feat(common-ui cropper): Implement the image cropping component VCropper (#7082)

* feat(common-ui cropper): Implement the image cropping component VCropper

* feat(common-ui cropper): Implement the image cropping component VCropper

* feat(common-ui cropper): Implement the image cropping component VCropper

* feat(common-ui cropper): Implement the image cropping component VCropper

* feat(common-ui cropper): Implement the image cropping component VCropper

packages/effects/common-ui/src/components/cropper/cropper.vue

@@ -0,0 +1,956 @@
+<script setup lang="ts">
+import { onMounted, onUnmounted, ref, watch } from 'vue';
+
+// 定义组件参数
+const props = defineProps<{
+  /** 裁剪比例 格式如 '1:1', '16:9', '3:4' 等（非必填） */
+  aspectRatio?: string;
+  /** 容器高度（默认400） */
+  height?: number;
+  /** 图片地址 */
+  img: string;
+  /** 容器宽度（默认500） */
+  width?: number;
+}>();
+
+const CROPPER_CONSTANTS = {
+  MIN_WIDTH: 60 as const,
+  MIN_HEIGHT: 60 as const,
+  DEFAULT_WIDTH: 500 as const,
+  DEFAULT_HEIGHT: 400 as const,
+  PADDING_RATIO: 0.1 as const,
+  MAX_PADDING: 50 as const,
+} as const;
+
+type Point = [number, number]; // [clientX, clientY]
+type Dimension = [number, number, number, number]; // [top, right, bottom, left]
+
+// 拖拽点类型
+type DragAction =
+  | 'bottom'
+  | 'bottom-left'
+  | 'bottom-right'
+  | 'left'
+  | 'move'
+  | 'right'
+  | 'top'
+  | 'top-left'
+  | 'top-right';
+
+// DOM 引用
+const containerRef = ref<HTMLDivElement | null>(null);
+const bgImageRef = ref<HTMLImageElement | null>(null);
+const maskRef = ref<HTMLDivElement | null>(null);
+const maskViewRef = ref<HTMLDivElement | null>(null);
+const cropperRef = ref<HTMLDivElement | null>(null);
+const cropperViewRef = ref<HTMLDivElement | null>(null);
+
+// 响应式数据
+const isCropperVisible = ref<boolean>(false);
+const validAspectRatio = ref<null | number>(null); // 有效比例值（null表示无固定比例）
+const containerWidth = ref<number>(
+  props.width ?? CROPPER_CONSTANTS.DEFAULT_WIDTH,
+);
+const containerHeight = ref<number>(
+  props.height ?? CROPPER_CONSTANTS.DEFAULT_HEIGHT,
+);
+
+// 裁剪区域尺寸（top, right, bottom, left）
+const currentDimension = ref<Dimension>([50, 50, 50, 50]);
+const initDimension = ref<Dimension>([50, 50, 50, 50]);
+
+// 拖拽状态
+const dragging = ref<boolean>(false);
+const startPoint = ref<Point>([0, 0]);
+const startDimension = ref<Dimension>([0, 0, 0, 0]);
+const direction = ref<Dimension>([0, 0, 0, 0]);
+const moving = ref<boolean>(false);
+
+/**
+ * 计算图片的适配尺寸，保证完整显示且不超过最大宽高限制
+ */
+const calculateImageFitSize = () => {
+  if (!bgImageRef.value) return;
+
+  // 获取图片原始尺寸
+  const imgWidth = bgImageRef.value.naturalWidth;
+  const imgHeight = bgImageRef.value.naturalHeight;
+
+  if (imgWidth === 0 || imgHeight === 0) return;
+
+  // 计算缩放比例（使用传入的width/height，默认500/400）
+  const widthRatio =
+    (props.width ?? CROPPER_CONSTANTS.DEFAULT_WIDTH) / imgWidth;
+  const heightRatio =
+    (props.height ?? CROPPER_CONSTANTS.DEFAULT_HEIGHT) / imgHeight;
+  const scaleRatio = Math.min(widthRatio, heightRatio, 1); // 不放大图片，只缩小
+
+  // 计算适配后的容器尺寸
+  const fitWidth = Math.floor(imgWidth * scaleRatio);
+  const fitHeight = Math.floor(imgHeight * scaleRatio);
+
+  containerWidth.value = fitWidth;
+  containerHeight.value = fitHeight;
+
+  // 重置裁剪框初始尺寸（基于新的容器尺寸）
+  const padding = Math.min(
+    CROPPER_CONSTANTS.MAX_PADDING,
+    Math.floor(fitWidth * CROPPER_CONSTANTS.PADDING_RATIO),
+    Math.floor(fitHeight * CROPPER_CONSTANTS.PADDING_RATIO),
+  );
+
+  initDimension.value = [padding, padding, padding, padding];
+  currentDimension.value = [padding, padding, padding, padding];
+};
+
+/**
+ * 验证并解析比例字符串
+ * @returns {number|null} 比例值 (width/height)，解析失败返回null
+ */
+const parseAndValidateAspectRatio = (): null | number => {
