hotloading... does it work? can it be documented? about cimgui.jl HOT 10 CLOSED

➜  ~ cat ImageCompare.jl 
module ImageCompare
    using CImGui

    #@run include(joinpath(pathof(CImGui), "..", "..", "demo", "demo.jl"))
    #@run include(joinpath(pathof(CImGui), "..", "..", "examples", "demo.jl"))
    include(joinpath(pathof(CImGui), "..", "..", "examples", "Renderer.jl"))
    using .Renderer

    function ui()
        CImGui.Begin("Hello ImGui!")
        CImGui.Button("My Button") && @show "triggered"
        CImGui.End()
        CImGui.ShowMetricsWindow()
    end

    function test()
        # Default: without hotloading

        # Renderer.render(title = "IMGUI Window") do
        #     CImGui.Begin("Hello ImGui")
        #     CImGui.Button("My Button") && @show "triggered"
        #     CImGui.End()
        #     CImGui.ShowMetricsWindow()
        # end

        Renderer.render(ui, title = "IMGUI Window", hotloading=true)
    end
    export test
end
➜  ~ julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.5.3 (2020-11-09)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> includet("ImageCompare.jl")
WARNING: replacing module Renderer.

julia> using .ImageCompare

julia> test()
Task (runnable) @0x00000001139918d0

shell> vim ImageCompare.jl

julia> revise()

shell> cat ImageCompare.jl
module ImageCompare
    using CImGui

    #@run include(joinpath(pathof(CImGui), "..", "..", "demo", "demo.jl"))
    #@run include(joinpath(pathof(CImGui), "..", "..", "examples", "demo.jl"))
    include(joinpath(pathof(CImGui), "..", "..", "examples", "Renderer.jl"))
    using .Renderer

    function ui()
        CImGui.Begin("Hello ImGui again!")
        CImGui.Button("My Button") && @show "triggered"
        CImGui.End()
        CImGui.ShowMetricsWindow()
    end

    function test()
        # Default: without hotloading

        # Renderer.render(title = "IMGUI Window") do
        #     CImGui.Begin("Hello ImGui")
        #     CImGui.Button("My Button") && @show "triggered"
        #     CImGui.End()
        #     CImGui.ShowMetricsWindow()
        # end

        Renderer.render(ui, title = "IMGUI Window", hotloading=true)
    end
    export test
end

using CImGui
include(joinpath(pathof(CImGui), "..", "..", "examples", "Renderer.jl"))
using .Renderer

mutable struct MyStates
    arr::Vector{Cfloat}
    is_stop::Bool
end

# nothing special, just a simple initialization 
state_holder = MyStates(Cfloat[sin(x) for x in 0:0.01:2pi], false) 

# this method is left intact
update!(arr) = foreach(1:50:600) do i
    arr[i] = sin(time()+i)
end
# we only need to add a helper method for multiple dispatch
update!(state::MyStates) = update!(state.arr)

# this is the UI function, whenever the structure of `MyStates` is changed, 
# the corresponding changes should be applied
function ui(state::MyStates)
    CImGui.Begin("Hello ImGui")
        CImGui.PlotLines("sine wave", state.arr, length(state.arr))
    CImGui.End()
end

# automatically set the flag when the function gets invoked
function infinite_loop(state::MyStates)
    state.is_stop = false
    @async while true
        state.is_stop && break
        update!(state)
        yield()
    end
end

Renderer.render(()->ui(state_holder), width = 360, height = 480, title = "A simple UI")
infinite_loop(state_holder)