Probably fix layout issues caused by floating point errors where an element is wrapped when it has space (e.g. 2 elements with a width 0.5 not fitting properly)

cyberarm_engine.gemspec

@@ -27,8 +27,8 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = %w[lib assets]
 
-  spec.add_dependency "clipboard", "~> 1.3.5"
+  spec.add_dependency "clipboard", "~> 1.3"
-  spec.add_dependency "excon", "~> 0.78.0"
+  spec.add_dependency "excon", "~> 0.88"
   spec.add_dependency "gosu", "~> 1.1"
   spec.add_dependency "gosu_more_drawables", "~> 0.3"
   # spec.add_dependency "ffi", :platforms => [:mswin, :mingw] # Required by Clipboard on Windows

lib/cyberarm_engine.rb

@@ -24,6 +24,7 @@ require_relative "cyberarm_engine/transform"
 require_relative "cyberarm_engine/ray"
 require_relative "cyberarm_engine/background"
 require_relative "cyberarm_engine/background_nine_slice"
+require_relative "cyberarm_engine/background_image"
 require_relative "cyberarm_engine/animator"
 
 require_relative "cyberarm_engine/text"

lib/cyberarm_engine/background_image.rb

@@ -0,0 +1,93 @@
+module CyberarmEngine
+  class BackgroundImage
+    include CyberarmEngine::Common
+    attr_accessor :x, :y, :z, :mode
+    attr_reader :image, :width, :height, :color
+
+    def initialize(image_path: nil, x: 0, y: 0, z: 0, width: 0, height: 0, mode: :fill, color: Gosu::Color::WHITE)
+      @image_path = image_path
+      @image = get_image(image_path) if image_path
+
+      @x = x
+      @y = y
+      @z = z
+      @width = width
+      @height = height
+
+      @mode = mode
+
+      @color = color
+
+      @cached_tiling = nil
+    end
+
+    def image=(image_path)
+      @cached_tiling = nil if image_path != @image_path
+      @image_path = image_path
+      @image = image_path ? get_image(image_path) : image_path
+    end
+
+    def width=(n)
+      @cached_tiling = nil if @width != n
+      @width = n
+    end
+
+    def height=(n)
+      @cached_tiling = nil if @height != n
+      @height = n
+    end
+
+    def color=(c)
+      @cached_tiling = nil if @color != c
+      @color = c
+    end
+
+    def width_scale
+      (@width.to_f / @image.width).abs
+    end
+
+    def height_scale
+      (@height.to_f / @image.height).abs
+    end
+
+    def draw
+      return unless @image
+
+      Gosu.clip_to(@x, @y, @width, @height) do
+        send(:"draw_#{mode}")
+      end
+    end
+
+    def draw_stretch
+      @image.draw(@x, @y, @z, width_scale, height_scale, @color)
+    end
+
+    def draw_tiled
+      @cached_tiling ||= Gosu.record(@width, @height) do
+        height_scale.ceil.times do |y|
+          width_scale.ceil.times do |x|
+            @image.draw(x * @image.width, y * @image.height, @z, 1, 1, @color)
+          end
+        end
+      end
+
+      @cached_tiling.draw(@x, @y, @z)
+    end
+
+    def draw_fill
+      if @width * width_scale > height * height_scale
+        draw_fill_width
+      else
+        draw_fill_height
+      end
+    end
+
+    def draw_fill_width
+      @image.draw(@x, @y, @z, width_scale, width_scale, @color)
+    end
+
+    def draw_fill_height
+      @image.draw(@x, @y, @z, height_scale, height_scale, @color)
+    end
+  end
+end

lib/cyberarm_engine/ui/element.rb

@@ -4,7 +4,7 @@ module CyberarmEngine
     include Event
     include Common
 
-    attr_accessor :x, :y, :z, :enabled, :tip
+    attr_accessor :x, :y, :z, :tip, :element_visible
     attr_reader :parent, :options, :style, :event_handler, :background_canvas, :border_canvas
 
     def initialize(options = {}, block = nil)
@@ -13,9 +13,9 @@ module CyberarmEngine
       @options = options
       @block = block
 
-      @focus   = @options[:focus].nil?   ? false : @options[:focus]
+      @focus   = !@options.key?(:focus)   ? false : @options[:focus]
-      @enabled = @options[:enabled].nil? ? true  : @options[:enabled]
+      @enabled = !@options.key?(:enabled) ? true  : @options[:enabled]
-      @visible = @options[:visible].nil? ? true  : @options[:visible]
+      @visible = !@options.key?(:visible) ? true  : @options[:visible]
       @tip     = @options[:tip] || ""
 
