RTLSupport.cs

#region Copyright Syncfusion Inc. 2001-2018.
// Copyright Syncfusion Inc. 2001-2018. All rights reserved.
// Use of this code is subject to the terms of our license.
// A copy of the current license can be obtained at any time by e-mailing
// licensing@syncfusion.com. Any infringement will be prosecuted under
// applicable laws. 
#endregion
using System;
using Android.Content;
using Android.Views;
using Android.Widget;
using System.IO;
using Syncfusion.Pdf.Graphics;

using Syncfusion.Pdf;
using Syncfusion.Drawing;
using System.Reflection;

namespace SampleBrowser
{
    public partial class RTLSupport : SamplePage
    {
        private Context m_context;
        public override View GetSampleContent(Context con)
        {
            LinearLayout linear = new LinearLayout(con);
            linear.SetBackgroundColor(Android.Graphics.Color.White);
            linear.Orientation = Orientation.Vertical;
            linear.SetPadding(10, 10, 10, 10);
                       
            TextView space = new TextView(con);
            space.TextSize = 10;
            linear.AddView(space);

            TextView text2 = new TextView(con);
            text2.TextSize = 17;
            text2.TextAlignment = TextAlignment.Center;
            text2.Text = "This sample demonstrates drawing right-to-left language text in the PDF document.";
            text2.SetTextColor(Android.Graphics.Color.ParseColor("#262626"));
            text2.SetPadding(5, 5, 5, 5);

            linear.AddView(text2);

            TextView space1 = new TextView(con);
            space1.TextSize = 10;
            linear.AddView(space1); 
           
            m_context = con;

            TextView space2 = new TextView(con);
            space2.TextSize = 10;
            linear.AddView(space2);

            Button button1 = new Button(con);
            button1.Text = "Generate PDF";
            button1.Click += OnButtonClicked;
            linear.AddView(button1);

            return linear;
        }
        void OnButtonClicked(object sender, EventArgs e)
        {
            //Create a new PDF document
            PdfDocument document = new PdfDocument();

            //Add a page
            PdfPage page = document.Pages.Add();

            //Create font
            Stream arialFontStream = typeof(RTLSupport).GetTypeInfo().Assembly.GetManifestResourceStream("SampleBrowser.Samples.PDF.Assets.arial.ttf");
            PdfFont font = new PdfTrueTypeFont(arialFontStream, 14);

            //Read the text from text file
            Stream rtlText = typeof(RTLSupport).GetTypeInfo().Assembly.GetManifestResourceStream("SampleBrowser.Samples.PDF.Assets.arabic.txt");
            StreamReader reader = new StreamReader(rtlText, System.Text.Encoding.Unicode);
            string text = reader.ReadToEnd();
            reader.Dispose();

            //Create a brush
            PdfBrush brush = new PdfSolidBrush(new PdfColor(0, 0, 0));
            PdfPen pen = new PdfPen(new PdfColor(0, 0, 0));
            SizeF clipBounds = page.Graphics.ClientSize;
            RectangleF rect = new RectangleF(0, 0, clipBounds.Width, clipBounds.Height);

            //Set the property for RTL text
            PdfStringFormat format = new PdfStringFormat();
            format.TextDirection = PdfTextDirection.RightToLeft;
            format.Alignment = PdfTextAlignment.Right;
            format.ParagraphIndent = 35f;

            //Draw text.
            page.Graphics.DrawString(text, font, brush, rect, format);
            
            MemoryStream stream = new MemoryStream();
            //Save the PDF dcoument.
            document.Save(stream);

            //Close the PDF document.
            document.Close();
			
            stream.Position = 0;

            if (stream != null)
            {
                SaveAndroid androidSave = new SaveAndroid();
                androidSave.Save("RTLText.pdf", "application/pdf", stream, m_context);
            }
        }
    }
}