WoWInterface SVN NightWatch

[/] [trunk/] [libs/] [AceGUI-3.0/] [widgets/] [AceGUIWidget-Label.lua] - Rev 29

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--[[-----------------------------------------------------------------------------
Label Widget
Displays text and optionally an icon.
-------------------------------------------------------------------------------]]
local Type, Version = "Label", 21
local AceGUI = LibStub and LibStub("AceGUI-3.0", true)
if not AceGUI or (AceGUI:GetWidgetVersion(Type) or 0) >= Version then return end

-- Lua APIs
local max, select, pairs = math.max, select, pairs

-- WoW APIs
local CreateFrame, UIParent = CreateFrame, UIParent

-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
-- List them here for Mikk's FindGlobals script
-- GLOBALS: GameFontHighlightSmall

--[[-----------------------------------------------------------------------------
Support functions
-------------------------------------------------------------------------------]]

local function UpdateImageAnchor(self)
        if self.resizing then return end
        local frame = self.frame
        local width = frame.width or frame:GetWidth() or 0
        local image = self.image
        local label = self.label
        local height

        label:ClearAllPoints()
        image:ClearAllPoints()

        if self.imageshown then
                local imagewidth = image:GetWidth()
                if (width - imagewidth) < 200 or (label:GetText() or "") == "" then
                        -- image goes on top centered when less than 200 width for the text, or if there is no text
                        image:SetPoint("TOP")
                        label:SetPoint("TOP", image, "BOTTOM")
                        label:SetPoint("LEFT")
                        label:SetWidth(width)
                        height = image:GetHeight() + label:GetHeight()
                else
                        -- image on the left
                        image:SetPoint("TOPLEFT")
                        label:SetPoint("TOPLEFT", image, "TOPRIGHT", 4, 0)
                        label:SetWidth(width - imagewidth - 4)
                        height = max(image:GetHeight(), label:GetHeight())
                end
        else
                -- no image shown
                label:SetPoint("TOPLEFT")
                label:SetWidth(width)
                height = label:GetHeight()
        end
        
        self.resizing = true
        frame:SetHeight(height)
        frame.height = height
        self.resizing = nil
end

--[[-----------------------------------------------------------------------------
Methods
-------------------------------------------------------------------------------]]
local methods = {
        ["OnAcquire"] = function(self)
                -- set the flag to stop constant size updates
                self.resizing = true
                -- height is set dynamically by the text and image size
                self:SetWidth(200)
                self:SetText()
                self:SetImage(nil)
                self:SetImageSize(16, 16)
                self:SetColor()
                self:SetFontObject()

                -- reset the flag
                self.resizing = nil
                -- run the update explicitly
                UpdateImageAnchor(self)
        end,

        -- ["OnRelease"] = nil,

        ["OnWidthSet"] = function(self, width)
                UpdateImageAnchor(self)
        end,

        ["SetText"] = function(self, text)
                self.label:SetText(text)
                UpdateImageAnchor(self)
        end,

        ["SetColor"] = function(self, r, g, b)
                if not (r and g and b) then
                        r, g, b = 1, 1, 1
                end
                self.label:SetVertexColor(r, g, b)
        end,

        ["SetImage"] = function(self, path, ...)
                local image = self.image
                image:SetTexture(path)
                
                if image:GetTexture() then
                        self.imageshown = true
                        local n = select("#", ...)
                        if n == 4 or n == 8 then
                                image:SetTexCoord(...)
                        else
                                image:SetTexCoord(0, 1, 0, 1)
                        end
                else
                        self.imageshown = nil
                end
                UpdateImageAnchor(self)
        end,

        ["SetFont"] = function(self, font, height, flags)
                self.label:SetFont(font, height, flags)
        end,

        ["SetFontObject"] = function(self, font)
                self:SetFont((font or GameFontHighlightSmall):GetFont())
        end,

        ["SetImageSize"] = function(self, width, height)
                self.image:SetWidth(width)
                self.image:SetHeight(height)
                UpdateImageAnchor(self)
        end,
}

--[[-----------------------------------------------------------------------------
Constructor
-------------------------------------------------------------------------------]]
local function Constructor()
        local frame = CreateFrame("Frame", nil, UIParent)
        frame:Hide()

        local label = frame:CreateFontString(nil, "BACKGROUND", "GameFontHighlightSmall")
        label:SetJustifyH("LEFT")
        label:SetJustifyV("TOP")

        local image = frame:CreateTexture(nil, "BACKGROUND")

        -- create widget
        local widget = {
                label = label,
                image = image,
                frame = frame,
                type  = Type
        }
        for method, func in pairs(methods) do
                widget[method] = func
        end

        return AceGUI:RegisterAsWidget(widget)
end

AceGUI:RegisterWidgetType(Type, Constructor, Version)

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