Magic_Game/core/modules/Window.cpp

526 lines
9.9 KiB
C++

#include "..\e2dmodule.h"
#include "..\e2dmanager.h"
#include "..\e2dobject.h"
#include <imm.h>
#pragma comment (lib ,"imm32.lib")
#define WINDOW_STYLE WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX & ~WS_THICKFRAME
#define REGISTER_CLASS L"Easy2DApp"
e2d::Window * e2d::Window::instance_ = nullptr;
e2d::Window * e2d::Window::GetInstance()
{
if (!instance_)
instance_ = new (std::nothrow) Window;
return instance_;
}
void e2d::Window::DestroyInstance()
{
if (instance_)
{
delete instance_;
instance_ = nullptr;
}
}
e2d::Size e2d::Window::GetScreenSize()
{
int screen_width = ::GetSystemMetrics(SM_CXSCREEN);
int screen_height = ::GetSystemMetrics(SM_CYSCREEN);
Size screen_size(
static_cast<float>(screen_width),
static_cast<float>(screen_height)
);
return std::move(screen_size);
}
e2d::Window::Window()
: hWnd_(nullptr)
, width_(640)
, height_(480)
, title_(L"Easy2D Game")
, icon_id_(0)
, dpi_(0.f)
{
::CoInitialize(nullptr);
// 获取系统 DPI
dpi_ = static_cast<float>(::GetDpiForSystem());
}
e2d::Window::~Window()
{
if (::GetConsoleWindow())
::FreeConsole();
if (hWnd_)
::DestroyWindow(hWnd_);
::CoUninitialize();
}
bool e2d::Window::CheckUnique()
{
HANDLE mutex = ::CreateMutex(nullptr, TRUE, LPCWSTR(L"Easy2DApp-" + title_));
if (mutex == nullptr)
{
WARN("CreateMutex Failed!");
return false;
}
else if (::GetLastError() == ERROR_ALREADY_EXISTS)
{
::CloseHandle(mutex);
return false;
}
return true;
}
e2d::Rect e2d::Window::Locate(int width, int height)
{
Rect result;
RECT wRECT = { 0, 0, LONG(ceil(width * dpi_ / 96.f)), LONG(ceil(height * dpi_ / 96.f)) };
int max_width = ::GetSystemMetrics(SM_CXSCREEN);
int max_height = ::GetSystemMetrics(SM_CYSCREEN);
// 计算合适的窗口大小
::AdjustWindowRectEx(&wRECT, WINDOW_STYLE, FALSE, NULL);
width = static_cast<int>(wRECT.right - wRECT.left);
height = static_cast<int>(wRECT.bottom - wRECT.top);
// 当输入的窗口大小比分辨率大时,给出警告
WARN_IF(max_width < width || max_height < height, "The window Is larger than screen!");
width = std::min(width, max_width);
height = std::min(height, max_height);
float x = float((max_width - width) / 2), y = float((max_height - height) / 2);
return std::move(Rect(x, y, float(width), float(height)));
}
void e2d::Window::Poll()
{
while (::PeekMessage(&msg_, nullptr, 0, 0, PM_REMOVE))
{
::TranslateMessage(&msg_);
::DispatchMessage(&msg_);
}
}
int e2d::Window::GetWidth() const
{
return width_;
}
int e2d::Window::GetHeight() const
{
return height_;
}
e2d::Size e2d::Window::GetSize() const
{
return e2d::Size(float(width_), float(height_));
}
float e2d::Window::GetDpi() const
{
return dpi_;
}
const e2d::String& e2d::Window::GetTitle() const
{
return title_;
}
HWND e2d::Window::GetHWnd()
{
if (!hWnd_)
{
WNDCLASSEX wcex = { 0 };
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.lpszClassName = REGISTER_CLASS;
wcex.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
wcex.lpfnWndProc = Window::WndProc;
wcex.hIcon = nullptr;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = sizeof(LONG_PTR);
