advanced-cropper/node/extensions/prevent-zoom/index.js

The core of the advanced cropper libraries family

'use strict';

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

require('tslib');
var utils = require('../../service/utils.js');
var helpers = require('../../service/helpers.js');
var copyState = require('../../state/copyState.js');
require('../../types/index.js');
require('../../state/setCoordinates.js');
var fitCoordinates = require('../../service/fitCoordinates.js');

function preventZoom(state, settings, action) {
    if (action && action.immediately && helpers.isInitializedState(state)) {
        var result = copyState.copyState(state);
        var imageSize = helpers.getTransformedImageSize(state);
        var restrictionsSize = helpers.getAreaSizeRestrictions(state, settings);
        var visibleAreaSize = {
            width: Math.max(Math.min(imageSize.width, restrictionsSize.maxWidth), restrictionsSize.minWidth),
            height: Math.max(Math.min(imageSize.height, restrictionsSize.maxHeight), restrictionsSize.minHeight),
        };
        if (utils.ratio(result.boundary) > utils.ratio(imageSize)) {
            result.visibleArea.height = visibleAreaSize.height;
            result.visibleArea.width = visibleAreaSize.height * utils.ratio(result.boundary);
        }
        else {
            result.visibleArea.width = visibleAreaSize.width;
            result.visibleArea.height = visibleAreaSize.width / utils.ratio(result.boundary);
        }
        result.visibleArea = utils.moveToPositionRestrictions(result.visibleArea, helpers.getAreaPositionRestrictions(result, settings));
        return fitCoordinates.fitCoordinates(result, settings);
    }
    return state;
}

exports.preventZoom = preventZoom;