mirror of
https://github.com/NativeScript/NativeScript.git
synced 2025-08-14 01:43:14 +08:00
512 lines
14 KiB
TypeScript
512 lines
14 KiB
TypeScript
// Definitions.
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import { ImageSource as ImageSourceDefinition, iosSymbolScaleType } from '.';
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import { ImageAsset } from '../image-asset';
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import * as httpModule from '../http';
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// Types.
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import { path as fsPath, knownFolders } from '../file-system';
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import { isFileOrResourcePath, RESOURCE_PREFIX, layout } from '../utils';
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import { Application } from '../application';
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import { Font } from '../ui/styling/font';
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import { Color } from '../color';
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import { getScaledDimensions } from './image-source-common';
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export { isFileOrResourcePath };
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let http: typeof httpModule;
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function ensureHttp() {
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if (!http) {
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http = require('../http');
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}
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}
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let application: android.app.Application;
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let resources: android.content.res.Resources;
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function getApplication() {
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if (!application) {
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application = Application.android.getNativeApplication();
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}
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return application;
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}
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function getResources() {
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if (!resources) {
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resources = getApplication().getResources();
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}
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return resources;
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}
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export class ImageSource implements ImageSourceDefinition {
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public android: android.graphics.Bitmap;
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public ios: UIImage;
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public get height(): number {
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if (this.android) {
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return this.android.getHeight();
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}
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return NaN;
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}
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public get width(): number {
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if (this.android) {
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return this.android.getWidth();
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}
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return NaN;
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}
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private _rotationAngle: number;
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public get rotationAngle(): number {
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return this._rotationAngle;
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}
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public set rotationAngle(value: number) {
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this._rotationAngle = value;
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}
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constructor(nativeSource?: android.graphics.Bitmap | android.graphics.drawable.Drawable) {
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if (nativeSource) {
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this.setNativeSource(nativeSource);
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}
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}
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static fromAsset(asset: ImageAsset): Promise<ImageSource> {
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return new Promise<ImageSource>((resolve, reject) => {
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asset.getImageAsync((image, err) => {
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if (image) {
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resolve(new ImageSource(image));
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} else {
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reject(err);
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}
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});
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});
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}
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static fromUrl(url: string): Promise<ImageSourceDefinition> {
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ensureHttp();
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return http.getImage(url);
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}
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static fromResourceSync(name: string): ImageSource {
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const res = getResources();
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if (res) {
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const identifier: number = res.getIdentifier(name, 'drawable', getApplication().getPackageName());
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if (0 < identifier) {
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// Load BitmapDrawable with getDrawable to make use of Android internal caching
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const bitmapDrawable = <android.graphics.drawable.BitmapDrawable>res.getDrawable(identifier);
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if (bitmapDrawable && bitmapDrawable.getBitmap) {
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return new ImageSource(bitmapDrawable.getBitmap());
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}
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}
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}
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return null;
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}
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static fromResource(name: string): Promise<ImageSource> {
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return new Promise<ImageSource>((resolve, reject) => {
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resolve(ImageSource.fromResourceSync(name));
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});
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}
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static fromFileSync(path: string): ImageSource {
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let fileName = typeof path === 'string' ? path.trim() : '';
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if (fileName.indexOf('~/') === 0) {
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fileName = fsPath.join(knownFolders.currentApp().path, fileName.replace('~/', ''));
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}
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const bitmap = android.graphics.BitmapFactory.decodeFile(fileName, null);
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if (bitmap) {
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const result = new ImageSource(bitmap);
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result.rotationAngle = getRotationAngleFromFile(fileName);
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return result;
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} else {
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return null;
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}
