Touch Screen Control for Adjusting a Numerical Value

摘要

A method of operating a data processing system having a touch enabled display screen to alter the value of a specified variable in the data processing system is disclosed. A value control is provided on the display screen to alter the variable. The value control has an increment tap region, a decrement tap region, and a drag region. The data processing system recognizes gestures in these regions and changes the variable in response to the gestures by an amount that is determined by the gesture. The drag gesture is characterized by a drag direction and a drag length, the drag direction depending on whether the drag gesture is performed toward the increment or decrement tap regions. The value control is advantageous for small display screens.

主权项

1. A method of operating a data processing system having a touch enabled display screen to alter a value of a specified variable in said data processing system, said method comprising:
providing a value control on said touch enabled display screen, said value control having an increment tap region, a decrement tap region, and a drag region, said data processing system recognizing a tap gesture executed in said increment and decrement tap regions and a drag gesture executed in said drag region, said drag gesture being characterized by a drag direction and a drag length, said drag direction depending on whether said drag gesture is performed toward said increment or decrement tap regions; and causing said data processing system to change said specified variable by an amount that depends on whether said one of said recognized gestures is a tap gesture in said increment tap region, a tap gesture in said decrement tap region, or a drag gesture.