//
// This code is part of Document Solutions for PDF demos.
// Copyright (c) MESCIUS inc. All rights reserved.
//
using System.IO;
using System.Drawing;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Text;
namespace DsPdfWeb.Demos
{
// This sample shows how to add the document list panel to the Viewer,
// and fill it with a selection with available PDF documents list loaded from
// the URL specified by documentListUrl option.
// 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 ViewerPdfDocumentList
{
public void CreatePDF(Stream stream)
{
// Note:
//
// In the documentListUrl the demo site returns a list that looks like this:
// [
// {"doc_1|base-url/GetPdfFromList?name=doc_1.pdf|Open doc_1"},
// {"doc_2|base-url/GetPdfFromList?name=doc_2.pdf|Open doc_2"},
// {"doc_3|base-url/GetPdfFromList?name=doc_3.pdf|Open doc_3"}
// ]
//
// Alternatively, the item parts can be specified by name:
// [
// {"name": "doc_1", "path": "base-url/GetPdfFromList?name=doc_1.pdf", "title" : "Open doc_1"},
// {"name": "doc_2", "path": "base-url/GetPdfFromList?name=doc_2.pdf", "title" : "Open doc_2"},
// {"name": "doc_3", "path": "base-url/GetPdfFromList?name=doc_3.pdf", "title" : "Open doc_3"}
// ]
//
// The GetPdfFromList demo URL generates and returns a PDF that shows the requested name.
//
var doc = new GcPdfDocument();
var g = doc.NewPage().Graphics;
g.DrawString("Use the Document List panel in the left sidebar to select and open a document.",
new TextFormat() { Font = StandardFonts.Times, FontSize = 12 },
new PointF(72, 72));
doc.Save(stream);
}
// Used by SupportApiDemo to initialize GcPdfViewer.
public static GcPdfViewerSupportApiDemo.Models.PdfViewerOptions PdfViewerOptions
{
get => new GcPdfViewerSupportApiDemo.Models.PdfViewerOptions();
}
public const string JS_CODE = @"
function findBaseUrl(options) {
var s = window.__baseUrl || ((options.supportApi || {}).apiUrl || '');
return s[s.length - 1] !== '/' ? s + '/' : s;
}
function createPdfViewer(selector, baseOptions) {
var options = baseOptions || {};
options.documentListUrl = findBaseUrl(options) + 'DocumentList';
options.friendlyFileName = '';
var viewer = new GcPdfViewer(selector, options);
viewer.addDefaultPanels();
var viewerDefault = viewer.toolbarLayout.viewer.default;
viewerDefault.splice(viewerDefault.indexOf(""open""), 1);
var documentListPanelHandle = viewer.addDocumentListPanel();
viewer.onAfterOpen.register(function() {
viewer.leftSidebar.menu.panels.open(documentListPanelHandle.id);
});
return viewer;
}
";
}
}