ImGui new thread

keszegh · May 2022

my test session is still pending, sorry.
btw does the imgui plugin work with the non-qt destop export as well?

keszegh · May 2022

so finally i can test.
in new version left click is not registered for me. i use it manually, that is i set
self.imgui = ImGui.new(nil, false, true, false).

and then in onTouch function i do basically:
if event.type=="touchesBegin" then
IO:setMouseDown(event.touch.mouseButton-1, true)
end

this worked before but does not work now. how should i change the syntax?

rrraptor · May 2022

keszegh said:
this worked before but does not work now. how should i change the syntax?

Remove "-1"

keszegh · May 2022

rrraptor said:

keszegh said:
this worked before but does not work now. how should i change the syntax?
Remove "-1"

thanks, this works. so far so good, i will make more testing about my various gui elements (There are many, so it will be a good test for imgui in general).

keszegh · May 2022

ctrl+tab i use for my own aims but imgui also triggers some main menu related event when this is pressed. how to disable this?
i tried
IO:setConfigFlags(ImGui.ConfigFlags_None)
but it did not seem to make a difference.
ty

rrraptor · May 2022

keszegh said:
ctrl+tab i use for my own aims but imgui also triggers some main menu related event when this is pressed. how to disable this?
i tried
IO:setConfigFlags(ImGui.ConfigFlags_None)
but it did not seem to make a difference.
ty

Try to add "ImGui.WindowFlags_NoNavFocus" to all windows except for popups?

keszegh · May 2022

@rrraptor , that is a bit tedious, isn't there something simpler?
here is ascreenshot what window appears when i press ctrl+tab.

keszegh · May 2022

actually ImGui.WindowFlags_NoNav is added to all of them, shouldn't this be enough?

keszegh · May 2022

i've added noNavFocus to all windows, but this 'main menu bar' window still appears when ctrl+Tab is pressed.

rrraptor · May 2022

I guess there is no way then? I cant see anything in source code that can help...

rrraptor · May 2022

Actually, adding "ImGui.WindowFlags_NoInputs" works for me, but it will break: CTRL + click on sliders/drags, textinputs, etc

keszegh · May 2022

hmm, i used ctrl+click though.

keszegh · May 2022

there are these threads, i don't know if they have any l anything helpful.
https://github.com/ocornut/imgui/issues/3255

rrraptor · May 2022

keszegh said:
there are these threads, i don't know if they have any l anything helpful.
https://github.com/ocornut/imgui/issues/3255

It is true that you had to use "ImGuiConfigFlags_NavEnableKeyboard" BEFORE 1.87, but now, there is no way I think. Only if I change "tab" key to something else in imgui source code.

keszegh · May 2022

cannot i disable keyboard in any way now?

keszegh · May 2022

so this ctlr+Tab think is completely annoying. it's hard to believe that it cannot be disabled. currently all my windows have nonav set so when ctrl+tab is pressed, it does not switch in fact between any of the windows, ONLY pops up that stupid window from my screenshot with the list of possible windows, where only "(main menu bar)" is listed. perhaps if i could also set main menu bar to be 'nonav' then this would effectively disable this feature? but how could i do this?

i think this popup window with list of windows is quite unorthodox to guis so there should be at least some way to disable this. the switching between windows feature is less of an issue, as it does not switch between anything anyway at the end, as every window has this feature disabled.

keszegh · May 2022

i disabled the main menu, and even then the list window appears when ctrl+tab is pressed, only it is completely empty now. that's crazy.

keszegh · May 2022

as even you @rrraptor did not know about a solution, i did ask it here, let's hope some fix is possible:
https://github.com/ocornut/imgui/issues/4828

rrraptor · May 2022

As a work around you can do this after "newFrame()" call:

if (ui:isKeyPressed(KeyCode.TAB) and ui:isKeyDown(KeyCode.CTRL)) then 
	IO:setModKeysDown(KeyCode.MODIFIER_CTRL, false)
end

It does not solves the problem, but atleast removes the popup.

keszegh · May 2022

rrraptor said:
As a work around you can do this after "newFrame()" call:
if (ui:isKeyPressed(KeyCode.TAB) and ui:isKeyDown(KeyCode.CTRL)) then 
	IO:setModKeysDown(KeyCode.MODIFIER_CTRL, false)
end
It does not solves the problem, but atleast removes the popup.

this seems to work, thanks a lot.

keszegh · May 2022

@rrraptor , i have noticed one more thing that worked in old version but is strange now. i had the following code to put a triangle in the topright of certain items (each name in a scrollable list of files):

function ImGui:showRightClickableSign(x,y)  
  local x0,y0=self:getItemRectMin()      
  local x1,y1=self:getItemRectMax()      
  if x then x1=x y0=y end
  local draw_list = self:getWindowDrawList()            
  draw_list:addTriangleFilled(x1-1,y0+1,x1-4,y0+1,x1-1,y0+4, 0xe5e5e5) 
end

calling this right after creating the item worked fine before. now when not scrolled to the bottom, the triangles are positioned too much to the right, and thus barely visible. see attachments:
-old version looking good:

-new version good when scrolled down:

-new version bad when not scrolled down:

rrraptor · May 2022

@keszegh maybe its something on your side? I have no problems with this code

rrraptor · May 2022

Actually, I just tried this with "ImGui:selectable()" and the result is different:

On top - button, on the bottom - selectable, red rectangle - area given by "getItemRectMin" & "getItemRectMax". There was no changes to this functions on my side, so idk why it works like this now...

keszegh · May 2022

rrraptor said:
Actually, I just tried this with "ImGui:selectable()" and the result is different:

On top - button, on the bottom - selectable, red rectangle - area given by "getItemRectMin" & "getItemRectMax". There was no changes to this functions on my side, so idk why it works like this now...

yes, i use a selectable. and indeed my triangle is already smaller but the bigger issue is that when scrolling, it changes/disappears. any workarounds? what should i use instead of getitemrectmax?

btw for ctrl+tab there might be a disable option in later versions, see
https://github.com/ocornut/imgui/issues/4828

keszegh · May 2022

maybe there is some new kind of margin/padding option in new version?

rrraptor · May 2022

keszegh said:
maybe there is some new kind of margin/padding option in new version?

I cant find anything related to this problem...

keszegh · May 2022

@rrraptor , me neither, i wish they'd have a similar forum, as making issues for everything is very tedious and overkill. gideros is best (and i hope you will find a solution yet again).

keszegh · May 2022

@rrraptor , if there hope that you can find a solution for the wrong itemrect size?

rrraptor · May 2022

keszegh said:
@rrraptor , if there hope that you can find a solution for the wrong itemrect size?

https://github.com/ocornut/imgui/issues/5346

Temporarily solution:

function ImGui:showRightClickableSign()  
	local draw_list = self:getWindowDrawList()
	local x0, y0 = self:getItemRectMin()
	local x1, y1 = self:getItemRectMax()
	local cx0 = draw_list:getClipRectMin()
	local cx1 = draw_list:getClipRectMax()
	x0 = math.clamp(x0, cx0, cx1)
	x1 = math.clamp(x1, cx0, cx1)
 
	local offset = 1
	local size = 8
 
	draw_list:addTriangleFilled(x1-offset,y0+offset,x1-size,y0+offset,x1-offset,y0+size, 0xe5e5e5) 
end

keszegh · May 2022

@rrraptor thanks, this does the job. hopefully we can have the simpler solution back sometime (although hopefully not much a speed difference it makes when rendering 100 such triangles).

btw math.clamp is undocumented in gideros wiki. @MoKaLux i know you are the best to mention this to.

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