Advanced

View as Markdown

Adobe Resources Advanced Art Text Background Removal Bitmap BMP Branched Pipeline Channels Clipping Paths Codecs Color Adjustment Color Conversion Color Management Color Profile Compression Crop Drawing EPS EXIF Extra Channels Filesystem Font Format Conversion Formatted Text GIF Gradient Graphics Container Green Screen Image Validation Indexed format Interoperability IPTC JPG Lossless JPEG Metadata Modify Container Multiple frames Path PDF Personalization Pipeline Pixel Access PNG PSD PSD Processor Rasterization RAW Read Resize Rotate Spot Color Stream SVG Text Text Layout TGA Thumbnail TIFF Transform Transparentize VDP Vignette Watermark WEBP WPF Write XMP

Assemble Pipeline manually

In general, the Pipeline API assumes that each element may have several receivers, and each of them receives the same data to process. Here we illustrate how to implement the use case shown in the Create linear pipeline sample using the Pipeline class only for running, while constructing the data flow manually.

You can read more information about pipelines in the documentation.

Conditionally adding pipeline elements

This sample demonstrates how to conditionally add elements to a pipeline based on the properties of the input image. It shows how to create thumbnails in the sRGB color space with a specified DPI value.

You can read more information about pipelines in the documentation.

Read and write PDF page boxes

This sample shows how to define print production page boundaries (MediaBox, CropBox, BleedBox, TrimBox, and ArtBox) when writing a 300 DPI PDF, and how to read them back afterwards. It builds a bleed-aware business card layout with PdfWriter and PdfPage, converting real-world sizes to pixels with UnitConverter, then reopens the file with PdfReader to show that CropBox, BleedBox, TrimBox, and ArtBox always come back in points regardless of the page's DPI.

Using the OnInit event to configure pipeline elements

What if we want to adjust pipeline element settings depending on the actual input data? In most cases you have access to the source element, but in more sophisticated scenarios the pipeline may be large, and it may be hard to track all possible changes of the image parameters. Or you may decide to split the pipeline assembly logic into several methods. In this case, it is possible to change pipeline element settings from an OnInit event handler. You get the actual image parameters that the element receives from its source, and change the properties according to those parameters. In this example, we'll scale the original image by a factor of 2.5 while preserving its aspect ratio, and place a watermark image in the center. The watermark image will be half the size of the bottom image.

You can read more information about pipelines in the documentation.