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status-go
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Improved Resize() and added tests

This commit is contained in:
Samuel Hawksby-Robinson 2020-10-09 21:42:26 +01:00 committed by Andrea Maria Piana
parent a6df8adeba
commit 9bc240fc71
2 changed files with 100 additions and 5 deletions
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13
images/manipulation.go
View File

@ -8,7 +8,18 @@ import (
"github.com/oliamb/cutter"
)
func Resize(width, height uint, img image.Image) image.Image {
func Resize(size uint, img image.Image) image.Image {
var width, height uint
switch{
case img.Bounds().Max.X == img.Bounds().Max.Y:
width, height = size, size
case img.Bounds().Max.X > img.Bounds().Max.Y:
width, height = 0, size
default:
width, height = size, 0
}
return resize.Resize(width, height, img, resize.Bilinear)
}

92
images/manipulation_test.go
View File

@ -10,7 +10,91 @@ import (
)
func TestResize(t *testing.T) {
sizes := []uint{80, 240, 1000}
cs := []struct{
Filename string
Bounds map[uint]image.Rectangle
}{
{
"elephant.jpg",
map[uint]image.Rectangle{
80: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 80, Y: 80},
},
240: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 240, Y: 240},
},
1000: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 1000, Y: 1000},
},
},
},
{
"rose.webp",
map[uint]image.Rectangle{
80: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 107, Y: 80},
},
240: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 319, Y: 240},
},
1000: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 1329, Y: 1000},
},
},
},
{
"spin.gif",
map[uint]image.Rectangle{
80: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 80, Y: 80},
},
240: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 240, Y: 240},
},
1000: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 1000, Y: 1000},
},
},
},
{
"status.png",
map[uint]image.Rectangle{
80: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 80, Y: 80},
},
240: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 240, Y: 240},
},
1000: {
Min: image.Point{X: 0, Y: 0},
Max: image.Point{X: 1000, Y: 1000},
},
},
},
}
for _, c := range cs {
img, err := Decode(path + c.Filename)
require.NoError(t, err)
for _, s := range sizes {
rsImg := Resize(s, img)
require.Exactly(t, c.Bounds[s], rsImg.Bounds())
}
}
}
func TestCrop(t *testing.T) {
@ -39,7 +123,7 @@ func TestCrop(t *testing.T) {
}
cs := []struct{
FileName string
Filename string
Params []params
}{
{
@ -77,7 +161,7 @@ func TestCrop(t *testing.T) {
}
for _, c := range cs {
img, err := Decode(path + c.FileName)
img, err := Decode(path + c.Filename)
require.NoError(t, err)
for _, p := range c.Params {
@ -88,8 +172,8 @@ func TestCrop(t *testing.T) {
} else {
require.NoError(t, err)
}
require.Exactly(t, p.OutputBound.Dx(), cImg.Bounds().Dx(), c.FileName)
require.Exactly(t, p.OutputBound.Dy(), cImg.Bounds().Dy(), c.FileName)
require.Exactly(t, p.OutputBound.Dx(), cImg.Bounds().Dx(), c.Filename)
require.Exactly(t, p.OutputBound.Dy(), cImg.Bounds().Dy(), c.Filename)
bb := bytes.NewBuffer([]byte{})
err = Encode(bb, cImg, options)