now with color!

src/main.zig

@@ -35,9 +35,21 @@ pub fn main() !void {
 
     while (true) {
         try stdout.print("[", .{});
-        for (modules) |module| {
+        var bg = Color{ .r = 0.0, .g = 0.0, .b = 0.0 };
-            try json.stringify(try module.getJson(), .{ .emit_null_optional_fields = false }, stdout);
+        for (modules, 0..) |module, idx| {
+            _ = idx;
+            var output = try module.getJson();
+            output.full_text = try std.fmt.allocPrint(arena.allocator(), " {s} ", .{output.full_text});
+            output.background = try bg.getString(arena.allocator());
+            var color = bg.add(Color{ .r = 0.6, .g = 0.6, .b = 0.6 });
+            if (output.color == null) output.color = try color.getString(arena.allocator());
+            output.separator = false;
+            output.separator_block_width = 0;
+            try json.stringify(output, .{ .emit_null_optional_fields = false }, stdout);
             try stdout.print(",", .{});
+            bg.r += 0.025;
+            bg.g += 0.025;
+            bg.b += 0.025;
         }
         try stdout.print("],\n", .{});
 
@@ -46,3 +58,65 @@ pub fn main() !void {
         std.time.sleep(1000_000_000);
     }
 }
+
+pub const Color = struct {
+    r: f32,
+    g: f32,
+    b: f32,
+
+    pub fn init(string: []const u8) !Color {
+        var r = try std.fmt.parseInt(u8, string[1..2], 16);
+        var g = try std.fmt.parseInt(u8, string[3..4], 16);
+        var b = try std.fmt.parseInt(u8, string[5..6], 16);
+        return .{
+            .r = @as(f32, @floatFromInt(r)) / 255,
+            .g = @as(f32, @floatFromInt(g)) / 255,
+            .b = @as(f32, @floatFromInt(b)) / 255,
+        };
+    }
+
+    pub fn getString(self: *const Color, allocator: std.mem.Allocator) ![]const u8 {
+        const r = @as(u8, @intFromFloat(self.r * 255));
+        const g = @as(u8, @intFromFloat(self.g * 255));
+        const b = @as(u8, @intFromFloat(self.b * 255));
+        return try std.fmt.allocPrint(allocator, "#{s}{s}{s}", .{
+            std.fmt.fmtSliceHexLower(&[_]u8{r}),
+            std.fmt.fmtSliceHexLower(&[_]u8{g}),
+            std.fmt.fmtSliceHexLower(&[_]u8{b}),
+        });
+    }
+
+    pub fn add(a: *const Color, b: Color) Color {
+        return .{
+            .r = std.math.clamp(a.r + b.r, 0.0, 1.0),
+            .g = std.math.clamp(a.g + b.g, 0.0, 1.0),
+            .b = std.math.clamp(a.b + b.b, 0.0, 1.0),
+        };
+    }
+
+    pub fn mix(a: *const Color, b: Color, t: f32) Color {
+        return .{
+            .r = std.math.lerp(a.r, b.r, t),
+            .g = std.math.lerp(a.g, b.g, t),
+            .b = std.math.lerp(a.b, b.b, t),
+        };
+    }
+};
+
+pub fn getBgColor(idx: usize, override: ?[]const u8) []const u8 {
+    if (override) |o| return o;
+    return switch (idx % 2) {
+        0 => "#002b36",
+        1 => "#0e1b15",
+        else => "#002b36",
+    };
+}
+
+pub fn getFgColor(idx: usize, override: ?[]const u8) []const u8 {
+    if (override) |o| return o;
+    return switch (idx % 2) {
+        // 0 => "#93a1a1",
+        // 1 => "#d6c2d6",
+        else => "#",
+    };
+}

src/modules/loadavg.zig

@@ -25,5 +25,6 @@ pub fn getJson(module: *const Module) !Module.JSON {
 
     return .{
         .full_text = try std.fmt.allocPrint(self.module.allocator, "{d:0>1.2}", .{loadavg}),
+        .color = if (loadavg > 1.95) "#ff0000" else null,
     };
 }