document-processing-docs/knowledge-base/pdf-from-images-with-fixedcontenteditor.md

title	description	type	page_title	slug	tags	res_type
How to Generate a PDF Document from Images with FixedContentEditor	This article explains how to create a PDF document from a collection of images using the RadPdfProcessing library.	how-to	How to Generate a PDF Document from Images with FixedContentEditor	pdf-from-images-with-fixedcontenteditor	pdf,images,editor	kb

Environment

Version	Product	Author
2024.1.124	RadPdfProcessing	Desislava Yordanova

Description

This tutorial demonstrates a sample approach how to generate a PDF document from a collection of images located in a local folder.

Solution

To create the PDF document, we will use a [FixedContentEditor]({%slug radpdfprocessing-editing-fixedcontenteditor%}) which is always associated with a single [RadFixedPage]({%slug radpdfprocessing-model-radfixedpage%}). The editor maintains an internal [Position]({%slug radpdfprocessing-concepts-position%}) inside the page at which the image block element will be inserted and drawn. The Position is adjusted after the image is rendered. If there is no remaining space on the page to draw the next image, a new page will be created and the editor's position will be moved to the beginning of the new page.

        private static void GeneratePdfFromImagesWithFixedContentEditor(string imageFolderPath)
        {
            Size pageSize = new Size(Unit.MmToDip(210), Telerik.Windows.Documents.Media.Unit.MmToDip(297));
            Padding pageMarginsValue = new Telerik.Windows.Documents.Primitives.Padding(
                Unit.MmToDip(20),//left
                 Unit.MmToDip(0),//top
                  Unit.MmToDip(0),//right
                   Unit.MmToDip(0));//bottom
            RadFixedDocument fixedDocument = new RadFixedDocument();
            RadFixedPage fixedPage = fixedDocument.Pages.AddPage();
            fixedPage.Size = pageSize;
            FixedContentEditor fixedEditor = new FixedContentEditor(fixedPage);
            double currentYposition = pageMarginsValue.Top;
            double pageYLimit = pageSize.Height - pageMarginsValue.Bottom;
            string[] imageFiles = Directory.GetFiles(imageFolderPath);

            foreach (string imageFilePath in imageFiles)
            {
                Block imageBlock = new Block();
                imageBlock.SpacingAfter = 0;
                imageBlock.HorizontalAlignment = HorizontalAlignment.Center;
                FileStream fileStream = new FileStream(imageFilePath, FileMode.Open);
                var _imageSource = new Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource(fileStream);
                imageBlock.InsertImage(_imageSource);
                Size imageBlockDesiredSize = imageBlock.Measure();

                double desiredYLocationToDraw = currentYposition + imageBlockDesiredSize.Height;
                if (desiredYLocationToDraw > pageYLimit)
                {
                    //indicate the page end [optional]
                    fixedEditor.Position.Translate(0, pageYLimit - Unit.MmToDip(5));
                    fixedEditor.DrawText("END");
                    //above code is just for testing purposes

                    currentYposition = pageMarginsValue.Top;
                    fixedPage = fixedDocument.Pages.AddPage();
                    fixedPage.Size = pageSize;
                    fixedEditor = new FixedContentEditor(fixedPage);
                    //move the cursor to the beginning of the new page
                    fixedEditor.Position.Translate(pageMarginsValue.Left, currentYposition);
                }
                fixedEditor.DrawBlock(imageBlock);
                currentYposition += imageBlock.ActualSize.Height;
                fixedEditor.Position.Translate(pageMarginsValue.Left, currentYposition);
            }

            PdfFormatProvider provider = new PdfFormatProvider();
            string outputFilePath = @"..\..\sample.pdf";
            File.Delete(outputFilePath);
            using (Stream output = File.OpenWrite(outputFilePath))
            {
                provider.Export(fixedDocument, output);
            }
            Process.Start(outputFilePath);
        }

The produced document is illustrated in the screenshot:

See Also

• [FixedContentEditor]({%slug radpdfprocessing-editing-fixedcontenteditor%})
• [RadFixedPage]({%slug radpdfprocessing-model-radfixedpage%})
• [Position]({%slug radpdfprocessing-concepts-position%})
• [PdfFormatProvider]({%slug radpdfprocessing-formats-and-conversion-pdf-pdfformatprovider%})
• RadPdfProcessing Documentation