From 43f8f04e2a563381573c9e6cc9b12a67ac8f71fb Mon Sep 17 00:00:00 2001
From: Catherine <whitequark@whitequark.org>
Date: Tue, 19 Mar 2024 16:49:31 +0000
Subject: [PATCH] Invert colors in diagrams if a dark theme is selected.

---
 book.toml                                    |  1 +
 text/0049-soc-gpio-peripheral/overview.svg   | 14 ++++++++++++--
 text/0049-soc-gpio-peripheral/reg-input.svg  |  2 +-
 text/0049-soc-gpio-peripheral/reg-mode.svg   |  2 +-
 text/0049-soc-gpio-peripheral/reg-output.svg |  2 +-
 text/0049-soc-gpio-peripheral/reg-setclr.svg |  2 +-
 theme/img-color-scheme.css                   | 10 ++++++++++
 7 files changed, 27 insertions(+), 6 deletions(-)
 create mode 100644 theme/img-color-scheme.css

diff --git a/book.toml b/book.toml
index 376dc9d..82c09a8 100644
--- a/book.toml
+++ b/book.toml
@@ -4,6 +4,7 @@ title = "The Amaranth RFC Book"
 [output.html]
 no-section-label = true
 git-repository-url = "https://github.com/amaranth-lang/rfcs"
+additional-css = ["theme/img-color-scheme.css"]
 