+  // 如果未传入比例参数，直接返回null
+  if (!props.aspectRatio) {
+    return null;
+  }
+
+  // 验证比例格式
+  const ratioRegex = /^[1-9]\d*:[1-9]\d*$/;
+  if (!ratioRegex.test(props.aspectRatio)) {
+    console.warn('裁剪比例格式错误，应为 "数字:数字" 格式，如 "16:9"');
+    return null;
+  }
+
+  // 解析比例
+  const [width, height] = props.aspectRatio.split(':').map(Number);
+
+  // 验证解析结果有效性
+  if (Number.isNaN(width) || Number.isNaN(height) || !width || !height) {
+    console.warn('裁剪比例解析失败，宽高必须为正整数');
+    return null;
+  }
+
+  return width / height;
+};
+
+/**
+ * 设置裁剪区域尺寸
+ * @param {Dimension} dimension - [top, right, bottom, left]
+ */
+const setDimension = (dimension: Dimension) => {
+  currentDimension.value = [...dimension];
+  if (maskViewRef.value) {
+    maskViewRef.value.style.clipPath = `inset(${dimension[0]}px ${dimension[1]}px ${dimension[2]}px ${dimension[3]}px)`;
+  }
+};
+
+/**
+ * 调整裁剪区域至指定比例
+ */
+const adjustCropperToAspectRatio = () => {
+  if (!cropperRef.value) return;
+
+  // 验证并解析比例
+  validAspectRatio.value = parseAndValidateAspectRatio();
+
+  // 如果无有效比例，使用初始尺寸，不强制固定比例
+  if (validAspectRatio.value === null) {
+    setDimension(initDimension.value);
+    return;
+  }
+
+  // 有有效比例，按比例调整裁剪框
+  const ratio = validAspectRatio.value;
+  const containerWidthVal = containerWidth.value;
+  const containerHeightVal = containerHeight.value;
+
+  // 根据比例计算裁剪框尺寸
+  let newHeight: number, newWidth: number;
+
+  // 先按宽度优先计算
+  newWidth = containerWidthVal;
+  newHeight = newWidth / ratio;
+
+  // 如果高度超出容器，按高度优先计算
+  if (newHeight > containerHeightVal) {
+    newHeight = containerHeightVal;
+    newWidth = newHeight * ratio;
+  }
+
+  // 居中显示
+  const leftRight = (containerWidthVal - newWidth) / 2;
+  const topBottom = (containerHeightVal - newHeight) / 2;
+
+  const newDimension: Dimension = [topBottom, leftRight, topBottom, leftRight];
+
+  setDimension(newDimension);
+};
+
+/**
+ * 创建裁剪器
+ */
+const createCropper = () => {
+  // 计算图片适配尺寸
+  calculateImageFitSize();
+
+  isCropperVisible.value = true;
+  adjustCropperToAspectRatio();
+};
+
+/**
+ * 处理鼠标按下事件
+ * @param {MouseEvent} e - 鼠标事件
+ * @param {DragAction} action - 操作类型
+ */
+const handleMouseDown = (e: MouseEvent, action: DragAction) => {
+  dragging.value = true;
+  startPoint.value = [e.clientX, e.clientY];
+  startDimension.value = [...currentDimension.value];
+  direction.value = [0, 0, 0, 0];
+  moving.value = false;
+
+  // 处理移动
+  if (action === 'move') {
+    direction.value[0] = 1;
+    direction.value[2] = -1;
+    direction.value[3] = 1;
+    direction.value[1] = -1;
+    moving.value = true;
+    return;
+  }
+
+  // 处理拖拽方向
+  switch (action) {
+    case 'bottom': {
+      direction.value[2] = -1;
+      break;
+    }
+    case 'bottom-left': {
+      direction.value[2] = -1;
+      direction.value[3] = 1;
+      break;
+    }
+    case 'bottom-right': {
+      direction.value[2] = -1;
+      direction.value[1] = -1;
+      break;
+    }
+    case 'left': {
+      direction.value[3] = 1;
+      break;
+    }
+    case 'right': {
+      direction.value[1] = -1;
+      break;
+    }
+    case 'top': {
+      direction.value[0] = 1;
+      break;
+    }
+    case 'top-left': {
+      direction.value[0] = 1;
+      direction.value[3] = 1;
+      break;
+    }
+    case 'top-right': {
+      direction.value[0] = 1;
+      direction.value[1] = -1;
+      break;
+    }
+  }
+};
+
+/**
+ * 处理鼠标移动事件
+ * @param {MouseEvent} e - 鼠标事件
+ */
+const handleMouseMove = (e: MouseEvent) => {
+  if (!dragging.value || !cropperRef.value) return;
+
+  const { clientX, clientY } = e;
+  const diffX = clientX - startPoint.value[0];
+  const diffY = clientY - startPoint.value[1];
+
+  // 处理移动裁剪框
+  if (moving.value) {
+    handleMoveCropBox(diffX, diffY);
