LoveFrames/objects/internal/scrollable/scrollbutton.lua

--[[------------------------------------------------
	-- Love Frames - A GUI library for LOVE --
	-- Copyright (c) 2012 Kenny Shields --
--]]------------------------------------------------

-- scrollbutton clas
scrollbutton = class("scrollbutton", base)

--[[---------------------------------------------------------
	- func: initialize()
	- desc: initializes the object
--]]---------------------------------------------------------
function scrollbutton:initialize(scrolltype)

	self.type           = "scrollbutton"
	self.scrolltype     = scrolltype
	self.width          = 16
	self.height         = 16
	self.down           = false
	self.internal       = true
	self.OnClick        = function() end
	
	-- apply template properties to the object
	loveframes.templates.ApplyToObject(self)
	
end

--[[---------------------------------------------------------
	- func: update(deltatime)
	- desc: updates the object
--]]---------------------------------------------------------
function scrollbutton:update(dt)
	
	local visible      = self.visible
	local alwaysupdate = self.alwaysupdate
	
	if not visible then
		if not alwaysupdate then
			return
		end
	end
	
	self:CheckHover()
	
	local hover  = self.hover
	local parent = self.parent
	local base   = loveframes.base
	local update = self.Update
	
	if not hover then
		self.down = false
	else
		if loveframes.hoverobject == self then
			self.down = true
		end
	end
	
	if not self.down and loveframes.hoverobject == self then
		self.hover = true
	end
	
	-- move to parent if there is a parent
	if parent ~= base then
		self.x = parent.x + self.staticx
		self.y = parent.y + self.staticy
	end
	
	if update then
		update(self, dt)
	end

end

--[[---------------------------------------------------------
	- func: draw()
	- desc: draws the object
--]]---------------------------------------------------------
function scrollbutton:draw()
	
	local visible = self.visible
	
	if not visible then
		return
	end
	
	local skins         = loveframes.skins.available
	local skinindex     = loveframes.config["ACTIVESKIN"]
	local defaultskin   = loveframes.config["DEFAULTSKIN"]
	local selfskin      = self.skin
	local skin          = skins[selfskin] or skins[skinindex]
	local drawfunc      = skin.DrawScrollButton or skins[defaultskin].DrawScrollButton
	local draw          = self.Draw
	local drawcount     = loveframes.drawcount
	
	-- set the object's draw order
	self:SetDrawOrder()
		
	if draw then
		draw(self)
	else
		drawfunc(self)
	end
	
end

--[[---------------------------------------------------------
	- func: mousepressed(x, y, button)
	- desc: called when the player presses a mouse button
--]]---------------------------------------------------------
function scrollbutton:mousepressed(x, y, button)

	local visible = self.visible
	
	if not visible then
		return
	end
	
	local hover = self.hover
	
	if hover and button == "l" then
		
		local baseparent = self:GetBaseParent()
	
		if baseparent.type == "frame" then
			baseparent:MakeTop()
		end
	
		self.down = true
		loveframes.hoverobject = self
		
	end
	
end

--[[---------------------------------------------------------
	- func: mousereleased(x, y, button)
	- desc: called when the player releases a mouse button
--]]---------------------------------------------------------
function scrollbutton:mousereleased(x, y, button)
	
	local visible = self.visible
	
	if not visible then
		return
	end
	
	local hover   = self.hover
	local down    = self.down
	local onclick = self.OnClick
	
	if hover and down then
	
		if button == "l" then
			onclick(x, y, self)
		end
		
	end
	
	self.down = false

end

--[[---------------------------------------------------------
	- func: SetText(text)
	- desc: sets the object's text
--]]---------------------------------------------------------
function scrollbutton:SetText(text)

	return
	
end


--[[---------------------------------------------------------
	- func: GetScrollType()
	- desc: gets the object's scroll type
--]]---------------------------------------------------------
function scrollbutton:GetScrollType()

	return self.scrolltype
	
end