OpenGL 2.1 is now required to use love.graphics (resolves issue #779.)

Removed love.graphics.isSupported("canvas", "shader", "npot", "subtractive", and "mipmap"), since those features are all guaranteed by the minimum system requirements.

--HG--
branch : minor

src/modules/window/Window.cpp

@@ -74,6 +74,16 @@ bool Window::getConstant(Window::Setting in, const char *&out)
 	return settings.find(in, out);
 }
 
+bool Window::getConstant(const char *in, MessageBoxType &out)
+{
+	return messageBoxTypes.find(in, out);
+}
+
+bool Window::getConstant(MessageBoxType in, const char *&out)
+{
+	return messageBoxTypes.find(in, out);
+}
+
 StringMap<Window::Setting, Window::SETTING_MAX_ENUM>::Entry Window::settingEntries[] =
 {
 	{"fullscreen", SETTING_FULLSCREEN},
@@ -100,5 +110,14 @@ StringMap<Window::FullscreenType, Window::FULLSCREEN_TYPE_MAX_ENUM>::Entry Windo
 
 StringMap<Window::FullscreenType, Window::FULLSCREEN_TYPE_MAX_ENUM> Window::fullscreenTypes(Window::fullscreenTypeEntries, sizeof(Window::fullscreenTypeEntries));
 
+StringMap<MessageBoxType, MESSAGEBOX_MAX_ENUM>::Entry Window::messageBoxTypeEntries[] =
+{
+	{"error", MESSAGEBOX_ERROR},
+	{"warning", MESSAGEBOX_WARNING},
+	{"info", MESSAGEBOX_INFO},
+};
+
+StringMap<MessageBoxType, MESSAGEBOX_MAX_ENUM> Window::messageBoxTypes(Window::messageBoxTypeEntries, sizeof(Window::messageBoxTypeEntries));
+
 } // window
 } // love

src/modules/window/Window.h

@@ -39,6 +39,14 @@ namespace window
 // whole thing here because it uses the Window::Type enum.
 struct WindowSettings;
 
+enum MessageBoxType
+{
+	MESSAGEBOX_ERROR,
+	MESSAGEBOX_WARNING,
+	MESSAGEBOX_INFO,
+	MESSAGEBOX_MAX_ENUM
+};
+
 class Window : public Module
 {
 public:
@@ -119,6 +127,8 @@ public:
 
 	virtual const void *getHandle() const = 0;
 
+	virtual void showMessageBox(MessageBoxType type, const char *title, const char *message) = 0;
+
 	//virtual static Window *createSingleton() = 0;
 	//virtual static Window *getSingleton() = 0;
 	// No virtual statics, of course, but you are supposed to implement these statics.
@@ -129,6 +139,9 @@ public:
 	static bool getConstant(const char *in, FullscreenType &out);
 	static bool getConstant(FullscreenType in, const char *&out);
 
+	static bool getConstant(const char *in, MessageBoxType &out);
+	static bool getConstant(MessageBoxType in, const char *&out);
+
 protected:
 
 	static Window *singleton;
@@ -141,6 +154,9 @@ private:
 	static StringMap<FullscreenType, FULLSCREEN_TYPE_MAX_ENUM>::Entry fullscreenTypeEntries[];
 	static StringMap<FullscreenType, FULLSCREEN_TYPE_MAX_ENUM> fullscreenTypes;
 
+	static StringMap<MessageBoxType, MESSAGEBOX_MAX_ENUM>::Entry messageBoxTypeEntries[];
+	static StringMap<MessageBoxType, MESSAGEBOX_MAX_ENUM> messageBoxTypes;
+
 }; // Window
 
 struct WindowSettings

src/modules/window/sdl/Window.cpp

@@ -654,6 +654,27 @@ const void *Window::getHandle() const
 	return window;
 }
 
+void Window::showMessageBox(MessageBoxType type, const char *title, const char *message)
+{
+	SDL_MessageBoxFlags sdlflags;
+
+	switch (type)
+	{
+	case MESSAGEBOX_ERROR:
+		sdlflags = SDL_MESSAGEBOX_ERROR;
+		break;
+	case MESSAGEBOX_WARNING:
+		sdlflags = SDL_MESSAGEBOX_WARNING;
+		break;
+	case MESSAGEBOX_INFO:
+	default:
+		sdlflags = SDL_MESSAGEBOX_INFORMATION;
+		break;
+	}
+
+	SDL_ShowSimpleMessageBox(sdlflags, title, message, window);
+}
+
 love::window::Window *Window::createSingleton()
 {
 	if (!singleton)

src/modules/window/sdl/Window.h

@@ -83,6 +83,8 @@ public:
 
 	const void *getHandle() const;
 
+	void showMessageBox(MessageBoxType type, const char *title, const char *message);
+
 	static love::window::Window *createSingleton();
 	static love::window::Window *getSingleton();