APPLICATION PROGRAMMING INTERFACES FOR GESTURE OPERATIONS

• US 20120023443A1
• Filed: 09/30/2011
• Published: 01/26/2012
• Est. Priority Date: 01/07/2007
• Status: Active Grant

• Current Assignee: Christopher Blumenberg
• Original Assignee: Christopher Blumenberg
• Inventors: Blumenberg, Christopher
• Granted Patent: US 9,575,648 B2
• Time in Patent Office: Days
• US Class Current: 715/800
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
• CPC Class Codes: G06F 3/04845 for image manipulation, e.g. dragging, rotation, expansion or change of colour
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces
• CPC Class Codes: G06T 13/80 2D [Two Dimensional] animation, e.g. using sprites

Abstract

At least certain embodiments of the present disclosure include an environment with user interface software interacting with a software application to provide gesture operations for a display of a device. A method for operating through an application programming interface (API) in this environment includes transferring a scaling transform call. The gesture operations include performing a scaling transform such as a zoom in or zoom out in response to a user input having two or more input points. The gesture operations also include performing a rotation transform to rotate an image or view in response to a user input having two or more input points.

Claims

1. A machine readable non-transitory medium storing executable program instructions which when executed cause a data processing system to perform a method comprising:

receiving a user input that comprises a plurality of input points touching a display of the system;

transferring a gesture start event call in response to the user input;

transferring a gesture changed event call in response to a change in the user input; and

transferring a gesture end call when at least one input point associated with the user input is removed from the display.

2. The medium of claim 1, further comprising:

generating a zoom to scale setting for a window or a view of the display in response to the change in the user input.

3. The medium of claim 1, wherein the change in the user input comprises a rotation to invoke a gesture event that performs a rotation transform on a view associated with the user input.

4. The medium of claim 3, wherein the rotation transform to set a start rotation angle and an end rotation angle.

5. The medium of claim 1, further comprising:

transferring a start gesture call to a delegate associated with an application of the system;

transferring a gesture did change call to the delegate; and

transferring a gesture did finish call to the delegate.

6. A method, comprising:

receiving a user input that comprises one or more input points touching a touch device of a system;

creating a base event in response to the user input;

transferring a gesture changed event call in response to a change in the user input; and

transferring a gesture end call when the user input comprises less than two input points touching the touch device.

7. The method of claim 6, further comprising:

generating a zoom to scale setting for a window or a view of the touch device in response to the change in the user input.

8. The method of claim 6, wherein the user input rotates to invoke a gesture event that performs a rotation transform on a view associated with the user input.

9. The method of claim 8, wherein the rotation transform to set a start rotation angle and an end rotation angle.

10. The method of claim 6, further comprising:

transferring a start gesture call to a delegate associated with an application of the system;

transferring a gesture did change call to the delegate; and

transferring a gesture did finish call to the delegate.

11. A device comprising:

an input panel which is configured to receive user input in the form of two or more input points;

a display device integrated with the input panel;

a central processing unit coupled to the input panel;

a memory coupled to the processor;

one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs including;

instructions for receiving the user input;

instructions for transferring a gesture start event call in response to the user input;

instructions for transferring a gesture changed event call in response to a change in the user input; and

instructions for transferring a gesture end call when at least one input point associated with the user input is removed from the display.

12. The device of claim 11, wherein the programs further comprising:

instructions for generating a zoom to scale setting for a window or a view of the display in response to the change in the user input.

13. The device of claim 11, wherein the change in the user input comprises a rotation to invoke a gesture event that performs a rotation transform on a view associated with the user input.

14. The device of claim 13, wherein the rotation transform to set a start rotation angle and an end rotation angle,

wherein the gesture changed event call further comprises a length of a major and a minor axis of an input point,

wherein the gesture changed event call further comprises a velocity of an input point.

15. The device of claim 11, wherein the programs further comprising:

instructions for transferring a start gesture call to a delegate associated with an application;

instructions for transferring a gesture did change call to the delegate; and

instructions for transferring a gesture did finish call to the delegate.

16. A machine readable non-transitory medium storing executable program instructions which when executed cause a data processing system to perform a method comprising:

receiving a user input that comprises a plurality of input points touching a touch device of the system;

transferring a chord event in response to the user input;

transferring a chord changed event in response to a change in the user input; and

transferring a chord end event.

17. The medium of claim 16, wherein the chord event comprises a number of fingers contacting the touch device.

18. The medium of claim 16, wherein the chord changed event comprises a scaling transform.

19. The medium of claim 16, wherein the chord changed event comprises a rotation transform.

20. The medium of claim 19, wherein the rotation transform to set a start rotation angle and an end rotation angle.