JustHTML/Tools/ImageResizer.html at main · X-starRelight/JustHTML · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>图片尺寸调整 - JustHTML 只需网页</title>
  <script>
/**
 * 动态加载（强制去除缓存） CSS 的函数
 * @param {string} src - 要加载的 CSS 的 src 链接
 * @returns {Promise} 返回一个 Promise 对象，用于处理异步加载
 */
function loadStyle(src) {
  return new Promise((resolve, reject) => {
    const link = document.createElement('link');
    link.rel = 'stylesheet';
    link.href = src + '?v=' + new Date().getTime(); // 使用时间戳避免缓存
    link.async = true;
    link.onload = resolve;
    link.onerror = reject;
    document.head.appendChild(link);
  });
}

/**
 * 动态加载（强制去除缓存） JS 的函数
 * @param {string} src - 要加载的 JS 的 src 链接
 * @returns {Promise} 返回一个 Promise 对象，用于处理异步加载
 */
function loadScript(src) {
  return new Promise((resolve, reject) => {
    const script = document.createElement('script');
    script.src = src + '?v=' + new Date().getTime(); // 使用时间戳避免缓存
    script.async = true;
    script.onload = resolve;
    script.onerror = reject;
    document.head.appendChild(script);
  });
}
</script>

  <script>
    loadStyle('../assets/style.css')
    let scriptArray = [
      "../assets/AddHeader_Tools.js",
      "../assets/AddFooter.js",
      "../assets/AddIco.js",
      "../assets/AutoRun.js",
    ]

    scriptArray.forEach(script => {
      loadScript(script);
    });
  </script>

  <script src="../package/Vue/code/vue.global.prod.js"></script>
  <script type="module" src="../package/Sober/code/main.js"></script>

  <style>
    .resizer-controls {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 15px;
      margin: 15px 0;
    }

    .control-item {
      display: flex;
      flex-direction: column;
    }

    .control-item label {
      margin-bottom: 5px;
      color: var(--accent-color);
    }

    .control-item input, .control-item select {
      padding: 8px;
    }

    .image-preview-container {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin: 20px 0;
    }

    .image-preview {
      flex: 1;
      min-width: 300px;
    }

    .image-preview img {
      max-width: 100%;
      max-height: 400px;
      display: block;
      margin: 0 auto;
    }

    .controls {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 15px 0;
    }

    .info-box {
      background-color: var(--bg-tertiary);
      padding: 10px;
      border-radius: var(--border-radius);
      margin: 10px 0;
    }
  </style>
</head>
<body>
  <div id="app">
    <div class="container">
      <a href="../index.html" class="back-link">← 返回首页</a>

      <div class="tool-section">
        <h2>图片尺寸调整</h2>
        <p>调整图片尺寸大小</p>

        <div class="info-box">
          <p><strong>使用说明：</strong></p>
          <p>• 上传图片后，设置新的宽度和高度，然后点击调整尺寸</p>
          <p>• 可以保持原始宽高比，或自定义宽高</p>
          <p>• 调整后的图片会自动下载</p>
        </div>

        <div>
          <input type="file" @change="handleFileUpload" accept="image/*" />

          <div class="resizer-controls">
            <div class="control-item">
              <label for="width">宽度 (px)</label>
              <input type="number" id="width" v-model.number="width" :disabled="keepAspectRatio" />
            </div>

            <div class="control-item">
              <label for="height">高度 (px)</label>
              <input type="number" id="height" v-model.number="height" :disabled="keepAspectRatio" />
            </div>

            <div class="control-item">
              <label for="quality">质量 (1-100)</label>
              <input type="number" id="quality" v-model.number="quality" min="1" max="100" />
            </div>
          </div>

          <div class="control-item">
            <label>
              <input type="checkbox" v-model="keepAspectRatio"> 保持原始宽高比
            </label>
          </div>

          <div class="controls">
            <button @click="resizeImage" :disabled="!originalImage">调整尺寸</button>
            <button @click="resetForm">重置</button>
          </div>

          <div class="image-preview-container" v-if="originalImage">
            <div class="image-preview">
              <h3>原始图片</h3>
              <img :src="originalImage" alt="Original Image" />
              <p>尺寸: {{ originalWidth }} x {{ originalHeight }}</p>
            </div>

            <div class="image-preview" v-if="resizedImage">
              <h3>调整后图片</h3>
              <img :src="resizedImage" alt="Resized Image" />
              <p>尺寸: {{ resizedWidth }} x {{ resizedHeight }}</p>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <script>
    const { createApp, ref, watch } = Vue;

    createApp({
      setup() {
        const originalImage = ref('');
        const originalWidth = ref(0);
        const originalHeight = ref(0);
        const width = ref(800);
        const height = ref(600);
        const quality = ref(80);
        const keepAspectRatio = ref(true);
        const resizedImage = ref('');
        const resizedWidth = ref(0);
        const resizedHeight = ref(0);

        const handleFileUpload = (event) => {
          const file = event.target.files[0];
          if (!file) return;

          const reader = new FileReader();
          reader.onload = (e) => {
            originalImage.value = e.target.result;

            // 获取原始图片尺寸
            const img = new Image();
            img.onload = () => {
              originalWidth.value = img.width;
              originalHeight.value = img.height;

              // 如果保持宽高比，则根据原始比例设置新尺寸
              if (keepAspectRatio.value) {
                const aspectRatio = img.width / img.height;
                width.value = Math.round(height.value * aspectRatio);
              }
            };
            img.src = e.target.result;
          };
          reader.readAsDataURL(file);
        };

        watch(keepAspectRatio, (newVal) => {
          if (newVal && originalImage.value) {
            const aspectRatio = originalWidth.value / originalHeight.value;
            width.value = Math.round(height.value * aspectRatio);
          }
        });

        watch(height, (newHeight) => {
          if (keepAspectRatio.value && originalImage.value) {
            const aspectRatio = originalWidth.value / originalHeight.value;
            width.value = Math.round(newHeight * aspectRatio);
          }
        });

        watch(width, (newWidth) => {
          if (keepAspectRatio.value && originalImage.value) {
            const aspectRatio = originalHeight.value / originalWidth.value;
            height.value = Math.round(newWidth * aspectRatio);
          }
        });

        const resizeImage = () => {
          if (!originalImage.value) return;

          const img = new Image();
          img.onload = () => {
            const canvas = document.createElement('canvas');
            canvas.width = width.value;
            canvas.height = height.value;

            const ctx = canvas.getContext('2d');
            ctx.drawImage(img, 0, 0, width.value, height.value);

            const mimeType = 'image/jpeg';
            const newQuality = quality.value / 100;
            resizedImage.value = canvas.toDataURL(mimeType, newQuality);
            resizedWidth.value = width.value;
            resizedHeight.value = height.value;

            // 创建下载链接
            const link = document.createElement('a');
            link.href = resizedImage.value;
            link.download = 'resized_image.jpg';
            link.click();
          };
          img.src = originalImage.value;
        };

        const resetForm = () => {
          originalImage.value = '';
          width.value = 800;
          height.value = 600;
          quality.value = 80;
          keepAspectRatio.value = true;
          resizedImage.value = '';
          originalWidth.value = 0;
          originalHeight.value = 0;
          resizedWidth.value = 0;
          resizedHeight.value = 0;
        };

        return {
          originalImage,
          originalWidth,
          originalHeight,
          width,
          height,
          quality,
          keepAspectRatio,
          resizedImage,
          resizedWidth,
          resizedHeight,
          handleFileUpload,
          resizeImage,
          resetForm
        };
      }
    }).mount('#app');
  </script>
</body>
</html>