internal/converter/converter.go

@@ -14,7 +14,6 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
-	"regexp"
 	"runtime"
 	"strings"
 	"time"
@@ -101,7 +100,6 @@ func (c *Converter) InitParse() {
 	c.AddSection("Config")
 	c.AddStringParam(&c.Options.Profile, "profile", c.Options.Profile, fmt.Sprintf("Profile to use: \n%s", c.Options.AvailableProfiles()))
 	c.AddIntParam(&c.Options.Quality, "quality", c.Options.Quality, "Quality of the image")
-	c.AddBoolParam(&c.Options.Grayscale, "grayscale", c.Options.Grayscale, "Grayscale image. Ideal for eInk devices.")
 	c.AddBoolParam(&c.Options.Crop, "crop", c.Options.Crop, "Crop images")
 	c.AddIntParam(&c.Options.CropRatioLeft, "crop-ratio-left", c.Options.CropRatioLeft, "Crop ratio left: ratio of pixels allow to be non blank while cutting on the left.")
 	c.AddIntParam(&c.Options.CropRatioUp, "crop-ratio-up", c.Options.CropRatioUp, "Crop ratio up: ratio of pixels allow to be non blank while cutting on the top.")
@@ -118,8 +116,6 @@ func (c *Converter) InitParse() {
 	c.AddIntParam(&c.Options.LimitMb, "limitmb", c.Options.LimitMb, "Limit size of the EPUB: Default nolimit (0), Minimum 20")
 	c.AddBoolParam(&c.Options.StripFirstDirectoryFromToc, "strip", c.Options.StripFirstDirectoryFromToc, "Strip first directory from the TOC if only 1")
 	c.AddIntParam(&c.Options.SortPathMode, "sort", c.Options.SortPathMode, "Sort path mode\n0 = alpha for path and file\n1 = alphanum for path and alpha for file\n2 = alphanum for path and file")
-	c.AddStringParam(&c.Options.ForegroundColor, "foreground-color", c.Options.ForegroundColor, "Foreground color in hexa format RGB. Black=000, White=FFF")
-	c.AddStringParam(&c.Options.BackgroundColor, "background-color", c.Options.BackgroundColor, "Background color in hexa format RGB. Black=000, White=FFF, Light Gray=DDD, Dark Gray=777")
 
 	c.AddSection("Default config")
 	c.AddBoolParam(&c.Options.Show, "show", false, "Show your default parameters")
@@ -297,16 +293,6 @@ func (c *Converter) Validate() error {
 		return errors.New("sort should be 0, 1 or 2")
 	}
 
-	// Color
-	colorRegex := regexp.MustCompile("^[0-9A-F]{3}$")
-	if !colorRegex.MatchString(c.Options.ForegroundColor) {
-		return errors.New("foreground color must have color format in hexa: [0-9A-F]{3}")
-	}
-
-	if !colorRegex.MatchString(c.Options.BackgroundColor) {
-		return errors.New("background color must have color format in hexa: [0-9A-F]{3}")
-	}
-
 	return nil
 }
 

internal/converter/options/converter_options.go

@@ -23,7 +23,6 @@ type Options struct {
 	// Config
 	Profile                    string `yaml:"profile"`
 	Quality                    int    `yaml:"quality"`
-	Grayscale                  bool   `yaml:"grayscale"`
 	Crop                       bool   `yaml:"crop"`
 	CropRatioLeft              int    `yaml:"crop_ratio_left"`
 	CropRatioUp                int    `yaml:"crop_ratio_up"`
@@ -40,8 +39,6 @@ type Options struct {
 	LimitMb                    int    `yaml:"limit_mb"`
 	StripFirstDirectoryFromToc bool   `yaml:"strip_first_directory_from_toc"`
 	SortPathMode               int    `yaml:"sort_path_mode"`
-	ForegroundColor            string `yaml:"foreground_color"`
-	BackgroundColor            string `yaml:"background_color"`
 
