nixos config

modules/scripts/gtk-theme-set.sh

@@ -0,0 +1,119 @@
+#!/usr/bin/env bash
+# Regenerates GTK3/4 CSS + settings.ini to match the current Quickshell
+# theme (accent color + dark/light mode). These used to be static,
+# Nix-rebuild-only files (symlinked straight into the store) — this makes
+# them live-editable instead, the same way cursor.conf/display.conf work,
+# so the Theme picker can actually reach GTK apps like Thunar.
+set -euo pipefail
+
+accent="${1:?usage: gtk-theme-set <accent> <bg> <bgAlt> <fg> <fgDim> <border> <dark:1|0>}"
+bg="${2:?bg required}"
+bg_alt="${3:?bgAlt required}"
+fg="${4:?fg required}"
+fg_dim="${5:?fgDim required}"
+border="${6:?border required}"
+dark="${7:?dark required}"
+
+dir3="$HOME/.config/gtk-3.0"
+dir4="$HOME/.config/gtk-4.0"
+mkdir -p "$dir3" "$dir4"
+
+css_file=$(mktemp)
+cat > "$css_file" <<EOF
+/* Squared corners + accent colors, generated by gtk-theme-set from the
+   Quickshell Theme picker — GTK's CSS is a subset of real CSS: no
+   !important, and zero still needs a unit.
+
+   The @define-color block matters more than it looks: plain selector
+   overrides (window, .background, .view, ...) only get you so far —
+   Thunar's icon-view content area and sidebar tree view turned out to
+   pull their actual fill color from these named theme variables
+   internally, not from the generic background-color cascade. Verified
+   live: without redefining theme_base_color specifically, the sidebar
+   and file grid stayed white no matter how broad the selector list got. */
+@define-color theme_bg_color $bg;
+@define-color theme_base_color $bg;
+@define-color theme_fg_color $fg;
+@define-color theme_text_color $fg;
+@define-color theme_selected_bg_color $accent;
+@define-color theme_selected_fg_color $bg;
+@define-color borders $border;
+
+* {
+  border-radius: 0px;
+  -gtk-outline-radius: 0px;
+}
+window, .background, .view, iconview, treeview, treeview.view, list, row,
+notebook, notebook > stack, scrolledwindow, viewport {
+  background-color: $bg;
+  color: $fg;
+}
+iconview.cell, iconview text {
+  background-color: $bg;
+  color: $fg;
+}
+treeview.view:selected, row:selected, iconview:selected {
+  background-color: $accent;
+  color: $bg;
+}
+headerbar, .titlebar {
+  background-color: $bg_alt;
+  color: $fg;
+  border-color: $border;
+  box-shadow: none;
+}
+button {
+  border-color: $border;
+}
+button:hover {
+  background-color: $bg_alt;
+}
+selection, *:selected {
+  background-color: $accent;
+  color: $bg;
+}
+EOF
+
+cp "$css_file" "$dir3/gtk.css"
+cp "$css_file" "$dir4/gtk.css"
+rm -f "$css_file"
+
+prefer_dark="false"
+theme_name="Adwaita"
+icon_theme="Gruvbox-Plus-Light"
+if [ "$dark" = "1" ]; then
+    prefer_dark="true"
+    theme_name="Adwaita-dark"
+    icon_theme="Gruvbox-Plus-Dark"
+fi
+
+ini_file=$(mktemp)
+cat > "$ini_file" <<EOF
+[Settings]
+gtk-application-prefer-dark-theme=$prefer_dark
+gtk-theme-name=$theme_name
+gtk-icon-theme-name=$icon_theme
+gtk-font-name=Noto Sans, 10
+gtk-enable-animations=true
+EOF
+
+cp "$ini_file" "$dir3/settings.ini"
+cp "$ini_file" "$dir4/settings.ini"
+rm -f "$ini_file"
+
+# settings.ini alone isn't enough: GTK3 binds gtk-theme-name/icon-theme-name
+# to org.gnome.desktop.interface via GSettings whenever that schema and a
+# dconf backend are present (they are here — dconf-service was already
+# running), and that binding wins over settings.ini unconditionally. This
+# machine's dconf database had hard values left over (gtk-theme='Breeze',
+# icon-theme='breeze') that silently overrode every settings.ini edit —
+# which is why neither accent/dark-mode nor the Gruvbox icon switch ever
+# reached Thunar. Writing the same values to dconf keeps both sources in
+# sync so it doesn't matter which one GTK actually reads from.
+if command -v dconf >/dev/null 2>&1; then
+    color_scheme="default"
+    [ "$dark" = "1" ] && color_scheme="prefer-dark"
+    dconf write /org/gnome/desktop/interface/gtk-theme "'$theme_name'"
+    dconf write /org/gnome/desktop/interface/icon-theme "'$icon_theme'"
+    dconf write /org/gnome/desktop/interface/color-scheme "'$color_scheme'"
+fi