feat: finish ghostty pane backend integration

1 files changed, 287 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/pkg/macos/text/font_descriptor.zig b/vendor/libghostty-vt/pkg/macos/text/font_descriptor.zig
new file mode 100644
index 00000000..563165bc
--- /dev/null
+++ b/vendor/libghostty-vt/pkg/macos/text/font_descriptor.zig
@@ -0,0 +1,287 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const foundation = @import("../foundation.zig");
+const c = @import("c.zig").c;
+
+pub const FontDescriptor = opaque {
+    pub fn createWithNameAndSize(name: *foundation.String, size: f64) Allocator.Error!*FontDescriptor {
+        return @as(
+            ?*FontDescriptor,
+            @ptrFromInt(@intFromPtr(c.CTFontDescriptorCreateWithNameAndSize(@ptrCast(name), size))),
+        ) orelse Allocator.Error.OutOfMemory;
+    }
+
+    pub fn createWithAttributes(dict: *foundation.Dictionary) Allocator.Error!*FontDescriptor {
+        return @as(
+            ?*FontDescriptor,
+            @ptrFromInt(@intFromPtr(c.CTFontDescriptorCreateWithAttributes(@ptrCast(dict)))),
+        ) orelse Allocator.Error.OutOfMemory;
+    }
+
+    pub fn createCopyWithAttributes(
+        original: *FontDescriptor,
+        dict: *foundation.Dictionary,
+    ) Allocator.Error!*FontDescriptor {
+        return @as(
+            ?*FontDescriptor,
+            @ptrFromInt(@intFromPtr(c.CTFontDescriptorCreateCopyWithAttributes(
+                @ptrCast(original),
+                @ptrCast(dict),
+            ))),
+        ) orelse Allocator.Error.OutOfMemory;
+    }
+
+    pub fn createCopyWithVariation(
+        original: *FontDescriptor,
+        id: *foundation.Number,
+        value: f64,
+    ) Allocator.Error!*FontDescriptor {
+        return @as(
+            ?*FontDescriptor,
+            @ptrCast(@constCast(c.CTFontDescriptorCreateCopyWithVariation(
+                @ptrCast(original),
+                @ptrCast(id),
+                value,
+            ))),
+        ) orelse Allocator.Error.OutOfMemory;
+    }
+
+    pub fn retain(self: *FontDescriptor) void {
+        _ = c.CFRetain(self);
+    }
+
+    pub fn release(self: *FontDescriptor) void {
+        c.CFRelease(self);
+    }
+
+    pub fn copyAttribute(self: *const FontDescriptor, comptime attr: FontAttribute) ?attr.Value() {
+        return @ptrFromInt(@intFromPtr(c.CTFontDescriptorCopyAttribute(
+            @ptrCast(self),
+            @ptrCast(attr.key()),
+        )));
+    }
+
+    pub fn copyAttributes(self: *const FontDescriptor) *foundation.Dictionary {
+        return @ptrFromInt(@intFromPtr(c.CTFontDescriptorCopyAttributes(
+            @ptrCast(self),
+        )));
+    }
+};
+
+pub const FontAttribute = enum {
+    url,
+    name,
+    display_name,
+    family_name,
+    style_name,
+    traits,
+    variation,
+    size,
+    matrix,
+    cascade_list,
+    character_set,
+    languages,
+    baseline_adjust,
+    macintosh_encodings,
+    features,
+    feature_settings,
+    fixed_advance,
+    orientation,
+    format,
+    registration_scope,
+    priority,
+    enabled,
+    downloadable,
+    downloaded,
+
+    // https://developer.apple.com/documentation/coretext/core_text_constants?language=objc
+    variation_axes,
+
+    pub fn key(self: FontAttribute) *foundation.String {
+        return @as(*foundation.String, @ptrFromInt(@intFromPtr(switch (self) {
+            .url => c.kCTFontURLAttribute,
+            .name => c.kCTFontNameAttribute,
+            .display_name => c.kCTFontDisplayNameAttribute,
+            .family_name => c.kCTFontFamilyNameAttribute,
+            .style_name => c.kCTFontStyleNameAttribute,
+            .traits => c.kCTFontTraitsAttribute,
+            .variation => c.kCTFontVariationAttribute,
+            .size => c.kCTFontSizeAttribute,
+            .matrix => c.kCTFontMatrixAttribute,
+            .cascade_list => c.kCTFontCascadeListAttribute,
+            .character_set => c.kCTFontCharacterSetAttribute,
+            .languages => c.kCTFontLanguagesAttribute,
+            .baseline_adjust => c.kCTFontBaselineAdjustAttribute,
+            .macintosh_encodings => c.kCTFontMacintoshEncodingsAttribute,
+            .features => c.kCTFontFeaturesAttribute,
+            .feature_settings => c.kCTFontFeatureSettingsAttribute,
+            .fixed_advance => c.kCTFontFixedAdvanceAttribute,
+            .orientation => c.kCTFontOrientationAttribute,
+            .format => c.kCTFontFormatAttribute,
+            .registration_scope => c.kCTFontRegistrationScopeAttribute,
+            .priority => c.kCTFontPriorityAttribute,
+            .enabled => c.kCTFontEnabledAttribute,
+            .downloadable => c.kCTFontDownloadableAttribute,
+            .downloaded => c.kCTFontDownloadedAttribute,
+            .variation_axes => c.kCTFontVariationAxesAttribute,
+        })));
+    }
+
+    pub fn Value(comptime self: FontAttribute) type {
+        return switch (self) {
+            .url => *foundation.URL,
+            .name => *foundation.String,
+            .display_name => *foundation.String,
+            .family_name => *foundation.String,
