message DragImage

What hangs off the cursor during a drag out of a Lava window, as the client drew it. See StartDrag.

A draw list rather than a picture, for the reason every frame is one: the client has no GPU to rasterise with, and a chip's commands are a few kilobytes where its pixels would be hundreds. The client lays its views out at their natural size and emits them with the chip's top-left at 0,0; width × height is what that came to.

The arrays are canvas's DrawCommand (32 bytes), GlyphInstance (16), MeshVertex (8) and GradientDesc (16), raw — both ends compile against draw_command.hpp, and the compositor refuses any array that is not a whole number of them. Font and image ids in them are the device-wide ids the client already registered, so a chip can carry text and pictures.

offsetX/offsetY place its top-left relative to the pointer.