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This commit is contained in:
Tae Won Ha 2020-02-10 20:21:23 +01:00
parent accd19616b
commit 4d1887c0e2
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GPG Key ID: E40743465B5B8B44
1 changed files with 31 additions and 58 deletions
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89
NvimView/NvimView/AttributesRunDrawer.swift
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@ -8,21 +8,15 @@ import Cocoa
final class AttributesRunDrawer {
var font: NSFont {
didSet {
self.updateFontMetrics()
}
didSet { self.updateFontMetrics() }
}
var linespacing: CGFloat {
didSet {
self.updateFontMetrics()
}
didSet { self.updateFontMetrics() }
}
var characterspacing: CGFloat {
didSet {
self.updateFontMetrics()
}
didSet { self.updateFontMetrics() }
}
var usesLigatures: Bool
@ -76,24 +70,12 @@ final class AttributesRunDrawer {
context.saveGState()
defer { context.restoreGState() }
self.draw(
backgroundFor: run,
with: defaultAttributes,
in: context
)
self.draw(backgroundFor: run, with: defaultAttributes, in: context)
context.setFillColor(
ColorUtils.cgColorIgnoringAlpha(run.attrs.effectiveForeground)
)
context.setFillColor(ColorUtils.cgColorIgnoringAlpha(run.attrs.effectiveForeground))
fontGlyphRuns.forEach { run in
CTFontDrawGlyphs(
run.font,
run.glyphs,
run.positions,
run.glyphs.count,
context
)
CTFontDrawGlyphs(run.font, run.glyphs, run.positions, run.glyphs.count, context)
}
if run.attrs.fontTrait.contains(.underline) {
@ -109,25 +91,22 @@ final class AttributesRunDrawer {
}
}
private func drawUnderline(in context: CGContext,
fontGlyphRuns: [FontGlyphRun]) {
guard let lastPosition = fontGlyphRuns.last?.positions.last?.x else {
return
}
private func drawUnderline(in context: CGContext, fontGlyphRuns: [FontGlyphRun]) {
guard let lastPosition = fontGlyphRuns.last?.positions.last?.x else { return }
let x1 = lastPosition + self.cellSize.width
let x0 = fontGlyphRuns[0].positions[0].x
let y0 = fontGlyphRuns[0].positions[0].y
CGRect(x: x0, y: y0 + self.underlinePosition,
width: x1 - x0, height: self.underlineThickness).fill()
CGRect(
x: x0,
y: y0 + self.underlinePosition,
width: x1 - x0,
height: self.underlineThickness
).fill()
}
private func drawUndercurl(in context: CGContext,
fontGlyphRuns: [FontGlyphRun],
color: CGColor) {
guard let lastPosition = fontGlyphRuns.last?.positions.last?.x else {
return
}
private func drawUndercurl(in context: CGContext, fontGlyphRuns: [FontGlyphRun], color: CGColor) {
guard let lastPosition = fontGlyphRuns.last?.positions.last?.x else { return }
let x1 = lastPosition + self.cellSize.width
var x0 = fontGlyphRuns[0].positions[0].x
@ -138,12 +117,16 @@ final class AttributesRunDrawer {
context.move(to: CGPoint(x: x0, y: y0))
for _ in (0..<count) {
context.addCurve(to: CGPoint(x: x0 + 0.5 * w, y: y0 + h),
control1: CGPoint(x: x0 + 0.25 * w, y: y0),
control2: CGPoint(x: x0 + 0.25 * w, y: y0 + h))
context.addCurve(to: CGPoint(x: x0 + w, y: y0),
control1: CGPoint(x: x0 + 0.75 * w, y: y0 + h),
control2: CGPoint(x: x0 + 0.75 * w, y: y0))
context.addCurve(
to: CGPoint(x: x0 + 0.5 * w, y: y0 + h),
control1: CGPoint(x: x0 + 0.25 * w, y: y0),
control2: CGPoint(x: x0 + 0.25 * w, y: y0 + h)
)
context.addCurve(
to: CGPoint(x: x0 + w, y: y0),
control1: CGPoint(x: x0 + 0.75 * w, y: y0 + h),
control2: CGPoint(x: x0 + 0.75 * w, y: y0)
)
x0 += w
}
context.setStrokeColor(color)
@ -155,7 +138,6 @@ final class AttributesRunDrawer {
with defaultAttributes: CellAttributes,
`in` context: CGContext
) {
if run.attrs.effectiveBackground == defaultAttributes.background { return }
context.saveGState()
@ -169,19 +151,12 @@ final class AttributesRunDrawer {
height: self.cellSize.height
)
context.setFillColor(
ColorUtils.cgColorIgnoringAlpha(run.attrs.effectiveBackground)
)
context.setFillColor(ColorUtils.cgColorIgnoringAlpha(run.attrs.effectiveBackground))
context.fill(backgroundRect)
}
private func fontGlyphRuns(
from attrsRun: AttributesRun,
offset: CGPoint
) -> [FontGlyphRun] {
let font = FontUtils.font(
adding: attrsRun.attrs.fontTrait, to: self.font
)
private func fontGlyphRuns(from attrsRun: AttributesRun, offset: CGPoint) -> [FontGlyphRun] {
let font = FontUtils.font(adding: attrsRun.attrs.fontTrait, to: self.font)
let typesetFunction = self.usesLigatures
? self.typesetter.fontGlyphRunsWithLigatures
@ -190,9 +165,7 @@ final class AttributesRunDrawer {
let fontGlyphRuns = typesetFunction(
attrsRun.cells.map { Array($0.string.utf16) },
attrsRun.cells.startIndex,
CGPoint(
x: offset.x, y: attrsRun.location.y + self.baselineOffset
),
CGPoint(x: offset.x, y: attrsRun.location.y + self.baselineOffset),
font,
self.cellSize.width
)