Implementado ventana de log ImGUI

.gitignore

 build/
 pr01
+
+imgui.ini

CMakeLists.txt

-cmake_minimum_required(VERSION 3.27)
+cmake_minimum_required(VERSION 3.25)
 project(pr01)
 
 set(CMAKE_CXX_STANDARD 17)

gui.cpp

@@ -27,5 +27,27 @@ namespace PAG {
 		ImGui::DestroyContext();
 	}
 
+	void GUI::addVentana(std::shared_ptr<Ventana> ventana) {
+		ventanas.push_back(ventana);
+	}
+
+	void GUI::render() {
+		ImGui_ImplOpenGL3_NewFrame();
+		ImGui_ImplGlfw_NewFrame();
+		ImGui::NewFrame();
+
+		for (auto &ventana : ventanas) {
+			ventana->render();
+		}
+
+		ImGui::Render();
+		ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+	}
+
+	void GUI::addMouseButtonEvent(int button, bool click) {
+		ImGui::GetIO().AddMouseButtonEvent(button, click);
+	}
+
+
 	GUI::GUI() {};
 }

gui.h

@@ -3,6 +3,11 @@
 #include "glad/glad.h"
 #include <GLFW/glfw3.h>
 
+#include <memory>
+#include <vector>
+
+#include "ventana.h"
+
 namespace PAG {
 	class GUI {
 	public:
@@ -14,7 +19,14 @@ namespace PAG {
 		void init(GLFWwindow *);
 		void shutdown();
 
+		void addVentana(std::shared_ptr<Ventana>);
+		void render();
+
+		void addMouseButtonEvent(int button, bool click);
+
 	private:
 		GUI();
+
+		std::vector<std::shared_ptr<Ventana>> ventanas;
 	};
 };

log.cpp

+#include "log.h"
+
+namespace PAG {
+	Logger log = Logger();
+}

log.h

+#pragma once
+
+#include <sstream>
+#include <iostream>
+
+namespace PAG {
+	// Clase que imprime a stderr y a un std::string
+	class Logger : public std::ostream {
+	public:
+		Logger() : buffer(), std::ostream(&buffer) {};
+
+		Logger(const Logger &) = delete;
+		void operator=(const Logger &) = delete;
+
+		std::string str() {
+			return buffer.full_log();
+		}
+	private:
+		class Buffer : public std::stringbuf {
+			std::stringstream inner_full_log;
+		public:
+			int sync() override {
+				std::cerr << str();
+				std::cerr.flush();
+
+				inner_full_log << str();
+
+				str("");
+
+				return 0;
+			}
+
+			std::string full_log() {
+				return inner_full_log.str();
+			}
+		};
+
+		Buffer buffer;
+	};
+
+	extern Logger log;
+};

main.cpp

@@ -7,17 +7,19 @@
 
 #include "renderer.h"
 #include "gui.h"
+#include "log.h"
+#include "ventana_log.h"
 
 // Helper que muestra un mensaje y cierra el programa
 #define panic(message) { \
-	std::cout << __FILE__ << ":" << __LINE__ << " : panic!" << std::endl;\
-	std::cout << __FILE__ << ":" << __LINE__ << " : " << message << std::endl;\
+	PAG::log << __FILE__ << ":" << __LINE__ << " : panic!" << std::endl;\
+	PAG::log << __FILE__ << ":" << __LINE__ << " : " << message << std::endl;\
 	exit(-1);\
 }
 
 // Callback cuando ocurre un error en GLFW
 void error_callback(int errno, const char *desc) {
-	std::cout << "GLFW error " << errno << ": " << desc << std::endl;
+	PAG::log << "GLFW error " << errno << ": " << desc << std::endl;
 }
 
 void window_refresh_callback(GLFWwindow *window) {
@@ -25,27 +27,29 @@ void window_refresh_callback(GLFWwindow *window) {
 
 	glfwSwapBuffers(window);
 
-	std::cout << "Refresh callback called" << std::endl;
+	PAG::log << "Refresh callback called" << std::endl;
 }
 
 void framebuffer_size_callback(GLFWwindow *window, int width, int height) {
 	PAG::Renderer::getInstance().setViewport(width, height);
 
