ImGui new thread

pie · March 7

@MoKaLux thank you, this might be related, but I am not using Texture directly.
I guess that ImGui does something similar when it builds the FontAtlas, unfortunately I didn't see an exposed setting to extend its texture to a power of two (or to not do it)

keszegh · April 4

it would be great to have freetype rendering option in gideros imgui, see
https://github.com/ocornut/imgui/tree/master/misc/freetype

keszegh · May 11

better here:

@rrraptor why was the padding option removed from imageButton?

"Changed ImGui:imageButton(texture, w, h [, padding = -1, tint_color = 0xffffff, tint_alpha = 1, border_color = 0xffffff, border_alpha = 0]) to ImGui:imageButton(str_id, texture, w, h [, tint_color = 0xffffff, tint_alpha = 1, border_color = 0xffffff, border_alpha = 0])"

for all my imagebuttons padding was set to 0 but now it is impossible or much more complicated to set it with pushstyle before each of them (if that works, i did not check).

keszegh · May 11

~~setting bg color does not work for me in imageButtonScaled, can you check it?~~
never mind, my args where on the wrong place.

rrraptor · May 13

keszegh said:
better here:

@rrraptor why was the padding option removed from imageButton?

"Changed ImGui:imageButton(texture, w, h [, padding = -1, tint_color = 0xffffff, tint_alpha = 1, border_color = 0xffffff, border_alpha = 0]) to ImGui:imageButton(str_id, texture, w, h [, tint_color = 0xffffff, tint_alpha = 1, border_color = 0xffffff, border_alpha = 0])"

for all my imagebuttons padding was set to 0 but now it is impossible or much more complicated to set it with pushstyle before each of them (if that works, i did not check).

I have no idea, devs changed it in 1.89
https://github.com/ocornut/imgui/releases/tag/v1.89
Maybe I can bring it back...?

rrraptor · May 13

keszegh said:
it would be great to have freetype rendering option in gideros imgui, see
https://github.com/ocornut/imgui/tree/master/misc/freetype

It cant be an option. Its either freetype or truetype.

keszegh · May 13

rrraptor said:

I have no idea, devs changed it in 1.89
https://github.com/ocornut/imgui/releases/tag/v1.89
Maybe I can bring it back...?

i've replaced all occurrence with my padded variant of scaledimagebutton, yet it takes like 10 more arguments so much less clean (i could remove them from my variant though, as i anyway don't use them). all in all for me it does not matter much anymore.

keszegh · May 13

rrraptor said:

keszegh said:
it would be great to have freetype rendering option in gideros imgui, see
https://github.com/ocornut/imgui/tree/master/misc/freetype
It cant be an option. Its either freetype or truetype.

you mean it has to be set when gideros is built?

rrraptor · May 13

keszegh said:

rrraptor said:

keszegh said:
it would be great to have freetype rendering option in gideros imgui, see
https://github.com/ocornut/imgui/tree/master/misc/freetype
It cant be an option. Its either freetype or truetype.
you mean it has to be set when gideros is built?

Yes. Maybe we can have 2 versions of imgui and in plugin options (inside gideros) choose what you need. But I dont know how to implement this feature... @hgy29 can tell us

keszegh said:

rrraptor said:

I have no idea, devs changed it in 1.89
https://github.com/ocornut/imgui/releases/tag/v1.89
Maybe I can bring it back...?
i've replaced all occurrence with my padded variant of scaledimagebutton, yet it takes like 10 more arguments so much less clean (i could remove them from my variant though, as i anyway don't use them). all in all for me it does not matter much anymore.

I am also thinking of changing custom "scaledImageButton" functions the same way. What do you think?)

keszegh · May 13

what do you mean by same? can you share old syntax vs proposed syntax?

rrraptor · May 13

keszegh said:
what do you mean by same? can you share old syntax vs proposed syntax?

Add str_id as first argument.
Before:

ImGui:scaledImage(texture, w, h ...)
ImGui:scaledImageButton(texture, w, h ...)

