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skia / external / github.com / BalazsJako / ImGuiColorTextEdit / 8225bf0c372a7cdc92d6598a751586a616006e40
commit8225bf0c372a7cdc92d6598a751586a616006e40[log] [tgz]
authorMarcel Smit <marcel303@gmail.com>Thu Oct 11 10:16:22 2018 +0200
committerMarcel Smit <marcel303@gmail.com>Thu Oct 11 10:16:22 2018 +0200
tree2b6862fb5c32ca54bf7276b20ea9a489b7f59dc1
parent11877e9a7574f32ca68dfb4f8e11425c32b7db91 [diff]
- Small optimizes SetText, GetText.
- Added GetTextLines and SetTextLines, which directly get passed in a vector of strings. The reasons for having these functions are 1) when I save a file, I want to write '\r\n' or '\n' depending on the line ending mode detected when loading a file, or as set by the user through a menu option. In either case, I want to set the line ending myself, instead of having the text editor use '\n' when concatenating all of the lines. 2) when loading a file, I will read the entire file, detect line endings, create strings in a vector. The regular SetText would have my concatenate all of these strings, only so it can split it up again. Passing the vector directly is more than twice as fast and less cumbersome.
2 files changed
tree: 2b6862fb5c32ca54bf7276b20ea9a489b7f59dc1
  1. .gitignore
  2. ImGuiTextEdit.png
  3. LICENSE
  4. README.md
  5. TextEditor.cpp
  6. TextEditor.h
README.md

ImGuiColorTextEdit

Syntax highlighting text editor for ImGui

Screenshot

Demo project: https://github.com/BalazsJako/ColorTextEditorDemo

This is my attempt to write a relatively simple widget which provides source code editing functionality with basic syntax highlighting.

While it relies on Omar Cornut's https://github.com/ocornut/imgui, it does not follow the “pure” one widget - one function approach. Since the editor has to maintain a relatively complex internal state, it did not seem to be practical to try and enforce fully immediate mode.

The code is work in progress, please report if you find any issues.

Main features are:

  • approximates typical code editor look and feel (essential mouse/keyboard commands work - I mean, the commands I normally use :))
  • undo/redo support
  • extensible, multiple language syntax support
  • identifier declarations: a small piece of text associated with an identifier. The editor displays it in a tooltip when the mouse cursor is hovered over the identifier
  • error markers: the user can specify a list of error messages together the line of occurence, the editor will highligh the lines with red backround and display error message in a tooltip when the mouse cursor is hovered over the line
  • supports large files: there is no explicit limit set on file size or number of lines, performance is not affected when large files are loaded (except syntax coloring, see below)
  • color palette support: you can switch between different color palettes, or even define your own
  • supports both fixed and variable-width fonts

Known issues:

  • syntax highligthing is based on std::regex, which is diasppointingly slow. Because of that, the highlighting process is amortized between multiple frames. Hand-written colorizers and/or a lexical scanner might help resolve this problem.
  • 8 bit character only, no Unicode or Utf support (yet)
  • there's no find/replace support

Don't forget to post your screenshots if you use this little piece of software in order to keep me motivated. :)