Added callbacks

engine/NBGraphics/include/NBGraphics/Window.hpp

@@ -6,6 +6,7 @@
 #include <NBGraphics/OGLObjects.hpp>
 
 #include <array>
+#include <functional>
 #include <memory>
 #include <string>
 #include <vector>
@@ -38,6 +39,12 @@ class OGLWindow {
             THROW(GLFWError(GLFWError::Codes::NOT_MAIN));
         }
     }
+    template<typename... Args>
+    using CallbackFuncType = void (*)(GLFWwindow*, Args...);
+    template<typename... Args>
+    struct CallbackSetterFuncType {
+        typedef CallbackFuncType<Args...> (*type)(GLFWwindow*, CallbackFuncType<Args...>);
+    };
 
     protected:
     static std::atomic<unsigned int> _count;
@@ -95,6 +102,7 @@ class OGLWindow {
         const std::vector<std::array<int, 2>>& integerHints={},
         const std::vector<std::tuple<int, std::string>>& stringHints={}
     );
+
     OGLWindow(OGLWindow&&) = delete;
     OGLWindow(const OGLWindow&) = delete;
     ~OGLWindow();
@@ -106,14 +114,15 @@ class OGLWindow {
     inline std::string getTitle() const { return _title; }
     std::array<int, 2> getSize() const;
     bool shouldClose() const;
-    inline void processEvents() const { CheckForMainThread(); glfwPollEvents(); }
-    inline void refresh() const { glfwSwapBuffers(_window_ptr); }
+    inline void pollEvents() const { CheckForMainThread(); glfwPollEvents(); }
+    inline void swapBuffers() const { glfwSwapBuffers(_window_ptr); }
 
     void setSize(unsigned int x, unsigned int y);
     void setTitle(const std::string&);
     void shouldClose(bool);
-/*     template<enum Callbacks, typename Func>
-    void setCallBack(Func); */
+
+    template<enum Callbacks, typename Func>
+    void setCallback(std::function<Func> callback);
 };
 
 };

engine/NBGraphics/src/Window.cpp

@@ -1,5 +1,7 @@
 #include <NBGraphics/Window.hpp>
 
+#include <functional>
+
 namespace nb {
 
 using GLFWCodes = GLFWError::Codes;
@@ -60,14 +62,14 @@ void OGLWindow::SetHintString(const std::tuple<int, std::string>& hint) {
 
 GLFWwindow* OGLWindow::MakeCurrent(const std::shared_ptr<OGLWindow>& window) {
     auto tmp = _currWindow;
-    _currWindow = window->getWindowPtr();
     if (window) {
-        glfwMakeContextCurrent(_currWindow);
+        _currWindow = window->getWindowPtr();
         _currArena = window->_arena;
     } else {
-        glfwMakeContextCurrent(nullptr);
+        _currWindow = nullptr;
         _currArena = nullptr;
     }
+    glfwMakeContextCurrent(_currWindow);
     return tmp;
 }
 
@@ -200,14 +202,37 @@ void OGLWindow::setTitle(const std::string& name) {
     glfwSetWindowTitle(_window_ptr, _title.c_str());
 }
 
-/* template<> void OGLWindow::setCallBack<OGLWindow::KEY>( CallbackFunc<int,int,int,int> func) {
+template<>
+void OGLWindow::setCallback<OGLWindow::KEY>(std::function<void(OGLWindow*, int, int, int, int)> callback)  {
     CheckForMainThread();
     auto tmp = makeCurrent();
-    auto tmp_func = 
-        [=](GLFWwindow* window, int a, int b, int c, int d){
-            func(this, a, b, c, d);
-        };
-    glfwSetKeyCallback(_window_ptr, tmp_func);
-} */
+    static auto this_ptr = this;
+    static auto tmp_callback = callback;
+    glfwSetKeyCallback(_window_ptr, [](GLFWwindow*, int a, int b, int c, int d){
+        tmp_callback(this_ptr, a, b, c, d);
+    });
+}
+
+template<>
+void OGLWindow::setCallback<OGLWindow::MOUSE_BUTTON>(std::function<void(OGLWindow*, int, int, int)> callback)  {
+    CheckForMainThread();
+    auto tmp = makeCurrent();
+    static auto this_ptr = this;
+    static auto tmp_callback = callback;
+    glfwSetMouseButtonCallback(_window_ptr, [](GLFWwindow*, int a, int b, int c){
+        tmp_callback(this_ptr, a, b, c);
+    });
+}
+
+template<>
+void OGLWindow::setCallback<OGLWindow::CURSOR_POS>(std::function<void(OGLWindow*, double, double)> callback)  {
+    CheckForMainThread();
+    auto tmp = makeCurrent();
+    static auto this_ptr = this;
+    static auto tmp_callback = callback;
+    glfwSetCursorPosCallback(_window_ptr, [](GLFWwindow*, double a, double b){
+        tmp_callback(this_ptr, a, b);
+    });
+}
 
 };

engine/NBGraphics/tests/TestWindow.cpp

@@ -69,13 +69,22 @@ int main() {
         }}, indxs);
     LOG(prog.log());
 
-    GLFWwindow* window_ptr = window->getWindowPtr();
-    while(!glfwWindowShouldClose(window_ptr)) {
+    window->setCallback<nb::OGLWindow::KEY>(
+        (std::function<void(nb::OGLWindow*, int, int, int, int)>)[](nb::OGLWindow* w, int key, int x, int actiom, int mods)->void{
+        if (key == GLFW_KEY_Q) {
+            w->shouldClose(true);
+        }
+    });
+    window->setCallback<nb::OGLWindow::CURSOR_POS>(
+        (std::function<void(nb::OGLWindow*, double, double)>)[](nb::OGLWindow* w, double x, double y)->void{
+        nb::logger.msg("Pos in x is " + std::to_string(x));
+    });
+    while(!window->shouldClose()) {
         OPENGL_CALL(glClearColor(0.2f, 0.3f, 0.3f, 1.0f));
         OPENGL_CALL(glClear(GL_COLOR_BUFFER_BIT));
         tri.draw();
-        glfwPollEvents();
-        glfwSwapBuffers(window_ptr);
+        window->pollEvents();
+        window->swapBuffers();
     }    
 
     return 0;