draw

Documentation

Overview

Package draw use a backend and a layout object to draw glyphs on the ouput.

Index

• func DrawEmoji(font backend.Font, glyph backend.GID, extents backend.GlyphExtents, ...)
• type Context
  • func (ctx Context) CreateFirstLine(layout text.EngineLayout, textOverflow string, blockEllipsis pr.TaggedString, ...) backend.TextDrawing

Functions

func DrawEmoji

func DrawEmoji(font backend.Font, glyph backend.GID, extents backend.GlyphExtents,
	fontSize, x, y, xAdvance utils.Fl, dst backend.Canvas,
)

DrawEmoji loads and draws `glyph` onto `dst`. It may be used by backend implementations to render emojis.

Types

type Context

type Context struct {
	Output backend.Canvas         // where to draw the text
	Fonts  text.FontConfiguration // used to find fonts
}

func (Context) CreateFirstLine

func (ctx Context) CreateFirstLine(layout text.EngineLayout, textOverflow string, blockEllipsis pr.TaggedString, x, y, angle pr.Fl,
) backend.TextDrawing

CreateFirstLine create the text for the first line of [layout], starting at position `(x,y)`. It also register the fonts used with backend.Canvas.AddFont.