minor improvements

luigi/widget/sash.lua

@@ -32,8 +32,12 @@ local function setDimension (widget, name, size)
     local parentDimension = widget.parent:calculateDimension(name)
     local claimed = 0
     for i, sibling in ipairs(widget.parent) do
-        if sibling ~= widget and sibling[name] then
-            claimed = claimed + sibling[name]
+        local value = sibling[name]
+        if sibling ~= widget and value then
+            if value == 'auto' then
+                value = sibling:calculateDimensionMinimum(name)
+            end
+            claimed = claimed + value
         end
     end
     if claimed + size > parentDimension then
@@ -71,11 +75,13 @@ return function (self)
         local prevSize = prevSibling and prevSibling[dimension]
         local nextSize = nextSibling and nextSibling[dimension]
 
-        if prevSize then
+        if prevSize or not nextSize then
             setDimension(prevSibling, dimension,
                 event[axis] - prevSibling:calculatePosition(axis))
-        end
-        if nextSize then
+        elseif nextSize then
+            if nextSize == 'auto' then
+                nextSize = nextSibling:calculateDimensionMinimum(dimension)
+            end
             setDimension(nextSibling, dimension,
                 nextSibling:calculatePosition(axis) + nextSize - event[axis])
         end

luigi/widget/slider.lua

@@ -12,15 +12,13 @@ return function (self)
         return value < 0 and 0 or value > 1 and 1 or value
     end
 
-    self.value = clamp(self.value or 0.5)
+    self.value = clamp(self.value or 0)
     self.step = self.step or 0.01
 
     local spacer = self:addChild()
 
     local thumb = self:addChild {
-        type = 'button',
-        align = 'middle center',
-        margin = 0,
+        type = 'slider.thumb',
     }
 
     local function unpress ()

luigi/widget/stepper.lua

@@ -21,9 +21,9 @@ return function (self)
         self[index] = nil
     end
 
-    local before = self:addChild { type = 'stepper.left' }
-    local view = self:addChild()
-    local after = self:addChild { type = 'stepper.right' }
+    local before = self:addChild { type = 'stepper.before' }
+    local view = self:addChild { type = 'stepper.view' }
+    local after = self:addChild { type = 'stepper.after' }
 
     self:onReshape(function (event)
         if self.flow == 'x' then

luigi/widget/text.lua

@@ -182,7 +182,7 @@ return function (self)
         self.fontData = Backend.Font(self.font, self.size)
     end
 
-    self.value = self.value or self.text or ''
+    self.value = tostring(self.value or self.text or '')
 
     self.text = ''