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}
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static fromFile(path: string): Promise<ImageSource> {
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return new Promise<ImageSource>((resolve, reject) => {
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resolve(ImageSource.fromFileSync(path));
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});
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}
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static fromFileOrResourceSync(path: string): ImageSource {
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if (!isFileOrResourcePath(path)) {
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throw new Error(`${path} is not a valid file or resource.`);
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}
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if (path.indexOf(RESOURCE_PREFIX) === 0) {
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return ImageSource.fromResourceSync(path.substr(RESOURCE_PREFIX.length));
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}
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return ImageSource.fromFileSync(path);
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}
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static iosSymbolScaleFor(scale: iosSymbolScaleType): number {
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return 0;
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}
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static fromSystemImageSync(name: string): ImageSource {
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return ImageSource.fromResourceSync(name);
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}
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static fromSystemImage(name: string): Promise<ImageSource> {
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return ImageSource.fromResource(name);
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}
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static fromDataSync(data: any): ImageSource {
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const bitmap = android.graphics.BitmapFactory.decodeStream(data);
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return bitmap ? new ImageSource(bitmap) : null;
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}
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static fromData(data: any): Promise<ImageSource> {
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return new Promise<ImageSource>((resolve, reject) => {
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resolve(ImageSource.fromDataSync(data));
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});
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}
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static fromBase64Sync(source: string): ImageSource {
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let bitmap: android.graphics.Bitmap;
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if (typeof source === 'string') {
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const bytes = android.util.Base64.decode(source, android.util.Base64.DEFAULT);
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bitmap = android.graphics.BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
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}
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return bitmap ? new ImageSource(bitmap) : null;
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}
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static fromBase64(source: string): Promise<ImageSource> {
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return new Promise<ImageSource>((resolve, reject) => {
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resolve(ImageSource.fromBase64Sync(source));
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});
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}
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static fromFontIconCodeSync(source: string, font: Font, color: Color): ImageSource {
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font = font || Font.default;
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const paint = new android.graphics.Paint();
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paint.setTypeface(font.getAndroidTypeface());
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paint.setAntiAlias(true);
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if (color) {
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paint.setColor(color.android);
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}
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// TODO: Consider making 36 font size as default for optimal look on TabView and ActionBar
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const scaledFontSize = layout.toDevicePixels(font.fontSize);
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if (scaledFontSize) {
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paint.setTextSize(scaledFontSize);
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}
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const textBounds = new android.graphics.Rect();
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paint.getTextBounds(source, 0, source.length, textBounds);
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const textWidth = textBounds.width();
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const textHeight = textBounds.height();
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if (textWidth > 0 && textHeight > 0) {
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const bitmap = android.graphics.Bitmap.createBitmap(textWidth, textHeight, android.graphics.Bitmap.Config.ARGB_8888);
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const canvas = new android.graphics.Canvas(bitmap);
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canvas.drawText(source, -textBounds.left, -textBounds.top, paint);
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return new ImageSource(bitmap);
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}
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return null;
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}
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public fromAsset(asset: ImageAsset): Promise<ImageSource> {
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console.log('fromAsset() is deprecated. Use ImageSource.fromAsset() instead.');
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return ImageSource.fromAsset(asset).then((imgSource) => {
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this.setNativeSource(imgSource.android);
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return this;
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});
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}
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public loadFromResource(name: string): boolean {
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console.log('fromResource() and loadFromResource() are deprecated. Use ImageSource.fromResource[Sync]() instead.');
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const imgSource = ImageSource.fromResourceSync(name);
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this.android = imgSource ? imgSource.android : null;
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return !!this.android;
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}
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public fromResource(name: string): Promise<boolean> {
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return new Promise<boolean>((resolve, reject) => {
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resolve(this.loadFromResource(name));
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});
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}
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public loadFromFile(path: string): boolean {
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console.log('fromFile() and loadFromFile() are deprecated. Use ImageSource.fromFile[Sync]() instead.');
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const imgSource = ImageSource.fromFileSync(path);
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this.android = imgSource ? imgSource.android : null;
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return !!this.android;
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}
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public fromFile(path: string): Promise<boolean> {
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return new Promise<boolean>((resolve, reject) => {
