protected void RestoreBackground(Rect rect, byte backColor = 0)
{
VirtScreen vs;
if (rect.Top < 0)
rect.Top = 0;
if (rect.Left >= rect.Right || rect.Top >= rect.Bottom)
return;
if ((vs = FindVirtScreen(rect.Top)) == null)
return;
if (rect.Left > vs.Width)
return;
// Convert 'rect' to local (virtual screen) coordinates
rect.Top -= vs.TopLine;
rect.Bottom -= vs.TopLine;
rect.Clip(vs.Width, vs.Height);
int height = rect.Height;
int width = rect.Width;
if (_game.Platform == Platform.FMTowns && Game.GameId == GameId.Monkey1 && vs == VerbVirtScreen && rect.Bottom <= 154)
rect.Right = 319;
MarkRectAsDirty(vs, rect.Left, rect.Right, rect.Top, rect.Bottom, Gdi.UsageBitRestored);
var screenBuf = new PixelNavigator(vs.Surfaces[0]);
screenBuf.GoTo(vs.XStart + rect.Left, rect.Top);
if (height == 0)
return;
if (vs.HasTwoBuffers && _currentRoom != 0 && IsLightOn())
{
var back = new PixelNavigator(vs.Surfaces[1]);
back.GoTo(vs.XStart + rect.Left, rect.Top);
Gdi.Blit(screenBuf, back, width, height);
if (vs == MainVirtScreen && _charset.HasMask)
{
if (_game.Platform == Platform.FMTowns)
{
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left * _textSurfaceMultiplier, (rect.Top + vs.TopLine) * _textSurfaceMultiplier);
Gdi.Fill(mask, 0, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
else
{
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left, rect.Top - ScreenTop);
Gdi.Fill(mask, CharsetMaskTransparency, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
}
}
else
{
if (Game.Platform == Platform.FMTowns)
{
backColor |= (byte)(backColor << 4);
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left * _textSurfaceMultiplier, (rect.Top + vs.TopLine) * _textSurfaceMultiplier);
Gdi.Fill(mask, backColor, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
if (Game.Features.HasFlag(GameFeatures.Is16BitColor))
Gdi.Fill(screenBuf, _16BitPalette[backColor], width, height);
else
Gdi.Fill(screenBuf, backColor, width, height);
}
}
public static void Fill(Surface surface, Rect r, int color)
{
r = new Rect(r.Left, r.Top, r.Right, r.Bottom);
r.Clip(surface.Width, surface.Height);
if (!r.IsValid)
return;
int width = r.Width;
int lineLen = width;
int height = r.Height;
bool useMemset = true;
var bpp = Surface.GetBytesPerPixel(surface.PixelFormat);
if (bpp == 2)
{
lineLen *= 2;
if ((ushort)color != ((color & 0xff) | (color & 0xff) << 8))
useMemset = false;
}
else if (bpp == 4)
{
useMemset = false;
}
else if (bpp != 1)
{
throw new InvalidOperationException("Surface::fillRect: bytesPerPixel must be 1, 2, or 4");
}
if (useMemset)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((byte)color, lineLen);
pn.OffsetY(1);
}
}
else
{
if (bpp == 2)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((ushort)color, lineLen);
pn.OffsetX(surface.Width);
}
}
else
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((uint)color, lineLen);
pn.OffsetX(surface.Width / 2);
}
}
}
}
