WO2020211369A1 - Writing track adjustment method and apparatus, terminal device and storage medium - Google Patents

Abstract

Disclosed are a writing track adjustment method and apparatus, a terminal device and a storage medium. The method comprises: receiving a first touch operation acting on at least one writing track; in response to the first touch operation, determining a writing track group comprising at least two writing tracks, wherein the at least two writing tracks comprise a writing track selected by the first touch operation, and same mutually have at least one preset logic association relationship; receiving a second touch operation; and in response to the second touch operation, adjusting the display of the writing track group. By means of selecting at least one writing track, a writing track group is determined according to a plurality of writing tracks having at least one preset logic association relationship, and the writing tracks in the writing track group synchronously respond to an adjustment operation for the writing tracks. During the adjustment process, a plurality of writing tracks can be accurately selected from all the writing tracks by means of one instance of operation, and the batch selection process is easy to operate and has a high selection accuracy.

Description

Method, device, terminal equipment and storage medium for adjusting writing track

This disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201910301045.5 on April 15, 2019. The entire content of the above application is incorporated into this disclosure by reference.

Technical field

The embodiments of the present invention relate to the technical field of smart interactive tablets, for example, to a method, device, terminal device, and storage medium for adjusting writing track.

Background technique

With the development of intelligent technology, the types of electronic products that people come into contact with in daily life are becoming more and more abundant. Among them, interactive electronic products based on touch technology are becoming more and more comprehensive because of the good human-computer interaction experience. Intelligent interactive tablet is one of the representative integrated devices, suitable for meeting, teaching, business display and other group interaction occasions. This device integrates multiple functions such as projector and video conference, which can effectively improve the communication environment and present Multi-modal content improves the efficiency of group communication.

Handwriting input is an important function of the intelligent interactive tablet, which realizes the interactive full-process digitization solution of writing expression, information display and data storage in group communication. However, the intelligent interactive tablet in the related technology is very important for the secondary processing of writing expression. The batch adjustment process of part of the writing trajectories generally involves hitting multiple writing trajectories in sequence, or you need to select a specific circle selection control first, and then hand-paint the enclosed area according to the distribution of the writing trajectory to be adjusted to achieve all selection; for the sequential hit method, you need Repeated operations are performed many times, and the circle selection method needs to adapt to the distribution of the writing trajectory to draw to avoid missing or wrong selection. On the whole, the related technology is tedious to select part of the writing trajectory in batches, and the selection accuracy is not high.

Summary of the invention

This application provides a method, device, terminal device, and storage medium for correct writing trajectory adjustment to solve the technical problem of cumbersome batch selection operations for partial writing trajectories and low selection accuracy in related technologies.

In the first aspect, an embodiment of the present invention provides a method for adjusting a writing track, including:

Receiving a first touch operation acting on at least one writing track;

In response to the first touch operation, a writing track group including at least two writing tracks is determined, the at least two writing tracks include the writing tracks selected by the first touch operation, and at least one preset Logical relationship

Receiving the second touch operation;

In response to the second touch operation, the display of the writing trace group is adjusted.

Optionally, the first touch operation includes at least one touch point, the touch duration of the at least one touch point satisfies a first setting, and the at least one touch point and the at least one writing track The distance is within the first setting range.

Optionally, the touch point of the second touch operation is received within the circumscribed rectangle of the writing track group.

Optionally, the circumscribed rectangle is covered with a transparent mask.

Optionally, the method further includes:

Receiving a third touch operation outside the circumscribed rectangle;

In response to the third touch operation, switch to the writing mode.

Optionally, the logical association relationship includes a spatial containment relationship, a position combination relationship, and a spatio-temporal association relationship.

Optionally, the second touch operation includes a single-finger drag gesture, a two-finger pan gesture, a multi-finger zoom gesture, and a two-finger rotation gesture.

In the second aspect, an embodiment of the present invention also provides a writing track adjustment device, including:

The first receiving unit is configured to receive a first touch operation acting on at least one writing track;

The first response unit is configured to, in response to the first touch operation, determine a writing trace group including at least two writing traces, the at least two writing traces including the writing trace selected by the first touch operation , And at least one preset logical relationship exists with each other;

The second receiving unit is configured to receive a second touch operation;

The second response unit is configured to adjust the display of the writing track group in response to the second touch operation.