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resolve(this.loadFromFile(path));
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});
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}
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public loadFromData(data: any): boolean {
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console.log('fromData() and loadFromData() are deprecated. Use ImageSource.fromData[Sync]() instead.');
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const imgSource = ImageSource.fromDataSync(data);
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this.android = imgSource ? imgSource.android : null;
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return !!this.android;
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}
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public fromData(data: any): Promise<boolean> {
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return new Promise<boolean>((resolve, reject) => {
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resolve(this.loadFromData(data));
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});
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}
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public loadFromBase64(source: string): boolean {
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console.log('fromBase64() and loadFromBase64() are deprecated. Use ImageSource.fromBase64[Sync]() instead.');
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const imgSource = ImageSource.fromBase64Sync(source);
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this.android = imgSource ? imgSource.android : null;
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return !!this.android;
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}
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public fromBase64(data: any): Promise<boolean> {
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return new Promise<boolean>((resolve, reject) => {
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resolve(this.loadFromBase64(data));
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});
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}
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public loadFromFontIconCode(source: string, font: Font, color: Color): boolean {
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console.log('loadFromFontIconCode() is deprecated. Use ImageSource.fromFontIconCodeSync() instead.');
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const imgSource = ImageSource.fromFontIconCodeSync(source, font, color);
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this.android = imgSource ? imgSource.android : null;
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return !!this.android;
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}
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public getNativeSource(): android.graphics.Bitmap | android.graphics.drawable.Drawable {
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return this.android;
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}
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public setNativeSource(source: android.graphics.Bitmap | android.graphics.drawable.Drawable): void {
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if (!source) {
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this.android = null;
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} else if (source instanceof android.graphics.Bitmap) {
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this.android = source;
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} else if (source instanceof android.graphics.drawable.Drawable) {
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this.android = org.nativescript.widgets.Utils.getBitmapFromDrawable(source);
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} else {
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throw new Error('The method setNativeSource() expects an android.graphics.Bitmap or android.graphics.drawable.Drawable instance.');
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}
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}
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public saveToFile(path: string, format: 'png' | 'jpeg' | 'jpg', quality = 100): boolean {
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if (!this.android) {
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return false;
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}
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const targetFormat = getTargetFormat(format);
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// TODO add exception handling
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const outputStream = new java.io.BufferedOutputStream(new java.io.FileOutputStream(path));
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const res = this.android.compress(targetFormat, quality, outputStream);
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outputStream.close();
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return res;
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}
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public saveToFileAsync(path: string, format: 'png' | 'jpeg' | 'jpg', quality = 100): Promise<boolean> {
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return new Promise((resolve, reject) => {
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org.nativescript.widgets.Utils.saveToFileAsync(
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this.android,
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path,
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format,
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quality,
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new org.nativescript.widgets.Utils.AsyncImageCallback({
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onSuccess(param0: boolean) {
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resolve(param0);
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},
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onError(param0: java.lang.Exception) {
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if (param0) {
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reject(param0.getMessage());
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} else {
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reject();
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}
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},
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}),
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);
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});
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}
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public toBase64String(format: 'png' | 'jpeg' | 'jpg', quality = 100): string {
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if (!this.android) {
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return null;
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}
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const targetFormat = getTargetFormat(format);
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const outputStream = new java.io.ByteArrayOutputStream();
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const base64Stream = new android.util.Base64OutputStream(outputStream, android.util.Base64.NO_WRAP);
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this.android.compress(targetFormat, quality, base64Stream);
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base64Stream.close();
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outputStream.close();
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return outputStream.toString();
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}
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public toBase64StringAsync(format: 'png' | 'jpeg' | 'jpg', quality = 100): Promise<string> {
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return new Promise((resolve, reject) => {
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org.nativescript.widgets.Utils.toBase64StringAsync(
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this.android,
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format,
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quality,
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new org.nativescript.widgets.Utils.AsyncImageCallback({
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onSuccess(param0: string) {
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resolve(param0);
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},
