Display Technique for Mixed-Object Editing
Original Publication Date: 1988-Jul-01
Included in the Prior Art Database: 2005-Feb-15
Scrolling with a display screen over a document containing mixed objects, such as text, spreadsheet cells and non-character images, can be accomplished with conserved storage by first establishing compact representations of each object and then composing these representations in a structured form that yields the document image. Each compact representation has generic routines defined on it for use by a document formatting algorithm. As examples, text may be represented by a matrix of character, attribute and font triples while a spreadsheet may be a linked list of spreadsheet cells and a non- character image bitmap. Generic routines are then used to generate coordi- nates for the document formatting function.