cimgui-go Migration

[gucio321]

Hi there!
Here is my proposal of a simple way to migrate from imgui-go to cimgui-go.
I'm using regular expressions within a simple shell script.
As I finish this, I'll try to keep it up to data and uptade to the latest cimgui-go (when available)

NOTE - this .sh script is really primitive - it is just a set of sed calls on various files in the project.

progress

• bug in font atlas - causes strange panic
• Single Window doesn't work anymore
• giu theme is broken
• textures does not work
  • plain image
  • image from file
  • image from URL
• some examples don't compile
• fix workflows
• some MasterWindow methods dono't have their implementation in cimgui-go backend: export methods cimgui-go#169, backend: PollEvents and WaitForEvents cimgui-go#195
  • SetSize
  • SetCloseCallback
  • SetDropCallback (ref: glfw: export Drop callback cimgui-go#145)
  • SetIcon
  • SetSizeLimit
  • SetTitle
  • SetShouldClose
  • InputHandler
  • GetPos
• Font Atlas is broken (examples/multiplefonts) (panic when closing demo)
• broken example examples/hugelist (segfault)
• Implement stuff in Plot.go (many TODOs)
• implement content scaling

conversion list

list is currently outdated - I'm fixing all bugs manually now

the list above shows, which files (after running migrate.sh) does not have any build errors:

• Alignment.go
• build_windows.go
• Canvas.go
• ClickableWidgets.go (NOTE: need to fix ImageButton)
• CodeEditor.go (disabled)
• Context.go
• Context_test.go
• CSS.go
• Direction.go
• doc.go
• EventHandler.go
• Events.go (fix Keycode first)
• examples
• ExtraWidgets.go
• Flags.go (NOTE fix ColorEditFlags)
• FontAtlasProsessor.go (platform and renderer dependency; cannot resolve some reference)
• ImageWidgets.go (platform dependency - probably will fix manually)
• InputHandler.go
• InputHandler_test.go
• Keycode.go
• Layout.go
• Layout_test.go
• ListClipper.go
• Markdown.go (disabled)
• MasterWindow.go
• MemoryEditor.go (disabled)
• Msgbox.go
• Plot.go
• Popups.go
• ProgressIndicator.go
• SliderWidgets.go
• SplitLayout.go
• StackWidget.go
• Style.go
• StyleIDs.go
• StyleIDs_string2enum.go
• StyleIDs_string.go
• StyleSetter.go
• TableWidgets.go
• TextureFilters.go (I'm not actually sure what these constants reffers to - no typed)
• Texture.go (it's not really clear to me but I suppose giu wraps a wrong type atm - cimgui.ImGuiTextureID vs cimgui.Texture)
• TextWidgets.go
• Utils.go
• Utils_test.go
• Widgets.go (problemm with ColorEditWidget - api has changed a bit; also see TODOs in migration.sh)
• Window.go (problem with platform stuff)

* files tagged with (disabled) are commented-out because they are not supported by cimgui-go

[AllenDang]

Great progress!

[gucio321]

UPDATE

Now I'm working on implementation of Markdown widget (see cimmarkdown)

[Chillance]

I had no idea this was such a huge effort. And it seems to keep add things... Is there any way some things could be fixes after merging this?

[gucio321]

Yes. I can merge the current state to master (it mostly works) and keep adding missing things

• code editor
• markdown editor
• some plots

[AllenDang]

Yes. I can merge the current state to master (it mostly works) and keep adding missing things

• code editor
• markdown editor
• some plots

Thanks so much for your effort, I think we should do the migration now, with a new release, and add more fixes later.

[gucio321]

@AllenDang I'm going to perform the following actions:

• create release from current master
• create a clone of matter and call it e.g. imgui-go
• merge this to master

[Chillance]

Wow! This is big deal! Thank you all for your efforts!

[gucio321]

finally after.... 9.5 months 🎉