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WoWInterface: SVN - bdGrid - Rev 2 - /trunk/lib/oUF/elements/portraits.lua

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[/] [trunk/] [lib/] [oUF/] [elements/] [portraits.lua] - Rev 2

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--[[ Element: Portraits

 Handles updating of the unit's portrait.

 Widget

 Portrait - A PlayerModel or Texture used to represent the unit's portrait.

 Notes

 The quest delivery question mark will be used instead of the unit's model when
 the client doesn't have the model information for the unit.

 Examples

   -- 3D Portrait
   -- Position and size
   local Portrait = CreateFrame('PlayerModel', nil, self)
   Portrait:SetSize(32, 32)
   Portrait:SetPoint('RIGHT', self, 'LEFT')
   
   -- Register it with oUF
   self.Portrait = Portrait

   -- 2D Portrait
   local Portrait = self:CreateTexture(nil, 'OVERLAY')
   Portrait:SetSize(32, 32)
   Portrait:SetPoint('RIGHT', self, 'LEFT')
   
   -- Register it with oUF
   self.Portrait = Portrait

 Hooks

 Override(self) - Used to completely override the internal update function.
                  Removing the table key entry will make the element fall-back
                  to its internal function again.
]]

local parent, ns = ...
local oUF = ns.oUF

local Update = function(self, event, unit)
        if(not unit or not UnitIsUnit(self.unit, unit)) then return end

        local portrait = self.Portrait
        if(portrait.PreUpdate) then portrait:PreUpdate(unit) end

        if(portrait:IsObjectType'Model') then
                local guid = UnitGUID(unit)
                if(not UnitExists(unit) or not UnitIsConnected(unit) or not UnitIsVisible(unit)) then
                        portrait:SetCamDistanceScale(0.25)
                        portrait:SetPortraitZoom(0)
                        portrait:SetPosition(0,0,0.5)
                        portrait:ClearModel()
                        portrait:SetModel('interface\\buttons\\talktomequestionmark.m2')
                        portrait.guid = nil
                elseif(portrait.guid ~= guid or event == 'UNIT_MODEL_CHANGED') then
                        portrait:SetCamDistanceScale(1)
                        portrait:SetPortraitZoom(1)
                        portrait:SetPosition(0,0,0)
                        portrait:ClearModel()
                        portrait:SetUnit(unit)
                        portrait.guid = guid
                end
        else
                SetPortraitTexture(portrait, unit)
        end

        if(portrait.PostUpdate) then
                return portrait:PostUpdate(unit)
        end
end

local Path = function(self, ...)
        return (self.Portrait.Override or Update) (self, ...)
end

local ForceUpdate = function(element)
        return Path(element.__owner, 'ForceUpdate', element.__owner.unit)
end

local Enable = function(self, unit)
        local portrait = self.Portrait
        if(portrait) then
                portrait:Show()
                portrait.__owner = self
                portrait.ForceUpdate = ForceUpdate

                self:RegisterEvent("UNIT_PORTRAIT_UPDATE", Path)
                self:RegisterEvent("UNIT_MODEL_CHANGED", Path)
                self:RegisterEvent('UNIT_CONNECTION', Path)

                -- The quest log uses PARTY_MEMBER_{ENABLE,DISABLE} to handle updating of
                -- party members overlapping quests. This will probably be enough to handle
                -- model updating.
                --
                -- DISABLE isn't used as it fires when we most likely don't have the
                -- information we want.
                if(unit == 'party') then
                        self:RegisterEvent('PARTY_MEMBER_ENABLE', Path)
                end

                return true
        end
end

local Disable = function(self)
        local portrait = self.Portrait
        if(portrait) then
                portrait:Hide()
                self:UnregisterEvent("UNIT_PORTRAIT_UPDATE", Path)
                self:UnregisterEvent("UNIT_MODEL_CHANGED", Path)
                self:UnregisterEvent('PARTY_MEMBER_ENABLE', Path)
                self:UnregisterEvent('UNIT_CONNECTION', Path)
        end
end

oUF:AddElement('Portrait', Path, Enable, Disable)

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