CN112181263B - Touch screen painting operation response method, device and computing equipment - Google Patents

Abstract

The invention discloses a drawing operation response method and device of a touch screen and computing equipment, wherein the method comprises the following steps: monitoring touch points of painting operation behaviors; calculating coordinates of points to be drawn, which deviate from the touch points, according to the coordinates of the touch points of the drawing operation behaviors; and executing drawing operation at the corresponding position according to the coordinates of the point to be drawn. Therefore, according to the scheme provided by the invention, the painting operation can be performed at the corresponding position in the process of executing the painting operation behavior by the user, so that the user can see the complete painting track through the painting operation at the corresponding position, and the painting operation behavior can be accurately controlled.

Description

Touch screen painting operation response method, device and computing equipment

Technical Field

The present invention relates to the field of computer technology, and in particular to a method, device and computing equipment for responding to a painting operation of a touch screen.

Background technique

Nowadays, a large number of terminal devices can support the installation of painting software and painting operations, or support painting operations such as drawing, color filling, erasing, etc. on web pages, including painting operations performed by a mouse or touch pad. In addition, with the development of portable mobile terminals, a large number of mobile terminals are equipped with touch-enabled screens, for example, mobile phones, tablets, etc., can be directly painted using fingers.

However, when drawing on a touch screen with a finger, the drawing trajectory cannot be accurately controlled because the touch point is often blocked by the finger, which further causes deviations in line connection, eraser erasure, etc., affecting the effect of the drawing operation.

Summary of the invention

In view of the above problems, the present invention is proposed to provide a method, apparatus and computing device for responding to a painting operation of a touch screen that overcome the above problems or at least partially solve the above problems.

According to one aspect of the present invention, a method for responding to a painting operation of a touch screen is provided, comprising:

Monitor touch points for painting operations;

Calculating the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point of the drawing operation;

According to the coordinates of the point to be drawn, the drawing operation is performed at the corresponding position.

Optionally, the calculating, according to the coordinates of the touch point of the drawing operation, the coordinates of the point to be drawn that deviates from the touch point further comprises:

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the coordinates of the touch point of the drawing operation at time t and the coordinates of the touch point at time t-1.

Optionally, the calculating the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point of the painting operation at time t and the coordinates of the touch point at time t-1 further includes:

Determine the deviation direction of the point to be drawn according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 of the drawing operation;

The coordinates of the point to be drawn that deviates from the touch point at the time t-1 are calculated according to the deviation direction and the preset offset distance.

Optionally, before calculating the coordinates of the point to be drawn that deviates from the touch point at time t-1 according to the deviation direction and the preset offset distance, the method further includes:

The preset offset distance is set according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area.

Optionally, the calculating the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point of the painting operation at time t and the coordinates of the touch point at time t-1 further includes:

Determine a relative position of the touch point at time t compared to the touch point at time t-1 according to the coordinates of the touch point at time t of the painting operation and the coordinates of the touch point at time t-1;

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

Optionally, before calculating the coordinates of the point to be drawn that deviates from the touch point according to the relative position and the coordinates of the point to be drawn at the corresponding time t-1, the method further includes:

The coordinates of the first point to be drawn are determined according to the coordinates of the first touch point of the drawing operation.

Optionally, the method further comprises: presetting a reference direction;

The calculating, according to the coordinates of the touch point of the drawing operation, the coordinates of the point to be drawn that deviates from the touch point further comprises:

According to the coordinates of the touch point of the drawing operation, the coordinates of the point to be drawn whose distance from the touch point is a preset offset distance are calculated in a reference direction.

Optionally, the method further includes:

Detecting a touch area of the touch point on the screen, and judging whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

The monitoring of the touch points of the painting operation behavior is specifically: if the painting operation behavior is a finger touch behavior, then monitoring the touch points of the painting operation behavior.

According to another aspect of the present invention, there is provided a painting operation response device for a touch screen, comprising:

A monitoring module, adapted to monitor touch points of painting operation behaviors;

A calculation module, adapted to calculate the coordinates of a point to be drawn that deviates from the touch point according to the coordinates of the touch point of the drawing operation;

The drawing module is adapted to perform drawing operations at corresponding positions according to the coordinates of the points to be drawn.

