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Contents
# frozen_string_literal: true
module DrawioDsl
# The layout engine is responsible for laying out the elements on the page.
#
# The layout engine can automatically place elements on the page.
#
# It will keep track of layout boundaries, current position and flow direction.
# Elements will be placed on the page in the order they are added.
# Row/column flow objects will hold information about horizontal and vertical element padding
class LayoutEngine
attr_reader :page
attr_reader :current_page
attr_reader :current_layout
def initialize(page)
@page = page
end
def call
page.position_x = page.margin_left
page.position_y = page.margin_top
page.nodes.all.each do |node|
traverse_node(node)
end
end
private
def traverse_node(node)
process_node(node)
node.nodes.all.each do |child|
traverse_node(child)
end
end
def process_node(node)
case node.classification
when :layout_rule
@current_layout = node
when :shape
current_layout&.position_shape(node) if %i[element text].include?(node.class.shape_category)
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems