sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
url: "https://pub.dev"
source: hosted
version: "4.1.2"
image_ffi:
dependency: "direct main"
description:
@ -82,6 +199,78 @@ packages:
relative: true
source: path
version: "0.0.1"
image_picker:
dependency: "direct main"
description:
name: image_picker
sha256: "784210112be18ea55f69d7076e2c656a4e24949fa9e76429fe53af0c0f4fa320"
url: "https://pub.dev"
source: hosted
version: "1.2.1"
image_picker_android:
dependency: transitive
description:
name: image_picker_android
sha256: "5e9bf126c37c117cf8094215373c6d561117a3cfb50ebc5add1a61dc6e224677"
url: "https://pub.dev"
source: hosted
version: "0.8.13+10"
image_picker_for_web:
dependency: transitive
description:
name: image_picker_for_web
sha256: "66257a3191ab360d23a55c8241c91a6e329d31e94efa7be9cf7a212e65850214"
url: "https://pub.dev"
source: hosted
version: "3.1.1"
image_picker_ios:
dependency: transitive
description:
name: image_picker_ios
sha256: "956c16a42c0c708f914021666ffcd8265dde36e673c9fa68c81f7d085d9774ad"
url: "https://pub.dev"
source: hosted
version: "0.8.13+3"
image_picker_linux:
dependency: transitive
description:
name: image_picker_linux
sha256: "1f81c5f2046b9ab724f85523e4af65be1d47b038160a8c8deed909762c308ed4"
url: "https://pub.dev"
source: hosted
version: "0.2.2"
image_picker_macos:
dependency: transitive
description:
name: image_picker_macos
sha256: "86f0f15a309de7e1a552c12df9ce5b59fe927e71385329355aec4776c6a8ec91"
url: "https://pub.dev"
source: hosted
version: "0.2.2+1"
image_picker_platform_interface:
dependency: transitive
description:
name: image_picker_platform_interface
sha256: "567e056716333a1647c64bb6bd873cff7622233a5c3f694be28a583d4715690c"
url: "https://pub.dev"
source: hosted
version: "2.11.1"
image_picker_windows:
dependency: transitive
description:
name: image_picker_windows
sha256: d248c86554a72b5495a31c56f060cf73a41c7ff541689327b1a7dbccc33adfae
url: "https://pub.dev"
source: hosted
version: "0.2.2"
jni:
dependency: transitive
description:
name: jni
sha256: "8706a77e94c76fe9ec9315e18949cc9479cc03af97085ca9c1077b61323ea12d"
url: "https://pub.dev"
source: hosted
version: "0.15.2"
leak_tracker:
dependency: transitive
description:
@ -114,6 +303,14 @@ packages:
url: "https://pub.dev"
source: hosted
version: "6.0.0"
logging:
dependency: transitive
description:
name: logging
sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
url: "https://pub.dev"
source: hosted
version: "1.3.0"
matcher:
dependency: transitive
description:
@ -138,6 +335,38 @@ packages:
url: "https://pub.dev"
source: hosted
version: "1.17.0"
mime:
dependency: transitive
description:
name: mime
sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
url: "https://pub.dev"
source: hosted
version: "2.0.0"
native_toolchain_c:
dependency: transitive
description:
name: native_toolchain_c
sha256: f8872ea6c7a50ce08db9ae280ca2b8efdd973157ce462826c82f3c3051d154ce
url: "https://pub.dev"
source: hosted
version: "0.17.2"
objective_c:
dependency: transitive
description:
name: objective_c
sha256: c12701c978eacda8d8a9be1469f005e26bf16a903945982b94f77d7a9dbeea45
url: "https://pub.dev"
source: hosted
version: "9.2.1"
package_config:
dependency: transitive
description:
name: package_config
sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
url: "https://pub.dev"
source: hosted
version: "2.2.0"
path:
dependency: transitive
description:
@ -154,6 +383,14 @@ packages:
url: "https://pub.dev"
source: hosted
version: "2.1.8"
pub_semver:
dependency: transitive
description:
name: pub_semver
sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
url: "https://pub.dev"
source: hosted
version: "2.2.0"
sky_engine:
dependency: transitive
description: flutter
@ -207,6 +444,14 @@ packages:
url: "https://pub.dev"
source: hosted
version: "0.7.7"
typed_data:
dependency: transitive
description:
name: typed_data
sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
url: "https://pub.dev"
source: hosted
version: "1.4.0"
vector_math:
dependency: transitive
description:
@ -223,6 +468,22 @@ packages:
url: "https://pub.dev"
source: hosted
version: "15.0.2"
web:
dependency: transitive
description:
name: web
sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
url: "https://pub.dev"
source: hosted
version: "1.1.1"
yaml:
dependency: transitive
description:
name: yaml
sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
url: "https://pub.dev"
source: hosted
version: "3.1.3"
sdks:
dart: ">=3.10.0 <4.0.0"
flutter: ">=3.35.0"
flutter: ">=3.35.6"

78
example/pubspec.yaml
View File

@ -1,98 +1,24 @@
name: image_ffi_example
description: "Demonstrates how to use the image_ffi plugin."
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
publish_to: 'none'
version: 1.0.0+1
environment:
sdk: ^3.10.0
flutter: '>=3.35.0'
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
image_ffi:
# When depending on this package from a real application you should use:
# image_ffi: ^x.y.z
# See https://dart.dev/tools/pub/dependencies#version-constraints
# The example app is bundled with the plugin so we use a path dependency on
# the parent directory to use the current plugin's version.
path: ../
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.8
image_picker:
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^6.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/to/resolution-aware-images
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/to/asset-from-package
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/to/font-from-package