syncfusion_flutter_pdf 28.1.36 syncfusion_flutter_pdf: ^28.1.36 copied to clipboard
The Flutter PDF is a library written natively in Dart for creating, reading, editing, and securing PDF files in Android, iOS, and web platforms.
import 'package:flutter/material.dart';
// ignore: depend_on_referenced_packages
import 'package:intl/intl.dart';
import 'package:syncfusion_flutter_pdf/pdf.dart';
//Local imports
import 'save_file_mobile.dart' if (dart.library.html) 'save_file_web.dart';
void main() {
runApp(const CreatePdfWidget());
}
/// Represents the PDF widget class.
class CreatePdfWidget extends StatelessWidget {
const CreatePdfWidget({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(
home: CreatePdfStatefulWidget(),
);
}
}
/// Represents the PDF stateful widget class.
class CreatePdfStatefulWidget extends StatefulWidget {
/// Initalize the instance of the [CreatePdfStatefulWidget] class.
const CreatePdfStatefulWidget({Key? key}) : super(key: key);
@override
_CreatePdfState createState() => _CreatePdfState();
}
class _CreatePdfState extends State<CreatePdfStatefulWidget> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Create PDF document'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
TextButton(
style: TextButton.styleFrom(
foregroundColor: Colors.white,
backgroundColor: Colors.lightBlue,
disabledForegroundColor: Colors.grey,
),
onPressed: generateInvoice,
child: const Text('Generate PDF'),
)
],
),
),
);
}
Future<void> generateInvoice() async {
//Create a PDF document.
final PdfDocument document = PdfDocument();
//Add page to the PDF
final PdfPage page = document.pages.add();
//Get page client size
final Size pageSize = page.getClientSize();
//Draw rectangle
page.graphics.drawRectangle(
bounds: Rect.fromLTWH(0, 0, pageSize.width, pageSize.height),
pen: PdfPen(PdfColor(142, 170, 219)));
//Generate PDF grid.
final PdfGrid grid = getGrid();
//Draw the header section by creating text element
final PdfLayoutResult result = drawHeader(page, pageSize, grid);
//Draw grid
drawGrid(page, grid, result);
//Add invoice footer
drawFooter(page, pageSize);
//Save the PDF document
final List<int> bytes = document.saveSync();
//Dispose the document.
document.dispose();
//Save and launch the file.
await saveAndLaunchFile(bytes, 'Invoice.pdf');
}
//Draws the invoice header
PdfLayoutResult drawHeader(PdfPage page, Size pageSize, PdfGrid grid) {
//Draw rectangle
page.graphics.drawRectangle(
brush: PdfSolidBrush(PdfColor(91, 126, 215)),
bounds: Rect.fromLTWH(0, 0, pageSize.width - 115, 90));
//Draw string
page.graphics.drawString(
'INVOICE', PdfStandardFont(PdfFontFamily.helvetica, 30),
brush: PdfBrushes.white,
bounds: Rect.fromLTWH(25, 0, pageSize.width - 115, 90),
format: PdfStringFormat(lineAlignment: PdfVerticalAlignment.middle));
page.graphics.drawRectangle(
bounds: Rect.fromLTWH(400, 0, pageSize.width - 400, 90),
brush: PdfSolidBrush(PdfColor(65, 104, 205)));
page.graphics.drawString(r'$' + getTotalAmount(grid).toString(),
PdfStandardFont(PdfFontFamily.helvetica, 18),
bounds: Rect.fromLTWH(400, 0, pageSize.width - 400, 100),
brush: PdfBrushes.white,
format: PdfStringFormat(
alignment: PdfTextAlignment.center,
lineAlignment: PdfVerticalAlignment.middle));
final PdfFont contentFont = PdfStandardFont(PdfFontFamily.helvetica, 9);
//Draw string
page.graphics.drawString('Amount', contentFont,
brush: PdfBrushes.white,
bounds: Rect.fromLTWH(400, 0, pageSize.width - 400, 33),
format: PdfStringFormat(
alignment: PdfTextAlignment.center,
lineAlignment: PdfVerticalAlignment.bottom));
//Create data foramt and convert it to text.
final DateFormat format = DateFormat.yMMMMd('en_US');
final String invoiceNumber =
'Invoice Number: 2058557939\r\n\r\nDate: ${format.format(DateTime.now())}';
final Size contentSize = contentFont.measureString(invoiceNumber);
// ignore: leading_newlines_in_multiline_strings
const String address = '''Bill To: \r\n\r\nAbraham Swearegin,
\r\n\r\nUnited States, California, San Mateo,
\r\n\r\n9920 BridgePointe Parkway, \r\n\r\n9365550136''';
PdfTextElement(text: invoiceNumber, font: contentFont).draw(
page: page,
bounds: Rect.fromLTWH(pageSize.width - (contentSize.width + 30), 120,
contentSize.width + 30, pageSize.height - 120));
return PdfTextElement(text: address, font: contentFont).draw(
page: page,
bounds: Rect.fromLTWH(30, 120,
pageSize.width - (contentSize.width + 30), pageSize.height - 120))!;
}
//Draws the grid
void drawGrid(PdfPage page, PdfGrid grid, PdfLayoutResult result) {
Rect? totalPriceCellBounds;
Rect? quantityCellBounds;
//Invoke the beginCellLayout event.
