CapDec provides a simple API and CLI for captioning pictures.
-
go get github.com/gusanmaz/capdec -
cd ${GOPATH}/src/github.com/gusanmaz/capdec -
go install cmd/capdec/capdec.go
CapDec module currently offers only one function: caption
This function's simple usage could be checked from main/main.go or below
dest := "bird_captioned.png"
captions := make([]string, 2)
captions[0] = "Blue-footed bird."
captions[1] = "What a fancy bird!"
codes := make([]string, 2)
codes[0] = `document.querySelector('figure').style.borderWidth = "10px"`
codes[1] = `document.querySelector('figure').style.borderColor = "blue" ;`
err := capdec.Caption("bird.jpeg", captions, dest, codes)
if err != nil{
log.Fatal("Terminating because of an error. Error: " + err.Error())
}else{
fmt.Printf("Captioned image successfully saved at %v\n",dest)
}Caption function allows customizing default style of caption and picture border with utilization of codes array.
Every element of codes array should be valid Javascript statement that could change default styling of the template file of tempplate/template.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CapDec Page</title>
<style>
figcaption{
font-size: 20px;
background-color: lightgoldenrodyellow;
padding:10px;
color:black;
}
figcaption:nth-child(2){
color:mediumblue;
}
figure{
width:100%;
height: 100%;
max-width: min-content;
max-height: min-content;
padding: 0;
margin:0;
border-color:red;
border-width: 0px;
border-style: solid;
}
</style>
</head>
<body>
<figure id="figure">
<img id="img" src="{{.ImgBase64}}" alt="Alt Text">
{{range .Captions}}
<figcaption>{{.}}</figcaption>
{{end}}
</figure>
</body>
</html>capdec -s in.jpeg -d out.png "cap:quick fox jumps" "cap:over the lazy dog" "js:document.querySelector('figcaption').style.color = 'red'"
- Arguments for caption text and codes should be typed after flags.
- Prefix caption arguments with
cap - Prefix code argument with
js
Güvenç Usanmaz
MIT License