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questhelperredux/libs/AceGUI-3.0/widgets/AceGUIWidget-ScrollFrame.lua
Nathanial.C.Jones d417d5bc1a Initial import.
2010-10-24 21:17:33 +00:00

241 lignes
7,2 Kio
Lua

local AceGUI = LibStub("AceGUI-3.0")
-- Lua APIs
local pairs, assert, type = pairs, assert, type
local min, max, floor = math.min, math.max, math.floor
-- WoW APIs
local CreateFrame, UIParent = CreateFrame, UIParent
-------------
-- Widgets --
-------------
--[[
Widgets must provide the following functions
Acquire() - Called when the object is aquired, should set everything to a default hidden state
Release() - Called when the object is Released, should remove any anchors and hide the Widget
And the following members
frame - the frame or derivitive object that will be treated as the widget for size and anchoring purposes
type - the type of the object, same as the name given to :RegisterWidget()
Widgets contain a table called userdata, this is a safe place to store data associated with the wigdet
It will be cleared automatically when a widget is released
Placing values directly into a widget object should be avoided
If the Widget can act as a container for other Widgets the following
content - frame or derivitive that children will be anchored to
The Widget can supply the following Optional Members
]]
--------------------------
-- Scroll Frame --
--------------------------
do
local Type = "ScrollFrame"
local Version = 9
local function OnAcquire(self)
end
local function OnRelease(self)
self.frame:ClearAllPoints()
self.frame:Hide()
self.status = nil
-- do SetScroll after niling status, but before clearing localstatus
-- so the scroll value isnt populated back into status, but not kept in localstatus either
self:SetScroll(0)
for k in pairs(self.localstatus) do
self.localstatus[k] = nil
end
self.scrollframe:SetPoint("BOTTOMRIGHT",self.frame,"BOTTOMRIGHT",0,0)
self.scrollbar:Hide()
self.scrollBarShown = nil
self.content.height, self.content.width = nil, nil
end
local function SetScroll(self, value)
local status = self.status or self.localstatus
local viewheight = self.scrollframe:GetHeight()
local height = self.content:GetHeight()
local offset
if viewheight > height then
offset = 0
else
offset = floor((height - viewheight) / 1000.0 * value)
end
self.content:ClearAllPoints()
self.content:SetPoint("TOPLEFT", self.scrollframe, "TOPLEFT", 0, offset)
self.content:SetPoint("TOPRIGHT", self.scrollframe, "TOPRIGHT", 0, offset)
status.offset = offset
status.scrollvalue = value
end
local function MoveScroll(self, value)
local status = self.status or self.localstatus
local height, viewheight = self.scrollframe:GetHeight(), self.content:GetHeight()
if height > viewheight then
self.scrollbar:Hide()
else
self.scrollbar:Show()
local diff = height - viewheight
local delta = 1
if value < 0 then
delta = -1
end
self.scrollbar:SetValue(min(max(status.scrollvalue + delta*(1000/(diff/45)),0), 1000))
end
end
local function FixScroll(self)
if self.updateLock then return end
self.updateLock = true
local status = self.status or self.localstatus
local height, viewheight = self.scrollframe:GetHeight(), self.content:GetHeight()
local offset = status.offset or 0
local curvalue = self.scrollbar:GetValue()
if viewheight < height then
if self.scrollBarShown then
self.scrollBarShown = nil
self.scrollbar:Hide()
self.scrollbar:SetValue(0)
self.scrollframe:SetPoint("BOTTOMRIGHT",self.frame,"BOTTOMRIGHT",0,0)
self:DoLayout()
