ptprnt/CHANGELOG.md

Changelog

All notable changes to ptprnt will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.2.0] - v0.2.0

Added

• Multi-label support - print multiple labels in sequence
• LabelBuilder API with fluent interface for constructing labels
• FakePrinter driver for testing without hardware (outputs PNG files)
• PrinterService core service for printer operations
• CliParser component with ICliParser interface
• ICairoWrapper interface for testable graphics rendering
• MockCairoWrapper for unit testing
• Pre-commit hook for automatic copyright updates
• USB trace mode for debugging (-Dusb_trace_only=true)

Changed

• Major refactoring: Reorganized codebase into layered architecture
  • Application layer: PtouchPrint, CliParser, PrinterService
  • Printer drivers: Moved to src/printers/ with factory pattern
  • Graphics system: Added builder pattern and Cairo abstraction
  • Core services: Separated into src/core/ directory
• Label class now uses dependency injection for Cairo/Pango
• CLI parsing separated from main application logic
• Updated dependencies to latest versions
• Improved project documentation (README.md, CLAUDE.md)

Fixed

• Label corruption issues resolved
• Printer info retrieval bugs
• USB attachment logic
• Multiple lines handling in labels
• Printer selection logic

[0.1.0] - 2024

Added

• Initial release of ptprnt
• Basic label printing functionality for Brother P-touch P700 series
• Pango/Cairo-based text rendering
• USB device communication via libusb-1.0
• Template-based Bitmap class supporting multiple pixel formats (ALPHA8, RGBX8, RGBA8, ARGB8)
• Monochrome bitmap conversion for printer output
• PrinterDriverFactory for creating printer instances
• USB device abstraction layer (IUsbDevice, UsbDevice, UsbDeviceFactory)
• Command-line interface using CLI11
• Logging with spdlog and file output
• Unit tests using GoogleTest
• Code coverage reporting with gcovr
• Meson build system with C++20 support
• CI/CD pipeline with automated testing

Core Components (v0.1.0)

• PtouchPrint: Main application orchestrator
• P700Printer: Brother P-touch P700 driver implementation
• Bitmap: Template-based image storage
• Label: Text rendering with Pango/Cairo
• Monochrome: Bitmap to monochrome conversion
• UsbDevice: libusb wrapper for device communication

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Project Origins

ptprnt is a modern C++20 rewrite of ptouch-print. All credits for reverse engineering the Brother P-touch USB protocol go to Dominic Rademacher.