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Web support (beta) #26

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Web support (beta) #26

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d8bdbd5
feat: web support (beta)
ReniDelonzek May 2, 2021
d806e98
fix: Save image if not on the web
ReniDelonzek May 20, 2021
922f5e0
fix: compress png
ReniDelonzek Jul 16, 2021
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1 change: 1 addition & 0 deletions example/.flutter-plugins-dependencies
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"image_picker","path":"/Users/reni/Downloads/Programas/flutter/.pub-cache/hosted/pub.dartlang.org/image_picker-0.4.12+1/","dependencies":[]},{"name":"path_provider","path":"/Users/reni/Downloads/Programas/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-0.4.1/","dependencies":[]}],"android":[{"name":"image_picker","path":"/Users/reni/Downloads/Programas/flutter/.pub-cache/hosted/pub.dartlang.org/image_picker-0.4.12+1/","dependencies":[]},{"name":"path_provider","path":"/Users/reni/Downloads/Programas/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-0.4.1/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"image_picker","dependencies":[]},{"name":"path_provider","dependencies":[]}],"date_created":"2021-05-01 15:40:37.479609","version":"2.1.0-12.2.pre"}
14 changes: 14 additions & 0 deletions example/ios/Flutter/flutter_export_environment.sh
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@@ -0,0 +1,14 @@
#!/bin/sh
# This is a generated file; do not edit or check into version control.
export "FLUTTER_ROOT=/Users/reni/Downloads/Programas/flutter"
export "FLUTTER_APPLICATION_PATH=/Users/reni/Downloads/Projetos/Flutter/libs/flutter_luban/example"
export "COCOAPODS_PARALLEL_CODE_SIGN=true"
export "FLUTTER_TARGET=lib/main.dart"
export "FLUTTER_BUILD_DIR=build"
export "SYMROOT=${SOURCE_ROOT}/../build/ios"
export "FLUTTER_BUILD_NAME=1.0.0"
export "FLUTTER_BUILD_NUMBER=1"
export "DART_OBFUSCATION=false"
export "TRACK_WIDGET_CREATION=false"
export "TREE_SHAKE_ICONS=false"
export "PACKAGE_CONFIG=.packages"
157 changes: 63 additions & 94 deletions lib/src/flutter_luban.dart
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Expand Up @@ -3,15 +3,29 @@ import 'dart:io';
import 'dart:isolate';
import 'dart:math';
import 'dart:typed_data';
import 'package:flutter/foundation.dart' as Foundation;

import 'package:flutter/foundation.dart';
import 'package:image/image.dart';

class Luban {
Luban._();

static Future<String?> compressImage(CompressObject object) async {
return compute(_lubanCompress, object);
static Future<List<int>?> compressImage(CompressObject object) async {
if (Foundation.kIsWeb || (object.path == null || object.path!.isEmpty)) {
return compute(_lubanCompress, object);
} else {
List<int>? bytes = await compute(_lubanCompress, object);
if (bytes == null) {
return null;
}
File file = File(object.path!);
if (!file.existsSync()) {
file.createSync(recursive: true);
}
file.writeAsBytesSync(bytes, flush: true);
return bytes;
}
}

static Future<dynamic> compressImageQueue(CompressObject object) async {
Expand All @@ -23,7 +37,7 @@ class Luban {
return answer.first;
}

static Future<List<String?>> compressImageList(
static Future<List<List<int>?>> compressImageList(
List<CompressObject> objects) async {
return compute(_lubanCompressList, objects);
}
Expand All @@ -38,36 +52,21 @@ class Luban {
});
}

static List<String?> _lubanCompressList(List<CompressObject> objects) {
var results = [];
static List<List<int>?> _lubanCompressList(List<CompressObject> objects) {
List<List<int>?> results = [];
objects.forEach((_o) {
results.add(_lubanCompress(_o));
});
return results as List<String?>;
}

static bool _parseType(String path, List<String> suffix) {
bool _result = false;
for (int i = 0; i < suffix.length; i++) {
if (path.endsWith(suffix[i])) {
_result = true;
break;
}
}
return _result;
return results;
}

static String? _lubanCompress(CompressObject object) {
Image image = decodeImage(object.imageFile!.readAsBytesSync())!;
var length = object.imageFile!.lengthSync();
print(object.imageFile!.path);
static List<int>? _lubanCompress(CompressObject object) {
Image image = decodeImage(object.bytes)!;
var length = object.bytes.lengthInBytes;
bool isLandscape = false;
const List<String> jpgSuffix = ["jpg", "jpeg", "JPG", "JPEG"];
const List<String> pngSuffix = ["png", "PNG"];
bool isJpg = _parseType(object.imageFile!.path, jpgSuffix);
bool isPng = false;

if (!isJpg) isPng = _parseType(object.imageFile!.path, pngSuffix);
bool isJpg =
object.imageType == ImageType.JPEG || object.imageType == ImageType.JPG;

double size;
int fixelW = image.width;
Expand All @@ -85,26 +84,13 @@ class Luban {
} else {
scale = fixelW / fixelH;
}
var decodedImageFile;
if (isJpg)
decodedImageFile = new File(
object.path! + '/img_${DateTime.now().millisecondsSinceEpoch}.jpg');
else if (isPng)
decodedImageFile = new File(
object.path! + '/img_${DateTime.now().millisecondsSinceEpoch}.png');
else
throw Exception("flutter_luban don't support this image type");

