forked from gitea/gitea
Improve handling of non-square avatars (#7025)
* Crop avatar before resizing (#1268) Signed-off-by: Rob Watson <rfwatson@users.noreply.github.com> * Fix spelling error Signed-off-by: Rob Watson <rfwatson@users.noreply.github.com>
This commit is contained in:
Rob Watson
Lauris BH
parent
5f05aa13e0
commit
df2557835b
1
go.mod
1
go.mod
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@ -90,6 +90,7 @@ require (
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github.com/mschoch/smat v0.0.0-20160514031455-90eadee771ae // indirect
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github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc
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github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
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github.com/oliamb/cutter v0.2.2
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github.com/philhofer/fwd v1.0.0 // indirect
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github.com/pkg/errors v0.8.1 // indirect
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github.com/pquerna/otp v0.0.0-20160912161815-54653902c20e
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2
go.sum
2
go.sum
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@ -244,6 +244,8 @@ github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc h1:z1PgdCCmYYVL0BoJT
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github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc/go.mod h1:np1wUFZ6tyoke22qDJZY40URn9Ae51gX7ljIWXN5TJs=
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github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5 h1:BvoENQQU+fZ9uukda/RzCAL/191HHwJA5b13R6diVlY=
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github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
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github.com/oliamb/cutter v0.2.2 h1:Lfwkya0HHNU1YLnGv2hTkzHfasrSMkgv4Dn+5rmlk3k=
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github.com/oliamb/cutter v0.2.2/go.mod h1:4BenG2/4GuRBDbVm/OPahDVqbrOemzpPiG5mi1iryBU=
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github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
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github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs=
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github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
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@ -6,7 +6,6 @@
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package models
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import (
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"bytes"
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"container/list"
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"crypto/md5"
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"crypto/sha256"
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@ -14,7 +13,6 @@ import (
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"encoding/hex"
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"errors"
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"fmt"
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"image"
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// Needed for jpeg support
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_ "image/jpeg"
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@ -39,7 +37,6 @@ import (
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"github.com/go-xorm/builder"
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"github.com/go-xorm/core"
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"github.com/go-xorm/xorm"
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"github.com/nfnt/resize"
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"golang.org/x/crypto/pbkdf2"
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"golang.org/x/crypto/ssh"
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)
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@ -457,23 +454,10 @@ func (u *User) IsPasswordSet() bool {
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// UploadAvatar saves custom avatar for user.
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// FIXME: split uploads to different subdirs in case we have massive users.
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func (u *User) UploadAvatar(data []byte) error {
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imgCfg, _, err := image.DecodeConfig(bytes.NewReader(data))
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m, err := avatar.Prepare(data)
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if err != nil {
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return fmt.Errorf("DecodeConfig: %v", err)
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return err
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}
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if imgCfg.Width > setting.AvatarMaxWidth {
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return fmt.Errorf("Image width is to large: %d > %d", imgCfg.Width, setting.AvatarMaxWidth)
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}
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if imgCfg.Height > setting.AvatarMaxHeight {
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return fmt.Errorf("Image height is to large: %d > %d", imgCfg.Height, setting.AvatarMaxHeight)
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}
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img, _, err := image.Decode(bytes.NewReader(data))
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if err != nil {
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return fmt.Errorf("Decode: %v", err)
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}
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m := resize.Resize(avatar.AvatarSize, avatar.AvatarSize, img, resize.NearestNeighbor)
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sess := x.NewSession()
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defer sess.Close()
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@ -497,7 +481,7 @@ func (u *User) UploadAvatar(data []byte) error {
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}
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defer fw.Close()
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if err = png.Encode(fw, m); err != nil {
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if err = png.Encode(fw, *m); err != nil {
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return fmt.Errorf("Encode: %v", err)
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}
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@ -5,13 +5,20 @@
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package avatar
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import (
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"bytes"
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"fmt"
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"image"
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"image/color/palette"
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// Enable PNG support:
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_ "image/png"
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"math/rand"
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"time"
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"code.gitea.io/gitea/modules/setting"
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"github.com/issue9/identicon"
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"github.com/nfnt/resize"
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"github.com/oliamb/cutter"
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)
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// AvatarSize returns avatar's size
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@ -42,3 +49,46 @@ func RandomImageSize(size int, data []byte) (image.Image, error) {
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func RandomImage(data []byte) (image.Image, error) {
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return RandomImageSize(AvatarSize, data)
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}
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// Prepare accepts a byte slice as input, validates it contains an image of an
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// acceptable format, and crops and resizes it appropriately.
