imGui bindings

rrraptor · September 2020

keszegh said:
isn't there some bug? my code stopped working, crashes immediately. even if i delete everything between newframe and endframe, it crashes.

Because of ImGui constructor maybe...? I forgot to mention that I removed 3d argument (fonts). It is now separated function.

ImGui.new([width, height])

Or some fonts related code

keszegh · September 2020

the code that crashes:

 
require "ImGui_beta"
imgui = ImGui.new(nil,nil)
 
stage:addChild(imgui)
 
function enterFrame(e)
 
	imgui:newFrame(e)	
        imgui:endFrame()
        imgui:render()
end
 
 
stage:addEventListener("mouseDown", function(e) imgui:onMouseDown(e) end)
stage:addEventListener("mouseUp", function(e) imgui:onMouseUp(e) end)
stage:addEventListener("mouseHover", function(e) imgui:onMouseHover(e) end)
stage:addEventListener("mouseMove", function(e) imgui:onMouseMove(e) end)
stage:addEventListener("mouseWheel", function(e) imgui:onMouseWheel(e) end)
stage:addEventListener("keyDown", function(e) imgui:onKeyDown(e) end)
stage:addEventListener("keyUp", function(e) imgui:onKeyUp(e) end)
stage:addEventListener("keyChar", function(e) imgui:onKeyChar(e) end)
stage:addEventListener("enterFrame", enterFrame)

rrraptor · September 2020

It should be due to new fonts API

Seems like I accidentally commented out texture creation process during the imgui initialization. You can fix it like this for now.

imgui:getIO():getFonts():bake()

rrraptor · September 2020

Fixed ~~(only in master branch)~~.

1 more example:

local imgui = ImGui.new()
stage:addChild(imgui)
 
local IO = imgui:getIO()
local fonts = IO:getFonts()	
 
fonts:addFonts{
	{"fonts/DroidSans.ttf", 16},	 -- 1
	{"fonts/Karla-Regular.ttf", 16}, -- 2
	{"fonts/ProggyTiny.ttf", 16},	 -- 3
	{"fonts/aliee13.ttf", 16},	 -- 4
}
 
local karlaRegular = fonts:getFont(2)
local defaultFont = fonts:getFont() -- or font:getFont(nil)
IO:setFontDefault(karlaRegular)
fonts:bake() -- update imgui atlas texture

keszegh · September 2020

main.lua:276: attempt to call method 'getStyleColor' (a nil value)

rrraptor · September 2020

Use

local style = imgui:getStyle()
style:getColor(...)

keszegh · September 2020

ty. API needs to be updated too then.

rrraptor · September 2020

keszegh said:
ty. API needs to be updated too then.

It is...?

https://github.com/MultiPain/Gideros_ImGui#style-settersgetters

keszegh · September 2020

this line is wrong in API i guess:

color, alpha = ImGui:getStyleColor(ImGuiCol)

keszegh · September 2020

(actually i would have left both ways available to be as similar to original imgui api as possible)

rrraptor · September 2020

Ok, added "getStyleColor" back

keszegh · September 2020

i need some help to use dockbuilder, where can i read how to use the api?
i tried

dockspace_id=1
	imgui:dockBuilderRemoveNode(dockspace_id)
	imgui:dockBuilderAddNode(dockspace_id)	
	imgui:dockBuilderSetNodeSize(dockspace_id,370, application:getDeviceHeight()-27)
	ImGui:dockBuilderSetNodePos(dockspace_id,application:getDeviceHeight()-370, 0)	
	dock_main_id = dockspace_id
	imgui:dockBuilderSplitNode(dock_main_id, ImGui.Dir_Up, 0.05, 2, 3)			
	imgui:dockBuilderDockWindow("FX", 2)
	imgui:dockBuilderDockWindow("Project", 3)
 
	imgui:dockBuilderFinish(dockspace_id)

which works but i'm unable to split further the nodes.
also, i don't really understand the last two parameters of splitNode function.
also, is there a way to make a subnode of fixed size and not ratio?

rrraptor · September 2020

keszegh said:
i need some help to use dockbuilder, where can i read how to use the api?
i tried
dockspace_id=1
	imgui:dockBuilderRemoveNode(dockspace_id)
	imgui:dockBuilderAddNode(dockspace_id)	
	imgui:dockBuilderSetNodeSize(dockspace_id,370, application:getDeviceHeight()-27)
	ImGui:dockBuilderSetNodePos(dockspace_id,application:getDeviceHeight()-370, 0)	
	dock_main_id = dockspace_id
	imgui:dockBuilderSplitNode(dock_main_id, ImGui.Dir_Up, 0.05, 2, 3)			
	imgui:dockBuilderDockWindow("FX", 2)
	imgui:dockBuilderDockWindow("Project", 3)
 
	imgui:dockBuilderFinish(dockspace_id)
which works but i'm unable to split further the nodes.
also, i don't really understand the last two parameters of splitNode function.
also, is there a way to make a subnode of fixed size and not ratio?

