libs/AceGUI-3.0/widgets/AceGUIWidget-Label.lua

   1 --[[-----------------------------------------------------------------------------
   2 Label Widget
   3 Displays text and optionally an icon.
   4 -------------------------------------------------------------------------------]]
   5 local Type, Version = "Label", 23
   6 local AceGUI = LibStub and LibStub("AceGUI-3.0", true)
   7 if not AceGUI or (AceGUI:GetWidgetVersion(Type) or 0) >= Version then return end
   8
   9 -- Lua APIs
  10 local max, select, pairs = math.max, select, pairs
  11
  12 -- WoW APIs
  13 local CreateFrame, UIParent = CreateFrame, UIParent
  14
  15 -- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
  16 -- List them here for Mikk's FindGlobals script
  17 -- GLOBALS: GameFontHighlightSmall
  18
  19 --[[-----------------------------------------------------------------------------
  20 Support functions
  21 -------------------------------------------------------------------------------]]
  22
  23 local function UpdateImageAnchor(self)
  24         if self.resizing then return end
  25         local frame = self.frame
  26         local width = frame.width or frame:GetWidth() or 0
  27         local image = self.image
  28         local label = self.label
  29         local height
  30
  31         label:ClearAllPoints()
  32         image:ClearAllPoints()
  33
  34         if self.imageshown then
  35                 local imagewidth = image:GetWidth()
  36                 if (width - imagewidth) < 200 or (label:GetText() or "") == "" then
  37                         -- image goes on top centered when less than 200 width for the text, or if there is no text
  38                         image:SetPoint("TOP")
  39                         label:SetPoint("TOP", image, "BOTTOM")
  40                         label:SetPoint("LEFT")
  41                         label:SetWidth(width)
  42                         height = image:GetHeight() + label:GetHeight()
  43                 else
  44                         -- image on the left
  45                         image:SetPoint("TOPLEFT")
  46                         if image:GetHeight() > label:GetHeight() then
  47                                 label:SetPoint("LEFT", image, "RIGHT", 4, 0)
  48                         else
  49                                 label:SetPoint("TOPLEFT", image, "TOPRIGHT", 4, 0)
  50                         end
  51                         label:SetWidth(width - imagewidth - 4)
  52                         height = max(image:GetHeight(), label:GetHeight())
  53                 end
  54         else
  55                 -- no image shown
  56                 label:SetPoint("TOPLEFT")
  57                 label:SetWidth(width)
  58                 height = label:GetHeight()
  59         end
  60
  61         self.resizing = true
  62         frame:SetHeight(height)
  63         frame.height = height
  64         self.resizing = nil
  65 end
  66
  67 --[[-----------------------------------------------------------------------------
  68 Methods
  69 -------------------------------------------------------------------------------]]
  70 local methods = {
  71         ["OnAcquire"] = function(self)
  72                 -- set the flag to stop constant size updates
  73                 self.resizing = true
  74                 -- height is set dynamically by the text and image size
  75                 self:SetWidth(200)
  76                 self:SetText()
  77                 self:SetImage(nil)
  78                 self:SetImageSize(16, 16)
  79                 self:SetColor()
  80                 self:SetFontObject()
  81
  82                 -- reset the flag
  83                 self.resizing = nil
  84                 -- run the update explicitly
  85                 UpdateImageAnchor(self)
  86         end,
  87
  88         -- ["OnRelease"] = nil,
  89
  90         ["OnWidthSet"] = function(self, width)
  91                 UpdateImageAnchor(self)
  92         end,
  93
  94         ["SetText"] = function(self, text)
  95                 self.label:SetText(text)
  96                 UpdateImageAnchor(self)
  97         end,
  98
  99         ["SetColor"] = function(self, r, g, b)
 100                 if not (r and g and b) then
 101                         r, g, b = 1, 1, 1
 102                 end
 103                 self.label:SetVertexColor(r, g, b)
 104         end,
 105
 106         ["SetImage"] = function(self, path, ...)
 107                 local image = self.image
 108                 image:SetTexture(path)
 109
 110                 if image:GetTexture() then
 111                         self.imageshown = true
 112                         local n = select("#", ...)
 113                         if n == 4 or n == 8 then
 114                                 image:SetTexCoord(...)
 115                         else
 116                                 image:SetTexCoord(0, 1, 0, 1)
 117                         end
 118                 else
 119                         self.imageshown = nil
 120                 end
 121                 UpdateImageAnchor(self)
 122         end,
 123
 124         ["SetFont"] = function(self, font, height, flags)
 125                 self.label:SetFont(font, height, flags)
 126         end,
 127
 128         ["SetFontObject"] = function(self, font)
 129                 self:SetFont((font or GameFontHighlightSmall):GetFont())
 130         end,
 131
 132         ["SetImageSize"] = function(self, width, height)
 133                 self.image:SetWidth(width)
 134                 self.image:SetHeight(height)
 135                 UpdateImageAnchor(self)
 136         end,
 137 }
 138
 139 --[[-----------------------------------------------------------------------------
 140 Constructor
 141 -------------------------------------------------------------------------------]]
 142 local function Constructor()
 143         local frame = CreateFrame("Frame", nil, UIParent)
 144         frame:Hide()
 145
 146         local label = frame:CreateFontString(nil, "BACKGROUND", "GameFontHighlightSmall")
 147         label:SetJustifyH("LEFT")
 148         label:SetJustifyV("TOP")
 149
 150         local image = frame:CreateTexture(nil, "BACKGROUND")
 151
 152         -- create widget
 153         local widget = {
 154                 label = label,
 155                 image = image,
 156                 frame = frame,
 157                 type  = Type
 158         }
 159         for method, func in pairs(methods) do
 160                 widget[method] = func
 161         end
 162
 163         return AceGUI:RegisterAsWidget(widget)
 164 end
 165
 166 AceGUI:RegisterWidgetType(Type, Constructor, Version)