Optionally, the first touch operation includes at least one touch point, the touch duration of the at least one touch point satisfies a first setting, and the at least one touch point and the at least one writing track The distance is within the first setting range.

Optionally, the touch point of the second touch operation is received within the circumscribed rectangle of the writing track group.

Optionally, the circumscribed rectangle is covered with a transparent mask.

Optionally, the device further includes:

The third receiving unit is configured to receive a third touch operation outside the circumscribed rectangle;

The third response unit is configured to switch to the writing mode in response to the third touch operation.

Optionally, the logical association relationship includes a spatial containment relationship, a position combination relationship, and a spatio-temporal association relationship.

Optionally, the adjustment gesture includes a single-finger drag gesture, a two-finger pan gesture, a multi-finger zoom gesture, and a two-finger rotation gesture.

In the third aspect, an embodiment of the present invention also provides a terminal device, including:

One or more processors;

Memory, used to store one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors implement the writing track adjustment method according to any one of the first aspect.

In a fourth aspect, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the method for adjusting the writing track as described in the first aspect is implemented.

The method, device, terminal device, and storage medium for adjusting the writing trajectory described above are by receiving a first touch operation acting on at least one writing trajectory; in response to the first touch operation, determining a writing trajectory including at least two writing trajectories Group, the at least two writing trajectories include the writing trajectories selected by the first touch operation, and at least one preset logical association relationship exists with each other; receiving a second touch operation; responding to the second touch Control operation to adjust the display of the writing track group. At least one writing trajectory is selected through touch operation, and then a writing trajectory group is determined according to a plurality of writing trajectories that have at least one preset logical relationship with the selected writing trajectory, and the writing trajectories in the writing trajectory group respond synchronously to the writing trajectory Adjustment operation. In this adjustment process, multiple writing trajectories can be accurately selected from all writing trajectories in one operation. The batch selection process is simple to operate and has high selection accuracy. At the same time, the adjustment operation and exit operation based on the circumscribed rectangle of the writing track group are convenient for subsequent operations after selection, and adjustment and exit can be conveniently realized.

Description of the drawings

FIG. 1 is a flowchart of a method for adjusting writing track according to Embodiment 1 of the present invention;

2 is a schematic diagram of a touch input interface of a smart interactive tablet according to Embodiment 1 of the present invention;

3 is a schematic diagram of effective touch points, target writing trajectories, and associated writing trajectories in Embodiment 1 of the present invention;

4 is a schematic diagram of a writing track entering a selected state in Embodiment 1 of the present invention;

FIG. 5 is a flowchart of a method for adjusting writing track according to Embodiment 2 of the present invention;

6 to 10 are schematic diagrams of adjustment changes of Example 1 provided in Embodiment 2 of the present invention;

11-13 are schematic diagrams of adjustment changes of Example 2 provided in Embodiment 2 of the present invention;

14-16 are schematic diagrams of adjustment changes of Example 3 provided in Embodiment 2 of the present invention;

17-21 are schematic diagrams of adjustment changes of Example 4 provided in Embodiment 2 of the present invention;

22 is a schematic structural diagram of a writing track adjustment device according to Embodiment 3 of the present invention;

FIG. 23 is a schematic structural diagram of a terminal device according to Embodiment 4 of the present invention.

detailed description

The application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are used to explain the application, but not to limit the application. In addition, it should be noted that, for ease of description, the drawings only show a part of the structure related to the present application instead of all of the structure.

Example one

FIG. 1 is a flowchart of a method for adjusting a writing track according to Embodiment 1 of the present invention. The writing track adjustment method provided in the embodiment can be executed by a writing track adjustment device, the writing track adjustment device can be implemented by software and/or hardware, and the writing track adjustment device can be two or more physical devices. The physical composition can also be a physical physical composition. For example, the device for adjusting the writing track may be a mobile phone, an industrial control computer, and so on.

