mirror of
https://github.com/linux-man/LoveFrames.git
synced 2024-11-18 16:04:22 +00:00
534 lines
13 KiB
Lua
534 lines
13 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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-- slider object
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local newobject = loveframes.NewObject("slider", "loveframes_object_slider", 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 = "slider"
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self.text = "Slider"
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self.slidetype = "horizontal"
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self.width = 5
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self.height = 5
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self.max = 10
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self.min = 0
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self.value = 0
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self.decimals = 5
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self.scrollincrease = 1
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self.scrolldecrease = 1
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self.scrollable = true
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self.enabled = true
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self.internal = false
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self.internals = {}
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self.OnValueChanged = nil
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self.OnRelease = nil
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-- create the slider button
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local sliderbutton = loveframes.objects["sliderbutton"]:new(self)
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sliderbutton.state = self.state
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table.insert(self.internals, sliderbutton)
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-- set initial value to minimum
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self:SetValue(self.min)
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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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local internals = self.internals
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local sliderbutton = internals[1]
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local parent = self.parent
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local base = loveframes.base
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local update = self.Update
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self:CheckHover()
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-- move to parent if there is a parent
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if parent ~= base and parent.type ~= "list" 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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if sliderbutton then
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local slidetype = self.slidetype
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local buttonwidth = sliderbutton.width
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local buttonheight = sliderbutton.height
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if slidetype == "horizontal" then
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self.height = buttonheight
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elseif slidetype == "vertical" then
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self.width = buttonwidth
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end
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end
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-- update internals
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for k, v in ipairs(self.internals) do
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v:update(dt)
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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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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 internals = self.internals
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local skins = loveframes.skins.available
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local skinindex = 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 = skins[selfskin] or skins[skinindex]
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local drawfunc = skin.DrawSlider or skins[defaultskin].DrawSlider
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local draw = self.Draw
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local drawcount = loveframes.drawcount
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-- set the object's draw order
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self:SetDrawOrder()
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if draw then
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draw(self)
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else
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drawfunc(self)
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end
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-- draw internals
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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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--[[---------------------------------------------------------
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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 enabled = self.enabled
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if not enabled then
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return
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end
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local internals = self.internals
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local hover = self.hover
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local slidetype = self.slidetype
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local scrollable = self.scrollable
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if hover and button == "l" then
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if slidetype == "horizontal" then
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local xpos = x - self.x
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local button = internals[1]
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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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button:MoveToX(xpos)
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button.down = true
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button.dragging = true
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button.startx = button.staticx
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button.clickx = x
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elseif slidetype == "vertical" then
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local ypos = y - self.y
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local button = internals[1]
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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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button:MoveToY(ypos)
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button.down = true
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button.dragging = true
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button.starty = button.staticy
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button.clicky = y
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end
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elseif hover and scrollable and button == "wu" then
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local value = self.value
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local increase = self.scrollincrease
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local newvalue = value + increase
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self:SetValue(newvalue)
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elseif hover and scrollable and button == "wd" then
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local value = self.value
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local decrease = self.scrolldecrease
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local newvalue = value - decrease
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self:SetValue(newvalue)
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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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end
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--[[---------------------------------------------------------
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- func: SetValue(value)
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- desc: sets the object's value
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--]]---------------------------------------------------------
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function newobject:SetValue(value)
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if value > self.max then
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return
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end
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if value < self.min then
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return
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end
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local decimals = self.decimals
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local newval = loveframes.util.Round(value, decimals)
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local internals = self.internals
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local onvaluechanged = self.OnValueChanged
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-- set the new value
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self.value = newval
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-- slider button object
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local sliderbutton = internals[1]
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local slidetype = self.slidetype
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local width = self.width
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local height = self.height
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local min = self.min
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local max = self.max
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-- move the slider button to the new position
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if slidetype == "horizontal" then
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local xpos = width * ((newval - min) / (max - min))
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sliderbutton:MoveToX(xpos)
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elseif slidetype == "vertical" then
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local ypos = height - height * ((newval - min) / (max - min))
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sliderbutton:MoveToY(ypos)
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end
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-- call OnValueChanged
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if onvaluechanged then
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onvaluechanged(self, newval)
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end
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end
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--[[---------------------------------------------------------
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- func: GetValue()
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- desc: gets the object's value
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--]]---------------------------------------------------------
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function newobject:GetValue()
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return self.value
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end
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--[[---------------------------------------------------------
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- func: SetMax(max)
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- desc: sets the object's maximum value
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--]]---------------------------------------------------------
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function newobject:SetMax(max)
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self.max = max
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if self.value > self.max then
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self.value = self.max
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end
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end
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--[[---------------------------------------------------------
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- func: GetMax()
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- desc: gets the object's maximum value
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--]]---------------------------------------------------------
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function newobject:GetMax()
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return self.max
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end
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--[[---------------------------------------------------------
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- func: SetMin(min)
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- desc: sets the object's minimum value
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--]]---------------------------------------------------------
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function newobject:SetMin(min)
