Beispiel #1
0
func (pr *BimgProcessor) Process(buffer []byte, geo btcdn.GeoBox) (img btcdn.Image, err error) {

	bimgImg := bimg.NewImage(buffer)

	var newImage []byte

	gravity := resolveGravity(geo.Gravity())

	if geo.Cropped() && geo.Resized() {
		newImage, err = resizeAndCrop(bimgImg, geo.Width(), geo.Height(), gravity)
	} else if geo.Resized() {
		if geo.Mode() == "!" {
			newImage, err = forceResize(bimgImg, geo.Width(), geo.Height())
		} else {
			newImage, err = resize(bimgImg, geo.Width())
		}
	} else if geo.Cropped() {
		newImage, err = crop(bimgImg, int(float64(geo.Offset()[1])), int(float64(geo.Offset()[0])), geo.Width(), geo.Height())
	}

	if geo.Greyscale() {
		newImage, err = bimgImg.Colourspace(bimg.INTERPRETATION_B_W)
	}

	img = &Image{
		body: newImage,
		mime: Mimes[bimgImg.Type()],
	}

	return
}
Beispiel #2
0
func resize(mw *imagick.MagickWand, geo btcdn.GeoBox) (err error) {
	var height uint
	width := geo.Width()
	baseWidth := int(mw.GetImageWidth())
	if width > baseWidth {
		width = baseWidth
	}

	if geo.Mode() == "!" {
		height = uint(geo.Height())
	} else {
		ratio := heightToWidthRatio(mw)
		height = uint((float64)(width) * ratio)
	}

	err = mw.ResizeImage(uint(width), height, imagick.FILTER_LANCZOS, 1)
	if err != nil {
		return
	}

	return
}