star/image/image.go

package image

import (
	"fmt"
	"image"

	"b612.me/starlog"
	"github.com/spf13/cobra"
)

func init() {
	Cmd.AddCommand(imgMirrorCmd)
}

var Cmd = &cobra.Command{
	Use:   "image",
	Short: "图像处理",
	Long:  "简单的图像处理工具",
	Run: func(this *cobra.Command, args []string) {
		this.Help()
	},
}

var imgMirrorCmd = &cobra.Command{
	Use:   "mirror",
	Short: "图像镜像翻转",
	Long:  "图像镜像翻转<水平>",
	Run: func(this *cobra.Command, args []string) {
		if len(args) == 0 {
			starlog.Errorln("请指定需要转换的图像！")
			return
		}
		for _, v := range args {
			img, err := OpenImage(v)
			if err != nil {
				starlog.Errorln(err, v)
				continue
			}
			size := img.Bounds()
			nimg := image.NewRGBA(size)
			for x := 0; x < size.Dx(); x++ {
				for y := 0; y < size.Dy(); y++ {
					nimg.Set(size.Dx()-x, y, img.At(x, y))
				}
			}
			if err := SavePhoto(v, nimg); err != nil {
				starlog.Errorln(err, v)
				continue
			} else {
				fmt.Println(v, "转换已完成！")
			}
		}
		fmt.Println("任务完成！")
	},
}

var imgAlpha = &cobra.Command{
	Use:   "alpha",
	Short: "设置透明度",
	Long:  "设置alpha通道透明度",
	Run: func(this *cobra.Command, args []string) {
		if len(args) == 0 {
			starlog.Errorln("请指定需要转换的图像！")
			return
		}
		for _, v := range args {
			img, err := OpenImage(v)
			if err != nil {
				starlog.Errorln(err, v)
				continue
			}
			img = SetAlpha(img, 4)
			if err := SavePhoto(v, img); err != nil {
				starlog.Errorln(err, v)
				continue
			} else {
				fmt.Println(v, "转换已完成！")
			}
		}
		fmt.Println("任务完成！")
	},
}