winmain.cpp

#include "stdafx.h"
#include "app.h"

bool gDestroy = false;
bool gActive = true;
HWND gWndHandle;

LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
	case WM_DESTROY:
		gDestroy = true;
		break;

	case WM_ACTIVATE:
		gActive = wParam != WA_INACTIVE;
		break;

	case WM_KEYDOWN:
		gApp.OnKeyDown(wParam);
		break;

	case WM_LBUTTONDOWN:
		gApp.OnLButtonDown(LOWORD(lParam), HIWORD(lParam));
		break;

	case WM_LBUTTONUP:
		gApp.OnLButtonUp(LOWORD(lParam), HIWORD(lParam));
		break;

	case WM_MOUSEMOVE:
		gApp.OnMouseMove(LOWORD(lParam), HIWORD(lParam));
		break;

	case WM_MOUSEWHEEL:
		gApp.OnMouseWheel(GET_WHEEL_DELTA_WPARAM(wParam));
		break;

	case WM_SIZE:
		gApp.OnResize();
		break;
	}

	return DefWindowProc(hWnd, msg, wParam, lParam);
}

void MainLoop(HINSTANCE hInst)
{
	MSG Msg;
	while (!gDestroy)
	{
		if (PeekMessage(&Msg, NULL, 0, 0, PM_NOREMOVE))
		{
			if (!GetMessage(&Msg, NULL, 0, 0))
				return;

			TranslateMessage(&Msg);
			DispatchMessage(&Msg);
		}
		else
		{
			if (gActive)
			{
				gApp.Render();
				Sleep(1);
			}
		}
	}
}

INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR lpCmdLine, INT)
{
	wchar_t const* appName = L"rt_bc6h_encoder_gpu";
	WNDCLASSEX wc = { sizeof(WNDCLASSEX), 0, MsgProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, appName, NULL };

	RegisterClassEx(&wc);

	DWORD const dwStyle = WS_SYSMENU | WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_SIZEBOX;
	RECT rcWindowSize;
	SetRect(&rcWindowSize, 0, 0, 1280, 720);
	AdjustWindowRect(&rcWindowSize, dwStyle, FALSE);

	RECT rcDesktop;
	GetClientRect(GetDesktopWindow(), &rcDesktop);

	if (rcWindowSize.bottom < rcDesktop.bottom)
	{
		rcWindowSize.bottom -= rcWindowSize.top;
		rcWindowSize.top = 0;
	}

	if (rcWindowSize.right < rcDesktop.right)
	{
		int iTranslate = (rcDesktop.right - (rcWindowSize.right - rcWindowSize.left)) / 2;
		rcWindowSize.left += iTranslate;
		rcWindowSize.right += iTranslate;
	}

	gWndHandle = CreateWindow(appName, appName, dwStyle, rcWindowSize.left, rcWindowSize.top,
		rcWindowSize.right - rcWindowSize.left, rcWindowSize.bottom - rcWindowSize.top,
		GetDesktopWindow(), nullptr, wc.hInstance, nullptr);

	gApp.Init(gWndHandle);
	ShowWindow(gWndHandle, SW_SHOWDEFAULT);
	UpdateWindow(gWndHandle);

	MainLoop(hInst);

	UnregisterClass(appName, wc.hInstance);
	gApp.Release();
	return 0;
}