[imgui_node_editor] Can't set value for `Colors[StyleColor_*]` about imgui_bundle

[pthom]

Thanks for the proposition. I'm always happy to accept qualitative PRs :-)

In this case I had already started working on it, so I finished it.

Here is some more information if you want to contribute in a later: This kind of work requires to run the generator. There is some doc about it here: https://pthom.github.io/imgui_bundle/devel_docs/bindings.html, and here: https://pthom.github.io/litgen/litgen_book/00_00_intro.html

1. First I had to add some manual new methods in the node editor fork: pthom/imgui-node-editor@daccee1...cefbd3e#diff-805621e5151ef6f5b47901439963a38fa5a9f2bfb7dee7cb6a9f18116bb2fc9f (They are protected by this specific define: IMGUI_BUNDLE_PYTHON_API)

2. Then I had to add this specific define in the generator options, then rerun the generator: 7b61b6c

[pthom]

There is no way to access them as an array, but there is a way to set them:

    ed.push_style_color(ed.StyleColor.node_bg, ImVec4(0.2, 0.2, 0.2, 1.0))

[hugle]

But I see imgui style color is done correctly at:

imgui_bundle/bindings/imgui_bundle/imgui/__init__.pyi

Lines 7804 to 7811 in f9d61bf

	# python adapter for ImGuiStyle::Colors[ImGuiCol_COUNT]
	# You can query and modify those values (0 <= idxColor < Col_.count)
	# inline IMGUI_API ImVec4& Color_(size_t idxColor) { IM_ASSERT( (idxColor >=0) && (idxColor < ImGuiCol_COUNT)); return Colors[idxColor]; } /* original C++ signature */
	def color_(self, idx_color: int) -> ImVec4:
	pass
	# inline IMGUI_API void SetColor_(size_t idxColor, ImVec4 color) { IM_ASSERT( (idxColor >=0) && (idxColor < ImGuiCol_COUNT)); Colors[idxColor] = color; } /* original C++ signature */
	def set_color_(self, idx_color: int, color: ImVec4) -> None:
	pass

Why not apply the same wrapper?

[hugle]

Or maybe, is the same way imgui does also applies to imgui_node_editor? If so, I could create a PR if you don't have capacity for this.

[hugle]

Cool, @pthom , thanks very much for the fast patch.