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vis.go
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// Copyright 2019 Gregory Petrosyan <gregory.petrosyan@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
package rapid
import (
"bytes"
"encoding/base64"
"fmt"
"html/template"
"image"
"image/color"
"image/png"
"io"
"math"
"time"
)
var (
visBitSetColor = color.Black
visBitUnsetColor = color.White
visTmpl = template.Must(template.New("rapid-vis").Parse(visHTML))
)
type visTmplData struct {
Title string
Images [][]*visTmplImage
VisCSS template.CSS
RebootCSS template.CSS
}
type visGroupInfo struct {
Classes string
Label string
}
type visTmplImage struct {
Base64 string
Title string
Alt string
Width int
Height int
GroupBegins []visGroupInfo
GroupEnds []visGroupInfo
}
func visWriteHTML(w io.Writer, title string, recData []recordedBits) error {
d := &visTmplData{
Title: fmt.Sprintf("%v (%v)", title, time.Now().Format(time.RFC1123)),
VisCSS: template.CSS(visCSS),
RebootCSS: template.CSS(visRebootCSS),
}
labelClasses := map[string]string{}
lastLabelClass := 0
for _, rd := range recData {
var images []*visTmplImage
for _, u := range rd.data {
tmplImg, err := visNewUint64Image(u).toTmplImage()
if err != nil {
return err
}
images = append(images, tmplImg)
}
for _, group := range rd.groups {
if _, ok := labelClasses[group.label]; !ok {
labelClasses[group.label] = fmt.Sprintf("label-%v", lastLabelClass)
lastLabelClass++
}
}
for _, group := range rd.groups {
images[group.begin].GroupBegins = append(images[group.begin].GroupBegins, visGroupToInfo(labelClasses, group))
if group.end > 0 {
images[group.end-1].GroupEnds = append(images[group.end-1].GroupEnds, visGroupToInfo(labelClasses, group))
}
}
d.Images = append(d.Images, images)
}
return visTmpl.Execute(w, d)
}
func visGroupToInfo(labelClasses map[string]string, group groupInfo) visGroupInfo {
discardClass := ""
if group.discard {
discardClass = "discard "
}
endlessClass := ""
if group.end <= 0 {
endlessClass = "endless "
}
return visGroupInfo{
Classes: discardClass + endlessClass + labelClasses[group.label],
Label: group.label,
}
}
type visUint64Image struct {
u uint64
p color.Palette
}
func visNewUint64Image(u uint64) *visUint64Image {
s := newRandomBitStream(u, false)
h1 := genFloat01(s)
h2 := genFloat01(s)
return &visUint64Image{
u: u,
p: color.Palette{visBitSetColor, visBitUnsetColor, visHsv(h1*360, 1, 1), visHsv(h2*360, 1, 1)},
}
}
func (img *visUint64Image) ColorModel() color.Model {
return img.p
}
func (img *visUint64Image) Bounds() image.Rectangle {
return image.Rect(0, 0, 64, 2)
}
func (img *visUint64Image) ColorIndexAt(x, y int) uint8 {
switch y {
case 0:
if (x/8)%2 == 0 {
return 2
}
return 3
default:
if img.u&(1<<uint(63-x)) != 0 {
return 0
}
return 1
}
}
func (img *visUint64Image) At(x, y int) color.Color {
return img.p[img.ColorIndexAt(x, y)]
}
func (img *visUint64Image) toTmplImage() (*visTmplImage, error) {
enc := png.Encoder{
CompressionLevel: png.BestCompression,
}
var buf bytes.Buffer
err := enc.Encode(&buf, img)
if err != nil {