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self.min = min
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if self.value < self.min then
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self.value = self.min
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end
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end
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--[[---------------------------------------------------------
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- func: GetMin()
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- desc: gets the object's minimum value
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--]]---------------------------------------------------------
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function newobject:GetMin()
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return self.min
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end
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--[[---------------------------------------------------------
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- func: SetMinMax()
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- desc: sets the object's minimum and maximum values
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--]]---------------------------------------------------------
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function newobject:SetMinMax(min, max)
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self.min = min
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self.max = max
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if self.value > self.max then
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self.value = self.max
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end
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if self.value < self.min then
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self.value = self.min
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end
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end
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--[[---------------------------------------------------------
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- func: GetMinMax()
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- desc: gets the object's minimum and maximum values
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--]]---------------------------------------------------------
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function newobject:GetMinMax()
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return self.min, self.max
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end
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--[[---------------------------------------------------------
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- func: SetText(name)
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- desc: sets the objects's text
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--]]---------------------------------------------------------
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function newobject:SetText(text)
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self.text = text
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end
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--[[---------------------------------------------------------
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- func: GetText()
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- desc: gets the objects's text
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--]]---------------------------------------------------------
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function newobject:GetText()
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return self.text
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end
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--[[---------------------------------------------------------
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- func: SetDecimals(decimals)
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- desc: sets how many decimals the object's value
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can have
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--]]---------------------------------------------------------
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function newobject:SetDecimals(decimals)
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self.decimals = decimals
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end
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--[[---------------------------------------------------------
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- func: GetDecimals()
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- desc: gets how many decimals the object's value
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can have
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--]]---------------------------------------------------------
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function newobject:GetDecimals()
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return self.decimals
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end
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--[[---------------------------------------------------------
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- func: SetButtonSize(width, height)
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- desc: sets the objects's button size
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--]]---------------------------------------------------------
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function newobject:SetButtonSize(width, height)
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local internals = self.internals
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local sliderbutton = internals[1]
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if sliderbutton then
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sliderbutton.width = width
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sliderbutton.height = height
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end
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end
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--[[---------------------------------------------------------
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- func: GetButtonSize()
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- desc: gets the objects's button size
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--]]---------------------------------------------------------
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function newobject:GetButtonSize()
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local internals = self.internals
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local sliderbutton = internals[1]
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if sliderbutton then
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return sliderbutton.width, sliderbutton.height
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end
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end
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--[[---------------------------------------------------------
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- func: SetSlideType(slidetype)
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- desc: sets the objects's slide type
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--]]---------------------------------------------------------
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function newobject:SetSlideType(slidetype)
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self.slidetype = slidetype
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if slidetype == "vertical" then
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self:SetValue(self.min)
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end
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end
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--[[---------------------------------------------------------
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- func: GetSlideType()
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- desc: gets the objects's slide type
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--]]---------------------------------------------------------
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function newobject:GetSlideType()
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return self.slidetype
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end
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--[[---------------------------------------------------------
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- func: SetScrollable(bool)
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- desc: sets whether or not the object can be scrolled
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via the mouse wheel
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--]]---------------------------------------------------------
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function newobject:SetScrollable(bool)
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self.scrollable = bool
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end
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--[[---------------------------------------------------------
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- func: GetScrollable()
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- desc: gets whether or not the object can be scrolled
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via the mouse wheel
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--]]---------------------------------------------------------
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function newobject:GetScrollable()
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return self.scrollable
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end
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--[[---------------------------------------------------------
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- func: SetScrollIncrease(increase)
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- desc: sets the amount to increase the object's value
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by when scrolling with the mouse wheel
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--]]---------------------------------------------------------
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function newobject:SetScrollIncrease(increase)
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self.scrollincrease = increase
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end
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--[[---------------------------------------------------------
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- func: GetScrollIncrease()
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- desc: gets the amount to increase the object's value
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by when scrolling with the mouse wheel
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--]]---------------------------------------------------------
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function newobject:GetScrollIncrease()
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return self.scrollincrease
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end
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--[[---------------------------------------------------------
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- func: SetScrollDecrease(decrease)
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- desc: sets the amount to decrease the object's value
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by when scrolling with the mouse wheel
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--]]---------------------------------------------------------
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function newobject:SetScrollDecrease(decrease)
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self.scrolldecrease = decrease
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end
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--[[---------------------------------------------------------
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- func: GetScrollDecrease()
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- desc: gets the amount to decrease the object's value
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by when scrolling with the mouse wheel
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--]]---------------------------------------------------------
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function newobject:GetScrollDecrease()
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return self.scrolldecrease
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end
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--[[---------------------------------------------------------
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- func: SetEnabled(bool)
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- desc: sets whether or not the object is enabled
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--]]---------------------------------------------------------
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function newobject:SetEnabled(bool)
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self.enabled = bool
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end
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--[[---------------------------------------------------------
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- func: GetEnabled()
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- desc: gets whether or not the object is enabled
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--]]---------------------------------------------------------
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function newobject:GetEnabled()
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return self.enabled
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end |