imageutil

package

v0.2.0 Latest Latest Go to latest Published: Aug 9, 2024 License: MIT Imports: 11 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
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Repository

github.com/ArtificialLegacy/imgscal

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Documentation ¶

Index ¶

Variables
func ConvertColor(model ColorModel, red, green, blue, alpha int) (int, int, int, int)
func CopyImage(src image.Image, model ColorModel) image.Image
func Decode(r io.Reader, encoding ImageEncoding) (image.Image, error)
func Draw(base image.Image, sub image.Image, x, y, width, height int)
func Encode(w io.Writer, img image.Image, encoding ImageEncoding) error
func EncodingExtension(encoding ImageEncoding) string
func NewImage(width, height int, model ColorModel) image.Image
func PointToTable(state *golua.LState, p image.Point) *golua.LTable
func RGBAToTable(state *golua.LState, rgba *color.RGBA) *golua.LTable
func Set(img image.Image, x, y, red, green, blue, alpha int)
func SubImage(img image.Image, x1, y1, x2, y2 int, copy bool) image.Image
func TableToPoint(state *golua.LState, t *golua.LTable) image.Point
func TableToRGBA(state *golua.LState, t *golua.LTable) *color.RGBA
type ColorModel
- func Limit(img image.Image, model ColorModel) (image.Image, ColorModel)
type ImageEncoding
- func ExtensionEncoding(ext string) ImageEncoding
type PNGChunkStripper
- func (r *PNGChunkStripper) Read(p []byte) (int, error)

Constants ¶

This section is empty.

Variables ¶

View Source

var EncodingList = []ImageEncoding{
	ENCODING_PNG,
	ENCODING_JPEG,
	ENCODING_GIF,
	ENCODING_UNKNOWN,
}

View Source

var ModelList = []ColorModel{
	MODEL_RGBA,
	MODEL_RGBA64,
	MODEL_NRGBA,
	MODEL_NRGBA64,
	MODEL_ALPHA,
	MODEL_ALPHA16,
	MODEL_GRAY,
	MODEL_GRAY16,
	MODEL_CMYK,
}

Functions ¶

func ConvertColor ¶

func ConvertColor(model ColorModel, red, green, blue, alpha int) (int, int, int, int)

func CopyImage ¶

func CopyImage(src image.Image, model ColorModel) image.Image

func Decode ¶

func Decode(r io.Reader, encoding ImageEncoding) (image.Image, error)

func Draw ¶

func Draw(base image.Image, sub image.Image, x, y, width, height int)

func Encode ¶

func Encode(w io.Writer, img image.Image, encoding ImageEncoding) error

func EncodingExtension ¶

func EncodingExtension(encoding ImageEncoding) string

func NewImage ¶

func NewImage(width, height int, model ColorModel) image.Image

func PointToTable ¶

func PointToTable(state *golua.LState, p image.Point) *golua.LTable

func RGBAToTable ¶

func RGBAToTable(state *golua.LState, rgba *color.RGBA) *golua.LTable

func Set ¶

func Set(img image.Image, x, y, red, green, blue, alpha int)

func SubImage ¶

func SubImage(img image.Image, x1, y1, x2, y2 int, copy bool) image.Image

func TableToPoint ¶

func TableToPoint(state *golua.LState, t *golua.LTable) image.Point

func TableToRGBA ¶

func TableToRGBA(state *golua.LState, t *golua.LTable) *color.RGBA

Types ¶

type ColorModel ¶

type ColorModel int

const (
	MODEL_RGBA ColorModel = iota
	MODEL_RGBA64
	MODEL_NRGBA
	MODEL_NRGBA64
	MODEL_ALPHA
	MODEL_ALPHA16
	MODEL_GRAY
	MODEL_GRAY16
	MODEL_CMYK
)

func Limit ¶

func Limit(img image.Image, model ColorModel) (image.Image, ColorModel)

type ImageEncoding ¶

type ImageEncoding int

const (
	ENCODING_PNG ImageEncoding = iota
	ENCODING_JPEG
	ENCODING_GIF
	ENCODING_UNKNOWN
)

func ExtensionEncoding ¶

func ExtensionEncoding(ext string) ImageEncoding

type PNGChunkStripper ¶

type PNGChunkStripper struct {
	Reader io.Reader

	ErrList []error
	// contains filtered or unexported fields
}

func (*PNGChunkStripper) Read ¶

func (r *PNGChunkStripper) Read(p []byte) (int, error)

Source Files ¶

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