Electronic device including projector and method for controlling the electronic device

1. A method for controlling an electronic device which executes and displays an application, the method comprising:

displaying an execution screen of the application on a touch screen;

projecting a projection image corresponding to the execution screen of the application;

receiving, through a touchscreen of the electronic device, a user input; and

processing the user input differently according to a mode of the electronic device,

wherein the mode of the electronic device comprises a normal mode and a touch screen pointer mode,

wherein the processing of the user input differently comprises:

displaying a pointer on the projection image,

moving the pointer based on the user input, if the mode of the electronic device is the touch screen pointer mode, and

removing the pointer on the projection image and controlling the user input to be used by the application, if the mode of the electronic device is the normal mode,

wherein the user input corresponds to a continuous touch gesture from a first point to a second point on the touch screen, and

wherein the moving of the pointer based on the user input comprises determining a distance and a direction of the continuous touch gesture and determining a position of the pointer after movement based on the determined distance and direction.

2. The method of claim 1 , wherein the moving of the pointer based on the user input comprises:

intercepting, when in the touch screen pointer mode, the received user input so as to not send the received user input to the application.

3. The method of claim 1 , wherein the moving of the pointer based on the user input further comprises:

determining a distance from the first point to the second point on the touch screen.

4. The method of claim 3 , wherein the moving of the pointer based on the user input further comprises:

scaling the determined distance based on a scale factor associated with a ratio between the touch screen and the projection image.

5. The method of claim 4 , wherein the moving of the pointer based on the user input further comprises:

calculating a position of the pointer after movement, based on the scaled distance.

6. The method of claim 1 , further comprising:

displaying a toggle switch for toggling between the touch screen pointer mode and the normal mode.

7. The method of claim 6 , wherein if the toggle switch is set to the normal mode, the received user input is used by the application.

8. The method of claim 1 , wherein if the received user input is a pointer execution command, an execution command is input to a portion corresponding to the pointer on the projection image.

9. An electronic device comprising:

a touch screen configured to display an execution screen of an application and receive a user input;

a projector configured to project a projection image corresponding to the execution screen of the application; and

at least one processor configured to:

process the user input differently according to a mode of the electronic device that includes a normal mode and a touch screen pointer mode,

display a pointer on the projection image and move the pointer based on the user input, if the mode of the electronic device is the touch screen pointer mode, and

remove the pointer on the projection image and control the user input to be used by the application, if the mode of the electronic device is the normal mode,

wherein the user input corresponds to a continuous touch gesture from a first point to a second point on the touch screen, and

wherein the at least one processor is further configured to determine a distance and a direction of the continuous touch gesture and determine a position of the pointer after movement based on the determined distance and direction.

10. The electronic device of claim 9 , wherein the at least one processor is further configured to intercept, when in the touch screen pointer mode, the received user input such that the received user input is not sent to the application.

11. The electronic device of claim 9 , wherein the at least one processor is further configured to determine a distance from the first point to the second point on the touch screen.

12. The electronic device of claim 11 , wherein the at least one processor is further configured to scale the determined distance based on a scale factor associated with a ratio between the touch screen and the projection image.

13. The electronic device of claim 12 , wherein the at least one processor is further configured to calculate a position of the pointer after movement, based on the scaled distance.

14. The electronic device of claim 9 , wherein the at least one processor is further configured to display a toggle switch configured to toggle between the touch screen pointer mode and the normal mode.

15. The electronic device of claim 14 , wherein when the toggle switch is set to the normal mode, the received user input is used by the application.

16. The electronic device of claim 9 , wherein when the received user input is a pointer execution command, the at least one processor is further configured to input an execution command to a portion corresponding to the pointer on the projection image.

17. A non-transitory computer-readable storage medium storing instructions that, when executed, cause at least one processor to perform the method of claim 1 .