The backend library#
The backend layer is right above the PDF layer and contains low-level stuff like node lists, font and image loading and putting objects into a PDF file. With this library, you have complete control over the output you need but also have a few helper functions like a line breaking algorithm, hyphenation and color management.
The installation is very simple by importing the package into your code. First initialize a module and get the library:
and use the library:
The starting point is the PDFDocument:
With this document, you can load fonts and images, create pages and shipout pages, define colors and much more. Since the API is a bit extensive, it is covered in different chapters:
- Core units
- The basic definition of units and conversion between basic unit “scaled point” and other units.
- Document level methods and settings
- All building blocks around document structure, pages and output debugging.
- Color spaces
- Color spaces such as RGB, CMYK, spot colors and the PDF accessors.
- Font handling
- Loading fonts and turning text into font specific code points.
- Image loading
- Image loading.
- Languages and hyphenation
- Loading languages and hyphenation handling.
- Nodes and node list manipulation
- Nodes are the basic building blocks of all pages.
- Interactive features
- PDF has lots of interactive features such as hyperlinks and bookmarks.