Puranjay Savar Mattas
6e1ffb96fd
Convert from git submodule to plain vendored copy. No push access to upstream nodes-app/swift-markdown-engine meant our local fix commit (05c1720) was stranded and unreachable from any remote on fresh clones/CI. Vendoring as plain files folds it into normal repo history instead.
36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
//
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// TaskCheckboxGeometry.swift
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// MarkdownEngine
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//
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// Created by Luca Chen on 09.07.26.
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//
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// Shared geometry for the drawn task-checkbox square. The hidden `[ ] ` chars
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// are collapsed to ~zero advance by the styler, so `drawPosition`/
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// `boundingRect` of the box range sit at the task CONTENT's left edge. The
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// square is right-aligned to that edge with a small gap (Obsidian-style),
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// occupying the `- ` marker slot. Fragment draw and click hit-test both use
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// these functions so their rects can't drift apart.
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//
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import AppKit
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enum TaskCheckboxGeometry {
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/// Gap between the box's right edge and the task content's left edge.
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static let gap: CGFloat = 2.0
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/// Side length of the square for the given (body) font.
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static func size(for font: NSFont) -> CGFloat {
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let ascent = max(0, font.ascender)
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let descent = max(0, -font.descender)
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let fontHeight = max(1, ceil(ascent + descent))
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let markerWidth = ("[ ]" as NSString).size(withAttributes: [.font: font]).width
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return max(1.0, min(floor(fontHeight * 1.2), floor(markerWidth * 1.2)))
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}
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/// Left edge of the square: right-aligned to the content start x with `gap`.
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static func boxX(contentX: CGFloat, size: CGFloat) -> CGFloat {
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contentX - size - gap
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}
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}
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