Привет, код ниже флаттера выполняет генерацию PDF-файла на видео, мне нужно добавить изображение головы в PDF, как я могу это сделать? Я должен убедиться, что изображение головы, полученное с URL, отображается. В настоящее время в PDF-файле показан текст, который мне нужно сделать, это создать изображение головы и таблицу для вставки данных. Как это сделать?
PdfViewer.dart
import 'package:flutter/material.dart';
import 'package:flutter_full_pdf_viewer/flutter_full_pdf_viewer.dart';
//Classe che si occupa di mostrare il PDF a video
class PdfPreviewScreen extends StatelessWidget {
//Path del pdf
PdfPreviewScreen({this.path});
final String path;
@override
Widget build(BuildContext context) {
return PDFViewerScaffold(
path: path,
);
}
}
GenerazionePDF.dart
//Variabile che rappresenta il cantiere
Cantiere c;
//Variabile che rappresenta il rapporto
Rapporto rp;
//Lista dei ristoranti presenti all'interno del cantiere che si sta visualizzando
List<Ristorante> listaRistoranti=new List<Ristorante>();
//Valori salvati corrispondenti al ristorante
String ragioneSociale;
int costo = 0;
int extraPreventivo = 0;
String data = DateFormat('dd-MM-yyyy').format(DateTime.now());
var firstColor = Color(0xff5b86e5), secondColor = Color(0xff36d1dc);
final dateFormat = DateFormat("EEEE, MMMM d, yyyy 'at' h:mma");
final timeFormat = DateFormat("h:mm a");
final format = DateFormat("dd-MM-yyyy");
DateTime date;
TimeOfDay time;
final pdf = pw.Document();
Future savePdf() async{
Directory documentDirectory = await getApplicationDocumentsDirectory();
String documentPath = documentDirectory.path;
File file = File("$documentPath/example.pdf");
file.writeAsBytesSync(pdf.save());
}
writeOnPdf(){
pdf.addPage(
pw.MultiPage(
pageFormat: PdfPageFormat.a5,
margin: pw.EdgeInsets.all(32),
build: (pw.Context context){
return <pw.Widget> [
/* pw.Header(
level: 0,
child: Text("Rapporto")
),*/
/*pw.Header(
level: 0,
child: Image.network('https://flutter-examples.com/wp-content/uploads/2019/09/blossom.jpg',width: 300, height: 200, fit: BoxFit.contain,)
),*/
pw.Paragraph(
text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Malesuada fames ac turpis egestas sed tempus urna. Quisque sagittis purus sit amet. A arcu cursus vitae congue mauris rhoncus aenean vel elit. Ipsum dolor sit amet consectetur adipiscing elit pellentesque. Viverra justo nec ultrices dui sapien eget mi proin sed."
),
pw.Paragraph(
text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Malesuada fames ac turpis egestas sed tempus urna. Quisque sagittis purus sit amet. A arcu cursus vitae congue mauris rhoncus aenean vel elit. Ipsum dolor sit amet consectetur adipiscing elit pellentesque. Viverra justo nec ultrices dui sapien eget mi proin sed."
),
pw.Header(
level: 1,
child: pw.Text("Second Heading")
),
pw.Paragraph(
text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Malesuada fames ac turpis egestas sed tempus urna. Quisque sagittis purus sit amet. A arcu cursus vitae congue mauris rhoncus aenean vel elit. Ipsum dolor sit amet consectetur adipiscing elit pellentesque. Viverra justo nec ultrices dui sapien eget mi proin sed."
),
pw.Paragraph(
text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Malesuada fames ac turpis egestas sed tempus urna. Quisque sagittis purus sit amet. A arcu cursus vitae congue mauris rhoncus aenean vel elit. Ipsum dolor sit amet consectetur adipiscing elit pellentesque. Viverra justo nec ultrices dui sapien eget mi proin sed."
),
pw.Paragraph(
text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Malesuada fames ac turpis egestas sed tempus urna. Quisque sagittis purus sit amet. A arcu cursus vitae congue mauris rhoncus aenean vel elit. Ipsum dolor sit amet consectetur adipiscing elit pellentesque. Viverra justo nec ultrices dui sapien eget mi proin sed."