       @debug_color = @options[:debug_color].nil? ? Gosu::Color::RED : @options[:debug_color]
@@ -24,6 +24,7 @@ module CyberarmEngine
 
       @root ||= nil
       @gui_state ||= nil
+      @element_visible = true
 
       @x = @style.x
       @y = @style.y
@@ -37,6 +38,7 @@ module CyberarmEngine
 
       @style.background_canvas = Background.new
       @style.background_nine_slice_canvas = BackgroundNineSlice.new
+      @style.background_image_canvas = BackgroundImage.new
       @style.border_canvas = BorderCanvas.new(element: self)
 
       @style_event = :default
@@ -51,11 +53,15 @@ module CyberarmEngine
     def stylize
       set_static_position
 
+      set_color
+      set_font
+
       set_padding
       set_margin
 
       set_background
       set_background_nine_slice
+      set_background_image
 
       set_border_thickness
       set_border_color
@@ -70,6 +76,15 @@ module CyberarmEngine
       @y = @style.y if @style.y != 0
     end
 
+    def set_color
+      @style.color = safe_style_fetch(:color)
+      @text&.color = @style.color
+    end
+
+    def set_font
+      @text&.swap_font(safe_style_fetch(:text_size), safe_style_fetch(:font))
+    end
+
     def set_background
       @style.background = safe_style_fetch(:background)
 
@@ -91,6 +106,14 @@ module CyberarmEngine
       @style.background_nine_slice_bottom    = safe_style_fetch(:background_nine_slice_bottom) || @style.background_nine_slice_from_edge
     end
 
+    def set_background_image
+      @style.background_image = safe_style_fetch(:background_image)
+      @style.background_image_mode = safe_style_fetch(:background_image_mode) || :stretch
+      @style.background_image_color = safe_style_fetch(:background_image_color) || Gosu::Color::WHITE
+      @style.background_image_canvas.mode = @style.background_image_mode
+      @style.background_image_canvas.color = @style.background_image_color
+    end
+
     def set_border_thickness
       @style.border_thickness = safe_style_fetch(:border_thickness)
 
@@ -138,14 +161,8 @@ module CyberarmEngine
       old_width = width
       old_height = height
 
-      _style = @style.send(event)
       @style_event = event
 
-      if @text.is_a?(CyberarmEngine::Text)
-        @text.color = _style&.dig(:color) || @style.default[:color]
-        @text.swap_font(_style&.dig(:text_size) || @style.default[:text_size], _style&.dig(:font) || @style.default[:font])
-      end
-
       return if self.is_a?(ToolTip)
 
       if old_width != width || old_height != height
@@ -238,6 +255,14 @@ module CyberarmEngine
       :handled
     end
 
+    def enabled=(boolean)
+      @enabled = boolean
+
+      recalculate
+
+      @enabled
+    end
+
     def enabled?
       @enabled
     end
@@ -246,6 +271,10 @@ module CyberarmEngine
       @visible
     end
 
+    def element_visible?
+      @element_visible
+    end
+
     def toggle
       @visible = !@visible
       root.gui_state.request_recalculate
@@ -265,15 +294,15 @@ module CyberarmEngine
 
     def draw
       return unless visible?
+      return unless element_visible?
 
       @style.background_canvas.draw
       @style.background_nine_slice_canvas.draw
+      @style.background_image_canvas.draw
       @style.border_canvas.draw
 
-      Gosu.clip_to(@x, @y, width, height) do
       render
     end
-    end
 
     def debug_draw
       return if defined?(GUI_DEBUG_ONLY_ELEMENT) && self.class == GUI_DEBUG_ONLY_ELEMENT
@@ -370,29 +399,75 @@ module CyberarmEngine
     end
 
     def scroll_width
-      @children.sum(&:width) + noncontent_width
+      @children.sum(&:outer_width)
     end
 
     def scroll_height
-      @children.sum(&:height) + noncontent_height
+      if is_a?(CyberarmEngine::Element::Flow)
+        return 0 if @children.size.zero?
+
+        pairs_ = []
+        sorted_children_ = @children.sort_by(&:y)
+        a_ = []
+        y_position_ = sorted_children_.first.y
+
+        sorted_children_.each do |child|
+          unless child.y == y_position_
+            y_position_ = child.y
+            pairs_ << a_
+            a_ = []
+          end
+
+          a_ << child
+        end
+
+        pairs_ << a_ unless pairs_.last == a_
+
+        pairs_.sum { |pair| pair.map(&:outer_height).max } + @style.padding_bottom + @style.border_thickness_bottom
+      else
+        @children.sum(&:outer_height) + @style.padding_bottom + @style.border_thickness_bottom
+      end
     end
 
