init commit

archive/design pattern/factory/abstract.cpp

@@ -0,0 +1,62 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+class Init
+{
+public:
+    virtual void init() = 0;
+};
+
+class ArrowKeys
+{
+public:
+    virtual void arrowKeys() = 0;
+};
+
+class SystemFactory
+{
+public:
+    virtual Init *CreateInit() = 0;
+    virtual ArrowKeys *CreateArrowKeys() = 0;
+};
+
+class AndroidInit : public Init
+{
+public:
+    void init()
+    {
+        cout << "安卓初始化" << endl;
+    }
+};
+
+class AndroidArrowKeys : public ArrowKeys
+{
+public:
+    void arrowKeys()
+    {
+        cout << "安卓方向键" << endl;
+    }
+};
+
+class AndroidFactory : public SystemFactory
+{
+public:
+    Init *CreateInit()
+    {
+        return new AndroidInit();
+    }
+    ArrowKeys *CreateArrowKeys()
+    {
+        return new AndroidArrowKeys();
+    }
+};
+
+int main()
+{
+    SystemFactory *s = new AndroidFactory();
+    s->CreateInit()->init();
+    s->CreateArrowKeys()->arrowKeys();
+
+    return 0;
+}

archive/design pattern/factory/factory.cpp

@@ -0,0 +1,91 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+class Image
+{
+public:
+    virtual void read() = 0;
+};
+
+class ImageFactory
+{
+public:
+    virtual Image *create() = 0;
+    virtual void read() = 0;
+};
+
+class JpgImage : public Image
+{
+public:
+    string filename;
+
+public:
+    JpgImage(string filename)
+    {
+        this->filename = filename;
+    }
+
+    void read()
+    {
+        cout << "读取jpg文件:" << this->filename << endl;
+    }
+};
+
+class PngImage : public Image
+{
+public:
+    void read()
+    {
+        cout << "读取png图片" << endl;
+    }
+};
+
+class JpgImageFactory : public ImageFactory
+{
+private:
+    Image *img;
+
+public:
+    Image *create()
+    {
+        this->img = new JpgImage("file-name");
+        return this->img;
+    }
+
+    void read()
+    {
+        img->read();
+    }
+};
+
+class PngImageFactory : public ImageFactory
+{
+private:
+    Image *img;
+
+public:
+    Image *create()
+    {
+        this->img = new PngImage();
+        return this->img;
+    }
+    void read()
+    {
+        img->read();
+    }
+};
+
+int main()
+{
+    ImageFactory *factory = new JpgImageFactory();
+    Image *img = factory->create();
+    img->read();
+    factory->read();
+
+    factory = new PngImageFactory();
+    img = factory->create();
+    img->read();
+    factory->read();
+    return 0;
+}

archive/design pattern/factory/readme.md

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+## 简单工厂模式
+> 一个工厂生产多个产品
+
+## 工厂方法模式
+> 多个工厂生产多个产品
+
+
+![](img/1.png)

archive/design pattern/factory/simple.cpp

@@ -0,0 +1,52 @@
+#include <iostream>
+#include <string>
+
+class Graph
+{
+public:
+    virtual void show() = 0;
+};
+
+class Triangle : public Graph
+{
+public:
+    void show()
+    {
+        std::cout << "三角形" << std::endl;
+    }
+};
+
+class Round : public Graph
+{
+public:
+    void show()
+    {
+        std::cout << "圆形" << std::endl;
+    }
+};
+
+class GraphFactory
+{
+public:
+    static Graph *CreateGraph(std::string name)
+    {
+        if (name == "triangle")
+        {
+            return new Triangle();
+        }
+        else if (name == "round")
+        {
+            return new Round();
+        }
+        return NULL;
+    }
+};
+
+int main()
+{
+    Graph *a = GraphFactory::CreateGraph("triangle");
+    a->show();
+    a = GraphFactory::CreateGraph("round");
+    a->show();
+    return 0;
+}