InputRaster

Wolfram Kernel

Execution environment

Notebook`Kernel`Inputs`

Context

provides a free-drawing 2D input

InputRaster[opts___] _EventObject

provides a free-drawing over an image

InputRaster[img_Image, opts___] _EventObject

Event generation

Fires a single event on any changes on canvas with Image as a payload. For example

bufferImage = ImageData[ConstantImage[{0,0,0,0}, {350,350}], "Byte"];

EventHandler[InputRaster[ImageSize->{350,350}], Function[img,
  bufferImage = ImageData[img, "Byte"];
]]

Image[bufferImage // Offload, "Byte"]

Chaining events

One can reuse another event

InputRaster[event_EventObject, rest__]

Options

ImageSize

If no image or overlay image is provided, one can specify a size for blank canvas. By the default is 300

"OverlayImage"

Places a semitransparent image over the canvas. It comes handy when working with masks for images

"Topic"

Specifies which topic (or pattern) of an event is used. By the default is "Default"