painter

Documentation

Index

• Constants
• func CachedFontFace(style fyne.TextStyle, opts *truetype.Options) font.Face
• func ClearFontCache()
• func GetAspect(img *canvas.Image) float32
• func PaintImage(img *canvas.Image, c fyne.Canvas, width, height int) image.Image
• func RenderedTextSize(text string, size int, style fyne.TextStyle) fyne.Size
• func SvgCacheMonitorTheme()

Constants

const TextDPI = 78

TextDPI is a global constant that determines how text scales to interface sizes

Functions

func CachedFontFace

func CachedFontFace(style fyne.TextStyle, opts *truetype.Options) font.Face

CachedFontFace returns a font face held in memory. These are loaded from the current theme.

func ClearFontCache

func ClearFontCache()

ClearFontCache is used to remove cached fonts in the case that we wish to re-load font faces

func GetAspect

func GetAspect(img *canvas.Image) float32

GetAspect looks up an aspect ratio of an image

func PaintImage

func PaintImage(img *canvas.Image, c fyne.Canvas, width, height int) image.Image

PaintImage renders a given fyne Image to a Go standard image

func RenderedTextSize

func RenderedTextSize(text string, size int, style fyne.TextStyle) fyne.Size

RenderedTextSize looks up how bit a string would be if drawn on screen

func SvgCacheMonitorTheme

func SvgCacheMonitorTheme()

SvgCacheMonitorTheme hooks up the SVG cache to listen for theme changes and resets the cache