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main.dart
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main.dart
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import 'dart:developer';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:pdf_manipulator/pdf_manipulator.dart';
import 'package:pick_or_save/pick_or_save.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'PDF Manipulator example',
debugShowCheckedModeBanner: false,
theme: ThemeData(useMaterial3: true),
darkTheme: ThemeData.dark(useMaterial3: true),
themeMode: ThemeMode.system,
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key});
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final _pdfManipulatorPlugin = PdfManipulator();
final _pickOrSavePlugin = PickOrSave();
bool _isBusy = false;
final bool _localOnly = false;
final bool getCachedFilePath = false;
List<bool> isSelected = [true, false];
List<String>? _pickedFilesPathsForMerge;
String? _mergedPDFsPath;
String? _pickedFilePathForSplit;
List<String>? _splitPDFPaths;
int pageCount = 2;
int byteSize = 1000000;
List<int> pageNumbers = [2, 5, 9];
String pageRange = "1-3,5-8";
String? _pickedFilePathForRotateDeleteReorder;
String? _pdfPageRotatorDeleterReorderPath;
List<PageRotationInfo> pagesRotationInfo = [
PageRotationInfo(pageNumber: 1, rotationAngle: 90)
];
List<int> pageNumbersForDeleter = [2, 4];
List<int>? pageNumbersForReorder = [9, 8, 7, 6, 5, 4, 3, 2, 1, 10];
String? _pickedFilePathForCompressingPDF;
String? _compressedPDFPath;
int imageQuality = 70;
double imageScale = 0.5;
String? _pickedFilePathForWatermarkingPDF;
String? _watermarkedPDFPath;
String watermarkText = "My Watermark";
String? _pickedFilePathForEncryptingPDF;
String? _encryptedPDFPath;
String userPassword = "userpw";
bool standardEncryptionAES128 = true;
String? _pickedFilePathForDecryptingPDF;
String? _decryptedPDFPath;
String userOrOwnerPassword = "userpw";
List<String>? _pickedFilePathsForImagesToPDF;
List<String>? _imagesToPDFPath;
bool createSinglePdf = true;
String? _pickedFilePathForPageSizeInfoOfPDF;
String? _pickedFilePathForValidityAndProtectionInfoOfPDF;
Future<String?> _cancelTask() async {
String? result;
try {
result = await _pdfManipulatorPlugin.cancelManipulations();
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<List<String>?> _filePicker(FilePickerParams params) async {
List<String>? result;
try {
setState(() {
_isBusy = true;
});
result = await _pickOrSavePlugin.filePicker(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
if (!mounted) return result;
setState(() {
_isBusy = false;
});
return result;
}
Future<List<String>?> _fileSaver(FileSaverParams params) async {
List<String>? result;
try {
setState(() {
_isBusy = true;
});
result = await _pickOrSavePlugin.fileSaver(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
if (!mounted) return result;
setState(() {
_isBusy = false;
});
return result;
}
Future<String?> _mergePDFs(PDFMergerParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.mergePDFs(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<List<String>?> _splitPDF(PDFSplitterParams params) async {
List<String>? result;
try {
result = await _pdfManipulatorPlugin.splitPDF(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<String?> _pdfPageRotatorDeleterReorder(
PDFPageRotatorDeleterReorderParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.pdfPageRotatorDeleterReorder(
params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<String?> _pdfCompressor(PDFCompressorParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.pdfCompressor(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<String?> _pdfWatermark(PDFWatermarkParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.pdfWatermark(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<String?> _pdfEncryption(PDFEncryptionParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.pdfEncryption(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<String?> _pdfDecryption(PDFDecryptionParams params) async {
String? result;
try {
result = await _pdfManipulatorPlugin.pdfDecryption(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<List<String>?> _imagesToPdf(ImagesToPDFsParams params) async {
List<String>? result;
try {
result = await _pdfManipulatorPlugin.imagesToPdfs(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<List<PageSizeInfo>?> _pdfPagesSize(PDFPagesSizeParams params) async {
List<PageSizeInfo>? result;
try {
result = await _pdfManipulatorPlugin.pdfPagesSize(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
Future<PdfValidityAndProtection?> _pdfValidityAndProtection(
PDFValidityAndProtectionParams params) async {
PdfValidityAndProtection? result;
try {
result =
await _pdfManipulatorPlugin.pdfValidityAndProtection(params: params);