 	// Default Config
 	Show  bool `yaml:"-"`
@@ -65,7 +62,6 @@ func New() *Options {
 	return &Options{
 		Profile:                    "",
 		Quality:                    85,
-		Grayscale:                  true,
 		Crop:                       true,
 		CropRatioLeft:              1,
 		CropRatioUp:                1,
@@ -81,34 +77,32 @@ func New() *Options {
 		LimitMb:                    0,
 		StripFirstDirectoryFromToc: false,
 		SortPathMode:               1,
-		ForegroundColor:            "000",
-		BackgroundColor:            "FFF",
 		profiles:                   profiles.New(),
 	}
 }
 
 func (o *Options) Header() string {
-	return "Go Comic Converter\n\nOptions:"
+	return `Go Comic Converter
+
+Options:`
 }
 
 func (o *Options) String() string {
-	var b strings.Builder
-	b.WriteString(o.Header())
-	for _, v := range []struct {
-		K string
-		V any
-	}{
-		{"Input", o.Input},
-		{"Output", o.Output},
-		{"Author", o.Author},
-		{"Title", o.Title},
-		{"Workers", o.Workers},
-	} {
-		b.WriteString(fmt.Sprintf("\n    %-26s: %v", v.K, v.V))
-	}
-	b.WriteString(o.ShowConfig())
-	b.WriteRune('\n')
-	return b.String()
+	return fmt.Sprintf(`%s
+    Input                     : %s
+    Output                    : %s
+    Author                    : %s
+    Title                     : %s
+    Workers                   : %d%s
+`,
+		o.Header(),
+		o.Input,
+		o.Output,
+		o.Author,
+		o.Title,
+		o.Workers,
+		o.ShowConfig(),
+	)
 }
 
 // Config file: ~/.go-comic-converter.yaml
@@ -167,34 +161,40 @@ func (o *Options) ShowConfig() string {
 		sortpathmode = "path=alphanum, file=alphanum"
 	}
 
-	var b strings.Builder
-	for _, v := range []struct {
-		K string
-		V any
-	}{
-		{"Profile", profileDesc},
-		{"ViewRatio", fmt.Sprintf("1:%s", strings.TrimRight(fmt.Sprintf("%f", profiles.PerfectRatio), "0"))},
-		{"View", viewDesc},
-		{"Quality", o.Quality},
-		{"Grayscale", o.Grayscale},
-		{"Crop", o.Crop},
-		{"CropRatio", fmt.Sprintf("%d Left - %d Up - %d Right - %d Bottom", o.CropRatioLeft, o.CropRatioUp, o.CropRatioRight, o.CropRatioBottom)},
-		{"Brightness", o.Brightness},
-		{"Contrast", o.Contrast},
-		{"AutoRotate", o.AutoRotate},
-		{"AutoSplitDoublePage", o.AutoSplitDoublePage},
-		{"NoBlankImage", o.NoBlankImage},
-		{"Manga", o.Manga},
-		{"HasCover", o.HasCover},
-		{"LimitMb", limitmb},
-		{"StripFirstDirectoryFromToc", o.StripFirstDirectoryFromToc},
-		{"SortPathMode", sortpathmode},
-		{"Foreground Color", fmt.Sprintf("#%s", o.ForegroundColor)},
-		{"Background Color", fmt.Sprintf("#%s", o.BackgroundColor)},
-	} {
-		b.WriteString(fmt.Sprintf("\n    %-26s: %v", v.K, v.V))
-	}
-	return b.String()
+	return fmt.Sprintf(`
+    Profile                   : %s
+    ViewRatio                 : 1:%s
+    View                      : %s
+    Quality                   : %d
+    Crop                      : %v
+    CropRatio                 : %d Left - %d Up - %d Right - %d Bottom
+    Brightness                : %d
+    Contrast                  : %d
+    AutoRotate                : %v
+    AutoSplitDoublePage       : %v
+    NoBlankImage              : %v
+    Manga                     : %v
+    HasCover                  : %v
+    LimitMb                   : %s
+    StripFirstDirectoryFromToc: %v
+    SortPathMode              : %s`,
+		profileDesc,
+		strings.TrimRight(fmt.Sprintf("%f", profiles.PerfectRatio), "0"),
+		viewDesc,
+		o.Quality,
+		o.Crop,
+		o.CropRatioLeft, o.CropRatioUp, o.CropRatioRight, o.CropRatioBottom,
+		o.Brightness,
+		o.Contrast,
+		o.AutoRotate,
+		o.AutoSplitDoublePage,
+		o.NoBlankImage,
+		o.Manga,
+		o.HasCover,
+		limitmb,
+		o.StripFirstDirectoryFromToc,
+		sortpathmode,
+	)
 }
 
