From f7d2eea22957d75a34654a1b78ea64e7761ef4b8 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 17 Jan 2021 23:35:24 +0000
Subject: Split window and display (application) classes

---
 gfx/window.cpp | 30 ++++++++++++++++++++++++++++++
 gfx/window.h   | 26 ++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 gfx/window.cpp
 create mode 100644 gfx/window.h

(limited to 'gfx')

diff --git a/gfx/window.cpp b/gfx/window.cpp
new file mode 100644
index 0000000..2f94d1a
--- /dev/null
+++ b/gfx/window.cpp
@@ -0,0 +1,30 @@
+#include "window.h"
+#include <GL/glew.h>
+#include <stdexcept>
+
+Window::Window(int width, int height, const std::string & title) :
+	m_window {m_window.create(SDL_CreateWindow, SDL_DestroyWindow, title.c_str(), SDL_WINDOWPOS_CENTERED,
+			SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_OPENGL)},
+	m_glContext {m_glContext.create(SDL_GL_CreateContext, SDL_GL_DeleteContext, m_window)}
+{
+	if (glewInit() != GLEW_OK) {
+		throw std::runtime_error {"Glew failed to initialize!"};
+	}
+
+	glEnable(GL_DEPTH_TEST);
+	glEnable(GL_CULL_FACE);
+	glCullFace(GL_BACK);
+}
+
+void
+Window::Clear(float r, float g, float b, float a) const
+{
+	glClearColor(r, g, b, a);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+void
+Window::SwapBuffers() const
+{
+	SDL_GL_SwapWindow(m_window);
+}
diff --git a/gfx/window.h b/gfx/window.h
new file mode 100644
index 0000000..3ac583f
--- /dev/null
+++ b/gfx/window.h
@@ -0,0 +1,26 @@
+#ifndef DISPLAY_INCLUDED_H
+#define DISPLAY_INCLUDED_H
+
+#include "ptr.hpp"
+#include <SDL2/SDL.h>
+#include <special_members.hpp>
+#include <string>
+#include <type_traits>
+
+class Window {
+public:
+	Window(int width, int height, const std::string & title);
+	~Window() = default;
+
+	NO_COPY(Window);
+	NO_MOVE(Window);
+
+	void Clear(float r, float g, float b, float a) const;
+	void SwapBuffers() const;
+
+private:
+	wrapped_ptr<SDL_Window> m_window;
+	wrapped_ptr<std::remove_pointer_t<SDL_GLContext>> m_glContext;
+};
+
+#endif
-- 
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