288 lines
7.8 KiB
C++
288 lines
7.8 KiB
C++
#include <iostream>
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#include "Window.h"
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#include "Events.h"
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#include "../graphics/ImageData.h"
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#include <GL/glew.h>
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#include <GLFW/glfw3.h>
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using glm::vec4;
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GLFWwindow* Window::window = nullptr;
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DisplaySettings* Window::settings = nullptr;
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std::stack<vec4> Window::scissorStack;
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vec4 Window::scissorArea;
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uint Window::width = 0;
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uint Window::height = 0;
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int Window::posX = 0;
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int Window::posY = 0;
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void cursor_position_callback(GLFWwindow*, double xpos, double ypos) {
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if (Events::_cursor_started) {
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Events::deltaX += xpos - Events::x;
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Events::deltaY += ypos - Events::y;
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}
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else {
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Events::_cursor_started = true;
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}
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Events::x = xpos;
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Events::y = ypos;
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}
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void mouse_button_callback(GLFWwindow*, int button, int action, int) {
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if (action == GLFW_PRESS) {
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Events::_keys[_MOUSE_BUTTONS + button] = true;
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Events::_frames[_MOUSE_BUTTONS + button] = Events::_current;
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}
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else if (action == GLFW_RELEASE) {
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Events::_keys[_MOUSE_BUTTONS + button] = false;
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Events::_frames[_MOUSE_BUTTONS + button] = Events::_current;
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}
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}
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void key_callback(GLFWwindow*, int key, int scancode, int action, int /*mode*/) {
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if (key == GLFW_KEY_UNKNOWN) return;
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if (action == GLFW_PRESS) {
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Events::_keys[key] = true;
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Events::_frames[key] = Events::_current;
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Events::pressedKeys.push_back(key);
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}
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else if (action == GLFW_RELEASE) {
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Events::_keys[key] = false;
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Events::_frames[key] = Events::_current;
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}
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else if (action == GLFW_REPEAT) {
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Events::pressedKeys.push_back(key);
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}
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}
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void scroll_callback(GLFWwindow*, double xoffset, double yoffset) {
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Events::scroll += yoffset;
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}
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bool Window::isMaximized() {
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return glfwGetWindowAttrib(window, GLFW_MAXIMIZED);
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}
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void window_size_callback(GLFWwindow*, int width, int height) {
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glViewport(0, 0, width, height);
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Window::width = width;
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Window::height = height;
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if (!Window::isFullscreen() && !Window::isMaximized()) {
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Window::getSettings()->width = width;
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Window::getSettings()->height = height;
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}
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Window::resetScissor();
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}
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void character_callback(GLFWwindow* window, unsigned int codepoint){
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Events::codepoints.push_back(codepoint);
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}
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int Window::initialize(DisplaySettings& settings){
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Window::settings = &settings;
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Window::width = settings.width;
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Window::height = settings.height;
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glfwInit();
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);
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glfwWindowHint(GLFW_SAMPLES, settings.samples);
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window = glfwCreateWindow(width, height, settings.title, nullptr, nullptr);
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if (window == nullptr){
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std::cerr << "Failed to create GLFW Window" << std::endl;
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glfwTerminate();
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return -1;
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}
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glfwMakeContextCurrent(window);
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glewExperimental = GL_TRUE;
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if (glewInit() != GLEW_OK){
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std::cerr << "Failed to initialize GLEW" << std::endl;
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return -1;
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}
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glViewport(0,0, width, height);
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glClearColor(0.0f,0.0f,0.0f, 1);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glEnable(GL_BLEND);
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glDisable(GL_DEPTH_TEST);
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glDisable(GL_CULL_FACE);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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Events::initialize();
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glfwSetKeyCallback(window, key_callback);
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glfwSetMouseButtonCallback(window, mouse_button_callback);
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glfwSetCursorPosCallback(window, cursor_position_callback);
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glfwSetWindowSizeCallback(window, window_size_callback);
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glfwSetCharCallback(window, character_callback);
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glfwSetScrollCallback(window, scroll_callback);
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if (settings.fullscreen) {
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GLFWmonitor* monitor = glfwGetPrimaryMonitor();
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, GLFW_DONT_CARE);
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}
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glfwSwapInterval(settings.swapInterval);
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const GLubyte* vendor = glGetString(GL_VENDOR);
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const GLubyte* renderer = glGetString(GL_RENDERER);
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std::cout << "GL Vendor: " << (char*)vendor << std::endl;
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std::cout << "GL Renderer: " << (char*)renderer << std::endl;
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return 0;
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}
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void Window::clear() {
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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}
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void Window::clearDepth() {
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glClear(GL_DEPTH_BUFFER_BIT);
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}
