Class: Magick::Geometry
- Inherits:
-
Object
- Object
- Magick::Geometry
- Defined in:
- lib/rmagick_internal.rb
Constant Summary collapse
- FLAGS =
['', '%', '!', '<', '>', '@', '^']
- RFLAGS =
{ '%' => PercentGeometry, '!' => AspectGeometry, '<' => LessGeometry, '>' => GreaterGeometry, '@' => AreaGeometry, '^' => MinimumGeometry }
- W =
Construct an object from a geometry string
/(\d+\.\d+%?)|(\d*%?)/
- H =
W
- X =
/(?:([-+]\d+))?/
- Y =
X
- RE =
/\A#{W}x?#{H}#{X}#{Y}([!<>@\^]?)\Z/
Instance Attribute Summary collapse
-
#flag ⇒ Object
Returns the value of attribute flag.
-
#height ⇒ Object
Returns the value of attribute height.
-
#width ⇒ Object
Returns the value of attribute width.
-
#x ⇒ Object
Returns the value of attribute x.
-
#y ⇒ Object
Returns the value of attribute y.
Class Method Summary collapse
Instance Method Summary collapse
-
#initialize(width = nil, height = nil, x = nil, y = nil, flag = nil) ⇒ Geometry
constructor
A new instance of Geometry.
-
#to_s ⇒ Object
Convert object to a geometry string.
Constructor Details
#initialize(width = nil, height = nil, x = nil, y = nil, flag = nil) ⇒ Geometry
Returns a new instance of Geometry.
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 |
# File 'lib/rmagick_internal.rb', line 90 def initialize(width = nil, height = nil, x = nil, y = nil, flag = nil) raise(ArgumentError, "width set to #{width}") if width.is_a? GeometryValue raise(ArgumentError, "height set to #{height}") if height.is_a? GeometryValue raise(ArgumentError, "x set to #{x}") if x.is_a? GeometryValue raise(ArgumentError, "y set to #{y}") if y.is_a? GeometryValue # Support floating-point width and height arguments so Geometry # objects can be used to specify Image#density= arguments. if width.nil? @width = 0 elsif width.to_f >= 0.0 @width = width.to_f else Kernel.raise ArgumentError, "width must be >= 0: #{width}" end if height.nil? @height = 0 elsif height.to_f >= 0.0 @height = height.to_f else Kernel.raise ArgumentError, "height must be >= 0: #{height}" end @x = x.to_i @y = y.to_i @flag = flag end |
Instance Attribute Details
#flag ⇒ Object
Returns the value of attribute flag.
88 89 90 |
# File 'lib/rmagick_internal.rb', line 88 def flag @flag end |
#height ⇒ Object
Returns the value of attribute height.
88 89 90 |
# File 'lib/rmagick_internal.rb', line 88 def height @height end |
#width ⇒ Object
Returns the value of attribute width.
88 89 90 |
# File 'lib/rmagick_internal.rb', line 88 def width @width end |
#x ⇒ Object
Returns the value of attribute x.
88 89 90 |
# File 'lib/rmagick_internal.rb', line 88 def x @x end |
#y ⇒ Object
Returns the value of attribute y.
88 89 90 |
# File 'lib/rmagick_internal.rb', line 88 def y @y end |
Class Method Details
.from_s(str) ⇒ Object
125 126 127 128 129 130 131 132 133 134 135 136 137 138 |
# File 'lib/rmagick_internal.rb', line 125 def self.from_s(str) m = RE.match(str) if m width = (m[1] || m[2]).to_f height = (m[3] || m[4]).to_f x = m[5].to_i y = m[6].to_i flag = RFLAGS[m[7]] else Kernel.raise ArgumentError, 'invalid geometry format' end flag = PercentGeometry if str['%'] Geometry.new(width, height, x, y, flag) end |
Instance Method Details
#to_s ⇒ Object
Convert object to a geometry string
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 |
# File 'lib/rmagick_internal.rb', line 141 def to_s str = '' if @width > 0 fmt = @width.truncate == @width ? '%d' : '%.2f' str << sprintf(fmt, @width) str << '%' if @flag == PercentGeometry end str << 'x' if (@width > 0 && @flag != PercentGeometry) || (@height > 0) if @height > 0 fmt = @height.truncate == @height ? '%d' : '%.2f' str << sprintf(fmt, @height) str << '%' if @flag == PercentGeometry end str << sprintf('%+d%+d', @x, @y) if @x != 0 || @y != 0 str << FLAGS[@flag.to_i] if @flag != PercentGeometry str end |