1146e2f0

Add text comparison layout helpers

a73x 2026-04-09 08:17

Commit message

Add text comparison layout helpers

src/main.zig

+    return terminal_dirty or window_dirty or forced;
+const ComparisonVariant = struct {
+    label: []const u8,
+    coverage: [2]f32,
+};
+fn comparisonVariants() [4]ComparisonVariant {
+    return .{
+        .{ .label = "baseline", .coverage = renderer.coverageVariantParams(.baseline) },
+        .{ .label = "mild", .coverage = renderer.coverageVariantParams(.mild) },
+        .{ .label = "medium", .coverage = renderer.coverageVariantParams(.medium) },
+        .{ .label = "crisp", .coverage = renderer.coverageVariantParams(.crisp) },
+    };
+}
+fn comparisonSpecimenLines() []const []const u8 {
+    return &.{
+        "abcdefghijklmnopqrstuvwxyz",
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+        "0123456789",
+        "{}[]()/\\|,.;:_-=+",
+        "~/code/rad/waystty $ zig build test",
+    };
+}
+fn comparisonPanelOrigins(panel_count: usize, panel_cols: u32, top_margin_rows: u32) [4][2]f32 {
+    var origins = [_][2]f32{.{ 0.0, @floatFromInt(top_margin_rows) }} ** 4;
+    const count = @min(panel_count, origins.len);
+    var idx: usize = 0;
+    while (idx < count) : (idx += 1) {
+        origins[idx] = .{
+            @floatFromInt(idx * @as(usize, panel_cols)),
+            @floatFromInt(top_margin_rows),
+        };
+    }
+    return origins;
+}
+const RowRefreshState = enum {
+    full,
+    partial,
+    try std.testing.expectEqual(@as(f32, -3.0), glyphTopOffset(9, 12));
+test "comparisonPanelOrigins splits four panels left to right" {
+    const origins = comparisonPanelOrigins(4, 80, 24);
+    try std.testing.expectEqual(@as(f32, 0), origins[0][0]);
+    try std.testing.expect(origins[1][0] > origins[0][0]);
+    try std.testing.expect(origins[2][0] > origins[1][0]);
+    try std.testing.expect(origins[3][0] > origins[2][0]);
+}
+test "comparisonSpecimenLines remains fixed and non-empty" {
+    const lines = comparisonSpecimenLines();
+    try std.testing.expectEqual(@as(usize, 5), lines.len);
+    try std.testing.expectEqualStrings("abcdefghijklmnopqrstuvwxyz", lines[0]);
+    try std.testing.expectEqualStrings("ABCDEFGHIJKLMNOPQRSTUVWXYZ", lines[1]);
+    try std.testing.expectEqualStrings("0123456789", lines[2]);
+    try std.testing.expectEqualStrings("{}[]()/\\|,.;:_-=+", lines[3]);
+    try std.testing.expectEqualStrings("~/code/rad/waystty $ zig build test", lines[4]);
+    for (lines) |line| {
+        try std.testing.expect(line.len > 0);
+    }
+}
+fn runRenderSmokeTest(alloc: std.mem.Allocator) !void {
+    var conn = try wayland_client.Connection.init();
+    defer conn.deinit();