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ikcrm_common
paperclip
Commits
d594746f
Commit
d594746f
authored
Apr 19, 2012
by
Ryan Sonnek
Committed by
Mike Burns
May 31, 2012
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add Geometry#resize_to to calculate dimensions of new source
parent
5bf0619f
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2 changed files
with
53 additions
and
0 deletions
+53
-0
lib/paperclip/geometry.rb
+33
-0
test/geometry_test.rb
+20
-0
No files found.
lib/paperclip/geometry.rb
View file @
d594746f
...
@@ -101,6 +101,33 @@ module Paperclip
...
@@ -101,6 +101,33 @@ module Paperclip
[
scale_geometry
,
crop_geometry
]
[
scale_geometry
,
crop_geometry
]
end
end
# resize to a new geometry
# @param geometry [String] the Paperclip geometry definition to resize to
# @example
# Paperclip::Geometry.new(150, 150).resize_to('50x50!')
# #=> Paperclip::Geometry(50, 50)
def
resize_to
(
geometry
)
new_geometry
=
Paperclip
::
Geometry
.
parse
geometry
case
new_geometry
.
modifier
when
'!'
,
'#'
new_geometry
when
'>'
if
new_geometry
.
width
>=
self
.
width
&&
new_geometry
.
height
>=
self
.
height
self
else
scale_to
new_geometry
end
when
'<'
if
new_geometry
.
width
<=
self
.
width
||
new_geometry
.
height
<=
self
.
height
self
else
scale_to
new_geometry
end
else
scale_to
new_geometry
end
end
private
private
def
scaling
dst
,
ratio
def
scaling
dst
,
ratio
...
@@ -118,5 +145,11 @@ module Paperclip
...
@@ -118,5 +145,11 @@ module Paperclip
"%dx%d+%d+%d"
%
[
dst
.
width
,
dst
.
height
,
(
self
.
width
*
scale
-
dst
.
width
)
/
2
,
0
]
"%dx%d+%d+%d"
%
[
dst
.
width
,
dst
.
height
,
(
self
.
width
*
scale
-
dst
.
width
)
/
2
,
0
]
end
end
end
end
# scale to the requested geometry and preserve the aspect ratio
def
scale_to
(
new_geometry
)
scale
=
[
new_geometry
.
width
.
to_f
/
self
.
width
.
to_f
,
new_geometry
.
height
.
to_f
/
self
.
height
.
to_f
].
min
Paperclip
::
Geometry
.
new
(
self
.
width
*
scale
).
round
,
(
self
.
height
*
scale
).
round
end
end
end
end
end
test/geometry_test.rb
View file @
d594746f
require
'rubygems'
require
'./test/helper'
require
'./test/helper'
class
GeometryTest
<
Test
::
Unit
::
TestCase
class
GeometryTest
<
Test
::
Unit
::
TestCase
...
@@ -202,5 +203,24 @@ class GeometryTest < Test::Unit::TestCase
...
@@ -202,5 +203,24 @@ class GeometryTest < Test::Unit::TestCase
end
end
end
end
end
end
[[
'256x256'
,
'150x150!'
=>
[
150
,
150
],
'150x150#'
=>
[
150
,
150
],
'150x150>'
=>
[
150
,
150
],
'150x150<'
=>
[
256
,
256
],
'150x150'
=>
[
150
,
150
]],
[
'256x256'
,
'512x512!'
=>
[
512
,
512
],
'512x512#'
=>
[
512
,
512
],
'512x512>'
=>
[
256
,
256
],
'512x512<'
=>
[
512
,
512
],
'512x512'
=>
[
512
,
512
]],
[
'600x400'
,
'512x512!'
=>
[
512
,
512
],
'512x512#'
=>
[
512
,
512
],
'512x512>'
=>
[
512
,
341
],
'512x512<'
=>
[
600
,
400
],
'512x512'
=>
[
512
,
341
]]].
each
do
|
original_size
,
options
|
options
.
each_pair
do
|
size
,
dimensions
|
context
"
#{
original_size
}
resize_to
#{
size
}
"
do
setup
do
@source
=
Paperclip
::
Geometry
.
parse
original_size
@new_geometry
=
@source
.
resize_to
size
end
should
"have
#{
dimensions
.
first
}
width"
do
assert_equal
dimensions
.
first
,
@new_geometry
.
width
end
should
"have
#{
dimensions
.
last
}
height"
do
assert_equal
dimensions
.
last
,
@new_geometry
.
height
end
end
end
end
end
end
end
end
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