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feat(macos): added support for macos icons
closes fluttercommunity#393
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| import 'dart:convert'; | ||
| import 'dart:io'; | ||
|
|
||
| import 'package:flutter_launcher_icons/abs/icon_generator.dart'; | ||
| import 'package:flutter_launcher_icons/constants.dart' as constants; | ||
| import 'package:flutter_launcher_icons/custom_exceptions.dart'; | ||
| import 'package:flutter_launcher_icons/macos/macos_icon_template.dart'; | ||
| import 'package:flutter_launcher_icons/utils.dart' as utils; | ||
| import 'package:image/image.dart'; | ||
| import 'package:path/path.dart' as path; | ||
|
|
||
| /// A [IconGenerator] implementation for macos | ||
| class MacOSIconGenerator extends IconGenerator { | ||
| static const _iconSizeTemplates = <MacOSIconTemplate>[ | ||
| MacOSIconTemplate(16, 1), | ||
| MacOSIconTemplate(16, 2), | ||
| MacOSIconTemplate(32, 1), | ||
| MacOSIconTemplate(32, 2), | ||
| MacOSIconTemplate(128, 1), | ||
| MacOSIconTemplate(128, 2), | ||
| MacOSIconTemplate(256, 1), | ||
| MacOSIconTemplate(256, 2), | ||
| MacOSIconTemplate(512, 1), | ||
| MacOSIconTemplate(512, 2), | ||
| ]; | ||
|
|
||
| /// Creates a instance of [MacOSIconGenerator] | ||
| MacOSIconGenerator(IconGeneratorContext context) : super(context, 'MacOS'); | ||
|
|
||
| @override | ||
| void createIcons() { | ||
| final imgFilePath = path.join( | ||
| context.prefixPath, | ||
| context.config.macOSConfig!.imagePath ?? context.config.imagePath, | ||
| ); | ||
|
|
||
| context.logger.verbose('Decoding and loading image file at $imgFilePath...'); | ||
| final imgFile = utils.decodeImageFile(imgFilePath); | ||
| if (imgFile == null) { | ||
| context.logger.error('Image File not found at give path $imgFilePath...'); | ||
| throw FileNotFoundException(imgFilePath); | ||
| } | ||
|
|
||
| context.logger.verbose('Generating icons $imgFilePath...'); | ||
| _generateIcons(imgFile); | ||
| context.logger.verbose('Updating contents.json'); | ||
| _updateContentsFile(); | ||
| } | ||
|
|
||
| @override | ||
| bool validateRequirements() { | ||
| context.logger.verbose('Checking $platformName config...'); | ||
| final macOSConfig = context.macOSConfig; | ||
|
|
||
| if (macOSConfig == null || !macOSConfig.generate) { | ||
| context.logger | ||
| ..verbose('$platformName config is missing or "flutter_icons.macos.generate" is false. Skipped...') | ||
| ..verbose(macOSConfig); | ||
| return false; | ||
| } | ||
|
|
||
| if (macOSConfig.imagePath == null && context.config.imagePath == null) { | ||
| context.logger | ||
| ..verbose({ | ||
| 'flutter_icons.macos.image_path': macOSConfig.imagePath, | ||
| 'flutter_icons.image_path': context.config.imagePath, | ||
| }) | ||
| ..error( | ||
| 'Missing image_path. Either provide "flutter_icons.macos.image_path" or "flutter_icons.image_path"', | ||
| ); | ||
|
|
||
| return false; | ||
| } | ||
|
|
||
| // this files and folders should exist to create macos icons | ||
| final enitiesToCheck = [ | ||
| path.join(context.prefixPath, constants.macOSDirPath), | ||
| path.join(context.prefixPath, constants.macOSIconsDirPath), | ||
| path.join(context.prefixPath, constants.macOSContentsFilePath), | ||
| ]; | ||
|
|
||
| final failedEntityPath = utils.areFSEntiesExist(enitiesToCheck); | ||
| if (failedEntityPath != null) { | ||
| context.logger.error('$failedEntityPath this file or folder is required to generate $platformName icons'); | ||
| return false; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
||
| void _generateIcons(Image image) { | ||
| final iconsDir = utils.createDirIfNotExist(path.join(context.prefixPath, constants.macOSIconsDirPath)); | ||
|
|
||
| for (final template in _iconSizeTemplates) { | ||
| final resizedImg = utils.createResizedImage(template.scaledSize, image); | ||
| final iconFile = utils.createFileIfNotExist(path.join(context.prefixPath, iconsDir.path, template.iconFile)); | ||
| iconFile.writeAsBytesSync(encodePng(resizedImg)); | ||
| } | ||
| } | ||
|
|
||
| void _updateContentsFile() { | ||
| final contentsFilePath = File(path.join(context.prefixPath, constants.macOSContentsFilePath)); | ||
| final contentsConfig = jsonDecode(contentsFilePath.readAsStringSync()) as Map<String, dynamic>; | ||
| contentsConfig | ||
| ..remove('images') | ||
| ..['images'] = _iconSizeTemplates.map<Map<String, dynamic>>((e) => e.iconContent).toList(); | ||
|
|
||
| contentsFilePath.writeAsStringSync(utils.prettifyJsonEncode(contentsConfig)); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| /// A macOS icon template | ||
| class MacOSIconTemplate { | ||
| /// Icon size | ||
| final int size; | ||
|
|
||
| /// Icon scale | ||
| final int scale; | ||
|
|
||
| /// Creates an instance of [MacOSIconTemplate] | ||
| /// | ||
| const MacOSIconTemplate(this.size, this.scale); | ||
|
|
||
| /// Icon content for contents.json' s images | ||
| /// | ||
| /// ```json | ||
| /// { | ||
| /// "size" : "16x16", | ||
| /// "idiom" : "mac", | ||
| /// "filename" : "app_icon_16.png", | ||
| /// "scale" : "1x" | ||
| /// } | ||
| /// ``` | ||
| Map<String, dynamic> get iconContent { | ||
| return <String, dynamic>{ | ||
| 'size': '${size}x$size', | ||
| 'idiom': 'mac', | ||
| 'filename': iconFile, | ||
| 'scale': '${scale}x', | ||
| }; | ||
| } | ||
|
|
||
| /// Icon file name with extension | ||
| /// | ||
| /// `app_icon_16.png` | ||
| String get iconFile => 'app_icon_$scaledSize.png'; | ||
|
|
||
| /// Image size after computing scale | ||
| int get scaledSize => size * scale; | ||
| } |
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