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Version: v2.22.1 Latest Latest
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Published: Jun 6, 2022 License: Apache-2.0 Imports: 11 Imported by: 0

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Constants

This section is empty.

Variables

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var ErrUnsupportedFormat = errors.New("unsupported image format")

ErrUnsupportedFormat means the given image format is not supported.

Functions

This section is empty.

Types

type Format

type Format int

Format is an image file format.

ENUM( jpeg png gif tiff bmp )

const (
	// FormatJpeg is a Format of type Jpeg
	FormatJpeg Format = iota
	// FormatPng is a Format of type Png
	FormatPng
	// FormatGif is a Format of type Gif
	FormatGif
	// FormatTiff is a Format of type Tiff
	FormatTiff
	// FormatBmp is a Format of type Bmp
	FormatBmp
)

func ParseFormat

func ParseFormat(name string) (Format, error)

ParseFormat attempts to convert a string to a Format

func (Format) MarshalText

func (x Format) MarshalText() ([]byte, error)

MarshalText implements the text marshaller method

func (*Format) Scan

func (x *Format) Scan(value interface{}) error

Scan implements the Scanner interface.

func (Format) String

func (x Format) String() string

String implements the Stringer interface.

func (*Format) UnmarshalText

func (x *Format) UnmarshalText(text []byte) error

UnmarshalText implements the text unmarshaller method

func (Format) Value

func (x Format) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type Option

type Option func(*resizeConfig)

func WithFormat

func WithFormat(format Format) Option

func WithMode

func WithMode(mode ResizeMode) Option

func WithQuality

func WithQuality(quality Quality) Option

type Quality

type Quality int

ENUM( high medium low )

const (
	// QualityHigh is a Quality of type High
	QualityHigh Quality = iota
	// QualityMedium is a Quality of type Medium
	QualityMedium
	// QualityLow is a Quality of type Low
	QualityLow
)

func ParseQuality

func ParseQuality(name string) (Quality, error)

ParseQuality attempts to convert a string to a Quality

func (Quality) MarshalText

func (x Quality) MarshalText() ([]byte, error)

MarshalText implements the text marshaller method

func (*Quality) Scan

func (x *Quality) Scan(value interface{}) error

Scan implements the Scanner interface.

func (Quality) String

func (x Quality) String() string

String implements the Stringer interface.

func (*Quality) UnmarshalText

func (x *Quality) UnmarshalText(text []byte) error

UnmarshalText implements the text unmarshaller method

func (Quality) Value

func (x Quality) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type ResizeMode

type ResizeMode int

ENUM( fit fill )

const (
	// ResizeModeFit is a ResizeMode of type Fit
	ResizeModeFit ResizeMode = iota
	// ResizeModeFill is a ResizeMode of type Fill
	ResizeModeFill
)

func ParseResizeMode

func ParseResizeMode(name string) (ResizeMode, error)

ParseResizeMode attempts to convert a string to a ResizeMode

func (ResizeMode) MarshalText

func (x ResizeMode) MarshalText() ([]byte, error)

MarshalText implements the text marshaller method

func (*ResizeMode) Scan

func (x *ResizeMode) Scan(value interface{}) error

Scan implements the Scanner interface.

func (ResizeMode) String

func (x ResizeMode) String() string

String implements the Stringer interface.

func (*ResizeMode) UnmarshalText

func (x *ResizeMode) UnmarshalText(text []byte) error

UnmarshalText implements the text unmarshaller method

func (ResizeMode) Value

func (x ResizeMode) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type Service

type Service struct {
	// contains filtered or unexported fields
}

Service

func New

func New(workers int) *Service

func (*Service) FormatFromExtension

func (s *Service) FormatFromExtension(ext string) (Format, error)

func (*Service) Resize

func (s *Service) Resize(ctx context.Context, in io.Reader, width, height int, out io.Writer, options ...Option) error

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