Esempio n. 1
0
func (p *gdImage) gdCopyResized(dstX, dstY, srcX, srcY, dstW, dstH, srcW, srcH int) *gdImage {
	if p == nil || p.img == nil {
		panic(imageError)
	}

	dst := gdCreate(dstW, dstH)

	if dst == nil {
		return nil
	}

	transparency := C.gdImageColorAllocateAlpha(dst.img, 255, 255, 255, 127)
	C.gdImageFilledRectangle(dst.img, C.int(dstX), C.int(dstY), C.int(dstW), C.int(dstH), transparency)
	C.gdImageColorTransparent(dst.img, transparency)

	C.gdImageCopyResized(dst.img, p.img, C.int(dstX), C.int(dstY), C.int(srcX), C.int(srcY),
		C.int(dstW), C.int(dstH), C.int(srcW), C.int(srcH))

	if isInvalid(dst) {
		dst.gdDestroy()
		return nil
	}

	return dst
}
Esempio n. 2
0
File: gd.go Progetto: trajber/go-gd
func (p *Image) ColorTransparent(color Color) {
	C.gdImageColorTransparent(p.img, C.int(color))
}