+    return;
+  }
+
+  // 无有效比例
+  if (validAspectRatio.value === null) {
+    handleFreeAspectResize(diffX, diffY);
+  } else {
+    handleFixedAspectResize(diffX, diffY);
+  }
+};
+
+const handleMoveCropBox = (diffX: number, diffY: number) => {
+  const newDimension = [...startDimension.value] as Dimension;
+
+  // 计算临时偏移后的位置
+  const tempTop = startDimension.value[0] + diffY;
+  const tempLeft = startDimension.value[3] + diffX;
+
+  // 计算裁剪框的固定尺寸
+  const cropWidth =
+    containerWidth.value - startDimension.value[3] - startDimension.value[1];
+  const cropHeight =
+    containerHeight.value - startDimension.value[0] - startDimension.value[2];
+
+  // 边界限制：确保裁剪框完全在容器内，且尺寸不变
+  // 顶部边界：top >= 0，且 bottom = 容器高度 - top - 裁剪高度 >= 0
+  newDimension[0] = Math.max(
+    0,
+    Math.min(tempTop, containerHeight.value - cropHeight),
+  );
+  // 底部边界：bottom = 容器高度 - top - 裁剪高度（由top推导，无需额外计算）
+  newDimension[2] = containerHeight.value - newDimension[0] - cropHeight;
+  // 左侧边界：left >= 0，且 right = 容器宽度 - left - 裁剪宽度 >= 0
+  newDimension[3] = Math.max(
+    0,
+    Math.min(tempLeft, containerWidth.value - cropWidth),
+  );
+  // 右侧边界：right = 容器宽度 - left - 裁剪宽度（由left推导，无需额外计算）
+  newDimension[1] = containerWidth.value - newDimension[3] - cropWidth;
+
+  // 强制保证尺寸不变（兜底）
+  const finalWidth = containerWidth.value - newDimension[3] - newDimension[1];
+  const finalHeight = containerHeight.value - newDimension[0] - newDimension[2];
+
+  if (finalWidth !== cropWidth) {
+    newDimension[1] = containerWidth.value - newDimension[3] - cropWidth;
+  }
+
+  if (finalHeight !== cropHeight) {
+    newDimension[2] = containerHeight.value - newDimension[0] - cropHeight;
+  }
+
+  // 更新裁剪区域（仅位置变化，尺寸/比例完全不变）
+  setDimension(newDimension);
+};
+
+const handleFreeAspectResize = (diffX: number, diffY: number) => {
+  const cropperWidth = containerWidth.value;
+  const cropperHeight = containerHeight.value;
+  const currentDimensionNew: Dimension = [0, 0, 0, 0];
+
+  // 计算新的尺寸，确保不小于最小值
+  currentDimensionNew[0] = Math.min(
+    Math.max(startDimension.value[0] + direction.value[0] * diffY, 0),
+    cropperHeight - CROPPER_CONSTANTS.MIN_HEIGHT,
+  );
+
+  currentDimensionNew[1] = Math.min(
+    Math.max(startDimension.value[1] + direction.value[1] * diffX, 0),
+    cropperWidth - CROPPER_CONSTANTS.MIN_WIDTH,
+  );
+
+  currentDimensionNew[2] = Math.min(
+    Math.max(startDimension.value[2] + direction.value[2] * diffY, 0),
+    cropperHeight - CROPPER_CONSTANTS.MIN_HEIGHT,
+  );
+
+  currentDimensionNew[3] = Math.min(
+    Math.max(startDimension.value[3] + direction.value[3] * diffX, 0),
+    cropperWidth - CROPPER_CONSTANTS.MIN_WIDTH,
+  );
+
+  // 确保裁剪区域宽度和高度不小于最小值
+  const newWidth =
+    cropperWidth - currentDimensionNew[3] - currentDimensionNew[1];
+  const newHeight =
+    cropperHeight - currentDimensionNew[0] - currentDimensionNew[2];
+
+  if (newWidth < CROPPER_CONSTANTS.MIN_WIDTH) {
+    if (direction.value[3] === 1) {
+      currentDimensionNew[3] =
+        cropperWidth - currentDimensionNew[1] - CROPPER_CONSTANTS.MIN_WIDTH;
+    } else {
+      currentDimensionNew[1] =
+        cropperWidth - currentDimensionNew[3] - CROPPER_CONSTANTS.MIN_WIDTH;
+    }
+  }
+
+  if (newHeight < CROPPER_CONSTANTS.MIN_HEIGHT) {
+    if (direction.value[0] === 1) {
+      currentDimensionNew[0] =
+        cropperHeight - currentDimensionNew[2] - CROPPER_CONSTANTS.MIN_HEIGHT;
+    } else {
+      currentDimensionNew[2] =
+        cropperHeight - currentDimensionNew[0] - CROPPER_CONSTANTS.MIN_HEIGHT;
+    }
+  }
+
+  setDimension(currentDimensionNew);
+};
+
+const handleFixedAspectResize = (diffX: number, diffY: number) => {
+  if (validAspectRatio.value === null) return;
+  const cropperWidth = containerWidth.value;