wcex.hInstance = HINST_THISCOMPONENT;
wcex.hbrBackground = nullptr;
wcex.lpszMenuName = nullptr;
wcex.hCursor = ::LoadCursor(nullptr, IDC_ARROW);
if (icon_id_ != 0)
{
wcex.hIcon = (HICON)::LoadImage(
HINST_THISCOMPONENT,
MAKEINTRESOURCE(icon_id_),
IMAGE_ICON,
0,
0,
LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_DEFAULTSIZE
);
}
// 注册窗口类
RegisterClassEx(&wcex);
// 计算窗口大小
Rect clientRect = Locate(width_, height_);
// 创建窗口
hWnd_ = ::CreateWindowEx(
NULL,
REGISTER_CLASS,
(LPCTSTR)title_,
WINDOW_STYLE,
int(clientRect.origin.x),
int(clientRect.origin.y),
int(clientRect.size.width),
int(clientRect.size.height),
nullptr,
nullptr,
HINST_THISCOMPONENT,
this
);
if (hWnd_)
{
// 禁用输入法
SetTypewritingEnabled(false);
// 禁用控制台关闭按钮
HWND consoleHWnd = ::GetConsoleWindow();
if (consoleHWnd)
{
HMENU hmenu = ::GetSystemMenu(consoleHWnd, FALSE);
::RemoveMenu(hmenu, SC_CLOSE, MF_BYCOMMAND);
}
}
else
{
::UnregisterClass(REGISTER_CLASS, HINST_THISCOMPONENT);
throw SystemException("Create window failed");
}
}
return hWnd_;
}
void e2d::Window::SetSize(int width, int height)
{
if (width_ == width && height_ == height)
return;
width_ = width;
height_ = height;
if (hWnd_)
{
Rect wRect = Locate(width, height);
::MoveWindow(
hWnd_,
int(wRect.origin.x),
int(wRect.origin.y),
int(wRect.size.width),
int(wRect.size.height),
TRUE
);
}
}
void e2d::Window::SetTitle(const String& title)
{
title_ = title;
if (hWnd_)
{
::SetWindowText(hWnd_, (LPCWSTR)title);
}
}
void e2d::Window::SetIcon(int icon_id)
{
this->icon_id_ = icon_id;
if (hWnd_)
{
HICON hIcon = (HICON)::LoadImage(HINST_THISCOMPONENT, MAKEINTRESOURCE(icon_id), IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_DEFAULTSIZE);
// 设置窗口的图标
::SendMessage(hWnd_, WM_SETICON, ICON_BIG, (LPARAM)hIcon);
::SendMessage(hWnd_, WM_SETICON, ICON_SMALL, (LPARAM)hIcon);
}
}
void e2d::Window::SetCursor(Cursor cursor)
{
LPCWSTR pCursorName = nullptr;
switch (cursor)
{
case Cursor::Normal:
pCursorName = IDC_ARROW;
break;
case Cursor::Hand:
pCursorName = IDC_HAND;
break;
case Cursor::No:
pCursorName = IDC_NO;
break;
case Cursor::Wait:
pCursorName = IDC_WAIT;
break;
case Cursor::ArrowWait:
pCursorName = IDC_APPSTARTING;
break;
default:
break;
}
HCURSOR hCursor = ::LoadCursor(nullptr, pCursorName);
::SetCursor(hCursor);
}
void e2d::Window::SetConsoleEnabled(bool enabled)
{
// 查找已存在的控制台句柄
HWND hwnd = ::GetConsoleWindow();
// 关闭控制台
if (enabled)
{
if (hwnd)
{
::ShowWindow(hwnd, SW_SHOWNORMAL);
}
else
{
// 显示一个新控制台
if (::AllocConsole())
{
hwnd = ::GetConsoleWindow();
// 重定向输入输出
FILE * stdoutStream, * stdinStream, * stderrStream;
freopen_s(&stdoutStream, "conout$", "w+t", stdout);
freopen_s(&stdinStream, "conin$", "r+t", stdin);
freopen_s(&stderrStream, "conout$", "w+t", stderr);
// 禁用控制台关闭按钮
HMENU hmenu = ::GetSystemMenu(hwnd, FALSE);
::RemoveMenu(hmenu, SC_CLOSE, MF_BYCOMMAND);
}
}
}
else
{
if (hwnd)
{
::ShowWindow(hwnd, SW_HIDE);
}
}
}
void e2d::Window::SetTypewritingEnabled(bool enabled)
{
static HIMC hImc = nullptr;
if (enabled)
{
if (hImc != nullptr)
{
