imGui bindings

rrraptor · August 2020

keszegh said:
thanks, so what should be XXXX?

See enums:

ImGui.WindowFlags_NoScrollWithMouse
ImGui.WindowFlags_None
ImGui.WindowFlags_NoScrollbar
ImGui.WindowFlags_HorizontalScrollbar
ImGui.WindowFlags_NoFocusOnAppearing
ImGui.WindowFlags_NoBringToFrontOnFocus
ImGui.WindowFlags_NoDecoration
ImGui.WindowFlags_NoCollapse
ImGui.WindowFlags_NoTitleBar
ImGui.WindowFlags_NoMove
ImGui.WindowFlags_NoInputs
ImGui.WindowFlags_NoMouseInputs
ImGui.WindowFlags_NoSavedSettings
ImGui.WindowFlags_NoNav
ImGui.WindowFlags_UnsavedDocument
ImGui.WindowFlags_NoNavFocus
ImGui.WindowFlags_AlwaysHorizontalScrollbar
ImGui.WindowFlags_AlwaysUseWindowPadding
ImGui.WindowFlags_NoNavInputs
ImGui.WindowFlags_NoResize
ImGui.WindowFlags_AlwaysVerticalScrollbar
ImGui.WindowFlags_MenuBar
ImGui.WindowFlags_NoBackground
ImGui.WindowFlags_AlwaysAutoResize

Or

https://github.com/ocornut/imgui/blob/4448734041bfff23c86dbc68dac88e69df112536/imgui.h#L794

keszegh · August 2020

@rrraptor , apparently there is no flag to disable close button. so is there another way?

rrraptor · August 2020

keszegh said:
@rrraptor , apparently there is no flag to disable close button. so is there another way?

I mean, I have changed "beginWindow" function

New dll on github.

local p_open,draw_f = true,true
 
function enterFrame(e)
	imgui:newFrame(e)
 
	if (imgui:beginWindow("No X 1")) then 
		if imgui:button("OPENUP 1") then p_open = true end
	end
	imgui:endWindow()
 
 
	if (imgui:beginWindow("No X 2", ImGui.WindowFlags_NoCollapse)) then 
		if imgui:button("OPENUP 2") then p_open = true end
	end
	imgui:endWindow()
 
 
	if (p_open) then 
		p_open,draw_f = imgui:beginWindow("Have X 1", p_open)
		if (draw_f) then 
			imgui:text("Hi3")
		end
		imgui:endWindow()
	end
 
	if (p_open) then 
		p_open,draw_f = imgui:beginWindow("Have X 2", p_open, ImGui.WindowFlags_NoCollapse)
		if (draw_f) then 
			imgui:text("Hi4")
		end
		imgui:endWindow()
	end
 
	imgui:endFrame()
	imgui:render()
end

keszegh · August 2020

thanks @rrraptor for the detailed example, now i think i got it, it's a bit misleading that second parameter is 'optional' and third parameter can take its place.

keszegh · August 2020

another question to hinder your progress:
it seems the app remembers previous settings, where are those stored? how can i set them manually? (e.g. to force a window to be not collapsed on startup even if it was collapsed at the end of last run of the app)

rrraptor · August 2020

keszegh said:
thanks @rrraptor for the detailed example, now i think i got it, it's a bit misleading that second parameter is 'optional' and third parameter can take its place.

I can remake this again

what about that:

draw_flag = imgui:beginWindow("NO X", nil, ImGui.WindowFlags_NoCollapse)

p_open, draw_flag = imgui:beginWindow("NO X", p_open, ImGui.WindowFlags_NoCollapse)

keszegh · August 2020

rrraptor said:
keszegh said:
@rrraptor , for the mirrored filled slider i need that the values are also reversed (that is, it goes from 100 to 0). i can set the range to 100,0 but strangely then i cannot pull it to to 0, the filledslider stops at 1.
Same for regular "sliderInt", so that is a bug in original ImGui code. I'll try to fix it.

Btw its ok for float slider
imgui:filledSliderFloat("test1", true, v1, 100, 0, "%.0f")

this is still a bug..

keszegh · August 2020

rrraptor said:
keszegh said:
thanks @rrraptor for the detailed example, now i think i got it, it's a bit misleading that second parameter is 'optional' and third parameter can take its place.
I can remake this again
what about that:
draw_flag = imgui:beginWindow("NO X", nil, ImGui.WindowFlags_NoCollapse)
p_open, draw_flag = imgui:beginWindow("NO X", p_open, ImGui.WindowFlags_NoCollapse)

the second isn't it rather a "HAVE X"?

rrraptor · August 2020

keszegh said:
this is still a bug..

