celogeek/go-comic-converter
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use percentage for cropping

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Celogeek 2024-04-28 17:40:37 +02:00
parent c75c58dede
commit 9133493e60
Signed by: celogeek
SSH Key Fingerprint: SHA256:njNJLzoLQdbV9PC6ehcruRb0QnEgxABoCYZ+0+aUIYc
3 changed files with 8 additions and 6 deletions
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2
internal/converter/converter.go
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@ -113,7 +113,7 @@ func (c *Converter) InitParse() {
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.")
c.AddIntParam(&c.Options.CropRatioRight, "crop-ratio-right", c.Options.CropRatioRight, "Crop ratio right: ratio of pixels allow to be non blank while cutting on the right.")
c.AddIntParam(&c.Options.CropRatioBottom, "crop-ratio-bottom", c.Options.CropRatioBottom, "Crop ratio bottom: ratio of pixels allow to be non blank while cutting on the bottom.")
c.AddIntParam(&c.Options.CropLimit, "crop-limit", c.Options.CropLimit, "Crop limit: maximum number of pixel to crop on all side. 0 mean unlimited.")
c.AddIntParam(&c.Options.CropLimit, "crop-limit", c.Options.CropLimit, "Crop limit: maximum number of cropping in percentage allowed. 0 mean unlimited.")
c.AddIntParam(&c.Options.Brightness, "brightness", c.Options.Brightness, "Brightness readjustment: between -100 and 100, > 0 lighter, < 0 darker")
c.AddIntParam(&c.Options.Contrast, "contrast", c.Options.Contrast, "Contrast readjustment: between -100 and 100, > 0 more contrast, < 0 less contrast")
c.AddBoolParam(&c.Options.AutoContrast, "autocontrast", c.Options.AutoContrast, "Improve contrast automatically")

2
internal/converter/options/converter_options.go
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@ -268,7 +268,7 @@ func (o *Options) ShowConfig() string {
{"Grayscale", o.Grayscale, true},
{"Grayscale mode", grayscaleMode, o.Grayscale},
{"Crop", o.Crop, true},
{"Crop ratio", fmt.Sprintf("%d Left - %d Up - %d Right - %d Bottom - %d Limit", o.CropRatioLeft, o.CropRatioUp, o.CropRatioRight, o.CropRatioBottom, o.CropLimit), o.Crop},
{"Crop ratio", fmt.Sprintf("%d Left - %d Up - %d Right - %d Bottom - %d%% Limit", o.CropRatioLeft, o.CropRatioUp, o.CropRatioRight, o.CropRatioBottom, o.CropLimit), o.Crop},
{"Brightness", o.Brightness, o.Brightness != 0},
{"Contrast", o.Contrast, o.Contrast != 0},
{"Auto contrast", o.AutoContrast, true},

10
internal/epub/imagefilters/epub_image_filters_autocrop.go
View File

@ -28,8 +28,10 @@ type cutRatioOptions struct {
func findMargin(img image.Image, bounds image.Rectangle, cutRatio cutRatioOptions, limit int) image.Rectangle {
imgArea := bounds
maxCutX, maxCutY := imgArea.Dx()*limit/100, imgArea.Dy()*limit/100
LEFT:
for x, maxCut := imgArea.Min.X, limit; x < imgArea.Max.X && (limit == 0 || maxCut > 0); x, maxCut = x+1, maxCut-1 {
for x, maxCut := imgArea.Min.X, maxCutX; x < imgArea.Max.X && (maxCutX == 0 || maxCut > 0); x, maxCut = x+1, maxCut-1 {
allowNonBlank := imgArea.Dy() * cutRatio.Left / 100
for y := imgArea.Min.Y; y < imgArea.Max.Y; y++ {
if !colorIsBlank(img.At(x, y)) {
@ -43,7 +45,7 @@ LEFT:
}
UP:
for y, maxCut := imgArea.Min.Y, limit; y < imgArea.Max.Y && (limit == 0 || maxCut > 0); y, maxCut = y+1, maxCut-1 {
for y, maxCut := imgArea.Min.Y, maxCutY; y < imgArea.Max.Y && (maxCutY == 0 || maxCut > 0); y, maxCut = y+1, maxCut-1 {
allowNonBlank := imgArea.Dx() * cutRatio.Up / 100
for x := imgArea.Min.X; x < imgArea.Max.X; x++ {
if !colorIsBlank(img.At(x, y)) {
@ -57,7 +59,7 @@ UP:
}
RIGHT:
for x, maxCut := imgArea.Max.X-1, limit; x >= imgArea.Min.X && (limit == 0 || maxCut > 0); x, maxCut = x-1, maxCut-1 {
for x, maxCut := imgArea.Max.X-1, maxCutX; x >= imgArea.Min.X && (maxCutX == 0 || maxCut > 0); x, maxCut = x-1, maxCut-1 {
allowNonBlank := imgArea.Dy() * cutRatio.Right / 100
for y := imgArea.Min.Y; y < imgArea.Max.Y; y++ {
if !colorIsBlank(img.At(x, y)) {
@ -71,7 +73,7 @@ RIGHT:
}
BOTTOM:
for y, maxCut := imgArea.Max.Y-1, limit; y >= imgArea.Min.Y && (limit == 0 || maxCut > 0); y, maxCut = y-1, maxCut-1 {
for y, maxCut := imgArea.Max.Y-1, maxCutY; y >= imgArea.Min.Y && (maxCutY == 0 || maxCut > 0); y, maxCut = y-1, maxCut-1 {
allowNonBlank := imgArea.Dx() * cutRatio.Bottom / 100
for x := imgArea.Min.X; x < imgArea.Max.X; x++ {
if !colorIsBlank(img.At(x, y)) {