     def max_scroll_width
-      scroll_width - width
+      scroll_width - outer_width
     end
 
     def max_scroll_height
-      scroll_height - height
+      scroll_height - outer_height
     end
 
     def dimensional_size(size, dimension)
       raise "dimension must be either :width or :height" unless %i[width height].include?(dimension)
 
-      if size.is_a?(Numeric) && size.between?(0.0, 1.0)
+      new_size = if size.is_a?(Numeric) && size.between?(0.0, 1.0)
-        (@parent.send(:"content_#{dimension}") * size).round - send(:"noncontent_#{dimension}").round
+        (@parent.send(:"content_#{dimension}") * size).floor - send(:"noncontent_#{dimension}").floor
       else
         size
       end
+
+      if @parent && @style.fill # Handle fill behavior
+        fill_siblings = @parent.children.select { |c| c.style.fill }.count.to_f # include self since we're dividing
+
+        if dimension == :width && @parent.is_a?(Flow)
+          space_available_width = ((@parent.content_width - (@parent.children.reject { |c| c.style.fill }).map(&:outer_width).sum) / fill_siblings)
+          space_available_width = space_available_width.nan? ? 0 : space_available_width.floor # The parent element might not have its dimensions, yet.
+
+          return space_available_width - noncontent_width
+
+        elsif dimension == :height && @parent.is_a?(Stack)
+          space_available_height = ((@parent.content_height - (@parent.children.reject { |c| c.style.fill }).map(&:outer_height).sum) / fill_siblings)
+          space_available_height = space_available_height.nan? ? 0 : space_available_height.floor # The parent element might not have its dimensions, yet.
+
+          return space_available_height - noncontent_height
+        end
+
+      else # Handle min_width/height and max_width/height
+        return @style.send(:"min_#{dimension}") if @style.send(:"min_#{dimension}") && new_size < @style.send(:"min_#{dimension}")
+        return @style.send(:"max_#{dimension}") if @style.send(:"max_#{dimension}") && new_size > @style.send(:"max_#{dimension}")
+      end
+
+      new_size
     end
 
     def background=(_background)
@@ -409,6 +484,7 @@ module CyberarmEngine
 
       @style.background_canvas.update
       update_background_nine_slice
+      update_background_image
       @style.border_canvas.update
     end
 
@@ -436,6 +512,24 @@ module CyberarmEngine
       @style.background_nine_slice_canvas.image = @style.background_nine_slice
     end
 
+    def background_image=(image_path)
+      @style.background_image = image_path.is_a?(Gosu::Image) ? image_path : get_image(image_path)
+      update_background_image
+    end
+
+    def update_background_image
+      @style.background_image_canvas.x = @x
+      @style.background_image_canvas.y = @y
+      @style.background_image_canvas.z = @z
+      @style.background_image_canvas.width = width
+      @style.background_image_canvas.height = height
+
+      @style.background_image_canvas.mode = @style.background_image_mode
+      @style.background_image_canvas.color = @style.background_image_color
+
+      @style.background_image_canvas.image = @style.background_image
+    end
+
     def root
       return self if is_root?
 

lib/cyberarm_engine/ui/elements/button.rb

@@ -64,8 +64,8 @@ module CyberarmEngine
             @scale_y = 1
           end
 
-          @width = _width || @image.width.round * @scale_x
+          @width = _width || @image.width.floor * @scale_x
-          @height = _height || @image.height.round * @scale_y
+          @height = _height || @image.height.floor * @scale_y
 
           update_background
         else
@@ -86,9 +86,12 @@ module CyberarmEngine
 
         old_width = width
         old_height = height
-        recalculate
 
-        root.gui_state.request_recalculate if old_width != width || old_height != height
+        if old_width != width || old_height != height
+          root.gui_state.request_recalculate
+        else
+          recalculate
+        end
 
         publish(:changed, self.value)
       end

lib/cyberarm_engine/ui/elements/container.rb

@@ -45,7 +45,7 @@ module CyberarmEngine
         root.gui_state.request_recalculate
       end
 
-      def apend(&block)
+      def append(&block)
         old_container = $__current_container__
 