::ImmAssociateContext(GetHWnd(), hImc);
hImc = nullptr;
}
}
else
{
if (hImc == nullptr)
{
hImc = ::ImmAssociateContext(GetHWnd(), nullptr);
}
}
}
bool e2d::Window::Popup(const String & text, const String & title, PopupStyle style, bool has_cancel)
{
UINT type = 0;
switch (style)
{
case PopupStyle::Info:
type = MB_ICONINFORMATION;
break;
case PopupStyle::Warning:
type = MB_ICONWARNING;
break;
case PopupStyle::Error:
type = MB_ICONERROR;
break;
default:
break;
}
if (has_cancel)
{
type |= MB_OKCANCEL;
}
Game::GetInstance()->Pause();
int ret = ::MessageBox(hWnd_, (LPCWSTR)text, (LPCWSTR)title, type);
Game::GetInstance()->Resume();
return ret == IDOK;
}
LRESULT e2d::Window::WndProc(HWND hWnd, UINT msg, WPARAM w_param, LPARAM l_param)
{
LRESULT result = 0;
if (msg == WM_CREATE)
{
LPCREATESTRUCT pcs = (LPCREATESTRUCT)l_param;
Window *window = (Window *)pcs->lpCreateParams;
::SetWindowLongPtrW(
hWnd,
GWLP_USERDATA,
PtrToUlong(window)
);
result = 1;
}
else
{
bool hasHandled = false;
Window *window = reinterpret_cast<Window *>(
static_cast<LONG_PTR>(
::GetWindowLongPtrW(hWnd, GWLP_USERDATA)
)
);
switch (msg)
{
// 处理鼠标消息
case WM_LBUTTONUP:
case WM_LBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONUP:
case WM_RBUTTONDOWN:
case WM_RBUTTONDBLCLK:
case WM_MOUSEMOVE:
case WM_MOUSEWHEEL:
{
auto game = Game::GetInstance();
if (game->IsTransitioning())
break;
if (game->GetCurrentScene())
{
game->GetCurrentScene()->Dispatch(MouseEvent(hWnd, msg, w_param, l_param, window->dpi_), false);
}
}
result = 0;
hasHandled = true;
break;
// 处理按键消息
case WM_KEYDOWN:
case WM_KEYUP:
{
auto game = Game::GetInstance();
if (game->IsTransitioning())
break;
if (game->GetCurrentScene())
{
game->GetCurrentScene()->Dispatch(KeyEvent(hWnd, msg, w_param, l_param), false);
}
}
result = 0;
hasHandled = true;
break;
// 处理窗口大小变化消息
case WM_SIZE:
{
UINT width = LOWORD(l_param);
UINT height = HIWORD(l_param);
if (w_param == SIZE_RESTORED)
{
window->width_ = static_cast<int>(width * 96.f / window->dpi_);
window->height_ = static_cast<int>(height * 96.f / window->dpi_);
}
// 如果程序接收到一个 WM_SIZE 消息,这个方法将调整渲染
// 目标适当。它可能会调用失败,但是这里可以忽略有可能的
// 错误,因为这个错误将在下一次调用 EndDraw 时产生
auto render_target = Renderer::GetInstance()->GetRenderTarget();
if (render_target)
{
render_target->Resize(D2D1::SizeU(width, height));
}
}
break;
// 处理窗口标题变化消息
case WM_SETTEXT:
{
window->title_ = (const wchar_t*)l_param;
}
break;
// 处理分辨率变化消息
case WM_DISPLAYCHANGE:
{
// 重绘客户区
::InvalidateRect(hWnd, nullptr, FALSE);
}
result = 0;
hasHandled = true;
break;
// 重绘窗口
case WM_PAINT:
{
Game::GetInstance()->DrawScene();
::ValidateRect(hWnd, nullptr);
}
result = 0;
hasHandled = true;
break;
// 窗口关闭消息
case WM_CLOSE:
{
auto game = Game::GetInstance();
auto currScene = game->GetCurrentScene();
if (!currScene || currScene->OnCloseWindow())
{
game->Quit();
}
}
result = 0;
hasHandled = true;
break;
// 窗口销毁消息
case WM_DESTROY:
{
::PostQuitMessage(0);
}
result = 1;
hasHandled = true;
break;
}
if (!hasHandled)
{
result = ::DefWindowProc(hWnd, msg, w_param, l_param);
}
}
return result;
}