Merge "feat(web/tvl): Check in first version of new TVL logo" into canon r/2910

1 files changed, 70 insertions, 0 deletions

diff --git a/web/tvl/logo/default.nix b/web/tvl/logo/default.nix
new file mode 100644
index 000000000000..cb09dc28ecfa
--- /dev/null
+++ b/web/tvl/logo/default.nix
@@ -0,0 +1,70 @@
+# Creates an output containing the logo in SVG format (animated and
+# static, one for each background colour) and without animations in
+# PNG.
+{ depot, lib, pkgs, ... }:
+
+let
+  palette = {
+    purple = "#CC99C9";
+    blue = "#9EC1CF";
+    green = "#9EE09E";
+    yellow = "#FDFD97";
+    orange = "#FEB144";
+    red = "#FF6663";
+  };
+
+  logoShapes = builtins.readFile ./logo-shapes.svg;
+  logoSvg = style: ''
+    <svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 2480 3508">
+      <style>${style}</style>
+      ${logoShapes}
+    </svg>
+  '';
+
+  staticCss = colour: ''
+    #armchair-background {
+      fill: ${colour};
+    }
+  '';
+
+  # Create an animated CSS that equally spreads out the colours over
+  # the animation duration (1min).
+  animatedCss = colours: let
+    # Calculate at which percentage offset each colour should appear.
+    stepSize = 100 / ((builtins.length colours) - 1);
+    frames = lib.imap0 (idx: colour: { inherit colour; at = idx * stepSize; }) colours;
+    frameCss = frame: "${toString frame.at}% { fill: ${frame.colour}; }";
+  in ''
+    #armchair-background {
+      animation: 60s infinite alternate armchairPalette;
+    }
+
+    @keyframes armchairPalette {
+    ${lib.concatStringsSep "\n" (map frameCss frames)}
+    }
+  '';
+
+in depot.nix.utils.drvTargets(lib.fix (self: {
+  inherit palette;
+
+  # Create a TVL logo SVG with the specified static armchair colour.
+  staticLogoSvg = colour: pkgs.writeText "logo.svg" (logoSvg (staticCss colour));
+
+  # Create a TVL logo SVG with the specified animated armchair colour set.
+  animatedLogoSvg = colours: pkgs.writeText "logo.svg" (logoSvg (animatedCss colours));
+
+  # Create a PNG of the TVL logo with the specified static armchair colour and DPI.
+  logoPng = colour: dpi: pkgs.runCommandNoCC "logo.png" {} ''
+    ${pkgs.inkscape}/bin/inkscape \
+      --export-area-drawing \
+      --export-background-opacity 0 \
+      --export-dpi ${toString dpi} \
+      ${self.staticLogoSvg colour} -o $out
+  '';
+
+  # Animated SVG logo with all colours.
+  pastelRainbow = self.animatedLogoSvg (lib.attrValues palette);
+}
+
+# Add individual outputs for static logos of each colour.
+// (lib.mapAttrs' (k: v: lib.nameValuePair "${k}Png" (self.logoPng v 96)) palette)))