## Slab - An Immediate Mode GUI Library In Lua

coding.jackalope
Prole
Posts: 29
Joined: Sun Feb 24, 2019 6:30 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

Thanks for sharing a screenshot of your project using Slab. Its always great seeing Slab used by other developers.
pericles
Prole
Posts: 8
Joined: Tue Dec 25, 2018 6:31 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

I did try it out and worked really well. Nice tutorial file, good wiki documentation and easy to follow

Thanks Jackalope, awesome work ^~^
deb75
Prole
Posts: 38
Joined: Sun Apr 18, 2021 1:11 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

Hello,

Is it possible to make the gui semi-transparent ?

I retrieved Slab from github, but it is unclear for me how to install it. In my project directory, I have ./lib/ext directory where I put all
external libraires. What should I put in there from Slab ? There is "Slab.lua", but also "init.lua" ? Do I have to put "main.lua" which seems to be an example file ?

regards
togFox
Party member
Posts: 376
Joined: Sat Jan 30, 2021 9:46 am

### Re: Slab - An Immediate Mode GUI Library In Lua

Put the whole slab folder in a subdirectory under main.lua.

In main.lua you use

Slab = require 'Slab.Slab

Slab.Slab refers to the slab.lua file in the slab subfolder.

Maybe you can set the alpha value when setting slab colours to get transparency.
grump
Party member
Posts: 813
Joined: Sat Jul 22, 2017 7:43 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

deb75 wrote: Thu Jun 03, 2021 9:33 pm There is "Slab.lua", but also "init.lua" ?
When you have a lib in a folder, and it has a file named init.lua, you require the folder. In your case

Code: Select all

local Slab = require('lib.ext.Slab')
deb75
Prole
Posts: 38
Joined: Sun Apr 18, 2021 1:11 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

Thanks for your answeers.

By the way, what is the best practice with external libraries.

I used to putting them within the root project directory. However, I noticed that love2d also searches in /path/to/lovedir/ (for dlls) and /path/to/lovedir/lua/ for lua files.

On the one hand, it seems better to put external libraries in a project independent location but on the other hand, if I want to distribute the game as a *.love file, I will have to embed them.
coding.jackalope
Prole
Posts: 29
Joined: Sun Feb 24, 2019 6:30 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

deb75 wrote: Thu Jun 03, 2021 9:33 pm Hello,

Is it possible to make the gui semi-transparent ?

regards
Hi deb75, you can make the gui semi-transparent in a few ways. One way is to modify the 'BgColor' option when calling the 'BeginWindow' function. Another option is to modify the 'WindowBackgroundColor' style setting in 'Styles.lua'. You can find more information about this here.
deb75 wrote: Fri Jun 04, 2021 9:22 am Thanks for your answeers.

By the way, what is the best practice with external libraries.

I used to putting them within the root project directory. However, I noticed that love2d also searches in /path/to/lovedir/ (for dlls) and /path/to/lovedir/lua/ for lua files.

On the one hand, it seems better to put external libraries in a project independent location but on the other hand, if I want to distribute the game as a *.love file, I will have to embed them.
I think this is more personal preference. I like to place dependencies as sub-folders under the root project under some 'ext' folder. This makes it easy for distribution, and you can quickly move this over to another platform and test without having to re-download dependencies again.
deb75
Prole
Posts: 38
Joined: Sun Apr 18, 2021 1:11 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

Thanks for your answeer.

I got transparency working with :

Code: Select all

local Slab = require("lib.ext.Slab")

love.graphics.setBackgroundColor(0.4, 0.88, 1.0)
Slab.Initialize(args)
end

function love.update(dt)
Slab.Update(dt)

Slab.BeginWindow("MyFirstWindow", {
BgColor = { 0.5, 0.5, 0.5, 0.5 },
Rounding = 5,
})
Slab.Text("Hello World")

Slab.EndWindow()
end

function love.draw()
Slab.Draw()
end


However, when I move the window, some shadow windows appear at some place, if I put the window into one of the shadow one,
the window gets stuck to one of the border. Can I suppress this behavior ?

Also, is it possible to round not all corner of the box ? say only two diagonally opposed of them ?

Regards
yetneverdone
Party member
Posts: 396
Joined: Sat Sep 24, 2016 11:20 am
Contact:

### Re: Slab - An Immediate Mode GUI Library In Lua

Hi @coding.jackalope, just wondering why there's no activity for a very long time at Slab's repo at Github?
deb75
Prole
Posts: 38
Joined: Sun Apr 18, 2021 1:11 pm

### Re: Slab - An Immediate Mode GUI Library In Lua

Hello,

I experience some difficulties with Slab.

I develop a game which has a background composed of tiled images which can change when moving the mouse, just like when you use openstreet map. Tiled images are drawn on a canvas during the

Code: Select all

love.update
and the canvas itself is drawn during

Code: Select all

love.draw
It runs smoothly, that is to say I can drag the background with the mouse like on google map.

However, as soon as I add :

Code: Select all

Slab.Initialize(args)

I can no more drag the background smoothly. More precisely, the background is no more drawn when moving the mouse.
However, when I release the mouse button, it does draw again the background as expected.

Do you have any idea for why Slab has this effect on the drawing ? So sad that it prevents me from using Slab.

Regards

### Who is online

Users browsing this forum: No registered users and 9 guests