Optionally, the calculation module is further adapted to:

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the coordinates of the touch point of the drawing operation at time t and the coordinates of the touch point at time t-1.

Optionally, the calculation module is further adapted to:

Determine the deviation direction of the point to be drawn according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 of the drawing operation;

The coordinates of the point to be drawn that deviates from the touch point at the time t-1 are calculated according to the deviation direction and the preset offset distance.

Optionally, the device further comprises:

The setting module is adapted to set a preset offset distance according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area.

Optionally, the calculation module is further adapted to:

Determine a relative position of the touch point at time t compared to the touch point at time t-1 according to the coordinates of the touch point at time t of the painting operation and the coordinates of the touch point at time t-1;

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

Optionally, the device further comprises:

The initialization module is adapted to determine the coordinates of the first point to be drawn according to the coordinates of the first touch point of the drawing operation.

Optionally, the device further comprises: a setting module, adapted to preset a reference direction;

The calculation module is further adapted to calculate, according to the coordinates of the touch point of the drawing operation, the coordinates of a point to be drawn whose distance from the touch point is a preset offset distance in a reference direction.

Optionally, the device further comprises:

A judgment module, adapted to detect a touch area of a touch point on the screen, and judge whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

The detection module is further adapted to monitor the touch point of the painting operation if the painting operation is a finger touch.

According to another aspect of the present invention, there is provided a computing device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus;

The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute an operation corresponding to the above-mentioned touch screen painting operation response method.

According to another aspect of the present invention, a computer storage medium is provided, wherein at least one executable instruction is stored in the storage medium, and the executable instruction enables a processor to execute an operation corresponding to the above-mentioned touch screen painting operation response method.

According to the method, device and computing device for responding to painting operations of a touch screen of the present invention, for each touch point of the painting operation behavior, a point to be drawn is determined at a position deviating from the touch point, and synchronous drawing is achieved at a position deviating from the painting trajectory by connecting the points to be drawn, so as to avoid affecting the user's control of the painting trajectory due to the obstruction of the painting trajectory. It can be seen that the scheme of the present invention can enable the user to accurately control the painting operation behavior according to the trajectory of the synchronous drawing by performing synchronous drawing at a position deviating from the painting trajectory.

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

BRIEF DESCRIPTION OF THE DRAWINGS

Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

FIG1 is a flow chart showing a method for responding to a painting operation of a touch screen according to an embodiment of the present invention;

FIG2 shows a flow chart of a method for responding to a painting operation of a touch screen according to another embodiment of the present invention;

FIG3 is a schematic diagram showing a method of calculating the coordinates of a point to be drawn by using method 1 in a specific embodiment of the present invention;

FIG4 is a schematic diagram showing the effect of a painting operation response of a touch screen in a specific embodiment;

FIG5 shows a flow chart of a method for responding to a painting operation of a touch screen according to yet another embodiment of the present invention;

FIG6 shows a functional block diagram of a painting operation response device of a touch screen according to an embodiment of the present invention;

FIG. 7 shows a schematic diagram of the structure of a computing device according to an embodiment of the present invention.

Detailed ways

The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

FIG1 shows a flow chart of a method for responding to a painting operation of a touch screen according to an embodiment of the present invention. As shown in FIG1 , the method includes:

Step S101: monitoring the touch points of the painting operation.

The scheme of the present invention mainly draws a synchronous trajectory identical to the drawing trajectory at a position deviating from the drawing trajectory in the touch screen when performing a drawing operation in the touch screen, so as to avoid affecting the user's drawing control due to the drawing trajectory being blocked by the finger.

The touch point refers to a pixel point that contacts the touch screen during the drawing operation.

By monitoring the touch points of the painting operation, the painting trajectory of the painting operation can be determined, thereby facilitating synchronous drawing at corresponding positions deviating from the painting trajectory.

Step S102: Calculate the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point of the drawing operation.

Among them, there is a corresponding relationship between the point to be drawn and the touch point of the painting operation behavior. For each touch point involved in the painting operation behavior, the coordinates of the corresponding point to be drawn need to be calculated, but the present invention does not limit the specific calculation method. It can be understood by those skilled in the art that any calculation method that can determine a fixed corresponding relationship with the touch point is included in the scope of the present invention.

