README
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golibri/image
Incremental image processing from web sources. Reads from png and jpg sources, but uses only jpeg internally and for exports.
installation
go get -u github.com/golibri/image
usage
- Initialize with an image URL (
.png,.jpgor.jpeg) - Download and analyze the actual image (bytes, height, width)
- Create a thumbnail of arbitrary size off the image (jpg)
- The Thumbnail also has a Base64 representation
img := image.New("https://golang.org/doc/gopher/frontpage.png"). // init
Fetch(). // download and analyze
CreateThumbnail(120, 70) // width, height
thumb := img.Thumbnail // thumb also has type "Image"
Check the struct's data fields for any info you might need. You can also create a Base64 off the original image if needed.
license
LGPLv3. (You can use it in commercial projects as you like, but improvements/bugfixes must flow back to this lib.)
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Image ¶
type Image struct {
URL string
Base64 string // jpeg
Binary *bytes.Buffer // jpeg
Height int
Width int
Thumbnail *Image
// contains filtered or unexported fields
}
Image stands for an image object
func (*Image) CreateBase64 ¶
CreateBase64 creates and stores the Base64 string of the underlying image
func (*Image) CreateBinary ¶
CreateBinary creates and stores the byte representation of the image
func (*Image) CreateThumbnail ¶
CreateThumbnail shrinks the image to the specified sizes. Chainable.
func (*Image) URLIsImage ¶
URLIsImage checks whether the stored URL has png/jpg/jpeg suffix
Source Files