PPTXToImage.cs

#region Copyright Syncfusion Inc. 2001-2022.
// Copyright Syncfusion Inc. 2001-2022. 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 System.Collections.Generic;
using Syncfusion.Presentation;
using System.IO;
using COLOR = Syncfusion.Drawing;
using System.Reflection;
using System.Xml;
using System.Linq;
using Syncfusion.iOS.Buttons;
using Syncfusion.PresentationRenderer;
#if __UNIFIED__
using Foundation;
using UIKit;
using CoreGraphics;
#else
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using MonoTouch.CoreGraphics;
using CGRect = System.Drawing.RectangleF;
using CGPoint = System.Drawing.PointF;
using CGSize = System.Drawing.SizeF;
#endif
namespace SampleBrowser
{
	public partial class PPTXToImage : SampleView
	{
        CGRect frameRect = new CGRect();
        float frameMargin = 8.0f;
        UILabel label;
        UILabel imageTypelabel;
        UIButton imageType;
        UIButton inputButton;
        UIButton convertButton;

        //RadioButton
        SfRadioGroup radioGroup = new SfRadioGroup();
        SfRadioButton pngButton = new SfRadioButton();
        SfRadioButton jpegButton = new SfRadioButton();
        public PPTXToImage()
		{
            label = new UILabel();
            imageTypelabel = new UILabel();
            imageType = new UIButton();
            inputButton = new UIButton(UIButtonType.System);
            inputButton.TouchUpInside += OnButtonClicked;
            convertButton = new UIButton(UIButtonType.System);
            convertButton.TouchUpInside += OnConvertClicked;
        }

        void LoadAllowedTextsLabel()
        {
            #region Description Label
            label.Frame = frameRect;
            label.TextColor = UIColor.FromRGB(38 / 255.0f, 38 / 255.0f, 38 / 255.0f);
            label.Text = "This sample demonstrates how to convert the PowerPoint slide to an image.";
            label.Font = UIFont.SystemFontOfSize(15);
            label.Lines = 0;
            label.LineBreakMode = UILineBreakMode.WordWrap;
            if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
            {
                label.Font = UIFont.SystemFontOfSize(18);
                label.Frame = new CGRect(5, 5, frameRect.Location.X + frameRect.Size.Width, 35);
            }
            else
            {
                label.Frame = new CGRect(5, 5, frameRect.Location.X + frameRect.Size.Width, 50);
            }
            this.AddSubview(label);
            #endregion

            #region ImageFormat Label
            if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
            {
                imageTypelabel.Font = UIFont.SystemFontOfSize(18);
                imageTypelabel.Frame = new CGRect(10, 45, frameRect.Location.X + frameRect.Size.Width - 20, 50);
                imageType.Frame = new CGRect(10, 95, frameRect.Location.X + frameRect.Size.Width - 20, 40);
            }
            else
            {
                imageTypelabel.Frame = new CGRect(10, 50, frameRect.Location.X + frameRect.Size.Width - 20, 50);
                imageType.Frame = new CGRect(10, 100, frameRect.Location.X + frameRect.Size.Width - 20, 40);
            }

            //filter Label
            imageTypelabel.TextColor = UIColor.Black;
            imageTypelabel.BackgroundColor = UIColor.Clear;
            imageTypelabel.Text = "Image Format:";
            imageTypelabel.TextAlignment = UITextAlignment.Left;
            imageTypelabel.Font = UIFont.FromName("Helvetica", 16f);
            this.AddSubview(imageTypelabel);

            #endregion

            #region Radio Buttons
            radioGroup.Axis = UILayoutConstraintAxis.Horizontal;
            pngButton.SetTitle("PNG", UIControlState.Normal);
            radioGroup.AddArrangedSubview(pngButton);
            jpegButton.SetTitle("JPEG", UIControlState.Normal);
            radioGroup.AddArrangedSubview(jpegButton);
            pngButton.IsChecked = true;
            radioGroup.Distribution = UIStackViewDistribution.FillProportionally;

            if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
            {
                radioGroup.Frame = new CGRect(130, 55, frameRect.Width - 500, 30);
            }
            else
            {
                radioGroup.Frame = new CGRect(130, 60, frameRect.Width - 90, 30);
            }
            this.AddSubview(radioGroup);
            #endregion

