guolicui / lexi

Educational implementation of Lexi in C++

C++ implementation of Lexi

Lexi - WYSIWYG text editor described in second chapter of Design Patterns: Elements of Reusable Object-Oriented Software

Motivation - I've been reading the book(as most of you) and faced the questions like "How this pattern is implemented?" or "Is there an open-source implementation of Lexi?". After searching internet for the answers I decided to implement it all by myself.

Note: Even though I've tried to implement stuff as described in the book, there are differences that I'll try to describe in the future.

Pattern referencing

• IGlyph Abstract, base for all graphical units class. Described in Section 2.2 of GoF.
• Composite Described in Section 2.2 of GoF.
• Strategy: basically any child glyph.
• Decorator Note: currently, the scroller isn't a decorator as described in GoF due to implementation specific. Described in Section 2.4.
• Abstract Factory Described in Section 2.5.
• Bridge: Base Window, interface WindowImpl and its child XWindowImpl. Described in Section 2.6.
• Command Described in Section 2.7.

Note: some of the patterns are WIP state and may distinguish from the implementation provided in GoF

Functionality demo

Projects functionality(in Gif format) across the versions

In Progress

• Finishing text editor (Finished basic functionality)
• Migration to Windows

TODO List

• use only smart pointers
• migrate to a Windows(which includes expansion of WindowSystemFactory)
• add important glyphs as text editor
• appropriate processing of all fonts(now only mono is supported)

HowTo

Build Lexi:

cmake %path_to_lexi
make

Linux build troubleshooting

I'm using X11 library for basic graphic operation. If it is not installed in Your system, You can install it:

sudo apt install libx11-dev

Discussion

• Pls let me know if I'm violating some property rights ([email protected])