bool CGraphics::InitWindow(const int &iWidth, const int &iHeight, const bool &bWindowed)
{
// Inicializamos las variables miembro de la clase
m_bIsWindowed = bWindowed;
m_iWidth = iWidth;
m_iHeight = iHeight;
DWORD dwWindowStyle;
// Damos el estilo de la ventana dependiendo si es
// en modo ventana o pantalla completa
if (m_bIsWindowed)
dwWindowStyle = WS_OVERLAPPEDWINDOW | WS_VISIBLE;
else
dwWindowStyle = WS_POPUP | WS_VISIBLE;
WNDCLASSEX wc;
ZeroMemory(&wc, sizeof(WNDCLASSEX));
// Configuramos las propiedades de la ventana
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.cbSize = sizeof(WNDCLASSEX);
wc.hbrBackground = (HBRUSH)NULL;
wc.hCursor = LoadCursor(g_hInstance, IDC_ARROW);
wc.hInstance = g_hInstance;
wc.lpfnWndProc = WindowProc;
wc.lpszClassName = L"LMADGameEngine";
wc.lpszMenuName = NULL;
wc.style = CS_OWNDC;
// Registramos la ventana para que el sistema operativo
// tenga conocimiento de ella
RegisterClassEx(&wc);
// Creamos la ventana en memoria
m_hWnd = CreateWindowEx(
NULL,
L"LMADGameEngine",
g_wStrWindowTitle,
dwWindowStyle,
CW_USEDEFAULT,
CW_USEDEFAULT,
m_iWidth,
m_iHeight,
NULL,
NULL,
g_hInstance,
NULL);
// Inicializamos Direct3D
if (!InitGraphicsMode())
return false;
// Voila!
ShowWindow(m_hWnd, g_nCmdShow);
return true;
}
GlobalGraphicsHack() : bmp(1, 1, PixelFormat32bppARGB), gfx(&bmp) { InitGraphicsMode(&gfx); }
// Should be called from WM_PAINT. Recursively paints a given window and
// all its children. Control must be the top-level window associated
// with HWND.
// Note: maybe should be split into BeginPaint()/Paint()/EndPaint()
// calls so that the caller can do more drawing after Paint()
void Painter::Paint(HWND hwnd, bool isDirty)
{
CrashAlwaysIf(hwnd != wnd->hwndParent);
PAINTSTRUCT ps;
HDC dc = BeginPaint(hwnd, &ps);
Region clip;
// TODO: be intelligent about only repainting changed
// parts for perf. Note: if cacheBmp changes, we need
// to repaint everything
Graphics gDC(dc);
gDC.GetClip(&clip);
ClientRect r(hwnd);
// TODO: fix showing black parts when resizing a window.
// my theory is that we see black background on right/bottom
// of the window when we resize the window because the os paints
// it black and we take too long to perform the whole paint so the
// black part persists long enough for human eye to notice.
// To fix that we could try to paint the black part immediately
// to gDC using the same color as the background. This is problematic
// for two reasons:
// - I don't know which part exactly needs to be repainted
// - it can be tricky if background is a gradient
// I thought I could just do PaintBackground(&gDC, Rect(0, 0, r.dx, r.dy))
// but that generates flickr which leads me to believe that either
// Graphics::FillRectangle() ignores clip region or clip region is not set
// properly. Current solution detects a resize, paints a background and the
// last version of page, which somewhat eliminates the problem but also
// sometimes causes flickr
// See http://www.catch22.net/tuts/flicker for info on win repainting
if (cacheBmp && !sizeDuringLastPaint.Equals(Size(r.dx, r.dy))) {
PaintBackground(&gDC, Rect(0, 0, r.dx, r.dy));
gDC.DrawImage(cacheBmp, 0, 0);
sizeDuringLastPaint = Size(r.dx, r.dy);
}
if (BitmapNotBigEnough(cacheBmp, r.dx, r.dy)) {
::delete cacheBmp;
cacheBmp = ::new Bitmap(r.dx, r.dy, &gDC);
isDirty = true;
}
//TODO: log clipBounds for debugging
//Rect clipBounds;
//clip.GetBounds(&cliBounds)
// draw to a bitmap cache unless we were asked to skip
// this step and just blit cached bitmap because the caller
// knows it didn't change
if (isDirty) {
Graphics g((Image*)cacheBmp);
InitGraphicsMode(&g);
g.SetClip(&clip, CombineModeReplace);
PaintBackground(&g, Rect(0, 0, r.dx, r.dy));
PaintWindowsInZOrder(&g, wnd);
}
// TODO: try to manually draw only the part that falls within
// clipBounds or is it done automatically by DrawImage() ?
gDC.DrawImage(cacheBmp, 0, 0);
EndPaint(hwnd, &ps);
}