Implement basic WindowDriver for Windows platform

engine/src/platform/windows/window_driver.cpp

@@ -8,21 +8,127 @@
 
 #include "platform/windows/window_driver.h"
 
+#include "platform/windows/window_structs.h"
+
 #ifdef NOVA_VULKAN
+#include "drivers/vulkan/render_driver.h"
+#include "drivers/vulkan/render_structs.h"
+
 #include <vulkan/vulkan.h>
 #include <vulkan/vulkan_win32.h>
 #endif
 
 #include <nova/core/debug.h>
+#include <nova/render/render_driver.h>
+
+namespace {
+	static constexpr LPCSTR WINDOW_CLASS_NAME = "NOVA_WindowClass";
+}
 
 using namespace Nova;
 
 Win32WindowDriver::Win32WindowDriver() {
 	NOVA_AUTO_TRACE();
+
+	WNDCLASSEX wc = {};
+	wc.cbSize = sizeof(WNDCLASSEX);
+	wc.style = CS_HREDRAW | CS_VREDRAW;
+	wc.lpfnWndProc = _window_proc;
+	wc.hInstance = GetModuleHandle(nullptr);
+	wc.lpszClassName = WINDOW_CLASS_NAME;
+
+	if (!RegisterClassEx(&wc)) {
+		throw std::runtime_error("Failed to register window class");
+	}
 }
 
 Win32WindowDriver::~Win32WindowDriver() {
 	NOVA_AUTO_TRACE();
+	UnregisterClass(WINDOW_CLASS_NAME, GetModuleHandle(nullptr));
+}
+
+WindowAPI Win32WindowDriver::get_api() const {
+	return WindowAPI::WINDOWS;
+}
+
+std::string Win32WindowDriver::get_api_name() const {
+	return "Win32";
+}
+
+void Win32WindowDriver::poll_events() {
+	MSG msg;
+	while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
+		TranslateMessage(&msg);
+		DispatchMessage(&msg);
+	}
+}
+
+void Win32WindowDriver::beep() {
+	MessageBeep(MB_OK);
+}
+
+u32 Win32WindowDriver::get_window_count() const {
+	return static_cast<u32>(m_windows.size());
+}
+
+WindowID Win32WindowDriver::create_window(const std::string& p_title, u32 p_width, u32 p_height) {
+	NOVA_AUTO_TRACE();
+
+	RECT rect = {0, 0, static_cast<LONG>(p_width), static_cast<LONG>(p_height)};
+	AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
+
+	HWND handle = CreateWindowEx(
+		0,
+		WINDOW_CLASS_NAME,
+		p_title.c_str(),
+		WS_OVERLAPPEDWINDOW,
+		CW_USEDEFAULT,
+		CW_USEDEFAULT,
+		rect.right - rect.left,
+		rect.bottom - rect.top,
+		nullptr,
+		nullptr,
+		GetModuleHandle(nullptr),
+		this
+	);
+
+	Window* window = new Window();
+	window->width = p_width;
+	window->height = p_height;
+	window->handle = handle;
+
+	ShowWindow(handle, SW_SHOW);
+	UpdateWindow(handle);
+
+	m_windows[handle] = window;
+	return window;
+}
+
+void Win32WindowDriver::destroy_window(WindowID p_window) {
+	NOVA_AUTO_TRACE();
+	NOVA_ASSERT(p_window);
+	DestroyWindow(p_window->handle);
+	m_windows.erase(p_window->handle);
+}
+
+void Win32WindowDriver::set_window_title(WindowID p_window, const std::string& p_title) {
+	NOVA_AUTO_TRACE();
+	NOVA_ASSERT(p_window);
+	SetWindowText(p_window->handle, p_title.c_str());
+}
+
+void Win32WindowDriver::set_window_size(WindowID p_window, u32 p_width, u32 p_height) {
+	NOVA_AUTO_TRACE();
+	NOVA_ASSERT(p_window);
+	RECT rect = {0, 0, static_cast<LONG>(p_width), static_cast<LONG>(p_height)};
+	AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
+	SetWindowPos(p_window->handle, nullptr, 0, 0, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER | SWP_NOMOVE);
+}
+
+void Win32WindowDriver::set_window_position(WindowID p_window, i32 p_x, i32 p_y) {
+	NOVA_AUTO_TRACE();
+	NOVA_ASSERT(p_window);
+	SetWindowPos(p_window->handle, nullptr, p_x, p_y, 0, 0, SWP_NOZORDER | SWP_NOSIZE);
 }
 
