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Implement auto dark/light theme switch. The button cycles among auto/forced light/forced dark theme. #29

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Implement auto dark/light theme switch. The button cycles among auto/forced light/forced dark theme. #29

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109 changes: 109 additions & 0 deletions 3ed-2018/auto-dark.svg
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101 changes: 101 additions & 0 deletions 3ed-2018/auto-light.svg
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4 changes: 2 additions & 2 deletions 3ed-2018/dark.svg
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4 changes: 2 additions & 2 deletions 3ed-2018/light.svg
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27 changes: 26 additions & 1 deletion 3ed-2018/pbrstyle.css
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,32 @@ p {
--legend: #000;
--footnote-btn: #6080e0;
--footnote-btn-bg: #fff;
--icon: url("/3ed-2018/light.svg");
--icon: url("/3ed-2018/auto-light.svg");
}

@media (prefers-color-scheme: dark) {
:root {
--bg: #3a3a3a;
--bg-navbar: #343434;
--bg-cse: #343434;
--bg-table: #383838;
--bg-tooltip: #444444;
--bg-navlink-active: #444;
--border-color: rgba(255, 255, 255, 0.125);
--text: #acacac;
--text-navbar: rgb(172, 172, 172, 0.75);
--landing-title: #eee;
--link: #7186ac;
--link-active: blue;
--table-outline: #dee2e6;
--text-red: #ff0000;
--text-midred: #a00000;
--fig-outline: #404040;
--legend: #acacac;
--footnote-btn: #6080e0;
--footnote-btn-bg: #3a3a3a;
--icon: url(/3ed-2018/auto-dark.svg);
}
}

body {
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28 changes: 20 additions & 8 deletions 3ed-2018/pbrt-display.js
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Expand Up @@ -46,23 +46,35 @@ function setPBRTDisplayModeVars(displayMode)
document.documentElement.style.setProperty('--text-red', '#ff0000');
}

function clearPBRTDisplayModeVars()
{
document.documentElement.removeAttribute("style");
}

function setPBRTDisplayMode()
{
var displayMode = localStorage.getItem("displayMode");
if(displayMode == "null") {
displayMode = 0; // no stored display mode, default to light mode
localStorage.setItem("displayMode", displayMode);
if(displayMode != null) {
setPBRTDisplayModeVars(displayMode);
}
setPBRTDisplayModeVars(displayMode);
}

function TogglePBRTDisplayMode()
{
var displayMode = localStorage.getItem("displayMode");
if(displayMode == 0) displayMode = 1;
else if(displayMode == 1) displayMode = 0;
localStorage.setItem("displayMode", displayMode); // update the stored display mode
setPBRTDisplayModeVars(displayMode);
if(displayMode == "0")
displayMode = "1";
else if(displayMode == "1")
displayMode = null;
else if(displayMode == null)
displayMode = "0";
if (displayMode != null) {
localStorage.setItem("displayMode", displayMode); // update the stored display mode
setPBRTDisplayModeVars(displayMode);
} else {
localStorage.removeItem("displayMode");
clearPBRTDisplayModeVars();
}
}

setPBRTDisplayMode();