ImGUI wrapper

[kassane]

Like zimgui:

• floooh/dcimgui@e58cd9b
• floooh/dcimgui@71851eb

Use D mangling in wrapped-functions.

Steps

• comments
• C functions
• types (needed?)

References

• ImGui Support #10

Q: What is the status of D imgui bindings?

BindBC is known by the D community for its ease of interop with C and C++ libraries without static linking, just a dynamic loader.
However C++ interop is done manually without automatic generation prone to human error and slow progress.

"A much more sustainable version has reached a working state. I’m still not happy with some of the formatting but it’s available on my personal repository if you want to try it out. To use it you will have to build ImGui yourself as a library."

• [1.0.0] C++ API bindings BindBC/bindbc-imgui#2 (comment)

[kassane]

zimgui is generated by dear_bindings without custom-prefix ig and cimgui add custom-prefix ig.

Unfortunately the script does not support D. Although the syntax is similar to C it requires some changes to the code generator.

Currently, to speed up the C => D translation process using importC use this command:

# Add C headers in source.c
$ ldmd2/ldc2 -P-I<c include> source.c -o- -Hf=source.d

• -o-: no object generated
• -Hf=: generate D file
• -H: stdout print gen .di file, only -HC stdout print (D => C++)

I don't know if it would be interesting and practical to adapt or create a complementary script to translate code C => D, parsing and wrapped in dcimgui.

[kassane]

copying comments manually is so tedious! 😭

#51 fix 'size_t' matches conflicting symbols (see hidden comments), explained in #50

---edit

Sometimes get build error, if imgui (wasm32) buildstep run before emsdk_setup (requires assert.h)!

cc: @floooh

[kassane]

Changed: https://sokol-d.dpldocs.info/imgui.html