+  const cropperHeight = containerHeight.value;
+  // 有有效比例 - 固定比例裁剪
+  const ratio = validAspectRatio.value;
+  const currentWidth =
+    cropperWidth - startDimension.value[3] - startDimension.value[1];
+  const currentHeight =
+    cropperHeight - startDimension.value[0] - startDimension.value[2];
+
+  let newHeight: number, newWidth: number;
+  let widthChange = 0;
+  let heightChange = 0;
+
+  // 计算宽度/高度变化量
+  if (direction.value[3] === 1) widthChange = -diffX;
+  else if (direction.value[1] === -1) widthChange = diffX;
+
+  if (direction.value[0] === 1) heightChange = -diffY;
+  else if (direction.value[2] === -1) heightChange = diffY;
+
+  const isCornerDrag =
+    (direction.value[3] === 1 || direction.value[1] === -1) &&
+    (direction.value[0] === 1 || direction.value[2] === -1);
+
+  // 计算新尺寸
+  if (isCornerDrag) {
+    if (Math.abs(widthChange) > Math.abs(heightChange)) {
+      newWidth = Math.max(
+        CROPPER_CONSTANTS.MIN_WIDTH,
+        currentWidth + widthChange,
+      );
+      newHeight = newWidth / ratio;
+    } else {
+      newHeight = Math.max(
+        CROPPER_CONSTANTS.MIN_HEIGHT,
+        currentHeight + heightChange,
+      );
+      newWidth = newHeight * ratio;
+    }
+  } else {
+    if (direction.value[3] === 1 || direction.value[1] === -1) {
+      newWidth = Math.max(
+        CROPPER_CONSTANTS.MIN_WIDTH,
+        currentWidth + widthChange,
+      );
+      newHeight = newWidth / ratio;
+    } else {
+      newHeight = Math.max(
+        CROPPER_CONSTANTS.MIN_HEIGHT,
+        currentHeight + heightChange,
+      );
+      newWidth = newHeight * ratio;
+    }
+  }
+
+  // 限制最大尺寸
+  const maxWidth = cropperWidth;
+  const maxHeight = cropperHeight;
+
+  if (newWidth > maxWidth) {
+    newWidth = maxWidth;
+    newHeight = newWidth / ratio;
+  }
+
+  if (newHeight > maxHeight) {
+    newHeight = maxHeight;
+    newWidth = newHeight * ratio;
+  }
+
+  // 计算新的位置
+  let newLeft = startDimension.value[3];
+  let newTop = startDimension.value[0];
+  let newRight = startDimension.value[1];
+  let newBottom = startDimension.value[2];
+
+  // 根据拖拽方向调整位置
+  if (direction.value[3] === 1) {
+    newLeft = cropperWidth - newWidth - startDimension.value[1];
+  } else if (direction.value[1] === -1) {
+    newRight = cropperWidth - newWidth - startDimension.value[3];
+  } else if (!isCornerDrag) {
+    // 居中调整
+    const currentHorizontalCenter = startDimension.value[3] + currentWidth / 2;
+    newLeft = Math.max(
+      0,
+      Math.min(cropperWidth - newWidth, currentHorizontalCenter - newWidth / 2),
+    );
+    newRight = cropperWidth - newWidth - newLeft;
+  }
+
+  if (direction.value[0] === 1) {
+    newTop = cropperHeight - newHeight - startDimension.value[2];
+  } else if (direction.value[2] === -1) {
+    newBottom = cropperHeight - newHeight - startDimension.value[0];
+  } else if (!isCornerDrag) {
+    // 居中调整
+    const currentVerticalCenter = startDimension.value[0] + currentHeight / 2;
+    newTop = Math.max(
+      0,
+      Math.min(
+        cropperHeight - newHeight,
+        currentVerticalCenter - newHeight / 2,
+      ),
+    );
+    newBottom = cropperHeight - newHeight - newTop;
+  }
+
+  // 边界检查
+  newLeft = Math.max(0, newLeft);
+  newTop = Math.max(0, newTop);
+  newRight = Math.max(0, newRight);
+  newBottom = Math.max(0, newBottom);
+
+  const newDimension: Dimension = [newTop, newRight, newBottom, newLeft];
+  setDimension(newDimension);
+};
+
+/**
+ * 处理鼠标抬起事件
+ */
+const handleMouseUp = () => {
+  dragging.value = false;
+  moving.value = false;
+  direction.value = [0, 0, 0, 0];
+};
+
+/**
+ * 处理图片加载完成
+ */
+const handleImageLoad = () => {
+  createCropper();
+};
+
+/**
+ * 裁剪图片
