fix(camera-preview): changes implementation to match Cordova plugin (#…

…441)

* Removes preview settings from options obj and creates proper rect interface

* Changes startCamera() signature to match plugin

* Adds alpha to function signature

* Removes CameraPreviewOptions and CameraPreviewSize interfaces that don't match plugin

* Adds back CameraPreviewSize interface - oops

* Updates docs for startCamera()

* Changes CameraPreviewSize interface to Size to match plugin

* Adds docs for takePicture

* Reverts change to signature of setOnPictureTakenHandler

* Adds CameraPreview prefix to interfaces

src/plugins/camera-preview.ts

@@ -2,25 +2,11 @@ import { Cordova, Plugin } from './plugin';
 import { Observable } from 'rxjs/Observable';
 
 
-export interface CameraPreviewOptions {
+export interface CameraPreviewRect {
   x: number;
   y: number;
   width: number;
   height: number;
-  /**
-   * Choose the camera to use (front- or back-facing).
-   *  'front' for front camera
-   *  'rear' for rear camera
-   */
-  camera: string;
-  /** Take photo on tap */
-  tapPhoto: boolean;
-  /** */
-  previewDrag: boolean;
-  /**  */
-  toBack: boolean;
-  /** Alpha use when toBack is set to true */
-  alpha: number;
 }
 
 export interface CameraPreviewSize {
@@ -46,12 +32,19 @@ export class CameraPreview {
 
   /**
    * Starts the camera preview instance.
-   * @param {CameraPreviewOptions} options for the preview
+   * @param {CameraPreviewRect} position and size of the preview window - {x: number, y: number, width: number, height: number}
+   * @param {string} which camera to use - 'front' | 'back'
+   * @param {boolean} enable tap to take picture
+   * @param {boolean} enable preview box drag across the screen
+   * @param {boolean} send preview box to the back of the webview
+   * @param {number} alpha of the preview box
    */
   @Cordova({
     sync: true
   })
-  static startCamera(options: CameraPreviewOptions): void { };
+  static startCamera(rect: CameraPreviewRect, defaultCamera: string, tapEnabled: boolean, dragEnabled: boolean, toBack: boolean, alpha: number): void { 
+
+  };
 
   /**
    * Stops the camera preview instance.
@@ -63,6 +56,7 @@ export class CameraPreview {
 
   /**
    * Take the picture, the parameter size is optional
+   * @param {CameraPreviewSize} optional - size of the picture to take
    */
   @Cordova({
     sync: true