drawing

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Versions in this module

v0

v0.1.8

Oct 31, 2026

v0.1.7

Oct 30, 2026

Changes in this version

+ func FallbackFontData(family string) ([]byte, bool)

+ func RegisterAlphaMaskSurfaceFactory(fn func(width, height float64, resolution geom.Resolution) AlphaMaskSurface) func(width, height float64, resolution geom.Resolution) AlphaMaskSurface

+ func RegisterFallbackFont(data []byte, family string, style FontStyle) error

+ func RegisterFallbackFontFactory(register func(data []byte, family string, style FontStyle) error, ...)

+ func RegisterFallbackFontUnregisterer(unregisterer func(family string) error)

+ func RegisterFontEngineFactory(fn func(doc *parser.Document) FontEngine) func(doc *parser.Document) FontEngine

+ func RegisterOffscreenSurfaceFactory(fn func(width, height float64, resolution geom.Resolution) OffscreenSurface) func(width, height float64, resolution geom.Resolution) OffscreenSurface

+ func RegisterPDFDocumentFactory(fn func(w io.Writer, options PDFOptions) (PDFDocument, error)) func(w io.Writer, options PDFOptions) (PDFDocument, error)

+ func RegisterSVGSceneFactory(fn imageasset.SVGParser) imageasset.SVGParser

+ func RegisterVectorSurfaceFactory(fn func(width, height float64, draw func(DrawContext)) VectorSurface) func(width, height float64, draw func(DrawContext)) VectorSurface

+ func RegisteredFallbackFamilies() []string

+ func SVGSceneFactory() imageasset.SVGParser

+ func UnregisterFallbackFont(family string) error

+ func VectorSurfaceFactory() func(width, height float64, draw func(DrawContext)) VectorSurface

+ type AlphaMaskSurface interface

+ DrawPath func(x, y float64, path *geom.Path)

+ RasterAlpha func() *image.Alpha

+ SetFillColor func(c color.Color)

+ func NewAlphaMaskSurface(width, height float64, resolution geom.Resolution) AlphaMaskSurface

type FontEngine

+ func NewFontEngine(doc *parser.Document) FontEngine

+ type OffscreenSurface = Backend

+ func NewOffscreenSurface(width, height float64, resolution geom.Resolution) OffscreenSurface

type PDFDocument

+ func NewPDFDocument(w io.Writer, options PDFOptions) (PDFDocument, error)

type PageLink

+ InComposite bool

+ ObjectID uint64

type PageOutline

+ URI string

type SVGScene

+ func ParseSVGScene(data []byte) (SVGScene, error)

type VectorSurface

+ func NewVectorSurface(width, height float64, draw func(DrawContext)) (VectorSurface, error)

v0.1.6

Oct 27, 2026

v0.1.5

Oct 21, 2026

Changes in this version

+ type DestType int

+ const DestFit

+ const DestFitH

+ const DestFitR

+ const DestFitV

+ const DestXYZ

type FontFace

+ VerticalMetrics func() (ascent float64, descent float64)

+ type LinkTarget struct

+ Bottom float64

+ Left float64

+ Name string

+ Page int

+ PageHeight float64

+ Right float64

+ Top float64

+ Type DestType

+ Zoom float64

type PDFDocument

+ AddOutlines func(outlines []PageOutline) error

+ type PageLink struct

+ Height float64

+ Target *LinkTarget

+ URI string

+ Width float64

+ X float64

+ Y float64

+ func (l PageLink) Rect(pageHeight float64) (x0, y0, x1, y1 float64)

