Electronic device, storage medium and method for selecting objects of the electronic device

摘要

In a method for selecting objects of an electronic device, a touch operation performed on a touch screen of the electronic device is detected. A selection region on the touch screen is determined according to a touch operation that is detected from the touch screen. The selection region is scaled according to one or more predetermined ratios when contact points of the touch operation move on the touch screen. Objects displayed on the touch screen are selected according to the determined selection region.

主权项

1. An electronic device, comprising:
a touch screen; a detection module that detects a touch operation performed on the touch screen, the touch operation comprising two contacts on two contact points of the touch screen; a determination module that determines a selection region on the touch screen according to the touch operation, the selection region being defined as a polygon region, the two contact points being two vertices of the polygon and a line formed by the two contact points being a diagonal of the polygon region; a selection module that selects one or more objects displayed on the touch screen according to the determined selection region; and
a scaling module that scales the selection region when at least one of the contact points moves on the touch screen, wherein the selection region is scaled by moving at least one of the vertexes corresponding to the at least one moving contact point and a moving distance of the corresponding vertex is calculated by multiplying a moving distance of the at least one moving contact point by a determined ratio, wherein the determined ratio is determined according to one of the following rules:(1) determining the determined ratio according to a ratio of a length of the touch screen to a length of a sample region or a ratio of a width of the touch screen to a width of the sample region, wherein the sample region is smaller than the touch screen;(2) determining the determined ratio as a first value before a predetermined time moment while the at least one of the contact points is moving on the touch screen and determining the determined ratio as a second value after the predetermined time moment while the at least one of the contact points is moving on the touch screen, wherein the first value and the second value are different; and(3) determining the determined ratio according to a ratio of a moving velocity of the at least one of the contact points to a predetermined average velocity of the contact points of the touch operation on the touch screen.