Specifically, the coordinates of the touch point reflect the touch position on the touch screen. The coordinates of the point to be drawn on the touch screen that deviates from the touch position are calculated based on the touch position. Then, the point to be drawn that is not obstructed and corresponds to the touch point involved in the painting operation can be determined at the position deviating from the touch point.

Step S103: performing a drawing operation at a corresponding position according to the coordinates of the point to be drawn.

By connecting the coordinate position of the currently calculated point to be drawn with the coordinate position of the point to be drawn calculated at the previous moment, synchronous drawing of the drawing trajectory can be achieved.

For example, when a user is performing a drawing operation, the corresponding point to be drawn is determined at a certain distance from the touch point based on the coordinates of the new touch point detected in real time, and then a synchronous trajectory consistent with the drawing trajectory can be drawn by connecting the points to be drawn.

According to the touch screen painting operation response method provided by this embodiment, for each touch point of the painting operation behavior, a point to be drawn is determined at a position deviating from the touch point, and synchronous drawing is achieved at a position deviating from the painting trajectory through the connection of the points to be drawn, so as to avoid affecting the user's control of the painting trajectory due to the obstruction of the painting trajectory. It can be seen that the scheme of the present invention can enable the user to accurately control the painting operation behavior according to the trajectory of the synchronous drawing by performing synchronous drawing at a position deviating from the painting trajectory.

FIG2 shows a flow chart of a method for responding to a painting operation of a touch screen according to another embodiment of the present invention. In this embodiment, the coordinates of the point to be drawn are calculated based on the coordinates of the touch points detected at two consecutive moments. As shown in FIG2 , the method includes:

Step S201: Detect the touch area of the touch point on the screen, and determine whether the painting operation is a finger touch according to the size of the touch area; if the painting operation is a finger touch, monitor the touch point of the painting operation.

In this embodiment, whether the painting operation is a finger touch behavior is determined by the size of the touch area. In practice, finger painting is often larger than the touch area when painting with tools such as a painting pen. When the number of pixels contained in the touch area exceeds a preset number, the painting operation is determined to be a finger touch behavior. The touch screen can then respond to the finger touch operation to perform synchronous drawing at a position that deviates from the painting trajectory.

Specifically, the user can select a drawing tool on the touch screen and then perform a corresponding drawing operation with a finger, for example, select an eraser and erase with a finger. When the drawing operation behavior is determined to be a finger touch behavior, the touch point of the drawing operation behavior is monitored, wherein the touch point changes continuously as the drawing operation behavior is performed, and accordingly, a new touch point can be detected at a preset time interval, for example, once every 5 milliseconds.

Step S202: Calculate the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 during the painting operation.

The touch point at time t refers to the contact point of the painting operation on the touch screen at the current time; the touch point at time t-1 refers to the contact point of the painting operation on the touch screen detected at the previous time closest to the current time.

Specifically, the coordinates of the two touch points corresponding to time t and time t-1 can reflect the drawing line segment within the time interval from time t-1 to time t. Whenever a new touch point is detected, the coordinates of the point to be drawn are calculated based on the drawing line segment, so that the relative position of the coordinates of the point to be drawn and the drawing line segment is fixed. Optionally, the distance from the point to be drawn to the drawing line segment is a certain value, or the line connecting the point to be drawn and the point to be drawn determined at the previous moment is the same as the trajectory of the drawing line segment, for example, the inclination angle and the line segment distance are the same.

Furthermore, each time a new touch point is detected, the coordinates of the point to be drawn that deviates from the touch point can be calculated according to the coordinates of the two touch points corresponding to time t and time t-1 in one of the following ways.

