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WoWInterface: SVN - fernir_UI - Rev 2 - /oUF/elements/castbar.lua

WoWInterface SVN fernir_UI

[/] [oUF/] [elements/] [castbar.lua] - Rev 2

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--[[
        Original codebase:
                oUF_Castbar by starlon.
                http://svn.wowace.com/wowace/trunk/oUF_Castbar/

        Elements handled: .Castbar
        Sub-elements: .Text, .Icon, .Time, .SafeZone, .Spark
        Notes: This element will not work on units that require a OnUpdate.
        (eventless units).

        Functions that can be overridden from within a layout:
         - :CustomDelayText(duration)
         - :CustomTimeText(duration)

--]]
local parent, ns = ...
local oUF = ns.oUF

local noop = function() end
local UnitName = UnitName
local GetTime = GetTime
local UnitCastingInfo = UnitCastingInfo
local UnitChannelInfo = UnitChannelInfo

local UNIT_SPELLCAST_START = function(self, event, unit, spell, spellrank)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        local name, rank, text, texture, startTime, endTime, _, castid, interrupt = UnitCastingInfo(unit)
        if(not name) then
                castbar:Hide()
                return
        end

        endTime = endTime / 1e3
        startTime = startTime / 1e3
        local max = endTime - startTime

        castbar.castid = castid
        castbar.duration = GetTime() - startTime
        castbar.max = max
        castbar.delay = 0
        castbar.casting = true
        castbar.interrupt = interrupt

        castbar:SetMinMaxValues(0, max)
        castbar:SetValue(0)

        if(castbar.Text) then castbar.Text:SetText(text) end
        if(castbar.Icon) then castbar.Icon:SetTexture(texture) end
        if(castbar.Time) then castbar.Time:SetText() end

        local sf = castbar.SafeZone
        if(sf) then
                sf:ClearAllPoints()
                sf:SetPoint'RIGHT'
                sf:SetPoint'TOP'
                sf:SetPoint'BOTTOM'
        end

        if(self.PostCastStart) then self:PostCastStart(event, unit, name, rank, text, castid, interrupt) end
        castbar:Show()
end

local UNIT_SPELLCAST_FAILED = function(self, event, unit, spellname, spellrank, castid)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        if(castbar.castid ~= castid) then
                return
        end

        castbar.casting = nil
        castbar.interrupt = nil
        castbar:SetValue(0)
        castbar:Hide()

        if(self.PostCastFailed) then
                return self:PostCastFailed(event, unit, spellname, spellrank, castid)
        end
end

local UNIT_SPELLCAST_INTERRUPTED = function(self, event, unit, spellname, spellrank, castid)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        if(castbar.castid ~= castid) then
                return
        end
        castbar.casting = nil
        castbar.channeling = nil

        castbar:SetValue(0)
        castbar:Hide()

        if(self.PostCastInterrupted) then
                return self:PostCastInterrupted(event, unit, spellname, spellrank, castid)
        end
end

local UNIT_SPELLCAST_DELAYED = function(self, event, unit, spellname, spellrank)
        if(self.unit ~= unit) then return end

        local name, rank, text, texture, startTime, endTime = UnitCastingInfo(unit)
        if(not startTime) then return end

        local castbar = self.Castbar
        local duration = GetTime() - (startTime / 1000)
        if(duration < 0) then duration = 0 end

        castbar.delay = castbar.delay + castbar.duration - duration
        castbar.duration = duration

        castbar:SetValue(duration)

        if(self.PostCastDelayed) then
                return self:PostCastDelayed(event, unit, name, rank, text)
        end
end

local UNIT_SPELLCAST_STOP = function(self, event, unit, spellname, spellrank, castid)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        if(castbar.castid ~= castid) then
                return
        end

        castbar.casting = nil
        castbar.interrupt = nil
        castbar:SetValue(0)
        castbar:Hide()

        if(self.PostCastStop) then
                return self:PostCastStop(event, unit, spellname, spellrank, castid)
        end
end

local UNIT_SPELLCAST_CHANNEL_START = function(self, event, unit, spellname, spellrank)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        local name, rank, text, texture, startTime, endTime, isTrade, interrupt = UnitChannelInfo(unit)
        if(not name) then
                return
        end

        endTime = endTime / 1e3
        startTime = startTime / 1e3
        local max = (endTime - startTime)
        local duration = endTime - GetTime()

        castbar.duration = duration
        castbar.max = max
        castbar.delay = 0
        castbar.channeling = true
        castbar.interrupt = interrupt

