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Contents
module Milton
# Generic view of an "Image", or rather, something with a width and a
# height we care about =).
class Image
attr_accessor :width
attr_accessor :height
class << self
# Instantiates a new image from the given path. Uses ImageMagick's
# identify method to determine the width and height of the image with
# the given path and returns a new Image with those dimensions.
#
# Raises a MissingFileError if the given path could not be identify'd
# by ImageMagick (resulting in a height and width).
def from_path(path)
raise Milton::MissingFileError.new("Could not identify #{path} as an image, does the file exist?") unless Milton.syscall("identify #{path}") =~ /.*? (\d+)x(\d+)\+\d+\+\d+/
new($1, $2)
end
# Instantiates a new image from the given geometry string. A geometry
# string is just something like 50x40. The first number is the width
# and the second is the height.
def from_geometry(geometry)
new(*(geometry.split("x").collect(&:to_i)))
end
end
# Instantiates a new Image with the given width and height
def initialize(width=nil, height=nil)
@width = width.to_i
@height = height.to_i
end
# Returns the larger dimension of the Image
def larger_dimension
width > height ? width : height
end
# Returns true if the Image is wider than it is tall
def wider?
width > height
end
# Returns true if the Image is square
def square?
width == height
end
end
end
Version data entries
6 entries across 6 versions & 2 rubygems