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move create title

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This commit is contained in:
Celogeek 2023-04-22 21:16:51 +02:00
parent aae62f62c3
commit 42c58c733b
Signed by: celogeek
SSH Key Fingerprint: SHA256:njNJLzoLQdbV9PC6ehcruRb0QnEgxABoCYZ+0+aUIYc
2 changed files with 66 additions and 68 deletions
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69
internal/epub/epub.go
View File

@ -2,8 +2,6 @@ package epub
import (
"fmt"
"image"
"image/draw"
"os"
"path/filepath"
"regexp"
@ -12,12 +10,7 @@ import (
"text/template"
"time"
"github.com/disintegration/gift"
"github.com/gofrs/uuid"
"github.com/golang/freetype"
"github.com/golang/freetype/truetype"
"golang.org/x/image/font"
"golang.org/x/image/font/gofont/gomonobold"
)
type ImageOptions struct {
@ -129,66 +122,6 @@ func (e *ePub) writeBlank(wz *epubZip, img *Image) error {
)
}
func (e ePub) getTitleImageData(title string, img *Image, currentPart, totalPart int) *ImageData {
// Create a blur version of the cover
g := gift.New(gift.GaussianBlur(8))
dst := image.NewGray(g.Bounds(img.Raw.Bounds()))
g.Draw(dst, img.Raw)
// Calculate size of title
f, _ := truetype.Parse(gomonobold.TTF)
borderSize := 4
var fontSize, textWidth, textHeight int
for fontSize = 64; fontSize >= 12; fontSize -= 1 {
face := truetype.NewFace(f, &truetype.Options{Size: float64(fontSize), DPI: 72})
textWidth = font.MeasureString(face, title).Ceil()
textHeight = face.Metrics().Ascent.Ceil() + face.Metrics().Descent.Ceil()
if textWidth+2*borderSize < img.Width && 3*textHeight+2*borderSize < img.Height {
break
}
}
// Draw rectangle in the middle of the image
textPosStart := img.Height/2 - textHeight/2
textPosEnd := img.Height/2 + textHeight/2
marginSize := fontSize
borderArea := image.Rect(0, textPosStart-borderSize-marginSize, img.Width, textPosEnd+borderSize+marginSize)
textArea := image.Rect(borderSize, textPosStart-marginSize, img.Width-borderSize, textPosEnd+marginSize)
draw.Draw(
dst,
borderArea,
image.Black,
image.Point{},
draw.Over,
)
draw.Draw(
dst,
textArea,
image.White,
image.Point{},
draw.Over,
)
// Draw text
c := freetype.NewContext()
c.SetDPI(72)
c.SetFontSize(float64(fontSize))
c.SetFont(f)
c.SetClip(textArea)
c.SetDst(dst)
c.SetSrc(image.Black)
textLeft := img.Width/2 - textWidth/2
if textLeft < borderSize {
textLeft = borderSize
}
c.DrawString(title, freetype.Pt(textLeft, img.Height/2+textHeight/4))
return newData("OEBPS/Images/title.jpg", dst, e.Quality)
}
func (e *ePub) getParts() ([]*epubPart, error) {
images, err := e.LoadImages()
@ -332,7 +265,7 @@ func (e *ePub) Write() error {
return err
}
}
if err := wz.WriteImage(e.getTitleImageData(title, part.Cover, i+1, totalParts)); err != nil {
if err := wz.WriteImage(e.createTitleImageDate(title, part.Cover, i+1, totalParts)); err != nil {
return err
}

65
internal/epub/epub_image_processing.go
View File

@ -6,6 +6,7 @@ import (
"fmt"
"image"
"image/color"
"image/draw"
_ "image/jpeg"
_ "image/png"
"io"
@ -18,9 +19,13 @@ import (
"github.com/celogeek/go-comic-converter/v2/internal/epub/sortpath"
"github.com/disintegration/gift"
"github.com/golang/freetype"
"github.com/golang/freetype/truetype"
"github.com/nwaples/rardecode"
pdfimage "github.com/raff/pdfreader/image"
"github.com/raff/pdfreader/pdfread"
"golang.org/x/image/font"
"golang.org/x/image/font/gofont/gomonobold"
"golang.org/x/image/tiff"
_ "golang.org/x/image/webp"
)
@ -513,3 +518,63 @@ func loadPdf(input string) (int, chan *imageTask, error) {
return nbPages, output, nil
}
func (e *ePub) createTitleImageDate(title string, img *Image, currentPart, totalPart int) *ImageData {
// Create a blur version of the cover
g := gift.New(gift.GaussianBlur(8))
dst := image.NewGray(g.Bounds(img.Raw.Bounds()))
g.Draw(dst, img.Raw)
// Calculate size of title
f, _ := truetype.Parse(gomonobold.TTF)
borderSize := 4
var fontSize, textWidth, textHeight int
for fontSize = 64; fontSize >= 12; fontSize -= 1 {
face := truetype.NewFace(f, &truetype.Options{Size: float64(fontSize), DPI: 72})
textWidth = font.MeasureString(face, title).Ceil()
textHeight = face.Metrics().Ascent.Ceil() + face.Metrics().Descent.Ceil()
if textWidth+2*borderSize < img.Width && 3*textHeight+2*borderSize < img.Height {
break
}
}
// Draw rectangle in the middle of the image
textPosStart := img.Height/2 - textHeight/2
textPosEnd := img.Height/2 + textHeight/2
marginSize := fontSize
borderArea := image.Rect(0, textPosStart-borderSize-marginSize, img.Width, textPosEnd+borderSize+marginSize)
textArea := image.Rect(borderSize, textPosStart-marginSize, img.Width-borderSize, textPosEnd+marginSize)
draw.Draw(
dst,
borderArea,
image.Black,
image.Point{},
draw.Over,
)
draw.Draw(
dst,
textArea,
image.White,
image.Point{},
draw.Over,
)
// Draw text
c := freetype.NewContext()
c.SetDPI(72)
c.SetFontSize(float64(fontSize))
c.SetFont(f)
c.SetClip(textArea)
c.SetDst(dst)
c.SetSrc(image.Black)
textLeft := img.Width/2 - textWidth/2
if textLeft < borderSize {
textLeft = borderSize
}
c.DrawString(title, freetype.Pt(textLeft, img.Height/2+textHeight/4))
return newData("OEBPS/Images/title.jpg", dst, e.Quality)
}