Class: CTioga2::Graphics::Legends::MultiColumnLegend
- Inherits:
-
LegendItem
- Object
- LegendItem
- CTioga2::Graphics::Legends::MultiColumnLegend
- Defined in:
- lib/ctioga2/graphics/legends/multicols.rb
Overview
TODO:
Add support for tiling on lines too ;-)…
TODO:
Add support for filling up to some width/height.
TODO:
Choose the order (vert first or horiz first)
This class is an item that holds other items, and displays them in columns.
Instance Attribute Summary collapse
-
#storage ⇒ Object
The underlying storage.
-
#style ⇒ Object
The style.
Instance Method Summary collapse
-
#add_item(item) ⇒ Object
Adds an item to the underlying storage.
-
#draw(t, legend_style, x, y) ⇒ Object
Draws all the legends.
-
#initialize(cols = 2) ⇒ MultiColumnLegend
constructor
A new instance of MultiColumnLegend.
-
#size(t, legend_style) ⇒ Object
Computes the size of all the legends, and also update the.
Constructor Details
#initialize(cols = 2) ⇒ MultiColumnLegend
Returns a new instance of MultiColumnLegend.
41 42 43 44 45 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 41 def initialize(cols = 2) super() @storage = LegendStorage.new @style = Styles::MultiColumnLegendStyle.new end |
Instance Attribute Details
#storage ⇒ Object
The underlying storage
36 37 38 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 36 def storage @storage end |
#style ⇒ Object
The style
39 40 41 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 39 def style @style end |
Instance Method Details
#add_item(item) ⇒ Object
Adds an item to the underlying storage.
48 49 50 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 48 def add_item(item) @storage.add_item(item) end |
#draw(t, legend_style, x, y) ⇒ Object
Draws all the legends
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 53 def draw(t, legend_style, x, y) items = storage.harvest_contents() size(t, legend_style) index = 0 dy = 0 dx = 0 cur_height = legend_style.dy_to_figure(t) for it in items w, h = it.size(t, legend_style) col = index % @style.columns # Flush if col == 0 dy -= cur_height unless index == 0 dx = 0 cur_height = h else dx += @column_widths[col - 1] end if cur_height < h cur_height = h end it.draw(t, legend_style, x + dx, y + dy) index += 1 end end |
#size(t, legend_style) ⇒ Object
Computes the size of all the legends, and also update the
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 |
# File 'lib/ctioga2/graphics/legends/multicols.rb', line 89 def size(t, legend_style) items = storage.harvest_contents() # Always that much ! cur_height = legend_style.dy_to_figure(t) widths = [0] * @style.columns height = 0 index = 0 for it in items w,h = it.size(t, legend_style) col = index % @style.columns # Flush if col == 0 height += cur_height unless index == 0 cur_height = h end if widths[col] < w widths[col] = w end if cur_height < h cur_height = h end index += 1 end height += cur_height # Now add padding to the columns widths: (widths.size()-1).times do |i| widths[i] += @style.dx.to_figure(t, :x) end @column_widths = widths width = widths.reduce(:+) # Do padding ! return [width, height] end |