+ type PageOutline struct

+ Level int

+ Target *LinkTarget

+ Title string

v0.1.4

Oct 4, 2026

Changes in this version

type DrawContext

+ Transform func(m geom.Matrix)

type FontEngine

+ Close func()

v0.1.3

Sep 24, 2026

Changes in this version

+ const BackendCanvas

+ const BackendDraw2D

+ const BackendFGG

+ const BackendFTGG

+ const BackendGG

+ const BackendTinySkia

+ func BackendNames() []string

+ func BackendPluginPath(name string) string

+ func JoinNames(names []string) string

+ func RegisterBackend(name string, factory BackendFactory) error

+ func RegisterOrReplaceBackend(name string, factory BackendFactory) error

+ func RegisteredBackends() []string

+ type Backend interface

+ Raster func() *image.RGBA

+ type BackendFactory func(width, height float64, resolution geom.Resolution) (Backend, error)

+ func LookupBackend(name string) (BackendFactory, bool)

+ type CTColor struct

+ Gradient geom.Gradient

+ HasValue bool

+ Value color.RGBA

+ type DrawContext interface

+ ClearFill func()

+ ClearStroke func()

+ CopyStrokeToFill func()

+ CurrentMatrix func() geom.Matrix

+ DrawImage func(img image.Image, x, y float64, dpmm float64)

+ DrawPath func(x, y float64, p *geom.Path)

+ Pop func()

+ Push func()

+ RenderImage func(img image.Image, m geom.Matrix)

+ Rotate func(deg float64)

+ Scale func(sx, sy float64)

+ SetDashes func(offset float64, dashes ...float64)

+ SetFillColor func(c color.Color)

+ SetFillGradient func(g geom.Gradient)

+ SetFillPaint func(paint geom.Paint)

+ SetFillRule func(rule geom.FillRule)

+ SetStrokeCapper func(cap geom.Capper)

+ SetStrokeColor func(c color.Color)

+ SetStrokeGradient func(g geom.Gradient)

+ SetStrokeJoiner func(join geom.Joiner)

+ SetStrokePaint func(paint geom.Paint)

+ SetStrokeWidth func(w float64)

+ StrokeCapper func() geom.Capper

+ StrokeJoiner func() geom.Joiner

+ StrokeWidth func() float64

+ TextPath func(p *geom.Path, x, y float64)

+ Translate func(x, y float64)

+ type FontEngine interface

+ FaceObject func(family FontFamily, object models.TextObject, fill *CTColor) FontFace

+ FallbackFontFamily func(id models.StRefID) string

+ HasLoadedEmbeddedFont func(id models.StRefID) bool

+ LoadFont func(id models.StRefID) (FontFamily, error)

+ RegisterPageGlyphs func(doc *parser.Document, page *parser.Page, content *models.PageContent)

+ RemoveFallbackFont func(family string)

+ RenderLock func(family FontFamily) *sync.Mutex

+ UseFallbackFont func(family string) error

+ type FontFace interface

+ DirectPath func(value string) *geom.Path

+ Fill func() geom.Paint

+ GlyphIndex func(r rune) uint16

+ IsCFF func() bool

+ ShapedRun func(value string) TextRun

+ Size func() float64

+ TextWidth func(value string) float64

+ ToPath func(value string) *geom.Path

+ type FontFamily interface

+ Name func() string

+ type FontStyle int

+ const FontBlack

+ const FontBold

+ const FontExtraBold

+ const FontExtraLight

+ const FontItalic

+ const FontLight

+ const FontMedium

+ const FontRegular

+ const FontSemiBold

+ const FontThin

+ func (s FontStyle) CSS() int

+ func (s FontStyle) Italic() bool

+ func (s FontStyle) Weight() FontStyle

+ type PDFDocument interface

+ AddPage func(page VectorSurface) error

+ Close func() error

+ type PDFOptions struct

+ Compress bool

+ LossyImages bool

+ SubsetFonts bool

+ type SVGScene interface

+ Height func() float64

+ Rasterize func(resolution geom.Resolution) image.Image

+ RenderVector func(ctx any, m geom.Matrix) bool

+ Width func() float64

+ type TextRun interface

+ type VectorSurface interface

+ Height func() float64

+ Rasterize func(resolution geom.Resolution) *image.RGBA

+ Width func() float64

+ Write func(w io.Writer, format string) error

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