celogeek/go-comic-converter
1
0
Fork 0
mirror of https://github.com/celogeek/go-comic-converter.git synced 2025-05-24 15:52:38 +02:00
Code Issues Packages Projects Releases Wiki Activity

remove pointer from epub filters

Browse Source
This commit is contained in:
Celogeek 2024-05-11 14:26:04 +02:00
parent 5404390fd8
commit a94e67dd06
Signed by: celogeek
SSH Key Fingerprint: SHA256:njNJLzoLQdbV9PC6ehcruRb0QnEgxABoCYZ+0+aUIYc
4 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
internal/epub/imagefilters/epub_image_filters_autocontrast.go
View File

@ -10,14 +10,14 @@ import (
// AutoContrast Automatically improve contrast // AutoContrast Automatically improve contrast
func AutoContrast() gift.Filter { func AutoContrast() gift.Filter {
return &autocontrast{} return autocontrast{}
} }
type autocontrast struct { type autocontrast struct {
} }
// compute the color number between 0 and 1 that hold half of the pixel // compute the color number between 0 and 1 that hold half of the pixel
func (f *autocontrast) mean(src image.Image) float32 { func (f autocontrast) mean(src image.Image) float32 {
bucket := map[int]int{} bucket := map[int]int{}
for x := src.Bounds().Min.X; x < src.Bounds().Max.X; x++ { for x := src.Bounds().Min.X; x < src.Bounds().Max.X; x++ {
for y := src.Bounds().Min.Y; y < src.Bounds().Max.Y; y++ { for y := src.Bounds().Min.Y; y < src.Bounds().Max.Y; y++ {
@ -44,7 +44,7 @@ func (f *autocontrast) mean(src image.Image) float32 {
} }
// ensure value stay into 0 to 1 bound // ensure value stay into 0 to 1 bound
func (f *autocontrast) cap(v float32) float32 { func (f autocontrast) cap(v float32) float32 {
if v < 0 { if v < 0 {
return 0 return 0
} }
@ -55,12 +55,12 @@ func (f *autocontrast) cap(v float32) float32 {
} }
// power of 2 for float32 // power of 2 for float32
func (f *autocontrast) pow2(v float32) float32 { func (f autocontrast) pow2(v float32) float32 {
return v * v return v * v
} }
// Draw into the dst after applying the filter // Draw into the dst after applying the filter
func (f *autocontrast) Draw(dst draw.Image, src image.Image, options *gift.Options) { func (f autocontrast) Draw(dst draw.Image, src image.Image, options *gift.Options) {
// half of the pixel has this color idx // half of the pixel has this color idx
colorMean := f.mean(src) colorMean := f.mean(src)
@ -84,7 +84,7 @@ func (f *autocontrast) Draw(dst draw.Image, src image.Image, options *gift.Optio
} }
// Bounds calculates the appropriate bounds of an image after applying the filter. // Bounds calculates the appropriate bounds of an image after applying the filter.
func (*autocontrast) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) { func (autocontrast) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
dstBounds = srcBounds dstBounds = srcBounds
return return
} }

6
internal/epub/imagefilters/epub_image_filters_cover_title.go
View File

@ -13,7 +13,7 @@ import (
// CoverTitle Create a title with the cover image // CoverTitle Create a title with the cover image
func CoverTitle(title string, align string, pctWidth int, pctMargin int, maxFontSize int, borderSize int) gift.Filter { func CoverTitle(title string, align string, pctWidth int, pctMargin int, maxFontSize int, borderSize int) gift.Filter {
return &coverTitle{title, align, pctWidth, pctMargin, maxFontSize, borderSize} return coverTitle{title, align, pctWidth, pctMargin, maxFontSize, borderSize}
} }
type coverTitle struct { type coverTitle struct {
@ -26,12 +26,12 @@ type coverTitle struct {
} }
// Bounds size is the same as source // Bounds size is the same as source
func (p *coverTitle) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) { func (p coverTitle) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
return srcBounds return srcBounds
} }
// Draw blur the src image, and create a box with the title in the middle // Draw blur the src image, and create a box with the title in the middle
func (p *coverTitle) Draw(dst draw.Image, src image.Image, _ *gift.Options) { func (p coverTitle) Draw(dst draw.Image, src image.Image, _ *gift.Options) {
draw.Draw(dst, dst.Bounds(), src, src.Bounds().Min, draw.Src) draw.Draw(dst, dst.Bounds(), src, src.Bounds().Min, draw.Src)
if p.title == "" { if p.title == "" {
return return

6
internal/epub/imagefilters/epub_image_filters_crop_split_double_page.go
View File

@ -11,14 +11,14 @@ import (
// //
// This will cut in the middle of the page. // This will cut in the middle of the page.
func CropSplitDoublePage(right bool) gift.Filter { func CropSplitDoublePage(right bool) gift.Filter {
return &cropSplitDoublePage{right} return cropSplitDoublePage{right}
} }
type cropSplitDoublePage struct { type cropSplitDoublePage struct {
right bool right bool
} }
func (p *cropSplitDoublePage) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) { func (p cropSplitDoublePage) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
if p.right { if p.right {
dstBounds = image.Rect( dstBounds = image.Rect(
srcBounds.Max.X/2, srcBounds.Min.Y, srcBounds.Max.X/2, srcBounds.Min.Y,
@ -33,6 +33,6 @@ func (p *cropSplitDoublePage) Bounds(srcBounds image.Rectangle) (dstBounds image
return return
} }
func (p *cropSplitDoublePage) Draw(dst draw.Image, src image.Image, options *gift.Options) { func (p cropSplitDoublePage) Draw(dst draw.Image, src image.Image, options *gift.Options) {
gift.Crop(dst.Bounds()).Draw(dst, src, options) gift.Crop(dst.Bounds()).Draw(dst, src, options)
} }

6
internal/epub/imagefilters/epub_image_filters_pixel.go
View File

@ -12,13 +12,13 @@ import (
// //
// An image 0x0 is not a valid image, and failed to read. // An image 0x0 is not a valid image, and failed to read.
func Pixel() gift.Filter { func Pixel() gift.Filter {
return &pixel{} return pixel{}
} }
type pixel struct { type pixel struct {
} }
func (p *pixel) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) { func (p pixel) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
if srcBounds.Dx() == 0 || srcBounds.Dy() == 0 { if srcBounds.Dx() == 0 || srcBounds.Dy() == 0 {
dstBounds = image.Rect(0, 0, 1, 1) dstBounds = image.Rect(0, 0, 1, 1)
} else { } else {
@ -27,7 +27,7 @@ func (p *pixel) Bounds(srcBounds image.Rectangle) (dstBounds image.Rectangle) {
return return
} }
func (p *pixel) Draw(dst draw.Image, src image.Image, _ *gift.Options) { func (p pixel) Draw(dst draw.Image, src image.Image, _ *gift.Options) {
if dst.Bounds().Dx() == 1 && dst.Bounds().Dy() == 1 { if dst.Bounds().Dx() == 1 && dst.Bounds().Dy() == 1 {
dst.Set(0, 0, color.White) dst.Set(0, 0, color.White)
return return