Fix Avatar Resize (resize algo NearestNeighbor -> Bilinear) (#12745) (#12750)

* Update Vendor github.com/nfnt/resize

* switch resize algo NearestNeighbor -> Bilinear

go.mod

@@ -75,7 +75,7 @@ require (
 	github.com/microcosm-cc/bluemonday v1.0.3-0.20191119130333-0a75d7616912
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc
-	github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
+	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 	github.com/niklasfasching/go-org v0.1.9
 	github.com/oliamb/cutter v0.2.2
 	github.com/olivere/elastic/v7 v7.0.9

go.sum

@@ -483,8 +483,8 @@ github.com/mschoch/smat v0.2.0/go.mod h1:kc9mz7DoBKqDyiRL7VZN8KvXQMWeTaVnttLRXOl
 github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc h1:z1PgdCCmYYVL0BoJTUgmAq1p7ca8fzYIPsNyfsN3xAU=
 github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc/go.mod h1:np1wUFZ6tyoke22qDJZY40URn9Ae51gX7ljIWXN5TJs=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
-github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5 h1:BvoENQQU+fZ9uukda/RzCAL/191HHwJA5b13R6diVlY=
-github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/niklasfasching/go-org v0.1.9 h1:Toz8WMIt+qJb52uYEk1YD/muLuOOmRt1CfkV+bKVMkI=

modules/avatar/avatar.go

@@ -89,6 +89,6 @@ func Prepare(data []byte) (*image.Image, error) {
 		}
 	}
 
-	img = resize.Resize(AvatarSize, AvatarSize, img, resize.NearestNeighbor)
+	img = resize.Resize(AvatarSize, AvatarSize, img, resize.Bilinear)
 	return &img, nil
 }

vendor/github.com/nfnt/resize/.travis.yml

@@ -1,7 +1,7 @@
 language: go
 
 go:
-  - 1.1
-  - 1.2
-  - 1.3
-  - tip
+  - "1.x"
+  - "1.1"
+  - "1.4"
+  - "1.10"

vendor/github.com/nfnt/resize/README.md

@@ -1,3 +1,5 @@
+# This package is no longer being updated! Please look for alternatives if that bothers you.
+
 Resize
 ======
 

vendor/github.com/nfnt/resize/resize.go

@@ -78,6 +78,7 @@ var blur = 1.0
 // If one of the parameters width or height is set to 0, its size will be calculated so that
 // the aspect ratio is that of the originating image.
 // The resizing algorithm uses channels for parallel computation.
+// If the input image has width or height of 0, it is returned unchanged.
 func Resize(width, height uint, img image.Image, interp InterpolationFunction) image.Image {
 	scaleX, scaleY := calcFactors(width, height, float64(img.Bounds().Dx()), float64(img.Bounds().Dy()))
 	if width == 0 {
@@ -92,6 +93,11 @@ func Resize(width, height uint, img image.Image, interp InterpolationFunction) i
 		return img
 	}
 
+	// Input image has no pixels
+	if img.Bounds().Dx() <= 0 || img.Bounds().Dy() <= 0 {
+		return img
+	}
+
 	if interp == NearestNeighbor {
 		return resizeNearest(width, height, scaleX, scaleY, img, interp)
 	}

vendor/modules.txt

@@ -518,7 +518,7 @@ github.com/mschoch/smat
 # github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc
 ## explicit
 github.com/msteinert/pam
-# github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
+# github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 ## explicit
 github.com/nfnt/resize
 # github.com/niklasfasching/go-org v0.1.9