Microsoft Technology Licensing, LLC

Other

Eliyezer Kohen

Andrei Burago

Victor E Kozyrev

Sergey Genkin

Anton Sukhanov

Dean Dayton Ballard

Igor Zverev

Christoph E Ammann

George M Moore

Dennis Richard Adler

Dov Harel

Martin P Tompa

Lenox H Brassell

Peter D Pathe

A computer-implemented method and computer-readable medium are provided for providing page and table layout services. According to the method, a layout manager program provides layout services to client application programs. The layout manager receives requests from client application programs to format document content. In response to such requests, the layout manager performs one or more callback operations to the client application to retrieve portions of the document to be laid out. Once the portions of the page to be laid out have been retrieved through the callback operations, the layout manager lays out the portions of the document and notifies the client application that the layout is completed. The client application can then query the layout manager for the formatting result.

Method and computer-readable medium for providing page and table formatting services

An approach for positioning a floating object in a workspace of an electronic document is disclosed herein. To accomplish this, the workspace is divided into a plurality of available portions in which floating objects may be positioned. For example, these available portions represent geometrical areas within the workspace that do not include obstacles, such as absolutely positioned objects and other floating objects. The available portions are then evaluated against a plurality of undesirable positioning characteristics in order to determine an optimal position for the floating object within the workspace. The optimal position is then determined to be either a location in the workspace that does not result in any of the undesirable characteristics or, alternatively, a location having the most tolerable of the potentially resultant undesired characteristics.

Positioning of floating objects in electronic documents

A method and computer-readable medium are provided for optimized paragraph layout. According to the method, a line-by-line paragraph layout is generated determine a maximum penalty for a paragraph. One or more layout nodes may be generated that include data representing a possible layout of the paragraph to a point within a backing store and identifying any changes to a geometry of the page caused by the layout of the paragraph defined by the layout node. A penalty is also calculated for each of the layout nodes. Each layout node that has a penalty less than the maximum penalty calculated during the line-by-line formatting processing is added to the node pool. This process repeats until only a single layout node remains in the node pool that represents the entire paragraph of text.

Method and computer readable medium for optimized paragraph layout

A method and computer-readable medium are provided for laying out footnotes. Each footnote includes a footnote reference and corresponding footnote text. According to the method, an attempt is first made to lay out one or more footnotes such that each of the references and the corresponding text all fit completely within one page. If such a layout cannot be made, an attempt is may to lay out each of the footnotes such that all of the reference marks fit on the page and all but one of the corresponding note text fits completely on the page. If such a layout cannot be made, an emergency layout may be generated.

Method and computer readable medium for laying out footnotes

A computer-implemented method and computer-readable medium are provided for generating a multiple column layout. According to the method, a layout is defined that includes two or more columns and one or more spans that extend across two or more of the columns. Each span is defined as being either content defined or height defined. Content is laid out from a document in each span that is height defined until a defined height is reached. Content is laid out from the document in each span that is content defined until a specified point in the content is reached. When all content or height defined spans have been laid out, the remaining portion of the content is laid out across all of the columns.

Method and computer-readable medium for generating a multiple column layout

A method and system for providing a substitute font that visually approximates a selected font that is unavailable in a computer system is provided. In a preferred embodiment of the present invention, the method and system first selects as the substitute font a font that is available in the computer system. The method and system then adjusts the overall widths of the characters of the substitute font to match the overall widths of the corresponding characters of the selected font. This causes the same combinations of characters of the substitute font and of the selected font to have substantially the same size and appearance. The method and system then makes the substitute font available to a program that has requested the selected font.

Method and system for providing substitute computer fonts

An improved scan converter to support the efficient and accurate display of character outlines by pixel-oriented display devices. To conserve the finite resource of memory, the improved scan converter supports an efficient use of available memory workspace by accurately determining an upper bound for the amount of memory required to support scan conversion calculations. To achieve improvements in speed and character image quality, the improved scan converter renders the spline segments of a character outline by using a second order equation to calculate an implicit function based on the control points of each segment. The improved scan converter further addresses in a systematic manner the rendering of an endpoint located on a scan line to determine whether the pixel associated with the endpoint should be activated. This decision is based upon the direction of approach to and exit from this endpoint for the pair of segments connected to the endpoint. The improved scan converter also reduces the number of calculations requiring sub-pixel precision to support the selection of a pixel located nearest the contour, thereby providing an improved solution for dropout condition.

Method for rendering endpoints of segments during scan conversion of a glyph

Method for estimating the memory required for scan conversation of a glyph

Method of dropout control for scan conversion of a glyph comprising a

Method for rendering a spline for scan conversion of a glyph comprising

Method for rendering a spline for scan conversion of a glyph

A method of controlling the intercharacter spacing between adjacent characters in automatic typography systems. The method ensures that the autohinter creates even spacing between two adjacent characters as the resolution and font size varies. The left and right sidebearings of each character are hinted to one of a plurality of numbers of pixels to produce a hinted left sidebearing and a hinted right sidebearing. Next, a predetermined number of pixels are subtracted from one of the hinted sidebearings and added to the other of the hinted sidebearings. At font sizes less than a predetermined threshold, the plurality of numbers of pixels are such that the left and right sidebearings are hinted to a nearest integer plus one-half pixel, and at all font sizes greater than the predetermined threshold, the left and right sidebearings are hinted to a nearest integer.

Methods and system for controlling intercharacter spacing as font size

A method of displaying characters on a pixel oriented grayscale display device having a predetermined pixel resolution employing parametric, geometric glyph descriptors is disclosed. The process supports a client process that passes a request for a particular font and a physical character height for the displayed characters as well as the physical resolution expressed in pixels for unit length. A character space height value in pixels is determined and compared to selected values to determine whether the character space height in physical pixels falls into one of three distinct ranges. If within the smallest range, no hinting or grid fitting is performed and the physical pixel coordinates of a scaled glyph descriptor are scan converted using subpixel coordinates. The on subpixels within each pixel are counted to provide a grayscale value for illuminating that particular pixel. If the character space height is in the highest range, the same process is performed after the scaled glyph descriptor is hinted to physical pixel boundaries. Character space heights in the mid range are hinted to the physical pixel boundary but scan converted using a conventional scan converter for the physical pixel space. The on pixels that result from this scan conversion are then illuminated to the maximum grayscale value while off pixels from the conversion are left off. The values of the variables that define the ranges are user selectable and may be varied in response to other parameters.

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Mercer Island, WA, United States of America

Eliyezer Kohen