pfUI/modules/map.lua

pfUI:RegisterModule("map", function ()
  table.insert(UISpecialFrames, "WorldMapFrame")

  local function UpdateTooltipScale()
    -- load scale data
    local tooltipscale = tonumber(C.appearance.worldmap.tooltipsize)
    local scale = WorldMapFrame:GetScale()

    -- apply tooltip scale
    if tooltipscale > 0 then
      WorldMapTooltip:SetScale(tooltipscale/scale)
    else
      WorldMapTooltip:SetScale(1)
    end
  end

  -- hook SetMapToCurrentZone to allow suppression
  local pfOrigSetMapToCurrentZone = _G.SetMapToCurrentZone
  _G.SetMapToCurrentZone = function()
    if C.appearance.worldmap.autozoneswitch == "0" and WorldMapFrame:IsShown() then return end
    pfOrigSetMapToCurrentZone()
  end

  -- register config update handler
  pfUI.map = { UpdateConfig = UpdateTooltipScale }

  function _G.ToggleWorldMap()
    WorldMapFrame:SetShown(not WorldMapFrame:IsShown())
  end

  C.position["WorldMapFrame"] = C.position["WorldMapFrame"] or { alpha = 1.0, scale = 0.7 }
  C.position["WorldMapFrame"].parent = nil
  local alpha = C.position["WorldMapFrame"].alpha
  local scale = C.position["WorldMapFrame"].scale

  local pfMapLoader = CreateFrame("Frame")
  pfMapLoader:RegisterEvent("PLAYER_ENTERING_WORLD")
  pfMapLoader:SetScript("OnEvent", function()
    -- do not load if other map addon is loaded
    if Cartographer then return end
    if METAMAP_TITLE then return end

    UIPanelWindows["WorldMapFrame"] = { area = "center" }

    WorldMapFrame:SetMovable(true)
    WorldMapFrame:EnableMouse(true)
    WorldMapFrame:RegisterForDrag("LeftButton")

    -- make sure the hooks get only applied once
    if not this.hooked then
      this.hooked = true

      WorldMapFrame:HookScript("OnShow", function()
        -- customize
        this:EnableKeyboard(false)
        this:EnableMouseWheel(1)

        -- set back to default scale
        WorldMapFrame:SetScale(scale or .85)

        -- always switch to current zone when opening the map
        pfOrigSetMapToCurrentZone()
      end)

      WorldMapFrame:HookScript("OnMouseWheel", function()
        if IsShiftKeyDown() then
          alpha = clamp(WorldMapFrame:GetAlpha() + arg1/10, 0.1, 1.0)
          WorldMapFrame:SetAlpha(alpha)
        end

        if IsControlKeyDown() then
          local oldscale = WorldMapFrame:GetScale()
          local point, rel, relpoint, offx, offy = WorldMapFrame:GetPoint()
          scale = clamp(oldscale + arg1/10, 0.1, 2.0)

          -- recalculate world frame position based on old and new scale
          if point == "TOPLEFT" and relpoint == "TOPLEFT" then
            offx = offx*oldscale/scale
            offy = offy*oldscale/scale
            -- Anchor to the parent (3-arg SetPoint) rather than re-using the frame
            -- GetPoint handed back. Re-anchoring to `rel` throws
            -- "<unnamed> is dependent on this" as soon as anything else has anchored
            -- itself to WorldMapFrame, which aborts the whole zoom handler. The
            -- parent-relative form is also what LoadMovable/SaveMovable already
            -- assume: SaveMovable stores only xpos/ypos, with no relative frame.
            WorldMapFrame:SetPoint(point, offx, offy)
          end

          WorldMapFrame:SetScale(scale)
          UpdateTooltipScale()
        end

        SaveMovable(this, true)
      end)

      WorldMapFrame:HookScript("OnDragStart", function()
        WorldMapFrame:StartMoving()
      end)

      WorldMapFrame:HookScript("OnDragStop",function()
        WorldMapFrame:StopMovingOrSizing()
        SaveMovable(this, true)
      end)
    end

    WorldMapFrame:SetAlpha(alpha)
    WorldMapFrame:SetScale(scale)
    UpdateTooltipScale()

