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Sample Scripts

Sample scripts culled from the forums, credits to thos who posted in the kgPanel thread.

Adjusting Panels based on Raid or 5 Main party

In each Panel set the OnLoad script 

 self:RegisterEvent("PLAYER_ENTERING_WORLD")
 self:RegisterEvent("PARTY_MEMBERS_CHANGED")
 self:RegisterEvent("RAID_ROSTER_UPDATE")

Then in each Panel OnEvent script: 

 local pmems = GetNumPartyMembers()
 local rmems = GetNumRaidMembers()
 if (pmems < 1 and rmems < 1) or (pmems > 0 and pmems < 6 and rmems < 6) then
    self:Hide()
 else
    self:Show()
 end

Using a onClick handler

Be sure you enable mouse clicks on your panel Example: Hide/Show recount when you click the panel 

if Recount.MainWindow:IsVisible() then
  Recount.MainWindow:Hide()
else
  Recount.MainWindow:Show()
end

Changing a frame based on Target

OnLoad 

self:RegisterEvent("UNIT_TARGET")
self:Hide()

OnEvent 

if UnitExists("target") == nil then
   self:Hide()
   return
end
local cl = UnitClassification("target")
if (cl == "elite") or (cl == "worldboss") or (cl == "rareeleite") then
   self:SetBackdropColor(0.1, 0.1, 0.1, 0.1)
   self:Show()
else
   self:SetBackdropColor(1, 1, 1, 1)
   self:Show()
end

Hooking another frame to control your own frame

Examples uses Violation Script Dependacy: Violation OnLoad 

local myPanel = self
if Violation0 then
  Violation0:SetScript("OnShow",function(frame)
    myPanel:Show()
  end)
  Violation0:SetScript("OnHide",function(frame)
    myPanel:Hide()
  end)
end
if Violation0:IsVisible() then self:Show() else self:Hide() end

Controlling a panel based on entering a major city

OnLoad 

self:RegsiterEvent('CHAT_MSG_CHANNEL_NOTICE')

OnEvent: 

if event == "CHAT_MSG_CHANNEL_NOTICE" then
  -- arg1 is either "YOU JOINED", "YOU LEFT" or "THROTTLED"
  -- arg7 is channel type (trade is type 2)
  -- so
  if arg1 == "YOU_JOINED" and arg7 == 2 then
    self:Show()
  end
  if arg1 == "YOU_LEFT" and arg7 == 2 then
    self:Hide()
  end
end

Make your own spell damage display

Create a panel OnLoad 

self:RegisterEvent("PLAYER_AURAS_CHANGED")

OnEvent: 

dmg = GetSpellBonusDamage(6);
self.text:SetText(dmg)

Change a frame color based on your class

OnLoad 

local _, class = UnitClass("player");
	if class == "WARRIOR" then
        self.bg:SetVertexColor(0.95, 0.23, 0.23, self.bg:GetAlpha())
	elseif class == "PRIEST" then
        self.bg:SetVertexColor(1, 0.96, 0.98, self.bg:GetAlpha())
	elseif class == "MAGE" then
        self.bg:SetVertexColor(0.00, 1, 1, self.bg:GetAlpha())
	elseif class == "DRUID" then
        self.bg:SetVertexColor(1, 0.49, 0.04, self.bg:GetAlpha())
	elseif class == "PALADIN" then
        self.bg:SetVertexColor(0.92, 0.22, 0.46, self.bg:GetAlpha())
	elseif class == "HUNTER" then
        self.bg:SetVertexColor(0.33, 0.86, 0.00, self.bg:GetAlpha())
	elseif class == "ROGUE" then
        self.bg:SetVertexColor(1, 0.94, 0.16, self.bg:GetAlpha())
	elseif class == "SHAMAN" then
        self.bg:SetVertexColor(0.13, 0.42, 1, self.bg:GetAlpha())
	elseif class == "WARLOCK" then
        self.bg:SetVertexColor(0.36, 0.18, 1, self.bg:GetAlpha())
	end

Show a panel based on being in combat

OnLoad 

self:RegisterEvent("PLAYER_REGEN_DISABLED")
self:RegisterEvent("PLAYER_REGEN_ENABLED")

OnEvent 

if event == "PLAYER_REGEN_ENABLED" then
  self:Hide()
elseif event == "PLAYER_REGEN_DISABLED" then
  self:Show()
end

How to get 8 value tex coords form 4 value examples

For instance you want to use the raid icons blizz provides as a texture. foirst add teh texture to your art library or add it to sharedmedia up to you.

On a Mac ive found use the / slash when entering items is much easier.

Now lets use the status icon as an exmaple

I used onLoad to quickly get the information i wanted. 

-- coords found in the FrameXML files
-- left,right,top,bottom
self.bg:SetTexCoord(0.5,1,0,0.5)
local ULx,ULy,LLx,LLy,URx,URy,LRx,LRy = self.bg:GetTexCoord()
print(" ULX: "..ULx)
print(" ULy:"..ULy)
print(" LLX:"..LLx)
print(" LLy:"..LLy)
print(" URx: "..URx)
print(" URy:"..URy)
print(" LRx:"..LRx)
print(" LRy:"..LRy)

Now i have the 8 position coords for the combat icon which is UL(0.5,0) LL(0.5,0.5) UR(1,0) LR(1,0.5)

Its a little bit of a pain, but the 8 coord setup allows for so much more flexibility as you can do transforms. The 4 position method only allows you to make rectangles.

Healer mana warning by warlocomotif

OnLoad 

self:RegisterEvent("PLAYER_REGEN_ENABLED")
HEALERWARNING_TIME = 5
HEALERWARNING_PERCENT = 20
HWSHOWTIMER = 0
self:Hide()

OnEvent 

if UnitGroupRolesAssigned("player") then
  for i=1,GetNumPartyMembers() do
    if select(2, UnitGroupRolesAssigned("party"..i)) then 
      if (UnitPower("party"..i) / UnitPowerMax("party"..i)) < (HEALERWARNING_PERCENT / 100) then
        self:Show()
        HWSHOWTIMER = GetTime()
      end
      break
    end
  end
end

OnUpdate 

if HWSHOWTIMER ~= 0 then
  if (GetTime() - HWSHOWTIMER) > HEALERWARNING_TIME then
    HWSHOWTIMER = 0
    self:Hide()
  end
end

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