I have no idea how to work with dockbuilder.
last 2 is ImGui.Dir_Left or ImGui.Dir_Right etc.

keszegh · September 2020

aren't they some kind of ids?

rrraptor · September 2020

https://github.com/ocornut/imgui/blob/770c99536533923d2cf07fc5004c752ef2c63f5c/imgui_internal.h#L2172

rrraptor · September 2020

oh, my bad

Ther are ids )))

rrraptor · September 2020

Small update (do not have much free time, sry

).
Added internal event listeners.

Now you can safly remove this part of code:

stage:addEventListener("mouseDown", function(e) imgui:onMouseDown(e) end)
stage:addEventListener("mouseUp", function(e) imgui:onMouseUp(e) end)
stage:addEventListener("mouseHover", function(e) imgui:onMouseHover(e) end)
stage:addEventListener("mouseMove", function(e) imgui:onMouseMove(e) end)
stage:addEventListener("mouseWheel", function(e) imgui:onMouseWheel(e) end)
stage:addEventListener("keyDown", function(e) imgui:onKeyDown(e) end)
stage:addEventListener("keyUp", function(e) imgui:onKeyUp(e) end)
stage:addEventListener("keyChar", function(e) imgui:onKeyChar(e) end)

But if you still want to use this method, then I recommend you to call "imgui:removeAllListeners()".

So minimal example looks like this:

require "ImGui"
imgui = ImGui.new()
stage:addChild(imgui)
 
function enterFrame(e)
	imgui:newFrame(e)
 
	imgui:showDemoWindow()
 
	imgui:render()
	imgui:endFrame()
end
 
stage:addEventListener("enterFrame", enterFrame)

keszegh · September 2020

thanks, just yesterday i also got back to working with imgui.

keszegh · October 2020

finally i can export to html and mac, thanks.

one issue i spotted so far: it seems that ctrl+click on a slider does not work in html export.

rrraptor · October 2020

keszegh said:
finally i can export to html and mac, thanks.

one issue i spotted so fgar: it seems that ctrl+click on a slider does not work in html export.

Can you check if this works:

stage:addEventListener(Event.KEY_DOWN, function(e)
	local mod = application:getKeyboardModifiers()
	print("CRTL: ", (mod & KeyCode.MODIFIER_CTRL) > 0)
end)
 
stage:addEventListener(Event.KEY_UP, function(e)
	local mod = application:getKeyboardModifiers()
	print("CRTL: ", (mod & KeyCode.MODIFIER_CTRL) > 0)
end)

If it does not then it is HTML export problem.

keszegh · October 2020

it does not. i sent pm too.

rrraptor · October 2020

So, I guess @hgy29 can tell us something?

P.S. event listeners:
https://github.com/MultiPain/Gideros_ImGui/blob/8890ce8fd6f097d524e482dd89f26f839a4b7e09/main.cpp#L835
https://github.com/MultiPain/Gideros_ImGui/blob/8890ce8fd6f097d524e482dd89f26f839a4b7e09/main.cpp#L753
Key maping:
https://github.com/MultiPain/Gideros_ImGui/blob/8890ce8fd6f097d524e482dd89f26f839a4b7e09/main.cpp#L959

hgy29 · October 2020

Unfortunately application:getKeyboardModifiers() isn't supported on HTML

keszegh · October 2020

can it be?

rrraptor · October 2020

hgy29 said:
Unfortunately application:getKeyboardModifiers() isn't supported on HTML

So, it is impossible to detect ctrl key?

hgy29 · October 2020

Maybe by tracking onKeyDown/onKeyUp events ?

EDIT: According to this: https://stackoverflow.com/questions/13539493/how-to-detect-keyboard-modifier-ctrl-or-shift-through-javascript, tracking key events is the way to go on HTML, however it will fail if some control key is pressed while the browser isn't focused

hgy29 · October 2020

BTW as far as I know, getKeyboardModifiers is only implemented on desktop (QT-based exports)

keszegh · October 2020

it's useful though, so could be done for all exports.

keszegh · October 2020

also when compiling i have this error although it still compiles seemingly fine:
C:\Program Files (x86)\Gideros\Tools\luac.exe: API.lua:8: '+=','-=','*=', '/=', '%=', '^=', '=' expected near 'ImGui'

SinisterSoft · October 2020

Maybe it could be simulated, but Gideros wouldn't know if you entered it with it pressed or not - or if you pressed it, left and came back with it unpressed, it would think it was pressed.

Howdy, Stranger!

Categories

In this Discussion

Top Posters

imGui bindings

Comments

Howdy, Stranger!

Quick Links

Categories

In this Discussion

Top Posters

imGui bindings

Comments