} on PlatformException catch (e) {
log(e.toString());
} catch (e) {
log(e.toString());
}
return result;
}
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).hideCurrentSnackBar();
},
child: Scaffold(
appBar: AppBar(
title: const Text('PDF Manipulator example'),
),
body: SingleChildScrollView(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"Picking Result Type",
style: Theme.of(context).textTheme.titleLarge,
),
const SizedBox(height: 8),
ToggleButtons(
onPressed: (int index) {
setState(() {
for (int buttonIndex = 0;
buttonIndex < isSelected.length;
buttonIndex++) {
if (buttonIndex == index) {
isSelected[buttonIndex] = true;
} else {
isSelected[buttonIndex] = false;
}
}
});
},
isSelected: isSelected,
children: const <Widget>[
Text(" URI "),
Text(" Cached path "),
],
),
const SizedBox(height: 16),
Text(
"Cancel All Tasks",
style: Theme.of(context).textTheme.titleLarge,
),
const SizedBox(height: 8),
CustomButton(
onPressed: () async {
await _cancelTask();
},
buttonText: "Cancel all tasks ",
),
const SizedBox(height: 16),
Text(
"Merging multiple PDFs",
style: Theme.of(context).textTheme.titleLarge,
),
const SizedBox(height: 8),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick multiple PDF files',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
enableMultipleSelection: true,
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilesPathsForMerge = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Merge',
onPressed: _pickedFilesPathsForMerge == null
? null
: _pickedFilesPathsForMerge!.length < 2
? null
: () async {
final params = PDFMergerParams(
pdfsPaths: _pickedFilesPathsForMerge!,
);
String? result = await _mergePDFs(params);
if (result != null && result.isNotEmpty) {
setState(() {
_mergedPDFsPath = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Save merged PDF',
onPressed: _mergedPDFsPath == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: [
SaveFileInfo(
filePath: _mergedPDFsPath,
fileName: "Merged PDF.pdf")
]);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Splitting PDF",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick single PDF file',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilePathForSplit = result[0];
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
const Divider(),
CustomButton(
buttonText: 'Split PDF by page count',
onPressed: _pickedFilePathForSplit == null
? null
: () async {
final params = PDFSplitterParams(
pdfPath: _pickedFilePathForSplit!,
pageCount: pageCount,
);
List<String>? result =
await _splitPDF(params);
if (result != null && result.isNotEmpty) {
setState(() {
_splitPDFPaths = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"pageCount: $pageCount",
style: Theme.of(context).textTheme.labelSmall,
),
const Divider(),
CustomButton(
buttonText: 'Split PDF by byte size',
onPressed: _pickedFilePathForSplit == null
? null
: () async {
final params = PDFSplitterParams(
pdfPath: _pickedFilePathForSplit!,
byteSize: byteSize,
);
List<String>? result =
await _splitPDF(params);
if (result != null && result.isNotEmpty) {
setState(() {
_splitPDFPaths = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"byteSize: $byteSize",
style: Theme.of(context).textTheme.labelSmall,
),
CustomButton(
buttonText: 'Split PDF by page numbers',
onPressed: _pickedFilePathForSplit == null
? null
: () async {
final params = PDFSplitterParams(
pdfPath: _pickedFilePathForSplit!,
pageNumbers: pageNumbers,
);
List<String>? result =
await _splitPDF(params);
if (result != null && result.isNotEmpty) {
setState(() {
_splitPDFPaths = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"pageNumbers: $pageNumbers",
style: Theme.of(context).textTheme.labelSmall,
),
const Divider(),
CustomButton(
buttonText: 'Split PDF by page numbers',
onPressed: _pickedFilePathForSplit == null
? null
: () async {
final params = PDFSplitterParams(
pdfPath: _pickedFilePathForSplit!,
pageRange: pageRange,
);
List<String>? result =
await _splitPDF(params);
if (result != null && result.isNotEmpty) {
setState(() {
_splitPDFPaths = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"pageRange: $pageRange",
style: Theme.of(context).textTheme.labelSmall,
),
const Divider(),
CustomButton(
buttonText: 'Save split PDFs',
onPressed: _splitPDFPaths == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: List.generate(
_splitPDFPaths!.length,
(index) => SaveFileInfo(
filePath:
_splitPDFPaths![index],
fileName:
"Split PDF ${index + 1}.pdf")),
);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Rotate, Delete, Reorder PDF pages",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick single PDF file',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilePathForRotateDeleteReorder =
result[0];
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Rotate, Delete, Reorder PDF pages',