Method 1: Determine the deviation direction of the point to be drawn based on the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 of the drawing operation; wherein the deviation direction indicates the distance straight line where the point to be drawn is located, and indicates that the point to be drawn is located in a specific segment of the distance straight line divided by the drawing line segment, wherein the drawing line segment refers to the line segment between the touch point at time t-1 and the touch point at time t. Specifically, the intersection point through which the distance line passes can be selected on the drawing segment according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1. For example, the midpoint, starting point or end point of the drawing segment is determined as the intersection point, and the straight line passing through the intersection point and perpendicular to the drawing segment is the distance line where the point to be drawn is located; the positive direction of the distance line is selected according to the drawing direction from the touch point at time t-1 to the touch point at time t, and optionally, the direction at 90 degrees or 270 degrees clockwise along the drawing direction is selected as the positive direction of the distance line, or the direction at 90 degrees or 270 degrees counterclockwise along the drawing direction is selected as the positive direction of the distance line; and since the distance line will be divided into two segments by the drawing segment, after the positive direction of the distance line is determined, the segment on the same side as the positive direction of the distance line is determined as the specific segment where the point to be drawn is located. Then, the coordinates of the point to be drawn that deviates from the touch point at time t-1 are calculated according to the deviation direction and the preset offset distance, wherein the preset offset distance refers to the distance of the point to be drawn compared to the drawing line segment, that is, the position of the point to be drawn is further locked according to the preset offset distance on a specific segment of the distance line, and then the coordinates of the point to be drawn are obtained. It should be noted here that the preset offset distance can be a fixed constant, such as 20 mm, or a variable adjusted according to actual needs. Optionally, the preset offset distance is set according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area. In practice, the larger the area where the finger presses the screen, the more content is blocked. Accordingly, a larger preset offset distance is set to make the synchronous drawing trajectory deviate further from the user's drawing trajectory, so that the user can view the synchronous drawing trajectory. In specific implementation, the preset offset distance can be set according to the size of the touch area of the first touch point when the user performs the drawing operation behavior, and then during the execution of this drawing operation behavior, the preset offset distance is kept unchanged to ensure the consistency of the synchronous drawing.

To facilitate the understanding of the above-mentioned method 1, a specific example is used for explanation below: FIG3 shows a schematic diagram of calculating the coordinates of the points to be drawn using method 1 in a specific embodiment of the present invention. In this specific example, the midpoint of the drawing line segment is selected as the intersection point through which the distance line passes, and the direction of 90 degrees counterclockwise along the drawing direction is selected as the positive direction of the distance line, and it is assumed that the preset offset distance is △. As shown in FIG3 , it is assumed that after the first touch point of the painting operation, i.e., touch point 1, is monitored, a detection is performed every 5 milliseconds. When touch point 2 is detected, the coordinates of midpoint 1 are calculated based on the coordinates of touch point 1 and touch point 2, i.e., the coordinates of the intersection through which the distance line passes are obtained. Since the distance line is perpendicular to the drawing line segment, the straight line expression of the distance line can be calculated, i.e., the expression of straight line d1 in FIG3 . The drawing line segment between touch point 1 and touch point 2 divides the distance line into two segments, i.e., the dotted line segment and the solid line segment of straight line d1. According to the positive direction of the selected distance line, it can be determined that the point to be drawn should be located on the solid line segment. Then, a point with a distance △ from midpoint 1 is determined on the solid line segment of straight line d1, and the coordinates of point 1 to be drawn are obtained. Similarly, when touch point 3 is detected, the distance line d2 is determined based on the coordinates of touch point 2 and touch point 3, and a point with a distance △ from midpoint 2 is determined on the solid line segment of distance line d2, and the coordinates of point 2 to be drawn are obtained.

It should be noted that when the coordinates of the points to be drawn are specifically calculated using method 1, it is not limited to the example in FIG. 3 above. For example, the intersection point through which the distance line passes can be any point on the drawing line segment, and the positive direction of the distance line can also be a direction of 270 degrees counterclockwise along the drawing direction. In addition, the intervals between the touch points in FIG. 3 above are enlarged compared to the actual situation. In practice, the time interval for detecting touch points is very short, usually at the level of seconds or milliseconds, so the distance between the touch points is very close. Accordingly, the drawing line segment between adjacent touch points can be approximately regarded as a straight line.

Through the above method 1, whenever a new touch point is detected at the current time t, the coordinates of the point to be drawn corresponding to the touch point at the time t-1 can be determined, and the positive direction of the selected distance line is related to the drawing direction. During the drawing process, as the drawing direction changes, the positive direction of the distance line is different. Accordingly, the synchronous drawing process can have a follow-up effect.

