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

The core of the advanced cropper libraries family

import 'tslib';
import { ratio, moveToPositionRestrictions } from '../../service/utils.js';
import { isInitializedState, getTransformedImageSize, getAreaSizeRestrictions, getAreaPositionRestrictions } from '../../service/helpers.js';
import { copyState } from '../../state/copyState.js';
import '../../types/index.js';
import '../../state/setCoordinates.js';
import { fitCoordinates } from '../../service/fitCoordinates.js';

function preventZoom(state, settings, action) {
    if (action && action.immediately && isInitializedState(state)) {
        var result = copyState(state);
        var imageSize = getTransformedImageSize(state);
        var restrictionsSize = 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 (ratio(result.boundary) > ratio(imageSize)) {
            result.visibleArea.height = visibleAreaSize.height;
            result.visibleArea.width = visibleAreaSize.height * ratio(result.boundary);
        }
        else {
            result.visibleArea.width = visibleAreaSize.width;
            result.visibleArea.height = visibleAreaSize.width / ratio(result.boundary);
        }
        result.visibleArea = moveToPositionRestrictions(result.visibleArea, getAreaPositionRestrictions(result, settings));
        return fitCoordinates(result, settings);
    }
    return state;
}

export { preventZoom };