+ * @param {'image/jpeg' | 'image/png'} format - 输出图片格式
+ * @param {number} quality - 压缩质量（0-1）
+ * @param {number} targetWidth - 目标宽度（可选，不传则为原始裁剪宽度）
+ * @param {number} targetHeight - 目标高度（可选，不传则为原始裁剪高度）
+ */
+const getCropImage = async (
+  format: 'image/jpeg' | 'image/png' = 'image/jpeg',
+  quality: number = 0.92,
+  targetWidth?: number,
+  targetHeight?: number,
+): Promise<string | undefined> => {
+  if (!props.img || !bgImageRef.value || !containerRef.value) return;
+
+  // 创建临时图片对象获取原始尺寸
+  const tempImg = new Image();
+  // Only set crossOrigin for cross-origin URLs that need CORS
+  if (props.img.startsWith('http://') || props.img.startsWith('https://')) {
+    try {
+      const url = new URL(props.img);
+      if (url.origin !== location.origin) {
+        tempImg.crossOrigin = 'anonymous';
+      }
+    } catch {
+      // Invalid URL, proceed without crossOrigin
+    }
+  }
+
+  // 等待临时图片加载完成
+  await new Promise<void>((resolve, reject) => {
+    const timeout = setTimeout(() => {
+      tempImg.removeEventListener('load', handleLoad);
+      tempImg.removeEventListener('error', handleError);
+      reject(new Error('图片加载超时'));
+    }, 10_000);
+    const handleLoad = () => {
+      clearTimeout(timeout);
+      tempImg.removeEventListener('load', handleLoad);
+      tempImg.removeEventListener('error', handleError);
+      resolve();
+    };
+
+    const handleError = (err: ErrorEvent) => {
+      clearTimeout(timeout);
+      tempImg.removeEventListener('load', handleLoad);
+      tempImg.removeEventListener('error', handleError);
+      reject(new Error(`图片加载失败: ${err.message}`));
+    };
+
+    tempImg.addEventListener('load', handleLoad);
+    tempImg.addEventListener('error', handleError);
+
+    tempImg.src = props.img;
+  });
+
+  const containerRect = containerRef.value.getBoundingClientRect();
+  const imgRect = bgImageRef.value.getBoundingClientRect();
+
+  // 1. 计算图片在容器内的渲染参数
+  const containerWidth = containerRect.width;
+  const containerHeight = containerRect.height;
+  const renderedImgWidth = imgRect.width;
+  const renderedImgHeight = imgRect.height;
+  const imgOffsetX = (containerWidth - renderedImgWidth) / 2;
+  const imgOffsetY = (containerHeight - renderedImgHeight) / 2;
+
+  // 2. 计算裁剪框在容器内的实际坐标
+  const [cropTop, cropRight, cropBottom, cropLeft] = currentDimension.value;
+  const cropBoxWidth = containerWidth - cropLeft - cropRight;
+  const cropBoxHeight = containerHeight - cropTop - cropBottom;
+
+  // 3. 将裁剪框坐标转换为图片上的坐标（考虑图片偏移）
+  const cropOnImgX = cropLeft - imgOffsetX;
+  const cropOnImgY = cropTop - imgOffsetY;
+
+  // 4. 计算渲染图片到原始图片的缩放比例（关键：保留原始像素）
+  const scaleX = tempImg.width / renderedImgWidth;
+  const scaleY = tempImg.height / renderedImgHeight;
+
+  // 5. 映射到原始图片的裁剪区域（精确到原始像素）
+  const originalCropX = Math.max(0, Math.floor(cropOnImgX * scaleX));
+  const originalCropY = Math.max(0, Math.floor(cropOnImgY * scaleY));
+  const originalCropWidth = Math.min(
+    Math.floor(cropBoxWidth * scaleX),
+    tempImg.width - originalCropX,
+  );
+  const originalCropHeight = Math.min(
+    Math.floor(cropBoxHeight * scaleY),
+    tempImg.height - originalCropY,
+  );
+
+  // 6. 处理高清屏适配（关键：解决Retina屏模糊）
+  const dpr = window.devicePixelRatio || 1;
+
+  // 最终画布尺寸（优先使用原始裁剪尺寸，或目标尺寸）
+  const finalWidth = targetWidth || originalCropWidth;
+  const finalHeight = targetHeight || originalCropHeight;
+
+  // 创建画布（乘以设备像素比，保证高清）
+  const canvas = document.createElement('canvas');
+  const ctx = canvas.getContext('2d');
+  if (!ctx) return;
+
+  // 画布物理尺寸（适配高清屏）
+  canvas.width = finalWidth * dpr;
+  canvas.height = finalHeight * dpr;
+
+  // 画布显示尺寸（视觉尺寸）
+  canvas.style.width = `${finalWidth}px`;
+  canvas.style.height = `${finalHeight}px`;
+
+  // 缩放上下文（适配DPR）
