utils

Documentation

Index

• func CalcMonoFontSize(ttFont *truetype.Font, spacing float64, textLines []string, ...) int
• func CreateFontContext(ttFont *truetype.Font, fontSize float64, clipRectangle image.Rectangle, ...) *freetype.Context
• func DrawString(fc *freetype.Context, ttFont *truetype.Font, fontSize float64, ...) error
• func HLine(img *image.RGBA, col color.Color, x1, y, x2 int)
• func ParseHexColor(s string) (c color.RGBA, err error)
• func ParseRGBA(rgba string) color.RGBA
• func Rect(img *image.RGBA, col color.Color, x1, y1, x2, y2 int)
• func TextHeight(fc *freetype.Context, size, spacing float64, lines []string) int
• func TextWidthInPixels(ttFont *truetype.Font, size float64, text string) int
• func VLine(img *image.RGBA, col color.Color, x, y1, y2 int)
• func WordWrap(text string, lineWidth int) (lines []string)

Functions

func CalcMonoFontSize

func CalcMonoFontSize(ttFont *truetype.Font, spacing float64, textLines []string, bounds image.Rectangle) int

CalcMonoFontSize calcula o tamanho maximo da fonte usada no bloco de texto para caber em bounds.

func CreateFontContext

func CreateFontContext(ttFont *truetype.Font, fontSize float64, clipRectangle image.Rectangle, canvas draw.Image, color color.Color) *freetype.Context

func DrawString

func DrawString(fc *freetype.Context, ttFont *truetype.Font, fontSize float64, clipRectangle image.Rectangle, alignment string, spacing float64, text []string, x, y int) error

DrawString calculates the widths and print to image

func HLine

func HLine(img *image.RGBA, col color.Color, x1, y, x2 int)

HLine draws a horizontal line

func ParseHexColor

func ParseHexColor(s string) (c color.RGBA, err error)

func ParseRGBA

func ParseRGBA(rgba string) color.RGBA

func Rect

func Rect(img *image.RGBA, col color.Color, x1, y1, x2, y2 int)

Rect draws a rectangle using HLine() and VLine()

func TextHeight

func TextHeight(fc *freetype.Context, size, spacing float64, lines []string) int

func TextWidthInPixels

func TextWidthInPixels(ttFont *truetype.Font, size float64, text string) int

func VLine

func VLine(img *image.RGBA, col color.Color, x, y1, y2 int)

VLine draws a vertical line

func WordWrap

func WordWrap(text string, lineWidth int) (lines []string)