[Experience Sharing] Introduction to OpenHarmony Printing System

An introduction to the OpenHarmony print system architecture

Application layer

• Tripartite applications: applications that use the printing function, mainly including applications such as image galleries;
• PrintSpooler: The system prints preview interface, providing the ability to preview pictures, discover connections (P2P&MDNS), print settings, and execute printing.
• Third-party print driver application: Printer driver implementation based on the CUPS printing system;

Printing services

• PrintManagerClient: provides ArkTs or C/C++ interfaces to the application layer;
• PrintServiceAbility: OH system print service

CUPS

• The CUPS (Common Unix Printing System) is an open-source printing system that is now maintained by the OpenPrinting organization. Key features of CUPS include print queue management, print driver management, network printing support, and more.
• Based on the open-source CUPS printing system, OpenHarmony adapts and retains the core capabilities of CUPS.

Related Links:

• PrintSpooler
• Print the frame
• CUPS
• CUPS-Filters