initial commit

src/gfx/Window.cpp

@@ -0,0 +1,52 @@
+#include "Window.hpp"
+
+#include <stdexcept>
+#include <imgui/backends/imgui_impl_glfw.h>
+#include <imgui/backends/imgui_impl_opengl3.h>
+#include <imgui/imgui.h>
+
+Window::Window(uint16_t width, uint16_t height, const std::string& title) :
+	handle(nullptr)
+{
+	handle = glfwCreateWindow(width, height, title.c_str(), nullptr, nullptr);
+	if (handle == nullptr)
+	{
+		const char* err;
+		int code = glfwGetError(&err);
+		throw std::runtime_error(std::string(err) + " (" + std::to_string(code) + ")");
+	}
+
+	glfwMakeContextCurrent(handle);
+}
+
+Window::~Window()
+{
+	if(handle)
+		glfwDestroyWindow(handle);
+}
+
+void Window::Begin()
+{
+	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	ImGui_ImplOpenGL3_NewFrame();
+	ImGui_ImplGlfw_NewFrame();
+	ImGui::NewFrame();
+}
+
+void Window::End()
+{
+	ImGui::Render();
+	ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+	if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+	{
+		GLFWwindow* backup_current_context = glfwGetCurrentContext();
+		ImGui::UpdatePlatformWindows();
+		ImGui::RenderPlatformWindowsDefault();
+		glfwMakeContextCurrent(backup_current_context);
+	}
+
+	glfwSwapBuffers(handle);
+}