Declarative Style Rules for Default Touch Behaviors

• US 20140019844A1
• Filed: 07/13/2012
• Published: 01/16/2014
• Est. Priority Date: 07/13/2012
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Rakow, Matthew A., Schreiner, Tony E., Litterell, Bradley J., Babbitt, Kevin M., Muralidhar Rao, Praveen Kumar, Rogers, Justin E., Galineau, Sylvain P., Eicholz, Arron J.
• Granted Patent: US 9,021,437 B2
• Time in Patent Office: Days
• US Class Current: 715/234
• CPC Class Codes: G06F 11/3668 Software testing software testing in telephone exchanges H04M3/242, testing of hardware G06F11/22
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0484 for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 40/12 Use of codes for handling textual entities
• CPC Class Codes: G06F 40/154 Tree transformation for tree-structured or markup documents, e.g. XSLT, XSL-FO or stylesheets

Abstract

In at least some embodiments, a mechanism is provided for web developers to request specific default behaviors, such as touch behaviors, on their webpages. In at least some implementations, a Cascading Style Sheets (CSS) rule is utilized to enable or disable manipulations such as panning, pinch zoom, and double-tap-zoom manipulations. The mechanism can be extensible to accommodate additional default behaviors that are added in the future. In various embodiments, the behaviors are declared upfront and thus differ from solutions which employ an imperative model. The declarative nature of this approach allows achievement of full independence from the main thread and deciding the correct response using independent hit testing.

Claims

1. A computer-implemented method comprising:

building a webpage; and

assigning one or more properties to elements of the webpage to request one or more respective default touch behaviors, the assigning comprising using one or more declarative styles.

2. The method of claim 1, wherein the default touch behaviors comprise enabling or disabling a panning manipulation.

3. The method of claim 1, wherein the default touch behaviors comprise enabling or disabling a pinch zoom manipulation.

4. The method of claim 1, wherein the default touch behaviors comprise enabling or disabling a double-tap-zoom manipulation.

5. The method of claim 1, wherein one of the properties has a value that defers a touch-action decision to a parent of an element.

6. The method of claim 1, wherein one of the properties has a value that disables a manipulation.

7. The method of claim 1, wherein one of the properties has a value that causes an associated element to be treated as a manipulation-causing element.

8. The method of claim 1, wherein one of the properties has a value that specifies that an associated element is to be treated as a manipulation-blocking element.

9. One or more computer-readable storage media embodying computer readable instructions, which, when executed, implement a method comprising:

building a display tree associated with a webpage;

setting at least one flag on a display tree node corresponding to an element for which a default touch behavior has been specified using a declarative style;

conducting an independent hit test on the display tree; and

calling a manipulation thread for direct manipulation for one or more elements for which a default touch behavior has been specified.

10. The one or more computer-readable storage media of claim 9, wherein the default touch behavior comprises enabling or disabling a panning manipulation.

11. The one or more computer-readable storage media of claim 9, wherein the default touch behavior comprises enabling or disabling a pinch zoom manipulation.

12. The one or more computer-readable storage media of claim 9, wherein the default touch behavior comprises enabling or disabling a double-tap-zoom manipulation.

13. The one or more computer-readable storage media of claim 9, wherein the declarative style is associated with a property having a value that defers a touch-action decision to a parent of an element.

14. The one or more computer-readable storage media of claim 9, wherein the declarative style is associated with a property having a value that disables a manipulation.

15. The one or more computer-readable storage media of claim 9, wherein the declarative style is associated with a property having a value that causes an associated element to be treated as a manipulation-causing element.

16. The one or more computer-readable storage media of claim 9, wherein the declarative style is associated with a property having a value that causes an associated element to be treated as a manipulation-blocking element.

17. A system comprising:

one or more computer readable storage media embodying computer readable instructions which, when executed, implement a method comprising;

receiving a webpage;

building a display tree associated with the webpage;

setting at least one flag on a display tree node corresponding to an element for which a default touch behavior has been specified using a declarative style;

conducting an independent hit test on the display tree; and

calling a manipulation thread for direct manipulation for one or more elements for which a default touch behavior has been specified.

18. The system of claim 17, wherein the default touch behavior comprises enabling or disabling a panning manipulation.

19. The system of claim 17, wherein the default touch behavior comprises enabling or disabling a pinch zoom manipulation.

20. The system of claim 17, wherein the default touch behavior comprises enabling or disabling a double-tap-zoom manipulation.