+  ctx.scale(dpr, dpr);
+
+  // 7. 绘制裁剪后的图片（使用原始像素绘制，保证清晰度）
+  ctx.drawImage(
+    tempImg,
+    originalCropX, // 原始图片裁剪起始X（精确像素）
+    originalCropY, // 原始图片裁剪起始Y（精确像素）
+    originalCropWidth, // 原始图片裁剪宽度（精确像素）
+    originalCropHeight, // 原始图片裁剪高度（精确像素）
+    0, // 画布绘制起始X
+    0, // 画布绘制起始Y
+    finalWidth, // 画布绘制宽度（目标尺寸）
+    finalHeight, // 画布绘制高度（目标尺寸）
+  );
+
+  // 8. 导出图片（指定质量，平衡清晰度和体积）
+  return canvas.toDataURL(format, quality);
+};
+
+// 监听比例变化，重新调整裁剪框
+watch(() => props.aspectRatio, adjustCropperToAspectRatio);
+
+// 监听width/height变化，重新计算尺寸
+watch([() => props.width, () => props.height], () => {
+  calculateImageFitSize();
+  adjustCropperToAspectRatio();
+});
+
+// 组件挂载时注册全局事件
+onMounted(() => {
+  document.addEventListener('mousemove', handleMouseMove);
+  document.addEventListener('mouseup', handleMouseUp);
+
+  // 如果图片已经加载完成，手动触发创建裁剪器
+  if (
+    bgImageRef.value &&
+    bgImageRef.value.complete &&
+    bgImageRef.value.naturalWidth > 0
+  ) {
+    createCropper();
+  }
+});
+
+// 组件卸载时清理
+onUnmounted(() => {
+  document.removeEventListener('mousemove', handleMouseMove);
+  document.removeEventListener('mouseup', handleMouseUp);
+});
+
+defineExpose({ getCropImage });
+</script>
+
+<template>
+  <div
+    :style="{
+      width: `${width || CROPPER_CONSTANTS.DEFAULT_WIDTH}px`,
+      height: `${height || CROPPER_CONSTANTS.DEFAULT_HEIGHT}px`,
+    }"
+    class="cropper-action-wrapper"
+  >
+    <div
+      ref="containerRef"
+      class="cropper-container"
+      :style="{
+        width: `${containerWidth}px`,
+        height: `${containerHeight}px`,
+      }"
+    >
+      <!-- 原图展示 - 自适应尺寸 -->
+      <img
+        ref="bgImageRef"
+        class="cropper-image"
+        :src="img"
+        @load="handleImageLoad"
+        :style="{
+          maxWidth: '100%',
+          maxHeight: '100%',
+          objectFit: 'contain',
+        }"
+        alt="裁剪原图"
+      />
+
+      <!-- 遮罩层 -->
+      <div
+        ref="maskRef"
+        class="cropper-mask"
+        :style="{
+          display: isCropperVisible ? 'block' : 'none',
+          width: '100%',
+          height: '100%',
+        }"
+      >
+        <div
+          ref="maskViewRef"
+          class="cropper-mask-view"
+          :style="{
+            backgroundImage: `url(${img})`,
+            backgroundSize: 'contain',
+            backgroundPosition: 'center',
+            backgroundRepeat: 'no-repeat',
+            clipPath: `inset(${currentDimension[0]}px ${currentDimension[1]}px ${currentDimension[2]}px ${currentDimension[3]}px)`,
+            width: '100%',
+            height: '100%',
+          }"
+        ></div>
+      </div>
+
+      <!-- 裁剪框 -->
+      <div
+        ref="cropperRef"
+        class="cropper-box"
+        :style="{
+          display: isCropperVisible ? 'block' : 'none',
+          width: '100%',
+          height: '100%',
+        }"
+      >
+        <div
+          ref="cropperViewRef"
+          class="cropper-view"
+          :style="{
+            inset: `${currentDimension[0]}px ${currentDimension[1]}px ${currentDimension[2]}px ${currentDimension[3]}px`,
+          }"
+        >
+          <!-- 裁剪框辅助线-->
+          <span class="cropper-dashed-h"></span>
+          <span class="cropper-dashed-v"></span>
+
+          <!-- 裁剪框拖拽区域 -->
+          <span
+            class="cropper-move-area"
+            @mousedown="handleMouseDown($event, 'move')"
+          ></span>
+
+          <!-- 边框线 -->
+          <span class="cropper-line-e"></span>
+          <span class="cropper-line-n"></span>
+          <span class="cropper-line-w"></span>
+          <span class="cropper-line-s"></span>
+
+          <!-- 边角拖拽点 -->
+          <span
+            class="cropper-point cropper-point-ne"
