imageutils

package

v0.0.0-...-6797358 Latest Latest Go to latest Published: Aug 4, 2022 License: MIT Imports: 8 Imported by: 0

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func GetGoodResize(ow, oh, w, h int) (int, int, int, int)

GetResizeParam return : resize and crop

type ImageTransform struct {
	Raw    image.Image
	Im     image.Image
	Format imaging.Format
}

func NewImageFileTransform(filename string) (*ImageTransform, error)

func NewImageTransform(file io.Reader, format imaging.Format) (*ImageTransform, error)

func NewImageTransformExt(file io.Reader, ext string) (*ImageTransform, error)

func (t *ImageTransform) Buffer() (*bytes.Buffer, error)

func (t *ImageTransform) Crop(x, y, w, h int) *ImageTransform

func (t *ImageTransform) Crop4(crop []int) *ImageTransform

Crop4 crop x, y, w, h

func (t *ImageTransform) CropRect(rect image.Rectangle) *ImageTransform

func (t *ImageTransform) ImClone() *ImageTransform

func (t *ImageTransform) Resize(w, h int) *ImageTransform

func (t *ImageTransform) ResizeKeepRatio(w, h int) *ImageTransform

func (t *ImageTransform) ResizeMax(maxWidth, maxHeight int) bool

ResizeMax 不改变压缩比，选择最大的压缩比

func (t *ImageTransform) Save(filePath string) error

func (t *ImageTransform) Size() (int, int)

func (t *ImageTransform) Write(filename string) error