AndyObtiva/glimmer-dsl-swt

# Copyright (c) 2007-2024 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,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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require 'glimmer/dsl/expression'
require 'glimmer/dsl/top_level_expression'
require 'glimmer/dsl/parent_expression'
require 'glimmer/swt/image_proxy'
require 'glimmer/swt/widget_proxy'

module Glimmer
  module DSL
    module SWT
      # image expression
      # Note: Cannot be a static expression because it clashes with image property expression
      class ImageExpression < Expression
        include TopLevelExpression
        include ParentExpression
        
        def can_interpret?(parent, keyword, *args, &block)
          options = args.last.is_a?(Hash) ? args.last : {}
          (keyword == 'image') and
            (!args.empty?) and
            (
              options.keys.include?(:top_level) or
              (
                !parent.is_a?(Glimmer::SWT::Custom::Shape) and
                (parent.nil? or parent.respond_to?('image=') or args.first.is_a?(Numeric))
              )
            )
        end
  
        def interpret(parent, keyword, *args, &block)
          options = args.last.is_a?(Hash) ? args.last : {}
          coordinate_args = args.size == (options.empty? ? 2 : 3)
          args.unshift(parent) unless parent.nil? || options[:top_level]
          @create_pixel_by_pixel = coordinate_args && block&.parameters&.count == 2
          if @create_pixel_by_pixel
            Glimmer::SWT::ImageProxy.create_pixel_by_pixel(*args, &block)
          else
            Glimmer::SWT::ImageProxy.create(*args, &block)
          end
        end

        def add_content(parent, keyword, *args, &block)
          return if @create_pixel_by_pixel || block&.parameters&.count == 2
          super
          parent.post_add_content
        end
      end
    end
  end
end