AndyObtiva/glimmer-dsl-libui

# Copyright (c) 2021-2024 Andy Maleh
#
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# a copy of this software and associated documentation files (the
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# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
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#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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require 'glimmer/libui/shape'

module Glimmer
  module LibUI
    class Shape
      # Represents a figure consisting of shapes (nested under path)
      # Can optionally have `closed true` property (connecting last point to first point automatically)
      class Figure < Shape
        parameters :x, :y
        parameter_defaults nil, nil
        
        def draw(area_draw_params)
          ::LibUI.draw_path_new_figure(path_proxy.libui, *@args) unless @args.compact.empty? # TODO if args empty then wait till there is an arc child and it starts the figure
          children.dup.each {|child| child.draw(area_draw_params)}
          ::LibUI.draw_path_close_figure(path_proxy.libui) if closed?
          super
        end
        
        def closed(value = nil)
          if value.nil?
            @closed
          else
            if !!value != !!@closed
              @closed = value
              request_auto_redraw
            end
          end
        end
        alias closed= closed
        alias set_closed closed
        alias closed? closed
        
        def move_by(x_delta, y_delta)
          self.x += x_delta
          self.y += y_delta
          children.each {|child| child.move_by(x_delta, y_delta)}
        end
                
        def perfect_shape
          require 'perfect-shape'
          the_perfect_shape_dependencies = perfect_shape_dependencies
          if the_perfect_shape_dependencies != @perfect_shape_dependencies
            absolute_x, absolute_y, closed, draw_fill_mode, children = @perfect_shape_dependencies = the_perfect_shape_dependencies
            path_shapes = [[absolute_x, absolute_y]]
            path_shapes += children.map(&:perfect_shape)
            winding_rule = draw_fill_mode == :winding ? :wind_non_zero : :wind_even_odd
            @perfect_shape = PerfectShape::Path.new(
              closed: closed,
              winding_rule: winding_rule,
              shapes: path_shapes,
              line_to_complex_shapes: true
            )
          end
          @perfect_shape
        end
        
        def perfect_shape_dependencies
          [absolute_x, absolute_y, closed, parent.draw_fill_mode, children]
        end
      end
    end
  end
end