Add PDF addon definition

types/dwt/index.d.ts

@@ -12,9 +12,66 @@
 *
 * Copyright 2017, Dynamsoft Corporation
 * Author: Dynamsoft Support Team
-* Version: 13
+* Version: 13.3
 */
 
+/**
+ * Dynamsoft WebTwain Addon PDF
+ */
+declare enum EnumDWT_ConverMode {
+    CM_DEFAULT = 0,
+    TWPT_CM_RENDERALLGRAY = 1
+}
+
+/**
+ * @class
+ */
+interface PDF {
+    /**
+     * Download and install pdf rasterizer add-on on the local system. 
+     * @method Dynamsoft.WebTwain#Download 
+     * @param {string} remoteFile specifies the value of which frame to get.
+     * @param {function} optionalAsyncSuccessFunc optional. The function to call when the download succeeds. Please refer to the function prototype OnSuccess.
+     * @param {function} optionalAsyncFailureFunc optional. The function to call when the download fails. Please refer to the function prototype OnFailure.
+     * @return {bool}
+     */
+    Download(remoteFile: string, optionalAsyncSuccessFunc?: () => void, optionalAsyncFailureFunc?: (errorCode: number, errorString: string) => void): boolean;
+
+    /**
+     *  Input the password to decrypt PDF files using PDF Rasterizer add-on. 
+     * @method Dynamsoft.WebTwain#SetPassword 
+     * @param {string} password Specifies the PDF password.
+     * @return {bool}
+     */
+    SetPassword(password: string): boolean;
+
+    /**
+     *  Set the image convert mode for PDF Rasterizer in Dynamic Web TWAIN. 
+     * @method Dynamsoft.WebTwain#SetConvertMode 
+     * @param {EnumDWT_ConverMode} convertMode Specifies the image convert mode.
+     * @return {bool}
+     */
+    SetConvertMode(convertMode: EnumDWT_ConverMode): boolean;
+
+    /**
+     *  Set the output resolution for the PDF Rasterizer in Dynamic Web TWAIN.
+     * @method Dynamsoft.WebTwain#ReadRect 
+     * @param {float} fResolution Specifies the resolution for convert image from PDF file.
+     * @return {bool}
+     */
+    SetResolution(fResolution: number): boolean;
+
+    /**
+     * Judges whether the local PDF is text-based or not.
+     * @method Dynamsoft.WebTwain#ReadRect 
+     * @param {string} localFile specifies the local path of the target PDF.
+     * @return {bool}
+     */
+    IsTextBasedPDF(localFile: string): boolean;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+
 /**
  * @namespace Dynamsoft
  */
@@ -1261,11 +1318,21 @@ interface Container {
     Height: string | number;
 }
 
+interface WebTwainAddon {
+    PDF: PDF;
+}
+
 /**
  * @class
  */
 // properties (get/set) / sync functions
 interface WebTwain {
+    /**
+     * Returns addon.
+     * @type {WebTwainAddon}
+     */
+    Addon: WebTwainAddon;
+
     /**
      * Returns or sets whether multi-page selection is supported.
      * @type {bool}