Method 2: According to the coordinates of the touch point at time t of the painting operation and the coordinates of the touch point at time t-1, determine the relative position of the touch point at time t compared to the touch point at time t-1; according to the relative position and the coordinates of the point to be drawn corresponding to time t-1, calculate the coordinates of the point to be drawn that deviates from the touch point. In this method, the coordinates of the point to be drawn corresponding to the touch point at the current moment are obtained by offsetting the direction and distance corresponding to the relative position on the basis of the coordinates of the point to be drawn at the previous moment. Among them, the coordinates of the first point to be drawn need to be determined by initialization, and the coordinates of the first point to be drawn can be determined according to the coordinates of the first touch point of the painting operation. Optionally, the coordinates of the first point to be drawn are determined according to the position of the first touch point in the touch screen. For example, when the distance between the first touch point and the edge of the touch screen is less than a preset value, the first point to be drawn is determined at a position far away from the edge, so as to avoid the coordinates of the newly determined point to be drawn moving out of the touch screen during the execution of the subsequent painting operation, which is not conducive to user viewing.

For example, the coordinates of the first touch point are (1, 1). Assuming that the lower edge of the touch screen is the horizontal axis and the left edge is the vertical axis, the coordinates (1, 1) are located at the lower left corner of the touch screen, that is, close to the left and lower edges of the touch screen. At this time, it can be determined that the coordinates of the first point to be drawn are far away from the two edges, for example, (1.5, 1.5); the coordinates of the second touch point are detected to be (2, 2), and the relative position of the second touch point compared to the first touch point is: the horizontal and vertical coordinates of the second touch point compared to the first touch point are both added by 1. Then, based on the coordinates of the first point to be drawn (1.5, 1.5), the horizontal axis coordinates are added by 1, and the coordinates of the second point to be drawn are obtained as (2.5, 2.5).

Through the above-mentioned method 2, whenever a new touch point is detected, the coordinates of the point to be drawn corresponding to the touch point at the current moment can be quickly calculated based on the change in the relative position of the touch point and the coordinates of the point to be drawn determined historically, that is, the point to be drawn corresponding to the new touch point can be determined in real time, which is conducive to improving the real-time performance of synchronous drawing and avoiding delays in synchronous drawing.

Step S203: performing a drawing operation at a corresponding position according to the coordinates of the point to be drawn.

Specifically, each time the coordinates of a point to be drawn are calculated, the point to be drawn is connected with the historical points to be drawn according to the coordinates of the point to be drawn to perform the drawing operation at the corresponding position. By timely connecting the newly determined point to be drawn with the point to be drawn at the previous moment, synchronous drawing can be completed, so that the user can view the synchronous trajectory at a position deviating from the drawing trajectory of the current drawing operation behavior, which is convenient for accurate drawing control.

FIG4 shows a schematic diagram of the effect of the painting operation response of a touch screen in a specific embodiment. As shown in FIG4 , an auxiliary tool (such as a paintbrush) can be displayed in the painting area, and its pen tip is a drawing point. When a finger touches the screen, its contact point is a touch point. When the finger continues to paint (such as drawing a line, from point A to point B is the touch point running track, and the dot and line may not exist in the real scene), the auxiliary tool moves synchronously from point a to point b and draws a line. The line is a synchronously drawn line, and the relative distance between the finger and the auxiliary tool remains unchanged during the movement.

According to the painting operation response method of the touch screen provided by this embodiment, for each touch point of the painting operation behavior, the coordinates of the point to be drawn are calculated according to the coordinates of the touch points detected at two adjacent moments, so that the line connecting the points to be drawn can be kept consistent with the painting trajectory, while avoiding the influence of the user's control over the painting trajectory due to the obstruction of the painting trajectory, and allowing the user to view the synchronous trajectory consistent with the painting trajectory. It can be seen that the scheme of the present invention can enable the user to accurately control the painting operation behavior according to the synchronous drawing trajectory by performing synchronous drawing at a position deviating from the painting trajectory.

FIG5 shows a flow chart of a method for responding to a painting operation of a touch screen according to another embodiment of the present invention. In this embodiment, only the coordinates of the touch point detected at the current moment are used to calculate the coordinates of the point to be drawn. As shown in FIG5 , the method includes:

Step S501: Detect the touch area of the touch point on the screen, and determine whether the painting operation is a finger touch according to the size of the touch area; if the painting operation is a finger touch, monitor the touch point of the painting operation.

Step S502: Preset a reference direction, and calculate the coordinates of a point to be drawn whose distance from the touch point to the touch point is a preset offset distance in the reference direction according to the coordinates of the touch point of the drawing operation.

