Documentation
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Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Thumbnail ¶
Thumbnail generates a thumbnail image representing this postcard's front. Providing a maximum width or height of zero will allow the thumbnail to grow up to the postcard's original size in that dimension.
func ThumbnailFile ¶
ThumbnailFile is a convenience method for retrieving a thumbnail directly on a file using Thumbnail.
Example ¶
package main
import (
"bytes"
"crypto/md5"
"fmt"
"image/png"
"github.com/dotpostcard/postcards-go/adapt"
)
func main() {
thumb, err := adapt.ThumbnailFile("../fixtures/hello.postcard", 128, 0)
if err != nil {
panic(err)
}
buf := new(bytes.Buffer)
if err := png.Encode(buf, thumb); err != nil {
panic(err)
}
fmt.Printf("Thumbnail PNG (%dx%d) has checksum %x",
thumb.Bounds().Dx(), thumb.Bounds().Dy(), md5.Sum(buf.Bytes()))
}
Output: Thumbnail PNG (128x157) has checksum eba1acbde60137aff808c9783c05706d
Types ¶
This section is empty.
Source Files
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