I know, idk how to fix it, sorry. Ive create a bug report: https://github.com/ocornut/imgui/issues/3432

keszegh said:
another question to hinder your progress:
it seems the app remembers previous settings, where are those stored? how can i set them manually? (e.g. to force a window to be not collapsed on startup even if it was collapsed at the end of last run of the app)

Yes, it stores the settings somewhere in a file, but I don't know where yet. I haven't figured out this problem yet.

keszegh said:
the second isn't it rather a "HAVE X"?

Yes, you right

Copy pasta )))

rrraptor · August 2020

You can use ImGui.WindowFlags_NoSavedSettings for now

keszegh · August 2020

about the reversed range slider bug let's hope it will be fixed soon, imgui seems to be very actively deveoped and it must be easy to fix it on their side.

keszegh · August 2020

another question:
i try to change the uv mapping of an image on a button.
and for a start as i understand

imgui:imageButton(texture, w, h)

and

imgui:imageButton(texture, w, h  -1,  0xffffff, 1,  0xffffff, 0, 1, 1, 0, 0)

should do the same, right?
but they don't.
first, what tint value i need to have no effect on the image?
second, is this really the right uv values (1,1,0,0) that is the same as the default?

rrraptor · August 2020

keszegh said:
another question:
i try to change the uv mapping of an image on a button.
and for a start as i understand
imgui:imageButton(texture, w, h)
and
imgui:imageButton(texture, w, h  -1,  0xffffff, 1,  0xffffff, 0, 1, 1, 0, 0)
should do the same, right?

No. First is background color, second is tint color, so that

imgui:imageButton(texture, w, h, -1,  0xffffff, 0,  0xffffff, 1)

will do the trick

Or you can simply pass nil if it is an optional parameter and you dont know its default value or if its faster to type "nil" instead of "0xffffff"

keszegh said:
second, is this really the right uv values (1,1,0,0) that is the same as the default?

No. Gideros expects the texture with power of two (POT) size, and if your image is 256x256 then yes, uvs must be (1,1,0,0), but if it is not then its something like this:
(textureWidth / closestPOTWidth, textureHeight / closestPOTHeight, 0, 0) e.g. if your texture is 200x170 its uvs must be (200/256, 170/256, 0, 0).

I can make it so the formula will be (textureWidth / closestPOTWidth) * userUV1x where userUV1x is ur desired uv x coordinate. That makes more sense.

keszegh · August 2020

thanks, got it.

it was said that easiest to include images in widgets is to use custom fonts, yet setting fonts is not yet available apparently. i hope you will be able to add that too sometime.

keszegh · August 2020

still happily playing around with imgui. can you tell me how can i know if in a combo box an item was clicked on? (after which i wish to close the popup window which was opened only for this combo box)

rrraptor · August 2020

keszegh said:
thanks, got it.

it was said that easiest to include images in widgets is to use custom fonts, yet setting fonts is not yet available apparently. i hope you will be able to add that too sometime.

For now you can do something like this:

imgui = ImGui.new(nil, nil, {
	{"myFonts/font.ttf", 16, 3, 3}, -- font1
	{...}, -- font2
})

Only TTF fonts supported.

keszegh said:
how can i know if in a combo box an item was clicked on?

I dont realy understand you, but maybe something like this...?

for i,v in ipairs(demoData.combo1) do 
	if (imgui:checkbox("CheckBox"..i, v)) then 
		demoData.combo1[i] = not v
	end
end

keszegh · August 2020

when setting font in Imgui.new then size does not seem to be considered, whatever i change "16" to in your example, everything remains the same.

keszegh · August 2020

about combo, let me rephrase,
i have a
currentItem, isOpen = ImGui:combo(label, currentItem, items)
element and i want to trigger something when this combo gets closed.
as a workaround i can make a variable temp which is 0, is changed to 1 when isOpen==true and i trigger the event i want (closing the containing popup window) when (isOpen==false & temp==1), but i'm sure there must be some straightforward imgui function for that.

keszegh · August 2020

another note, probably you know that, but setCursorPosX is not available.

