Creating Context instance in all *Context classes.

The naming is now kinda schizofrenic, hope I come up with something
better.

src/Contexts/EglContext.cpp

@@ -15,9 +15,13 @@
 
 #include "EglContext.h"
 
+#include "Context.h"
+
 namespace Magnum { namespace Contexts {
 
 EglContext::~EglContext() {
+    delete c;
+
     eglDestroyContext(display, context);
     eglDestroySurface(display, surface);
     eglTerminate(display);
@@ -81,6 +85,8 @@ void EglContext::createContext(EGLNativeWindowType window) {
     }
 
     /** @bug Fixme: On desktop OpenGL and Mesa EGL implementation OpenGL version is 1.0, which is wrong */
+
+    context = new Context;
 }
 
 }}

src/Contexts/EglContext.h

@@ -28,7 +28,11 @@
 
 #include "AbstractContext.h"
 
-namespace Magnum { namespace Contexts {
+namespace Magnum {
+
+class Context;
+
+namespace Contexts {
 
 #ifndef DOXYGEN_GENERATING_OUTPUT
 /* EGL returns visual ID as int, but Xorg expects long unsigned int */
@@ -64,6 +68,8 @@ class EglContext: public AbstractContext<EGLNativeDisplayType, VisualId, EGLNati
         EGLConfig config;
         EGLSurface surface;
         EGLContext context;
+
+        Context* c;
 };
 
 }}

src/Contexts/GlutWindowContext.cpp

@@ -15,6 +15,7 @@
 
 #include "GlutWindowContext.h"
 
+#include "Context.h"
 #include "ExtensionWrangler.h"
 
 namespace Magnum { namespace Contexts {
@@ -38,6 +39,12 @@ GlutWindowContext::GlutWindowContext(int& argc, char** argv, const std::string&
     glutDisplayFunc(staticDrawEvent);
 
     ExtensionWrangler::initialize();
+
+    c = new Context;
+}
+
+GlutWindowContext::~GlutWindowContext() {
+    delete c;
 }
 
 }}

src/Contexts/GlutWindowContext.h

@@ -28,7 +28,11 @@
 
 #include "AbstractWindowContext.h"
 
-namespace Magnum { namespace Contexts {
+namespace Magnum {
+
+class Context;
+
+namespace Contexts {
 
 /** @nosubgrouping
 @brief GLUT context
@@ -52,6 +56,8 @@ class GlutWindowContext: public AbstractWindowContext {
          */
         GlutWindowContext(int& argc, char** argv, const std::string& title = "Magnum GLUT context", const Math::Vector2<GLsizei>& size = Math::Vector2<GLsizei>(800, 600));
 
+        ~GlutWindowContext();
+
         inline int exec() {
             glutMainLoop();
             return 0;
@@ -246,6 +252,8 @@ class GlutWindowContext: public AbstractWindowContext {
 
         int& argc;
         char** argv;
+
+        Context* c;
 };
 
 /* Implementations for inline functions with unused parameters */

src/Contexts/GlxContext.cpp

@@ -18,6 +18,8 @@
 #include <GL/glxext.h>
 #include <Utility/Debug.h>
 
+#include "Context.h"
+
 #define None 0L // redef Xlib nonsense
 
 namespace Magnum { namespace Contexts {
@@ -83,9 +85,13 @@ void GlxContext::createContext(Window nativeWindow) {
         Error() << "GlxContext: cannot create context.";
         exit(1);
     }
+
+    c = new Context;
 }
 
 GlxContext::~GlxContext() {
+    delete c;
+
     glXMakeCurrent(display, None, nullptr);
     glXDestroyContext(display, context);
 }

src/Contexts/GlxContext.h

@@ -27,7 +27,11 @@
 
 #include "AbstractContext.h"
 
-namespace Magnum { namespace Contexts {
+namespace Magnum {
+
+class Context;
+
+namespace Contexts {
 
 /**
 @brief GLX interface
@@ -62,6 +66,8 @@ class GlxContext: public AbstractContext<Display*, VisualID, Window> {
         Window window;
         GLXFBConfig* configs;
         GLXContext context;
+
+        Context* c;
 };
 
 }}

src/Contexts/Sdl2WindowContext.cpp

@@ -14,6 +14,8 @@
 */
 
 #include "Sdl2WindowContext.h"
+
+#include "Context.h"
 #include "ExtensionWrangler.h"
 
 namespace Magnum { namespace Contexts {
@@ -52,9 +54,13 @@ Sdl2WindowContext::Sdl2WindowContext(int, char**, const std::string& name, const
     sizeEvent->window.data1 = size.x();
     sizeEvent->window.data2 = size.y();
     SDL_PushEvent(sizeEvent);
+
+    c = new Context;
 }
 
 Sdl2WindowContext::~Sdl2WindowContext() {
+    delete c;
+
     SDL_GL_DeleteContext(context);
     SDL_DestroyWindow(window);
     SDL_Quit();

src/Contexts/Sdl2WindowContext.h

@@ -27,7 +27,11 @@
 
 #include "AbstractWindowContext.h"
 
-namespace Magnum { namespace Contexts {
+namespace Magnum {
+
+class Context;
+
+namespace Contexts {
 
 /** @nosubgrouping
 @brief SDL2 context
@@ -179,6 +183,8 @@ class Sdl2WindowContext: public AbstractWindowContext {
         SDL_Window* window;
         SDL_GLContext context;
 
+        Context* c;
+
         bool _redraw;
 };