add GUI class

src/gui/GUI.cc

@@ -0,0 +1,69 @@
+#include "GUI.h"
+#include "gl3w.h"
+#include <iostream>
+
+#define WIDTH   500
+#define HEIGHT  500
+
+namespace jes
+{
+    GUI::GUI()
+    {
+        if (SDL_Init(SDL_INIT_VIDEO))
+        {
+            std::cerr << "Failed to initialize SDL!" << std::endl;
+            return;
+        }
+
+        atexit(SDL_Quit);
+
+        m_window = SDL_CreateWindow("jes",
+                                    SDL_WINDOWPOS_UNDEFINED,
+                                    SDL_WINDOWPOS_UNDEFINED,
+                                    WIDTH,
+                                    HEIGHT,
+                                    SDL_WINDOW_OPENGL);
+        if (!m_window)
+        {
+            std::cerr << "Failed to create window!" << std::endl;
+            SDL_Quit();
+            return;
+        }
+
+        (void)SDL_GL_CreateContext(m_window);
+
+        if (gl3wInit() != 0)
+        {
+            std::cerr << "Failed to gl3wInit()" << std::endl;
+            SDL_Quit();
+            return;
+        }
+
+        if (!gl3wIsSupported(3, 0))
+        {
+            std::cerr << "OpenGL 3.0 is not supported!" << std::endl;
+            SDL_Quit();
+            return;
+        }
+
+        glClearColor (0.0, 0.0, 0.0, 0.0);
+    }
+
+    void GUI::run()
+    {
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        SDL_GL_SwapWindow(m_window);
+
+        SDL_Event event;
+        while (SDL_WaitEvent(&event))
+        {
+            if (event.type == SDL_QUIT)
+                break;
+            else if (event.type == SDL_KEYDOWN)
+            {
+                if (event.key.keysym.sym == SDLK_ESCAPE)
+                    break;
+            }
+        }
+    }
+}

src/gui/GUI.h

@@ -0,0 +1,21 @@
+#ifndef JES_GUI_H
+#define JES_GUI_H
+
+#include "jes/Ref.h"
+#include <SDL.h>
+
+namespace jes
+{
+    class GUI
+    {
+    public:
+        GUI();
+        void run();
+    protected:
+        SDL_Window * m_window;
+    };
+
+    typedef Ref<GUI> GUIRef;
+}
+
+#endif

src/gui/main.cc

@@ -1,75 +1,10 @@
-#include "gl3w.h"
-#include <SDL.h>
 #include <iostream>
+#include "GUI.h"
 
 using namespace std;
 
-#define WIDTH   500
-#define HEIGHT  500
-
-void init(void)
-{
-    glClearColor (0.0, 0.0, 0.0, 0.0);
-}
-
-void display(SDL_Window * window)
-{
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-    SDL_GL_SwapWindow(window);
-}
-
 int main(int argc, char *argv[])
 {
-    if (SDL_Init(SDL_INIT_VIDEO))
+    jes::GUIRef gui = new jes::GUI();
-    {
+    gui->run();
-        cerr << "Failed to initialize SDL!" << endl;
-        return 1;
-    }
-
-    atexit(SDL_Quit);
-
-    SDL_Window * window = SDL_CreateWindow(argv[0],
-                                           SDL_WINDOWPOS_UNDEFINED,
-                                           SDL_WINDOWPOS_UNDEFINED,
-                                           WIDTH,
-                                           HEIGHT,
-                                           SDL_WINDOW_OPENGL);
-    if (!window)
-    {
-        cerr << "Failed to create window!" << endl;
-        SDL_Quit();
-        return 2;
-    }
-
-    (void)SDL_GL_CreateContext(window);
-
-    if (gl3wInit() != 0)
-    {
-        cerr << "Failed to gl3wInit()" << endl;
-        SDL_Quit();
-        return 2;
-    }
-
-    if (!gl3wIsSupported(3, 0))
-    {
-        cerr << "OpenGL 3.0 is not supported!" << endl;
-        SDL_Quit();
-        return 2;
-    }
-
-    init();
-    display(window);
-    SDL_Event event;
-    while (SDL_WaitEvent(&event))
-    {
-        if (event.type == SDL_QUIT)
-            break;
-        else if (event.type == SDL_KEYDOWN)
-        {
-            if (event.key.keysym.sym == SDLK_ESCAPE)
-                break;
-            if (event.key.keysym.sym == SDLK_RETURN)
-                display(window);
-        }
-    }
 }