 // reset all settings to default value

internal/converter/profiles/converter_profiles.go

@@ -16,7 +16,7 @@ type Profile struct {
 }
 
 // Recommended ratio of image for perfect rendering Portrait or Landscape.
-const PerfectRatio = 1.6
+const PerfectRatio = 1.5
 
 // Compute best dimension based on device size
 func (p Profile) PerfectDim() (int, int) {
@@ -60,8 +60,6 @@ func New() Profiles {
 		{"KoF", "Kobo Forma", 1440, 1920},
 		{"KoS", "Kobo Sage", 1440, 1920},
 		{"KoE", "Kobo Elipsa", 1404, 1872},
-		// High Resolution for Tablette
-		{"HR", "High Resolution", 2400, 3840},
 	}
 }
 

internal/epub/epub.go

@@ -77,7 +77,7 @@ func (e *ePub) writeImage(wz *epubzip.EPUBZip, img *epubimage.Image, zipImg *zip
 			"Title":      fmt.Sprintf("Image %d Part %d", img.Id, img.Part),
 			"ViewPort":   fmt.Sprintf("width=%d,height=%d", e.Image.View.Width, e.Image.View.Height),
 			"ImagePath":  img.ImgPath(),
-			"ImageStyle": img.ImgStyle(e.Image.View.Width, e.Image.View.Height, ""),
+			"ImageStyle": img.ImgStyle(e.Image.View.Width, e.Image.View.Height, e.Image.Manga),
 		})),
 	)
 	if err == nil {
@@ -251,10 +251,6 @@ func (e *ePub) Write() error {
 		if totalParts > 1 {
 			title = fmt.Sprintf("%s [%d/%d]", title, i+1, totalParts)
 		}
-		titleAlign := "left:0"
-		if e.Image.Manga {
-			titleAlign = "right:0"
-		}
 
 		content := []zipContent{
 			{"META-INF/container.xml", epubtemplates.Container},
@@ -273,7 +269,8 @@ func (e *ePub) Write() error {
 			})},
 			{"OEBPS/toc.xhtml", epubtemplates.Toc(title, e.StripFirstDirectoryFromToc, part.Images)},
 			{"OEBPS/Text/style.css", e.render(epubtemplates.Style, map[string]any{
-				"View": e.Image.View,
+				"PageWidth":  e.Image.View.Width,
+				"PageHeight": e.Image.View.Height,
 			})},
 			{"OEBPS/Text/space_title.xhtml", e.render(epubtemplates.Blank, map[string]any{
 				"Title":    "Blank Page Title",
@@ -283,7 +280,7 @@ func (e *ePub) Write() error {
 				"Title":      title,
 				"ViewPort":   fmt.Sprintf("width=%d,height=%d", e.Image.View.Width, e.Image.View.Height),
 				"ImagePath":  "Images/title.jpg",
-				"ImageStyle": part.Cover.ImgStyle(e.Image.View.Width, e.Image.View.Height, titleAlign),
+				"ImageStyle": part.Cover.ImgStyle(e.Image.View.Width, e.Image.View.Height, e.Image.Manga),
 			})},
 		}
 

internal/epub/image/epub_image.go

@@ -19,7 +19,6 @@ type Image struct {
 	DoublePage bool
 	Path       string
 	Name       string
-	Position   string
 }
 
