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web-server
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Make resize point same as resize to ensure seamless images

This commit is contained in:
Kelvin Ly 2019-11-20 22:56:53 -05:00
parent ff90aa1f5f
commit 89260f0979
3 changed files with 4 additions and 6 deletions
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1
main.go
View File

@ -96,7 +96,6 @@ func serveMarkdown(w http.ResponseWriter, r *http.Request, paths ...string) {
pathDir = pathDir[:lastSlash] pathDir = pathDir[:lastSlash]
} }
// Markdown uses the path to generate the correct paths for resized images // Markdown uses the path to generate the correct paths for resized images
log.Print(paths[i], "->", pathDir)
html := Markdown(b, pathDir) html := Markdown(b, pathDir)
w.Write(html) w.Write(html)
} }

4
markdown.go
View File

@ -15,7 +15,6 @@ package main
import ( import (
"bytes" "bytes"
"fmt" "fmt"
"log"
"regexp" "regexp"
"sort" "sort"
"strings" "strings"
@ -33,7 +32,6 @@ import (
// Markdown renders GitHub Flavored Markdown text. // Markdown renders GitHub Flavored Markdown text.
func Markdown(text []byte, path string) []byte { func Markdown(text []byte, path string) []byte {
log.Print("markdown " + path)
const htmlFlags = 0 const htmlFlags = 0
renderer := &renderer{ renderer := &renderer{
Html: blackfriday.HtmlRenderer(htmlFlags, "", "").(*blackfriday.Html), path: path} Html: blackfriday.HtmlRenderer(htmlFlags, "", "").(*blackfriday.Html), path: path}
@ -120,7 +118,7 @@ func (r *renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byt
writeSource := func() { writeSource := func() {
out.WriteString("<source srcset=\"") out.WriteString("<source srcset=\"")
attrEscape(out, link) attrEscape(out, link)
out.WriteString("\" media=\"(min-width: 1024px)\">") out.WriteString("\" media=\"(min-width: 800px)\">")
} }
// link to outside of this website // link to outside of this website
if bytes.HasPrefix(link, []byte("http")) { if bytes.HasPrefix(link, []byte("http")) {

5
resize.go
View File

@ -39,9 +39,10 @@ func Resize(maxWidth uint, h http.Handler) http.Handler {
rw.Write([]byte("error while decoding png: " + err.Error())) rw.Write([]byte("error while decoding png: " + err.Error()))
return return
} }
resizedImage := resize.Thumbnail(maxWidth, 0, image, resize.Lanczos3) resizedImage := resize.Thumbnail(2*maxWidth, 100000, image, resize.NearestNeighbor)
resizedBuf := new(bytes.Buffer) resizedBuf := new(bytes.Buffer)
if encodeErr := png.Encode(resizedBuf, resizedImage); encodeErr != nil { encoder := png.Encoder{CompressionLevel: png.BestCompression}
if encodeErr := encoder.Encode(resizedBuf, resizedImage); encodeErr != nil {
rw.WriteHeader(501) rw.WriteHeader(501)
rw.Write([]byte("error while encoding png: " + err.Error())) rw.Write([]byte("error while encoding png: " + err.Error()))
return return