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# Normally when we provide the top left corner of a bounding box we
# express the coordinates relative to the margin box. This is not the
# case when we have nested bounding boxes. Once nested the inner bounding box
# coordinates are relative to the outter bounding box.
#
# This example shows some nested bounding boxes with fixed and stretchy heights.
# Note how the <code>cursor</code> method returns coordinates relative to
# the current bounding box.
require_relative '../example_helper'
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
def box_content(string)
text string
transparent(0.5) { stroke_bounds }
end
gap = 20
bounding_box([50, cursor], width: 400, height: 200) do
box_content('Fixed height')
bounding_box([gap, cursor - gap], width: 300) do
text 'Stretchy height'
bounding_box([gap, bounds.top - gap], width: 100) do
text 'Stretchy height'
transparent(0.5) do
dash(1)
stroke_bounds
undash
end
end
bounding_box([gap * 7, bounds.top - gap], width: 100, height: 50) do
box_content('Fixed height')
end
transparent(0.5) do
dash(1)
stroke_bounds
undash
end
end
bounding_box([gap, cursor - gap], width: 300, height: 50) do
box_content('Fixed height')
end
end
end
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