return nil, err
}
return &visTmplImage{
Base64: base64.StdEncoding.EncodeToString(buf.Bytes()),
Title: fmt.Sprintf("0x%x / %d", img.u, img.u),
Alt: fmt.Sprintf("0x%x", img.u),
Width: 64,
Height: 2,
}, nil
}
const visHTML = `<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="description" content="rapid debug data visualization">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>[rapid] {{.Title}}</title>
<style>
{{- .RebootCSS }}
</style>
<style>
{{- .VisCSS }}
</style>
</head>
<body>
<h1>{{.Title}}</h1>
{{range .Images -}}
<div class="vis">
{{range . -}}
{{range .GroupBegins}}<span title="{{.Label}}" class="group {{.Classes}}"><span class="label">{{.Label}}</span>{{end}}
<img title="{{.Title}}" alt="{{.Alt}}" width="{{.Width}}" height="{{.Height}}" src="data:image/png;base64,{{.Base64}}">
{{range .GroupEnds}}</span>{{end}}
{{end}}
</div>
{{end}}
</body>
</html>`
const visCSS = `
body {
margin: 1rem;
}
.vis {
display: flex;
margin-bottom: 1rem;
}
.vis img {
height: 1rem;
margin: 0.3rem;
image-rendering: pixelated;
image-rendering: crisp-edges;
image-rendering: -moz-crisp-edges;
-ms-interpolation-mode: nearest-neighbor;
}
.vis .group {
position: relative;
display: inline-flex;
padding: 0 0 1rem;
background-color: rgba(0, 0, 0, 0.05);
border-radius: 0 0 0.5rem 0.5rem;
border-bottom: 2px solid black;
}
.vis .group.discard {
background-color: rgba(255, 0, 0, 0.2);
}
.vis .group.endless {
background-color: white;
}
.vis .group .label {
font-size: 80%;
white-space: nowrap;
position: absolute;
bottom: 0;
left: 0.3rem;
max-width: 100%;
overflow: hidden;
}
.vis .group.discard > .label {
color: red;
}
.vis .group.label-0 {
border-bottom-color: red;
}
.vis .group.label-1 {
border-bottom-color: maroon;
}
.vis .group.label-2 {
border-bottom-color: yellow;
}
.vis .group.label-3 {
border-bottom-color: olive;
}
.vis .group.label-4 {
border-bottom-color: lime;
}
.vis .group.label-5 {
border-bottom-color: green;
}
.vis .group.label-6 {
border-bottom-color: aqua;
}
.vis .group.label-7 {
border-bottom-color: teal;
}
.vis .group.label-8 {
border-bottom-color: blue;
}
.vis .group.label-9 {
border-bottom-color: navy;
}
.vis .group.label-10 {
border-bottom-color: fuchsia;
}
.vis .group.label-11 {
border-bottom-color: purple;
}
.vis .group.label-12 {
border-bottom-color: red;
}
.vis .group.label-13 {
border-bottom-color: maroon;
}
.vis .group.label-14 {
border-bottom-color: yellow;
}
.vis .group.label-15 {
border-bottom-color: olive;
}
.vis .group.label-16 {
border-bottom-color: lime;
}
.vis .group.label-17 {
border-bottom-color: green;
}
.vis .group.label-18 {
border-bottom-color: aqua;
}
.vis .group.label-19 {
border-bottom-color: teal;
}
.vis .group.label-20 {
border-bottom-color: blue;
}
.vis .group.label-21 {
border-bottom-color: navy;
}
.vis .group.label-22 {
border-bottom-color: fuchsia;
}
.vis .group.label-23 {
border-bottom-color: purple;
}
`
const visRebootCSS = `
/*!
* Bootstrap Reboot v4.1.3 (https://getbootstrap.com/)
* Copyright 2011-2018 The Bootstrap Authors
* Copyright 2011-2018 Twitter, Inc.
