From aee5bf7802f112111961faa824deb6f97ef80203 Mon Sep 17 00:00:00 2001
From: Joursoir <chat@joursoir.net>
Date: Fri, 26 Mar 2021 15:32:22 +0000
Subject: add window subsystem

---
 src/window/Window.cpp | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++
 src/window/Window.hpp | 26 +++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 src/window/Window.cpp
 create mode 100644 src/window/Window.hpp

diff --git a/src/window/Window.cpp b/src/window/Window.cpp
new file mode 100644
index 0000000..7aef326
--- /dev/null
+++ b/src/window/Window.cpp
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#include "Window.hpp"
+
+/* static method */
+Window *Window::Initialize(int width, int height, const char *title)
+{
+	GLFWwindow *win;
+	glfwDefaultWindowHints();
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+	glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
+	/*glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
+	glfwSetErrorCallback(error_callback);*/
+
+	win = glfwCreateWindow(width, height, title, 0, 0);
+	if(!win) {
+		fprintf(stderr, "Failed to create GLFW window\n");
+		return 0;
+	}
+	glfwMakeContextCurrent(win);
+
+	glewExperimental = GL_TRUE;
+	int result = glewInit();
+	if(result != GLEW_OK) {
+		fprintf(stderr, "Failed to init GLEW: %s\n", title);
+		return 0;
+	}
+
+	Window *w = new Window(win, width, height);
+	w->MakeContextCurrent();
+	return w;
+}
+
+void Window::Resize(int w, int h)
+{
+	width = w;
+	height = h;
+	if(glfwGetCurrentContext() == win)
+		glViewport(0, 0, width, height);
+}
+
+void Window::MakeContextCurrent()
+{
+	glfwMakeContextCurrent(win);
+	glViewport(0, 0, width, height);
+}
+
+void Window::SetCursorMode(int mode)
+{
+	glfwSetInputMode(win, GLFW_CURSOR, mode);
+}
+
+bool Window::IsShouldClose()
+{
+	return glfwWindowShouldClose(win);
+}
+
+void Window::SetShouldClose(int flag)
+{
+	glfwSetWindowShouldClose(win, flag);
+}
+
+void Window::SwapBuffers()
+{
+	glfwSwapBuffers(win);
+}
diff --git a/src/window/Window.hpp b/src/window/Window.hpp
new file mode 100644
index 0000000..fe3b054
--- /dev/null
+++ b/src/window/Window.hpp
@@ -0,0 +1,26 @@
+#ifndef ENGINE_WINDOW_H
+#define ENGINE_WINDOW_H
+
+class GLFWwindow;
+
+class Window {
+	GLFWwindow *win;
+	int width, height;
+
+	Window(GLFWwindow *a_win, int a_w, int a_h) : win(a_win),
+		width(a_w), height(a_h) { }
+public:
+	~Window() { }
+	GLFWwindow *GetWin() { return win; }
+
+	static Window *Initialize(int width, int height, const char *title);
+
+	void Resize(int w, int h);
+	void MakeContextCurrent();
+	void SetCursorMode(int mode);
+	bool IsShouldClose();
+	void SetShouldClose(int flag);
+	void SwapBuffers();
+};
+
+#endif /* ENGINE_WINDOW_H */
-- 
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