 const char* Win32WindowDriver::get_surface_extension() const {
@@ -33,4 +139,84 @@ const char* Win32WindowDriver::get_surface_extension() const {
 #endif
 }
 
+SurfaceID Win32WindowDriver::create_surface(WindowID p_window, RenderDriver* p_driver) {
+	NOVA_AUTO_TRACE();
+	NOVA_ASSERT(p_window);
+	NOVA_ASSERT(p_driver);
+	NOVA_ASSERT(p_driver->get_api() == RenderAPI::VULKAN);
+
+#ifdef NOVA_VULKAN
+	VkWin32SurfaceCreateInfoKHR create {};
+	create.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
+	create.hinstance = GetModuleHandle(nullptr);
+	create.hwnd = p_window->handle;
+
+	const auto vkrd = static_cast<VulkanRenderDriver*>(p_driver);
+	Surface* surface = new Surface();
+
+	if (vkCreateWin32SurfaceKHR(vkrd->get_instance(), &create, vkrd->get_allocator(VK_OBJECT_TYPE_SURFACE_KHR), &surface->handle)
+		!= VK_SUCCESS) {
+		throw std::runtime_error("Failed to create Vulkan surface");
+	}
+
+	return surface;
+#else
+	return nullptr;
+#endif
+}
+
+LRESULT Win32WindowDriver::_handle_message(HWND p_handle, UINT p_msg, WPARAM p_wparam, LPARAM p_lparam) {
+	auto iter = m_windows.find(p_handle);
+	if (iter == m_windows.end()) {
+		return DefWindowProc(p_handle, p_msg, p_wparam, p_lparam);
+	}
+
+	WindowID window = iter->second;
+
+	switch (p_msg) {
+		case WM_DESTROY: {
+			NOVA_DEBUG("Window event: DESTROYED");
+			if (m_windows.empty()) {
+				PostQuitMessage(0);
+			}
+			return 0;
+		}
+		case WM_SIZE: {
+			int width = LOWORD(p_lparam);
+			int height = HIWORD(p_lparam);
+			if (width != window->width || height != window->height) {
+				window->width = width;
+				window->height = height;
+				NOVA_DEBUG("Window event: RESIZED ({}x{})", width, height);
+			}
+			return 0;
+		}
+		case WM_CLOSE: {
+			NOVA_DEBUG("Window event: CLOSED");
+			destroy_window(window);
+			return 0;
+		}
+		default:
+			return DefWindowProc(p_handle, p_msg, p_wparam, p_lparam);
+	}
+}
+
+LRESULT CALLBACK Win32WindowDriver::_window_proc(HWND p_handle, UINT p_msg, WPARAM p_wparam, LPARAM p_lparam) {
+	Win32WindowDriver* driver = nullptr;
+
+	if (p_msg == WM_NCCREATE) {
+		CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(p_lparam);
+		driver = static_cast<Win32WindowDriver*>(cs->lpCreateParams);
+		SetWindowLongPtr(p_handle, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(driver));
+	} else {
+		driver = reinterpret_cast<Win32WindowDriver*>(GetWindowLongPtr(p_handle, GWLP_USERDATA));
+	}
+
+	if (driver) {
+		return driver->_handle_message(p_handle, p_msg, p_wparam, p_lparam);
+	}
+
+	return DefWindowProc(p_handle, p_msg, p_wparam, p_lparam);
+}
+
 #endif // NOVA_WINDOWS