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void Window::setBgColor(glm::vec3 color) {
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glClearColor(color.r, color.g, color.b, 1.0f);
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}
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void Window::viewport(int x, int y, int width, int height){
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glViewport(x, y, width, height);
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}
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void Window::setCursorMode(int mode){
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glfwSetInputMode(window, GLFW_CURSOR, mode);
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}
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void Window::resetScissor() {
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scissorArea = vec4(0.0f, 0.0f, width, height);
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scissorStack = std::stack<vec4>();
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glDisable(GL_SCISSOR_TEST);
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}
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void Window::pushScissor(vec4 area) {
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if (scissorStack.empty()) {
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glEnable(GL_SCISSOR_TEST);
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}
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scissorStack.push(scissorArea);
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area.z += area.x;
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area.w += area.y;
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area.x = fmax(area.x, scissorArea.x);
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area.y = fmax(area.y, scissorArea.y);
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area.z = fmin(area.z, scissorArea.z);
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area.w = fmin(area.w, scissorArea.w);
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if (area.z < 0.0f || area.w < 0.0f) {
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glScissor(0, 0, 0, 0);
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} else {
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glScissor(area.x, Window::height-area.w,
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std::max(0, int(area.z-area.x)),
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std::max(0, int(area.w-area.y)));
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}
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scissorArea = area;
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}
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void Window::popScissor() {
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if (scissorStack.empty()) {
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std::cerr << "warning: extra Window::popScissor call" << std::endl;
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return;
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}
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vec4 area = scissorStack.top();
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scissorStack.pop();
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if (area.z < 0.0f || area.w < 0.0f) {
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glScissor(0, 0, 0, 0);
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} else {
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glScissor(area.x, Window::height-area.w,
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std::max(0, int(area.z-area.x)),
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std::max(0, int(area.w-area.y)));
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}
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if (scissorStack.empty()) {
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glDisable(GL_SCISSOR_TEST);
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}
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scissorArea = area;
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}
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void Window::terminate(){
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Events::finalize();
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glfwTerminate();
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}
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bool Window::isShouldClose(){
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return glfwWindowShouldClose(window);
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}
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void Window::setShouldClose(bool flag){
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glfwSetWindowShouldClose(window, flag);
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}
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void Window::swapInterval(int interval){
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glfwSwapInterval(interval);
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}
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void Window::toggleFullscreen(){
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settings->fullscreen = !settings->fullscreen;
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GLFWmonitor* monitor = glfwGetPrimaryMonitor();
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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if (Events::_cursor_locked) Events::toggleCursor();
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if (settings->fullscreen) {
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glfwGetWindowPos(window, &posX, &posY);
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glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, GLFW_DONT_CARE);
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}
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else {
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glfwSetWindowMonitor(window, nullptr, posX, posY, settings->width, settings->height, GLFW_DONT_CARE);
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glfwSetWindowAttrib(window, GLFW_MAXIMIZED, GLFW_FALSE);
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}
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double xPos, yPos;
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glfwGetCursorPos(window, &xPos, &yPos);
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Events::x = xPos;
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Events::y = yPos;
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}
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bool Window::isFullscreen() {
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return settings->fullscreen;
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}
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void Window::swapBuffers(){
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glfwSwapBuffers(window);
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Window::resetScissor();
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}
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double Window::time() {
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return glfwGetTime();
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}
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DisplaySettings* Window::getSettings() {
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return settings;
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}
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ImageData* Window::takeScreenshot() {
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ubyte* data = new ubyte[width * height * 3];
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, data);
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return new ImageData(ImageFormat::rgb888, width, height, data);
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}
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bool Window::tryToMaximize(GLFWwindow* window, GLFWmonitor* monitor) {
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glm::ivec4 windowFrame(0);
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glm::ivec4 workArea(0);
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glfwGetWindowFrameSize(window, &windowFrame.x, &windowFrame.y, &windowFrame.z, &windowFrame.w);
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glfwGetMonitorWorkarea(monitor, &workArea.x, &workArea.y, &workArea.z, &workArea.w);
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if (Window::width > (uint)workArea.z) Window::width = (uint)workArea.z;
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if (Window::height > (uint)workArea.w) Window::height = (uint)workArea.w;
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if (Window::width >= (uint)(workArea.z - (windowFrame.x + windowFrame.z)) &&
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Window::height >= (uint)(workArea.w - (windowFrame.y + windowFrame.w))) {
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glfwMaximizeWindow(window);
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return true;
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}
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glfwSetWindowSize(window, Window::width, Window::height);
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glfwSetWindowPos(window, workArea.x + (workArea.z - Window::width) / 2,
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workArea.y + (workArea.w - Window::height) / 2 + windowFrame.y / 2);
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return false;
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} |