func (im *Image) AnnotateImage(x, y int, text string, fontSize int, color string) {
image_info := C.CloneImageInfo(nil)
defer C.DestroyImageInfo(image_info)
draw_info := C.CloneDrawInfo(image_info, nil)
defer C.DestroyDrawInfo(draw_info)
textBytes := []byte(text)
bytesPointer := unsafe.Pointer(&textBytes[0])
textArray := (*C.uchar)(bytesPointer)
colorArray := C.CString(color)
defer C.free(unsafe.Pointer(colorArray))
draw_context := C.DrawAllocateContext(draw_info, im.image)
defer C.DrawDestroyContext(draw_context)
C.DrawSetFontSize(draw_context, C.double(fontSize))
C.DrawSetStrokeColorString(draw_context, colorArray)
C.DrawSetFillColorString(draw_context, colorArray)
C.DrawAnnotation(draw_context, C.double(x), C.double(y), textArray)
C.DrawRender(draw_context)
}
// Sets the font pointsize to use when annotating with text.
//
// pointSize: text pointsize
func (dw *DrawingWand) SetFontSize(pointSize float64) {
C.DrawSetFontSize(dw.dw, C.double(pointSize))
}
// Sets canvas' default font size
func (self *Canvas) SetFontSize(size float64) {
self.text.Size = size
C.DrawSetFontSize(self.drawing, C.double(size))
}