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font/sprite: add regression test for cursor-height metric

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Qwerasd
2026-07-06 15:42:14 -04:00
parent dac341cad5
commit e8f3f6c438
1 changed files with 86 additions and 0 deletions
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86
src/font/sprite/Face.zig
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@@ -565,6 +565,92 @@ test "sprite face render all sprites" {
try std.testing.expect(!diff); // There should be no diffs from reference.
}
test "full height cursor sprites respect cursor height metric" {
const testing = std.testing;
const alloc = testing.allocator;
var atlas: font.Atlas = try .init(alloc, 128, .grayscale);
defer atlas.deinit(alloc);
// face with a 8x16 cell dimension.
var face: Face = .{
.metrics = .calc(.{
// Fudged number, not used in anything we care about here.
.px_per_em = 16,
.cell_width = 8.0,
.ascent = 12.0,
.descent = -4.0,
.line_gap = 0.0,
}),
};
try testing.expectEqual(16, face.metrics.cell_height);
// --- smaller than cell height ---
face.metrics.cursor_height = 12;
// bar
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_bar), .{ .grid_metrics = face.metrics });
try testing.expectEqual(12, glyph.height);
try testing.expectEqual(14, glyph.offset_y);
}
// rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(12, glyph.height);
try testing.expectEqual(14, glyph.offset_y);
}
// hollow rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_hollow_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(12, glyph.height);
try testing.expectEqual(14, glyph.offset_y);
}
// --- equal to the cell height ---
face.metrics.cursor_height = 16;
// bar
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_bar), .{ .grid_metrics = face.metrics });
try testing.expectEqual(16, glyph.height);
try testing.expectEqual(16, glyph.offset_y);
}
// rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(16, glyph.height);
try testing.expectEqual(16, glyph.offset_y);
}
// hollow rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_hollow_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(16, glyph.height);
try testing.expectEqual(16, glyph.offset_y);
}
// --- greater than the cell height ---
face.metrics.cursor_height = 20;
// bar
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_bar), .{ .grid_metrics = face.metrics });
try testing.expectEqual(20, glyph.height);
try testing.expectEqual(18, glyph.offset_y);
}
// rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(20, glyph.height);
try testing.expectEqual(18, glyph.offset_y);
}
// hollow rect
{
const glyph = try face.renderGlyph(alloc, &atlas, @intFromEnum(Sprite.cursor_hollow_rect), .{ .grid_metrics = face.metrics });
try testing.expectEqual(20, glyph.height);
try testing.expectEqual(18, glyph.offset_y);
}
}
// test "sprite face print all sprites" {
// std.debug.print("\n\n", .{});
// inline for (ranges) |range| {