Пример #1
0
func convert(mw *imagick.MagickWand, request *ZRequest) error {

	fmt.Println("【zscale】:调用convert()方法......处理图片参数")

	var result error
	result = nil
	mw.ResetIterator()
	mw.SetImageOrientation(imagick.ORIENTATION_TOP_LEFT)

	x := request.X
	y := request.Y
	cols := uint(request.Width)
	rows := uint(request.Height)

	fmt.Sprintf("image cols %d, rows %d \n", cols, rows)

	if !(cols == 0 && rows == 0) {
		//fmt.Println("call crop&scal function......")

		/* crop and scale */
		if x == -1 && y == -1 {
			//	fmt.Println("call crop&scal function......")

			//	fmt.Print(fmt.Sprintf("proportion(im, %d, %d, %d) \n", request.Proportion, cols, rows))
			result = proportion(mw, request.Proportion, cols, rows)
			if result != nil {
				return result
			}
		} else {

			//	fmt.Print(fmt.Sprintf("crop(im, %d, %d, %d, %d) \n", x, y, cols, rows))

			result = crop(mw, x, y, cols, rows)
			if result != nil {
				return result
			}
		}
	}

	/* rotate image */
	if request.Rotate != 0 {
		//	fmt.Print(fmt.Sprintf("wi_rotate(im, %d) \n", request.Rotate))

		background := imagick.NewPixelWand()
		if background == nil {
			result = fmt.Errorf("init new pixelwand faile.")
			return result
		}
		defer background.Destroy()
		isOk := background.SetColor("#ffffff")
		if !isOk {
			result = fmt.Errorf("set background color faile.")
			return result
		}

		result = mw.RotateImage(background, float64(request.Rotate))
		if result != nil {
			return result
		}
	}

	/* set gray */
	if request.Gary == 1 {
		//	fmt.Print(fmt.Sprintf("wi_gray(im) \n"))
		result = mw.SetImageType(imagick.IMAGE_TYPE_GRAYSCALE)
		if result != nil {
			return result
		}
	}

	/* set quality */
	//fmt.Print(fmt.Sprintf("wi_set_quality(im, %d) \n", request.Quality))
	result = mw.SetImageCompressionQuality(uint(request.Quality))
	if result != nil {
		return result
	}

	/* set format */
	if "none" != request.Format {
		//		fmt.Print(fmt.Sprintf("wi_set_format(im, %s) \n", request.Format))
		result = mw.SetImageFormat(request.Format)
		if result != nil {
			return result
		}
	}

	//fmt.Print(fmt.Sprintf("convert(im, req) %s \n", result))

	return result
}