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onError(param0: java.lang.Exception) {
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if (param0) {
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reject(param0.getMessage());
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} else {
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reject();
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}
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},
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}),
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);
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});
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}
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public resize(maxSize: number, options?: any): ImageSource {
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const dim = getScaledDimensions(this.android.getWidth(), this.android.getHeight(), maxSize);
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const bm: android.graphics.Bitmap = android.graphics.Bitmap.createScaledBitmap(this.android, dim.width, dim.height, options && options.filter);
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return new ImageSource(bm);
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}
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public resizeAsync(maxSize: number, options?: any): Promise<ImageSource> {
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return new Promise((resolve, reject) => {
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org.nativescript.widgets.Utils.resizeAsync(
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this.android,
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maxSize,
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JSON.stringify(options || {}),
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new org.nativescript.widgets.Utils.AsyncImageCallback({
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onSuccess(param0: any) {
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resolve(new ImageSource(param0));
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},
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onError(param0: java.lang.Exception) {
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if (param0) {
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reject(param0.getMessage());
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} else {
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reject();
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}
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},
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}),
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);
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});
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}
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}
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function getTargetFormat(format: 'png' | 'jpeg' | 'jpg'): android.graphics.Bitmap.CompressFormat {
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switch (format) {
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case 'jpeg':
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case 'jpg':
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return android.graphics.Bitmap.CompressFormat.JPEG;
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default:
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return android.graphics.Bitmap.CompressFormat.PNG;
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}
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}
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function getRotationAngleFromFile(filename: string): number {
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let result = 0;
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const ei = new android.media.ExifInterface(filename);
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const orientation = ei.getAttributeInt(android.media.ExifInterface.TAG_ORIENTATION, android.media.ExifInterface.ORIENTATION_NORMAL);
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switch (orientation) {
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case android.media.ExifInterface.ORIENTATION_ROTATE_90:
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result = 90;
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break;
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case android.media.ExifInterface.ORIENTATION_ROTATE_180:
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result = 180;
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break;
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case android.media.ExifInterface.ORIENTATION_ROTATE_270:
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result = 270;
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break;
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}
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return result;
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}
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export function fromAsset(asset: ImageAsset): Promise<ImageSource> {
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console.log('fromAsset() is deprecated. Use ImageSource.fromAsset() instead.');
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return ImageSource.fromAsset(asset);
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}
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export function fromResource(name: string): ImageSource {
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console.log('fromResource() is deprecated. Use ImageSource.fromResourceSync() instead.');
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return ImageSource.fromResourceSync(name);
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}
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export function fromFile(path: string): ImageSource {
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console.log('fromFile() is deprecated. Use ImageSource.fromFileSync() instead.');
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return ImageSource.fromFileSync(path);
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}
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export function fromData(data: any): ImageSource {
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console.log('fromData() is deprecated. Use ImageSource.fromDataSync() instead.');
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return ImageSource.fromDataSync(data);
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}
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export function fromFontIconCode(source: string, font: Font, color: Color): ImageSource {
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console.log('fromFontIconCode() is deprecated. Use ImageSource.fromFontIconCodeSync() instead.');
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return ImageSource.fromFontIconCodeSync(source, font, color);
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}
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export function fromBase64(source: string): ImageSource {
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console.log('fromBase64() is deprecated. Use ImageSource.fromBase64Sync() instead.');
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return ImageSource.fromBase64Sync(source);
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}
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export function fromNativeSource(nativeSource: any): ImageSource {
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console.log('fromNativeSource() is deprecated. Use ImageSource constructor instead.');
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return new ImageSource(nativeSource);
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}
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export function fromUrl(url: string): Promise<ImageSourceDefinition> {
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console.log('fromUrl() is deprecated. Use ImageSource.fromUrl() instead.');
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return ImageSource.fromUrl(url);
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}
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export function fromFileOrResource(path: string): ImageSource {
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console.log('fromFileOrResource() is deprecated. Use ImageSource.fromFileOrResourceSync() instead.');
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return ImageSource.fromFileOrResourceSync(path);
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}
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