The reference direction may be any direction in the plane of the touch screen, and optionally, the reference direction is a direction parallel to any edge of the touch screen and toward any remaining adjacent edge, so that the synchronous track of synchronous drawing is aligned with the drawing track in the horizontal or vertical direction, thereby facilitating accurate control by the user. For example, the reference direction is set to be parallel to the left and right edges of the touch screen and toward the upper edge.

Specifically, after the reference direction is set, whenever a new touch point is detected, a drawing line parallel to the reference direction and passing through the touch point is determined, and then the coordinates of a point to be drawn whose distance from the touch point is a preset offset distance are determined on the drawing line, and the point to be drawn is a point whose relative direction relative to the touch point is the reference direction. The setting of the preset offset distance can be referred to the description of the embodiment corresponding to FIG. 2, which will not be repeated here.

For example, assuming that the lower edge of the touch screen is the horizontal axis, the left edge is the vertical axis, the reference direction is the direction parallel to the left edge and upward in the plane of the touch screen, and the preset offset distance is △, if the painting operation draws a rectangle, and the coordinates of the detected touch points are (1, 1), (2, 1), (2, 2), (1, 2) and (1, 1), each time a new touch point is detected, the coordinates of the corresponding point to be drawn are calculated, and the obtained coordinates of the point to be drawn are (1, 1+△), (2, 1+△), (2, 2+△), (1, 2+△) and (1, 1+△).

Step S503: performing a drawing operation at a corresponding position according to the coordinates of the point to be drawn.

The implementation principle and process of the above-mentioned step S501 and step S503 in this embodiment can refer to the description of step S201 and step S203 in the embodiment corresponding to Figure 2, and will not be repeated here.

According to the painting operation response method of the touch screen provided by this embodiment, for each touch point of the painting operation behavior, the coordinates of the point to be drawn corresponding to the touch point can be calculated only based on the coordinates of the touch point detected at the current moment, so that the line connecting the points to be drawn can be kept consistent with the painting trajectory, while avoiding the influence of the user's control over the painting trajectory due to the obstruction of the painting trajectory, and improving the efficiency of synchronous drawing. It can be seen that the scheme of the present invention can enable the user to accurately control the painting operation behavior according to the trajectory of the synchronous drawing by performing synchronous drawing at a position deviating from the painting trajectory.

FIG6 shows a functional block diagram of a touch screen painting operation response device according to an embodiment of the present invention. As shown in FIG6 , the device includes:

A monitoring module 601, adapted to monitor the touch points of the painting operation;

A calculation module 602, adapted to calculate the coordinates of a point to be drawn that deviates from the touch point according to the coordinates of the touch point of the drawing operation;

The drawing module 603 is adapted to perform a drawing operation at a corresponding position according to the coordinates of the point to be drawn.

In an optional embodiment, the calculation module is further adapted to:

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the coordinates of the touch point of the drawing operation at time t and the coordinates of the touch point at time t-1.

In an optional embodiment, the calculation module is further adapted to:

Determine the deviation direction of the point to be drawn according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 of the drawing operation;

The coordinates of the point to be drawn that deviates from the touch point at the time t-1 are calculated according to the deviation direction and the preset offset distance.

In an optional embodiment, the device further includes:

The setting module is adapted to set a preset offset distance according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area.

In an optional embodiment, the calculation module is further adapted to:

Determine a relative position of the touch point at time t compared to the touch point at time t-1 according to the coordinates of the touch point at time t of the painting operation and the coordinates of the touch point at time t-1;

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

In an optional embodiment, the device further comprises:

The initialization module is adapted to determine the coordinates of the first point to be drawn according to the coordinates of the first touch point of the drawing operation.

In an optional embodiment, the device further comprises: a setting module, adapted to preset a reference direction;

The calculation module is further adapted to calculate, according to the coordinates of the touch point of the drawing operation, the coordinates of a point to be drawn whose distance from the touch point is a preset offset distance in a reference direction.

In an optional embodiment, the device further includes:

A judgment module, adapted to detect a touch area of a touch point on the screen, and judge whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

The detection module is further adapted to monitor the touch point of the painting operation if the painting operation is a finger touch.

