// Returns whether or not the image is fully opaque.
private static bool opaque(image.Image m)
{
{
opaquer (o, ok) = opaquer.As(m._<opaquer>())!;
if (ok)
{
return o.Opaque();
}
}
var b = m.Bounds();
for (var y = b.Min.Y; y < b.Max.Y; y++)
{
for (var x = b.Min.X; x < b.Max.X; x++)
{
var (_, _, _, a) = m.At(x, y).RGBA();
if (a != 0xffffUL)
{
return false;
}
}
}
return true;
}
public decoder(io.Reader r = default, image.Image img = default, hash.Hash32 crc = default, long width = default, long height = default, long depth = default, color.Palette palette = default, long cb = default, long stage = default, uint idatLength = default, array <byte> tmp = default, long interlace = default, bool useTransparent = default, array <byte> transparent = default)
{
this.r = r;
this.img = img;
this.crc = crc;
this.width = width;
this.height = height;
this.depth = depth;
this.palette = palette;
this.cb = cb;
this.stage = stage;
this.idatLength = idatLength;
this.tmp = tmp;
this.interlace = interlace;
this.useTransparent = useTransparent;
this.transparent = transparent;
}
// clip clips r against each image's bounds (after translating into the
// destination image's coordinate space) and shifts the points sp and mp by
// the same amount as the change in r.Min.
private static void clip(Image dst, ptr<image.Rectangle> _addr_r, image.Image src, ptr<image.Point> _addr_sp, image.Image mask, ptr<image.Point> _addr_mp)
{
ref image.Rectangle r = ref _addr_r.val;
private static void Draw(this floydSteinberg _p0, Image dst, image.Rectangle r, image.Image src, image.Point sp)
{
clip(dst, _addr_r, src, _addr_sp, null, _addr_null);
if (r.Empty())
{
return ;
}
drawPaletted(dst, r, src, sp, true);
}
// Draw implements the Drawer interface by calling the Draw function with this
// Op.
public static void Draw(this Op op, Image dst, image.Rectangle r, image.Image src, image.Point sp)
{
DrawMask(dst, r, src, sp, null, new image.Point(), op);
}
public encoder(ref ptr <Encoder> enc = default, io.Writer w = default, image.Image m = default, long cb = default, error err = default, array <byte> header = default, array <byte> footer = default, array <byte> tmp = default, array <slice <byte> > cr = default, slice <byte> pr = default, ref ptr <zlib.Writer> zw = default, long zwLevel = default, ref ptr <bufio.Writer> bw = default)
{
this.enc = enc;
this.w = w;
this.m = m;
this.cb = cb;
this.err = err;
this.header = header;
this.footer = footer;
this.tmp = tmp;
this.cr = cr;
this.pr = pr;
this.zw = zw;
this.zwLevel = zwLevel;
this.bw = bw;
}