mirror of
https://github.com/ghostty-org/ghostty.git
synced 2025-07-24 20:56:08 +03:00
7686cacde6
Significant rework that also removes a lot of unnecessarily duplicated work while rebuilding cells in both renderers. Fixes multiple issues with decorations and bg colors on wide chars and ligatures, while reducing the amount of special case handling required.
70 lines
2.3 KiB
Zig
70 lines
2.3 KiB
Zig
const builtin = @import("builtin");
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const options = @import("main.zig").options;
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const run = @import("shaper/run.zig");
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pub const noop = @import("shaper/noop.zig");
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pub const harfbuzz = @import("shaper/harfbuzz.zig");
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pub const coretext = @import("shaper/coretext.zig");
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pub const web_canvas = @import("shaper/web_canvas.zig");
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pub const Cache = @import("shaper/Cache.zig");
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pub const TextRun = run.TextRun;
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pub const RunIterator = run.RunIterator;
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/// Shaper implementation for our compile options.
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pub const Shaper = switch (options.backend) {
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.freetype,
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.fontconfig_freetype,
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.coretext_freetype,
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.coretext_harfbuzz,
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=> harfbuzz.Shaper,
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// Note that coretext_freetype cannot use the coretext
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// shaper because the coretext shaper requests CoreText
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// font faces.
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.coretext => coretext.Shaper,
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.coretext_noshape => noop.Shaper,
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.web_canvas => web_canvas.Shaper,
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};
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/// A cell is a single single within a terminal that should be rendered
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/// for a shaping call. Note all terminal cells may be present; only
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/// cells that have a glyph that needs to be rendered.
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pub const Cell = struct {
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/// The column that this cell occupies. Since a set of shaper cells is
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/// always on the same line, only the X is stored. It is expected the
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/// caller has access to the original screen cell.
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x: u16,
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/// An additional offset to apply to the rendering.
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x_offset: i16 = 0,
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y_offset: i16 = 0,
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/// The glyph index for this cell. The font index to use alongside
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/// this cell is available in the text run. This glyph index is only
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/// valid for a given GroupCache and FontIndex that was used to create
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/// the runs.
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glyph_index: u32,
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};
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/// Options for shapers.
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pub const Options = struct {
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/// Font features to use when shaping. These can be in the following
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/// formats: "-feat" "+feat" "feat". A "-"-prefix is used to disable
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/// a feature and the others are used to enable a feature. If a feature
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/// isn't supported or is invalid, it will be ignored.
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///
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/// Note: eventually, this will move to font.Face probably as we may
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/// want to support per-face feature configuration. For now, we only
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/// support applying features globally.
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features: []const []const u8 = &.{},
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};
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test {
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_ = Cache;
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_ = Shaper;
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// Always test noop
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_ = noop;
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}
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