808 lines
19 KiB
Lua
808 lines
19 KiB
Lua
--[[------------------------------------------------
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-- Love Frames - A GUI library for LOVE --
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-- Copyright (c) 2012-2014 Kenny Shields --
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--]]------------------------------------------------
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return function(loveframes)
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---------- module start ----------
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-- list object
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local newobject = loveframes.NewObject("list", "loveframes_object_list", true)
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--[[---------------------------------------------------------
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- func: initialize()
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- desc: initializes the object
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--]]---------------------------------------------------------
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function newobject:initialize()
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self.type = "list"
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self.display = "vertical"
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self.width = 300
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self.height = 150
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self.clickx = 0
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self.clicky = 0
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self.padding = 0
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self.spacing = 0
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self.offsety = 0
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self.offsetx = 0
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self.extrawidth = 0
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self.extraheight = 0
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self.buttonscrollamount = 0.10
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self.mousewheelscrollamount = 10
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self.internal = false
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self.hbar = false
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self.vbar = false
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self.autoscroll = false
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self.horizontalstacking = false
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self.dtscrolling = false
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self.internals = {}
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self.children = {}
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self.OnScroll = nil
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self:SetDrawFunc()
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end
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--[[---------------------------------------------------------
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- func: update(deltatime)
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- desc: updates the object
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--]]---------------------------------------------------------
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function newobject:update(dt)
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local state = loveframes.state
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local selfstate = self.state
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if state ~= selfstate then
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return
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end
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local visible = self.visible
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local alwaysupdate = self.alwaysupdate
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if not visible then
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if not alwaysupdate then
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return
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end
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end
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self:CheckHover()
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local internals = self.internals
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local children = self.children
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local display = self.display
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local parent = self.parent
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local horizontalstacking = self.horizontalstacking
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local base = loveframes.base
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local update = self.Update
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-- move to parent if there is a parent
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if parent ~= base then
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self.x = self.parent.x + self.staticx
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self.y = self.parent.y + self.staticy
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end
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for k, v in ipairs(internals) do
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v:update(dt)
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for _, p in pairs(self:GetParents()) do
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v.x = v.x - (p.offsetx or 0)
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v.y = v.y - (p.offsety or 0)
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end
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end
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local x = self.x
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local y = self.y
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local width = self.width
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local height = self.height
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local offsetx = self.offsetx
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local offsety = self.offsety
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for k, v in ipairs(children) do
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v:update(dt)
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v:SetClickBounds(x, y, width, height)
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v.x = (v.parent.x + v.staticx) - offsetx
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v.y = (v.parent.y + v.staticy) - offsety
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for _, p in pairs(self:GetParents()) do
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v.x = v.x - (p.offsetx or 0)
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v.y = v.y - (p.offsety or 0)
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end
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if display == "vertical" then
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if v.lastheight ~= v.height then
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self:CalculateSize()
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self:RedoLayout()
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end
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end
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end
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if update then
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update(self, dt)
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end
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end
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--[[---------------------------------------------------------
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- func: draw()
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- desc: draws the object
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--]]---------------------------------------------------------
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function newobject:draw()
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if loveframes.state ~= self.state then
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return
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end
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if not self.visible then
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return
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end
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local x = self.x
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local y = self.y
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local width = self.width
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local height = self.height
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local stencilfunc = function()
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love.graphics.rectangle("fill", x, y, width, height)
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end
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self:SetDrawOrder()
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local drawfunc = self.Draw or self.drawfunc
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if drawfunc then
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drawfunc(self)
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end
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love.graphics.stencil(stencilfunc)
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love.graphics.setStencilTest("greater", 0)
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local children = self.children
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if children then
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for k, v in ipairs(children) do
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local col = loveframes.BoundingBox(x, v.x, y, v.y, width, v.width, height, v.height)
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if col then
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v:draw()
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end
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end
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end
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love.graphics.setStencilTest()
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local drawfunc = self.DrawOver or self.drawoverfunc
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if drawfunc then
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drawfunc(self)
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end
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local internals = self.internals
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if internals then
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for k, v in ipairs(internals) do
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v:draw()
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end
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end
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end
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--[[---------------------------------------------------------
