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feat(#92): support Extend param with optional background

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This commit is contained in:
Tomas Aparicio 2016-09-30 22:56:59 +01:00
parent 44636a88f0
commit 522cf71c73
6 changed files with 73 additions and 7 deletions
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12
vips.go
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@ -459,11 +459,17 @@ func vipsShrink(input *C.VipsImage, shrink int) (*C.VipsImage, error) {
return image, nil
}
func vipsEmbed(input *C.VipsImage, left, top, width, height, extend int) (*C.VipsImage, error) {
func vipsEmbed(input *C.VipsImage, left, top, width, height int, extend Extend, background Color) (*C.VipsImage, error) {
var image *C.VipsImage
defer C.g_object_unref(C.gpointer(input))
err := C.vips_embed_bridge(input, &image, C.int(left), C.int(top), C.int(width), C.int(height), C.int(extend))
// Max extend value, see: http://www.vips.ecs.soton.ac.uk/supported/8.4/doc/html/libvips/libvips-conversion.html#VipsExtend
if extend > 5 {
extend = ExtendBackground
}
defer C.g_object_unref(C.gpointer(input))
err := C.vips_embed_bridge(input, &image, C.int(left), C.int(top), C.int(width),
C.int(height), C.int(extend), C.double(background.R), C.double(background.G), C.double(background.B))
if err != 0 {
return nil, catchVipsError()
}