        castbar:SetMinMaxValues(0, max)
        castbar:SetValue(duration)

        if(castbar.Text) then castbar.Text:SetText(name) end
        if(castbar.Icon) then castbar.Icon:SetTexture(texture) end
        if(castbar.Time) then castbar.Time:SetText() end

        local sf = castbar.SafeZone
        if(sf) then
                sf:ClearAllPoints()
                sf:SetPoint'LEFT'
                sf:SetPoint'TOP'
                sf:SetPoint'BOTTOM'
        end

        if(self.PostChannelStart) then self:PostChannelStart(event, unit, name, rank, text, interrupt) end
        castbar:Show()
end

local UNIT_SPELLCAST_CHANNEL_UPDATE = function(self, event, unit, spellname, spellrank)
        if(self.unit ~= unit) then return end

        local name, rank, text, texture, startTime, endTime, oldStart = UnitChannelInfo(unit)
        if(not name) then
                return
        end

        local castbar = self.Castbar
        local duration = (endTime / 1000) - GetTime()

        castbar.delay = castbar.delay + castbar.duration - duration
        castbar.duration = duration
        castbar.max = (endTime - startTime) / 1000

        castbar:SetMinMaxValues(0, castbar.max)
        castbar:SetValue(duration)

        if(self.PostChannelUpdate) then
                return self:PostChannelUpdate(event, unit, name, rank, text)
        end
end

local UNIT_SPELLCAST_CHANNEL_STOP = function(self, event, unit, spellname, spellrank)
        if(self.unit ~= unit) then return end

        local castbar = self.Castbar
        if(castbar:IsShown()) then
                castbar.channeling = nil
                castbar.interrupt = nil

                castbar:SetValue(castbar.max)
                castbar:Hide()

                if(self.PostChannelStop) then
                        return self:PostChannelStop(event, unit, spellname, spellrank)
                end
        end
end

local onUpdate = function(self, elapsed)
        if self.casting then
                local duration = self.duration + elapsed
                if (duration >= self.max) then
                        self.casting = nil
                        self:Hide()

                        -- We temporary get our parent to do this.
                        local parent = self:GetParent()
                        if(parent.PostCastStop) then parent:PostCastStop('OnUpdate', parent.unit) end

                        return
                end

                if self.SafeZone then
                        local width = self:GetWidth()
                        local _, _, ms = GetNetStats()
                        -- MADNESS!
                        local safeZonePercent = (width / self.max) * (ms / 1e5)
                        if(safeZonePercent > 1) then safeZonePercent = 1 end
                        self.SafeZone:SetWidth(width * safeZonePercent)
                end

                if self.Time then
                        if self.delay ~= 0 then
                                if(self.CustomDelayText) then
                                        self:CustomDelayText(duration)
                                else
                                        self.Time:SetFormattedText("%.1f|cffff0000-%.1f|r", duration, self.delay)
                                end
                        else
                                if(self.CustomTimeText) then
                                        self:CustomTimeText(duration)
                                else
                                        self.Time:SetFormattedText("%.1f", duration)
                                end
                        end
                end

                self.duration = duration
                self:SetValue(duration)

                if self.Spark then
                        self.Spark:SetPoint("CENTER", self, "LEFT", (duration / self.max) * self:GetWidth(), 0)
                end
        elseif self.channeling then
                local duration = self.duration - elapsed

                if(duration <= 0) then
                        self.channeling = nil
                        self:Hide()

                        -- We temporary get our parent to do this.
                        local parent = self:GetParent()
                        if(parent.PostChannelStop) then parent:PostChannelStop('OnUpdate', parent.unit) end

                        return
                end

                if(self.SafeZone) then
                        local width = self:GetWidth()
                        local _, _, ms = GetNetStats()
                        -- MADNESS!
                        local safeZonePercent = (width / self.max) * (ms / 1e5)
                        if(safeZonePercent > 1) then safeZonePercent = 1 end
                        self.SafeZone:SetWidth(width * safeZonePercent)
                end


                if self.Time then
                        if self.delay ~= 0 then
                                if(self.CustomDelayText) then
                                        self:CustomDelayText(duration)
                                else
                                        self.Time:SetFormattedText("%.1f|cffff0000-%.1f|r", duration, self.delay)
                                end
                        else
                                if(self.CustomTimeText) then
                                        self:CustomTimeText(duration)
                                else
                                        self.Time:SetFormattedText("%.1f", duration)
                                end
                        end
                end