After:

ImGui:scaledImage(str_id, texture, w, h ...)
ImGui:scaledImageButton(str_id, texture, w, h ...)

keszegh · May 13

ah yes, sure, that's useful, so far i needed to push/pop id's all the time.

pie · May 21

@rrraptor is it possibile to wrap this workaround to scroll on touch in imgui gideros without breaking everything else? I think it is a nice feature for mobile, but I am not sure about its implications

https://github.com/ocornut/imgui/issues/3379

Thank you

rrraptor · May 21

pie said:
@rrraptor is it possibile to wrap this workaround to scroll on touch in imgui gideros without breaking everything else? I think it is a nice feature for mobile, but I am not sure about its implications

https://github.com/ocornut/imgui/issues/3379

Thank you

Since its just a function, I can add this.
Edit:
Or you want to add this into "endWindow"/"endChild" functions?

pie · May 21

Thank you, I have no preferences on that matter, I would stick to the easiest approach that makes it usable when needeed

keszegh · June 28

@rrraptor ,probably for consistency ImGui:scaledImageButtonWithText should also be starting with an id, no?

rrraptor · June 29

keszegh said:
@rrraptor ,probably for consistency ImGui:scaledImageButtonWithText should also be starting with an id, no?

Label is your ID, you can add anything after "##" and it wont be displayed. So you can do this:

for i = 1, 3 do
   ui:scaledImageButtonWithText(myTexture, `Name##{i}`, ...)
end

keszegh · June 29

i see, won't it be more consistent in this case with the rest of the function syntaxes to exchange first two parameters?
(checkboxes are like that too i think, where their label is also shown and is the first parameter)

pie · July 10

Hi @rrraptor I am trying ImGuiTextFilter for the first time, and I wonder how (if it's possible) to avoid fuzzy search and approach the filter as "beginning of word"+wildcard (or the word itself).
ie. search for "ti" should get: time, timing, timetable, titan, tito... but shouldn't get: monotime, pathetic, antithetic ... do I make sense?

thank you

rrraptor · July 11

pie said:
Hi @rrraptor I am trying ImGuiTextFilter for the first time, and I wonder how (if it's possible) to avoid fuzzy search and approach the filter as "beginning of word"+wildcard (or the word itself).
ie. search for "ti" should get: time, timing, timetable, titan, tito... but shouldn't get: monotime, pathetic, antithetic ... do I make sense?
thank you

I dont think it is possible by default

pie · August 23

rrraptor said:

pie said:
@rrraptor is it possibile to wrap this workaround to scroll on touch in imgui gideros without breaking everything else? I think it is a nice feature for mobile, but I am not sure about its implications

https://github.com/ocornut/imgui/issues/3379

Thank you
Since its just a function, I can add this.
Edit:
Or you want to add this into "endWindow"/"endChild" functions?

I finally managed to try it and I have a question:
I am writing this inside a beginWindow, before EndWindow

local mouse_delta_x, mouse_delta_y = IO:getMouseDelta()
ui:scrollWhenDragging(0, -mouse_delta_y) --the first is 0 because I want only vertical scrolling

based on the documentation I should put only 2 parameters (x, y) but as soon as my app reach that point I get this error:

missing argument #4 to 'scrollWhenDragging' (number expected)
which number should I give it?
Thank you again @rrraptor

MoKaLux · August 23

pie according to GH:
https://github.com/gideros/gideros/blob/6265acd33ab1163b13dbce06bed91bfa0b74904c/plugins/imgui/source/Common/imgui_user.h#L71

IMGUI_API void ScrollWhenDragging(float dx, float dy, ImGuiMouseButton mouse_button);

and
https://github.com/gideros/gideros/blob/6265acd33ab1163b13dbce06bed91bfa0b74904c/plugins/imgui/source/Common/imgui_user.cpp#L547

	void ScrollWhenDragging(float dx, float dy, ImGuiMouseButton mouse_button)

I don't know if mouse_button is optional or not, plus I don't know which value it should be

Sorry I cannot help further

pie · August 24

@MoKaLux thank you might have helped:I tried hardcoding some mouse button values but without success so far

MoKaLux · August 24

hope sir rrraptor will be around soon

rrraptor · August 29

@pie

ui:beginChild('as') -- any begin state
for i = 1, 100 do 
	ui:text(`Item #{i}`)
end
-- 0: horizontal speed
-- -1: vertical speed (+1 to reverse scrolling)
-- 1: LMB (2 for RMB and I guess 4 for MMB, I dont have enums for these in ImGui for some reason...)
ui:scrollWhenDragging(0, -1, 1)
ui:endChild() -- any end state

pie · September 4

rrraptor said:

@pie

ui:beginChild('as') -- any begin state
for i = 1, 100 do 
	ui:text(`Item #{i}`)
end
-- 0: horizontal speed
-- -1: vertical speed (+1 to reverse scrolling)
-- 1: LMB (2 for RMB and I guess 4 for MMB, I dont have enums for these in ImGui for some reason...)
ui:scrollWhenDragging(0, -1, 1)
ui:endChild() -- any end state

Thank you a lot @rrraptor !