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
*/
*,
*::before,
*::after {
box-sizing: border-box;
}
html {
font-family: sans-serif;
line-height: 1.15;
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
-ms-overflow-style: scrollbar;
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
@-ms-viewport {
width: device-width;
}
article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
display: block;
}
body {
margin: 0;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
font-size: 1rem;
font-weight: 400;
line-height: 1.5;
color: #212529;
text-align: left;
background-color: #fff;
}
[tabindex="-1"]:focus {
outline: 0 !important;
}
hr {
box-sizing: content-box;
height: 0;
overflow: visible;
}
h1, h2, h3, h4, h5, h6 {
margin-top: 0;
margin-bottom: 0.5rem;
}
p {
margin-top: 0;
margin-bottom: 1rem;
}
abbr[title],
abbr[data-original-title] {
text-decoration: underline;
-webkit-text-decoration: underline dotted;
text-decoration: underline dotted;
cursor: help;
border-bottom: 0;
}
address {
margin-bottom: 1rem;
font-style: normal;
line-height: inherit;
}
ol,
ul,
dl {
margin-top: 0;
margin-bottom: 1rem;
}
ol ol,
ul ul,
ol ul,
ul ol {
margin-bottom: 0;
}
dt {
font-weight: 700;
}
dd {
margin-bottom: .5rem;
margin-left: 0;
}
blockquote {
margin: 0 0 1rem;
}
dfn {
font-style: italic;
}
b,
strong {
font-weight: bolder;
}
small {
font-size: 80%;
}
sub,
sup {
position: relative;
font-size: 75%;
line-height: 0;
vertical-align: baseline;
}
sub {
bottom: -.25em;
}
sup {
top: -.5em;
}
a {
color: #007bff;
text-decoration: none;
background-color: transparent;
}
a:hover {
color: #0056b3;
text-decoration: underline;
}
a:not([href]):not([tabindex]) {
color: inherit;
text-decoration: none;
}
a:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {
color: inherit;
text-decoration: none;
}
a:not([href]):not([tabindex]):focus {
outline: 0;
}
pre,
code,
kbd,
samp {
font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
font-size: 1em;
}
pre {
margin-top: 0;
margin-bottom: 1rem;
overflow: auto;
-ms-overflow-style: scrollbar;
}
figure {
margin: 0 0 1rem;
}
img {
vertical-align: middle;
border-style: none;
}
svg {
overflow: hidden;
vertical-align: middle;
}
table {
border-collapse: collapse;
}
caption {
padding-top: 0.75rem;
padding-bottom: 0.75rem;
color: #6c757d;
text-align: left;
caption-side: bottom;
}
th {
text-align: inherit;
}
label {
display: inline-block;
margin-bottom: 0.5rem;
}
button {
border-radius: 0;
}
button:focus {
outline: 1px dotted;
outline: 5px auto -webkit-focus-ring-color;
}
input,
button,
select,
optgroup,
textarea {
margin: 0;
font-family: inherit;
font-size: inherit;
line-height: inherit;
}
button,
input {
overflow: visible;
}
button,
select {
text-transform: none;
}
button,
html [type="button"],
[type="reset"],
[type="submit"] {
-webkit-appearance: button;
}
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
padding: 0;
border-style: none;
}
input[type="radio"],
input[type="checkbox"] {
box-sizing: border-box;
padding: 0;
}
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="month"] {
-webkit-appearance: listbox;
}
textarea {
overflow: auto;
resize: vertical;
}
fieldset {
min-width: 0;
padding: 0;
margin: 0;
border: 0;
}
legend {
display: block;
width: 100%;
max-width: 100%;
padding: 0;
margin-bottom: .5rem;
font-size: 1.5rem;
line-height: inherit;
color: inherit;
white-space: normal;
}
progress {
vertical-align: baseline;
}
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
height: auto;
}
[type="search"] {
outline-offset: -2px;
-webkit-appearance: none;
}
[type="search"]::-webkit-search-cancel-button,
[type="search"]::-webkit-search-decoration {
-webkit-appearance: none;
}
::-webkit-file-upload-button {
font: inherit;
-webkit-appearance: button;
}
output {
display: inline-block;
}
summary {
display: list-item;
cursor: pointer;
}
template {
display: none;
}
[hidden] {
display: none !important;
}
`
// Copyright 2013 Lucas Beyer
// Licensed under MIT (https://github.com/lucasb-eyer/go-colorful/blob/master/LICENSE)
//
// Hsv creates a new Color given a Hue in [0..360], a Saturation and a Value in [0..1]
func visHsv(H, S, V float64) color.RGBA {
Hp := H / 60.0
C := V * S
X := C * (1.0 - math.Abs(math.Mod(Hp, 2.0)-1.0))
m := V - C
r, g, b := 0.0, 0.0, 0.0
switch {
case 0.0 <= Hp && Hp < 1.0:
r = C
g = X
case 1.0 <= Hp && Hp < 2.0:
r = X
g = C
case 2.0 <= Hp && Hp < 3.0:
g = C
b = X
case 3.0 <= Hp && Hp < 4.0:
g = X
b = C
case 4.0 <= Hp && Hp < 5.0:
r = X
b = C
case 5.0 <= Hp && Hp < 6.0:
r = C
b = X
}
return color.RGBA{R: uint8((m + r) * 255), G: uint8((m + g) * 255), B: uint8((m + b) * 255), A: 255}
}