 [output.html.search]
 heading-split-level = 0
diff --git a/text/0049-soc-gpio-peripheral/overview.svg b/text/0049-soc-gpio-peripheral/overview.svg
index 27e50e3..067f06b 100644
--- a/text/0049-soc-gpio-peripheral/overview.svg
+++ b/text/0049-soc-gpio-peripheral/overview.svg
@@ -16,6 +16,16 @@
         src: url("https://excalidraw.com/Assistant-Regular.woff2");
       }
     </style>
-    
+    <style>
+      :root {
+        color: #1e1e1e;
+      }
+      @media (prefers-color-scheme: dark) {
+        :root {
+          color: #d3d3d3;
+        }
+      }
+    </style>
+
   </defs>
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diff --git a/text/0049-soc-gpio-peripheral/reg-input.svg b/text/0049-soc-gpio-peripheral/reg-input.svg
index 89ca4e9..3072fde 100644
--- a/text/0049-soc-gpio-peripheral/reg-input.svg
+++ b/text/0049-soc-gpio-peripheral/reg-input.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><rect width="100%" height="100%" fill="white"/><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="593" x2="593" y2="31"/><line x1="396" x2="396" y2="31"/><line x1="198" x2="198" y2="31"/></g><g><g/><g transform="translate(99,-11)"><g transform="translate(593)"><text y="6">0</text></g><g transform="translate(396)"><text y="6">1</text></g><g transform="translate(198)"><text y="6">2</text></g><g transform="translate(0)"><text y="6">3</text></g></g><g transform="translate(99,15)"><g transform="translate(593)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(99,39)"><g transform="translate(593)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>R</tspan></text></g></g></g></g></g></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style>@media(prefers-color-scheme:dark){:root{filter:invert(1)}}</style></defs><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="593" x2="593" y2="31"/><line x1="396" x2="396" y2="31"/><line x1="198" x2="198" y2="31"/></g><g><g/><g transform="translate(99,-11)"><g transform="translate(593)"><text y="6">0</text></g><g transform="translate(396)"><text y="6">1</text></g><g transform="translate(198)"><text y="6">2</text></g><g transform="translate(0)"><text y="6">3</text></g></g><g transform="translate(99,15)"><g transform="translate(593)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(99,39)"><g transform="translate(593)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>R</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>R</tspan></text></g></g></g></g></g></svg>
diff --git a/text/0049-soc-gpio-peripheral/reg-mode.svg b/text/0049-soc-gpio-peripheral/reg-mode.svg
index 7ec3abe..bbc548e 100644
--- a/text/0049-soc-gpio-peripheral/reg-mode.svg
+++ b/text/0049-soc-gpio-peripheral/reg-mode.svg
@@ -1 +1 @@
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+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style>@media(prefers-color-scheme:dark){:root{filter:invert(1)}}</style></defs><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="692" x2="692" y2="3"/><line x1="692" x2="692" y1="31" y2="28"/><line x1="593" x2="593" y2="31"/><line x1="494" x2="494" y2="3"/><line x1="494" x2="494" y1="31" y2="28"/><line x1="396" x2="396" y2="31"/><line x1="297" x2="297" y2="3"/><line x1="297" x2="297" y1="31" y2="28"/><line x1="198" x2="198" y2="31"/><line x1="99" x2="99" y2="3"/><line x1="99" x2="99" y1="31" y2="28"/></g><g><g/><g transform="translate(49,-11)"><g transform="translate(692)"><text y="6">0</text></g><g transform="translate(593)"><text y="6">1</text></g><g transform="translate(494)"><text y="6">2</text></g><g transform="translate(396)"><text y="6">3</text></g><g transform="translate(297)"><text y="6">4</text></g><g transform="translate(198)"><text y="6">5</text></g><g transform="translate(99)"><text y="6">6</text></g><g transform="translate(0)"><text y="6">7</text></g></g><g transform="translate(49,15)"><g transform="translate(643)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(49,39)"><g transform="translate(643)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>RW</tspan></text></g></g></g></g></g></svg>
diff --git a/text/0049-soc-gpio-peripheral/reg-output.svg b/text/0049-soc-gpio-peripheral/reg-output.svg
index 79bf26a..1254c67 100644
--- a/text/0049-soc-gpio-peripheral/reg-output.svg
+++ b/text/0049-soc-gpio-peripheral/reg-output.svg
@@ -1 +1 @@
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+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style>@media(prefers-color-scheme:dark){:root{filter:invert(1)}}</style></defs><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="593" x2="593" y2="31"/><line x1="396" x2="396" y2="31"/><line x1="198" x2="198" y2="31"/></g><g><g/><g transform="translate(99,-11)"><g transform="translate(593)"><text y="6">0</text></g><g transform="translate(396)"><text y="6">1</text></g><g transform="translate(198)"><text y="6">2</text></g><g transform="translate(0)"><text y="6">3</text></g></g><g transform="translate(99,15)"><g transform="translate(593)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(99,39)"><g transform="translate(593)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(396)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(198)"><text y="6"><tspan>RW</tspan></text></g><g transform="translate(0)"><text y="6"><tspan>RW</tspan></text></g></g></g></g></g></svg>
diff --git a/text/0049-soc-gpio-peripheral/reg-setclr.svg b/text/0049-soc-gpio-peripheral/reg-setclr.svg
index 353f7eb..117204a 100644
--- a/text/0049-soc-gpio-peripheral/reg-setclr.svg
+++ b/text/0049-soc-gpio-peripheral/reg-setclr.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><rect width="100%" height="100%" fill="white"/><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="692" x2="692" y2="3"/><line x1="692" x2="692" y1="31" y2="28"/><line x1="593" x2="593" y2="31"/><line x1="494" x2="494" y2="3"/><line x1="494" x2="494" y1="31" y2="28"/><line x1="396" x2="396" y2="31"/><line x1="297" x2="297" y2="3"/><line x1="297" x2="297" y1="31" y2="28"/><line x1="198" x2="198" y2="31"/><line x1="99" x2="99" y2="3"/><line x1="99" x2="99" y1="31" y2="28"/></g><g><g/><g transform="translate(49,-11)"><g transform="translate(692)"><text y="6">0</text></g><g transform="translate(593)"><text y="6">1</text></g><g transform="translate(494)"><text y="6">2</text></g><g transform="translate(396)"><text y="6">3</text></g><g transform="translate(297)"><text y="6">4</text></g><g transform="translate(198)"><text y="6">5</text></g><g transform="translate(99)"><text y="6">6</text></g><g transform="translate(0)"><text y="6">7</text></g></g><g transform="translate(49,15)"><g transform="translate(643)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(49,39)"><g transform="translate(643)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>W</tspan></text></g></g></g></g></g></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="70" viewBox="0 0 800 70" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style>@media(prefers-color-scheme:dark){:root{filter:invert(1)}}</style></defs><g transform="translate(0.5,0.5)" text-anchor="middle" font-size="14" font-family="sans-serif" font-weight="normal"><g transform="translate(4,21)"><g stroke="black" stroke-width="1" stroke-linecap="round"><line x2="791"/><line y2="31"/><line x2="791" y1="31" y2="31"/><line x1="791" x2="791" y2="31"/><line x1="692" x2="692" y2="3"/><line x1="692" x2="692" y1="31" y2="28"/><line x1="593" x2="593" y2="31"/><line x1="494" x2="494" y2="3"/><line x1="494" x2="494" y1="31" y2="28"/><line x1="396" x2="396" y2="31"/><line x1="297" x2="297" y2="3"/><line x1="297" x2="297" y1="31" y2="28"/><line x1="198" x2="198" y2="31"/><line x1="99" x2="99" y2="3"/><line x1="99" x2="99" y1="31" y2="28"/></g><g><g/><g transform="translate(49,-11)"><g transform="translate(692)"><text y="6">0</text></g><g transform="translate(593)"><text y="6">1</text></g><g transform="translate(494)"><text y="6">2</text></g><g transform="translate(396)"><text y="6">3</text></g><g transform="translate(297)"><text y="6">4</text></g><g transform="translate(198)"><text y="6">5</text></g><g transform="translate(99)"><text y="6">6</text></g><g transform="translate(0)"><text y="6">7</text></g></g><g transform="translate(49,15)"><g transform="translate(643)"><text y="6"><tspan>pin_0</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>pin_1</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>pin_2</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>pin_3</tspan></text></g></g><g transform="translate(49,39)"><g transform="translate(643)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(445)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(247)"><text y="6"><tspan>W</tspan></text></g><g transform="translate(49)"><text y="6"><tspan>W</tspan></text></g></g></g></g></g></svg>
diff --git a/theme/img-color-scheme.css b/theme/img-color-scheme.css
new file mode 100644
index 0000000..6a7169f
--- /dev/null
+++ b/theme/img-color-scheme.css
@@ -0,0 +1,10 @@
+.light, .rust {
+    img {
+        color-scheme: light;
+    }
+}
+.ayu, .coal, .navy {
+    img {
+        color-scheme: dark;
+    }
+}