RGBA32BitmapHeader constructor
RGBA32BitmapHeader(
- int contentSize,
- int width,
- int height
)
Implementation
RGBA32BitmapHeader(this.contentSize, int width, int height) {
headerIntList = Uint8List(fileLength);
final ByteData bd = headerIntList.buffer.asByteData();
bd.setUint8(0x0, 0x42);
bd.setUint8(0x1, 0x4d);
bd.setInt32(0x2, fileLength, Endian.little);
bd.setInt32(0xa, RGBA32HeaderSize, Endian.little);
bd.setUint32(0xe, 108, Endian.little);
bd.setUint32(0x12, width, Endian.little);
bd.setUint32(0x16, -height, Endian.little);
bd.setUint16(0x1a, 1, Endian.little);
bd.setUint32(0x1c, 32, Endian.little); // pixel size
bd.setUint32(0x1e, 3, Endian.little); //BI_BITFIELDS
bd.setUint32(0x22, contentSize, Endian.little);
bd.setUint32(0x36, 0x000000ff, Endian.little);
bd.setUint32(0x3a, 0x0000ff00, Endian.little);
bd.setUint32(0x3e, 0x00ff0000, Endian.little);
bd.setUint32(0x42, 0xff000000, Endian.little);
}