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73 lines
2.5 KiB
Zig
73 lines
2.5 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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///
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/// If this is null then this is an empty cell. If there are styles
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/// then those should be applied but there is no glyph to render.
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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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