CONTRIBUTING

Submitting changes

Please send a GitHub Pull Request with a clear list of what you've done (read more about pull requests).

If you have an idea for new features just open an issue with your suggestion.

Find and correct spelling mistakes
Add (insert your favorite platform or render backend here) demo implementation (some possibilities: DirectX 9/DirectX 10/DirectX 11 and win32 with OpenGL)
Add clipboard user callbacks back into all demos
Add additional widgets
Find a better way to change the style or group style options
Add support for multiple pointers for touch input devices (probably requires to rewrite mouse handling in struct zr_input)
Extend xlib demo to support image drawing with arbitrary image width and height
Change cursor in zr_widget_edit_box and zr_widget_edit_field to thin standard cursor version used in editors
Extend piemenu to support submenus (another ring around the first ring or something like this:) and turn it into a default library widget.
Add label describing the currently active piemenu entry
Add tables with scaleable column width
Rewrite the chart API to support a better range of charts (maybe take notes from Javascript chart frameworks)
Create an API to allow scaling between groups (maybe extend and convert the demo example)
Come up with a better way to provide and create widget and window styles
Add multiple Tab support (maybe use zr_group and add a header)
Extend context to not only support overlapping windows but tiled windows as well

Seperator widget is currently bugged and does not work as intended
Text handling is still a little bit janky and probably needs to be further tested and polished
zr_edit_buffer with multiline flag is bugged for '\n', need to differentiate between visible and non-visible characters

Only use C89 (ANSI C)
Do not use any compiler specific extensions
For indent use four spaces
Do not typedef structs, unions and enums
Variable, object and function names should always be lowercase and use underscores instead of camel case
Whitespace after for, while, if, do and switch
Always use parentheses if you use the sizeof operator (e.g: sizeof(struct zr_context) and not sizeof struct zr_context)
Beginning braces on the new line for functions and on the same line otherwise.
If function becomes to big either a.) create a subblock inside the function and comment or b.) write a functional function
Only use fixed size types (zr_uint, zr_size, ...) if you really need to and use basic types otherwise
Do not include any header files in either zahnrad.h or zahnrad.c
Do not add dependencies rather write your own version if possible
Write correct commit messages: (http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)