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# encoding: utf-8
#
# example_helper.rb: Helper used to generate icon font legends.
#
# Copyright October 2014, Jesse Doyle. All rights reserved.
#
# This is free software. Please see the LICENSE and COPYING files for details.
# All example code may be executed by calling `rake legend`
ICONS_PER_PAGE = 72
def icon_keys(pdf, specifier)
keys = Prawn::Icon::FontData.load(pdf, specifier).keys
keys.each_slice(6).to_a
end
def page_header(text, link)
grid([0, 0], [1, 5]).bounding_box do
move_down 10
text 'Prawn/Icon', size: 50
if block_given?
yield
else
text "#{text}: <color rgb='1B83BE'>" +
"<link href='#{link}'>#{link}</link></color>",
inline_format: true,
size: 12
end
end
end
def number_of_pages(pdf, specifier)
keys = Prawn::Icon::FontData.load(pdf, specifier).keys
num_icons = keys.size
# First page can only fit 60 icons
num_icons -= 60
# (First page) + (remaining pages)
1 + (num_icons/ICONS_PER_PAGE).ceil
end
def legend_text(key)
h = cursor - bounds.bottom
opts = {
width: bounds.width,
height: h
}
bounding_box [bounds.left, cursor], opts do
text key,
overflow: :shrink_to_fit,
align: :center,
valign: :bottom,
width: bounds.width,
height: bounds.height,
size: 12
end
end
def first_page_icons(icons)
icons[0..9].each_with_index do |group, i|
group.each_with_index do |icon, j|
grid(i+2, j).bounding_box do
if block_given?
yield icon
else
icon icon, size: 20, align: :center
end
move_down 4
legend_text icon
end
end
end
def page_icons(icons, required_pages)
icon_start = 10 # Skip first page icons
required_pages.times do |page|
icons[icon_start..icon_start+11].each_with_index do |group, i|
group.each_with_index do |icon, j|
grid(i, j).bounding_box do
if block_given?
yield icon
else
icon icon, size: 20, align: :center
end
move_down 4
legend_text icon
end
end
icon_start += 1 # New icon row
end
start_new_page unless page == required_pages - 1
end
end
end
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