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- func: mousepressed(x, y, button)
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- desc: called when the player presses a mouse button
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--]]---------------------------------------------------------
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function newobject:mousepressed(x, y, button)
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local state = loveframes.state
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local selfstate = self.state
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if state ~= selfstate then
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return
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end
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local visible = self.visible
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if not visible then
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return
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end
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local hover = self.hover
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local children = self.children
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local internals = self.internals
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if hover and button == 1 then
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local baseparent = self:GetBaseParent()
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if baseparent and baseparent.type == "frame" then
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baseparent:MakeTop()
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end
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end
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for k, v in ipairs(internals) do
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v:mousepressed(x, y, button)
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end
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for k, v in ipairs(children) do
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v:mousepressed(x, y, button)
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end
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end
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--[[---------------------------------------------------------
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- func: wheelmoved(x, y)
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- desc: called when the player moves a mouse wheel
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--]]---------------------------------------------------------
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function newobject:wheelmoved(x, y)
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local toplist = self:IsTopList()
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local vbar = self.vbar
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local hbar = self.hbar
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local scrollamount = self.mousewheelscrollamount
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if (vbar or hbar) and toplist then
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local bar = self:GetScrollBar()
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local dtscrolling = self.dtscrolling
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if dtscrolling then
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local dt = love.timer.getDelta()
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bar:Scroll(-y * scrollamount * dt)
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else
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bar:Scroll(-y * scrollamount)
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end
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end
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end
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--[[---------------------------------------------------------
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- func: AddItem(object)
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- desc: adds an item to the object
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--]]---------------------------------------------------------
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function newobject:AddItem(object)
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local objtype = object.type
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if objtype == "frame" then
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return
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end
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local children = self.children
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local state = self.state
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-- remove the item object from its current parent and make its new parent the list object
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object:Remove()
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object.parent = self
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object:SetState(state)
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-- insert the item object into the list object's children table
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table.insert(children, object)
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-- resize the list and redo its layout
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self:CalculateSize()
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self:RedoLayout()
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return self
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end
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--[[---------------------------------------------------------
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- func: RemoveItem(object or number)
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- desc: removes an item from the object
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--]]---------------------------------------------------------
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function newobject:RemoveItem(data)
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local dtype = type(data)
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if dtype == "number" then
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local children = self.children
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local item = children[data]
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if item then
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item:Remove()
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end
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else
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data:Remove()
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end
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self:CalculateSize()
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self:RedoLayout()
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return self
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end
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--[[---------------------------------------------------------
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- func: CalculateSize()
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- desc: calculates the size of the object's children
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--]]---------------------------------------------------------
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function newobject:CalculateSize()
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local numitems = #self.children
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local height = self.height
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local width = self.width
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local padding = self.padding
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local spacing = self.spacing
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local itemheight = self.padding
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local itemwidth = self.padding
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local display = self.display
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local vbar = self.vbar
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local hbar = self.hbar
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local internals = self.internals
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local children = self.children
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local horizontalstacking = self.horizontalstacking
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if display == "vertical" then
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if horizontalstacking then
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local curwidth = 0
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local maxwidth = width - padding * 2
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local prevheight = 0
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local scrollbar = self:GetScrollBar()
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if scrollbar then
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maxwidth = maxwidth - scrollbar.width
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end
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for k, v in ipairs(children) do
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if v.height > prevheight then
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prevheight = v.height
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end
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curwidth = curwidth + v.width + spacing
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if children[k + 1] then
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if curwidth + children[k + 1].width > maxwidth then
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curwidth = padding
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itemheight = itemheight + prevheight + spacing
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prevheight = 0
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end
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else
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itemheight = itemheight + prevheight + padding
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end
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end
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self.itemheight = itemheight
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else
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for k, v in ipairs(children) do
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itemheight = itemheight + v.height + spacing
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end
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self.itemheight = (itemheight - spacing) + padding
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end
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local itemheight = self.itemheight
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if itemheight > height then
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self.extraheight = itemheight - height
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if not vbar then
