fix sizing bug

modules/Element.lua

@@ -629,11 +629,20 @@ function Element.new(props)
     self.width = tempWidth
   else
     self.autosizing.width = true
+    -- Special case: if textWrap is enabled and parent exists, constrain width to parent
+    -- Text wrapping requires a width constraint, so use parent's content width
+    if props.textWrap and self.parent and self.parent.width then
+      tempWidth = self.parent.width
+      self.width = tempWidth
+      self.units.width = { value = 100, unit = "%" } -- Mark as parent-constrained
+      self.autosizing.width = false -- Not truly autosizing, constrained by parent
+    else
       -- Calculate auto-width without padding first
       tempWidth = self:calculateAutoWidth()
       self.width = tempWidth
       self.units.width = { value = nil, unit = "auto" } -- Mark as auto-sized
     end
+  end
 
   -- Handle height (both h and height properties, prefer h if both exist)
   local heightProp = props.height
@@ -1970,17 +1979,43 @@ function Element:addChild(child)
   -- Only recalculate auto-sizing if the child participates in layout
   -- (CSS: absolutely positioned children don't affect parent auto-sizing)
   if not child._explicitlyAbsolute then
+    local sizeChanged = false
+
     if self.autosizing.height then
+      local oldHeight = self.height
       local contentHeight = self:calculateAutoHeight()
       -- BORDER-BOX MODEL: Add padding to get border-box, then subtract to get content
       self._borderBoxHeight = contentHeight + self.padding.top + self.padding.bottom
       self.height = contentHeight
+      if oldHeight ~= self.height then
+        sizeChanged = true
+      end
     end
     if self.autosizing.width then
+      local oldWidth = self.width
       local contentWidth = self:calculateAutoWidth()
       -- BORDER-BOX MODEL: Add padding to get border-box, then subtract to get content
       self._borderBoxWidth = contentWidth + self.padding.left + self.padding.right
       self.width = contentWidth
+      if oldWidth ~= self.width then
+        sizeChanged = true
+      end
+    end
+
+    -- Propagate size change up the tree
+    if sizeChanged and self.parent and (self.parent.autosizing.width or self.parent.autosizing.height) then
+      -- Trigger parent to recalculate its size by re-adding this child's contribution
+      -- This ensures grandparents are notified of size changes
+      if self.parent.autosizing.height then
+        local contentHeight = self.parent:calculateAutoHeight()
+        self.parent._borderBoxHeight = contentHeight + self.parent.padding.top + self.parent.padding.bottom
+        self.parent.height = contentHeight
+      end
+      if self.parent.autosizing.width then
+        local contentWidth = self.parent:calculateAutoWidth()
+        self.parent._borderBoxWidth = contentWidth + self.parent.padding.left + self.parent.padding.right
+        self.parent.width = contentWidth
+      end
     end
   end
 
@@ -3854,6 +3889,13 @@ function Element:calculateTextHeight()
   if self.textWrap and (self.textWrap == "word" or self.textWrap == "char" or self.textWrap == true) then
     -- Calculate available width for wrapping
     local availableWidth = self.width
+
+    -- If width is not set or is 0, try to use parent's content width
+    if (not availableWidth or availableWidth <= 0) and self.parent then
+      -- Use parent's content width (excluding padding)
+      availableWidth = self.parent.width
+    end
+
     if availableWidth and availableWidth > 0 then
       -- Get the wrapped text lines using getWrap (returns width and table of lines)
       local wrappedWidth, wrappedLines = font:getWrap(self.text, availableWidth)
@@ -4674,7 +4716,7 @@ function Element:_wrapLine(line, maxWidth)
           type = "space",
           text = line:sub(utf8.offset(line, wsStart), utf8.offset(line, pos) and utf8.offset(line, pos) - 1 or #line),
           startPos = wsStart - 1,
-          length = pos - wsStart
+          length = pos - wsStart,
         })
       else
         -- Collect word (non-whitespace sequence)
@@ -4686,7 +4728,7 @@ function Element:_wrapLine(line, maxWidth)
           type = "word",
           text = line:sub(utf8.offset(line, wordStart), utf8.offset(line, pos) and utf8.offset(line, pos) - 1 or #line),
           startPos = wordStart - 1,
-          length = pos - wordStart
+          length = pos - wordStart,
         })
       end
     end