封装提示词翻译组件

一、本章诉求

由于前期设计的提示词均是英文输入，后期用户要求增加中文提示词输入，这个需求更改有两个方法，一个是修改comfyui工作流，另一个是修改前端，在前端将用户输入的中文翻译成英文，再推送到工作流中运行。
考虑到工作流功能较多，修改工作流也较为麻烦，本章选择修改前端的方式，封装一个前端vue翻译组件，实现提示词翻译功能的复用。

二、开发翻译接口

argos-translate 是一款基于OpenNMT（神经网络机器翻译框架）的离线翻译库，不依赖第三方翻译接口，支持翻译包括中文在内的 30 多种语言

pip install argostranslate

# add by ywz 20240925 argostranslate翻译 用于提示词翻译
import argostranslate.package
import argostranslate.translate

def argos_translate(query: str) -> str:
    from_code = "zh"
    to_code = "en"
    argostranslate.package.update_package_index()
    available_packages = argostranslate.package.get_available_packages()
    package_to_install = next(
        filter(
            lambda x: x.from_code == from_code and x.to_code == to_code, available_packages
        )
    )
    argostranslate.package.install_from_path(package_to_install.download())

    translatedText = argostranslate.translate.translate(query, from_code, to_code)
                                    
    return translatedText
from utils.argostranslate import argos_translate

@app.get("/translate")
def translate(query: str = Query()):
    prompt = argos_translate(query)
    return prompt

三、封装前端翻译组件

<template>
  <div>
    <p>
      <span style="font-size: medium; color: #333333">{{ cardTitle }}</span>
      <span style="font-size: smaller; color: grey; margin-left: 5px">可选</span>
    </p>
    <a-textarea
      v-model="inputText"
      :placeholder="placeholder"
      :auto-size="{ minRows: 4, maxRows: 5 }"
      />
    <p v-if="translationResult">翻译结果: {{ translationResult }}</p>
  </div>
</template>

<script>
  export default {
    props: {
      cardTitle: {
        type: String,
        default: '',
      },
      promptFlag: {
        type: String,
        default: '',
      },
      placeholderText: {
        type: String,
        default: '',
      },
    },
    data() {
      return {
        inputText: '',
        promptFlagText: this.promptFlag,
        placeholder: this.placeholderText,
        translationResult: ''
      };
    },
    methods: {
      translate() {
        return new Promise((resolve, reject) => {
          fetch(`/seg/translate?query=${encodeURIComponent(this.inputText)}`, {
            method: "GET",
          })
            .then((response) => {
              if (!response.ok) {
                throw new Error('网络响应不正确');
              }
              return response.json();
            })
            .then((data) => {
              console.log("Success:", data);
              this.translationResult = data
              if (this.promptFlagText === '正向') {
                resolve(data); // 返回结果
              } else {
                if (data != '') {
                  let negativeInitPrompt = ",(worst quality:2.0),poorly drawn,bad anatomy,(bad proportions:1.3),ugly,disgusting,amputation,bugly,geometry,bad_prompt,multiple limbs,(bad hand:2.0),extra limb,(deformed fingers:2.0),mutated hands and fingers,disconnected limbs, geometry, bad_prompt,(missing fingers), (interlocked fingers:1.2), (extra digit and hands and fingers and legs and arms:1.4),(long fingers:1.2),(bad-artist-anime),(shinny skin, reflections on the skin, skin reflections:1.5)";
                  resolve(data + negativeInitPrompt);
                } else {
                  let negativeInitPrompt = "(worst quality:2.0),poorly drawn,bad anatomy,(bad proportions:1.3),ugly,disgusting,amputation,bugly,geometry,bad_prompt,multiple limbs,(bad hand:2.0),extra limb,(deformed fingers:2.0),mutated hands and fingers,disconnected limbs, geometry, bad_prompt,(missing fingers), (interlocked fingers:1.2), (extra digit and hands and fingers and legs and arms:1.4),(long fingers:1.2),(bad-artist-anime),(shinny skin, reflections on the skin, skin reflections:1.5)";
                  resolve(negativeInitPrompt);
                }
              }
            })
            .catch((error) => {
              console.error("Error:", error);
              alert("'翻译出错: ' + error.message")
              reject('翻译出错: ' + error.message);
            });
        });
      },
    },
  };
</script>

<style scoped>
  * {
    margin: 0;
  }
</style>

//html
<div style="padding-left: 20px; padding-right: 20px;margin-top: 20px">
          <TranslationInput
            ref="positiveTranslationInput"
            :card-title="'正向提示词'"
            :promptFlag="'正向'"
            :placeholderText="'请输入正向提示词(中文)'"
            @translationComplete="handlePositiveTranslation"
          />
        </div>

        <div style="padding-left: 20px; padding-right: 20px;margin-top: 20px">
          <TranslationInput
            ref="negativeTranslationInput"
            :card-title="'负向提示词'"
            :promptFlag="'负向'"
            :placeholderText="'请输入负向提示词(中文)'"
            @translationComplete="handleNegativeTranslation"
          />
        </div>


//script
import TranslationInput from './TranslationInput.vue';
    components: {TranslationInput},

    confirmTranslation() {
      this.$refs.positiveTranslationInput.translate()
        .then(result => {
          this.handlePositiveTranslation(result);
          this.confirmNegativeTranslation()
        })
    },
    confirmNegativeTranslation() {
      this.$refs.negativeTranslationInput.translate()
        .then(result => {
          this.handleNegativeTranslation(result);
          this.generate()
        })
    },

    handlePositiveTranslation(result) {
      this.positive = result;
    },
    handleNegativeTranslation(result) {
      this.negative = result;
    },