AddOn doesn't load a texture properly

[felipers]

Hi guys,

I'm programming a very simple addon, just to learn a bit. It's a addon that shows a simple XP bar. The problem is that sometimes (not everytime), after reloading the UI, my status bar (that's inside a frame) doesn't appear. The rest of the UI loads normally, just my status bar doesn't appear. The code is below:

local function hex2rgb(hex)
	local r, g, b = string.sub(hex, 1, 2), string.sub(hex, 3, 4), string.sub(hex, 5, 6)
	return (tonumber(r, 16)/255), (tonumber(g, 16)/255), (tonumber(b, 16)/255)
end

local config = {
	borderColor = '222222',
	backgroundColor = '777777',
	borderSize = 1,
	align = 'CENTER',
	position = { x = 0, y = 0 },
	width = 300,
	height = 6
}

-- Background Frame
local bgframe = CreateFrame('Frame', nil)
bgframe:SetWidth(config.width)
bgframe:SetHeight(config.height)
bgframe:SetPoint(config.align, config.position.x, config.position.y)
bgframe:SetFrameStrata('LOW')
bgframe.texture = bgframe:CreateTexture()
bgframe.texture:SetAllPoints(bgframe)
bgframe.texture:SetTexture(hex2rgb(config.borderColor))

-- Status Bar Frame -> this is the guy that doesn't appear
local StatusBar = CreateFrame('StatusBar', nil, bgframe)
StatusBar:SetWidth(config.width - (2 * config.borderSize))
StatusBar:SetHeight(config.height - (2 * config.borderSize))
StatusBar:SetPoint('TOPLEFT', config.borderSize, config.borderSize * (-1))
StatusBar.texture = StatusBar:CreateTexture()
StatusBar.texture:SetAllPoints(StatusBar)
StatusBar.texture:SetTexture(hex2rgb(config.backgroundColor))
StatusBar:SetMinMaxValues(0, 100)
StatusBar:SetValue(50) -- 50% just for tests

local _, playerClass = UnitClass("player")
local classColor = RAID_CLASS_COLORS[playerClass]
local r, g, b = classColor.r, classColor.g, classColor.b
local BarTexture = StatusBar:CreateTexture()
BarTexture:SetGradient('VERTICAL', 0.3, 0.3, 0.3, 0.8, 0.8, 0.8)
BarTexture:SetTexture(r, g, b)
StatusBar:SetStatusBarTexture(BarTexture) -- maybe the problem is here, really dunno

Really don't know what is the problem

Sry for my poor english.

-- Editing

In order to explain better, there's a image below:

[Crissa]

Your english is fine. I just have no idea.

-Crissa

[felipers]

Hi guys,

After a bunch os tries, I think I got it.

I changed the following line:

StatusBar:SetStatusBarTexture(BarTexture)

by:

StatusBar:SetStatusBarTexture(BarTexture, "OVERLAY")

I tried the following parameters:

• BACKGROUND - The bar doesn't appear (but the bar's gray background works normally)
• BORDER - Same as above
• ARTWORK - same as above, but SOMETIMES (that's the strange thing) it worked (just like empty parameter)
• OVERLAY - worked always lol

I fixed it, but I still would like to know WHY the artwork/empty parameter just works sometimes.

[Waky]

I'm pretty sure when you create a texture without specifying its layer it will default to ARTWORK. That being said, if your gray bar is artwork and your green bar is artwork and they're on the same level it's possible that the gray was just on top of the green bar.

That's all I can think of, glad to see you got it working though!

[felipers]

Waky, that's exactly what I think (green bar behind gray bar). The strange is why sometimes it works and sometimes it doesn't. Maybe that's something in the low level (rendering) processing.

Thank you for your comment.