Add zero-padding to numberbox

loveframes/objects/numberbox.lua

@@ -28,6 +28,7 @@ function newobject:initialize()
 	self.internal = false
 	self.canmodify = false
 	self.lastbuttonclicked = false
+  self.zeropad = false
 	self.internals = {}
 	self.OnValueChanged = nil
 	
@@ -60,6 +61,9 @@ function newobject:initialize()
 			end
 		end
 	end
+  input.OnFocusLost = function(object)
+    self:updateinput()
+  end
 	input.Update = function(object)
 		object:SetSize(object.parent.width - 20, object.parent.height)
 	end
@@ -141,6 +145,29 @@ function newobject:initialize()
 	self:SetDrawFunc()
 end
 
+function newobject:updateinput()
+
+  local value = self.value
+  if self.zeropad then
+    local maxabs = math.max(math.abs(self.min), math.abs(self.max))
+    -- A range from 0 to 0 would be unusual, but it would break the math.
+    if maxabs == 0 then maxabs = 1 end
+    local integralwidth = math.ceil(math.log10(maxabs))
+    local width = integralwidth
+    if self.decimals > 0 then
+      width = width + decimals + 1
+    end
+    if value < 0 then
+      width = width + 1
+    end
+    local formatstring = string.format("%%0%d.%df", width, self.decimals)
+    value = string.format(formatstring, value)
+  end
+  local input = self.internals[1]
+  input:SetText(value)
+
+end
+
 --[[---------------------------------------------------------
 	- func: update(deltatime)
 	- desc: updates the element
@@ -231,11 +258,10 @@ function newobject:SetValue(value)
 	local curvalue = self.value
 	local value = tonumber(value) or min
 	local internals = self.internals
-	local input = internals[1]
 	local onvaluechanged = self.OnValueChanged
 	
 	self.value = value
-	input:SetText(value)
+	self:updateinput()
 	
 	if value ~= curvalue and onvaluechanged then
 		onvaluechanged(self, value)
@@ -303,15 +329,13 @@ end
 --]]---------------------------------------------------------
 function newobject:SetMax(max)
 
-	local internals = self.internals
-	local input = internals[1]
 	local onvaluechanged = self.OnValueChanged
 	
 	self.max = max
 	
 	if self.value > max then
 		self.value = max
-		input:SetValue(max)
+		self:updateinput()
 		if onvaluechanged then
 			onvaluechanged(self, max)
 		end
@@ -337,15 +361,13 @@ end
 --]]---------------------------------------------------------
 function newobject:SetMin(min)
 
-	local internals = self.internals
-	local input = internals[1]
 	local onvaluechanged = self.OnValueChanged
 	
 	self.min = min
 	
 	if self.value < min then
 		self.value = min
-		input:SetValue(min)
+    self:updateinput()
 		if onvaluechanged then
 			onvaluechanged(self, min)
 		end
@@ -371,8 +393,6 @@ end
 --]]---------------------------------------------------------
 function newobject:SetMinMax(min, max)
 
-	local internals = self.internals
-	local input = internals[1]
 	local onvaluechanged = self.OnValueChanged
 	
 	self.min = min
@@ -380,7 +400,7 @@ function newobject:SetMinMax(min, max)
 	
 	if self.value > max then
 		self.value = max
-		input:SetValue(max)
+    self:updateinput()
 		if onvaluechanged then
 			onvaluechanged(self, max)
 		end
@@ -388,7 +408,7 @@ function newobject:SetMinMax(min, max)
 	
 	if self.value < min then
 		self.value = min
-		input:SetValue(min)
+    self:updateinput()
 		if onvaluechanged then
 			onvaluechanged(self, min)
 		end
@@ -415,8 +435,6 @@ end
 function newobject:ModifyValue(type)
 
 	local value = self.value
-	local internals = self.internals
-	local input = internals[1]
 	local decimals = self.decimals
 	local onvaluechanged = self.OnValueChanged
 	
@@ -432,7 +450,7 @@ function newobject:ModifyValue(type)
 			self.value = max
 		end
 		self.value = loveframes.Round(self.value, decimals)
-		input:SetText(self.value)
+		self:updateinput()
 		if value ~= self.value then
 			if onvaluechanged then
 				onvaluechanged(self, self.value)
@@ -446,7 +464,7 @@ function newobject:ModifyValue(type)
 			self.value = min
 		end
 		self.value = loveframes.Round(self.value, decimals)
-		input:SetText(self.value)
+		self:updateinput()
 		if value ~= self.value then
 			if onvaluechanged then
 				onvaluechanged(self, self.value)
@@ -481,5 +499,29 @@ function newobject:GetDecimals()
 	
 end
 
+--[[---------------------------------------------------------
+	- func: SetZeroPad(decimals)
+	- desc: sets whether to pad the object's value
+      with zeroes
+--]]---------------------------------------------------------
+function newobject:SetZeroPad(zeropad)
+
+  self.zeropad = zeropad
+  self:updateinput()
+  return self
+
+end
+
+--[[---------------------------------------------------------
+	- func: GetZeroPad()
+	- desc: gets whether to pad the object's value
+      with zeroes
+--]]---------------------------------------------------------
+function newobject:GetZeroPad()
+
+  return self.zeropad
+
+end
+
 ---------- module end ----------
 end

main.lua

@@ -84,6 +84,7 @@ function love.load()
     :SetMinMax(1, 12)
     :SetValue(12)
     :SetParent(timeInputs)
+    :SetZeroPad(true)
   timeInputs:SetHeight(hourBox:GetHeight())
   loveframes.Create("text")
     :SetText(":")
@@ -93,6 +94,7 @@ function love.load()
     :SetValue(0)
     :SetParent(timeInputs)
     :SetX(100)
+    :SetZeroPad(true)
   local controls = loveframes.Create("collapsiblecategory")
     :SetPos(column2X, margin)
     :SetObject(timeInputs)