kmpdfkit_demo/lib/widgets/options/convert_image_options_widget.dart

import 'package:ConversionFlutterDemo/models/convert_contain_options_bean.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';

import '../../states/convert_options_provider.dart';

class ConvertImageOptionsWidget extends StatefulWidget {
  const ConvertImageOptionsWidget({Key? key}) : super(key: key);

  @override
  State<ConvertImageOptionsWidget> createState() =>
      _ConvertImageOptionsWidgetState();
}

class _ConvertImageOptionsWidgetState extends State<ConvertImageOptionsWidget> {
  @override
  Widget build(BuildContext context) {
    bool containAnnotations = context.select<ConvertOptionsProvider, bool>(
        (value) => value.imageOptions.containAnnotations);

    return Padding(
      padding: EdgeInsets.all(8),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              const Text('ContainAnnotations'),
              Switch(
                  value: containAnnotations,
                  onChanged: (value) {
                    context
                        .read<ConvertOptionsProvider>()
                        .changeImageOptions(containAnnotations: value);
                  })
            ],
          ),
          Text('ImageDpi:'),
          TextFormField(
            keyboardType: TextInputType.number,
            textInputAction: TextInputAction.done,
            initialValue: "300",
            maxLength: 1000,
            inputFormatters:
            [
              FilteringTextInputFormatter.allow(RegExp(r'^\d{1,4}(\.\d{0,2})?')),
              FilteringTextInputFormatter.deny(RegExp(r'[\\,|\\.]')),
              LengthLimitingTextInputFormatter(4)
            ],
            decoration: InputDecoration(labelText: '请输入范围在1~1000内的整数'),
            onChanged: (value){
              context
                  .read<ConvertOptionsProvider>()
                  .changeImageOptions(imageDpi: int.parse(value));
            },
          ),
          imagePageOptions((value) {
            context
                .read<ConvertOptionsProvider>()
                .changeImageOptions(imagePageOptions: value);
          })
        ],
      ),
    );
  }



  Widget imagePageOptions(ValueChanged<ImagePageOptions> onChanged) {
    ImagePageOptions imagePageOptions =
    context.select<ConvertOptionsProvider, ImagePageOptions>(
            (value) => value.imageOptions.imagePageOptions);
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text('Page Options:'),
        _imagePageOptionsItem(
            imagePageOptions, ImagePageOptions.JPEG, onChanged),
        _imagePageOptionsItem(
            imagePageOptions, ImagePageOptions.PNG, onChanged),
      ],
    );
  }

  Widget _imagePageOptionsItem(ImagePageOptions currentOptions,
      ImagePageOptions options, ValueChanged<ImagePageOptions> onChanged) {
    return CheckboxListTile(
        controlAffinity: ListTileControlAffinity.leading,
        title: Text(options.name),
        value: currentOptions == options,
        onChanged: (value) {
          onChanged(options);
        });
  }
}