init

window.cpp

@@ -0,0 +1,157 @@
+#include "window.hpp"
+#include <algorithm>
+#include <GL/glew.h>
+
+static void internalFramebufferCallback([[maybe_unused]] GLFWwindow *glfWwindow, const int width, const int height) {
+    glViewport(0, 0, width, height);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+}
+
+namespace gui {
+    static bool init = false;
+
+    std::uint_fast8_t Window::count_instance = 0;
+
+    Window::Window(const bool debugOpengl,
+                   const GLFWframebuffersizefun framebufferCallback,
+                   GLFWwindow *shared,
+                   const std::initializer_list<modulesType::value_type> initializer) : modules(initializer) {
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+        glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, debugOpengl ? GLFW_TRUE : GLFW_FALSE);
+        wwindow = std::unique_ptr<GLFWwindow, decltype(&delete_glfw_window)>(
+            glfwCreateWindow(720, 1280, "Billy Sheet tracker", nullptr, shared),
+            delete_glfw_window
+        );
+        if (!wwindow) {
+            glfwTerminate();
+            init = false;
+            count_instance = 0;
+            return;
+        }
+        glfwMakeContextCurrent(wwindow.get());
+        glewExperimental = true;
+        if (glewInit() != GLEW_OK) {
+            wwindow.reset(nullptr);
+            glfwTerminate();
+            init = false;
+            count_instance = 0;
+            return;
+        }
+        ++count_instance;
+        glfwSetFramebufferSizeCallback(wwindow.get(),
+            framebufferCallback != nullptr ? framebufferCallback : internalFramebufferCallback);
+
+        glfwSwapInterval(1); // VSync on
+        glfwSetKeyCallback(wwindow.get(), key_callback);
+        glfwSetScrollCallback(wwindow.get(), scroll_callback);
+        glfwSetCursorPosCallback(wwindow.get(), cursor_position_callback);
+        glfwSetWindowSizeCallback(wwindow.get(), window_size_callback);
+        glfwSetWindowPosCallback(wwindow.get(), window_pos_callback);
+        glfwSetWindowUserPointer(wwindow.get(), &modules);
+    }
+
+    Window::~Window() noexcept {
+        if (count_instance > 0) {
+            --count_instance;
+        }
+    }
+
+    const std::unique_ptr<GLFWwindow, decltype(&Window::delete_glfw_window)> &Window::get_window() const noexcept {
+        return wwindow;
+    }
+
+    bool Window::should_close() const noexcept {
+        return glfwWindowShouldClose(wwindow.get());
+    }
+
+    void Window::swap_buffers() const noexcept {
+        glfwSwapBuffers(wwindow.get());
+    }
+
+    void Window::key_callback(GLFWwindow *window, const int key, const int scancode, const int action, const int mods) {
+        auto *modules = static_cast<modulesType *>(glfwGetWindowUserPointer(window));
+        std::ranges::for_each(*modules,
+            [=](modulesType::reference item) { item.second->key_callback(key, scancode, action, mods); });
+    }
+
+    void Window::cursor_position_callback(GLFWwindow *window, const double xpos, const double ypos) {
+        auto *modules = static_cast<modulesType *>(glfwGetWindowUserPointer(window));
+        std::ranges::for_each(*modules,
+            [=](modulesType::reference item) { item.second->cursor_position_callback(xpos, ypos); });
+    }
+
+    void Window::scroll_callback(GLFWwindow *window, const double xoffset, const double yoffset) {
+        auto *modules = static_cast<modulesType *>(glfwGetWindowUserPointer(window));
+        std::ranges::for_each(*modules,
+            [=](modulesType::reference item) { item.second->scroll_callback(xoffset, yoffset); });
+    }
+
+    void Window::window_size_callback(GLFWwindow *window, const int width, const int height) {
+        auto *modules = static_cast<modulesType *>(glfwGetWindowUserPointer(window));
+        std::ranges::for_each(*modules,
+            [=](modulesType::reference item) { item.second->window_size(width, height); });
+    }
+
+    void Window::window_pos_callback(GLFWwindow *window, const int xpos, const int ypos) {
+        auto *modules = static_cast<modulesType *>(glfwGetWindowUserPointer(window));
+        std::ranges::for_each(*modules,
+            [=](modulesType::reference item) { item.second->window_pos(xpos, ypos); });
+    }
+
+    void Window::add_module(data::BasicData &module) {
+        modules.emplace(module.name, &module);
+    }
+
+    void Window::delete_module(const std::string &module) {
+        modules.erase(module);
+    }
+
+    void Window::get_context() const noexcept {
+        glfwMakeContextCurrent(wwindow.get());
+    }
+
+    std::optional<Window> create_window(
+        const GLFWerrorfun errorCallback,
+        const GLFWframebuffersizefun framebufferCallback,
+        const bool debugOpengl,
+        GLFWwindow *shared,
+        const std::initializer_list<Window::modulesType::value_type> initializer
+    ) noexcept {
+        if (!init) {
+            glfwSetErrorCallback(errorCallback);
+            if (glfwInit() == GLFW_FALSE) {
+                return std::nullopt;
+            }
+            init = true;
+        }
+        if (Window win{ debugOpengl, framebufferCallback, shared, initializer }; win.get_window()) {
+            return win;
+        }
+        return std::nullopt;
+    }
+
+    bool Window::init_glfw(const GLFWerrorfun errorCallback) noexcept {
+        glfwSetErrorCallback(errorCallback);
+        init = glfwInit() == GLFW_TRUE;
+        return init;
+    }
+
+    void color_10_bits() noexcept {
+        glfwWindowHint(GLFW_RED_BITS, 10);
+        glfwWindowHint(GLFW_GREEN_BITS, 10);
+        glfwWindowHint(GLFW_BLUE_BITS, 10);
+    }
+
+    bool check_color_depth(const int color_depth) noexcept {
+        GLint redBits = 0, greenBits = 0, blueBits = 0;
+        glGetIntegerv(GL_RED_BITS, &redBits);
+        glGetIntegerv(GL_GREEN_BITS, &greenBits);
+        glGetIntegerv(GL_BLUE_BITS, &blueBits);
+        return redBits == color_depth && greenBits == color_depth && blueBits == color_depth;
+    }
+
+    void opengl_debug() noexcept {
+        glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
+    }
+}