            #region Input Template Button
            //button
            inputButton.SetTitle("Input Template", UIControlState.Normal);
            if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
            {

                inputButton.Frame = new CGRect(0, 105, frameRect.Location.X + frameRect.Size.Width, 10);
            }
            else
            {
                inputButton.Frame = new CGRect(0, (this.Frame.Size.Height / 4) - 5, frameRect.Location.X + frameRect.Size.Width, 10);
            }
            this.AddSubview(inputButton);
            #endregion

            #region Convert Button
            convertButton.SetTitle("Convert", UIControlState.Normal);
            if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
            {
                convertButton.Frame = new CGRect(0, 135, frameRect.Location.X + frameRect.Size.Width, 10);
            }
            else
            {
                convertButton.Frame = new CGRect(0, this.Frame.Size.Height / 4 + 25, frameRect.Location.X + frameRect.Size.Width, 10);
            }
            this.AddSubview(convertButton);
            #endregion
        }

        void OnButtonClicked(object sender, EventArgs e)
        {
            //Load the input template from assembly.
            string resourcePath = "SampleBrowser.Samples.Presentation.Templates.Template.pptx";
            Assembly assembly = Assembly.GetExecutingAssembly();
            Stream fileStream = assembly.GetManifestResourceStream(resourcePath);

            //Create a new memory stream.
            MemoryStream stream = new MemoryStream();

            //Copy input template to newly created memory stream.
            fileStream.CopyTo(stream);
            stream.Position = 0;

            if (stream != null)
            {
                SaveiOS iOSSave = new SaveiOS();
                iOSSave.Save("Template.pptx", "application/mspowerpoint", stream);
            }

        }

        void OnConvertClicked(object sender, EventArgs e)
		{
			string resourcePath = "SampleBrowser.Samples.Presentation.Templates.Template.pptx";
            Assembly assembly = Assembly.GetExecutingAssembly();
            Stream fileStream = assembly.GetManifestResourceStream(resourcePath);
            //Open the existing PowerPoint Presentation.
            IPresentation presentation = Presentation.Open(fileStream);

            //Initialize PresentationRenderer to perform image conversion.
            presentation.PresentationRenderer = new PresentationRenderer();

            string fileName = null;
            string ContentType = null;
            Syncfusion.Presentation.ExportImageFormat imageFormat;
            if (jpegButton != null && (bool)jpegButton.IsChecked)
            {
                imageFormat = ExportImageFormat.Jpeg;
                fileName = "Image.jpeg";
                ContentType = "image/jpeg";
            }
            else
            {
                imageFormat = ExportImageFormat.Png;
                fileName = "Image.png";
                ContentType = "image/png";
            }

            //Convert PowerPoint slide to image.
            Stream stream = presentation.Slides[0].ConvertToImage(imageFormat);

            //Reset the stream position
            stream.Position = 0;

            //Close the PowerPoint Presentation.
            presentation.Close();                        

			if (stream != null)
			{
				SaveiOS iOSSave = new SaveiOS ();
                iOSSave.Save(fileName, ContentType, stream as MemoryStream);
            }

		}

		public override void LayoutSubviews ()
		{
			if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad) {
				frameMargin = 0.0f;
			}
			frameRect = Bounds;
			frameRect.Location = new CGPoint (frameRect.Location.X + frameMargin, frameRect.Location.Y + 1.5f * frameMargin);
			frameRect.Size = new CGSize(frameRect.Size.Width - (frameRect.Location.X + frameMargin), frameRect.Size.Height - (frameRect.Location.Y + 1.5f * frameMargin));

			LoadAllowedTextsLabel ();

			base.LayoutSubviews ();
		}
	}
}