-	std::cout << "Resize callback called. New size: " << width << ", " << height << std::endl;
+	PAG::log << "Resize callback called. New size: " << width << ", " << height << std::endl;
 }
 
 void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods) {
 	if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
 		glfwSetWindowShouldClose(window, GLFW_TRUE);
 	}
-	std::cout << "Key callback called" << std::endl;
+	PAG::log << "Key callback called" << std::endl;
 }
 
 void mouse_button_callback(GLFWwindow *window, int button, int action, int mods) {
 	if (action == GLFW_PRESS) {
-		std::cout << "Pulsado el botón: mouse " << button << std::endl;
+		PAG::log << "Pulsado el botón: mouse " << button << std::endl;
+		PAG::GUI::getInstance().addMouseButtonEvent(button, true);
 	} else if (action == GLFW_RELEASE) {
-		std::cout << "Soltado el botón: mouse " << button << std::endl;
+		PAG::log << "Soltado el botón: mouse " << button << std::endl;
+		PAG::GUI::getInstance().addMouseButtonEvent(button, false);
 	}
 }
 
@@ -55,7 +59,7 @@ const double gradient_colors[][3] = {{0.6, 0.6, 0.6}, {1, 0.65, 0}};
 void scroll_callback(GLFWwindow *window, double xoffset, double yoffset) {
 	static double position_in_gradient = 0;
 
-	std::cout << "Movida la rueda del raton "
+	PAG::log << "Movida la rueda del raton "
 		<< xoffset << " unidades en horizontal y "
 		<< yoffset << " unidades en vertical" << std::endl;
 
@@ -79,7 +83,7 @@ void scroll_callback(GLFWwindow *window, double xoffset, double yoffset) {
 }
 
 int main() {
-	std::cout << "Starting Application PAG - Prueba 01" << std::endl;
+	PAG::log << "Starting Application PAG - Prueba 01" << std::endl;
 
 	glfwSetErrorCallback((GLFWerrorfun) error_callback);
 
@@ -109,13 +113,14 @@ int main() {
 	}
 
 	PAG::GUI::getInstance().init(window);
+	PAG::GUI::getInstance().addVentana(std::make_shared<PAG::VentanaLog>(PAG::VentanaLog()));
 
 	auto &renderer = PAG::Renderer::getInstance();
 
-	std::cout << renderer.getRendererName() << std::endl;
-	std::cout << renderer.getVendor() << std::endl;
-	std::cout << renderer.getVersion() << std::endl;
-	std::cout << renderer.getShadingLanguageVersion() << std::endl;
+	PAG::log << renderer.getRendererName() << std::endl;
+	PAG::log << renderer.getVendor() << std::endl;
+	PAG::log << renderer.getVersion() << std::endl;
+	PAG::log << renderer.getShadingLanguageVersion() << std::endl;
 
 	glfwSetWindowRefreshCallback(window, window_refresh_callback);
 	glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
@@ -131,12 +136,14 @@ int main() {
 	while (!glfwWindowShouldClose(window)) {
 		renderer.clear();
 
+		PAG::GUI::getInstance().render();
+
 		glfwSwapBuffers(window);
 
 		glfwPollEvents();
 	}
 
-	std::cout << "Finishing application pag prueba" << std::endl;
+	PAG::log << "Finishing application pag prueba" << std::endl;
 
 	PAG::GUI::getInstance().shutdown();
 	glfwDestroyWindow(window);

ventana.h

+#pragma once
+
+namespace PAG {
+	class Ventana {
+	public:
+		virtual void render() = 0;
+
+		virtual ~Ventana() = default;
+	};
+}

ventana_log.cpp

+#include "ventana_log.h"
+
+#include <imgui.h>
+
+#include "log.h"
+
+namespace PAG {
+	void VentanaLog::render() {
+		ImGui::SetNextWindowPos(ImVec2(10, 10), ImGuiCond_FirstUseEver);
+		ImGui::SetNextWindowSize(ImVec2(600, 300), ImGuiCond_FirstUseEver);
+
+		if (ImGui::Begin("Mensajes")) {
+			ImGui::SetWindowFontScale(1.0);
+
+			ImGui::Text(PAG::log.str().c_str());
+		}
+		ImGui::End();
+	}
+}

ventana_log.h

+#pragma once
+
+#include "ventana.h"
+
+namespace PAG {
+	class VentanaLog : public Ventana {
+	public:
+		void render() override;
+	};
+}