Abstract: Methods and systems for rendering code points on a presentation device with layout processing performed outside the presentation device. In one aspect, a layout processor translates one or more code points into a sequence of one or more glyph indices and corresponding positioning information. The glyph indices and corresponding positioning information may be included within a PTOCA control sequence. The glyph indices may be used by the presentation device to directly locate a corresponding glyph image in a font. The positioning information defines positioning of each glyph image so identified. Features and aspects hereof allow efficient layout of complex text in which glyph images and positioning may be dynamically determined in accordance with context or other attributes. The processing burden of such layout processing is removed from the presentation device without significantly increasing data transmission bandwidth between the presentation engine and external system utilizing the layout processor.

Abstract: Systems and methods of identifying and processing complex text are provided. If a presentation data stream contains a complex text string, a preselected control in the presentation data stream is inserted before the complex text string. A first parameter has a value indicating a control type for controlling processing of complex text, and a second parameter takes one or more values for enabling and disabling the processing of complex text. In processing complex text, responsive to a first predetermined type of control in a presentation data stream, if the first type of complex text processing is enabled, this processing is applied to a complex text string succeeding the first predetermined type of control in the presentation data stream. The first predetermined type of control includes a first parameter represented by a corresponding value for controlling the first type of complex text processing.

Abstract: A method, computer program product and system for managing font resources using system independent references. A resource library may store a table, referred to herein as the “resource access table” that contains an entry for each base font resource. Each entry may include the following information on a base font resource: a native name, a file name, a unique identification, attributes, and possibly a link list used to identify any font resources that are linked to the base font resource. Since changes to the resource file such as updating a version of a font resource, changing the attributes of the font resource or changing the font resource's linked fonts, simply require an update to the resource access table, the data stream and the application program generating that data stream does not have to be changed.

Abstract: A method, computer program product and system for switching fonts without embedding font switching commands in the data stream (logical description of the print document) between a client and a print server. The client in a printing system may receive a character where the character is a modified character in a base font resource or is a character to be added to or deleted from the base font resource. The client may create a font resource that includes the received character. The client may further link the created font resource with the base font resource or vice-versa thereby allowing a user to use both the characters in the base font resource and in the linked font resource as if they were a single font resource without building or buying a special purpose font resource. Consequently, font switching commands are no longer necessary to be embedded in the data stream.