$con = new CairoContext($sur);
$con->setSourceRgb(0, 0, 1);
$con->paint();
$s = new CairoImageSurface(CairoFormat::A1, 6400, 20);
$stride = $s->getStride();
$height = $s->getHeight();
$width = $s->getWidth();
$data = "";
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < ($width + 7) / 8; $x++) {
$data = $data . chr(5);
}
}
$s->createForData($data, CairoFormat::A1, $width, $height, $stride);
$con->setSourceRgb(1, 0, 0);
$con->maskSurface($s);
$con->fill();
$s = new CairoImageSurface(CairoFormat::A1, 20, 6400);
$stride = $s->getStride();
$height = $s->getHeight();
$width = $s->getWidth();
$data = "";
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < ($width + 7) / 8; $x++) {
$data = $data . chr(80);
}
}
$s->createForData($data, CairoFormat::A1, $width, $height, $stride);
$con->setSourceRgb(0, 1, 0);
$con->maskSurface($s, 0, 0);
$sur->writeToPng(dirname(__FILE__) . "/large-source-php.png");
