Item Tooltip

[Kraeius]

Hi guys,

I need help with item tooltip alteration. Aim is simple, get itemLink on mouse-hover, process it somewhere, get data etc, then show requested new data at bottom of original tooltip.

Lets say, I mouse-over an item, get it's itemLink, processing it to get itemName, then I show in at the bottom line of original tooltip after a divider.

Can any of you throw an example?

Thanks

[votan]

Originally Posted by Kraeius Lets say, I mouse-over an item, get it's itemLink, processing it to get itemName, then I show in at the bottom line of original tooltip after a divider. Can any of you throw an example? Thanks

CritPercent from Garkin is a small tooltip-addon covering nearly all tooltips and therefore a good template.
Harven's Trait and Style from Harven and merlight does a bit more with the tooltip. (Adding header rows)
And Votan's Achievements Overview shows how to add custom controls.

Adding a divider is:

ZO_Tooltip_AddDivider(anyTooltipControl)

Is this what you are looking for?

[Kraeius]

I already checked many, in the end I could get itemLink of item that I'm hovering. Modifying tooltip is still troubling.

I prefer to understand what I'm doing. Exact code example of what I've asked would be more helpful.

I didn't check Ach. Overview though, gonna look it now. Thanks Votan.

[votan]

Originally Posted by Kraeius I already checked many, in the end I could get itemLink of item that I'm hovering. Modifying tooltip is still troubling. I prefer to understand what I'm doing. Exact code example of what I've asked would be more helpful.

Yes, of course:
There are some functions, defined in build-in code, which are used to setup the layout of a tooltip, e.g. :SetLink(itemLink) or :SetBagItem(bagId, slotIndex)
By hooking them, your code will be executed whenever someone (build-in or addon) shows a tooltip.
Garkin's code does it in a very compact, elegant way (not suprising )

local function TooltipHook(tooltipControl, method, linkFunc)
      local origMethod = tooltipControl[method] -- backup the original
     
      tooltipControl[method] = function(self, ...)
        local itemLink = linkFunc(...) -- Convert the given parameters to an itemLink
        -- pre hook stuff
        origMethod(self, ...) -- call the original
        -- post hook stuff
        ZO_Tooltip_AddDivider(tooltipControl)
        local name = GetItemLinkName(itemLink)
-- text, font, r, g, b, control-alignment, text modifier, text-alignment, use full width <- otherwise text alignment other than TEXT_ALIGN_LEFT has no visual effect
        tooltipControl:AddLine(zo_strformat(SI_TOOLTIP_ITEM_NAME, name), "ZoFontWinH4", 0.5, 1, 0.5, CENTER, MODIFY_TEXT_TYPE_NONE, TEXT_ALIGN_CENTER, true)
      end
    end

Now hook (hopefully) all these Set-functions relevant for your addon:

local function ReturnItemLink(itemLink)
      return itemLink
    end
     
    local function OnAddOnLoaded(eventCode, addonName)
      if addonName:find("^ZO_") then return end
      EVENT_MANAGER:UnregisterForEvent("BetterGlyphTooltip", eventCode)
     -- Tooltip control, function to hook, converter function
      TooltipHook(ItemTooltip, "SetBagItem", GetItemLink)
      TooltipHook(ItemTooltip, "SetTradeItem", GetTradeItemLink)
      TooltipHook(ItemTooltip, "SetBuybackItem", GetBuybackItemLink)
      TooltipHook(ItemTooltip, "SetStoreItem", GetStoreItemLink)
      TooltipHook(ItemTooltip, "SetAttachedMailItem", GetAttachedItemLink)
      TooltipHook(ItemTooltip, "SetLootItem", GetLootItemLink)
      TooltipHook(ItemTooltip, "SetTradingHouseItem", GetTradingHouseSearchResultItemLink)
      TooltipHook(ItemTooltip, "SetTradingHouseListing", GetTradingHouseListingItemLink)
      TooltipHook(ItemTooltip, "SetLink", ReturnItemLink)
     
      TooltipHook(PopupTooltip, "SetLink", ReturnItemLink)
     
      TooltipHook(ZO_EnchantingTopLevelTooltip, "SetPendingEnchantingItem", GetEnchantingResultingItemLink)
    end
    EVENT_MANAGER:RegisterForEvent("BetterGlyphTooltip", EVENT_ADD_ON_LOADED, OnAddOnLoaded)

[Kraeius]

That's just what I need, thank you so much Votan