Exemple #1
0
// Composite modifies the image, drawing the draw Image argument at offset
// (x, y) using the c Composite operation.
func (im *Image) Composite(c Composite, draw *Image, x int, y int) error {
	op, err := im.compositeOperator(c)
	if err != nil {
		return err
	}
	var ex C.ExceptionInfo
	C.GetExceptionInfo(&ex)
	defer C.DestroyExceptionInfo(&ex)
	var data C.CompositeData
	data.composite = C.int(op)
	data.draw = draw.image
	data.x = C.int(x)
	data.y = C.int(y)
	res, err := im.applyDataFunc("compositing", C.ImageDataFunc(C.compositeImage), &data)
	// res.image will be != than im.image when im is a non
	// coalesced animation
	if res.image != im.image {
		unrefImages(im.image)
		initializeRefCounts(res.image)
		refImages(res.image)
		im.image = res.image
		dontFree(res)
	}
	return err
}
Exemple #2
0
// Composite modifies the image, drawing the draw Image argument at offset
// (x, y) using the c Composite operation.
func (im *Image) Composite(c Composite, draw *Image, x int, y int) error {
	op, err := im.compositeOperator(c)
	if err != nil {
		return err
	}
	var ex C.ExceptionInfo
	C.GetExceptionInfo(&ex)
	defer C.DestroyExceptionInfo(&ex)
	var data C.CompositeData
	data.composite = C.int(op)
	data.draw = draw.image
	data.x = C.int(x)
	data.y = C.int(y)
	_, err = im.applyDataFunc("compositing", C.ImageDataFunc(C.compositeImage), &data)
	return err
}