+            .style_name => *foundation.String,
+            .traits => *foundation.Dictionary,
+            .variation => *foundation.Dictionary,
+            .size => *foundation.Number,
+            .matrix => *anyopaque, // CFDataRef
+            .cascade_list => *foundation.Array,
+            .character_set => *anyopaque, // CFCharacterSetRef
+            .languages => *foundation.Array,
+            .baseline_adjust => *foundation.Number,
+            .macintosh_encodings => *foundation.Number,
+            .features => *foundation.Array,
+            .feature_settings => *foundation.Array,
+            .fixed_advance => *foundation.Number,
+            .orientation => *foundation.Number,
+            .format => *foundation.Number,
+            .registration_scope => *foundation.Number,
+            .priority => *foundation.Number,
+            .enabled => *foundation.Number,
+            .downloadable => *anyopaque, // CFBoolean
+            .downloaded => *anyopaque, // CFBoolean
+            .variation_axes => *foundation.Array,
+        };
+    }
+};
+
+pub const FontTraitKey = enum {
+    symbolic,
+    weight,
+    width,
+    slant,
+
+    pub fn key(self: FontTraitKey) *foundation.String {
+        return @as(*foundation.String, @ptrFromInt(@intFromPtr(switch (self) {
+            .symbolic => c.kCTFontSymbolicTrait,
+            .weight => c.kCTFontWeightTrait,
+            .width => c.kCTFontWidthTrait,
+            .slant => c.kCTFontSlantTrait,
+        })));
+    }
+
+    pub fn Value(self: FontTraitKey) type {
+        return switch (self) {
+            .symbolic => *foundation.Number,
+            .weight => *foundation.Number,
+            .width => *foundation.Number,
+            .slant => *foundation.Number,
+        };
+    }
+};
+
+// https://developer.apple.com/documentation/coretext/ctfont/font_variation_axis_dictionary_keys?language=objc
+pub const FontVariationAxisKey = enum {
+    identifier,
+    minimum_value,
+    maximum_value,
+    default_value,
+    name,
+    hidden,
+
+    pub fn key(self: FontVariationAxisKey) *foundation.String {
+        return @as(*foundation.String, @ptrFromInt(@intFromPtr(switch (self) {
+            .identifier => c.kCTFontVariationAxisIdentifierKey,
+            .minimum_value => c.kCTFontVariationAxisMinimumValueKey,
+            .maximum_value => c.kCTFontVariationAxisMaximumValueKey,
+            .default_value => c.kCTFontVariationAxisDefaultValueKey,
+            .name => c.kCTFontVariationAxisNameKey,
+            .hidden => c.kCTFontVariationAxisHiddenKey,
+        })));
+    }
+
+    pub fn Value(comptime self: FontVariationAxisKey) type {
+        return switch (self) {
+            .identifier => foundation.Number,
+            .minimum_value => foundation.Number,
+            .maximum_value => foundation.Number,
+            .default_value => foundation.Number,
+            .name => foundation.String,
+            .hidden => foundation.Number,
+        };
+    }
+};
+
+pub const FontSymbolicTraits = packed struct(u32) {
+    italic: bool = false,
+    bold: bool = false,
+    _unused1: u3 = 0,
+    expanded: bool = false,
+    condensed: bool = false,
+    _unused2: u3 = 0,
+    monospace: bool = false,
+    vertical: bool = false,
+    ui_optimized: bool = false,
+    color_glyphs: bool = false,
+    composite: bool = false,
+    _padding: u17 = 0,
+
+    pub fn init(num: *foundation.Number) FontSymbolicTraits {
+        var raw: i32 = undefined;
+        _ = num.getValue(.sint32, &raw);
+        return @as(FontSymbolicTraits, @bitCast(raw));
+    }
+
+    test {
+        try std.testing.expectEqual(
+            @bitSizeOf(c.CTFontSymbolicTraits),
+            @bitSizeOf(FontSymbolicTraits),
+        );
+    }
+
+    test "bitcast" {
+        const actual: c.CTFontSymbolicTraits = c.kCTFontTraitMonoSpace | c.kCTFontTraitExpanded;
+        const expected: FontSymbolicTraits = .{
+            .monospace = true,
+            .expanded = true,
+        };
+
+        try std.testing.expectEqual(actual, @as(c.CTFontSymbolicTraits, @bitCast(expected)));
+    }
+
+    test "number" {
+        const raw: i32 = c.kCTFontTraitMonoSpace | c.kCTFontTraitExpanded;
+        const num = try foundation.Number.create(.sint32, &raw);
+        defer num.release();
+
+        const expected: FontSymbolicTraits = .{ .monospace = true, .expanded = true };
+        const actual = FontSymbolicTraits.init(num);
+        try std.testing.expect(std.meta.eql(expected, actual));
+    }
+};
+
+test {
+    @import("std").testing.refAllDecls(@This());
+}
+
+test "descriptor" {
+    const testing = std.testing;
+
+    const name = try foundation.String.createWithBytes("foo", .utf8, false);
+    defer name.release();
+
+    const v = try FontDescriptor.createWithNameAndSize(name, 12);
+    defer v.release();
+
+    const copy_name = v.copyAttribute(.name).?;
+    defer copy_name.release();
+
+    {
+        var buf: [128]u8 = undefined;
+        const cstr = copy_name.cstring(&buf, .utf8).?;
+        try testing.expectEqualStrings("foo", cstr);
+    }
+}