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#include "Window.h"
#include <cstdint>
#include <iostream>
namespace Donut
{
static bool s_GLFWInitialized = false;
static uint32_t s_GLFWWindowCount = 0;
Window::Window(const std::string& title, int width, int height)
: m_Title(title), m_Width(width),
m_Height(height), m_IsClosed(false)
{
Init();
}
Window::~Window()
{
Shutdown();
}
void Window::Init()
{
if (!s_GLFWInitialized)
{
int success = glfwInit();
if (!success)
{
std::cout << "Could not initialize GLFW!" << std::endl;
return;
}
s_GLFWInitialized = true;
}
m_Window = glfwCreateWindow(m_Width, m_Height, m_Title.c_str(), nullptr, nullptr);
if (!m_Window)
{
std::cout << "Could not create GLFW window!" << std::endl;
glfwTerminate();
return;
}
glfwMakeContextCurrent(m_Window);
glfwSetWindowUserPointer(m_Window, this);
glfwSetErrorCallback(GLFWErrorCallback);
glfwSetWindowCloseCallback(m_Window, GLFWWindowCloseCallback);
glfwSetWindowSizeCallback(m_Window, GLFWWindowSizeCallback);
glfwSetWindowFocusCallback(m_Window, GLFWWindowFocusCallback);
glfwSetWindowPosCallback(m_Window, GLFWWindowPosCallback);
glfwSetKeyCallback(m_Window, GLFWKeyCallback);
glfwSetCharCallback(m_Window, GLFWCharCallback);
glfwSetMouseButtonCallback(m_Window, GLFWMouseButtonCallback);
glfwSetScrollCallback(m_Window, GLFWMouseScrollCallback);
glfwSetCursorPosCallback(m_Window, GLFWCursorPosCallback);
s_GLFWWindowCount++;
}
void Window::Shutdown()
{
glfwDestroyWindow(m_Window);
s_GLFWWindowCount--;
if (s_GLFWWindowCount == 0)
{
glfwTerminate();
s_GLFWInitialized = false;
}
}
void Window::OnUpdate() const
{
glfwPollEvents();
glfwSwapBuffers(m_Window);
}
bool Window::ShouldClose() const
{
return glfwWindowShouldClose(m_Window) || m_IsClosed;
}
void Window::GLFWErrorCallback(int error, const char* description)
{
std::cout << "GLFW Error (" << error << "): " << description << std::endl;
}
void Window::GLFWWindowCloseCallback(GLFWwindow* window)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
WindowCloseEvent event;
win->m_EventHandler.OnEvent(event);
}
void Window::GLFWWindowSizeCallback(GLFWwindow* window, int width, int height)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
win->m_Width = width;
win->m_Height = height;
WindowResizeEvent event(width, height);
win->m_EventHandler.OnEvent(event);
}
void Window::GLFWWindowFocusCallback(GLFWwindow* window, int focused)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
if (focused)
{
WindowFocusEvent event;
win->m_EventHandler.OnEvent(event);
}
else
{
WindowLostFocusEvent event;
win->m_EventHandler.OnEvent(event);
}
}
void Window::GLFWWindowPosCallback(GLFWwindow* window, int xpos, int ypos)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
WindowMovedEvent event(xpos, ypos);
win->m_EventHandler.OnEvent(event);
}
void Window::GLFWKeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
switch (action)
{
case GLFW_PRESS:
{
KeyPressedEvent event(key, false);
win->m_EventHandler.OnEvent(event);
} break;
case GLFW_RELEASE:
{
KeyReleasedEvent event(key);
win->m_EventHandler.OnEvent(event);
} break;
case GLFW_REPEAT:
{
KeyPressedEvent event(key, true);
win->m_EventHandler.OnEvent(event);
} break;
}
}
void Window::GLFWCharCallback(GLFWwindow* window, unsigned int keycode)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
KeyTypedEvent event(keycode);
win->m_EventHandler.OnEvent(event);
}
void Window::GLFWMouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
switch (action)
{
case GLFW_PRESS:
{
MouseButtonPressedEvent event(button);
win->m_EventHandler.OnEvent(event);
} break;
case GLFW_RELEASE:
{
MouseButtonReleasedEvent event(button);
win->m_EventHandler.OnEvent(event);
break;
}
}
}
void Window::GLFWMouseScrollCallback(GLFWwindow* window, double xOffset, double yOffset)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
MouseScrolledEvent event((float)xOffset, (float)yOffset);
win->m_EventHandler.OnEvent(event);
}
void Window::GLFWCursorPosCallback(GLFWwindow* window, double xPos, double yPos)
{
Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
MouseMovedEvent event((float)xPos, (float)yPos);
win->m_EventHandler.OnEvent(event);
}
}
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