Need help coloring "widget"

[Sauerkraut]

I've started playing around with a new layout and I've gotten most things working, however there is a small arrow that I am using to indicate power on the power bar. I've included an image since it is a little hard to explain


I'm currently using the follow to color it

  oUF.colors.power['MANA'] = {0.0, 0.56, 1.0}
  oUF.colors.power['RAGE'] = {1.0,0,0}
  oUF.colors.power['FOCUS'] = {1.0,0.75,0.25}
  oUF.colors.power['ENERGY'] = {1.0, 0.9, 0.35}
  oUF.colors.power['RUNIC_POWER'] = {0.44,0.44,0.44}
  local _, pType = UnitPowerType("player")
  local pcolor = oUF.colors.power[pType] or {.3,.45,.65}

	s.arrow:SetVertexColor(unpack(pcolor))

It works most of the time but others I need to do a /rl to have it pick up the proper color. Also if I am on a druid and I shapeshift to a different form it doesn't update. I'm sure I'm just missing some thing but I'm not sure how to go about making it update. Any help would be appreciated.

[Rainrider]

How did you created the arror? (is it a texture, what is its parent frame and what events are registered to the frame?)

You have 2 options: creating an element as an oUF module and registering the proper events so it updates correctly, or just do it directly in the layout. This is what I currently use for threat, maybe it helps you a bit

create the element and expose it to the namespace

local AddThreatHighlight = function(self, event, unit)
    if (unit ~= self.unit) then return end
 
    local status = UnitThreatSituation(unit)
    if (status and status > 0) then
        local r, g, b = GetThreatStatusColor(status)
    
        self.FrameBackdrop:SetBackdropBorderColor(r, g, b)
    else
        self.FrameBackdrop:SetBackdropBorderColor(0, 0, 0)
    end
end
ns.AddThreatHighlight = AddThreatHighlight

enable it for the frame:

self:RegisterEvent("UNIT_THREAT_SITUATION_UPDATE", ns.AddThreatHighlight)

I'm unsure if an element as a module has any benefits.

And if you plan to release your layout, you should use metatables for the colors and not overwrite the oUF dafault table, in case a user wants to use a diffenrent layout for say raid frames or so.

ns.colors = setmetatable({
    power = setmetatable({
        ['MANA'] = {0.0, 0.56, 1.0},
        ['RAGE'] = {1.0,0,0},
        ['FOCUS'] = {1.0,0.75,0.25},
        ['ENERGY'] = {1.0, 0.9, 0.35},
        ['RUNIC_POWER'] = {0.44,0.44,0.44},
    }, {__index = oUF.colors.power}),
}, {__index = oUF.colors})

[Sauerkraut]

The arrow is a texture spawned on the power bar frame.

		s.arrow = s:CreateTexture(nil, "OVERLAY")
		s.arrow:SetTexture([[Interface\Addons\oUF_Fail\media\textureArrow]])
		s.arrow:SetSize(16,16)
		s.arrow:SetPoint("BOTTOM", s:GetStatusBarTexture(), "RIGHT", 0, 7)
		s.arrow:SetVertexColor(unpack(pcolor))
		fixTex(s.arrow)

Thanks for the code i'll see if I can figure out how or if it will work.

[Rainrider]

You could probably just use PostUpdate for the power element to change the color of the arrow.

[Sauerkraut]

I'm stumped. I'm sure I am doing something stupid but I can't figure it out. I found and example of a similar postupdate in Dawn's oUF_Nivea but I can't get it to work.

local PostUpdatePower = function(f, event, unit, Power)

	local _, ptype = UnitPowerType("player")
        if(oUF.colors.power[ptype]) then
		r, g, b = unpack(oUF.colors.power[ptype])
	end

	f:SetVertexColor(r, g, b)

end

NM I figured it out. Thanks for the help.

[zork]

@Kraut
There are events to track the druid shapeshift.

Your arrow frame needs to hook them and change it's color accordingly.

The unit powertype colors of oUF are initiated on login.

By the time it loads it may be possible that UnitPowerType("player") still returns nil. But not sure about that. I think it should work, at least UnitClass etc. does.

EVENT: UNIT_DISPLAYPOWER "Fired when the unit's mana stype is changed. Occurs when a druid shapeshifts as well as in certain other cases." http://wowprogramming.com/docs/events/UNIT_DISPLAYPOWER

Basically...register the event to your arrow frame and then call UnitPowerType player and set the color of the arrow.

I recommend registering PLAYER_LOGIN aswell. By that time the function will be working and you should be able to set the color correctly.

Sth like this should work...

--set color
  lib.setArrowColor = function(self)
    local _, pType = UnitPowerType("player")
    local pcolor = oUF.colors.power[pType] or {.3,.45,.65}
    self.arrow:SetVertexColor(unpack(pcolor))
  end
  
  --hook events  
  self:RegisterEvent("PLAYER_LOGIN", lib.setArrowColor)
  self:RegisterEvent("PLAYER_ENTERING_WORLD", lib.setArrowColor)
  self:RegisterEvent("UNIT_DISPLAYPOWER", lib.setArrowColor)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Btw I found a neat trick for threat coloring (I guess I'm the last one to find out about forceUpdate O_O).
It is awesome because if color is set via self.Health.colorHealth = true then if you don't have aggro the color will stay and the color is updated as soon as any of the events if fired.

--update health func
  lib.updateHealth = function(bar, unit, min, max)
    --color the hp bar in red if the unit has aggro
    if unit and UnitThreatSituation(unit) == 3 then
      bar:SetStatusBarColor(1,0,0)
      if bar.bg then bar.bg:SetVertexColor(1*bar.bg.multiplier,0,0) end
    end   
  end
  
  --check threat
  lib.checkThreat = function(self,event,unit)
    --force an update on the health frame
    self.Health:ForceUpdate()
  end
 
  self.Health.PostUpdate = lib.updateHealth
  self:RegisterEvent("PLAYER_TARGET_CHANGED", lib.checkThreat)
  self:RegisterEvent("UNIT_THREAT_SITUATION_UPDATE", lib.checkThreat)