    WorldMapFrame:ClearAllPoints()
    WorldMapFrame:SetPoint("CENTER", UIParent, "CENTER", 0, 0)
    local wmWidth, wmHeight = WorldMapButton:GetSize()
    WorldMapFrame:SetSize(wmWidth + 15, wmHeight + 55)
    LoadMovable(WorldMapFrame)

    -- skin
    WorldMapFrameCloseButton:SetPoint("TOPRIGHT", WorldMapFrame, "TOPRIGHT", 0, 0)
    CreateBackdrop(WorldMapFrame)
    CreateBackdropShadow(WorldMapFrame)

    BlackoutWorld:Hide()
    StripTextures(WorldMapFrame)

    SkinButton(WorldMapZoomOutButton)
    SkinCloseButton(WorldMapFrameCloseButton, WorldMapFrame, -3, -3)

    -- "Switch to current zone" toggle (left side of titlebar)
    if not pfUI.map.autozoneswitch then
      local btn = CreateFrame("CheckButton", "pfUI_map_autozoneswitch", WorldMapFrame, "UICheckButtonTemplate")
      btn:SetNormalTexture("")
      btn:SetPushedTexture("")
      btn:SetHighlightTexture("")
      btn.text = _G["pfUI_map_autozoneswitchText"]
      CreateBackdrop(btn, nil, true)
      btn:SetSize(14, 14)
      btn:SetPoint("RIGHT", WorldMapContinentDropDown, "LEFT", -8, 2)
      btn.text:ClearAllPoints()
      btn.text:SetPoint("RIGHT", btn, "LEFT", -4, 1)
      btn.text:SetJustifyH("RIGHT")
      btn.text:SetText(T["Switch to current zone"])
      btn:SetScript("OnShow", function()
        this:SetChecked(C.appearance.worldmap.autozoneswitch == "1")
      end)
      btn:SetScript("OnClick", function()
        if this:GetChecked() then
          C.appearance.worldmap.autozoneswitch = "1"
          pfOrigSetMapToCurrentZone()
        else
          C.appearance.worldmap.autozoneswitch = "0"
        end
      end)
      pfUI.map.autozoneswitch = btn
    end
    SkinDropDown(WorldMapContinentDropDown)
    SkinDropDown(WorldMapZoneDropDown)
    if WorldMapZoneMinimapDropDown then
      SkinDropDown(WorldMapZoneMinimapDropDown)
    end
    local point, anchor, anchorPoint, x, y = WorldMapZoneDropDown:GetPoint()
    WorldMapZoneDropDown:ClearAllPoints()
    WorldMapZoneDropDown:SetPoint(point, anchor, anchorPoint, x+8, y)

    -- coordinates
    if not WorldMapButton.coords then
      WorldMapButton.coords = CreateFrame("Frame", "pfWorldMapButtonCoords", WorldMapButton)
      WorldMapButton.coords.text = WorldMapButton.coords:CreateFontString(nil, "OVERLAY")
      WorldMapButton.coords.text:SetPoint("BOTTOMRIGHT", WorldMapButton, "BOTTOMRIGHT", -10, 10)
      WorldMapButton.coords.text:SetFont(pfUI.font_default, C.global.font_size, "OUTLINE")
      WorldMapButton.coords.text:SetTextColor(1, 1, 1)
      WorldMapButton.coords.text:SetJustifyH("RIGHT")

      WorldMapButton.coords:SetScript("OnUpdate", function()
        local width, height = WorldMapButton:GetSize()
        local mx, my = WorldMapButton:GetCenter()
        local scale  = WorldMapButton:GetEffectiveScale()
        local x, y   = GetCursorPosition()

        if mx and my then
          mx = (( x / scale ) - ( mx - width / 2)) / width * 100
          my = (( my + height / 2 ) - ( y / scale )) / height * 100
        end

        if mx and my and MouseIsOver(WorldMapButton) then
          WorldMapButton.coords.text:SetText(string.format('%.1f / %.1f', mx, my))
        else
          WorldMapButton.coords.text:SetText("")
        end
      end)
    end
  end)

  pfUI.map.loader = pfMapLoader
end)