//
// 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.Pdf.AcroForms;
using GrapeCity.Documents.Pdf.Graphics;
using GrapeCity.Documents.Drawing;
using GrapeCity.Documents.Text;

namespace DsPdfWeb.Demos
{
    // This sample shows how to convert all text in an existing PDF to glyph outlines.
    // The resulting PDF will look exactly like the original, but all glyphs in it
    // will be rendered as graphics paths. This can be used to manipulate the paths,
    // or to make sure it will be impossible to copy or search the text.
    // Note that the resulting documents will have no fonts (see for example 
    // the Document Properties | Fonts tab in DsPdfViewer).
    // The original PDF used by this sample was generated by Wetlands.
    public class TextToOutlines
    {
        public int CreatePDF(Stream stream)
        {
            using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "Wetlands.pdf"));
            // Load the source PDF into a temp document:
            var srcDoc = new GcPdfDocument();
            srcDoc.Load(fs);
            // Draw all pages of the source document on pages of the new PDF:
            var doc = new GcPdfDocument();
            foreach (var srcPage in srcDoc.Pages)
            {
                var page = doc.Pages.Add(srcPage.Size);
                // Setting Graphics.DrawTextAsPath to true makes all glyphs draw as graphics paths
                // instead of rendering text using fonts:
                page.Graphics.DrawTextAsPath = true;
                // Draw the source page on the target:
                srcPage.Draw(page.Graphics, srcPage.Bounds);
            }
            // Done:
            doc.Save(stream);
            return doc.Pages.Count;
        }
    }
}