//
// This code is part of Document Solutions for PDF demos.
// Copyright (c) MESCIUS inc. All rights reserved.
//
using System;
using System.IO;
using System.Drawing;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Text;
namespace DsPdfWeb.Demos
{
// This sample demonstrates graphical signature feature with support API
// provided by the server running DsPdf. The Annotation Editor's default toolbar
// layout contains a new toolbar button, "Signature tool".
// This and other samples in this section demonstrate the features of GcPdfViewer
// (a JavaScript PDF viewer control included with DsPdf), mainly the ability
// to change PDF files (add or edit annotations and AcroForm fields, rotate pages etc.)
// when the JS viewer on the client is supported by DsPdf running on the server.
//
// To enable the editing features of the viewer, its supportApi property must be set
// to a URL on the server that implements all or some of the edit supporting APIs
// that are known to/expected by the viewer. This DsPdf demo site provides those APIs,
// which makes it possible to demonstrate the editing when you open the PDF viewer
// in this sample. When you download this sample, in addition to the .NET Core
// console app project that generates the sample PDF, an ASP.NET Core project is
// also included in the download zip (located in the GcPdfViewerWeb sub-folder of the
// downloaded zip), which also provides the necessary APIs. In particular, it includes
// a project that implements the APIs and provides them via a special controller.
// It is actually the same controller that is used by this DsPdf demo site, and which
// can be used in any ASP.NET Core site to enable the viewer editing features.
//
// Look at the following files in the sample download zip for more info:
// - GcPdfViewerWeb\SupportApiDemo: the sample ASP.NET Core web site.
// - GcPdfViewerWeb\SupportApiDemo.sln: solution to build/run the sample web site.
// - GcPdfViewerWeb\SupportApi: support API implementation (can be used in any site).
// - GcPdfViewerWeb\SupportApi\Controllers\GcPdfViewerController.cs: support API controller.
//
// Please note that this and other samples in this section are only available in C# at this time.
//
public class ViewerAddSignatureFromToolbar
{
public void CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "Simple-Lease-Agreement.pdf"));
doc.Load(fs);
doc.Save(stream);
}
public const string JS_CODE = @"
var viewer;
function applyNormalViewerLayout() {
viewer.toolbarLayout.viewer = {
default: ['save', 'edit-sign-tool', 'doc-title', '$split', 'about'],
mobile: ['save', 'edit-sign-tool', 'doc-title', '$split', 'about'],
fullscreen: ['$fullscreen', 'save', 'edit-sign-tool', 'doc-title', '$split', 'about']
};
viewer.applyToolbarLayout();
}
function applySignedViewerLayout() {
viewer.toolbarLayout.viewer = {
default: ['save', 'doc-title', '$split', 'about'],
mobile: ['save', 'doc-title', '$split', 'about'],
fullscreen: ['$fullscreen', 'save', 'doc-title', '$split', 'about']
};
viewer.applyToolbarLayout();
}
function onSignatureAdded(resultDetails) {
viewer.scrollAnnotationIntoView(resultDetails.pageIndex, resultDetails.annotation);
applySignedViewerLayout();
}
function createPdfViewer(selector, baseOptions) {
var options = baseOptions || {};
if (!options.supportApi) {
options.supportApi = {
apiUrl: (window.__baseUrl || '') + 'support-api/gc-pdf-viewer',
token: window.afToken || '',
webSocketUrl: false, suppressInfoMessages: true, suppressErrorMessages: true
};
}
options.signTool = {
selectedTab: 'Draw',
saveSignature: false,
penColor: '#000000',
penWidth: 2,
hideSaveSignature: true,
canvasSize: { width: 480, height: 168 },
autoResizeCanvas: false,
destinationScale: 0.33,
afterAdd: function (result) {
onSignatureAdded(result);
return true;
},
location: { x: 87, y: 116 },
title: 'Landlord/Lessor',
};
options.restoreViewStateOnLoad = false;
viewer = new GcPdfViewer(selector, options);
viewer.mouseMode = 1;
viewer.addDefaultPanels();
viewer.addAnnotationEditorPanel();
viewer.zoom = 70;
applyNormalViewerLayout();
return viewer;
}
";
}
}