grid.beginCellLayout = (Object sender, PdfGridBeginCellLayoutArgs args) {
final PdfGrid grid = sender as PdfGrid;
if (args.cellIndex == grid.columns.count - 1) {
totalPriceCellBounds = args.bounds;
} else if (args.cellIndex == grid.columns.count - 2) {
quantityCellBounds = args.bounds;
}
};
//Draw the PDF grid and get the result.
result = grid.draw(
page: page, bounds: Rect.fromLTWH(0, result.bounds.bottom + 40, 0, 0))!;
//Draw grand total.
page.graphics.drawString('Grand Total',
PdfStandardFont(PdfFontFamily.helvetica, 9, style: PdfFontStyle.bold),
bounds: Rect.fromLTWH(
quantityCellBounds!.left,
result.bounds.bottom + 10,
quantityCellBounds!.width,
quantityCellBounds!.height));
page.graphics.drawString(getTotalAmount(grid).toString(),
PdfStandardFont(PdfFontFamily.helvetica, 9, style: PdfFontStyle.bold),
bounds: Rect.fromLTWH(
totalPriceCellBounds!.left,
result.bounds.bottom + 10,
totalPriceCellBounds!.width,
totalPriceCellBounds!.height));
}
//Draw the invoice footer data.
void drawFooter(PdfPage page, Size pageSize) {
final PdfPen linePen =
PdfPen(PdfColor(142, 170, 219), dashStyle: PdfDashStyle.custom);
linePen.dashPattern = <double>[3, 3];
//Draw line
page.graphics.drawLine(linePen, Offset(0, pageSize.height - 100),
Offset(pageSize.width, pageSize.height - 100));
const String footerContent =
// ignore: leading_newlines_in_multiline_strings
'''800 Interchange Blvd.\r\n\r\nSuite 2501, Austin,
TX 78721\r\n\r\nAny Questions? support@adventure-works.com''';
//Added 30 as a margin for the layout
page.graphics.drawString(
footerContent, PdfStandardFont(PdfFontFamily.helvetica, 9),
format: PdfStringFormat(alignment: PdfTextAlignment.right),
bounds: Rect.fromLTWH(pageSize.width - 30, pageSize.height - 70, 0, 0));
}
//Create PDF grid and return
PdfGrid getGrid() {
//Create a PDF grid
final PdfGrid grid = PdfGrid();
//Secify the columns count to the grid.
grid.columns.add(count: 5);
//Create the header row of the grid.
final PdfGridRow headerRow = grid.headers.add(1)[0];
//Set style
headerRow.style.backgroundBrush = PdfSolidBrush(PdfColor(68, 114, 196));
headerRow.style.textBrush = PdfBrushes.white;
headerRow.cells[0].value = 'Product Id';
headerRow.cells[0].stringFormat.alignment = PdfTextAlignment.center;
headerRow.cells[1].value = 'Product Name';
headerRow.cells[2].value = 'Price';
headerRow.cells[3].value = 'Quantity';
headerRow.cells[4].value = 'Total';
//Add rows
addProducts('CA-1098', 'AWC Logo Cap', 8.99, 2, 17.98, grid);
addProducts('LJ-0192', 'Long-Sleeve Logo Jersey,M', 49.99, 3, 149.97, grid);
addProducts('So-B909-M', 'Mountain Bike Socks,M', 9.5, 2, 19, grid);
addProducts('LJ-0192', 'Long-Sleeve Logo Jersey,M', 49.99, 4, 199.96, grid);
addProducts('FK-5136', 'ML Fork', 175.49, 6, 1052.94, grid);
addProducts('HL-U509', 'Sports-100 Helmet,Black', 34.99, 1, 34.99, grid);
//Apply the table built-in style
grid.applyBuiltInStyle(PdfGridBuiltInStyle.listTable4Accent5);
//Set gird columns width
grid.columns[1].width = 200;
for (int i = 0; i < headerRow.cells.count; i++) {
headerRow.cells[i].style.cellPadding =
PdfPaddings(bottom: 5, left: 5, right: 5, top: 5);
}
for (int i = 0; i < grid.rows.count; i++) {
final PdfGridRow row = grid.rows[i];
for (int j = 0; j < row.cells.count; j++) {
final PdfGridCell cell = row.cells[j];
if (j == 0) {
cell.stringFormat.alignment = PdfTextAlignment.center;
}
cell.style.cellPadding =
PdfPaddings(bottom: 5, left: 5, right: 5, top: 5);
}
}
return grid;
}
//Create and row for the grid.
void addProducts(String productId, String productName, double price,
int quantity, double total, PdfGrid grid) {
final PdfGridRow row = grid.rows.add();
row.cells[0].value = productId;
row.cells[1].value = productName;
row.cells[2].value = price.toString();
row.cells[3].value = quantity.toString();
row.cells[4].value = total.toString();
}
//Get the total amount.
double getTotalAmount(PdfGrid grid) {
double total = 0;
for (int i = 0; i < grid.rows.count; i++) {
final String value =
grid.rows[i].cells[grid.columns.count - 1].value as String;
total += double.parse(value);
}
return total;
}
}