absolute to relative in GUIs

[darhal]

Hello,

I need to know how to convert absolute values for GUIs to relative ones ? I see function in guieditor do smthg like this but the resource is too huge and I cant find this function out can anyone help me ?

thx all

[Walid]

Hello,

I need to know how to convert absolute values for GUIs to relative ones ? I see function in guieditor do smthg like this but the resource is too huge and I cant find this function out can anyone help me ?

thx all

Try to use sth like this

function ConvertAbsoluteToRelative( X, Y ) 
    local rX, rY = guiGetScreenSize() 
    local x = math.floor(X*rX/1280) 
    local y = math.floor(Y*rY/720) 
    return x, y 
end 

[darhal]

I know already this function it work only for dx and I try it already It dont work of course .

I need to know how to convert for GUIs to use it to gui create windows etc

[Miika]

I use always this method:

local sizeX, sizeY = 400, 500 -- Window size 
local x, y = guiGetScreenSize() -- get screen size 
local myGui = guiCreateWindow(x/2-sizeX/2, y/2-sizeY/2, sizeX, sizeY, "My gui", false) -- It's relative! 

[darhal]

good one but it will center window ? I dont need to center windows

[Miika]

oops, sorry

[Lawliet]

I suppose you could try it with a combination of guiGetPosition, guiGetSize and guiGetScreenSize. First, you get the absolute values of the GUI element using guiGetPosition and guiGetSize, then simply divide them by the values you got from guiGetScreenSize to get the relative positions.

Keep in mind that, since you are basically converting absolute values to relative ones, said relatives values will be tailored to the resolution the absolute values where drawn with. So, just because a GUI element was in the top left corner with a resolution of 800x600, it doesn't mean it will be in same corner too when using a resolution of 1366x768.

[Dealman]

This is all very simple math. Design your interface in absolute values, and then you divide those absolute values by the resolution you designed it in, for example

local screenW, screenH = guiGetScreenSize() 
  
-- Absolute - created in 1920x1080 resolution 
dxDrawImage(30, 247, 357, 89, "", 0, 0, 0, tocolor(255, 255, 255, 255), false) 
-- Same, but Relative 
dxDrawImage((30/1920)*screenW, (247/1080)*screenH, (357/1920)*screenW, (89/1080)*screenH, "Textures/Button1_Active.dds", 0, 0, 0, tocolor(255, 255, 255, 255), false) 

Of course doing it like this means it would have to do that math every frame, so you could calculate it manually and just do it like this;

dxDrawImage(0.015625*screenW, 0.2287037037037037*screenH, 0.1859375*screenW, 0.0824074074074074*screenH, "Textures/Button1_Active.dds", 0, 0, 0, tocolor(255, 255, 255, 255), false) 

You can use repl.it to quickly test Lua scripts. And you can then use this script on that website to quickly convert it so you can just copy and paste it.

local sX, sY, wX, hY = 30, 247, 357, 89; -- Paste the absolute values here 
local sourceWidth = 1920;    -- Change those to the source values. 
local sourceHeight = 1080;   -- Change those to the source values. 
local nSX, nSY, nWX, nHY = (sX/sourceWidth), (sY/sourceHeight), (wX/sourceWidth), (hY/sourceHeight); 
  
print(tostring(nSX).."*screenW, "..tostring(nSY).."*screenH, "..tostring(nWX).."*screenW, "..tostring(nHY).."*screenH"); 

[darhal]

Thx guys i fix it by my self