Class | Magick::Geometry |
In: |
lib/RMagick.rb
|
Parent: | Object |
FLAGS | = | ['', '%', '!', '<', '>', '@', '^'] | ||
RFLAGS | = | { '%' => PercentGeometry, '!' => AspectGeometry, '<' => LessGeometry, '>' => GreaterGeometry, '@' => AreaGeometry, '^' => MinimumGeometry } | ||
W | = | /(\d+\.\d+%?)|(\d*%?)/ | Construct an object from a geometry string | |
H | = | W | ||
X | = | /(?:([-+]\d+))?/ | ||
Y | = | X | ||
RE | = | /\A#{W}x?#{H}#{X}#{Y}([!<>@\^]?)\Z/ |
flag | [RW] | |
height | [RW] | |
width | [RW] | |
x | [RW] | |
y | [RW] |
# File lib/RMagick.rb, line 96 96: def Geometry.from_s(str) 97: 98: m = RE.match(str) 99: if m 100: width = (m[1] || m[2]).to_f 101: height = (m[3] || m[4]).to_f 102: x = m[5].to_i 103: y = m[6].to_i 104: flag = RFLAGS[m[7]] 105: else 106: Kernel.raise ArgumentError, "invalid geometry format" 107: end 108: if str['%'] 109: flag = PercentGeometry 110: end 111: Geometry.new(width, height, x, y, flag) 112: end
# File lib/RMagick.rb, line 60 60: def initialize(width=nil, height=nil, x=nil, y=nil, flag=nil) 61: raise(ArgumentError, "width set to #{width.to_s}") if width.is_a? GeometryValue 62: raise(ArgumentError, "height set to #{height.to_s}") if height.is_a? GeometryValue 63: raise(ArgumentError, "x set to #{x.to_s}") if x.is_a? GeometryValue 64: raise(ArgumentError, "y set to #{y.to_s}") if y.is_a? GeometryValue 65: 66: # Support floating-point width and height arguments so Geometry 67: # objects can be used to specify Image#density= arguments. 68: if width == nil 69: @width = 0 70: elsif width.to_f >= 0.0 71: @width = width.to_f 72: else 73: Kernel.raise ArgumentError, "width must be >= 0: #{width}" 74: end 75: if height == nil 76: @height = 0 77: elsif height.to_f >= 0.0 78: @height = height.to_f 79: else 80: Kernel.raise ArgumentError, "height must be >= 0: #{height}" 81: end 82: 83: @x = x.to_i 84: @y = y.to_i 85: @flag = flag 86: 87: end
Convert object to a geometry string
# File lib/RMagick.rb, line 115 115: def to_s 116: str = '' 117: if @width > 0 118: fmt = @width.truncate == @width ? "%d" : "%.2f" 119: str << sprintf(fmt, @width) 120: str << '%' if @flag == PercentGeometry 121: end 122: 123: if (@width > 0 && @flag != PercentGeometry) || (@height > 0) 124: str << 'x' 125: end 126: 127: if @height > 0 128: fmt = @height.truncate == @height ? "%d" : "%.2f" 129: str << sprintf(fmt, @height) 130: str << '%' if @flag == PercentGeometry 131: end 132: str << sprintf("%+d%+d", @x, @y) if (@x != 0 || @y != 0) 133: if @flag != PercentGeometry 134: str << FLAGS[@flag.to_i] 135: end 136: str 137: end