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adaptive background color

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This commit is contained in:
Antoni Sawicki 2019-08-12 23:35:29 -07:00
parent f0ba852785
commit 4cd55b31b0
1 changed files with 16 additions and 9 deletions
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25
wrp.go
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@ -25,6 +25,7 @@ import (
"syscall" "syscall"
"time" "time"
"github.com/chromedp/cdproto/css"
"github.com/chromedp/cdproto/emulation" "github.com/chromedp/cdproto/emulation"
"github.com/chromedp/chromedp" "github.com/chromedp/chromedp"
"github.com/ericpauley/go-quantize/quantize" "github.com/ericpauley/go-quantize/quantize"
@ -79,13 +80,13 @@ func (w *wrpReq) parseForm(req *http.Request) {
log.Printf("%s WrpReq from Form: %+v\n", req.RemoteAddr, w) log.Printf("%s WrpReq from Form: %+v\n", req.RemoteAddr, w)
} }
func (w wrpReq) printPage(out http.ResponseWriter) { func (w wrpReq) printPage(out http.ResponseWriter, bgcolor string) {
out.Header().Set("Cache-Control", "max-age=0") out.Header().Set("Cache-Control", "max-age=0")
out.Header().Set("Expires", "-1") out.Header().Set("Expires", "-1")
out.Header().Set("Pragma", "no-cache") out.Header().Set("Pragma", "no-cache")
out.Header().Set("Content-Type", "text/html") out.Header().Set("Content-Type", "text/html")
fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version) fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version)
fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", w.U) fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"%s\">\n", w.U, bgcolor)
fmt.Fprintf(out, "<FORM ACTION=\"/\" METHOD=\"POST\">\n") fmt.Fprintf(out, "<FORM ACTION=\"/\" METHOD=\"POST\">\n")
fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"10\">", w.U) fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"10\">", w.U)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\">\n") fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\">\n")
@ -117,7 +118,7 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
if len(w.U) > 4 { if len(w.U) > 4 {
w.capture(req.RemoteAddr, out) w.capture(req.RemoteAddr, out)
} else { } else {
w.printPage(out) w.printPage(out, "#FFFFFF")
w.printFooter(out) w.printFooter(out)
} }
} }
@ -143,7 +144,7 @@ func mapServer(out http.ResponseWriter, req *http.Request) {
if len(w.U) > 4 { if len(w.U) > 4 {
w.capture(req.RemoteAddr, out) w.capture(req.RemoteAddr, out)
} else { } else {
w.printPage(out) w.printPage(out, "#FFFFFF")
w.printFooter(out) w.printFooter(out)
} }
} }
@ -172,6 +173,8 @@ func (w wrpReq) capture(c string, out http.ResponseWriter) {
var pngbuf []byte var pngbuf []byte
var gifbuf bytes.Buffer var gifbuf bytes.Buffer
var err error var err error
var styles []*css.ComputedProperty
var r, g, b int
if w.X > 0 && w.Y > 0 { if w.X > 0 && w.Y > 0 {
log.Printf("%s Mouse Click %d,%d\n", c, w.X, w.Y) log.Printf("%s Mouse Click %d,%d\n", c, w.X, w.Y)
@ -204,7 +207,6 @@ func (w wrpReq) capture(c string, out http.ResponseWriter) {
chromedp.Navigate(w.U), chromedp.Navigate(w.U),
) )
} }
if err != nil { if err != nil {
if err.Error() == "context canceled" { if err.Error() == "context canceled" {
log.Printf("%s Contex cancelled, try again", c) log.Printf("%s Contex cancelled, try again", c)
@ -216,13 +218,18 @@ func (w wrpReq) capture(c string, out http.ResponseWriter) {
} }
return return
} }
chromedp.Run(ctx,
chromedp.Run( chromedp.Sleep(time.Second*2),
ctx, chromedp.Sleep(time.Second*2), chromedp.ComputedStyle("body", &styles, chromedp.ByQuery),
chromedp.Location(&w.U), chromedp.Location(&w.U),
) )
log.Printf("%s Landed on: %s\n", c, w.U) log.Printf("%s Landed on: %s\n", c, w.U)
w.printPage(out) for _, style := range styles {
if style.Name == "background-color" {
fmt.Sscanf(style.Value, "rgb(%d,%d,%d)", &r, &g, &b)
}
}
w.printPage(out, fmt.Sprintf("#%02X%02X%02X", r, g, b))
// Process Screenshot Image // Process Screenshot Image
err = chromedp.Run(ctx, chromedp.CaptureScreenshot(&pngbuf)) err = chromedp.Run(ctx, chromedp.CaptureScreenshot(&pngbuf))