copyFrom abstract method

void copyFrom(
  1. Buffer<T> from, {
  2. Rect? source,
  3. Pos? target,
})

Copies the pixel data from a source buffer to this buffer.

If a source rectangle is provided, only the pixels within that rectangle are copied, and the rectangle will be clipped to the bounds of the source buffer. If omitted, the entire source buffer will be copied.

If a target position is provded, the top-left corner of the source rectangle will be copied starting at that position. If omitted, the top-left corner of the source rectangle will be copied to the top-left corner of the this buffer. If there is not sufficient space in the target buffer, the source rectangle will be clipped to fit this.

The pixels are copied as-is, without any conversion or blending; see blit for converting and blending pixel data.

Example

final src = IntPixels(2, 2, data: Uint32List.fromList([
  0xFFFFFFFF, 0x00000000, //
  0x00000000, 0xFFFFFFFF, //
]));

final dst = IntPixels(3, 3);
dst.copyFrom(src);
dst.copyFrom(src, source: Rect.fromLTWH(1, 0, 1, 2));
dst.copyFrom(src, target: Pos(1, 1));
dst.copyFrom(src, source: Rect.fromLTWH(1, 0, 1, 2), target: Pos(1, 1));

Implementation

void copyFrom(
  Buffer<T> from, {
  Rect? source,
  Pos? target,
});