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path: root/go/images/resizing.go
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Diffstat (limited to 'go/images/resizing.go')
-rw-r--r--go/images/resizing.go21
1 files changed, 13 insertions, 8 deletions
diff --git a/go/images/resizing.go b/go/images/resizing.go
index 6e774e1db..7e21db70b 100644
--- a/go/images/resizing.go
+++ b/go/images/resizing.go
@@ -9,17 +9,22 @@ import (
"image/png"
)
-func Resized(ext string, data []byte, width, height int) (resized []byte) {
+func Resized(ext string, data []byte, width, height int) (resized []byte, w int, h int) {
if width == 0 && height == 0 {
- return data
+ return data, 0, 0
}
if srcImage, _, err := image.Decode(bytes.NewReader(data)); err == nil {
bounds := srcImage.Bounds()
var dstImage *image.NRGBA
- if width == height && bounds.Dx() != bounds.Dy() {
- dstImage = imaging.Thumbnail(srcImage, width, height, imaging.Lanczos)
- } else {
- dstImage = imaging.Resize(srcImage, width, height, imaging.Lanczos)
+ if bounds.Dx() > width && width != 0 || bounds.Dy() > height && height != 0 {
+ if width == height && bounds.Dx() != bounds.Dy() {
+ dstImage = imaging.Thumbnail(srcImage, width, height, imaging.Lanczos)
+ w, h = width, height
+ } else {
+ dstImage = imaging.Resize(srcImage, width, height, imaging.Lanczos)
+ }
+ }else{
+ return data, bounds.Dx(), bounds.Dy()
}
var buf bytes.Buffer
switch ext {
@@ -30,7 +35,7 @@ func Resized(ext string, data []byte, width, height int) (resized []byte) {
case ".gif":
gif.Encode(&buf, dstImage, nil)
}
- return buf.Bytes()
+ return buf.Bytes(), dstImage.Bounds().Dx(), dstImage.Bounds().Dy()
}
- return data
+ return data, 0, 0
}