+            @mousedown="handleMouseDown($event, 'top-right')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-nw"
+            @mousedown="handleMouseDown($event, 'top-left')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-sw"
+            @mousedown="handleMouseDown($event, 'bottom-left')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-se"
+            @mousedown="handleMouseDown($event, 'bottom-right')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+
+          <!-- 边中点拖拽点 -->
+          <span
+            class="cropper-point cropper-point-e"
+            @mousedown="handleMouseDown($event, 'right')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-n"
+            @mousedown="handleMouseDown($event, 'top')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-w"
+            @mousedown="handleMouseDown($event, 'left')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+          <span
+            class="cropper-point cropper-point-s"
+            @mousedown="handleMouseDown($event, 'bottom')"
+          >
+            <span class="cropper-point-inner"></span>
+          </span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.cropper-action-wrapper {
+  @apply box-border flex items-center justify-center;
+  /* 马赛克背景 */
+  background-image:
+    linear-gradient(45deg, #ccc 25%, transparent 25%),
+    linear-gradient(-45deg, #ccc 25%, transparent 25%),
+    linear-gradient(45deg, transparent 75%, #ccc 75%),
+    linear-gradient(-45deg, transparent 75%, #ccc 75%);
+  background-size: 20px 20px;
+  background-position:
+    0 0,
+    0 10px,
+    10px -10px,
+    -10px 0;
+  background-color: transparent;
+}
+
+.cropper-container {
+  @apply relative;
+}
+
+.cropper-image {
+  @apply block;
+}
+
+/* 遮罩层 */
+.cropper-mask {
+  @apply absolute left-0 top-0 bg-black/50;
+}
+
+.cropper-mask-view {
+  @apply absolute left-0 top-0;
+}
+
+/* 裁剪框 */
+.cropper-box {
+  @apply absolute left-0 top-0 z-10;
+}
+
+.cropper-view {
+  @apply absolute bottom-0 left-0 right-0 top-0 select-none outline outline-1 outline-blue-500;
+}
+
+/* 裁剪框辅助线 */
+.cropper-dashed-h {
+  @apply absolute left-0 top-1/3 block h-1/3 w-full border-b border-t border-dashed border-gray-200/50;
+}
+
+.cropper-dashed-v {
+  @apply absolute left-1/3 top-0 block h-full w-1/3 border-l border-r border-dashed border-gray-200/50;
+}
+
+/* 裁剪框拖拽区域 */
+.cropper-move-area {
+  @apply absolute left-0 top-0 block h-full w-full cursor-move bg-white/10;
+}
+
+/* 边框拖拽线 */
+.cropper-line-e,
+.cropper-line-n,
+.cropper-line-w,
+.cropper-line-s {
+  @apply absolute block bg-blue-500/10;
+}
+
+.cropper-line-e {
+  @apply right-[-3px] top-0 h-full w-1;
+}
+
+.cropper-line-n {
+  @apply left-0 top-[-3px] h-1 w-full;
+}
+
+.cropper-line-w {
+  @apply left-[-3px] top-0 h-full w-1;
+}
+
+.cropper-line-s {
+  @apply bottom-[-3px] left-0 h-1 w-full;
+}
+
+/* 拖拽点 */
+.cropper-point {
+  @apply absolute flex h-2 w-2 items-center justify-center bg-blue-500;
+}
+
+.cropper-point-inner {
+  @apply block h-1.5 w-1.5 bg-white;
+}
+
+/* 边角拖拽点位置和光标 */
+.cropper-point-ne {
+  @apply right-[-5px] top-[-5px] cursor-ne-resize;
+}
+
+.cropper-point-nw {
+  @apply left-[-5px] top-[-5px] cursor-nw-resize;
+}
+
+.cropper-point-sw {
+  @apply bottom-[-5px] left-[-5px] cursor-sw-resize;
+}
+
+.cropper-point-se {
+  @apply bottom-[-5px] right-[-5px] cursor-se-resize;
+}
+
+/* 边中点拖拽点位置和光标 */
+.cropper-point-e {
+  @apply right-[-5px] top-1/2 -mt-1 cursor-e-resize;
+}
+
+.cropper-point-n {
+  @apply left-1/2 top-[-5px] -ml-1 cursor-n-resize;
+}
+
+.cropper-point-w {
+  @apply left-[-5px] top-1/2 -mt-1 cursor-w-resize;
+}
+
+.cropper-point-s {
+  @apply bottom-[-5px] left-1/2 -ml-1 cursor-s-resize;
+}
+</style>