),
];
},
)
);
}
//Funzione che si occupa dell'inserimento del ristorante all'interno del cantiere
Future<bool> generaRapporto(BuildContext context,Rapporto rptemp) async {
//Se checkInserimento è true sto inserendo un elemento in un cantierie e check inserimento è false inserisco l'elemento in un rapportino
//print("Funzione di rapportino");
String pathLink= await Rapporto.getTestata();
writeOnPdf();
await savePdf();
Directory documentDirectory = await getApplicationDocumentsDirectory();
String documentPath = documentDirectory.path;
String fullPath = "$documentPath/example.pdf";
Navigator.push(context, MaterialPageRoute(
builder: (context) => PdfPreviewScreen(path: fullPath,)
));
return true;
}
//Implementazione dell HexColor
Color hexToColor(String code) {
return new Color(int.parse(code.substring(1, 7), radix: 16) + 0xFF000000);
}
//Funzione che permette di salvare il valore tempaneo della data
DateTime setData(String datapassing) {
print("Sono in setData con valore: " + datapassing);
data = datapassing;
return DateTime.now();
}
//Classe che rappresenta la view del ristorante
class RapportoPage extends StatelessWidget {
//Costruttore per l'utilizzo nei cantieri
RapportoPage(this.rtemp);
//Oggetto che rappresenta i rapportini
final Rapporto rtemp;
//Creazione della lista dei ristoranti
Widget setUi(BuildContext context) {
rp=rtemp;
return Padding(
padding: EdgeInsets.all(40.0),
child: new Container(
child: new Center(
child: new Column(children: [
Wrap(spacing: 50, // spacing between each of the widgets below
children: <Widget>[
new RaisedButton(onPressed: () {
Navigator.pop(context);
})
]),
new Padding(padding: EdgeInsets.only(top: 40.0)),
new Text(
'Rapportini',
style: new TextStyle(color: hexToColor("#000000"), fontSize: 25.0),
),
//Inserimento del textfield della ragione sociale
new Padding(padding: EdgeInsets.only(top: 50.0)),
/*new TextFormField(
decoration: new InputDecoration(
labelText: "Inserisci Ragione Sociale",
fillColor: Colors.white,
border: new OutlineInputBorder(
borderRadius: new BorderRadius.circular(25.0),
borderSide: new BorderSide(),
),
//fillColor: Colors.green
),
validator: (val) {
if (val.length == 0) {
print("La ragione sociale non può essere vuota");
} else {
ragioneSociale = val;
}
},
onChanged: (val) {
ragioneSociale = val;
},
keyboardType: TextInputType.emailAddress,
style: new TextStyle(
fontFamily: "Poppins",
),
),
//Inserimento del Costo
new Padding(padding: EdgeInsets.only(top: 30.0)),
new TextFormField(
decoration: new InputDecoration(
labelText: "Inserisci il costo",
fillColor: Colors.white,
border: new OutlineInputBorder(
borderRadius: new BorderRadius.circular(25.0),
borderSide: new BorderSide(),
),
),
validator: (val) {
if (val.length == 0 && Verifica.verificaDouble(val.toString())) {
print("Attenzione campo costo non corretto");
}
},
onChanged: (val) {
costo = int.parse(val);
},
keyboardType: TextInputType.emailAddress,
style: new TextStyle(
fontFamily: "Poppins",
),
),
new Padding(padding: EdgeInsets.only(top: 30.0)),
//inserimento della data
new DateTimeField(
decoration: new InputDecoration(labelText: data),
format: format,
onShowPicker: (context, currentValue) {
return showDatePicker(
context: context,
firstDate: DateTime(1900),
initialDate: currentValue,
lastDate: DateTime(2100));
},
),
new Padding(padding: EdgeInsets.only(top: 40.0)),*/
//Bottone per l'inserimento
new NiceButton(
radius: 40,
padding: const EdgeInsets.all(15),
text: "Genera rapporto",
icon: Icons.picture_as_pdf,
gradientColors: [secondColor, firstColor],
onPressed: () {
generaRapporto(context,rtemp);
}
),
new Padding(padding: EdgeInsets.only(top: 40.0)),
// getListaRistoranti(),
]))));
}
//Widget che inserisce dello spazio fra altri widget
Widget getSpace() {
return SizedBox(height: 10);
}
//Widget che eseguo il build dello schermo
@override
Widget build(BuildContext context) {
return Container(
color: TemaApp.background,
child: Scaffold(
backgroundColor: Colors.transparent,
body: Stack(
children: <Widget>[
getSpace(),
getSpace(),
setUi(context),
SizedBox(
height: MediaQuery.of(context).padding.bottom,
),
//getListaRistoranti(),
],
),
),
);
}
}