         $__current_container__ = self
@@ -57,7 +57,12 @@ module CyberarmEngine
       end
 
       def render
-        Gosu.clip_to(@x, @y, width, height) do
+        Gosu.clip_to(
+          @x + @style.border_thickness_left + @style.padding_left,
+          @y + @style.border_thickness_top + @style.padding_top,
+          content_width + 1,
+          content_height + 1
+        ) do
           @children.each(&:draw)
         end
       end
@@ -103,6 +108,8 @@ module CyberarmEngine
 
         stylize
 
+        # s = Gosu.milliseconds
+
         layout
 
         if is_root?
@@ -115,8 +122,8 @@ module CyberarmEngine
           _width = dimensional_size(@style.width, :width)
           _height = dimensional_size(@style.height, :height)
 
-          @width  = _width  || (@children.map { |c| c.x + c.outer_width }.max || 0).round
+          @width  = _width  || (@children.map { |c| c.x + c.outer_width }.max || 0).floor
-          @height = _height || (@children.map { |c| c.y + c.outer_height }.max || 0).round
+          @height = _height || (@children.map { |c| c.y + c.outer_height }.max || 0).floor
         end
 
         # Move child to parent after positioning
@@ -129,8 +136,13 @@ module CyberarmEngine
           child.reposition # TODO: Implement top,bottom,left,center, and right positioning
 
           Stats.increment(:gui_recalculations_last_frame, 1)
+
+          child.element_visible = child.x >= @x - child.width && child.x <= @x + width &&
+                                  child.y >= @y - child.height && child.y <= @y + height
         end
 
+        # puts "TOOK: #{Gosu.milliseconds - s}ms to recalculate #{self.class}:0x#{self.object_id.to_s(16)}"
+
         update_background
       end
 
@@ -139,12 +151,14 @@ module CyberarmEngine
       end
 
       def max_width
-        _width = dimensional_size(@style.width, :width)
+        # _width = dimensional_size(@style.width, :width)
-        if _width
+        # if _width
+        #   outer_width
+        # else
+        #   window.width - (@parent ? @parent.style.margin_right + @style.margin_right : @style.margin_right)
+        # end
+
         outer_width
-        else
-          window.width - (@parent ? @parent.style.margin_right + @style.margin_right : @style.margin_right)
-        end
       end
 
       def fits_on_line?(element) # Flow
@@ -194,7 +208,8 @@ module CyberarmEngine
         if @scroll_position.y < 0
           @scroll_position.y += @scroll_speed
           @scroll_position.y = 0 if @scroll_position.y > 0
-          recalculate
+
+          root.gui_state.request_recalculate_for(self)
 
           return :handled
         end
@@ -208,7 +223,8 @@ module CyberarmEngine
         if @scroll_position.y.abs < max_scroll_height
           @scroll_position.y -= @scroll_speed
           @scroll_position.y = -max_scroll_height if @scroll_position.y.abs > max_scroll_height
-          recalculate
+
+          root.gui_state.request_recalculate_for(self)
 
           return :handled
         end

lib/cyberarm_engine/ui/elements/edit_box.rb

@@ -98,7 +98,7 @@ module CyberarmEngine
       end
 
       def row_at(y)
-        ((y - @text.y) / @text.textobject.height).round
+        ((y - @text.y) / @text.textobject.height).floor
       end
 
       def column_at(x, y)

lib/cyberarm_engine/ui/elements/image.rb

@@ -45,8 +45,8 @@ module CyberarmEngine
           @scale_y = 1
         end
 
-        @width = _width || @image.width.round * @scale_x
+        @width = _width || @image.width.floor * @scale_x
-        @height = _height || @image.height.round * @scale_y
+        @height = _height || @image.height.floor * @scale_y
 
         update_background
       end

lib/cyberarm_engine/ui/elements/list_box.rb

@@ -17,6 +17,8 @@ module CyberarmEngine
         @menu.define_singleton_method(:recalculate_menu) do
           @x = @__list_box.x
           @y = @__list_box.y + @__list_box.height
+
+          @y = @__list_box.y - height if @y + height > window.height
         end
         @menu.instance_variable_set(:"@__list_box", self)
 
@@ -46,10 +48,18 @@ module CyberarmEngine
         :handled
       end
 
+      def clicked_left_mouse_button(_sender, _x, _y)
+        # @block&.call(self.value) if @enabled
+
+        :handled
+      end
+
       def show_menu
         @menu.clear
 