onPressed:
_pickedFilePathForRotateDeleteReorder == null
? null
: () async {
final params =
PDFPageRotatorDeleterReorderParams(
pdfPath:
_pickedFilePathForRotateDeleteReorder!,
pagesRotationInfo: pagesRotationInfo,
pageNumbersForDeleter:
pageNumbersForDeleter,
pageNumbersForReorder:
pageNumbersForReorder,
);
String? result =
await _pdfPageRotatorDeleterReorder(
params);
if (result != null && result.isNotEmpty) {
setState(() {
_pdfPageRotatorDeleterReorderPath =
result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"pagesRotationInfo: $pagesRotationInfo\npageNumbersForDeleter: $pageNumbersForDeleter\npageNumbersForReorder: $pageNumbersForReorder",
style: Theme.of(context).textTheme.labelSmall,
),
CustomButton(
buttonText: 'Save rotated, deleted, reordered PDF',
onPressed: _pdfPageRotatorDeleterReorderPath == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: [
SaveFileInfo(
filePath:
_pdfPageRotatorDeleterReorderPath,
fileName:
"Rotated, Deleted, Reordered PDF.pdf")
],
);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Compressing PDF",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick single PDF file',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilePathForCompressingPDF =
result[0];
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Compress PDF',
onPressed: _pickedFilePathForCompressingPDF == null
? null
: () async {
final params = PDFCompressorParams(
pdfPath: _pickedFilePathForCompressingPDF!,
imageQuality: imageQuality,
imageScale: imageScale,
);
String? result = await _pdfCompressor(params);
if (result != null && result.isNotEmpty) {
setState(() {
_compressedPDFPath = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"imageQuality: $imageQuality, imageScale: $imageScale",
style: Theme.of(context).textTheme.labelSmall,
),
CustomButton(
buttonText: 'Save compressed PDF',
onPressed: _compressedPDFPath == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: [
SaveFileInfo(
filePath: _compressedPDFPath,
fileName: "Compressed PDF.pdf")
],
);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Watermarking PDF",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick single PDF file',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilePathForWatermarkingPDF =
result[0];
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Watermark PDF',
onPressed: _pickedFilePathForWatermarkingPDF == null
? null
: () async {
final params = PDFWatermarkParams(
pdfPath: _pickedFilePathForWatermarkingPDF!,
text: watermarkText,
);
String? result = await _pdfWatermark(params);
if (result != null && result.isNotEmpty) {
setState(() {
_watermarkedPDFPath = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"watermarkText: $watermarkText",
style: Theme.of(context).textTheme.labelSmall,
),
CustomButton(
buttonText: 'Save watermarked PDF',
onPressed: _watermarkedPDFPath == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: [
SaveFileInfo(
filePath: _watermarkedPDFPath,
fileName: "Watermarked PDF.pdf")
],
);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Encrypt PDF",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
CustomButton(
buttonText: 'Pick single PDF file',
onPressed: _isBusy
? null
: () async {
final params = FilePickerParams(
localOnly: _localOnly,
getCachedFilePath: isSelected[1],
mimeTypesFilter: ["application/pdf"],
allowedExtensions: [".pdf"],
);
List<String>? result =
await _filePicker(params);
if (result != null && result.isNotEmpty) {
setState(() {
_pickedFilePathForEncryptingPDF =
result[0];
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
CustomButton(
buttonText: 'Encrypt PDF',
onPressed: _pickedFilePathForEncryptingPDF == null
? null
: () async {
final params = PDFEncryptionParams(
pdfPath: _pickedFilePathForEncryptingPDF!,
userPassword: userPassword,
standardEncryptionAES128:
standardEncryptionAES128,
);
String? result = await _pdfEncryption(params);
if (result != null && result.isNotEmpty) {
setState(() {
_encryptedPDFPath = result;
});
}
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
Text(
"userPassword: $userPassword, standardEncryptionAES128: $standardEncryptionAES128",
style: Theme.of(context).textTheme.labelSmall,
),
CustomButton(
buttonText: 'Save encrypted PDF',
onPressed: _encryptedPDFPath == null
? null
: _isBusy
? null
: () async {
final params = FileSaverParams(
localOnly: _localOnly,
saveFiles: [
SaveFileInfo(
filePath: _encryptedPDFPath,
fileName: "Encrypted PDF.pdf")
],
);
List<String>? result =
await _fileSaver(params);
if (mounted) {
callSnackBar(
context: context,
text: result.toString());
}
}),
],
),
),
),
const SizedBox(height: 16),
Text(
"Decrypt PDF",
style: Theme.of(context).textTheme.titleLarge,
),
Card(
margin: EdgeInsets.zero,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [