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feat(crop): add method shortcuts for crop

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This commit is contained in:
Tomas Aparicio 2015-04-27 11:49:15 +02:00
parent 6d27b8ef91
commit c9001cd22c
2 changed files with 53 additions and 3 deletions
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24
image.go
View file

@ -14,6 +14,17 @@ func (i *Image) Resize(width, height int) ([]byte, error) {
return i.Process(options) return i.Process(options)
} }
// Resize the image to fixed width and height with additional crop transformation
func (i *Image) ResizeAndCrop(width, height int) ([]byte, error) {
options := Options{
Width: width,
Height: height,
Embed: true,
Crop: true,
}
return i.Process(options)
}
// Extract area from the by X/Y axis // Extract area from the by X/Y axis
func (i *Image) Extract(top, left, width, height int) ([]byte, error) { func (i *Image) Extract(top, left, width, height int) ([]byte, error) {
options := Options{ options := Options{
@ -25,7 +36,7 @@ func (i *Image) Extract(top, left, width, height int) ([]byte, error) {
return i.Process(options) return i.Process(options)
} }
// Enlarge the image from the by X/Y axis // Enlarge the image by width and height. Aspect ratio is maintained
func (i *Image) Enlarge(width, height int) ([]byte, error) { func (i *Image) Enlarge(width, height int) ([]byte, error) {
options := Options{ options := Options{
Width: width, Width: width,
@ -35,6 +46,17 @@ func (i *Image) Enlarge(width, height int) ([]byte, error) {
return i.Process(options) return i.Process(options)
} }
// Enlarge the image by width and height with additional crop transformation
func (i *Image) EnlargeAndCrop(width, height int) ([]byte, error) {
options := Options{
Width: width,
Height: height,
Enlarge: true,
Crop: true,
}
return i.Process(options)
}
// Crop the image to the exact size specified // Crop the image to the exact size specified
func (i *Image) Crop(width, height int, gravity Gravity) ([]byte, error) { func (i *Image) Crop(width, height int, gravity Gravity) ([]byte, error) {
options := Options{ options := Options{

32
image_test.go
View file

@ -20,13 +20,27 @@ func TestImageResize(t *testing.T) {
Write("fixtures/test_resize_out.jpg", buf) Write("fixtures/test_resize_out.jpg", buf)
} }
func TestImageResizeAndCrop(t *testing.T) {
buf, err := initImage("test.jpg").ResizeAndCrop(300, 200)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 300, 200)
if err != nil {
t.Error(err)
}
Write("fixtures/test_resize_crop_out.jpg", buf)
}
func TestImageExtract(t *testing.T) { func TestImageExtract(t *testing.T) {
buf, err := initImage("test.jpg").Extract(100, 100, 300, 300) buf, err := initImage("test.jpg").Extract(100, 100, 300, 200)
if err != nil { if err != nil {
t.Errorf("Cannot process the image: %s", err) t.Errorf("Cannot process the image: %s", err)
} }
err = assertSize(buf, 300, 300) err = assertSize(buf, 300, 200)
if err != nil { if err != nil {
t.Error(err) t.Error(err)
} }
@ -48,6 +62,20 @@ func TestImageEnlarge(t *testing.T) {
Write("fixtures/test_enlarge_out.jpg", buf) Write("fixtures/test_enlarge_out.jpg", buf)
} }
func TestImageEnlargeAndCrop(t *testing.T) {
buf, err := initImage("test.png").EnlargeAndCrop(800, 480)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 800, 480)
if err != nil {
t.Error(err)
}
Write("fixtures/test_enlarge_crop_out.jpg", buf)
}
func TestImageCrop(t *testing.T) { func TestImageCrop(t *testing.T) {
buf, err := initImage("test.jpg").Crop(800, 600, NORTH) buf, err := initImage("test.jpg").Crop(800, 600, NORTH)
if err != nil { if err != nil {