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func Prepare(data []byte) (*image.Image, error) {
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imgCfg, _, err := image.DecodeConfig(bytes.NewReader(data))
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if err != nil {
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return nil, fmt.Errorf("DecodeConfig: %v", err)
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}
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if imgCfg.Width > setting.AvatarMaxWidth {
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return nil, fmt.Errorf("Image width is too large: %d > %d", imgCfg.Width, setting.AvatarMaxWidth)
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}
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if imgCfg.Height > setting.AvatarMaxHeight {
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return nil, fmt.Errorf("Image height is too large: %d > %d", imgCfg.Height, setting.AvatarMaxHeight)
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}
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img, _, err := image.Decode(bytes.NewReader(data))
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if err != nil {
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return nil, fmt.Errorf("Decode: %v", err)
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}
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if imgCfg.Width != imgCfg.Height {
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var newSize, ax, ay int
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if imgCfg.Width > imgCfg.Height {
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newSize = imgCfg.Height
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ax = (imgCfg.Width - imgCfg.Height) / 2
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} else {
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newSize = imgCfg.Width
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ay = (imgCfg.Height - imgCfg.Width) / 2
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}
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img, err = cutter.Crop(img, cutter.Config{
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Width: newSize,
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Height: newSize,
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Anchor: image.Point{ax, ay},
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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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}
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img = resize.Resize(AvatarSize, AvatarSize, img, resize.NearestNeighbor)
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return &img, nil
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}
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@ -5,8 +5,11 @@
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package avatar
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import (
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"io/ioutil"
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"testing"
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"code.gitea.io/gitea/modules/setting"
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"github.com/stretchr/testify/assert"
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)
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@ -17,3 +20,49 @@ func Test_RandomImage(t *testing.T) {
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_, err = RandomImageSize(0, []byte("gogs@local"))
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assert.Error(t, err)
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}
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func Test_PrepareWithPNG(t *testing.T) {
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setting.AvatarMaxWidth = 4096
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setting.AvatarMaxHeight = 4096
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data, err := ioutil.ReadFile("testdata/avatar.png")
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assert.NoError(t, err)
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imgPtr, err := Prepare(data)
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assert.NoError(t, err)
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assert.Equal(t, 290, (*imgPtr).Bounds().Max.X)
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assert.Equal(t, 290, (*imgPtr).Bounds().Max.Y)
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}
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func Test_PrepareWithJPEG(t *testing.T) {
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setting.AvatarMaxWidth = 4096
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setting.AvatarMaxHeight = 4096
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data, err := ioutil.ReadFile("testdata/avatar.jpeg")
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assert.NoError(t, err)
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imgPtr, err := Prepare(data)
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assert.NoError(t, err)
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assert.Equal(t, 290, (*imgPtr).Bounds().Max.X)
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assert.Equal(t, 290, (*imgPtr).Bounds().Max.Y)
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}
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func Test_PrepareWithInvalidImage(t *testing.T) {
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setting.AvatarMaxWidth = 5
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setting.AvatarMaxHeight = 5
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_, err := Prepare([]byte{})
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assert.EqualError(t, err, "DecodeConfig: image: unknown format")
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}
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func Test_PrepareWithInvalidImageSize(t *testing.T) {
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setting.AvatarMaxWidth = 5
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setting.AvatarMaxHeight = 5
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data, err := ioutil.ReadFile("testdata/avatar.png")
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assert.NoError(t, err)
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_, err = Prepare(data)
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assert.EqualError(t, err, "Image width is too large: 10 > 5")
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}
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Binary file not shown.
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After Width: | Height: | Size: 521 B |
Binary file not shown.
