Gesture control method, apparatus, terminal device, and storage medium

1. A method, comprising:

detecting a first touch action performed on a touchscreen of a terminal device;

obtaining a first contact area of the first touch action on the touchscreen by:

obtaining a quantity of pixels (m) of the first touch action in a contact region of the touchscreen, a total quantity of pixels (n) included in the touchscreen, and a total area (s) occupied by the touchscreen; and

obtaining the first contact area of the first touch action on the touchscreen by calculation using a formula s*(m/n);

obtaining, using a gravity acceleration sensor of the terminal device, a first z-axis acceleration generated in response to identifying that the first touch action is in contact with the touchscreen;

identifying that the first touch action is a first joint touch action in response to identifying that the first contact area is larger than a preset area and the first z-axis acceleration is greater than a preset acceleration;

identifying a first gesture type corresponding to the first joint touch action as a three-point single-tap gesture type;

calling a full-screen capture function of the terminal device in response to identifying that the first gesture type is the three-point single-tap gesture type;

detecting a second touch action performed on the touchscreen;

obtaining a second contact area of the second touch action on the touchscreen and a second z-axis acceleration generated in response to identifying that the second touch action is in contact with the touchscreen;

identifying that the second touch action is a second joint touch action in response to identifying that the second contact area is larger than the preset area and the second z-axis acceleration is greater than the preset acceleration;

identifying a second gesture type corresponding to the second joint touch action as an S-track gesture type; and

calling a photographing function of the terminal device in response to identifying that the second gesture type is the S-track gesture type.

2. The method of claim 1 , wherein prior to identifying the first gesture type, the method comprises

determining that a user interface on which the first joint touch action is performed is the user interface of an instant communications software and wherein the full-screen capture function is called based on the first gesture type being the three-point single-tap gesture type and the user interface being the user interface of the instant communications software.

3. The method of claim 1 , wherein identifying the first gesture type and calling the full-screen capture function comprises:

determining a user interface on which the first joint touch action is performed;

querying an application program associated with the three-point single-tap gesture type; and

starting the application program in response to identifying that the user interface on which the first joint touch action is performed is a system desktop of the terminal device.

4. The method of claim 1 , wherein before detecting the first touch action, the method further comprises:

customizing a mapping relationship between the full-screen capture function and the three-point single-tap gesture type; and

storing the mapping relationship in a mapping relationship database.

5. The method of claim 1 , further comprising:

determining a user interface on which the first joint touch action is performed;

querying an application program associated with the first gesture type; and

closing the application program in response to identifying that the user interface on which the first joint touch action is performed is a system desktop of the terminal device.

6. The method of claim 1 , further comprising:

determining a user interface on which the second joint touch action is performed; and

performing an operation on the user interface according to the second gesture type, wherein the operation comprises icon arrangement.

7. The method of claim 1 , further comprising:

determining a user interface on which the second joint touch action is performed; and

performing an operation on the user interface according to the second gesture type, wherein the operation comprises theme replacement.

8. The method of claim 1 , further comprising:

detecting a third touch action performed on the touchscreen;

obtaining a third contact area of the third touch action and a third z-axis acceleration generated when the third touch action is in contact with the touchscreen;

identifying that the third touch action is the second joint touch action in response to identifying that the third contact area is larger than the preset area and the third z-axis acceleration is greater than the preset acceleration;

identifying a third gesture type corresponding to a third touch action as a second-track gesture type; and

calling the photographing function of the terminal device in response to identifying that the third gesture type is the second-track gesture type.

9. A gesture-identification apparatus, comprising:

a gravity acceleration sensor;

a memory comprising program code; and

a processor coupled to the memory and the gravity acceleration sensor, wherein the processor is configured to execute the program code to cause the processor to be configured to:

detect a touch action performed on a touchscreen of a terminal device;

obtain a contact area of the touch action on the touchscreen, wherein the program code is configured to cause the processor to obtain the contact area by causing the processor to:

obtain a quantity of pixels (m) of the touch action in a contact region of the touchscreen, a total quantity of pixels (n) included in the touchscreen, and a total area (s) occupied by the touchscreen; and

obtain the contact area of the touch action on the touchscreen by calculation using a formula s*(m/n);

obtain, using the gravity acceleration sensor, a z-axis acceleration generated in response to identifying that the touch action is in contact with the touchscreen;

determine that the touch action is a joint touch action in response to identifying that the contact area is larger than a preset area and the z-axis acceleration is greater than a preset acceleration;

identify a gesture type corresponding to the joint touch action as a three-point single-tap gesture type;

call a full-screen capture function of the terminal device in response to identifying that the gesture type is the three-point single-tap gesture type;

detect a second touch action performed on the touchscreen;

obtain a second contact area of the touch action on the touchscreen and a second z-axis acceleration generated in response to identifying that the second touch action is in contact with the touchscreen;

identify that the second touch action is a second joint touch action in response to identifying that the second contact area is larger than the preset area and the second z-axis acceleration is greater than the preset acceleration;

identify a second gesture type corresponding to the second joint touch action as an M-type track gesture type; and

call a video recording function of the terminal device in response to identifying that the second gesture type is the M-type gesture type.

