Is it possible to create image from Text in a flutter?-CodePudding

I am working on a app where user can logged into a app and can enter a text in a textformfileld it and can also apply different fontstyle and font family and generate a image from it.

is it possible ?

Any help would be highly appreciated

CodePudding user response：

You need to send your text through External API like this https://rapidapi.com/seikan/api/img4me-text-to-image-service/ after that you need to download the image and show it to the user

CodePudding user response：

Here is an example for you. You can test it in an app.
It draw the text to a canvas then save canvas as an image. So you can apply any font style to ParagraphBuilder.

I hope it helps

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  TextEditingController controller = TextEditingController();
  Image? img;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
            TextFormField(
              controller: controller,
            ),
            ElevatedButton(onPressed: _onPressedButton, child: const Text("Create Image")),
            Container(width: 200, height: 200, color: Colors.blueGrey, child: img ?? Container())
          ],
        ),
      ),
    );
  }

  void getCanvasImage(String str) async {
    var builder = ParagraphBuilder(ParagraphStyle(fontStyle: FontStyle.normal));
    builder.addText(str);
    Paragraph paragraph = builder.build();
    paragraph.layout(const ParagraphConstraints(width: 100));

    final recorder = PictureRecorder();
    var newCanvas = Canvas(recorder);

    newCanvas.drawParagraph(paragraph, Offset.zero);

    final picture = recorder.endRecording();
    var res = await picture.toImage(100, 100);
    ByteData? data = await res.toByteData(format: ImageByteFormat.png);

    if (data != null) {
      img = Image.memory(Uint8List.view(data.buffer));
    }

    setState(() {});
  }

  void _onPressedButton() {
    getCanvasImage(controller.text);
  }
}