Google Inc.

Igor Kopylov

Steven Joseph Saviano

Luiz Do Amaral De Franca Pereira Filho

Behnoosh Hariri

Kevin Winter

Haluk Burcin Tunali

Etan Bukiet

Gregory George Galante

Olga Sergeyevna Saviano

Jacob Robert Voytko

Alexander Paul Favaro

Norbert Zsolt Kenderesi

Matthew Jay Isison

Mathieu Turcotte

Leeran Raphaely

Michael Owen Thomas

Luiz Amaral Franca Pereira Filho

Michael Frederick

The technology herein involves accessing content of an electronic document and a shared layout for the electronic document, wherein the shared layout provides a layout for user devices having different dimensions of display areas; rendering the content of the electronic document onto a primary rendering surface and a secondary rendering surface, wherein the primary rendering surface is associated with a native platform of a user device and the secondary rendering surface is associated with the shared layout of a server; applying operation commands to modify the primary rendering surface, the operation commands resulting from a user interaction with the electronic document; merging the operation commands into a merged operation call; and invoking the merged operation call to modify the secondary rendering surface, wherein the merged operation call reduces a number of operation calls that modify the secondary rendering surface and is shared with the server to modify the shared layout.

Interactively presenting a visible portion of a rendering surface on a user device

Systems and methods disclosed herein provide a method that includes obtaining, at a user device from a remote storage server, content relating to an electronic document, and rendering the content of the electronic document onto a first virtual rendering surface. The method further includes maintaining a second virtual rendering surface that stores a current state of the first virtual rendering surface. The method further includes obtaining an operation command relating to the electronic document, and retrieving first state information of the first virtual rendering surface and second state information of the second virtual rendering surface. The method further includes applying the operation command to the rendered content of the electronic document on the first virtual rendering surface, and updating at least one of the first state information or the second state information based on a type of the operation command.

Systems and methods disclosed herein provide a method of consistently presenting a visible portion of a rendering surface on multiple user devices. The method includes obtaining, at a user device from a remote storage server, content relating to an electronic document stored on the remote storage server, and then determining layout parameters of the content. The layout parameters define a consistent layout on a virtual rendering surface for the content of the electronic document across multiple user devices having different dimensions of display areas. The method further includes obtaining, via a user interface at the user device, a user indication indicative of a visible portion of the electronic document to be displayed via the user interface. The method further includes determining rendering parameters to render the visible portion at the user interface, and rendering the visible portion via the user interface on the user device.

Systems and methods for interactively presenting a visible portion of a rendering surface on a user device

A method of collaborative document editing is disclosed. The method includes allowing concurrent document editing by a first user of a first client device and a second user of a second client device, receiving a first edit for a document stored at a server from the first client device, receiving a second edit for the document from the second client device, and merging the first edit and the second edit into the document. The method further includes receiving a request of a third user to access the document, determining whether the third user is authorized to access the document using a token associated with the third user, and in response to determining that the third user is authorized to access the document, providing at least a portion of the document with merged first and second edits for presentation to the third user.

Systems and methods for incremental loading of collaboratively generated presentations

Systems and methods for incrementally communicating a document to a client computer are disclosed herein. Time consistent views of the document are maintained throughout the incremental downloading through use of a cryptographically secured permissions token identifying a version of the document the user is permitted to access.

A method for rendering a document on a web browser includes receiving a portion of text within the document to be rendered on a web browser and determining a maximum height of the portion of text. A spacer element is inserted into the portion of text, where the spacer element has a height greater than the maximum height of the portion of text. A vertical position of the portion of text and the spacer element is adjusted by an offset, where a baseline of the portion of text is determined from the height of the spacer element and the offset. The portion of text is rendered on the web browser based at least in part on the baseline.

Mechanism for setting ascent and baseline for HTML elements

Generally, the systems and methods described herein are directed to rendering a document containing textual elements and graphical elements. The systems and methods include separating the graphical elements from the textual elements, and generating a bitmap rendering of the graphical elements and an HTML rendering of the textual elements. The HTML rendering may then be overlaid on the bitmap rendering to generate a composite document having textual elements that are accessible to screen reader software.

Systems and methods for rendering documents

A method for computer-implemented rendering of an animation presentation includes receiving, at a server, a request to view the animation presentation on a computing device, obtaining information identifying a browser application running on the computing device, determining requirements of a presentation technology supported by the browse, decomposing the animation presentation into animation primitives compatible with the presentation technology, and transmitting the animation primitives to the computing device. A computer-implemented method to render an animation presentation include replacing an animation type within an animation page structure of the animation presentation with an animation primitive, flattening the animation, updating the animation page drawing objects to point to the rendered document module object, grouping the animation primitives into sequences to create a timeline for the animation page, and adjusting delays of the animations so as to begin at a correct point in time. A system for implementing the rendering of animations is described.

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Brooklyn, NY, United States of America

Igor Kopylov