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After Width: | Height: | Size: 159 B |
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@ -0,0 +1,22 @@
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
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*.o
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*.a
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*.so
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# Folders
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_obj
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_test
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# Architecture specific extensions/prefixes
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*.[568vq]
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[568vq].out
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*.cgo1.go
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*.cgo2.c
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_cgo_defun.c
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_cgo_gotypes.go
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_cgo_export.*
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_testmain.go
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*.exe
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@ -0,0 +1,6 @@
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language: go
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go:
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- 1.0
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- 1.1
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- tip
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@ -0,0 +1,20 @@
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The MIT License (MIT)
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Copyright (c) 2014 Olivier Amblet
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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|
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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@ -0,0 +1,107 @@
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Cutter
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======
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A Go library to crop images.
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[](https://travis-ci.org/oliamb/cutter)
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[](https://godoc.org/github.com/oliamb/cutter)
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Cutter was initially developped to be able
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to crop image resized using github.com/nfnt/resize.
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Usage
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-----
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Read the doc on https://godoc.org/github.com/oliamb/cutter
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Import package with
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```go
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import "github.com/oliamb/cutter"
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```
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Package cutter provides a function to crop image.
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By default, the original image will be cropped at the
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given size from the top left corner.
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|
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```go
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croppedImg, err := cutter.Crop(img, cutter.Config{
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Width: 250,
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Height: 500,
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})
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```
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Most of the time, the cropped image will share some memory
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with the original, so it should be used read only. You must
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ask explicitely for a copy if nedded.
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|
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```go
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croppedImg, err := cutter.Crop(img, cutter.Config{
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Width: 250,
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Height: 500,
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Options: cutter.Copy,
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})
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```
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It is possible to specify the top left position:
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|
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```go
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croppedImg, err := cutter.Crop(img, cutter.Config{
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Width: 250,
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Height: 500,
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Anchor: image.Point{100, 100},
|
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Mode: cutter.TopLeft, // optional, default value
|
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})
|
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```
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|
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The Anchor property can represents the center of the cropped image
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instead of the top left corner:
|
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|
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```go
|
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croppedImg, err := cutter.Crop(img, cutter.Config{
|
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Width: 250,
|
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Height: 500,
|
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Mode: cutter.Centered,
|
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})
|
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```
|
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|
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The default crop use the specified dimension, but it is possible
|
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to use Width and Heigth as a ratio instead. In this case,
|
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the resulting image will be as big as possible to fit the asked ratio
|
||||
from the anchor position.
|
||||
|
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```go
|
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croppedImg, err := cutter.Crop(baseImage, cutter.Config{
|
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Width: 4,
|
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Height: 3,
|
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Mode: cutter.Centered,
|
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Options: cutter.Ratio&cutter.Copy, // Copy is useless here
|
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})
|
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```
|
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|
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About resize
|
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------------
|
||||
This lib only manage crop and won't resize image, but it works great in combination with [github.com/nfnt/resize](https://github.com/nfnt/resize)
|
||||
|
||||
Contributing
|
||||
------------
|
||||
I'd love to see your contributions to Cutter. If you'd like to hack on it:
|
||||
|
||||
- fork the project,
|
||||
- hack on it,
|
||||
- ensure tests pass,
|
||||
- make a pull request
|
||||
|
||||
If you plan to modify the API, let's disscuss it first.
|
||||
|
||||
Licensing
|
||||
---------
|
||||
MIT License, Please see the file called LICENSE.
|
||||
|
||||
Credits
|
||||
-------
|
||||
Test Picture: Gopher picture from Heidi Schuyt, http://www.flickr.com/photos/hschuyt/7674222278/,
|
||||
© copyright Creative Commons(http://creativecommons.org/licenses/by-nc-sa/2.0/)
|
||||
|
||||
Thanks to Urturn(http://www.urturn.com) for the time allocated to develop the library.
|
||||
|
|
@ -0,0 +1,192 @@
|
|||
/*
|
||||
Package cutter provides a function to crop image.
|
||||
|
||||
By default, the original image will be cropped at the
|
||||
given size from the top left corner.
