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module UnicodePlot
module BorderMaps
BORDER_SOLID = {
tl: "┌",
tr: "┐",
bl: "└",
br: "┘",
t: "─",
l: "│",
b: "─",
r: "│"
}.freeze
BORDER_CORNERS = {
tl: "┌",
tr: "┐",
bl: "└",
br: "┘",
t: " ",
l: " ",
b: " ",
r: " ",
}.freeze
BORDER_BARPLOT = {
tl: "┌",
tr: "┐",
bl: "└",
br: "┘",
t: " ",
l: "┤",
b: " ",
r: " ",
}.freeze
end
BORDER_MAP = {
solid: BorderMaps::BORDER_SOLID,
corners: BorderMaps::BORDER_CORNERS,
barplot: BorderMaps::BORDER_BARPLOT,
}.freeze
def self.border_types
BORDER_MAP.keys
end
module BorderPrinter
include StyledPrinter
def print_border_top(out, padding, length, border=:solid, color: :light_black)
return if border == :none
b = BORDER_MAP[border]
print_styled(out, padding, b[:tl], b[:t] * length, b[:tr], color: color)
end
def print_border_bottom(out, padding, length, border=:solid, color: :light_black)
return if border == :none
b = BORDER_MAP[border]
print_styled(out, padding, b[:bl], b[:b] * length, b[:br], color: color)
end
end
class Renderer
include BorderPrinter
def self.render(out, plot, newline)
new(plot).render(out, newline)
end
def initialize(plot)
@plot = plot
@out = nil
end
attr_reader :plot
attr_reader :out
def render(out, newline)
@out = out
init_render
render_top
render_rows
render_bottom
out.puts if newline
end
private
def render_top
# plot the title and the top border
print_title(@border_padding, plot.title, p_width: @border_length, color: :bold)
puts if plot.title_given?
if plot.show_labels?
topleft_str = plot.decorations.fetch(:tl, "")
topleft_col = plot.colors_deco.fetch(:tl, :light_black)
topmid_str = plot.decorations.fetch(:t, "")
topmid_col = plot.colors_deco.fetch(:t, :light_black)
topright_str = plot.decorations.fetch(:tr, "")
topright_col = plot.colors_deco.fetch(:tr, :light_black)
if topleft_str != "" || topright_str != "" || topmid_str != ""
topleft_len = topleft_str.length
topmid_len = topmid_str.length
topright_len = topright_str.length
print_styled(out, @border_padding, topleft_str, color: topleft_col)
cnt = (@border_length / 2.0 - topmid_len / 2.0 - topleft_len).round
pad = cnt > 0 ? " " * cnt : ""
print_styled(out, pad, topmid_str, color: topmid_col)
cnt = @border_length - topright_len - topleft_len - topmid_len + 2 - cnt
pad = cnt > 0 ? " " * cnt : ""
print_styled(out, pad, topright_str, "\n", color: topright_col)
end
end
print_border_top(out, @border_padding, @border_length, plot.border)
print(" " * @max_len_r, @plot_padding, "\n")
end
# render all rows
def render_rows
(0 ... plot.n_rows).each {|row| render_row(row) }
end
def render_row(row)
# Current labels to left and right of the row and their length
left_str = plot.labels_left.fetch(row, "")
left_col = plot.colors_left.fetch(row, :light_black)
right_str = plot.labels_right.fetch(row, "")
right_col = plot.colors_right.fetch(row, :light_black)
left_len = nocolor_string(left_str).length
right_len = nocolor_string(right_str).length
unless out.color?
left_str = nocolor_string(left_str)
right_str = nocolor_string(right_str)
end
# print left annotations
print(" " * plot.margin)
if plot.show_labels?
if row == @y_lab_row
# print ylabel
print_styled(out, plot.ylabel, color: :normal)
print(" " * (@max_len_l - plot.ylabel_length - left_len))
else
# print padding to fill ylabel length
print(" " * (@max_len_l - left_len))
end
# print the left annotation
print_styled(out, left_str, color: left_col)
end
# print left border
print_styled(out, @plot_padding, @b[:l], color: :light_black)
# print canvas row
plot.print_row(out, row)
#print right label and padding
print_styled(out, @b[:r], color: :light_black)
if plot.show_labels?
print(@plot_padding)
print_styled(out, right_str, color: right_col)
print(" " * (@max_len_r - right_len))
end
puts
end
def render_bottom
# draw bottom border and bottom labels
print_border_bottom(out, @border_padding, @border_length, plot.border)
print(" " * @max_len_r, @plot_padding)
if plot.show_labels?
botleft_str = plot.decorations.fetch(:bl, "")
botleft_col = plot.colors_deco.fetch(:bl, :light_black)
botmid_str = plot.decorations.fetch(:b, "")
botmid_col = plot.colors_deco.fetch(:b, :light_black)
botright_str = plot.decorations.fetch(:br, "")
botright_col = plot.colors_deco.fetch(:br, :light_black)
if botleft_str != "" || botright_str != "" || botmid_str != ""
puts
botleft_len = botleft_str.length
botmid_len = botmid_str.length
botright_len = botright_str.length
print_styled(out, @border_padding, botleft_str, color: botleft_col)
cnt = (@border_length / 2.0 - botmid_len / 2.0 - botleft_len).round
pad = cnt > 0 ? " " * cnt : ""
print_styled(out, pad, botmid_str, color: botmid_col)
cnt = @border_length - botright_len - botleft_len - botmid_len + 2 - cnt
pad = cnt > 0 ? " " * cnt : ""
print_styled(out, pad, botright_str, color: botright_col)
end
# abuse the print_title function to print the xlabel. maybe refactor this
puts if plot.xlabel_given?
print_title(@border_padding, plot.xlabel, p_width: @border_length)
end
end
def init_render
@b = BORDER_MAP[plot.border]
@border_length = plot.n_columns
# get length of largest strings to the left and right
@max_len_l = plot.show_labels? && !plot.labels_left.empty? ?
plot.labels_left.each_value.map {|l| nocolor_string(l).length }.max :
0
@max_len_r = plot.show_labels? && !plot.labels_right.empty? ?
plot.labels_right.each_value.map {|l| nocolor_string(l).length }.max :
0
if plot.show_labels? && plot.ylabel_given?
@max_len_l += plot.ylabel_length + 1
end
# offset where the plot (incl border) begins
@plot_offset = @max_len_l + plot.margin + plot.padding
# padding-string from left to border
@plot_padding = " " * plot.padding
# padding-string between labels and border
@border_padding = " " * @plot_offset
# compute position of ylabel
@y_lab_row = (plot.n_rows / 2.0).round - 1
end
def print_title(padding, title, p_width: 0, color: :normal)
return unless title && title != ""
offset = (p_width / 2.0 - title.length / 2.0).round
offset = [offset, 0].max
tpad = " " * offset
print_styled(out, padding, tpad, title, color: color)
end
def print(*args)
out.print(*args)
end
def puts(*args)
out.puts(*args)
end
def nocolor_string(str)
str.to_s.gsub(/\e\[[0-9]+m/, "")
end
end
end
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