While it works perfectly on pc I have a small issue on android, like as if it won't take the current screen offset, and reset the screen scroll-position on every new touch.

See this in action on android player: I've added a big scrollbar to see it better.

Thank you again!

EDIT: I guess this is the same issue: https://github.com/ocornut/imgui/issues/3379#issuecomment-879900513

application:setBackgroundColor(0x323232)
 
require "ImGui"
 
 
 
 
local ui = ImGui.new(nil, false, true, false) 
local IO = ui:getIO()
 
 
 
 
 
function onWindowResize(rt)
	local minX, minY, maxX, maxY = application:getLogicalBounds()
 
	local sx = application:getLogicalScaleX()
	local sy = application:getLogicalScaleY()
 
	ui:setScale(1 / sx, 1 / sy)
	-- move UI to top left corner
	ui:setPosition(minX, minY)
	-- resize display area
	IO:setDisplaySize((maxX - minX) * sx, (maxY - minY) * sy)
 
	if rt then
		rt = {
			x  = minX,
			X  = maxX,
			y  = minY,
			Y  = maxY,
			Sx = sx,
			Sy = sy,
			w  = (maxX - minX) * sx,
			h  = (maxY - minY) * sy
		}
		return rt
	end
end
 
ss = onWindowResize(true)
 
 
function DrawWindow(ui)
		ui:pushStyleVar(ImGui.StyleVar_ScrollbarSize, ss.w/10)
		ui:setNextWindowSize(ss.w, ss.h)
		ui:setNextWindowPos(ss.x, ss.y)
		local container = ui:beginWindow(
			"Window02", --title
			nil,  -- no close button
			ImGui.WindowFlags_NoCollapse | ImGui.WindowFlags_NoResize | ImGui.WindowFlags_NoBringToFrontOnFocus | ImGui.WindowFlags_NoMove |ImGui.WindowFlags_AlwaysVerticalScrollbar
			)
 
 
 
			for i = 1, 1000 do 
				ui:text(`Item #{i}`)
			end
			-- 0: horizontal speed
			-- -1: vertical speed (+1 to reverse scrolling)
			-- 1: LMB (2 for RMB and I guess 4 for MMB, I dont have enums for these in ImGui for some reason...)
			ui:scrollWhenDragging(0, -1, 1)
 
 
		ui:endWindow()
		ui:popStyleVar()
 
end
 
local function onDrawGui(e)
	ui:newFrame(e.deltaTime)
 
	DrawWindow(ui)
 
	print("test")
	ui:updateCursor()
	ui:render()
	ui:endFrame()
end
 
 
onWindowResize()
 
 
 
 
function onTouch(event)               
  local IO=IO    
	if event.type=="mouseWheel" then      
    IO:setMouseWheel(event.wheel/300)
    IO:setMousePos(event.x,event.y)            
    return    
  end
  if event.type=="mouseHover" then      
    IO:setMousePos(event.x,event.y)        
    return    
  end
  local xGui=event.touch.x
  local yGui=event.touch.y
  IO:setMousePos(xGui,yGui) 
  guiHasMouse=IO:wantCaptureMouse()   
if event.type=="touchesBegin" then           
	if event.touch.mouseButton==0 then event.touch.mouseButton=1 end	 --workaround
    IO:setMouseDown(event.touch.mouseButton, true)                       
  end
  if event.type=="touchesMove" then           
  end
  if event.type=="touchesEnd" then        
	  if event.touch.mouseButton==0 then event.touch.mouseButton=1 end     --workaround
    IO:setMouseDown(event.touch.mouseButton, false)           
    IO:setMouseDown(2, false)  --for safety, sometimes right-click got `stuck' 
  end     
 
  guiHasMouse=IO:wantCaptureMouse()  
  if guiHasMouse then return end
 end
 
stage:addEventListener(Event.TOUCHES_BEGIN, onTouch,self)
stage:addEventListener(Event.TOUCHES_MOVE, onTouch,self)  
stage:addEventListener(Event.TOUCHES_END, onTouch,self)
stage:addEventListener(Event.TOUCHES_CANCEL, onTouch,self)
stage:addEventListener(Event.MOUSE_HOVER, onTouch,self)
stage:addEventListener(Event.MOUSE_WHEEL, onTouch,self)
 
 
stage:addEventListener("enterFrame", onDrawGui)
stage:addEventListener("applicationResize", onWindowResize)
 
 
stage:addChild(ui)

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