init commit

archive/design pattern/flyweight.cpp

@@ -0,0 +1,98 @@
+#include <iostream>
+#include <unordered_map>
+using namespace std;
+
+class info
+{
+public:
+    int x;
+    int y;
+    info(int x, int y)
+    {
+        this->x = x;
+        this->y = y;
+    }
+};
+
+class resource
+{
+public:
+    virtual void display(info *) = 0;
+};
+
+class img : public resource
+{
+    string image;
+
+public:
+    img(string img)
+    {
+        this->image = img;
+    }
+    void display(info *i)
+    {
+        cout << "图片:" << image << "位置:" << i->x << "," << i->y << endl;
+    }
+};
+
+class video : public resource
+{
+    string v;
+
+public:
+    video(string video)
+    {
+        this->v = video;
+    }
+    void display(info *i)
+    {
+        cout << "视频:" << v << "位置:" << i->x << "," << i->y << endl;
+    }
+};
+
+class resourceFactory
+{
+protected:
+    static unordered_map<string, resource *> map;
+
+    static resourceFactory *res;
+
+public:
+    static resourceFactory *getResourceFactory()
+    {
+        return resourceFactory::res;
+    }
+
+    resource *getResource(string key)
+    {
+        if (map.find(key) == map.end())
+        {
+            return NULL;
+        }
+        return map[key];
+    }
+
+    void add(string key, resource *res)
+    {
+        map[key] = res;
+    }
+};
+
+unordered_map<string, resource *> resourceFactory::map;
+resourceFactory *resourceFactory::res = new resourceFactory();
+
+int main()
+{
+    resource *img1 = new img("1"), *img2 = new img("2");
+    resource *video1 = new video("1"), *video2 = new video("2");
+    resourceFactory *factory = resourceFactory::getResourceFactory();
+    factory->add("img1", img1);
+    factory->add("img2", img2);
+    factory->add("video1", video1);
+    factory->add("video2", video2);
+
+    factory->getResource("img1")->display(new info(1, 2));
+    factory->getResource("video1")->display(new info(4, 2));
+
+    return 0;
+}