|
||||
|
||||
croppedImg, err := cutter.Crop(img, cutter.Config{
|
||||
Width: 250,
|
||||
Height: 500,
|
||||
})
|
||||
|
||||
Most of the time, the cropped image will share some memory
|
||||
with the original, so it should be used read only. You must
|
||||
ask explicitely for a copy if nedded.
|
||||
|
||||
croppedImg, err := cutter.Crop(img, cutter.Config{
|
||||
Width: 250,
|
||||
Height: 500,
|
||||
Options: Copy,
|
||||
})
|
||||
|
||||
It is possible to specify the top left position:
|
||||
|
||||
croppedImg, err := cutter.Crop(img, cutter.Config{
|
||||
Width: 250,
|
||||
Height: 500,
|
||||
Anchor: image.Point{100, 100},
|
||||
Mode: TopLeft, // optional, default value
|
||||
})
|
||||
|
||||
The Anchor property can represents the center of the cropped image
|
||||
instead of the top left corner:
|
||||
|
||||
|
||||
croppedImg, err := cutter.Crop(img, cutter.Config{
|
||||
Width: 250,
|
||||
Height: 500,
|
||||
Mode: Centered,
|
||||
})
|
||||
|
||||
The default crop use the specified dimension, but it is possible
|
||||
to use Width and Heigth as a ratio instead. In this case,
|
||||
the resulting image will be as big as possible to fit the asked ratio
|
||||
from the anchor position.
|
||||
|
||||
croppedImg, err := cutter.Crop(baseImage, cutter.Config{
|
||||
Width: 4,
|
||||
Height: 3,
|
||||
Mode: Centered,
|
||||
Options: Ratio,
|
||||
})
|
||||
*/
|
||||
package cutter
|
||||
|
||||
import (
|
||||
"image"
|
||||
"image/draw"
|
||||
)
|
||||
|
||||
// Config is used to defined
|
||||
// the way the crop should be realized.
|
||||
type Config struct {
|
||||
Width, Height int
|
||||
Anchor image.Point // The Anchor Point in the source image
|
||||
Mode AnchorMode // Which point in the resulting image the Anchor Point is referring to
|
||||
Options Option
|
||||
}
|
||||
|
||||
// AnchorMode is an enumeration of the position an anchor can represent.
|
||||
type AnchorMode int
|
||||
|
||||
const (
|
||||
// TopLeft defines the Anchor Point
|
||||
// as the top left of the cropped picture.
|
||||
TopLeft AnchorMode = iota
|
||||
// Centered defines the Anchor Point
|
||||
// as the center of the cropped picture.
|
||||
Centered = iota
|
||||
)
|
||||
|
||||
// Option flags to modify the way the crop is done.
|
||||
type Option int
|
||||
|
||||
const (
|
||||
// Ratio flag is use when Width and Height
|
||||
// must be used to compute a ratio rather
|
||||
// than absolute size in pixels.
|
||||
Ratio Option = 1 << iota
|
||||
// Copy flag is used to enforce the function
|
||||
// to retrieve a copy of the selected pixels.
|
||||
// This disable the use of SubImage method
|
||||
// to compute the result.
|
||||
Copy = 1 << iota
|
||||
)
|
||||
|
||||
// An interface that is
|
||||
// image.Image + SubImage method.
|
||||
type subImageSupported interface {
|
||||
SubImage(r image.Rectangle) image.Image
|
||||
}
|
||||
|
||||
// Crop retrieves an image that is a
|
||||
// cropped copy of the original img.
|
||||
//
|
||||
// The crop is made given the informations provided in config.
