mirror of
https://github.com/linux-man/LoveFrames.git
synced 2024-11-26 05:14:21 +00:00
334 lines
7.3 KiB
Lua
334 lines
7.3 KiB
Lua
--[[------------------------------------------------
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-- LÖVE Frames --
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-- By Nikolai Resokav --
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--]]------------------------------------------------
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-- scrollbar class
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scrollbar = class("scrollbar", base)
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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 scrollbar:initialize(parent, bartype)
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self.type = "scrollbar"
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self.bartype = bartype
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self.parent = parent
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self.x = 0
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self.y = 0
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self.staticx = 0
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self.staticy = 0
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self.maxx = 0
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self.maxy = 0
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self.clickx = 0
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self.clicky = 0
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self.starty = 0
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self.lastwidth = 0
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self.lastheight = 0
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self.lastx = 0
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self.lasty = 0
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self.internal = true
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self.hover = false
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self.dragging = false
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self.autoscroll = false
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self.internal = true
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if self.bartype == "vertical" then
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self.width = self.parent.width
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self.height = 5
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elseif self.bartype == "horizontal" then
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self.width = 5
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self.height = self.parent.height
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end
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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 scrollbar:update(dt)
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local visible = self.visible
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local alwaysupdate = self.alwaysupdate
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if visible == false then
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if alwaysupdate == false 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 x, y = love.mouse.getPosition()
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local bartype = self.bartype
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local cols = {}
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local basecols = {}
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local dragging = self.dragging
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if bartype == "vertical" then
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self.width = self.parent.width
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elseif bartype == "horizontal" then
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self.height = self.parent.height
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end
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if bartype == "vertical" then
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local parent = self.parent
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local listo = parent.parent.parent
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local height = parent.height * (listo.height/listo.itemheight)
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if height < 20 then
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self.height = 20
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else
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self.height = height
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end
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self.maxy = parent.y + (parent.height - self.height)
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self.x = parent.x + parent.width - self.width
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self.y = parent.y + self.staticy
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if dragging == true then
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if self.staticy ~= self.lasty then
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if listo.OnScroll then
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listo.OnScroll(listo)
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end
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self.lasty = self.staticy
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end
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self.staticy = self.starty + (y - self.clicky)
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end
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local space = (self.maxy - parent.y)
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local remaining = (0 + self.staticy)
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local percent = remaining/space
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local extra = listo.extra * percent
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local autoscroll = self.autoscroll
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local lastheight = self.lastheight
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listo.offsety = 0 + extra
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if self.staticy > space then
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self.staticy = space
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listo.offsety = listo.extra
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end
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if self.staticy < 0 then
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self.staticy = 0
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listo.offsety = 0
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end
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if autoscroll == true then
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if listo.itemheight ~= lastheight then
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self.lastheight = listo.itemheight
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self:Scroll(self.maxy)
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end
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end
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elseif bartype == "horizontal" then
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self.lastwidth = self.width
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local parent = self.parent
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local listo = self.parent.parent.parent
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local width = self.parent.width * (listo.width/listo.itemwidth)
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if width < 20 then
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self.width = 20
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else
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self.width = width
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end
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self.maxx = parent.x + (parent.width) - self.width
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self.x = parent.x + self.staticx
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self.y = parent.y + self.staticy
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if dragging == true then
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if self.staticx ~= self.lastx then
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if listo.OnScroll then
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listo.OnScroll(listo)
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end
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self.lastx = self.staticx
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end
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self.staticx = self.startx + (x - self.clickx)
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end
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local space = (self.maxx - parent.x)
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local remaining = (0 + self.staticx)
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local percent = remaining/space
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local extra = listo.extra * percent
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local autoscroll = self.autoscroll
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local lastwidth = self.lastwidth
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listo.offsetx = 0 + extra
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if self.staticx > space then
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self.staticx = space
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listo.offsetx = listo.extra
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end
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if self.staticx < 0 then
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self.staticx = 0
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listo.offsetx = 0
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end
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if autoscroll == true then
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if self.width ~= lastwidth then
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self.width = self.width
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self:Scroll(self.maxx)
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end
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end
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end
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if self.Update then
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self.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 scrollbar:draw()
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local visible = self.visible
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if visible == false then
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return
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end
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-- skin variables
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local index = loveframes.config["ACTIVESKIN"]
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local defaultskin = loveframes.config["DEFAULTSKIN"]
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local selfskin = self.skin
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local skin = loveframes.skins.available[selfskin] or loveframes.skins.available[index] or loveframes.skins.available[defaultskin]
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loveframes.drawcount = loveframes.drawcount + 1
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self.draworder = loveframes.drawcount
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if self.Draw ~= nil then
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self.Draw(self)
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else
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skin.DrawScrollBar(self)
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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 scrollbar:mousepressed(x, y, button)
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local visible = self.visible
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local hover = self.hover
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if visible == false then
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return
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end
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if hover == false then
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return
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end
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local baseparent = self:GetBaseParent()
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if baseparent.type == "frame" then
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baseparent:MakeTop()
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end
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local dragging = self.dragging
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if dragging == false then
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if button == "l" then
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self.starty = self.staticy
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self.startx = self.staticx
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self.clickx = x
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self.clicky = y
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self.dragging = true
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loveframes.hoverobject = self
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end
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end
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end
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--[[---------------------------------------------------------
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- func: mousereleased(x, y, button)
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- desc: called when the player releases a mouse button
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--]]---------------------------------------------------------
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function scrollbar:mousereleased(x, y, button)
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local visible = self.visible
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if visible == false then
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return
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end
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if self.dragging == true then
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self.dragging = false
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end
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end
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--[[---------------------------------------------------------
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- func: SetMaxX(x)
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- desc: sets the object's max x position
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--]]---------------------------------------------------------
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function scrollbar:SetMaxX(x)
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self.maxx = x
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end
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--[[---------------------------------------------------------
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- func: SetMaxY(y)
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- desc: sets the object's max y position
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--]]---------------------------------------------------------
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function scrollbar:SetMaxY(y)
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self.maxy = y
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end
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--[[---------------------------------------------------------
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- func: Scroll(amount)
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- desc: scrolls the object
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--]]---------------------------------------------------------
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function scrollbar:Scroll(amount)
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local bartype = self.bartype
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local listo = self.parent.parent.parent
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if bartype == "vertical" then
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local newy = (self.y + amount)
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if newy > self.maxy then
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self.staticy = self.maxy - self.parent.y
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elseif newy < self.parent.y then
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self.staticy = 0
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else
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self.staticy = self.staticy + amount
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end
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elseif bartype == "horizontal" then
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local newx = (self.x + amount)
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if newx > self.maxx then
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self.staticx = self.maxx - self.parent.x
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elseif newx < self.parent.x then
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self.staticx = 0
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else
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self.staticx = self.staticx + amount
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end
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end
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if listo.OnScroll then
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listo.OnScroll(listo)
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end
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end |