An embodiment of the present application provides a non-volatile computer storage medium, wherein the computer storage medium stores at least one executable instruction, and the computer executable instruction can execute the painting operation response method of the touch screen in any of the above method embodiments.

FIG. 7 shows a schematic diagram of the structure of a computing device according to an embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the computing device.

As shown in FIG. 7 , the computing device may include: a processor (processor) 702 , a communications interface (Communications Interface) 704 , a memory (memory) 706 , and a communication bus 708 .

in:

The processor 702 , the communication interface 704 , and the memory 706 communicate with each other via a communication bus 708 .

The communication interface 704 is used to communicate with other devices such as clients or other servers.

The processor 702 is used to execute the program 710, and specifically can execute the relevant steps in the above-mentioned embodiment of the touch screen painting operation response method.

Specifically, the program 710 may include program codes, which include computer operation instructions.

The processor 702 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the computing device may be processors of the same type, such as one or more CPUs; or may be processors of different types, such as one or more CPUs and one or more ASICs.

The memory 706 is used to store the program 710. The memory 706 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

The program 710 may be specifically configured to enable the processor 702 to perform the following operations:

Monitor touch points for painting operations;

Calculating the coordinates of the point to be drawn that deviates from the touch point according to the coordinates of the touch point of the drawing operation;

According to the coordinates of the point to be drawn, the drawing operation is performed at the corresponding position.

In an optional embodiment, the program 710 can be further used to enable the processor 702 to perform the following operations: based on the coordinates of the touch point of the painting operation at time t and the coordinates of the touch point at time t-1, calculate the coordinates of the point to be drawn that deviates from the touch point.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations: determine the deviation direction of the point to be drawn according to the coordinates of the touch point at time t and the coordinates of the touch point at time t-1 of the drawing operation;

The coordinates of the point to be drawn that deviates from the touch point at the time t-1 are calculated according to the deviation direction and the preset offset distance.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations: setting a preset offset distance according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations:

Determine a relative position of the touch point at time t compared to the touch point at time t-1 according to the coordinates of the touch point at time t of the painting operation and the coordinates of the touch point at time t-1;

The coordinates of the point to be drawn that deviates from the touch point are calculated according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations: determining the coordinates of the first point to be drawn according to the coordinates of the first touch point of the drawing operation.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations: preset a reference direction;

According to the coordinates of the touch point of the drawing operation, the coordinates of the point to be drawn whose distance from the touch point is a preset offset distance are calculated in a reference direction.

In an optional implementation, the program 710 may be further configured to enable the processor 702 to perform the following operations:

Detecting a touch area of the touch point on the screen, and judging whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

If the painting operation behavior is a finger touch behavior, the touch point of the painting operation behavior is monitored.

The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing such systems. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages can be utilized to realize the content of the present invention described herein, and the description of the above specific languages is for disclosing the best mode of the present invention.

In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and/or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all functions of some or all components of the painting operation response device of the touch screen according to an embodiment of the present invention. The present invention may also be implemented as a device or device program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program for implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims (14)

1. A drawing operation response method of a touch screen, comprising:

monitoring touch points of painting operation behaviors;

calculating coordinates of points to be drawn, which deviate from the touch points, according to the coordinates of the touch points of the painting operation behaviors at two continuous moments, wherein the coordinates of the touch points and the coordinates of the points to be drawn have a fixed corresponding relation;

According to the coordinates of the point to be drawn, drawing operation is carried out at the corresponding position;

the calculating coordinates of the point to be drawn deviating from the touch point according to the coordinates of the touch point of the drawing operation behavior at two consecutive moments further includes:

determining the deviation direction of a point to be drawn according to coordinates of touch points of the painting operation behaviors at two continuous moments, wherein the two continuous moments comprise a t-1 moment; the deviating direction is a direction perpendicular to a line segment between the touch points at the two continuous moments;

and calculating coordinates of points to be drawn of the touch points deviated from the t-1 moment according to the deviation direction and the preset deviation distance in the deviation direction.

2. The method according to claim 1, wherein before the calculating coordinates of the point to be drawn of the touch point deviated from the t-1 moment according to the deviation direction and the preset deviation distance, the method further comprises:

and setting a preset offset distance according to the size of the touch area of the touch point, wherein the preset offset distance is proportional to the size of the touch area.

