23 lines
847 B
Swift
23 lines
847 B
Swift
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internal import CPlaydate
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extension Graphics {
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/// A page of glyphs within a font. Wraps `LCDFontPage`.
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/// Keep the font alive while using its pages.
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public struct FontPage {
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let pointer: OpaquePointer
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let font: Font
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/// The glyph for `codepoint` within this page, with its bitmap and advance.
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public func glyph(for codepoint: UInt32) -> (glyph: Glyph, bitmap: Bitmap?, advance: Int)? {
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var bitmap: OpaquePointer?
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var advance: Int32 = 0
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guard let glyph = gfx.pointee.getPageGlyph.unsafelyUnwrapped(pointer, codepoint, &bitmap, &advance) else {
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return nil
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}
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return (Glyph(pointer: glyph, font: font),
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bitmap.map { Bitmap(pointer: $0, isOwned: false) },
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Int(advance))
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}
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}
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}
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