end
else
if not self.scrollBarShown then
self.scrollBarShown = true
self.scrollbar:Show()
self.scrollframe:SetPoint("BOTTOMRIGHT", self.frame,"BOTTOMRIGHT",-20,0)
self:DoLayout()
end
local value = (offset / (viewheight - height) * 1000)
if value > 1000 then value = 1000 end
self.scrollbar:SetValue(value)
self:SetScroll(value)
if value < 1000 then
self.content:ClearAllPoints()
self.content:SetPoint("TOPLEFT", self.scrollframe, "TOPLEFT", 0, offset)
self.content:SetPoint("TOPRIGHT", self.scrollframe, "TOPRIGHT", 0, offset)
status.offset = offset
end
end
self.updateLock = nil
end
local function OnMouseWheel(this, value)
this.obj:MoveScroll(value)
end
local function OnScrollValueChanged(this, value)
this.obj:SetScroll(value)
end
local function FixScrollOnUpdate(this)
this:SetScript("OnUpdate", nil)
this.obj:FixScroll()
end
local function OnSizeChanged(this)
this:SetScript("OnUpdate", FixScrollOnUpdate)
end
local function LayoutFinished(self, width, height)
self.content:SetHeight(height or 0 + 20)
self.scrollframe:SetScript("OnUpdate", FixScrollOnUpdate)
end
-- called to set an external table to store status in
local function SetStatusTable(self, status)
assert(type(status) == "table")
self.status = status
if not status.scrollvalue then
status.scrollvalue = 0
end
end
local function OnWidthSet(self, width)
local content = self.content
content.width = width
end
local function OnHeightSet(self, height)
local content = self.content
content.height = height
end
local function Constructor()
local frame = CreateFrame("Frame", nil, UIParent)
local self = {}
self.type = Type
self.OnRelease = OnRelease
self.OnAcquire = OnAcquire
self.MoveScroll = MoveScroll
self.FixScroll = FixScroll
self.SetScroll = SetScroll
self.LayoutFinished = LayoutFinished
self.SetStatusTable = SetStatusTable
self.OnWidthSet = OnWidthSet
self.OnHeightSet = OnHeightSet
self.localstatus = {}
self.frame = frame
frame.obj = self
--Container Support
local scrollframe = CreateFrame("ScrollFrame", nil, frame)
scrollframe.obj = self
scrollframe:SetPoint("TOPLEFT", frame, "TOPLEFT", 0, 0)
scrollframe:SetPoint("BOTTOMRIGHT", frame, "BOTTOMRIGHT", 0, 0)
scrollframe:EnableMouseWheel(true)
scrollframe:SetScript("OnMouseWheel", OnMouseWheel)
scrollframe:SetScript("OnSizeChanged", OnSizeChanged)
self.scrollframe = scrollframe
local content = CreateFrame("Frame", nil, scrollframe)
content.obj = self
content:SetPoint("TOPLEFT", scrollframe, "TOPLEFT", 0, 0)
content:SetPoint("TOPRIGHT", scrollframe, "TOPRIGHT", 0, 0)
content:SetHeight(400)
self.content = content
scrollframe:SetScrollChild(content)
local num = AceGUI:GetNextWidgetNum(Type)
local name = ("AceConfigDialogScrollFrame%dScrollBar"):format(num)
local scrollbar = CreateFrame("Slider", name, scrollframe, "UIPanelScrollBarTemplate")
scrollbar.obj = self
scrollbar:SetPoint("TOPLEFT", scrollframe, "TOPRIGHT", 4, -16)
scrollbar:SetPoint("BOTTOMLEFT", scrollframe, "BOTTOMRIGHT", 4, 16)
scrollbar:SetScript("OnValueChanged", OnScrollValueChanged)
scrollbar:SetMinMaxValues(0, 1000)
scrollbar:SetValueStep(1)
scrollbar:SetValue(0)
scrollbar:SetWidth(16)
scrollbar:Hide()
self.scrollbar = scrollbar
local scrollbg = scrollbar:CreateTexture(nil, "BACKGROUND")
scrollbg:SetAllPoints(scrollbar)
scrollbg:SetTexture(0, 0, 0, 0.4)
self.localstatus.scrollvalue = 0
--self:FixScroll()
AceGUI:RegisterAsContainer(self)
--AceGUI:RegisterAsWidget(self)
return self
end
AceGUI:RegisterWidgetType(Type,Constructor,Version)
end