/
jsflow.go
53 lines (37 loc) · 1.09 KB
/
jsflow.go
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package render
import (
"fmt"
"strings"
"time"
)
var jsflowParams = map[string]string{
"scale": "1",
}
type jsflowRenderer struct {
}
func (j *jsflowRenderer) BlockDescriptor() string {
return "jsflow"
}
func (j *jsflowRenderer) HTMLHeaders() string {
return `
<script src="https://cdnjs.cloudflare.com/ajax/libs/flowchart/1.6.5/flowchart.min.js"></script>
`
}
func (j *jsflowRenderer) RenderToBuffer(data string, params string) (string, error) {
p := params2map(params, jsflowParams)
data = strings.Replace(data, "\n", "\\n", -1)
divID := fmt.Sprintf("div%v", time.Now().UnixNano())
div := `
<div id="` + divID + `"></div>
<script>
var diagram = flowchart.parse("` + data + `");
diagram.drawSVG('` + divID + `');
scale = ` + p["scale"] + `;
svgNode = $($("#` + divID + `").children()[0]);
svgNode.html("<g transform='scale("+scale+")'>"+svgNode.html()+"</g>");
svgNode.attr("height", svgNode.attr("height") * scale );
svgNode.attr("width", svgNode.attr("width") * scale );
</script>
`
return div, nil
}