 // key name of the blank plage after the image
@@ -71,17 +70,24 @@ func (i *Image) EPUBImgPath() string {
 //
 // center by default.
 // align to left or right if it's part of the splitted double page.
-func (i *Image) ImgStyle(viewWidth, viewHeight int, align string) string {
+func (i *Image) ImgStyle(viewWidth, viewHeight int, manga bool) string {
 	marginW, marginH := float64(viewWidth-i.Width)/2, float64(viewHeight-i.Height)/2
-
-	if align == "" {
-		switch i.Position {
-		case "rendition:page-spread-left":
-			align = "right:0"
-		case "rendition:page-spread-right":
+	left, top := marginW*100/float64(viewWidth), marginH*100/float64(viewHeight)
+	var align string
+	switch i.Part {
+	case 0:
+		align = fmt.Sprintf("left:%.2f%%", left)
+	case 1:
+		if manga {
+			align = "left:0"
+		} else {
+			align = "right:0"
+		}
+	case 2:
+		if manga {
+			align = "right:0"
+		} else {
 			align = "left:0"
-		default:
-			align = fmt.Sprintf("left:%.2f%%", marginW*100/float64(viewWidth))
 		}
 	}
 
@@ -89,7 +95,7 @@ func (i *Image) ImgStyle(viewWidth, viewHeight int, align string) string {
 		"width:%dpx; height:%dpx; top:%.2f%%; %s;",
 		i.Width,
 		i.Height,
-		marginH*100/float64(viewHeight),
+		top,
 		align,
 	)
 }

internal/epub/imageprocessor/epub_image_processor.go

@@ -6,7 +6,6 @@ package epubimageprocessor
 import (
 	"fmt"
 	"image"
-	"image/draw"
 	"os"
 	"sync"
 
@@ -127,37 +126,6 @@ func (e *EPUBImageProcessor) Load() (images []*epubimage.Image, err error) {
 	return images, nil
 }
 
-func (e *EPUBImageProcessor) createImage(src image.Image, r image.Rectangle) draw.Image {
-	if e.Options.Image.GrayScale {
-		return image.NewGray(r)
-	}
-
-	switch t := src.(type) {
-	case *image.Gray:
-		return image.NewGray(r)
-	case *image.Gray16:
-		return image.NewGray16(r)
-	case *image.RGBA:
-		return image.NewRGBA(r)
-	case *image.RGBA64:
-		return image.NewRGBA64(r)
-	case *image.NRGBA:
-		return image.NewNRGBA(r)
-	case *image.NRGBA64:
-		return image.NewNRGBA64(r)
-	case *image.Alpha:
-		return image.NewAlpha(r)
-	case *image.Alpha16:
-		return image.NewAlpha16(r)
-	case *image.CMYK:
-		return image.NewCMYK(r)
-	case *image.Paletted:
-		return image.NewPaletted(r, t.Palette)
-	default:
-		return image.NewNRGBA64(r)
-	}
-}
-
 // transform image into 1 or 3 images
 // only doublepage with autosplit has 3 versions
 func (e *EPUBImageProcessor) transformImage(src image.Image, srcId int) []image.Image {
@@ -209,7 +177,7 @@ func (e *EPUBImageProcessor) transformImage(src image.Image, srcId int) []image.
 	// convert
 	{
 		g := gift.New(filters...)
-		dst := e.createImage(src, g.Bounds(src.Bounds()))
+		dst := image.NewGray(g.Bounds(src.Bounds()))
 		g.Draw(dst, src)
 		images = append(images, dst)
 	}
@@ -236,7 +204,7 @@ func (e *EPUBImageProcessor) transformImage(src image.Image, srcId int) []image.
 			epubimagefilters.CropSplitDoublePage(b),
 			epubimagefilters.Resize(e.Image.View.Width, e.Image.View.Height, gift.LanczosResampling),
 		)
-		dst := e.createImage(src, g.Bounds(src.Bounds()))
+		dst := image.NewGray(g.Bounds(src.Bounds()))
 		g.Draw(dst, src)
 		images = append(images, dst)
 	}
@@ -245,11 +213,11 @@ func (e *EPUBImageProcessor) transformImage(src image.Image, srcId int) []image.
 }
 
