Update PNG output to match PHP impl. better
This commit is contained in:
Maddie Zhan
parent
fe438802ca
commit
890bc10096
@ -43,10 +43,14 @@ var (
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hostnameRegex = regexp.MustCompile(`"hostname":"([^\\\\"]|\\\\")*"`)
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fontLight, fontBold *truetype.Font
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labelFace, valueFace, smallLabelFace, orgFace, watermarkFace font.Face
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pingJitterLabelFace, upDownLabelFace, pingJitterValueFace, upDownValueFace, smallLabelFace, ispFace, watermarkFace font.Face
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canvasWidth, canvasHeight = 800, 600
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canvasWidth, canvasHeight = 500, 286
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dpi = 150.0
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topOffset = 10
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middleOffset = topOffset + 5
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bottomOffset = middleOffset - 10
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ispOffset = bottomOffset + 8
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colorLabel = image.NewUniform(color.RGBA{40, 40, 40, 255})
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colorDownload = image.NewUniform(color.RGBA{96, 96, 170, 255})
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colorUpload = image.NewUniform(color.RGBA{96, 96, 96, 255})
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@ -99,32 +103,44 @@ func Initialize(c *config.Config) {
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fontBold = f
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}
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labelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 26,
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pingJitterLabelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 12,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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valueFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 36,
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upDownLabelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 14,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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smallLabelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 20,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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orgFace = truetype.NewFace(fontBold, &truetype.Options{
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pingJitterValueFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 16,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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upDownValueFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 18,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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smallLabelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 10,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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ispFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 8,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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watermarkFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 14,
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Size: 6,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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@ -215,7 +231,7 @@ func DrawPNG(w http.ResponseWriter, r *http.Request) {
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drawer := &font.Drawer{
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Dst: canvas,
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Face: labelFace,
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Face: pingJitterLabelFace,
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}
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drawer.Src = colorLabel
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@ -223,40 +239,41 @@ func DrawPNG(w http.ResponseWriter, r *http.Request) {
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// labels
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p := drawer.MeasureString(labelPing)
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x := canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/10)
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drawer.Dot = freetype.Pt(x, canvasHeight/10+topOffset)
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drawer.DrawString(labelPing)
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p = drawer.MeasureString(labelJitter)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/10)
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drawer.Dot = freetype.Pt(x, canvasHeight/10+topOffset)
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drawer.DrawString(labelJitter)
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drawer.Face = upDownLabelFace
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p = drawer.MeasureString(labelDownload)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/2)
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drawer.Dot = freetype.Pt(x, canvasHeight/2-middleOffset)
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drawer.DrawString(labelDownload)
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p = drawer.MeasureString(labelUpload)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/2)
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drawer.Dot = freetype.Pt(x, canvasHeight/2-middleOffset)
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drawer.DrawString(labelUpload)
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drawer.Face = smallLabelFace
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drawer.Src = colorMeasure
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p = drawer.MeasureString(labelMbps)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10)
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10-middleOffset)
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drawer.DrawString(labelMbps)
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p = drawer.MeasureString(labelMbps)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10)
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10-middleOffset)
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drawer.DrawString(labelMbps)
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msLength := drawer.MeasureString(labelMS)
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// ping value
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drawer.Face = valueFace
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drawer.Face = pingJitterValueFace
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pingValue := strings.Split(record.Ping, ".")[0]
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p = drawer.MeasureString(pingValue)
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@ -271,13 +288,12 @@ func DrawPNG(w http.ResponseWriter, r *http.Request) {
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drawer.DrawString(labelMS)
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// jitter value
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drawer.Face = valueFace
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jitterValue := strings.Split(record.Jitter, ".")[0]
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p = drawer.MeasureString(jitterValue)
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drawer.Face = pingJitterValueFace
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p = drawer.MeasureString(record.Jitter)
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x = canvasWidth*3/4 - (p.Round()+msLength.Round())/2
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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drawer.Src = colorJitter
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drawer.DrawString(jitterValue)
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drawer.DrawString(record.Jitter)
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drawer.Face = smallLabelFace
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x = x + p.Round()
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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@ -285,17 +301,17 @@ func DrawPNG(w http.ResponseWriter, r *http.Request) {
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drawer.DrawString(labelMS)
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// download value
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drawer.Face = valueFace
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drawer.Face = upDownValueFace
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p = drawer.MeasureString(record.Download)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40)
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40-middleOffset)
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drawer.Src = colorDownload
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drawer.DrawString(record.Download)
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// upload value
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p = drawer.MeasureString(record.Upload)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40)
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40-middleOffset)
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drawer.Src = colorUpload
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drawer.DrawString(record.Upload)
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@ -310,28 +326,33 @@ func DrawPNG(w http.ResponseWriter, r *http.Request) {
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drawer.Src = colorWatermark
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p = drawer.MeasureString(watermark)
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x = canvasWidth - p.Round() - 5
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drawer.Dot = freetype.Pt(x, canvasHeight-10)
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drawer.Dot = freetype.Pt(x, canvasHeight-bottomOffset)
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drawer.DrawString(watermark)
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// timestamp
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ts := record.Timestamp.Format("2006-01-02 15:04:05")
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p = drawer.MeasureString(ts)
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drawer.Dot = freetype.Pt(8, canvasHeight-bottomOffset)
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drawer.DrawString(ts)
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// separator
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for i := canvas.Bounds().Min.X; i < canvas.Bounds().Max.X; i++ {
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canvas.Set(i, canvasHeight-ctx.PointToFixed(14).Round()-10, colorSeparator)
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canvas.Set(i, canvasHeight-ctx.PointToFixed(6).Round()-bottomOffset, colorSeparator)
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}
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// ISP info
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drawer.Face = orgFace
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drawer.Face = ispFace
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drawer.Src = colorISP
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drawer.Dot = freetype.Pt(6, canvasHeight-ctx.PointToFixed(14).Round()-15)
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if result.RawISPInfo.Organization != "" {
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removeRegexp := regexp.MustCompile(`AS\d+\s`)
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org := removeRegexp.ReplaceAllString(result.RawISPInfo.Organization, "")
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if result.RawISPInfo.Country != "" {
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org += ", " + result.RawISPInfo.Country
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drawer.Dot = freetype.Pt(8, canvasHeight-ctx.PointToFixed(6).Round()-ispOffset)
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var ispString string
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if strings.Contains(result.ProcessedString, "-") {
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str := strings.SplitN(result.ProcessedString, "-", 2)
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if strings.Contains(str[0], "(") {
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str = strings.SplitN(str[0], "(", 2)
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}
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drawer.DrawString(org)
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} else {
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drawer.DrawString(result.ProcessedString)
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ispString = str[0]
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}
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drawer.DrawString("ISP: " + ispString)
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w.Header().Set("Content-Disposition", "inline; filename="+uuid+".png")
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w.Header().Set("Content-Type", "image/png")
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