void Design::drawBitmap(Graphics::ManagedSurface *surface, Common::SeekableReadStream &in) {
int numBytes = in.readSint16BE();
int y1 = in.readSint16BE();
int x1 = in.readSint16BE();
int y2 = in.readSint16BE();
int x2 = in.readSint16BE();
int w = x2 - x1;
int h = y2 - y1;
Graphics::ManagedSurface tmp;
tmp.create(w, h, Graphics::PixelFormat::createFormatCLUT8());
numBytes -= 10;
int x = 0, y = 0;
while (numBytes > 0 && y < h) {
int n = in.readSByte();
int count;
int b = 0;
int state = 0;
numBytes--;
if ((n >= 0) && (n <= 127)) { // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally.
count = n + 1;
state = 1;
} else if ((n >= -127) && (n <= -1)) { // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times.
b = in.readByte();
numBytes--;
count = -n + 1;
state = 2;
} else { // Else if n is -128, noop.
count = 0;
}
for (int i = 0; i < count && y < h; i++) {
byte color = 0;
if (state == 1) {
color = in.readByte();
numBytes--;
} else if (state == 2)
color = b;
for (int c = 0; c < 8; c++) {
if (_boundsCalculationMode) {
adjustBounds(x1 + x, y1 + y);
} else if (x1 + x >= 0 && x1 + x < surface->w && y1 + y >= 0 && y1 + y < surface->h)
*((byte *)tmp.getBasePtr(x, y)) = (color & (1 << (7 - c % 8))) ? kColorBlack : kColorWhite;
x++;
if (x == w) {
y++;
x = 0;
break;
}
}
}
}
in.skip(numBytes);
if (_boundsCalculationMode)
return;
FloodFill ff(&tmp, kColorWhite, kColorGreen);
for (int yy = 0; yy < h; yy++) {
ff.addSeed(0, yy);
ff.addSeed(w - 1, yy);
}
for (int xx = 0; xx < w; xx++) {
ff.addSeed(xx, 0);
ff.addSeed(xx, h - 1);
}
ff.fill();
for (y = 0; y < h && y1 + y < surface->h; y++) {
byte *src = (byte *)tmp.getBasePtr(0, y);
byte *dst = (byte *)surface->getBasePtr(x1, y1 + y);
for (x = 0; x < w; x++) {
if (*src != kColorGreen)
*dst = *src;
src++;
dst++;
}
}
tmp.free();
}
