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Diffstat (limited to 'vendor/github.com/nfnt/resize/thumbnail.go')
-rw-r--r-- | vendor/github.com/nfnt/resize/thumbnail.go | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/vendor/github.com/nfnt/resize/thumbnail.go b/vendor/github.com/nfnt/resize/thumbnail.go deleted file mode 100644 index 9efc246b..00000000 --- a/vendor/github.com/nfnt/resize/thumbnail.go +++ /dev/null @@ -1,55 +0,0 @@ -/* -Copyright (c) 2012, Jan Schlicht <jan.schlicht@gmail.com> - -Permission to use, copy, modify, and/or distribute this software for any purpose -with or without fee is hereby granted, provided that the above copyright notice -and this permission notice appear in all copies. - -THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH -REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND -FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, -INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS -OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER -TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF -THIS SOFTWARE. -*/ - -package resize - -import ( - "image" -) - -// Thumbnail will downscale provided image to max width and height preserving -// original aspect ratio and using the interpolation function interp. -// It will return original image, without processing it, if original sizes -// are already smaller than provided constraints. -func Thumbnail(maxWidth, maxHeight uint, img image.Image, interp InterpolationFunction) image.Image { - origBounds := img.Bounds() - origWidth := uint(origBounds.Dx()) - origHeight := uint(origBounds.Dy()) - newWidth, newHeight := origWidth, origHeight - - // Return original image if it have same or smaller size as constraints - if maxWidth >= origWidth && maxHeight >= origHeight { - return img - } - - // Preserve aspect ratio - if origWidth > maxWidth { - newHeight = uint(origHeight * maxWidth / origWidth) - if newHeight < 1 { - newHeight = 1 - } - newWidth = maxWidth - } - - if newHeight > maxHeight { - newWidth = uint(newWidth * maxHeight / newHeight) - if newWidth < 1 { - newWidth = 1 - } - newHeight = maxHeight - } - return Resize(newWidth, newHeight, img, interp) -} |