Device and method for operating on touch screen, and storage medium

A storage medium, storing therein computer readable program codes configured to be executed by one or more processors to perform operations of:

• determining a target touched point in a first area of the touch screen according to a sliding operation or a first clicking operation by a user in the first area, wherein the first area is an arcuate shape defined by a finger sliding operation prior to determining the target touched point, an upper boundary of the arcuate shape of the first area is defined by a trajectory of an upper edge of the finger sliding operation prior to determining the target touched point, and a lower boundary of the arcuate shape of the first area is defined by a trajectory of a lower edge of the finger sliding operation prior to determining the target touched point;
• determining a target mapped point in a second area of the touch screen, the target mapped point corresponding to the target touched point in the first area, the second area including an arcuate lower boundary aligned with the upper boundary of the first area, the touch screen including a third area for normal touching operation without determining a target mapped point, the third area including an arcuate upper boundary aligned with the lower boundary of the first area;
• and
• detecting a clicking operation from the user on the target touched point in the first area corresponding to the target mapped point in the second area, to thereby select the target mapped point;
• wherein the first areas, the second area and the third area of the touch screen do not overlap with each other, X1 is a first abscissa of the target touched point in the first area, X2 is a second abscissa of the target mapped point in the second area, and X1=X2;
• wherein a first ordinate in the first area corresponds to a second ordinate in the second area as follows:
• Y2−B=(H1/H2)×(Y1−A);
• Y1 is the first ordinate of the target touched point in the first area;
• Y2 is the second ordinate of the target mapped point in the second area;
• A is an ordinate corresponding to the target touched point at the abscissa of X1 on an upper boundary of the first area;
• B is an ordinate corresponding to the target mapped point at the abscissa of X1 on an upper boundary of the second area;
• H1 is a distance between the target touched point at the abscissa of X1 on the upper boundary of the first area and the target touched point at the abscissa of X1 on a lower boundary of the first area;
• and
• H2 is a distance between the target mapped point at the abscissa of X1 on the upper boundary of the second area and the target mapped point at the abscissa of X1 on a lower boundary of the second area.

A method for operating on a touch screen, the method comprising:

• determining a target touched point in a first area of the touch screen according to a sliding operation or a first clicking operation by a user in the first area, wherein the first area is an arcuate shape defined by a finger sliding operation prior to determining the target touched point, an upper boundary of the arcuate shape of the first area is defined by a trajectory of an upper edge of the finger sliding operation prior to determining the target touched point, and a lower boundary of the arcuate shape of the first area is defined by a trajectory of a lower edge of the finger sliding operation prior to determining the target touched point;
• determining a target mapped point in a second area of the touch screen, the target mapped point corresponding to the target touched point in the first area, the second area including an arcuate lower boundary aligned with the upper boundary of the first area, the touch screen including a third area for normal touching operation without determining a target mapped point, the third area including an arcuate upper boundary aligned with the lower boundary of the first area;
• and
• detecting a second clicking operation from the user on the target touched point in the first area corresponding to the target mapped point in the second area, to thereby select the target mapped point;
• wherein the first area, the second area and the third area of the touch screen do not overlap with each other, X1 is a first abscissa of the target touched point in the first area, X2 is a second abscissa of the target mapped point in the second area, and X1=X2;
• wherein a first ordinate in the first area corresponds to a second ordinate in the second area as follows:
• Y2−B=(H1/H2)×(Y1−A);
• Y1 is the first ordinate of the target touched point in the first area;
• Y2 is the second ordinate of the target mapped point in the second area;
• A is an ordinate corresponding to the target touched point at the abscissa of X1 on an upper boundary of the first area;
• B is an ordinate corresponding to the target mapped point at the abscissa of X1 on an upper boundary of the second area;
• H1 is a distance between the target touched point at the abscissa of X1 on the upper boundary of the first area and the target touched point at the abscissa of X1 on a lower boundary of the first area;
• and
• H2 is a distance between the target mapped point at the abscissa of X1 on the upper boundary of the second area and the target mapped point at the abscissa of X1 on a lower boundary of the second area.