Need help with Lua Frames

Amexi · 10-13-13, 05:01 PM

Hey!

I'm kinda new to LUA coding and I'm currently trying to create a frame strip to the left of my PitBull4 party frames and when a player joins my party I want that frame to expand automatically without having to reload my UI.

Current Code:

Code:

function P:OnEnable()
	local frame = CreateFrame("Frame", nil, PitBull4_Groups_Party)
	frame:SetHeight(P:CalculateHeight()) -- Set Height of the frame automatically
	frame:SetWidth(3)
	frame:SetPoint("LEFT", -10, 0, "CENTER", 0, 0)
	 
	-- Instead of using a backdrop, I create a texture as the background
	frame.bg = frame:CreateTexture(nil, "BACKGROUND")
	frame.bg:SetAllPoints(frame)
	frame.bg:SetTexture("Interface/Tooltips/UI-Tooltip-Background")
	frame.bg:SetGradientAlpha("VERTICAL", 0, 0, 0, 1, 0, 0, 0, 1)
	
	frame:RegisterEvent("PARTY_MEMBERS_CHANGED", function() frame:SetHeight(P:CalculateHeight()); end)
end

function P:CalculateHeight()
	members = GetNumGroupMembers();

        -- (frame height + padding top + padding bottom) * party member count
	return (12 + 5 + 5) * members
end

Any suggestion how to do this? It works if I reload my UI each time someone joins, but I want it to update automatically so I don't need to reload my ui each time :P

Thanks!

humfras · 10-13-13, 06:04 PM

RAID_ROSTER_UPDATE and PARTY_MEMBERS_CHANGED had been replaced with GROUP_ROSTER_UPDATE.

Using this event will update the groups accordingly.

For error-free and more usefull code see below

Vrul · 10-13-13, 06:29 PM

You have a few errors there. That SetPoint call has too many arguments, the SetTexture call doesn't have the slashes right, and you are treating frame like it had AceEvent embedded with the RegisterEvent call passing a function. Try:

Code:

function P:OnEnable()
    if not self.frame then
        local frame = CreateFrame("Frame", nil, PitBull4_Groups_Party)
        frame:SetPoint("LEFT", -10, 0)
        frame:SetWidth(3)

        -- Instead of using a backdrop, I create a texture as the background
        local texture = frame:CreateTexture(nil, "BACKGROUND")
        texture:SetAllPoints()
        texture:SetTexture([[Interface/Tooltips/UI-Tooltip-Background]])
        texture:SetGradientAlpha("VERTICAL", 0, 0, 0, 1, 0, 0, 0, 1)
        frame.texture = texture

        function frame:AdjustHeight()
            -- (frame height + padding top + padding bottom) * party member count
            self:SetHeight((12 + 5 + 5) * GetNumGroupMembers())
        end

        frame:SetScript("OnEvent", frame.AdjustHeight) -- Set Height of the frame automatically
        frame:RegisterEvent("GROUP_ROSTER_UPDATE")
        self.frame = frame
    end
    self.frame:AdjustHeight()
end

If PitBull4_Groups_Party changes with party size then two proper SetPoints would do the same thing as the functions and event registering.

Amexi · 10-14-13, 04:02 PM

Oh, thanks for the help! But now I have another question about that frame.

If I want the frame to just expand downwards and not downwards and upwards, how can I achieve this? Right now it does expand both ways and I really can't seem to fix it. Does it depend on how it's aligned?

Vrul · 10-14-13, 05:56 PM

Change:

Code:

frame:SetPoint("LEFT", -10, 0)

to:

Code:

frame:SetPoint("TOPLEFT", -10, 0)

Amexi · 10-14-13, 06:18 PM

Oh god.. *facepalm* Thanks, lol!