                self.duration = duration
                self:SetValue(duration)
                if self.Spark then
                        self.Spark:SetPoint("CENTER", self, "LEFT", (duration / self.max) * self:GetWidth(), 0)
                end
        else
                self.unitName = nil
                self.channeling = nil
                self:SetValue(1)
                self:Hide()
        end
end

local Enable = function(object, unit)
        local castbar = object.Castbar

        if(castbar) then
                if(not (unit and unit:match'%wtarget$')) then
                        object:RegisterEvent("UNIT_SPELLCAST_START", UNIT_SPELLCAST_START)
                        object:RegisterEvent("UNIT_SPELLCAST_FAILED", UNIT_SPELLCAST_FAILED)
                        object:RegisterEvent("UNIT_SPELLCAST_STOP", UNIT_SPELLCAST_STOP)
                        object:RegisterEvent("UNIT_SPELLCAST_INTERRUPTED", UNIT_SPELLCAST_INTERRUPTED)
                        object:RegisterEvent("UNIT_SPELLCAST_DELAYED", UNIT_SPELLCAST_DELAYED)
                        object:RegisterEvent("UNIT_SPELLCAST_CHANNEL_START", UNIT_SPELLCAST_CHANNEL_START)
                        object:RegisterEvent("UNIT_SPELLCAST_CHANNEL_UPDATE", UNIT_SPELLCAST_CHANNEL_UPDATE)
                        object:RegisterEvent("UNIT_SPELLCAST_CHANNEL_INTERRUPTED", 'UNIT_SPELLCAST_INTERRUPTED')
                        object:RegisterEvent("UNIT_SPELLCAST_CHANNEL_STOP", UNIT_SPELLCAST_CHANNEL_STOP)
                end

                castbar:SetScript("OnUpdate", object.OnCastbarUpdate or onUpdate)

                if object.unit == "player" then
                        CastingBarFrame:UnregisterAllEvents()
                        CastingBarFrame.Show = noop
                        CastingBarFrame:Hide()
                elseif(object.unit == 'pet') then
                        PetCastingBarFrame:UnregisterAllEvents()
                        PetCastingBarFrame.Show = noop
                        PetCastingBarFrame:Hide()
                end

                if(not castbar:GetStatusBarTexture()) then
                        castbar:SetStatusBarTexture[[Interface\TargetingFrame\UI-StatusBar]]
                end

                local spark = castbar.Spark
                if(spark and spark:IsObjectType'Texture' and not spark:GetTexture()) then
                        spark:SetTexture[[Interface\CastingBar\UI-CastingBar-Spark]]
                end

                local sz = castbar.SafeZone
                if(sz and sz:IsObjectType'Texture' and not sz:GetTexture()) then
                        sz:SetTexture(1, 0, 0)
                end

                castbar:Hide()

                return true
        end
end

local Disable = function(object, unit)
        local castbar = object.Castbar

        if(castbar) then
                object:UnregisterEvent("UNIT_SPELLCAST_START", UNIT_SPELLCAST_START)
                object:UnregisterEvent("UNIT_SPELLCAST_FAILED", UNIT_SPELLCAST_FAILED)
                object:UnregisterEvent("UNIT_SPELLCAST_STOP", UNIT_SPELLCAST_STOP)
                object:UnregisterEvent("UNIT_SPELLCAST_INTERRUPTED", UNIT_SPELLCAST_INTERRUPTED)
                object:UnregisterEvent("UNIT_SPELLCAST_DELAYED", UNIT_SPELLCAST_DELAYED)
                object:UnregisterEvent("UNIT_SPELLCAST_CHANNEL_START", UNIT_SPELLCAST_CHANNEL_START)
                object:UnregisterEvent("UNIT_SPELLCAST_CHANNEL_UPDATE", UNIT_SPELLCAST_CHANNEL_UPDATE)
                object:UnregisterEvent("UNIT_SPELLCAST_CHANNEL_INTERRUPTED", UNIT_SPELLCAST_CHANNEL_INTERRUPTED)
                object:UnregisterEvent("UNIT_SPELLCAST_CHANNEL_STOP", UNIT_SPELLCAST_CHANNEL_STOP)

                castbar:SetScript("OnUpdate", nil)
        end
end

oUF:AddElement('Castbar', function(...)
        UNIT_SPELLCAST_START(...)
        return UNIT_SPELLCAST_CHANNEL_START(...)
end, Enable, Disable)

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