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// Copyright 2019 Nick White.
// Use of this source code is governed by the GPLv3
// license that can be found in the LICENSE file.
// line contains various functions to manipulate ocr lines
package line
import (
"image"
"image/png"
"io"
"os"
)
type Detail struct {
Name string
Avgconf float64
Img CopyableImg
Text string
OcrName string
}
type CopyableImg interface {
CopyLineTo(io.Writer) error
}
type Details []Detail
func (l Details) Len() int { return len(l) }
func (l Details) Less(i, j int) bool { return l[i].Avgconf < l[j].Avgconf }
func (l Details) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
// This is an implementation of the CopyableImg interface that
// stores the image directly as an image.Image
type ImgDirect struct {
Img image.Image
}
func (i ImgDirect) CopyLineTo(w io.Writer) error {
err := png.Encode(w, i.Img)
if err != nil {
return err
}
return nil
}
// This is an implementation of the CopyableImg interface that
// stores the path of an image
type ImgPath struct {
Path string
}
func (i ImgPath) CopyLineTo(w io.Writer) error {
f, err := os.Open(i.Path)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(w, f)
return err
}
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