/*
blurImage: blur the image and save it
*/
func blurImage(inFilename string, outFilename string, factor float64, format imaging.Format) {
//
// print a message about what we are converting
//
fmt.Println("\t\t", inFilename, "=>", outFilename, "using factor", factor)
//
// Open the file and read in the image
//
infile, err := os.Open(inFilename)
errorCheck(err)
defer infile.Close()
//
// load in the actual image data (decode image) and work out the new dimensions
//
srcImage, _, err := image.Decode(infile)
errorCheck(err)
//
// blue the image...
//
blurredImage := imaging.Blur(srcImage, factor)
//
// save the new image
//
outfile, err := os.Create(outFilename)
errorCheck(err)
defer outfile.Close()
imaging.Encode(outfile, blurredImage, format)
// png.Encode(outfile, blurredImage)
}
func main() {
app := cli.NewApp()
app.Author = "zujko"
app.Name = "img-go"
app.Usage = "INSERT USAGE HERE"
app.Commands = []cli.Command{
{
Name: "resize",
Aliases: []string{"r"},
Usage: "Resizes the image",
Action: func(c *cli.Context) {
if len(c.Args()) >= 2 {
img, err := imaging.Open(c.Args()[0])
if err != nil {
color.Red("Error opening image")
} else {
size := strings.Split(c.Args()[1], "x")
width, we := strconv.Atoi(size[0])
height, he := strconv.Atoi(size[1])
if we != nil || he != nil {
color.Red("Invalid dimension arguments")
return
}
if width > 1000 || height > 1000 {
color.Red("Dimensions are too large")
return
}
resized := imaging.Thumbnail(img, width, height, imaging.CatmullRom)
resizeName := "resized.jpg"
if len(c.Args()) == 3 {
resizeName = c.Args()[2]
}
err := imaging.Save(resized, resizeName)
if err != nil {
color.Red("Error saving image")
} else {
color.Green("Image resized")
}
}
} else {
fmt.Println("usage: image_name size [output_name]")
}
},
},
{
Name: "blur",
Aliases: []string{"bl"},
Usage: "Adds a blur to the image",
Action: func(c *cli.Context) {
if len(c.Args()) < 2 {
fmt.Println("usage: image_name blur_amount [output_name]")
} else {
img, err := imaging.Open(c.Args()[0])
if err != nil {
color.Red("Error opening Image")
return
}
blurAmt, er := strconv.ParseFloat(c.Args()[1], 64)
if er != nil {
color.Red("Invalid arguments")
return
}
dstImage := imaging.Blur(img, blurAmt)
imgName := "blur.jpg"
if len(c.Args()) == 3 {
imgName = c.Args()[2]
}
saveErr := imaging.Save(dstImage, imgName)
if saveErr != nil {
color.Red("Error saving image")
} else {
color.Green("Image blurred")
}
}
},
},
{
Name: "brighten",
Aliases: []string{"br"},
Usage: "Brighten or darken the image",
Action: func(c *cli.Context) {
//BRIGHTEN IMAGE
},
},
}
app.Run(os.Args)
}