if (decodedImageFile.existsSync()) {
decodedImageFile.deleteSync();
}
List<int> bytes;
var imageSize = length / 1024;
if (scale <= 1 && scale > 0.5625) {
if (fixelH < 1664) {
if (imageSize < 150) {
decodedImageFile
.writeAsBytesSync(encodeJpg(image, quality: object.quality));
return decodedImageFile.path;
bytes = (encodeJpg(image, quality: object.quality));
return bytes;
}
size = (fixelW * fixelH) / pow(1664, 2) * 150;
size = size < 60 ? 60 : size;
Expand All @@ -127,9 +113,8 @@ class Luban {
}
} else if (scale <= 0.5625 && scale >= 0.5) {
if (fixelH < 1280 && imageSize < 200) {
decodedImageFile
.writeAsBytesSync(encodeJpg(image, quality: object.quality));
return decodedImageFile.path;
bytes = encodeJpg(image, quality: object.quality);
return bytes;
}
int multiple = fixelH / 1280 == 0 ? 1 : fixelH ~/ 1280;
thumbW = fixelW / multiple;
Expand All @@ -144,9 +129,8 @@ class Luban {
size = size < 100 ? 100 : size;
}
if (imageSize < size) {
decodedImageFile
.writeAsBytesSync(encodeJpg(image, quality: object.quality));
return decodedImageFile.path;
bytes = encodeJpg(image, quality: object.quality);
return bytes;
}
Image smallerImage;
if (isLandscape) {
Expand All @@ -159,54 +143,46 @@ class Luban {
height: object.autoRatio ? null : thumbH.toInt());
}

if (decodedImageFile.existsSync()) {
decodedImageFile.deleteSync();
}
if (object.mode == CompressMode.LARGE2SMALL) {
_large2SmallCompressImage(
bytes = _large2SmallCompressImage(
image: smallerImage,
file: decodedImageFile,
quality: object.quality,
targetSize: size,
step: object.step,
isJpg: isJpg,
);
} else if (object.mode == CompressMode.SMALL2LARGE) {
_small2LargeCompressImage(
bytes = _small2LargeCompressImage(
image: smallerImage,
file: decodedImageFile,
quality: object.step,
targetSize: size,
step: object.step,
isJpg: isJpg,
);
} else {
if (imageSize < 500) {
_large2SmallCompressImage(
bytes = _large2SmallCompressImage(
image: smallerImage,
file: decodedImageFile,
quality: object.quality,
targetSize: size,
step: object.step,
isJpg: isJpg,
);
} else {
_small2LargeCompressImage(
bytes = _small2LargeCompressImage(
image: smallerImage,
file: decodedImageFile,
quality: object.step,
targetSize: size,
step: object.step,
isJpg: isJpg,
);
}
}
return decodedImageFile.path;
return bytes;
}

static _large2SmallCompressImage({
static List<int> _large2SmallCompressImage({
Image? image,
File? file,
quality,
targetSize,
step,
Expand All @@ -217,29 +193,25 @@ class Luban {
var tempImageSize = Uint8List.fromList(im).lengthInBytes;
if (tempImageSize / 1024 > targetSize && quality > step) {
quality -= step;
_large2SmallCompressImage(
return _large2SmallCompressImage(
image: image,
file: file,
quality: quality,
targetSize: targetSize,
step: step,
);
return;
}
file!.writeAsBytesSync(im);
return im;
} else {
_compressPng(
return _compressPng(
image: image!,
file: file,
targetSize: targetSize,
large2Small: true,
);
}
}

static _small2LargeCompressImage({
static List<int> _small2LargeCompressImage({
Image? image,
File? file,
quality,
targetSize,
step,
Expand All @@ -250,31 +222,27 @@ class Luban {
var tempImageSize = Uint8List.fromList(im).lengthInBytes;
if (tempImageSize / 1024 < targetSize && quality <= 100) {
quality += step;
_small2LargeCompressImage(
return _small2LargeCompressImage(
image: image,
file: file,
quality: quality,
targetSize: targetSize,
step: step,
isJpg: isJpg,
);
return;
}
file!.writeAsBytesSync(im);
return im;
} else {
_compressPng(
return _compressPng(
image: image!,
file: file,
targetSize: targetSize,
large2Small: false,
);
}
}

///level 1~9 level++ -> image--
static void _compressPng({
static List<int> _compressPng({
required Image image,
File? file,
level,
targetSize,
required bool large2Small,
Expand All @@ -286,22 +254,20 @@ class Luban {
_level = level ?? 9;
}
List<int> im = encodePng(image, level: _level);
if (_level > 9 || _level < 1) {
if (_level >= 9 || _level <= 1) {
} else {
var tempImageSize = Uint8List.fromList(im).lengthInBytes;
if (tempImageSize / 1024 > targetSize) {
_compressPng(
return _compressPng(
image: image,
file: file,
targetSize: targetSize,
level: large2Small ? _level + 1 : _level - 1,
large2Small: large2Small,
);
return;
//return;
}
}

file!.writeAsBytesSync(im);
return im;
}
}

Expand All @@ -311,22 +277,25 @@ enum CompressMode {
AUTO,
}

enum ImageType { JPG, JPEG, PNG }

class CompressObject {
final File? imageFile;
final String? path;
final Uint8List bytes;
final ImageType? imageType;
final CompressMode mode;
final int quality;
final int step;
final String? path;

///If you are not sure whether the image detail property is correct, set true, otherwise the compressed ratio may be incorrect
final bool autoRatio;

CompressObject({
this.imageFile,
this.path,
this.mode: CompressMode.AUTO,
this.quality: 80,
this.step: 6,
this.autoRatio = true,
});
CompressObject(
{required this.bytes,
required this.imageType,
this.mode: CompressMode.AUTO,
this.quality: 80,
this.step: 6,
this.autoRatio = true,
this.path});
}
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