@ticnat/nativescript-image-cache/and-ts-lib/helpers.js

Plugin for caching images

/// <reference path="./types.d.ts" />
import { StretchMapping as stretchMap } from './stretch-mapping';
import { ProxyBaseControllerListener } from './proxy-base-controller-listener';
import { isString } from '@nativescript/core/utils/types';
import { knownFolders, path, Utils } from '@nativescript/core';
export class Helpers {
    static setNativeStretch(draweeHierarchy, stretch) {
        let frescoStretch = stretchMap.get(stretch) || com.facebook.drawee.drawable.ScalingUtils.ScaleType.CENTER;
        draweeHierarchy.setActualImageScaleType(frescoStretch);
    }
    static setRounded(draweeHierarchy, rounded) {
        let roundingParams = new com.facebook.drawee.generic.RoundingParams.fromCornersRadius(0);
        if (rounded)
            roundingParams.setRoundAsCircle(true);
        else
            roundingParams.setRoundAsCircle(false);
        draweeHierarchy.setRoundingParams(roundingParams);
    }
    static setPlaceholder(draweeHierarchy, src, placeholderStretch) {
        let drawable = this.getPlaceholderImageDrawable(src), nativePlaceholderStretch = stretchMap.get(placeholderStretch) || com.facebook.drawee.drawable.ScalingUtils.ScaleType.CENTER;
        if (null == drawable) {
            return;
        }
        draweeHierarchy.setPlaceholderImage(drawable, nativePlaceholderStretch);
    }
    static getPlaceholderImageDrawable(value) {
        let fileName = '', drawable = null;
        if (isString(value)) {
            value = value.trim();
            if (Utils.isFileOrResourcePath(value)) {
                if (0 === value.indexOf('~/')) {
                    fileName = path.join(knownFolders.currentApp().path, value.replace('~/', ''));
                    drawable = android.graphics.drawable.Drawable.createFromPath(fileName);
                }
                else if (0 === value.indexOf('res')) {
                    fileName = value;
                    let res = Utils.ad.getApplicationContext().getResources();
                    let resName = fileName.substr(Utils.RESOURCE_PREFIX.length);
                    let identifier = res.getIdentifier(resName, 'drawable', Utils.ad.getApplication().getPackageName());
                    drawable = res.getDrawable(identifier);
                }
            }
        }
        return drawable;
    }
    static setSource(image, value) {
        image.nativeView.setImageURI(null, null);
        if (isString(value)) {
            value = value.trim();
            if (Utils.isFileOrResourcePath(value) || 0 === value.indexOf('http')) {
                image.isLoading = true;
                let fileName = '';
                if (0 === value.indexOf('~/')) {
                    fileName = path.join(knownFolders.currentApp().path, value.replace('~/', ''));
                    fileName = 'file:' + fileName;
                }
                else if (0 === value.indexOf('res')) {
                    fileName = value;
                    let res = Utils.ad.getApplicationContext().getResources();
                    let resName = fileName.substr(Utils.RESOURCE_PREFIX.length);
                    let identifier = res.getIdentifier(resName, 'drawable', Utils.ad.getApplication().getPackageName());
                    fileName = 'res:/' + identifier;
                }
                else if (0 === value.indexOf('http')) {
                    image.isLoading = true;
                    fileName = value;
                }
                image.nativeView.setImageURI(android.net.Uri.parse(fileName), null);
                let controllerListener = new ProxyBaseControllerListener();
                controllerListener.setNSCachedImage(image);
                let controller = com.facebook.drawee.backends.pipeline.Fresco.newDraweeControllerBuilder().setControllerListener(controllerListener).setUri(android.net.Uri.parse(fileName)).build();
                image.nativeView.setController(controller);
                image.requestLayout();
            }
            else {
                throw new Error('Path "' + '" is not a valid file or resource.');
            }
        }
    }
    static onRoundedPropertyChanged(nativeObject, value) {
        if (!nativeObject) {
            return;
        }
        let draweeHierarchy = nativeObject.getHierarchy();
        this.setRounded(draweeHierarchy, value);
    }
    static onPlaceholderPropertyChanged(nativeObject, src, placeholderStretch) {
        if (!nativeObject) {
            return;
        }
        let draweeHierarchy = nativeObject.getHierarchy();
        this.setPlaceholder(draweeHierarchy, src, placeholderStretch);
    }
    static onSrcPropertySet(viewWrapper, src) {
        let image = viewWrapper, value = src;
        if (!image.nativeView) {
            return;
        }
        this.setSource(image, value);
    }
    static onStretchPropertyChanged(nativeObject, value) {
        if (!nativeObject) {
            return;
        }
        let draweeHierarchy = nativeObject.getHierarchy();
        this.setNativeStretch(draweeHierarchy, value);
    }
}
//# sourceMappingURL=helpers.js.map