fis_lib_report/lib/pages/components/vid_image.dart

import 'dart:io';

import 'package:fis_lib_report/pages/components/vid.dart';
import 'package:flutter/material.dart';
import 'package:vid/us/vid_us_image.dart';

class VidImageView {
  /// 创建一个从网络链接加载Vid图片的组件
  ///
  /// [url] vid图片链接
  ///
  /// 其他参数参考[Image]组件
  static Widget network(
    String url, {
    Key? key,
    double? width,
    double? height,
    Widget Function(BuildContext context)? loadingBuilder,
    ImageErrorWidgetBuilder? errorBuilder,
    Animation<double>? opacity,
    FilterQuality filterQuality = FilterQuality.low,
    BlendMode? colorBlendMode,
    BoxFit? fit,
    Alignment alignment = Alignment.center,
    bool isAntiAlias = false,
    bool gaplessPlayback = false,
    double scale = 1.0,
  }) {
    return FutureBuilder(
      future: VidFileHelper.getImageFromNetwork(url),
      builder: (context, snapshot) => _buildAsyncVidWidget(
        context,
        snapshot,
        loadingBuilder,
        errorBuilder,
        width: width,
        height: height,
        opacity: opacity,
        filterQuality: filterQuality,
        colorBlendMode: colorBlendMode,
        fit: fit,
        alignment: alignment,
        isAntiAlias: isAntiAlias,
        gaplessPlayback: gaplessPlayback,
        scale: scale,
      ),
    );
  }

  /// 创建一个从文件加载Vid图片的组件
  ///
  /// [file] 文件对象
  ///
  /// 其他参数参考[Image]组件
  static Widget file(
    File file, {
    Key? key,
    double? width,
    double? height,
    Widget Function(BuildContext context)? loadingBuilder,
    ImageErrorWidgetBuilder? errorBuilder,
    Animation<double>? opacity,
    FilterQuality filterQuality = FilterQuality.low,
    BlendMode? colorBlendMode,
    BoxFit? fit,
    Alignment alignment = Alignment.center,
    bool isAntiAlias = false,
    bool gaplessPlayback = false,
    double scale = 1.0,
  }) {
    return FutureBuilder(
      future: VidFileHelper.getImageFromFile(file),
      builder: (context, snapshot) => _buildAsyncVidWidget(
        context,
        snapshot,
        loadingBuilder,
        errorBuilder,
        width: width,
        height: height,
        opacity: opacity,
        filterQuality: filterQuality,
        colorBlendMode: colorBlendMode,
        fit: fit,
        alignment: alignment,
        isAntiAlias: isAntiAlias,
        gaplessPlayback: gaplessPlayback,
        scale: scale,
      ),
    );
  }

  static Widget _buildAsyncVidWidget(
    BuildContext context,
    AsyncSnapshot<Object?> snapshot,
    Widget Function(BuildContext context)? loadingBuilder,
    ImageErrorWidgetBuilder? errorBuilder, {
    double? width,
    double? height,
    Animation<double>? opacity,
    FilterQuality filterQuality = FilterQuality.low,
    BlendMode? colorBlendMode,
    BoxFit? fit,
    Alignment alignment = Alignment.center,
    bool isAntiAlias = false,
    bool gaplessPlayback = false,
    double scale = 1.0,
  }) {
    if (snapshot.connectionState == ConnectionState.done) {
      if (snapshot.hasData) {
        final frame = snapshot.data as VidUsImage;
        return Image.memory(
          frame.imageData,
          width: width,
          height: height,
          opacity: opacity,
          filterQuality: filterQuality,
          colorBlendMode: colorBlendMode,
          fit: fit,
          alignment: alignment,
          isAntiAlias: isAntiAlias,
          gaplessPlayback: gaplessPlayback,
          scale: scale,
        );
      } else {
        final exWidget = errorBuilder != null
            ? errorBuilder(
                context,
                Exception("Vid Image load fail."),
                snapshot.stackTrace,
              )
            : ErrorWidget("Error");
        return Container(
          alignment: alignment,
          width: width,
          height: height,
          child: exWidget,
        );
      }
    } else {
      final loading = loadingBuilder != null
          ? loadingBuilder(context)
          : const CircularProgressIndicator();
      return Container(
        alignment: alignment,
        width: width,
        height: height,
        child: loading,
      );
    }
  }
}