Module: DynamicImageElements::ElementInterface

Included in:
BlockElement, ImageElement, TableElement, TextElement
Defined in:
lib/elements/element_interface.rb

Overview

Interface providing default methods for all elements in composite. Also contain some private methods which helps element to process common tasks.

Instance Method Summary collapse

Instance Method Details

#final_size ⇒ Object

Gives array that contains size of space occupied of element. It’s calculated as #element_size + margin



83
84
85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/elements/element_interface.rb', line 83

def final_size
  w, h = element_size
  if @margin
    w += @margin[1] + @margin[3]
    h += @margin[0] + @margin[2]
  end
  if @border && !@border.empty?
    w += @border[:left][0] if @border[:left]
    w += @border[:right][0] if @border[:right]
    h += @border[:top][0] if @border[:top]
    h += @border[:bottom][0] if @border[:bottom]
  end
  [w, h]
end

#set_height(height, inner = true) ⇒ Object

Changes element’s height option



116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/elements/element_interface.rb', line 116

def set_height(height, inner = true) #:nodoc:
  if height.nil?
    @options[:height] = nil
  elsif height > 0
    unless inner
      height -= @padding[0] + @padding[2] if @padding
      height -= @margin[0] + @margin[2] if @margin
      if @border && !@border.empty?
        height -= @border[:top][0] if @border[:top]
        height -= @border[:bottom][0] if @border[:bottom]
      end
    end
    @options[:height] = height < 0 ? 0 : height
    recalculate_size!
  end
end

#set_width(width, inner = true) ⇒ Object

Changes element’s width option



99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
# File 'lib/elements/element_interface.rb', line 99

def set_width(width, inner = true) #:nodoc:
  if width.nil?
    @options[:width] = nil
  elsif width > 0
    unless inner
      width -= @padding[1] + @padding[3] if @padding
      width -= @margin[1] + @margin[3] if @margin
      if @border && !@border.empty?
        width -= @border[:left][0] if @border[:left]
        width -= @border[:right][0] if @border[:right]
      end
    end
    @options[:width] = width < 0 ? 0 : width
    recalculate_size!
  end
end