         @items.each do |item|
+          next if item == self.value
+
           btn = Button.new(
             item,
             {
@@ -61,7 +71,7 @@ module CyberarmEngine
             },
             proc do
               self.choose = item
-              @block&.call(item)
+              @block&.call(self.value)
             end
           )
 

lib/cyberarm_engine/ui/elements/progress.rb

@@ -1,9 +1,16 @@
 module CyberarmEngine
   class Element
     class Progress < Element
+      attr_reader :type
+
       def initialize(options = {}, block = nil)
         super(options, block)
 
+        @animation_speed = options[:animation_speed] || 3_000
+        @marquee_width = options[:marquee_width] || 0.25
+        @marquee_offset = 0
+        @marquee_animation_time = Gosu.milliseconds
+        @type = options[:type] || :linear
         @fraction_background = Background.new(background: @style.fraction_background)
         self.value = options[:fraction] || 0.0
       end
@@ -24,15 +31,45 @@ module CyberarmEngine
       def update_background
         super
 
-        @fraction_background.x = @style.border_thickness_left + @style.padding_left + @x
+        @fraction_background.x = (@style.border_thickness_left + @style.padding_left + @x) + @marquee_offset
         @fraction_background.y = @style.border_thickness_top + @style.padding_top + @y
         @fraction_background.z = @z
-        @fraction_background.width = @width * @fraction
+        @fraction_background.width = @width * (@type == :marquee ? @marquee_width : @fraction)
         @fraction_background.height = @height
 
         @fraction_background.background = @style.fraction_background
       end
 
+      def update
+        super
+
+        return unless @type == :marquee
+
+        marquee_width = @width * @marquee_width
+        range = @width + marquee_width
+
+        @marquee_offset = (@width * (Gosu.milliseconds - @marquee_animation_time) / @animation_speed) - marquee_width
+        @marquee_animation_time = Gosu.milliseconds if @marquee_offset > range
+
+        update_background
+      end
+
+      def type=(type)
+        @type = type
+
+        case type
+        when :linear
+          @marquee_offset = 0
+        when :marquee
+          @marquee_offset = 0
+          @marquee_animation_time = Gosu.milliseconds
+        else
+          raise ArgumentError, "Only types :linear and :marquee are supported"
+        end
+
+        update_background
+      end
+
       def value
         @fraction
       end

lib/cyberarm_engine/ui/elements/text_block.rb

@@ -18,8 +18,15 @@ module CyberarmEngine
       end
 
       def render
+        # Gosu.clip_to is too expensive to always use so check if we actually need it.
+        if @text.width > width || @text.height > height
+          Gosu.clip_to(@x, @y, width, height) do
             @text.draw
           end
+        else
+          @text.draw
+        end
+      end
 
       def recalculate
         unless @enabled
@@ -36,8 +43,8 @@ module CyberarmEngine
 
         handle_text_wrapping(_width)
 
-        @width  = _width  || @text.width.round
+        @width  = _width  || @text.width.floor
-        @height = _height || @text.height.round
+        @height = _height || @text.height.floor
 
         @text.y = @style.border_thickness_top + @style.padding_top + @y
         @text.z = @z + 3
@@ -47,8 +54,8 @@ module CyberarmEngine
           when :left
             @text.x = @style.border_thickness_left + @style.padding_left + @x
           when :center
-            @text.x = if @text.width <= outer_width
+            @text.x = if @text.width <= width
-                        @x + outer_width / 2 - @text.width / 2
+                        @x + width / 2 - @text.width / 2
                       else # Act as left aligned
                         @style.border_thickness_left + @style.padding_left + @x
                       end
@@ -61,46 +68,64 @@ module CyberarmEngine
       end
 
       def handle_text_wrapping(max_width)
-        max_width ||= @parent&.width
+        max_width ||= @parent&.content_width
         max_width ||= @x - (window.width + noncontent_width)
         wrap_behavior = style.text_wrap
         copy = @raw_text.to_s.dup
 
-        if line_width(copy[0]) <= max_width && line_width(copy) > max_width && wrap_behavior != :none
+        # Only perform text wrapping: if it is enabled, is possible to wrap, and text is too long to fit on one line
-          breaks = []
+        if wrap_behavior != :none && line_width(copy[0]) <= max_width && line_width(copy) > max_width
+          breaks = [] # list of indexes to insert a line break
           line_start = 0
           line_end = copy.length
 
