kitepdf-native-renderer/io.github.yuroyami.kitepdf.nativerenderer/CoreGraphicsCanvas

CoreGraphicsCanvas

class CoreGraphicsCanvas(ctx: CGContextRef) : KiteCanvas

KiteCanvas backed by an iOS / macOS CGContextRef. Pure CoreGraphics: no Compose, no Skia. The natural choice for native iOS apps using UIKit or SwiftUI; pass the context from your custom UIView's drawRect: or the UIGraphicsImageRenderer.image { ctx in … } block straight in.

Pair with ApplePdfRasterizer for the "give me a PNG" headless use case.

Memory: every Core Foundation / Core Graphics ref we allocate (gradient, colour space, image, CFData) is paired with a release call. Nothing escapes. Kotlin/Native objects don't leak, and we never hand a CG ref to caller code.

Constructors

CoreGraphicsCanvas

constructor(ctx: CGContextRef)

Properties

resolvesGlyphOutlines

open val resolvesGlyphOutlines: Boolean

Functions

applySoftMask

open override fun applySoftMask(kind: SoftMask.Kind, maskBBox: Rectangle, maskCtm: Matrix, render: () -> Unit, renderMask: (KiteCanvas) -> Unit)

beginPage

open override fun beginPage(widthPt: Double, heightPt: Double, deviceCtm: Matrix)

beginTransparencyGroup

open override fun beginTransparencyGroup(bbox: Rectangle, ctm: Matrix, isolated: Boolean, knockout: Boolean, alpha: Double, blendMode: BlendMode)

drawGlyphs

open override fun drawGlyphs(glyphs: List<TextGlyph>, fontSize: Double, unitsPerEm: Int, hasOutlines: Boolean, fontSpec: FontSpec, textToDevice: Matrix, color: RgbColor, alpha: Double, blendMode: BlendMode)

drawImage

open override fun drawImage(image: ImageXObject, ctm: Matrix, alpha: Double)

endPage

open override fun endPage()

endTransparencyGroup

open override fun endTransparencyGroup()

fillPath

open override fun fillPath(path: KitePath, ctm: Matrix, color: RgbColor, evenOdd: Boolean, alpha: Double, blendMode: BlendMode)

fillShading

open override fun fillShading(shading: KiteShading, ctm: Matrix, clipPath: KitePath?, alpha: Double, blendMode: BlendMode)

popClip

open override fun popClip()

pushClip

open override fun pushClip(path: KitePath, ctm: Matrix, evenOdd: Boolean)

strokePath

open override fun strokePath(path: KitePath, ctm: Matrix, color: RgbColor, lineWidth: Double, alpha: Double, blendMode: BlendMode, dashArray: List<Double>?, dashPhase: Double, lineCap: Int, lineJoin: Int, miterLimit: Double)