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local scrollbar = loveframes.objects["scrollbody"]:new(self, display)
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table.insert(internals, scrollbar)
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self.vbar = true
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self:GetScrollBar().autoscroll = self.autoscroll
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end
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else
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if vbar then
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local bar = internals[1]
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bar:Remove()
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self.vbar = false
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self.offsety = 0
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end
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end
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elseif display == "horizontal" then
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for k, v in ipairs(children) do
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itemwidth = itemwidth + v.width + spacing
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end
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self.itemwidth = (itemwidth - spacing) + padding
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local itemwidth = self.itemwidth
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if itemwidth > width then
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self.extrawidth = itemwidth - width
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if not hbar then
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local scrollbar = loveframes.objects["scrollbody"]:new(self, display)
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table.insert(internals, scrollbar)
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self.hbar = true
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self:GetScrollBar().autoscroll = self.autoscroll
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end
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else
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if hbar then
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local bar = internals[1]
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bar:Remove()
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self.hbar = false
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self.offsetx = 0
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end
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end
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end
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return self
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end
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--[[---------------------------------------------------------
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- func: RedoLayout()
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- desc: used to redo the layout of the object
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--]]---------------------------------------------------------
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function newobject:RedoLayout()
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local width = self.width
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local height = self.height
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local children = self.children
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local internals = self.internals
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local padding = self.padding
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local spacing = self.spacing
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local starty = padding
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local startx = padding
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local vbar = self.vbar
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local hbar = self.hbar
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local display = self.display
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local horizontalstacking = self.horizontalstacking
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local scrollbody, scrollbodywidth, scrollbodyheight
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if vbar or hbar then
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scrollbody = internals[1]
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scrollbodywidth = scrollbody.width
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scrollbodyheight = scrollbody.height
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end
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if #children > 0 then
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if display == "vertical" then
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if horizontalstacking then
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local curwidth = padding
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local curheight = padding
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local maxwidth = self.width - padding * 2
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local prevheight = 0
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local scrollbar = self:GetScrollBar()
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if scrollbar then
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maxwidth = maxwidth - scrollbar.width
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end
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for k, v in ipairs(children) do
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local itemheight = v.height
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v.lastheight = itemheight
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v.staticx = curwidth
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v.staticy = curheight
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if v.height > prevheight then
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prevheight = v.height
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end
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if children[k + 1] then
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curwidth = curwidth + v.width + spacing
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if curwidth + (children[k + 1].width) > maxwidth then
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curwidth = padding
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curheight = curheight + prevheight + spacing
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prevheight = 0
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end
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end
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end
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else
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for k, v in ipairs(children) do
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local itemwidth = v.width
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local itemheight = v.height
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local retainsize = v.retainsize
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v.staticx = padding
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v.staticy = starty
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v.lastheight = itemheight
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if vbar then
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if itemwidth + padding > (width - scrollbodywidth) then
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v:SetWidth((width - scrollbodywidth) - (padding * 2))
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end
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if not retainsize then
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v:SetWidth((width - scrollbodywidth) - (padding * 2))
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end
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scrollbody.staticx = width - scrollbodywidth
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scrollbody.height = height
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else
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if not retainsize then
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v:SetWidth(width - (padding * 2))
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end
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end
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starty = starty + itemheight
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starty = starty + spacing
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end
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end
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elseif display == "horizontal" then
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for k, v in ipairs(children) do
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local itemwidth = v.width
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local itemheight = v.height
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local retainsize = v.retainsize
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v.staticx = startx
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v.staticy = padding
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if hbar then
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if itemheight + padding > (height - scrollbodyheight) then
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v:SetHeight((height - scrollbodyheight) - (padding * 2))
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end
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if not retainsize then
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v:SetHeight((height - scrollbodyheight) - (padding * 2))
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end
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scrollbody.staticy = height - scrollbodyheight
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scrollbody.width = width
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else
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if not retainsize then
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v:SetHeight(height - (padding * 2))
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end
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end
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startx = startx + itemwidth
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startx = startx + spacing
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end
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end
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end
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return self
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end
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--[[---------------------------------------------------------
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- func: SetDisplayType(type)
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- desc: sets the object's display type
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--]]---------------------------------------------------------
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function newobject:SetDisplayType(type)
