flutter_package / dart_pdf

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David PHAM-VAN
d0cae426 1 parent 4883c6e1

Use default margin in example

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Showing 4 changed files with 104 additions and 14 deletions
@@ -69,6 +69,15 @@ class PdfPageFormat { @@ -69,6 +69,15 @@ class PdfPageFormat {
69 PdfPageFormat get portrait => 69 PdfPageFormat get portrait =>
70 height >= width ? this : copyWith(width: height, height: width); 70 height >= width ? this : copyWith(width: height, height: width);
71 71
  72 + PdfPageFormat applyMargin(
  73 + {double left, double top, double right, double bottom}) =>
  74 + copyWith(
  75 + marginLeft: math.max(marginLeft, left),
  76 + marginTop: math.max(marginTop, top),
  77 + marginRight: math.max(marginRight, right),
  78 + marginBottom: math.max(marginBottom, bottom),
  79 + );
  80 +
72 @override 81 @override
73 String toString() { 82 String toString() {
74 return "${width}x$height"; 83 return "${width}x$height";
@@ -3,21 +3,90 @@ import 'dart:async'; @@ -3,21 +3,90 @@ import 'dart:async';
3 3
4 import 'package:pdf/pdf.dart'; 4 import 'package:pdf/pdf.dart';
5 5
6 -Future<PdfDocument> generateDocument() async { 6 +Future<PdfDocument> generateDocument(PdfPageFormat format) async {
7 final pdf = PdfDocument(deflate: zlib.encode); 7 final pdf = PdfDocument(deflate: zlib.encode);
8 - final page = PdfPage(pdf, pageFormat: PdfPageFormat.a4); 8 + final page = PdfPage(pdf,
  9 + pageFormat: format.applyMargin(
  10 + left: 2.0 * PdfPageFormat.cm,
  11 + top: 2.0 * PdfPageFormat.cm,
  12 + right: 2.0 * PdfPageFormat.cm,
  13 + bottom: 2.0 * PdfPageFormat.cm));
9 final g = page.getGraphics(); 14 final g = page.getGraphics();
10 final font = PdfFont.helvetica(pdf); 15 final font = PdfFont.helvetica(pdf);
11 - final top = page.pageFormat.height; 16 + final top = page.pageFormat.height - page.pageFormat.marginTop;
  17 +
  18 + g.setColor(PdfColor.orange);
  19 + g.drawRect(
  20 + page.pageFormat.marginLeft,
  21 + page.pageFormat.marginBottom,
  22 + page.pageFormat.width -
  23 + page.pageFormat.marginRight -
  24 + page.pageFormat.marginLeft,
  25 + page.pageFormat.height -
  26 + page.pageFormat.marginTop -
  27 + page.pageFormat.marginBottom);
  28 + g.strokePath();
12 29
13 g.setColor(PdfColor(0.0, 1.0, 1.0)); 30 g.setColor(PdfColor(0.0, 1.0, 1.0));
14 - g.drawRect(50.0 * PdfPageFormat.mm, top - 80.0 * PdfPageFormat.mm,  
15 - 100.0 * PdfPageFormat.mm, 50.0 * PdfPageFormat.mm); 31 + g.drawRRect(
  32 + 50.0 * PdfPageFormat.mm,
  33 + top - 80.0 * PdfPageFormat.mm,
  34 + 100.0 * PdfPageFormat.mm,
  35 + 50.0 * PdfPageFormat.mm,
  36 + 20.0,
  37 + 20.0,
  38 + );
16 g.fillPath(); 39 g.fillPath();
17 40
18 g.setColor(PdfColor(0.3, 0.3, 0.3)); 41 g.setColor(PdfColor(0.3, 0.3, 0.3));
19 - g.drawString(font, 12.0, "Hello World!", 10.0 * PdfPageFormat.mm, 42 + g.drawString(
  43 + font,
  44 + 12.0,
  45 + "Hello World!",
  46 + page.pageFormat.marginLeft + 10.0 * PdfPageFormat.mm,
20 top - 10.0 * PdfPageFormat.mm); 47 top - 10.0 * PdfPageFormat.mm);
21 48
  49 + {
  50 + final page = PdfPage(pdf,
  51 + pageFormat: format.applyMargin(
  52 + left: 2.0 * PdfPageFormat.cm,
  53 + top: 2.0 * PdfPageFormat.cm,
  54 + right: 2.0 * PdfPageFormat.cm,
  55 + bottom: 2.0 * PdfPageFormat.cm));
  56 + final g = page.getGraphics();
  57 + final font = PdfFont.helvetica(pdf);
  58 + final top = page.pageFormat.height - page.pageFormat.marginTop;
  59 +
  60 + g.setColor(PdfColor.orange);
  61 + g.drawRect(
  62 + page.pageFormat.marginLeft,
  63 + page.pageFormat.marginBottom,
  64 + page.pageFormat.width -
  65 + page.pageFormat.marginRight -
  66 + page.pageFormat.marginLeft,
  67 + page.pageFormat.height -
  68 + page.pageFormat.marginTop -
  69 + page.pageFormat.marginBottom);
  70 + g.strokePath();
  71 +
  72 + g.setColor(PdfColor(0.0, 1.0, 1.0));
  73 + g.drawRRect(
  74 + 50.0 * PdfPageFormat.mm,
  75 + top - 80.0 * PdfPageFormat.mm,
  76 + 100.0 * PdfPageFormat.mm,
  77 + 50.0 * PdfPageFormat.mm,
