pdf 1.2.0 pdf: ^1.2.0 copied to clipboard
A pdf producer for Dart. It can create pdf files for both web or flutter.
Pdf creation library for dart / flutter #
This is a low-level Pdf creation library. It can create a full multi-pages document with graphics, images and text using TrueType fonts.
Use
printing
package https://pub.dartlang.org/packages/printing for full flutter print and share operation.
The coordinate system is using the internal Pdf system:
- (0.0, 0.0) is bottom-left
- 1.0 is defined as 1 / 72.0 inch
- you can use the constants for centimeters, milimeters and inch defined in PdfPageFormat
Example:
final pdf = PdfDocument();
final page = PdfPage(pdf, pageFormat: PdfPageFormat.letter);
final g = page.getGraphics();
final font = PdfFont(pdf);
g.setColor(PdfColor(0.0, 1.0, 1.0));
g.drawRect(50.0, 30.0, 100.0, 50.0);
g.fillPath();
g.setColor(PdfColor(0.3, 0.3, 0.3));
g.drawString(font, 12.0, "Hello World!", 5.0 * PdfPageFormat.mm, 300.0);
var file = File('file.pdf');
file.writeAsBytesSync(pdf.save());
To load an image it is possible to use the dart library image:
Image image = decodeImage(Io.File('test.webp').readAsBytesSync());
PdfImage image = PdfImage(
pdf,
image: img.data.buffer.asUint8List(),
width: img.width,
height: img.height);
g.drawImage(image, 100.0, 100.0, 80.0);
To use a TrueType font:
PdfTtfFont ttf = PdfTtfFont(
pdf,
(File("open-sans.ttf").readAsBytesSync() as Uint8List).buffer.asByteData());
g.setColor(PdfColor(0.3, 0.3, 0.3));
g.drawString(ttf, 20.0, "Dart is awesome", 50.0, 30.0);
To save the image on Flutter, use the path_provider library:
Directory tempDir = await getTemporaryDirectory();
String tempPath = tempDir.path;
var file = File("$tempPath/file.pdf");
await file.writeAsBytes(pdf.save());