| 77 | } |
| 78 | |
| 79 | func (f *uploadedFiles) createThumbnail(uf uploadedFile) { |
| 80 | file, err := os.Open(path.Join(f.dir, uf.Name)) |
| 81 | if err != nil { |
| 82 | return |
| 83 | } |
| 84 | defer file.Close() |
| 85 | |
| 86 | name := strings.ToLower(uf.Name) |
| 87 | |
| 88 | out, err := os.OpenFile(f.dir+"thumbnail_"+uf.Name, |
| 89 | os.O_WRONLY|os.O_CREATE, 0666) |
| 90 | if err != nil { |
| 91 | return |
| 92 | } |
| 93 | defer out.Close() |
| 94 | |
| 95 | if strings.HasSuffix(name, ".jpg") { |
| 96 | // decode jpeg into image.Image |
| 97 | img, err := jpeg.Decode(file) |
| 98 | if err != nil { |
| 99 | return |
| 100 | } |
| 101 | |
| 102 | // write new image to file |
| 103 | resized := resize.Thumbnail(180, 180, img, resize.Lanczos3) |
| 104 | jpeg.Encode(out, resized, |
| 105 | &jpeg.Options{Quality: jpeg.DefaultQuality}) |
| 106 | |
| 107 | } else if strings.HasSuffix(name, ".png") { |
| 108 | img, err := png.Decode(file) |
| 109 | if err != nil { |
| 110 | return |
| 111 | } |
| 112 | |
| 113 | // write new image to file |
| 114 | resized := resize.Thumbnail(180, 180, img, resize.Lanczos3) // slower but better res |
| 115 | png.Encode(out, resized) |
| 116 | } |
| 117 | // and so on... you got the point, this code can be simplify, as a practise. |
| 118 | } |
| 119 | |
| 120 | func main() { |
| 121 | app := iris.New() |