  78 + 20.0,
  79 + 20.0,
  80 + );
  81 + g.fillPath();
  82 +
  83 + g.setColor(PdfColor(0.3, 0.3, 0.3));
  84 + g.drawString(
  85 + font,
  86 + 12.0,
  87 + "Hello World!",
  88 + page.pageFormat.marginLeft + 10.0 * PdfPageFormat.mm,
  89 + top - 10.0 * PdfPageFormat.mm);
  90 + }
22 return pdf; 91 return pdf;
23 } 92 }
@@ -25,13 +25,13 @@ class MyAppState extends State<MyApp> { @@ -25,13 +25,13 @@ class MyAppState extends State<MyApp> {
25 25
26 void _printPdf() async { 26 void _printPdf() async {
27 print("Print ..."); 27 print("Print ...");
28 - final pdf = await generateDocument(); 28 + final pdf = await generateDocument(PdfPageFormat.a4);
29 Printing.printPdf(document: pdf); 29 Printing.printPdf(document: pdf);
30 } 30 }
31 31
32 void _sharePdf() async { 32 void _sharePdf() async {
33 print("Share ..."); 33 print("Share ...");
34 - final pdf = await generateDocument(); 34 + final pdf = await generateDocument(PdfPageFormat.a4);
35 35
36 // Calculate the widget center for iPad sharing popup position 36 // Calculate the widget center for iPad sharing popup position
37 final RenderBox referenceBox = 37 final RenderBox referenceBox =
@@ -46,7 +46,6 @@ class MyAppState extends State<MyApp> { @@ -46,7 +46,6 @@ class MyAppState extends State<MyApp> {
46 } 46 }
47 47
48 Future<void> _printScreen() async { 48 Future<void> _printScreen() async {
49 - const margin = 10.0 * PdfPageFormat.mm;  
50 final pdf = PdfDocument(deflate: zlib.encode); 49 final pdf = PdfDocument(deflate: zlib.encode);
51 final page = PdfPage(pdf, pageFormat: PdfPageFormat.a4); 50 final page = PdfPage(pdf, pageFormat: PdfPageFormat.a4);
52 final g = page.getGraphics(); 51 final g = page.getGraphics();
@@ -58,8 +57,12 @@ class MyAppState extends State<MyApp> { @@ -58,8 +57,12 @@ class MyAppState extends State<MyApp> {
58 print("Print Screen ${im.width}x${im.height} ..."); 57 print("Print Screen ${im.width}x${im.height} ...");
59 58
60 // Center the image 59 // Center the image
61 - final w = page.pageFormat.width - margin * 2.0;  
62 - final h = page.pageFormat.height - margin * 2.0; 60 + final w = page.pageFormat.width -
  61 + page.pageFormat.marginLeft -
  62 + page.pageFormat.marginRight;
  63 + final h = page.pageFormat.height -
  64 + page.pageFormat.marginTop -
  65 + page.pageFormat.marginBottom;
63 double iw, ih; 66 double iw, ih;
64 if (im.width.toDouble() / im.height.toDouble() < 1.0) { 67 if (im.width.toDouble() / im.height.toDouble() < 1.0) {
65 ih = h; 68 ih = h;
@@ -71,8 +74,15 @@ class MyAppState extends State<MyApp> { @@ -71,8 +74,15 @@ class MyAppState extends State<MyApp> {
71 74
72 PdfImage image = PdfImage(pdf, 75 PdfImage image = PdfImage(pdf,
73 image: bytes.buffer.asUint8List(), width: im.width, height: im.height); 76 image: bytes.buffer.asUint8List(), width: im.width, height: im.height);
74 - g.drawImage(image, margin + (w - iw) / 2.0,  
75 - page.pageFormat.height - margin - ih - (h - ih) / 2.0, iw, ih); 77 + g.drawImage(
  78 + image,
  79 + page.pageFormat.marginLeft + (w - iw) / 2.0,
  80 + page.pageFormat.height -
  81 + page.pageFormat.marginTop -
  82 + ih -
  83 + (h - ih) / 2.0,
  84 + iw,
  85 + ih);
76 86
77 Printing.printPdf(document: pdf); 87 Printing.printPdf(document: pdf);
78 } 88 }
@@ -2,11 +2,13 @@ import 'dart:io'; @@ -2,11 +2,13 @@ import 'dart:io';
2 2
3 import 'package:flutter_test/flutter_test.dart'; 3 import 'package:flutter_test/flutter_test.dart';
4 4
  5 +import 'package:pdf/pdf.dart';
  6 +
5 import 'package:printing_example/document.dart'; 7 import 'package:printing_example/document.dart';
6 8
7 void main() { 9 void main() {
8 testWidgets('Generate the Pdf document', (WidgetTester tester) async { 10 testWidgets('Generate the Pdf document', (WidgetTester tester) async {
9 - final pdf = await generateDocument(); 11 + final pdf = await generateDocument(PdfPageFormat.a4);
10 var file = File('document.pdf'); 12 var file = File('document.pdf');
11 file.writeAsBytesSync(pdf.save()); 13 file.writeAsBytesSync(pdf.save());
12 }); 14 });