Add script to generate RRD vs. screenshots comparisons

.gitignore

@@ -44,5 +44,8 @@ screenshot*.png
 # Web demo app build
 web_demo
 
+# Screenshot comparison build
+/compare_screenshot
+
 .nox/
 *.rrd

scripts/screenshot_compare/assets/static/index.css

@@ -0,0 +1,329 @@
+html {
+  /* Remove touch delay: */
+  touch-action: manipulation;
+}
+
+body {
+  background: #0d1011;
+}
+
+/* Allow canvas to fill entire web page: */
+html,
+body {
+  overflow: hidden;
+  margin: 0 !important;
+  padding: 0 !important;
+  height: 100%;
+  width: 100%;
+}
+
+/* When used, the screen splitter is a 50/50 split between the canvas and the image. */
+.screen_splitter {
+  position: absolute;
+  height: 100vh;
+  width: 50vw;
+}
+
+.screen_splitter img {
+  position: absolute;
+  top: 0%;
+  left: 50vw;
+  width: 50vw;
+  /*transform: translate(-50%, 0%);*/
+}
+
+/* Position canvas in center-top: */
+canvas {
+  margin-right: auto;
+  margin-left: auto;
+  display: block;
+  position: absolute;
+  box-sizing: border-box;
+  top: 0;
+  left: 0;
+
+  /* canvas must be on top when visible */
+  z-index: 1000;
+}
+
+* {
+  font-family: "Inter", sans-serif;
+  color: #cad8de;
+}
+
+/* Match the Rerun header bar. */
+.header {
+  width: 100%;
+  height: 44px;
+  /* Actual value from Rerun Viewer */
+  background: #141414;
+}
+
+/* Create a container filling the remaining space. */
+.container {
+  position: absolute;
+  height: calc(100vh - 44px);
+  width: 100vw;
+}
+
+/* Centered div inside the container. */
+.centered {
+  margin-right: auto;
+  margin-left: auto;
+  display: block;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  text-align: center;
+}
+
+/* Rerun styling for normal text. */
+p {
+  /*Gray-775*/
+  color: #cad8de;
+  letter-spacing: -0.15px;
+  font-weight: 500;
+}
+
+/* Rerun styling for strong text. Matches `TextStyle::Heading`. */
+.strong {
+  /*Gray-775*/
+  color: #cad8de;
+  /* Match current rerun header value */
+  font-size: 16px;
+}
+
+/* Rerun styling for subdued text.*/
+.subdued {
+  /*Gray-550*/
+  color: #7d8c92;
+  /* Larger subdued size to match current rerun font */
+  font-size: 12px;
+  letter-spacing: -0.12px;
+}
+
+pre {
+  /*Gray-550*/
+  color: #7d8c92;
+  font-size: 10px;
+  letter-spacing: -0.12px;
+}
+
+a .button {
+  display: inline-block;
+  background: white;
+  color: black;
+  padding: 0.75rem 1rem;
+  border-radius: 8px;
+  text-decoration: none;
+  font-weight: 500;
+}
+
+/* Transition to hidden */
+.hidden {
+  opacity: 0;
+  transition: opacity 0.2s ease-out;
+  visibility: hidden;
+}
+
+/* Transition to visible */
+.visible {
+  opacity: 100;
+  transition: opacity 0.2s ease-in;
+  visibility: visible;
+}
+
+.demo_header {
+  z-index: 1100;
+  position: absolute;
+  transform: translate(-50%, 0);
+  left: 50%;
+  height: 44px;
+
+  display: flex;
+  flex-direction: row;
+  gap: 4px;
+
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+.no-select {
+  user-select: none;
+}
+
+.examples {
+  position: relative;
+  top: 11px;
+}
+
+.example-description {
+  margin-top: 6px;
+  height: 40px;
+  border: none;
+  border-radius: 33%;
+}
+
+.example-description:hover > .example-description-body {
+  display: flex;
+}
+
+.example-description:hover > .example-description-icon {
+  background: #404040;
+  border: none;
+  border-radius: 5px;
+}
+
+.example-description-icon {
+  display: flex;
+  justify-content: center;
+  margin: 4px;
+  padding: 2px;
+  width: 20px;
+  height: 20px;
+  user-select: none;
+}
+
+.example-description-body {
+  display: none;
+
+  flex-direction: column;
+  gap: 8px;
+
+  position: absolute;
+  top: 100%;
+
+  background: #262626;
+  border: none;
+  border-radius: 6px;
+  padding: 12px;
+
+  font-size: 13px;
+  line-height: 1.33;
+  letter-spacing: 0;
+
+  width: 280px;
+}
+
+.example-description-body > p {
+  margin: 0;
+}
+
+a.icon-link {
+  margin: 5px;
+  padding: 5px;
+  width: 24.5px;
+  height: 24px;
+}
+
+a.icon-link:hover {
+  background: #404040;
+  border: none;
+  border-radius: 50%;
+}
+
+img.icon {
+  max-height: 100%;
+}
+
+.dropdown {
+  position: relative;
+}
+
+.dropdown-title {
+  display: flex;
+  gap: 2px;
+  user-select: none;
+  cursor: pointer;
+
+  background: #141414;
+  border: none;
+  border-radius: 6px;
+  padding: 2px 5px 2px 8px;
+
+  font-style: normal;
+  font-weight: 435;
+  font-size: 14px;
+  line-height: 16px;
+}
+
+.dropdown-title > img {
+  width: 16px;
+  height: 16px;
+}
+
+.dropdown-title:hover {
+  background: #404040;
+}
+
+.dropdown-title:active {
+  background: #404040;
+}
+
+.dropdown-body {
+  display: none;
+
+  flex-direction: column;
+  gap: 3px;
+
+  position: absolute;
+  top: 100%;
+  left: 0;
+
+  background: #262626;
+  border: none;
+  border-radius: 6px;
+  padding: 6px;
+
+  user-select: none;
+  font-size: 12px;
+}
+
+.dropdown-body.visible {
+  display: flex;
+}
+
+.dropdown-entry {
+  padding: 2px 5px;
+  border: none;
+  border-radius: 6px;
+  font-size: 13px;
+  display: flex;
+  justify-content: space-between;
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.dropdown-entry:hover {
+  background: #404040;
+}
+
+a.flat-link {
+  text-decoration: none;
+}
+
+.centered {
+  margin-right: auto;
+  margin-left: auto;
+  display: block;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  color: #cad8de;
+  font-size: 24px;
+  font-family: Ubuntu-Light, Helvetica, sans-serif;
+  text-align: center;
+}
+
+a.button {
+  display: inline-block;
+  background: white;
+  color: black;
+  padding: 0.75rem 1rem;
+  border-radius: 8px;
+  text-decoration: none;
+  font-weight: 500;
+}
+