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resources/image: Fix fill with smartcrop sometimes returning 0 bytes images
Fixes #7955
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parent
8eafe0845d
commit
5af045ebab
3 changed files with 113 additions and 31 deletions
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@ -201,9 +201,26 @@ func (i *imageResource) Fill(spec string) (resource.Image, error) {
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return nil, err
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}
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return i.doWithImageConfig(conf, func(src image.Image) (image.Image, error) {
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img, err := i.doWithImageConfig(conf, func(src image.Image) (image.Image, error) {
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return i.Proc.ApplyFiltersFromConfig(src, conf)
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})
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if err != nil {
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return nil, err
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}
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if conf.Anchor == 0 && img.Width() == 0 || img.Height() == 0 {
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// See https://github.com/gohugoio/hugo/issues/7955
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// Smartcrop fails silently in some rare cases.
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// Fall back to a center fill.
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conf.Anchor = gift.CenterAnchor
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conf.AnchorStr = "center"
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return i.doWithImageConfig(conf, func(src image.Image) (image.Image, error) {
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return i.Proc.ApplyFiltersFromConfig(src, conf)
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})
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}
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return img, err
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}
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func (i *imageResource) Filter(filters ...interface{}) (resource.Image, error) {
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@ -175,36 +175,6 @@ func TestImageTransformFormat(t *testing.T) {
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assertFileCache(c, fileCache, path.Base(imageGif.RelPermalink()), 225, 141)
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}
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// https://github.com/gohugoio/hugo/issues/4261
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func TestImageTransformLongFilename(t *testing.T) {
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c := qt.New(t)
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image := fetchImage(c, "1234567890qwertyuiopasdfghjklzxcvbnm5to6eeeeee7via8eleph.jpg")
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c.Assert(image, qt.Not(qt.IsNil))
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resized, err := image.Resize("200x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 200)
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c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_65b757a6e14debeae720fe8831f0a9bc.jpg")
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resized, err = resized.Resize("100x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 100)
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c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_c876768085288f41211f768147ba2647.jpg")
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}
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// Issue 6137
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func TestImageTransformUppercaseExt(t *testing.T) {
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c := qt.New(t)
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image := fetchImage(c, "sunrise.JPG")
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resized, err := image.Resize("200x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 200)
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}
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// https://github.com/gohugoio/hugo/issues/5730
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func TestImagePermalinkPublishOrder(t *testing.T) {
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for _, checkOriginalFirst := range []bool{true, false} {
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@ -250,6 +220,70 @@ func TestImagePermalinkPublishOrder(t *testing.T) {
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}
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}
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func TestImageBugs(t *testing.T) {
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c := qt.New(t)
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// Issue #4261
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c.Run("Transform long filename", func(c *qt.C) {
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image := fetchImage(c, "1234567890qwertyuiopasdfghjklzxcvbnm5to6eeeeee7via8eleph.jpg")
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c.Assert(image, qt.Not(qt.IsNil))
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resized, err := image.Resize("200x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 200)
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c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_65b757a6e14debeae720fe8831f0a9bc.jpg")
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resized, err = resized.Resize("100x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 100)
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c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_c876768085288f41211f768147ba2647.jpg")
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})
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// Issue #6137
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c.Run("Transform upper case extension", func(c *qt.C) {
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image := fetchImage(c, "sunrise.JPG")
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resized, err := image.Resize("200x")
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, 200)
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})
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// Issue #7955
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c.Run("Fill with smartcrop", func(c *qt.C) {
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sunset := fetchImage(c, "sunset.jpg")
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for _, test := range []struct {
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originalDimensions string
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targetWH int
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}{
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{"408x403", 400},
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{"425x403", 400},
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{"459x429", 400},
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{"476x442", 400},
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{"544x403", 400},
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{"476x468", 400},
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{"578x585", 550},
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{"578x598", 550},
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} {
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c.Run(test.originalDimensions, func(c *qt.C) {
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image, err := sunset.Resize(test.originalDimensions)
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c.Assert(err, qt.IsNil)
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resized, err := image.Fill(fmt.Sprintf("%dx%d smart", test.targetWH, test.targetWH))
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c.Assert(err, qt.IsNil)
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c.Assert(resized, qt.Not(qt.IsNil))
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c.Assert(resized.Width(), qt.Equals, test.targetWH)
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c.Assert(resized.Height(), qt.Equals, test.targetWH)
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})
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}
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})
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}
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func TestImageTransformConcurrent(t *testing.T) {
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var wg sync.WaitGroup
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@ -15,6 +15,7 @@ package images
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import (
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"image"
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"math"
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"github.com/disintegration/gift"
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@ -41,6 +42,14 @@ type imagingResizer struct {
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}
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func (r imagingResizer) Resize(img image.Image, width, height uint) image.Image {
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// See https://github.com/gohugoio/hugo/issues/7955#issuecomment-861710681
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scaleX, scaleY := calcFactorsNfnt(width, height, float64(img.Bounds().Dx()), float64(img.Bounds().Dy()))
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if width == 0 {
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width = uint(math.Ceil(float64(img.Bounds().Dx()) / scaleX))
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}
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if height == 0 {
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height = uint(math.Ceil(float64(img.Bounds().Dy()) / scaleY))
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}
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result, _ := r.p.Filter(img, gift.Resize(int(width), int(height), r.filter))
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return result
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}
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@ -71,3 +80,25 @@ func (p *ImageProcessor) smartCrop(img image.Image, width, height int, filter gi
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return img.Bounds().Intersect(rect), nil
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}
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// Calculates scaling factors using old and new image dimensions.
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// Code borrowed from https://github.com/nfnt/resize/blob/83c6a9932646f83e3267f353373d47347b6036b2/resize.go#L593
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func calcFactorsNfnt(width, height uint, oldWidth, oldHeight float64) (scaleX, scaleY float64) {
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if width == 0 {
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if height == 0 {
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scaleX = 1.0
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scaleY = 1.0
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} else {
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scaleY = oldHeight / float64(height)
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scaleX = scaleY
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}
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} else {
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scaleX = oldWidth / float64(width)
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if height == 0 {
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scaleY = scaleX
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} else {
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scaleY = oldHeight / float64(height)
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}
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}
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return
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}
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