tdesign-mobile-vue/cjs/_common/js/image-viewer/transform.js

tdesign-mobile-vue

/**
 * tdesign v1.15.0
 * (c) 2026 TDesign Group
 * @license MIT
 */

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var _common_js_inputNumber_number = require('../input-number/number.js');
require('../input-number/large-number.js');
require('@babel/runtime/helpers/slicedToArray');
require('../log/log.js');
require('../../../_chunks/dep-faa5bfcf.js');
require('../../../_chunks/dep-16ad1a12.js');
require('@babel/runtime/helpers/typeof');
require('../../../_chunks/dep-527cf8f4.js');
require('../../../_chunks/dep-e224a131.js');
require('../../../_chunks/dep-194379ee.js');
require('../../../_chunks/dep-642ebff4.js');
require('../../../_chunks/dep-cb7c9eda.js');

var DEFAULT_IMAGE_SCALE = {
  max: 2,
  min: 0.5,
  step: 0.2,
  defaultScale: 1
};
var isImageExceedsViewport = function isImageExceedsViewport(container, modalBox) {
  var containerRect = container.getBoundingClientRect();
  var modalRect = modalBox.getBoundingClientRect();
  return modalRect.left < containerRect.left || modalRect.right > containerRect.right || modalRect.top < containerRect.top || modalRect.bottom > containerRect.bottom;
};
var MIRROR_DEFAULT = 1;
var toggleMirror = function toggleMirror(current) {
  return current > 0 ? -1 : 1;
};
var ROTATE_DEG = -90;
function calcResetRotation(currentDeg) {
  var degreeToRotate = currentDeg % 360;
  if (degreeToRotate === 0) return 0;
  return Math.abs(degreeToRotate) > 180 ? (degreeToRotate + 360) % 360 : degreeToRotate;
}
function clampScale(value, min, max) {
  return Math.max(min, Math.min(max, value));
}
function calcZoomInScale(oldScale, step, min, max) {
  return clampScale(_common_js_inputNumber_number.positiveAdd(oldScale, step), min, max);
}
function calcZoomOutScale(oldScale, step, min, max) {
  return clampScale(_common_js_inputNumber_number.positiveSubtract(oldScale, step), min, max);
}
function calculateTranslateOffset(oldScale, newScale, options) {
  var _options$currentTrans;
  if ((options === null || options === void 0 ? void 0 : options.mouseOffsetX) == null || (options === null || options === void 0 ? void 0 : options.mouseOffsetY) == null) {
    return void 0;
  }
  var scaleRatio = newScale / oldScale;
  var _ref = (_options$currentTrans = options === null || options === void 0 ? void 0 : options.currentTranslate) !== null && _options$currentTrans !== void 0 ? _options$currentTrans : {},
    _ref$translateX = _ref.translateX,
    translateX = _ref$translateX === void 0 ? 0 : _ref$translateX,
    _ref$translateY = _ref.translateY,
    translateY = _ref$translateY === void 0 ? 0 : _ref$translateY;
  var mouseOffsetX = options.mouseOffsetX,
    mouseOffsetY = options.mouseOffsetY;
  return {
    translateX: scaleRatio * translateX + (1 - scaleRatio) * mouseOffsetX,
    translateY: scaleRatio * translateY + (1 - scaleRatio) * mouseOffsetY
  };
}
function zoomIn(oldScale, step, min, max, options) {
  var newScale = calcZoomInScale(oldScale, step, min, max);
  return {
    newScale: newScale,
    zoomResult: {
      newTranslate: calculateTranslateOffset(oldScale, newScale, options)
    }
  };
}
function zoomOut(oldScale, step, min, max, options) {
  var newScale = calcZoomOutScale(oldScale, step, min, max);
  return {
    newScale: newScale,
    zoomResult: {
      newTranslate: calculateTranslateOffset(oldScale, newScale, options)
    }
  };
}

exports.DEFAULT_IMAGE_SCALE = DEFAULT_IMAGE_SCALE;
exports.MIRROR_DEFAULT = MIRROR_DEFAULT;
exports.ROTATE_DEG = ROTATE_DEG;
exports.calcResetRotation = calcResetRotation;
exports.calcZoomInScale = calcZoomInScale;
exports.calcZoomOutScale = calcZoomOutScale;
exports.calculateTranslateOffset = calculateTranslateOffset;
exports.clampScale = clampScale;
exports.isImageExceedsViewport = isImageExceedsViewport;
exports.toggleMirror = toggleMirror;
exports.zoomIn = zoomIn;
exports.zoomOut = zoomOut;
//# sourceMappingURL=transform.js.map