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feat(#18, #17)

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This commit is contained in:
Tomas Aparicio 2015-04-07 23:02:31 +02:00
parent b93919d182
commit 16576f49c9
6 changed files with 170 additions and 52 deletions
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48
image.go
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@ -4,6 +4,7 @@ type Image struct {
buffer []byte
}
// Resize the image to fixed width and height
func (i *Image) Resize(width, height int) ([]byte, error) {
options := Options{
Width: width,
@ -12,6 +13,7 @@ func (i *Image) Resize(width, height int) ([]byte, error) {
return i.Process(options)
}
// Extract area from the by X/Y axis
func (i *Image) Extract(top, left, width, height int) ([]byte, error) {
options := Options{
Top: top,
@ -22,6 +24,17 @@ func (i *Image) Extract(top, left, width, height int) ([]byte, error) {
return i.Process(options)
}
// Enlarge the image from the by X/Y axis
func (i *Image) Enlarge(width, height int) ([]byte, error) {
options := Options{
Width: width,
Height: height,
Enlarge: true,
}
return i.Process(options)
}
// Crop an image by width and height
func (i *Image) Crop(width, height int) ([]byte, error) {
options := Options{
Width: width,
@ -31,6 +44,25 @@ func (i *Image) Crop(width, height int) ([]byte, error) {
return i.Process(options)
}
// Crop an image by width (auto height)
func (i *Image) CropByWidth(width int) ([]byte, error) {
options := Options{
Width: width,
Crop: true,
}
return i.Process(options)
}
// Crop an image by height (auto width)
func (i *Image) CropByHeight(height int) ([]byte, error) {
options := Options{
Height: height,
Crop: true,
}
return i.Process(options)
}
// Thumbnail the image by the a given width by aspect ratio 4:4
func (i *Image) Thumbnail(pixels int) ([]byte, error) {
options := Options{
Width: pixels,
@ -41,21 +73,25 @@ func (i *Image) Thumbnail(pixels int) ([]byte, error) {
return i.Process(options)
}
// Rotate the image by given angle degrees (0, 90, 180 or 270)
func (i *Image) Rotate(a Angle) ([]byte, error) {
options := Options{Rotate: a}
return i.Process(options)
}
// Flip the image about the vertical Y axis
func (i *Image) Flip() ([]byte, error) {
options := Options{Flip: VERTICAL}
return i.Process(options)
}
// Flop the image about the horizontal X axis
func (i *Image) Convert(t ImageType) ([]byte, error) {
options := Options{Type: t}
return i.Process(options)
}
// Transform the image by custom options
func (i *Image) Process(o Options) ([]byte, error) {
image, err := Resize(i.buffer, o)
if err != nil {
@ -65,18 +101,22 @@ func (i *Image) Process(o Options) ([]byte, error) {
return image, nil
}
func (i *Image) Type() string {
return DetermineImageTypeName(i.buffer)
}
// Get image metadata (size, alpha channel, profile, EXIF rotation)
func (i *Image) Metadata() (ImageMetadata, error) {
return Metadata(i.buffer)
}
// Get image type format (jpeg, png, webp, tiff)
func (i *Image) Type() string {
return DetermineImageTypeName(i.buffer)
}
// Get image size
func (i *Image) Size() (ImageSize, error) {
return Size(i.buffer)
}
// Creates a new image
func NewImage(buf []byte) *Image {
return &Image{buf}
}