144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
#include <GLFW/glfw3.h>
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#include <log.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "types.h"
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#include "window.h"
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static void init_glfw(void (*error_callback)(int, const char *)) {
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log_info("[GLFW] Initializing...");
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// set errors handler
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glfwSetErrorCallback(error_callback);
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// print current GLFW version
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log_info("[GLFW] %s", glfwGetVersionString());
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// init GLFW
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if (!glfwInit()) {
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log_error("[GLFW] Initialization failed");
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exit(EXIT_FAILURE);
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}
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log_info("[GLFW] Initialized...");
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}
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static GLFWmonitor *get_monitor(unsigned char monitor_index) {
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int count;
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GLFWmonitor **monitors;
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// detect monitors
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monitors = glfwGetMonitors(&count);
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// check selected monitor availability
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if (monitor_index >= count) {
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log_error("[GLFW] Screen %d is out of range [0-%d]", monitor_index,
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count - 1);
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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return monitors[monitor_index];
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}
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static GLFWwindow *
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create_window(GLFWmonitor *monitor, char *title, Window *shared_context,
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void (*key_callback)(Window *, int, int, int, int)) {
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GLFWwindow *window;
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log_info("[GLFW] Creating window...");
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// Window related hints
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glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
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glfwWindowHint(GLFW_FOCUSED, GLFW_FALSE);
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glfwWindowHint(GLFW_CENTER_CURSOR, GLFW_FALSE);
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glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE);
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// Context related hints
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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// create fullscreen window in selected monitor
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window = glfwCreateWindow(1, 1, title, monitor, shared_context);
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// handle window creation fail
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if (window == NULL) {
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log_error("[GLFW] Window or context creation failed");
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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// set keyboard handler
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glfwSetKeyCallback(window, key_callback);
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// hide cursor
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glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
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log_info("[GLFW] Window created");
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return window;
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}
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static void use_window(GLFWwindow *window) { glfwMakeContextCurrent(window); }
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void window_startup(void (*error_callback)(int, const char *)) {
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init_glfw(error_callback);
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}
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void window_terminate() {
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log_info("[GLFW] Terminating library...");
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glfwTerminate();
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}
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Window *window_init(char *title, unsigned char monitor_index, bool windowed,
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Window *shared_context,
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void (*key_callback)(Window *, int, int, int, int)) {
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GLFWwindow *window;
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GLFWmonitor *monitor;
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monitor = windowed ? NULL : get_monitor(monitor_index);
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window = create_window(monitor, title, shared_context, key_callback);
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use_window(window);
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return window;
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}
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void window_update_title(Window *window, char *title) {
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glfwSetWindowTitle(window, title);
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}
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void window_refresh(Window *window) {
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// swap front and back buffers
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glfwSwapBuffers(window);
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}
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void window_events() { glfwPollEvents(); }
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double window_get_time() { return glfwGetTime(); }
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void window_use(Window *window, SharedContext *context) {
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glfwMakeContextCurrent(window);
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glfwGetFramebufferSize(window, &context->width, &context->height);
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context->internal_width = (int)(context->internal_height *
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(float)context->width / (context->height));
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}
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void window_close(Window *window) {
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log_info("[GLFW] Closing window...");
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glfwSetWindowShouldClose(window, GLFW_TRUE);
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}
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bool window_should_close(Window *window) {
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return glfwWindowShouldClose(window) == GLFW_TRUE;
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}
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bool window_escape_key(int key, int action) {
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return key == GLFW_KEY_ESCAPE && action == GLFW_PRESS;
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}
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bool window_char_key(int key, int action, const int char_code) {
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return key == char_code && action == GLFW_PRESS;
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} |