packages/effects/common-ui/src/components/cropper/index.ts

@@ -0,0 +1 @@
+export { default as VCropper } from './cropper.vue';

packages/effects/common-ui/src/components/index.ts

@@ -2,6 +2,7 @@ export * from './api-component';
 export * from './captcha';
 export * from './col-page';
 export * from './count-to';
+export * from './cropper';
 export * from './ellipsis-text';
 export * from './icon-picker';
 export * from './json-viewer';

playground/src/locales/langs/en-US/examples.json

@@ -75,5 +75,8 @@
   },
   "function": {
     "contentMenu": "Content Menu"
+  },
+  "cropper": {
+    "title": "Cropper"
   }
 }

playground/src/locales/langs/zh-CN/examples.json

@@ -75,5 +75,8 @@
   },
   "function": {
     "contentMenu": "上下文菜单"
+  },
+  "cropper": {
+    "title": "图片裁剪"
   }
 }

playground/src/router/routes/modules/examples.ts

@@ -337,6 +337,15 @@ const routes: RouteRecordRaw[] = [
           title: $t('examples.function.contentMenu'),
         },
       },
+      {
+        name: 'CropperDemo',
+        path: '/examples/cropper',
+        component: () => import('#/views/examples/cropper/index.vue'),
+        meta: {
+          icon: 'mdi:crop',
+          title: $t('examples.cropper.title'),
+        },
+      },
     ],
   },
 ];

playground/src/views/examples/cropper/index.vue

@@ -0,0 +1,138 @@
+<script lang="ts" setup>
+import type { UploadChangeParam } from 'ant-design-vue';
+
+import { ref } from 'vue';
+
+import { Page, VCropper } from '@vben/common-ui';
+
+import { Button, Card, Select, Upload } from 'ant-design-vue';
+
+const options = [
+  { label: '1:1', value: '1:1' },
+  { label: '16:9', value: '16:9' },
+  { label: '不限制', value: '' },
+];
+
+const cropperRef = ref<InstanceType<typeof VCropper>>();
+
+const cropLoading = ref(false);
+const validAspectRatio = ref<string | undefined>('1:1');
+const imgUrl = ref('');
+const cropperImg = ref();
+
+const selectImgFile = (event: UploadChangeParam) => {
+  const file = event.fileList[0]?.originFileObj;
+  if (!file) return;
+
+  if (!file.type.startsWith('image/')) {
+    console.error('请上传图片文件');
+    return;
+  }
+
+  const reader = new FileReader();
+  reader.addEventListener('load', (e) => {
+    imgUrl.value = e.target?.result as string;
+  });
+  reader.addEventListener('error', () => {
+    console.error('Failed to read file');
+  });
+
+  reader.readAsDataURL(file);
+};
+
+const cropImage = async () => {
+  if (!cropperRef.value) return;
+  cropLoading.value = true;
+  try {
+    cropperImg.value = await cropperRef.value.getCropImage();
+  } catch (error) {
+    console.error('图片裁剪失败:', error);
+  } finally {
+    cropLoading.value = false;
+  }
+};
+
+/**
+ * 下载图片
+ */
+const downloadImage = () => {
+  if (!cropperImg.value) return;
+
+  const link = document.createElement('a');
+  link.download = `cropped-image-${Date.now()}.png`;
+  link.href = cropperImg.value;
+  link.click();
+};
+</script>
+<template>
+  <Page
+    title="VCropper 图片裁剪"
+    description="VCropper是一个图片裁剪组件，提供基础的图片裁剪功能。"
+  >
+    <Card>
+      <div class="image-cropper-container">
+        <div class="cropper-ratio-display">
+          <label class="ratio-label">当前裁剪比例：</label>
+          <Select
+            class="w-24"
+            v-model:value="validAspectRatio"
+            :options="options"
+          />
+          <Upload
+            :max-count="1"
+            :show-upload-list="false"
+            :before-upload="() => false"
+            @change="selectImgFile"
+          >
+            <Button>上传图片</Button>
+          </Upload>
+        </div>
+
+        <div v-if="imgUrl" class="cropper-main-wrapper">
+          <VCropper
+            ref="cropperRef"
+            :img="imgUrl"
+            :aspect-ratio="validAspectRatio"
+            :width="600"
+            :height="600"
+          />
+
+          <!-- 操作按钮组 -->
+          <div class="cropper-btn-group">
+            <Button :loading="cropLoading" @click="cropImage" type="primary">
+              裁剪
+            </Button>
+            <Button v-if="cropperImg" @click="downloadImage" danger>
+              下载图片
+            </Button>
+          </div>
+
+          <!-- 裁剪预览 -->
+          <img
+            v-if="cropperImg"
+            class="h-full w-80"
+            :src="cropperImg"
+            alt="裁剪预览"
+          />
+        </div>
+      </div>
+    </Card>
+  </Page>
+</template>
+<style scoped>
+/* 比例展示区域 */
+.cropper-ratio-display {
+  @apply my-2.5 flex items-center justify-start gap-4;
+}
+
+.ratio-label {
+  @apply text-sm font-medium;
+}
+/* 主裁剪区域 */
+.cropper-main-wrapper {
+  @apply flex items-center gap-4;
+}
+.cropper-btn-group {
+  @apply flex flex-col gap-2;
+}
+</style>