package main

import "fmt"

/*
实例
汤宝宝成为了一个电子画家，但是不同形状的笔刷和不同颜色颜料的组合让他犯了难...
*/

// 抽象类
type Paint interface {
	Use() string
}

type Brush interface {
	Draw()
}

// 具体实现类
type RedPaint struct{}

func (r *RedPaint) Use() string {
	return "红色颜料"
}

type BluePaint struct{}

func (b *BluePaint) Use() string {
	return "蓝色颜料"
}

type RoundBrush struct {
	paint Paint
}

func (r *RoundBrush) Draw() {
	fmt.Printf("使用圆形笔刷和%s进行绘图！\n", r.paint.Use())
}

type SquareBrush struct {
	paint Paint
}

func (s *SquareBrush) Draw() {
	fmt.Printf("使用方形笔刷和%s进行绘图！\n", s.paint.Use())
}

// 绘图函数
func Painting(brush Brush) {
	brush.Draw()
}

func main() {
	fmt.Println("============= 桥接模式 =============")

	redPaint := &RedPaint{}
	bluePaint := &BluePaint{}

	Painting(&RoundBrush{paint: redPaint})
	Painting(&SquareBrush{paint: redPaint})
	Painting(&RoundBrush{paint: bluePaint})
	Painting(&SquareBrush{paint: bluePaint})

	fmt.Println("\n=========== 桥接模式结束 ===========")
}