-          while line_start != copy.length
+          stalled = false
-            if line_width(copy[line_start...line_end]) > max_width
+          stalled_interations = 0
-              line_end = ((line_end - line_start) / 2.0)
+          max_stalled_iterations = 10
-              line_end = 1.0 if line_end <= 1
+          checked_copy_length = line_width(copy[line_start..line_end])
-            elsif line_end < copy.length && line_width(copy[line_start...line_end + 1]) < max_width
-              # To small, grow!
-              # TODO: find a more efficient way
-              line_end += 1
 
-            else # FOUND IT!
+          # find length of lines
-              entering_line_end = line_end.floor
+          while line_width(copy[line_start..line_end]) > max_width && stalled_interations < max_stalled_iterations
-              max_reach = line_end.floor - line_start < 63 ? line_end.floor - line_start : 63
+            search_start = line_start
-              reach = 0
+            search_end = line_end
+
+            # Perform a binary search to find length of line
+            while search_start < search_end
+              midpoint = ((search_start.to_f + search_end) / 2.0).floor
+
+              if line_width(copy[line_start..midpoint]) > max_width
+                search_end = midpoint
+              else
+                search_start = midpoint + 1
+              end
+            end
 
             if wrap_behavior == :word_wrap
-                max_reach.times do |i|
+              word_search_end = search_end
-                  reach = i
+              failed = false
-                  break if copy[line_end.floor - i].to_s.match(/[[:punct:]]| /)
+
+              until(copy[word_search_end].to_s.match(/[[:punct:]]| /))
+                word_search_end -= 1
+
+                if word_search_end <= 1 || word_search_end < line_start
+                  failed = true
+                  break
+                end
               end
 
-                # puts "Max width: #{max_width}/#{line_width(@raw_text)} Reach: {#{reach}/#{max_reach}} Line Start: #{line_start}/#{line_end.floor} (#{copy.length}|#{@raw_text.length}) [#{entering_line_end}] '#{copy}' {#{copy[line_start...line_end]}}"
+              line_start = failed ? search_end : word_search_end + 1 # walk in front of punctuation
-                line_end = line_end.floor - reach + 1 if reach != max_reach # Add +1 to walk in front of punctuation
+            else
+              line_start = search_end
             end
 
-              breaks << line_end.floor
+            breaks << line_start
-              line_start = line_end.floor
-              line_end = copy.length
 
-              break if entering_line_end == copy.length || reach == max_reach
+            # Prevent locking up due to outer while loop text width < max_width check not being satisfied.
-            end
+            stalled = checked_copy_length == line_width(copy[line_start..line_end])
+            checked_copy_length = line_width(copy[line_start..line_end])
+
+            stalled_interations += 1 if stalled
+            stalled_interations = 0 unless stalled
           end
 
           breaks.each_with_index do |pos, index|
@@ -124,9 +149,12 @@ module CyberarmEngine
 
         old_width = width
         old_height = height
-        recalculate
 
-        root.gui_state.request_recalculate if old_width != width || old_height != height
+        if old_width != width || old_height != height
+          root.gui_state.request_recalculate
+        else
+          recalculate
+        end
 
         publish(:changed, self.value)
       end

lib/cyberarm_engine/ui/gui_state.rb

@@ -25,6 +25,7 @@ module CyberarmEngine
       @last_mouse_pos = nil
       @dragging_element = nil
       @pending_recalculate_request = false
+      @pending_element_recalculate_requests = []
 
       @menu = nil
       @min_drag_distance = 0
@@ -56,6 +57,7 @@ module CyberarmEngine
 
       if @tip.value.length.positive?
         Gosu.flush
+
         @tip.draw
       end
 
@@ -75,6 +77,9 @@ module CyberarmEngine
         @pending_recalculate_request = false
       end
 
+      @pending_element_recalculate_requests.each(&:recalculate)
+      @pending_element_recalculate_requests.clear
+
       if @pending_focus_request
         @pending_focus_request = false
 
@@ -231,6 +236,13 @@ module CyberarmEngine
       @pending_recalculate_request = true
     end
 
+    def request_recalculate_for(element)
+      # element is already queued
+      return if @pending_element_recalculate_requests.detect { |e| e == element }
+
+      @pending_element_recalculate_requests << element
+    end
+
     def request_focus(element)
       @pending_focus_request = true
       @pending_focus_element = element

lib/cyberarm_engine/version.rb

@@ -1,4 +1,4 @@
 module CyberarmEngine
   NAME    = "InDev".freeze
-  VERSION = "0.19.0".freeze
+  VERSION = "0.20.0".freeze
 end