World map overlay frame and SetMovable - WoWInterface
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09-13-20, 12:18 AM   #1
A Wyrmkin Dreamwalker
Join Date: Feb 2012
Posts: 52
World map overlay frame and SetMovable


I'm adding a new overlay frame to my world map that contains one frame.
I'm trying to allow the user to move this frame on drag and drop.

The problem I'm finding is that if the frame is not movable, whenever I minimize/maximize the world map my frame adapts to the world map container correcly remaining in the correct position, but as soon as I make it movable, the frame detaches from the world map and it doesn't adapt anymore, so if in the maximized version it appears in the top right corner of the map, in the minimize version it appears on top of my minimap.

Is it posible to keep my frame inside the world map and maintain the last position while maximized/minimized?

This is my code:

WorldMapFrame:AddOverlayFrame("MyTemplate", "FRAME", "CENTER", WorldMapFrame:GetCanvasContainer(), "TOP", 0, 0);

MyTemplateMixin = { };

function MyTemplateMixin:OnLoad() 
  self.MyFrame:SetScript("OnDragStart", function(self)
  self.MyFrame:SetScript("OnDragStop", function(self)

function MyTemplateMixin:Refresh()


MyFrameMixin = { }

function MyFrameMixin:OnMouseEnter()


function MyFrameMixin:OnMouseLeave()

And my template:
<?xml version="1.0"?>
<Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/..\FrameXML\UI.xsd">

  <Script file="MyTemplateMixin.lua"/>

  <Frame name="MyTemplate" frameStrata="HIGH" mixin="MyTemplateMixin" virtual="true">
    <Size x="175" y="32" />
    	   <Frame parentKey="MyFrame" mixin="MyFrameMixin">
		   <AbsDimension x="175" y="32"></AbsDimension>
		   <Anchor point="CENTER"/>
		   <Layer level="BACKGROUND">
			<Texture file="Interface\ChatFrame\UI-ChatInputBorder-Left">
					<AbsDimension x="75" y="32"></AbsDimension>
					<Anchor point="LEFT">
							<AbsDimension x="-15" y="0"></AbsDimension>
	  	<OnEnter method="OnMouseEnter"/>
	  	<OnLeave method="OnMouseLeave"/>
      <OnLoad method="OnLoad" />

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09-17-20, 08:15 PM   #2
An Aku'mai Servant
DahkCeles's Avatar
AddOn Author - Click to view addons
Join Date: Jun 2020
Posts: 36
If you are trying to build an overlay over the entire map frame (its borders, UI elements, etc.), then something like this might help:

Lua Code:
  1. local function myFunction()
  2.   local isMaximized = WorldMapFrame:IsMaximized()
  3.   -- do something
  4. end
  6. hooksecurefunc(WorldMapFrame.BorderFrame.MaximizeMinimizeFrame, "Maximize", myFunction)
  7. hooksecurefunc(WorldMapFrame.BorderFrame.MaximizeMinimizeFrame, "Minimize", myFunction)

If you are trying to build something on the map canvas itself which appears at an x/y coordinate and can be dragged to another x/y coordinate, then you should take a look at MapCanvas_DataProviderBase.lua.

Lua Code:
  1. MyAddonSavedVariables = { }
  3. MyPinMixin = CreateFromMixins(MapCanvasPinMixin)
  5. MyPinMixin:OnAcquired(id, x, y)
  6.     self:SetPosition(x,y)
  7.     self.id = id
  8. end
  10. MyPinMixin:OnLoad()
  11.     -- placeholder appearance for testing
  12.     self:SetSize(20, 20)
  13.     self.texture = self:CreateTexture(nil, "ARTWORK")
  14.     self.texture:SetTexture("Interface\\RaidFrame\\UI-RaidFrame-Threat")
  15.     self.texture:SetAllPoints()
  17.     -- draggable to a new map coordinate
  18.     self:RegisterForDrag("RightButton")
  19.     self:HookScript("OnDragEnd", function()
  20.         local x, y = self:GetMap():GetNormalizedCursorPosition()
  21.         x = x and Clamp(x, 0.05, 0.95) or 0.5  -- stay a little inside the box
  22.         y = y and Clamp(y, 0.05, 0.95) or 0.5
  23.         MyAddonSavedVariables[self.id]["x"] = x
  24.         MyAddonSavedVariables[self.id]["y"] = y
  25.         self:SetPosition(x,y)
  26.     end)
  27. end
  29. MyDataProvider = CreateFromMixins(MapCanvasDataProviderMixin)
  31. MyDataProvider:RefreshAllData()
  32.     self:RemoveAllData()
  33.     for id, coords in ipairs(MyAddonSavedVariables) do
  34.         self:GetMap():AcquirePin("MyPinTemplate", id, coords.x, coords.y)
  35.     end
  36. end
  38. WorldMapFrame:AddDataProvider(MyDataProvider)
  41. -- placeholder just to create a single pin for testing
  42. local listener = CreateFrame("Frame")
  43. listener:RegisterEvent("PLAYER_LOGIN")
  44. listener:SetScript("OnEvent", function()
  45.     if #MyAddonSavedVariables == 0 then
  46.         tinsert(MyAddonSavedVariables, {0.5, 0.5})
  47.     end
  48. end)

XML Code:
  1. <Ui>
  2.     <Frame name="MyPinTemplate" mixin="MyPinMixin" virtual="true"></Frame>
  3. </Ui>

toc Code:
  1. ## SavedVariables: MyAddonSavedVariables

Disclaimer: I just quickly wrote this together by taking snippets of a much longer file. I'm probably missing something to make it work.
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WoWInterface » Developer Discussions » Lua/XML Help » World map overlay frame and SetMovable

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