NativeScript/tns-core-modules/image-source/image-source.d.ts

/**
 * Contains the ImageSource class, which encapsulates the common abstraction behind a platform specific object (typically a Bitmap) that is used as a source for images.
 * @module "image-source"
 */ /** */

import * as imageAssetModule from "../image-asset";
/**
 * Encapsulates the common abstraction behind a platform specific object (typically a Bitmap) that is used as a source for images.
 */
export class ImageSource {
   /**
    * Gets the height of this instance. This is a read-only property.
    */
    height: number;

   /**
    * Gets the width of this instance. This is a read-only property.
    */
    width: number;

   /**
    * Gets or sets the rotation angle that should be applied to the image. (Used in android)
    */
    rotationAngle: number;

   /**
    * The iOS-specific [UIImage](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIImage_Class/) instance. Will be undefined when running on Android.
    */
    ios: any /* UIImage */;

   /**
    * The Android-specific [image](http://developer.android.com/reference/android/graphics/Bitmap.html) instance. Will be undefined when running on iOS.
    */
    android: any /* android.graphics.Bitmap */;

    /**
     * Loads this instance from the specified asset asynchronously.
     * @param asset The ImageAsset instance used to create ImageSource.
     */
    fromAsset(asset: imageAssetModule.ImageAsset): Promise<ImageSource>;

   /**
    * Loads this instance from the specified resource name.
    * @param name The name of the resource (without its extension).
    */
    loadFromResource(name: string): boolean;

   /**
    * Loads this instance from the specified resource name asynchronously.
    * @param name The name of the resource (without its extension).
    */
    fromResource(name: string): Promise<boolean>;
    
   /**
    * Loads this instance from the specified file.
    * @param path The location of the file on the file system.
    */
    loadFromFile(path: string): boolean;

   /**
    * Loads this instance from the specified file asynchronously.
    * @param path The location of the file on the file system.
    */
    fromFile(path: string): Promise<boolean>;

   /**
    * Loads this instance from the specified native image data.
    * @param data The native data (byte array) to load the image from. This will be either Stream for Android or NSData for iOS.
    */
    loadFromData(data: any): boolean;
    
   /**
    * Loads this instance from the specified native image data asynchronously.
    * @param data The native data (byte array) to load the image from. This will be either Stream for Android or NSData for iOS.
    */
    fromData(data: any): Promise<boolean>;        

    /**
     * Loads this instance from the specified base64 encoded string.
     * @param source The Base64 string to load the image from.
     */
    loadFromBase64(source: string): boolean;
    
    /**
     * Loads this instance from the specified base64 encoded string asynchronously.
     * @param source The Base64 string to load the image from.
     */
    fromBase64(source: string): Promise<boolean>;        

   /**
    * Sets the provided native source object (typically a Bitmap or a UIImage).
    * This will update either the android or ios properties, depending on the target os.
    * @param source The native image object. Will be either a Bitmap for Android or a UIImage for iOS.
    */
    setNativeSource(source: any): void;

   /**
    * Saves this instance to the specified file, using the provided image format and quality.
    * @param path The path of the file on the file system to save to.
    * @param format The format (encoding) of the image.
    * @param quality Optional parameter, specifying the quality of the encoding. Defaults to the maximum available quality. Quality varies on a scale of 0 to 100.
    */
    saveToFile(path: string, format: "png" | "jpeg" | "jpg", quality?: number): boolean;

    /**
     * Converts the image to base64 encoded string, using the provided image format and quality.
     * @param format The format (encoding) of the image.
     * @param quality Optional parameter, specifying the quality of the encoding. Defaults to the maximum available quality. Quality varies on a scale of 0 to 100.
     */
    toBase64String(format: "png" | "jpeg" | "jpg", quality?: number): string;
}

/**
 * Creates a new ImageSource instance and loads it from the specified image asset asynchronously.
 * @param asset The image asset.
 */
export function fromAsset(asset: imageAssetModule.ImageAsset): Promise<ImageSource>;

/**
* Creates a new ImageSource instance and loads it from the specified resource name.
* @param name The name of the resource (without its extension).
*/
export function fromResource(name: string): ImageSource;

/**
* Creates a new ImageSource instance and loads it from the specified file.
* @param path The location of the file on the file system.
*/
export function fromFile(path: string): ImageSource;

/**
* Creates a new ImageSource instance and loads it from the specified native image data.
* @param data The native data (byte array) to load the image from. This will be either Stream for Android or NSData for iOS.
*/
export function fromData(data: any): ImageSource;

/**
 * Creates a new ImageSource instance and loads it from the specified base64 encoded string.
 * @param source The base64 encoded string to load the image from.
 */
export function fromBase64(source: string): ImageSource;

/**
* Creates a new ImageSource instance and sets the provided native source object (typically a Bitmap).
* The native source object will update either the android or ios properties, depending on the target os.
* @param source The native image object. Will be either a Bitmap for Android or a UIImage for iOS.
*/
export function fromNativeSource(source: any): ImageSource;

/**
 * Deprecated. Use http.getImage(url: string) instead.
* Downloads the image from the provided Url and creates a new ImageSource instance from it.
* @param url The link to the remote image object. This operation will download and decode the image.
*/
export function fromUrl(url: string): Promise<ImageSource>;

/**
 * Creates a new ImageSource instance and loads it from the specified local file or resource (if specified with the "res://" prefix).
 * @param path The location of the file on the file system.
 */
export function fromFileOrResource(path: string): ImageSource;

/**
 * [Obsolete. Please use utils.isFileOrResourcePath instead!] Returns true if the specified path points to a resource or local file.
 * @param path The path.
 */
export function isFileOrResourcePath(path: string): boolean