keszegh · August 2020

in the imgui demo there is a style editor which has an export button for colors, it would be quite convenient if somehow it would export the appropriate lua code. like i have many themes here but it's a hassle to convert them to lua:
https://github.com/ocornut/imgui/issues/707

keszegh · August 2020

btw the ImGui:pushStyleColor(color) syntax is wrong in https://github.com/MultiPain/Gideros_ImGui#parameters-stacks-shared

also
pressFlag = ImGui:imageButton(texture, w, h, [padding = -1, tintColor = 0xffffff, 1, borderColor = 0xffffff, 0, uv1x = 1, uv1y = 1, uv0x = 0, uv0y = 0])

you write that first is tintColor but it's the backgroundColor in fact.

keszegh · August 2020

there is some issue with getting colors, in dark style

print(imgui:getStyleColor(imgui.Col_ButtonActive))
print(0x0f87fa) --got it from the style editor

should return the same but they don't.

rrraptor · August 2020

So many messages xD But thanks for your feedback

keszegh said:
about combo, let me rephrase,
i have a
currentItem, isOpen = ImGui:combo(label, currentItem, items)
element and i want to trigger something when this combo gets closed.
as a workaround i can make a variable temp which is 0, is changed to 1 when isOpen==true and i trigger the event i want (closing the containing popup window) when (isOpen==false & temp==1), but i'm sure there must be some straightforward imgui function for that.

Flag name actually not "isOpen", my mistake. Its must be something like isSelected. So you need to use

item, isSelected = imgui:combo(...)
if (isSelected) then
-- do something
end

keszegh said:
another note, probably you know that, but setCursorPosX is not available.

I'm not an expert in ImGui, so I don't know what it is for, so I decided not to implement it yet (as well as some other functions). Can you tell me what it is for?

keszegh said:
in the imgui demo there is a style editor which has an export button for colors, it would be quite convenient if somehow it would export the appropriate lua code. like i have many themes here but it's a hassle to convert them to lua:
https://github.com/ocornut/imgui/issues/707

I'll think about what I can do

keszegh said:
btw the ImGui:pushStyleColor(color) syntax is wrong in https://github.com/MultiPain/Gideros_ImGui#parameters-stacks-shared

Fixed.

keszegh said:
pressFlag = ImGui:imageButton(texture, w, h, [padding = -1, tintColor = 0xffffff, 1, borderColor = 0xffffff, 0, uv1x = 1, uv1y = 1, uv0x = 0, uv0y = 0])

you write that first is tintColor but it's the backgroundColor in fact.

Hmmm, I'll change the order in sources, so it will match with ImGui:image(texture, w, h, [tintColor = 0xffffff, 1, bgColor = 0xffffff])
Also, I changed uv arguments.
First, they are swapped ( [uv0, uv1] instead of [uv1, uv0] ).
Second, no need to calculate uv1 by your self. Now it works like a scale argument.

Btw, I can give you access to edit github page if you want

All I need is ur nickname.

keszegh said:
there is some issue with getting colors, in dark style
print(imgui:getStyleColor(imgui.Col_ButtonActive))
print(0x0f87fa) --got it from the style editor
should return the same but they don't.

Oh, my bad
https://github.com/MultiPain/Gideros_ImGui/blob/3c628cc45a9e871653f230de7fbc9f1510d3067a/main.cpp#L85
Must be

GColor::toHex(color.x, color.y, color.>z<, color.w)

Also, result is a bit different. Its 0x0f87f9 instead of 0x0f87fa. I guess its ok...?

keszegh · August 2020

setCursorPosX seems to be position to an exact place the 'cursor', so e.g. the next text element is starting from there. i could use sameLine() though to have the same functionality.

"Also, result is a bit different. Its 0x0f87f9 instead of 0x0f87fa. I guess its ok...?"
-well the point would be to get the exact value, whatever it is (so e.g. i can match some other color with pushstylecolor to be the same).

keszegh · August 2020

btw while changing font size in imgui.new did not effect the font, i could scale it afterwards with imgui:ioSetFontGlobalScale().

keszegh · August 2020

my github name is also keszegh, even though i do not want to mess up anything. still, i can correct typos when there is no doubt.

rrraptor · August 2020

Added some new features

https://github.com/MultiPain/Gideros_ImGui/blob/master/README.md#loggingcapture
https://github.com/MultiPain/Gideros_ImGui/blob/master/README.md#style-settersgetters
https://github.com/MultiPain/Gideros_ImGui/blob/master/README.md#cursor--layout

ImGui:setCursorPos(local_x, local_y)
ImGui:setCursorPosX(local_x)
ImGui:setCursorPosY(local_y)

keszegh · August 2020

at log what does TTY mean?

rrraptor · August 2020

I have no idea

I need to test it )))

rrraptor · August 2020

dll updated.

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