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 98 98: def Geometry.from_s(str) 99: 100: m = RE.match(str) 101: if m 102: width = (m[1] || m[2]).to_f 103: height = (m[3] || m[4]).to_f 104: x = m[5].to_i 105: y = m[6].to_i 106: flag = RFLAGS[m[7]] 107: else 108: Kernel.raise ArgumentError, "invalid geometry format" 109: end 110: if str['%'] 111: flag = PercentGeometry 112: end 113: Geometry.new(width, height, x, y, flag) 114: end
# File lib/RMagick.rb, line 62 62: def initialize(width=nil, height=nil, x=nil, y=nil, flag=nil) 63: raise(ArgumentError, "width set to #{width.to_s}") if width.is_a? GeometryValue 64: raise(ArgumentError, "height set to #{height.to_s}") if height.is_a? GeometryValue 65: raise(ArgumentError, "x set to #{x.to_s}") if x.is_a? GeometryValue 66: raise(ArgumentError, "y set to #{y.to_s}") if y.is_a? GeometryValue 67: 68: # Support floating-point width and height arguments so Geometry 69: # objects can be used to specify Image#density= arguments. 70: if width == nil 71: @width = 0 72: elsif width.to_f >= 0.0 73: @width = width.to_f 74: else 75: Kernel.raise ArgumentError, "width must be >= 0: #{width}" 76: end 77: if height == nil 78: @height = 0 79: elsif height.to_f >= 0.0 80: @height = height.to_f 81: else 82: Kernel.raise ArgumentError, "height must be >= 0: #{height}" 83: end 84: 85: @x = x.to_i 86: @y = y.to_i 87: @flag = flag 88: 89: end
Convert object to a geometry string
# File lib/RMagick.rb, line 117 117: def to_s 118: str = '' 119: if @width > 0 120: fmt = @width.truncate == @width ? "%d" : "%.2f" 121: str << sprintf(fmt, @width) 122: str << '%' if @flag == PercentGeometry 123: end 124: 125: if (@width > 0 && @flag != PercentGeometry) || (@height > 0) 126: str << 'x' 127: end 128: 129: if @height > 0 130: fmt = @height.truncate == @height ? "%d" : "%.2f" 131: str << sprintf(fmt, @height) 132: str << '%' if @flag == PercentGeometry 133: end 134: str << sprintf("%+d%+d", @x, @y) if (@x != 0 || @y != 0) 135: if @flag != PercentGeometry 136: str << FLAGS[@flag.to_i] 137: end 138: str 139: end