Class: Demos::StockDecider::StackedBar

Inherits:
Hokusai::Block show all
Defined in:
ui/examples/stock.rb

Overview

Expecting a data prop in the form of

Constant Summary collapse

COLORS = 
{
  :week_3 => [157, 221, 117],
  :week_4 => [117, 157, 221],
  :week_5 => [221, 180, 117]
}

Instance Attribute Summary

Attributes inherited from Hokusai::Block

#node, #provides, #publisher

Instance Method Summary collapse

Methods inherited from Hokusai::Block

#children, #children?, compile, computed, computed!, #draw, #draw_with, #dump, #emit, #initialize, inject, inject!, #method_missing, mount, #on_resize, provide, provides, style, styles_get, template, template_from_file, template_get, #update, use, uses

Constructor Details

This class inherits a constructor from Hokusai::Block

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Hokusai::Block

Instance Method Details

#render(canvas) {|canvas| ... } ⇒ Object

Yields:

  • (canvas) 


34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'ui/examples/stock.rb', line 34

def render(canvas)
  key, weeks = data
  theight = canvas.height - 50
  draw do
    weeks.reject(&:nil?).sort { |a, b| b <=> a }.each_with_index do |percent, idx|
      color = COLORS["week_#{idx + 3}".to_sym]
      height = (theight * percent) / 100
      y = canvas.y + theight - height

      rect(canvas.x, y , 150, height) do |command|
        command.color = Hokusai::Color.convert(color)
        command.outline = Hokusai::Outline.convert("4,4, 0, 0")
        command.outline_color = Hokusai::Color.convert("0,0,0,110")
      end

      text("Week #{idx + 3} (#{percent.round(2)})", canvas.x + 2, y + 10) do |command|
        command.size = 12
      end
    end

    text(symbol, canvas.x + 12, theight + 5) do |command|
      command.size = 25
      command.color = Hokusai::Color.new(233,233,233,255)
    end
  end

  canvas.x -= 100
  yield canvas
end

#symbol ⇒ Object 



30
31
32
 
# File 'ui/examples/stock.rb', line 30

def symbol
  data[0]
end