10. The gesture-identification apparatus of claim 9 , wherein in response to identifying the gesture type and calling the full-screen capture function, the program code further causes the processor to be configured to:

determine that a user interface on which the joint touch action is performed is the user interface of an instant communications software; and

call the full-screen capture function based on the gesture type being the three-point single-tap gesture type and the user interface being the user interface of the instant communications software.

11. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

determine a user interface on which the joint touch action is performed;

query an application program associated with the three-point single-tap gesture type; and

start the application program in response to identifying that the user interface on which the joint touch action is performed is a system desktop of the terminal device.

12. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

customize a mapping relationship between the full-screen capture function and the three-point single-tap gesture type; and

store the mapping relationship in a mapping relationship database.

13. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

determine a user interface on which the joint touch action is performed;

query an application program associated with the gesture type; and

close the application program in response to identifying that the user interface on which the joint touch action is performed is a system desktop of the terminal device.

14. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

determine a user interface on which the second joint touch action is performed; and

perform an operation on the user interface according to the second gesture type, wherein the operation comprises icon arrangement.

15. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

determine a user interface on which the second joint touch action is performed; and

perform an operation on the user interface according to the second gesture type, wherein the operation comprises theme replacement.

16. The gesture-identification apparatus of claim 9 , wherein the program code further causes the processor to be configured to:

detect a third touch action performed on the touchscreen;

obtain a third contact area of the third touch action and a third z-axis acceleration generated in response to identifying that the third touch action is in contact with the touchscreen;

identify that the third touch action is the second joint touch action in response to identifying that the third contact area is larger than the preset area and the third z-axis acceleration is greater than the preset acceleration;

identify a third gesture type corresponding to the third touch action as a second-track gesture type; and

call a photographing function of the terminal device in response to identifying that the third gesture type is the second-track gesture type.

17. A non-transitory storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to be configured to:

detect a touch action performed on a touchscreen of a terminal device;

obtain a contact area of the touch action on the touchscreen, wherein the computer-executable instructions are configured to cause the computer to obtain the contact area by causing the computer to:

obtain a quantity of pixels (m) of the touch action in a contact region of the touchscreen, a total quantity of pixels (n) included in the touchscreen, and a total area (s) occupied by the touchscreen; and

obtain the contact area of the touch action on the touchscreen by calculation using a formula s*(m/n);

obtain, using a gravity acceleration sensor, a z-axis acceleration generated in response to identifying that the touch action is in contact with the touchscreen;

determine that the touch action is a joint touch action in response to identifying that the contact area is larger than a preset area and the z-axis acceleration is greater than a preset acceleration;

identify a gesture type corresponding to the joint touch action as a three-point single-tap gesture type;

call a full-screen capture function of the terminal device in response to identifying that the gesture type is the three-point single-tap gesture type;

detect a second touch action performed on the touchscreen;

obtain a second contact area of the touch action on the touchscreen and a second z-axis acceleration generated in response to identifying that the second touch action is in contact with the touchscreen;

identify that the second touch action is a second joint touch action in response to identifying that the second contact area is larger than the preset area and the second z-axis acceleration is greater than the preset acceleration;

identify a second gesture type corresponding to the second joint touch action as an S-track gesture type; and

call a photographing function of the terminal device in response to identifying that the second gesture type is the S-track gesture type.

18. The non-transitory storage medium of claim 17 , wherein the computer-executable instructions further cause the computer to be configured to:

determine a user interface on which the joint touch action is performed;

query an application program associated with the gesture type; and

close the application program in response to identifying that the user interface on which the joint touch action is performed as a system desktop of the terminal device.

19. The non-transitory storage medium of claim 17 , wherein the computer-executable instructions further cause the computer to be configured to:

determine a user interface on which the second joint touch action is performed;

and perform an operation on the user interface according to the second gesture type, wherein the operation comprises icon arrangement.

20. The non-transitory storage medium of claim 17 , wherein the computer-executable instructions further cause the computer to be configured to:

determine a user interface on which the second joint touch action is performed; and

perform an operation on the user interface according to the second gesture type, wherein the operation comprises theme replacement.