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local children = self.children
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local numchildren = #children
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self.display = type
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self.vbar = false
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self.hbar = false
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self.offsetx = 0
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self.offsety = 0
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self.internals = {}
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if numchildren > 0 then
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self:CalculateSize()
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self:RedoLayout()
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end
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return self
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end
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--[[---------------------------------------------------------
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- func: GetDisplayType()
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- desc: gets the object's display type
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--]]---------------------------------------------------------
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function newobject:GetDisplayType()
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return self.display
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end
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--[[---------------------------------------------------------
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- func: SetPadding(amount)
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- desc: sets the object's padding
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--]]---------------------------------------------------------
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function newobject:SetPadding(amount)
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local children = self.children
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local numchildren = #children
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self.padding = amount
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if numchildren > 0 then
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self:CalculateSize()
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self:RedoLayout()
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end
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return self
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end
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--[[---------------------------------------------------------
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- func: SetSpacing(amount)
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- desc: sets the object's spacing
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--]]---------------------------------------------------------
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function newobject:SetSpacing(amount)
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local children = self.children
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local numchildren = #children
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self.spacing = amount
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if numchildren > 0 then
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self:CalculateSize()
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self:RedoLayout()
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end
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return self
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end
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--[[---------------------------------------------------------
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- func: Clear()
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- desc: removes all of the object's children
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--]]---------------------------------------------------------
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function newobject:Clear()
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self.children = {}
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self:CalculateSize()
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self:RedoLayout()
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return self
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end
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--[[---------------------------------------------------------
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- func: SetWidth(width, relative)
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- desc: sets the object's width
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--]]---------------------------------------------------------
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function newobject:SetWidth(width, relative)
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if relative then
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self.width = self.parent.width * width
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else
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self.width = width
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end
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self:CalculateSize()
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self:RedoLayout()
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return self
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end
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--[[---------------------------------------------------------
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- func: SetHeight(height, relative)
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- desc: sets the object's height
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--]]---------------------------------------------------------
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function newobject:SetHeight(height, relative)
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if relative then
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self.height = self.parent.height * height
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else
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self.height = height
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end
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self:CalculateSize()
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self:RedoLayout()
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return self
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end
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--[[---------------------------------------------------------
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- func: SetSize(width, height, r1, r2)
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- desc: sets the object's size
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--]]---------------------------------------------------------
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function newobject:SetSize(width, height, r1, r2)
|
|
|
|
if r1 then
|
|
self.width = self.parent.width * width
|
|
else
|
|
self.width = width
|
|
end
|
|
|
|
if r2 then
|
|
self.height = self.parent.height * height
|
|
else
|
|
self.height = height
|
|
end
|
|
|
|
self:CalculateSize()
|
|
self:RedoLayout()
|
|
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetScrollBar()
|
|
- desc: gets the object's scroll bar
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetScrollBar()
|
|
|
|
local vbar = self.vbar
|
|
local hbar = self.hbar
|
|
local internals = self.internals
|
|
|
|
if vbar or hbar then
|
|
local scrollbody = internals[1]
|
|
local scrollarea = scrollbody.internals[1]
|
|
local scrollbar = scrollarea.internals[1]
|
|
return scrollbar
|
|
else
|
|
return false
|
|
end
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: SetAutoScroll(bool)
|
|
- desc: sets whether or not the list's scrollbar should
|
|
auto scroll to the bottom when a new object is
|
|
added to the list
|
|
--]]---------------------------------------------------------
|
|
function newobject:SetAutoScroll(bool)
|
|
|
|
local scrollbar = self:GetScrollBar()
|
|
|
|
self.autoscroll = bool
|
|
|
|
if scrollbar then
|
|
scrollbar.autoscroll = bool
|
|
end
|
|
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetAutoScroll()
|
|
- desc: gets whether or not the list's scrollbar should
|
|
auto scroll to the bottom when a new object is
|
|
added to the list
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetAutoScroll()
|
|
|
|
return self.autoscroll
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: SetButtonScrollAmount(speed)
|
|
- desc: sets the scroll amount of the object's scrollbar
|
|
buttons
|
|
--]]---------------------------------------------------------
|
|
function newobject:SetButtonScrollAmount(amount)
|
|
|
|
self.buttonscrollamount = amount
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetButtonScrollAmount()
|
|
- desc: gets the scroll amount of the object's scrollbar
|
|
buttons
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetButtonScrollAmount()
|
|
|
|
return self.buttonscrollamount
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: SetMouseWheelScrollAmount(amount)
|
|
- desc: sets the scroll amount of the mouse wheel
|
|
--]]---------------------------------------------------------
|
|
function newobject:SetMouseWheelScrollAmount(amount)
|
|
|
|
self.mousewheelscrollamount = amount
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetMouseWheelScrollAmount()
|
|
- desc: gets the scroll amount of the mouse wheel
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetButtonScrollAmount()
|
|
|
|
return self.mousewheelscrollamount
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: EnableHorizontalStacking(bool)
|
|
- desc: enables or disables horizontal stacking
|
|
--]]---------------------------------------------------------
|
|
function newobject:EnableHorizontalStacking(bool)
|
|
|
|
local children = self.children
|
|
local numchildren = #children
|
|
|
|
self.horizontalstacking = bool
|
|
|
|
if numchildren > 0 then
|
|
self:CalculateSize()
|
|
self:RedoLayout()
|
|
end
|
|
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetHorizontalStacking()
|
|
- desc: gets whether or not the object allows horizontal
|
|
stacking
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetHorizontalStacking()
|
|
|
|
return self.horizontalstacking
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: SetDTScrolling(bool)
|
|
- desc: sets whether or not the object should use delta
|
|
time when scrolling
|
|
--]]---------------------------------------------------------
|
|
function newobject:SetDTScrolling(bool)
|
|
|
|
self.dtscrolling = bool
|
|
return self
|
|
|
|
end
|
|
|
|
--[[---------------------------------------------------------
|
|
- func: GetDTScrolling()
|
|
- desc: gets whether or not the object should use delta
|
|
time when scrolling
|
|
--]]---------------------------------------------------------
|
|
function newobject:GetDTScrolling()
|
|
|
|
return self.dtscrolling
|
|
|
|
end
|
|
|
|
---------- module end ----------
|
|
end
|