|
||||
func Crop(img image.Image, c Config) (image.Image, error) {
|
||||
maxBounds := c.maxBounds(img.Bounds())
|
||||
size := c.computeSize(maxBounds, image.Point{c.Width, c.Height})
|
||||
cr := c.computedCropArea(img.Bounds(), size)
|
||||
cr = img.Bounds().Intersect(cr)
|
||||
|
||||
if c.Options&Copy == Copy {
|
||||
return cropWithCopy(img, cr)
|
||||
}
|
||||
if dImg, ok := img.(subImageSupported); ok {
|
||||
return dImg.SubImage(cr), nil
|
||||
}
|
||||
return cropWithCopy(img, cr)
|
||||
}
|
||||
|
||||
func cropWithCopy(img image.Image, cr image.Rectangle) (image.Image, error) {
|
||||
result := image.NewRGBA(cr)
|
||||
draw.Draw(result, cr, img, cr.Min, draw.Src)
|
||||
return result, nil
|
||||
}
|
||||
|
||||
func (c Config) maxBounds(bounds image.Rectangle) (r image.Rectangle) {
|
||||
if c.Mode == Centered {
|
||||
anchor := c.centeredMin(bounds)
|
||||
w := min(anchor.X-bounds.Min.X, bounds.Max.X-anchor.X)
|
||||
h := min(anchor.Y-bounds.Min.Y, bounds.Max.Y-anchor.Y)
|
||||
r = image.Rect(anchor.X-w, anchor.Y-h, anchor.X+w, anchor.Y+h)
|
||||
} else {
|
||||
r = image.Rect(c.Anchor.X, c.Anchor.Y, bounds.Max.X, bounds.Max.Y)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// computeSize retrieve the effective size of the cropped image.
|
||||
// It is defined by Height, Width, and Ratio option.
|
||||
func (c Config) computeSize(bounds image.Rectangle, ratio image.Point) (p image.Point) {
|
||||
if c.Options&Ratio == Ratio {
|
||||
// Ratio option is on, so we take the biggest size available that fit the given ratio.
|
||||
if float64(ratio.X)/float64(bounds.Dx()) > float64(ratio.Y)/float64(bounds.Dy()) {
|
||||
p = image.Point{bounds.Dx(), (bounds.Dx() / ratio.X) * ratio.Y}
|
||||
} else {
|
||||
p = image.Point{(bounds.Dy() / ratio.Y) * ratio.X, bounds.Dy()}
|
||||
}
|
||||
} else {
|
||||
p = image.Point{ratio.X, ratio.Y}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// computedCropArea retrieve the theorical crop area.
|
||||
// It is defined by Height, Width, Mode and
|
||||
func (c Config) computedCropArea(bounds image.Rectangle, size image.Point) (r image.Rectangle) {
|
||||
min := bounds.Min
|
||||
switch c.Mode {
|
||||
case Centered:
|
||||
rMin := c.centeredMin(bounds)
|
||||
r = image.Rect(rMin.X-size.X/2, rMin.Y-size.Y/2, rMin.X-size.X/2+size.X, rMin.Y-size.Y/2+size.Y)
|
||||
default: // TopLeft
|
||||
rMin := image.Point{min.X + c.Anchor.X, min.Y + c.Anchor.Y}
|
||||
r = image.Rect(rMin.X, rMin.Y, rMin.X+size.X, rMin.Y+size.Y)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (c *Config) centeredMin(bounds image.Rectangle) (rMin image.Point) {
|
||||
if c.Anchor.X == 0 && c.Anchor.Y == 0 {
|
||||
rMin = image.Point{
|
||||
X: bounds.Dx() / 2,
|
||||
Y: bounds.Dy() / 2,
|
||||
}
|
||||
} else {
|
||||
rMin = image.Point{
|
||||
X: c.Anchor.X,
|
||||
Y: c.Anchor.Y,
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func min(a, b int) (r int) {
|
||||
if a < b {
|
||||
r = a
|
||||
} else {
|
||||
r = b
|
||||
}
|
||||
return
|
||||
}
|
||||
|
|
@ -261,6 +261,8 @@ github.com/mschoch/smat
|
|||
github.com/msteinert/pam
|
||||
# github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
|
||||
github.com/nfnt/resize
|
||||
# github.com/oliamb/cutter v0.2.2
|
||||
github.com/oliamb/cutter
|
||||
# github.com/pelletier/go-buffruneio v0.2.0
|
||||
github.com/pelletier/go-buffruneio
|
||||
# github.com/philhofer/fwd v1.0.0
|
||||
|
|
|
|||
Loading…
Reference in New Issue