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frontend/node_modules/rc-image/lib/getFixScaleEleTransPosition.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = getFixScaleEleTransPosition;
+var _objectSpread2 = _interopRequireDefault(require("@babel/runtime/helpers/objectSpread2"));
+var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
+var _css = require("rc-util/lib/Dom/css");
+function fixPoint(key, start, width, clientWidth) {
+  var startAddWidth = start + width;
+  var offsetStart = (width - clientWidth) / 2;
+  if (width > clientWidth) {
+    if (start > 0) {
+      return (0, _defineProperty2.default)({}, key, offsetStart);
+    }
+    if (start < 0 && startAddWidth < clientWidth) {
+      return (0, _defineProperty2.default)({}, key, -offsetStart);
+    }
+  } else if (start < 0 || startAddWidth > clientWidth) {
+    return (0, _defineProperty2.default)({}, key, start < 0 ? offsetStart : -offsetStart);
+  }
+  return {};
+}
+
+/**
+ * Fix positon x,y point when
+ *
+ * Ele width && height < client
+ * - Back origin
+ *
+ * - Ele width | height > clientWidth | clientHeight
+ * - left | top > 0 -> Back 0
+ * - left | top + width | height < clientWidth | clientHeight -> Back left | top + width | height === clientWidth | clientHeight
+ *
+ * Regardless of other
+ */
+function getFixScaleEleTransPosition(width, height, left, top) {
+  var _getClientSize = (0, _css.getClientSize)(),
+    clientWidth = _getClientSize.width,
+    clientHeight = _getClientSize.height;
+  var fixPos = null;
+  if (width <= clientWidth && height <= clientHeight) {
+    fixPos = {
+      x: 0,
+      y: 0
+    };
+  } else if (width > clientWidth || height > clientHeight) {
+    fixPos = (0, _objectSpread2.default)((0, _objectSpread2.default)({}, fixPoint('x', left, width, clientWidth)), fixPoint('y', top, height, clientHeight));
+  }
+  return fixPos;
+}