3. The method of claim 1, wherein the calculating coordinates of a point to be drawn that is offset from the touch point according to coordinates of the touch point of the drawing operation behavior at two successive moments further comprises:

Determining the relative position of the touch point at the time t compared with the touch point at the time t-1 according to the coordinates of the touch points of the painting operation behaviors at two continuous moments, wherein the two continuous moments comprise the time t-1 and the time t;

and calculating the coordinates of the point to be drawn, which deviates from the touch point, according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

4. A method according to claim 3, wherein before said calculating coordinates of a point to be drawn that deviate from the touch point from the relative position and coordinates of a point to be drawn corresponding to time t-1, the method further comprises:

and determining the coordinates of the first point to be drawn according to the coordinates of the first touch point of the drawing operation behavior.

5. The method of claim 1, wherein the method further comprises: presetting a reference direction;

the calculating coordinates of the point to be drawn deviating from the touch point according to the coordinates of the touch point of the drawing operation behavior at two consecutive moments further includes:

and calculating the coordinates of the point to be drawn, of which the distance between the point and the touch point is a preset offset distance, in the reference direction according to the coordinates of the touch points of the painting operation behaviors at two continuous moments.

6. The method of any of claims 1-5, wherein the method further comprises:

detecting a touch area of a touch point on a screen, and judging whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

the touch point for monitoring the painting operation behavior is specifically: and if the drawing operation behavior is a finger touch behavior, monitoring touch points of the drawing operation behavior.

7. A drawing operation response device of a touch screen, comprising:

the monitoring module is suitable for monitoring touch points of painting operation behaviors;

the computing module is suitable for computing coordinates of a point to be drawn, which deviates from the touch point, according to the coordinates of the touch point of the painting operation behaviors at two continuous moments, wherein the coordinates of the touch point and the coordinates of the point to be drawn have a fixed corresponding relation;

the drawing module is suitable for executing drawing operation at the corresponding position according to the coordinates of the point to be drawn;

the computing module is further suitable for determining the deviation direction of the point to be drawn according to the coordinates of the touch point of the painting operation behavior at two continuous moments, wherein the two continuous moments comprise a t-1 moment; the deviating direction is a direction perpendicular to a line segment between the touch points at the two continuous moments;

And calculating coordinates of points to be drawn of the touch points deviated from the t-1 moment according to the deviation direction and the preset deviation distance in the deviation direction.

8. The apparatus of claim 7, wherein the apparatus further comprises:

the setting module is suitable for setting a preset offset distance according to the size of the touch area of the touch point, wherein the preset offset distance is in direct proportion to the size of the touch area.

9. The apparatus of claim 7, wherein the computing module is further adapted to:

determining the relative position of the touch point at the time t compared with the touch point at the time t-1 according to the coordinates of the touch points at two continuous moments of the painting operation behavior, wherein the two continuous moments comprise the time t-1 and the time t;

and calculating the coordinates of the point to be drawn, which deviates from the touch point, according to the relative position and the coordinates of the point to be drawn corresponding to the time t-1.

10. The apparatus of claim 9, wherein the apparatus further comprises:

and the initialization module is suitable for determining the coordinates of the first point to be drawn according to the coordinates of the first touch point of the drawing operation behavior.

11. The apparatus of claim 7, wherein the apparatus further comprises: the setting module is suitable for presetting a reference direction;

The computing module is further adapted to: and calculating the coordinates of the point to be drawn, of which the distance between the point and the touch point is a preset offset distance, in the reference direction according to the coordinates of the touch points of the painting operation behaviors at two continuous moments.

12. The apparatus according to any one of claims 7-11, wherein the apparatus further comprises:

the judging module is suitable for detecting a touch area of a touch point on a screen and judging whether the painting operation behavior is a finger touch behavior according to the size of the touch area;

the detection module is suitable for monitoring touch points of the painting operation behaviors if the painting operation behaviors are finger touch behaviors.

13. A computing device, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;

the memory is configured to store at least one executable instruction, where the executable instruction causes the processor to perform an operation corresponding to the drawing operation response method of the touch screen according to any one of claims 1 to 6.

14. A computer storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the method of responding to a drawing operation of a touch screen as claimed in any one of claims 1 to 6.