struct DragChipImage
Swift
struct DragChipImageA drag chip: views laid out and emitted into a draw list of their own.
The arrays are canvas's own DrawCommand, GlyphInstance, MeshVertex
and GradientDesc structs, as bytes. Whoever draws it compiles against
the same draw_command.hpp, so this is the frame format rather than a new
one — and a chip is a few kilobytes, sent once when the drag starts.
Chip-local: the list is emitted with the chip's top-left at 0,0, and
width × height is what it laid out to, in pixels.
Sources/LavaUI/DragSource.swift:20
Properties
var byteCount: Int { get }Total size of the four arrays, compared against maxWireBytes.
Sources/LavaUI/DragSource.swift:40
var commands: [UInt8]The chip's draw commands (canvas DrawCommands), as bytes.
Sources/LavaUI/DragSource.swift:26
var glyphs: [UInt8]The glyph instances the commands refer to (canvas GlyphInstances), as bytes.
Sources/LavaUI/DragSource.swift:28
var gradients: [UInt8]Gradient descriptions the commands refer to (canvas GradientDescs), as bytes.
Sources/LavaUI/DragSource.swift:32
var height: UInt32Height the chip laid out to, in pixels.
Sources/LavaUI/DragSource.swift:24
static let maxWireBytes: IntPast this a chip is not sent, and the drag goes ahead with the cursor alone. Well under the control plane's per-message ceiling; a chip that big is a window, not a chip.
Sources/LavaUI/DragSource.swift:37
var meshVertices: [UInt8]Mesh vertices the commands refer to (canvas MeshVertexes), as bytes.
Sources/LavaUI/DragSource.swift:30
var width: UInt32Width the chip laid out to, in pixels.
Sources/LavaUI/DragSource.swift:22