 // create a title page with the cover
-func (e *EPUBImageProcessor) CoverTitleData(src image.Image, title string) (*epubzip.ZipImage, error) {
+func (e *EPUBImageProcessor) CoverTitleData(img image.Image, title string) (*epubzip.ZipImage, error) {
 	// Create a blur version of the cover
 	g := gift.New(epubimagefilters.CoverTitle(title))
-	dst := e.createImage(src, g.Bounds(src.Bounds()))
-	g.Draw(dst, src)
+	dst := image.NewGray(g.Bounds(img.Bounds()))
+	g.Draw(dst, img)
 
 	return epubzip.CompressImage("OEBPS/Images/title.jpg", dst, e.Image.Quality)
 }

internal/epub/options/epub_options.go

@@ -10,13 +10,8 @@ type Crop struct {
 	Left, Up, Right, Bottom int
 }
 
-type Color struct {
-	Foreground, Background string
-}
-
 type View struct {
 	Width, Height int
-	Color         Color
 }
 
 type Image struct {
@@ -30,7 +25,6 @@ type Image struct {
 	Manga               bool
 	HasCover            bool
 	View                *View
-	GrayScale           bool
 }
 
 type Options struct {

internal/epub/templates/epub_templates_content.go

@@ -195,11 +195,9 @@ func getSpine(o *ContentOptions) []tag {
 				"",
 			})
 		}
-		// register position for style adjustment
-		img.Position = getSpread(img.DoublePage)
 		spine = append(spine, tag{
 			"itemref",
-			tagAttrs{"idref": img.PageKey(), "properties": img.Position},
+			tagAttrs{"idref": img.PageKey(), "properties": getSpread(img.DoublePage)},
 			"",
 		})
 	}

internal/epub/templates/epub_templates_style.css.tmpl

@@ -1,12 +1,12 @@
 body {
-    color: #{{ .View.Color.Foreground }};
-    background: #{{ .View.Color.Background }};
+    color: #000;
+    background: #FFF;
     top: 0;
     left: 0;
     margin: 0;
     padding: 0;
-    width: {{ .View.Width }}px;
-    height: {{ .View.Height }}px;
+    width: {{ .PageWidth }}px;
+    height: {{ .PageHeight }}px;
     text-align: center;
 }
 

main.go

@@ -114,8 +114,6 @@ $ go install github.com/celogeek/go-comic-converter/v%d@%s
 		DryVerbose:                 cmd.Options.DryVerbose,
 		Quiet:                      cmd.Options.Quiet,
 		Image: &epuboptions.Image{
-			Quality:   cmd.Options.Quality,
-			GrayScale: cmd.Options.Grayscale,
 			Crop: &epuboptions.Crop{
 				Enabled: cmd.Options.Crop,
 				Left:    cmd.Options.CropRatioLeft,
@@ -123,6 +121,7 @@ $ go install github.com/celogeek/go-comic-converter/v%d@%s
 				Right:   cmd.Options.CropRatioRight,
 				Bottom:  cmd.Options.CropRatioBottom,
 			},
+			Quality:             cmd.Options.Quality,
 			Brightness:          cmd.Options.Brightness,
 			Contrast:            cmd.Options.Contrast,
 			AutoRotate:          cmd.Options.AutoRotate,
@@ -133,10 +132,6 @@ $ go install github.com/celogeek/go-comic-converter/v%d@%s
 			View: &epuboptions.View{
 				Width:  perfectWidth,
 				Height: perfectHeight,
-				Color: epuboptions.Color{
-					Foreground: cmd.Options.ForegroundColor,
-					Background: cmd.Options.BackgroundColor,
-				},
 			},
 		},
 	}).Write(); err != nil {