For ease of understanding, in the embodiments, the smart interactive tablet is used as the actual carrier, and the detailed process of adjusting target selection, association, and response adjustment during the implementation of the method for adjusting the writing track is exemplarily described. Among them, the smart interactive tablet can be an integrated device that controls the content displayed on the display tablet through touch technology and realizes human-computer interaction. It integrates a projector, an electronic whiteboard, a screen, a sound, a TV, and a video conference. One or more functions such as a terminal.

Generally speaking, the smart interactive tablet includes at least one display screen. For example, the smart interactive tablet is equipped with a display screen with touch function, and the display screen can be a capacitive screen, a resistive screen or an electromagnetic screen. In this embodiment, a smart interactive tablet is provided. In some embodiments, the user can implement touch operations by touching the display screen with a finger or a stylus. Accordingly, the smart interactive tablet 1 detects the touch position. And respond according to the touch position to realize the touch function. Typically, the smart interactive tablet is installed with at least one operating system, where the operating system may include an Android system, a Linux system, and a Windows system. In some embodiments, the smart interactive tablet can install at least one application program with writing function. Among them, the application program may be an application program that comes with the operating system, and at the same time, an application program downloaded from a third-party device or server is also installed. Optionally, in addition to the writing function, the application also has other editing functions, such as inserting tables, inserting pictures, illustration graphics, drawing tables, and drawing graphics. Among them, the drawn table or figure is a standard element for computer drawing. Computer-drawn standard elements can be understood as printed standard elements drawn by smart interactive flat panels, which are different from elements written by users.

Referring to FIG. 1, the method for adjusting the writing track may include:

Step S101: Receive a first touch operation acting on at least one writing track.

On the touch screens of smart handwriting devices such as electronic whiteboards, electronic blackboards, tablets, smart conference tablets, etc., there is a writing area for displaying input content in response to the user's writing operation. When writing in the writing area, such as by touching Touch the touch screen with a pen or finger, and the touch screen can sense changes in infrared, current, voltage or magnetic flux (corresponding to the setting type of infrared touch screen, capacitive touch screen, resistive touch screen or electromagnetic touch screen), and get The touch signal of the coordinates of the touch position and the trigger time of the touch signal, according to the coordinates of the touch position and the trigger time of the touch signal, the writing input during the process of writing each time the stylus or the user's finger is pressed until the writing stops is lifted The trajectory data of the trajectory displays the writing trajectory input by the user in the writing area of the touch screen in real time according to the trajectory data. Of course, the writing process can be writing, and any input process for displaying the operation track implemented on the touch screen of the smart handwriting device can be regarded as the writing process. The implementation of this solution is aimed at the operation of the existing writing track.

On a touch screen, there are generally three results in response to touch operations. The first is to respond to the trajectory data corresponding to the touch operation as a writing trajectory as described above. This is the most common and relatively simple Generally speaking, the regular movement of a single touch point is regarded as the input of writing trajectory; the second is to compare the number, time and/or trajectory characteristics of the touch point when the touch operation occurs. If a setting operation matches, it will trigger a certain function corresponding to the setting operation, such as pop-up menus, selected targets, etc.; the third type is complex and unconventional operations, such as random movements when the two hands and ten fingers touch. If the input cannot be processed as a writing track, nor can it match the preset operation, it will not respond to this touch operation. In this solution, if the user's touch operation belongs to the second type and matches the pre-stored setting operation of the hit writing track, it is confirmed that the trigger of the writing track hit by the touch operation is detected.

For example, in Figure 3, the three characters "creative" have been composed of multiple writing tracks. If the fingers slide freely on the display interface of "creative", a new writing track will be formed on the display interface; if the fingers are If the reception of the first touch operation is completed at the position shown in FIG. 3, the "Q" pointed by the finger is confirmed as the writing track of the first touch operation. Here, "creative" is mainly the result of human eye text recognition. In the actual bottom processing, each writing track can be simply recorded as coordinate data of multiple pixels. The smart interactive tablet itself is only drawn on the display page based on the coordinate data. Multiple writing trajectories are generated without identifying the substantive content of the combination of these writing trajectories. When rendering the writing trajectory based on pixel points, draw the pixel points according to the saved coordinate data. Based on the smooth curve drawing scheme such as Bezier curve, draw on the basis of the drawn pixels to get the complete recognition by the human eye The writing trajectory, based on this drawing method, can effectively reduce the storage space requirement of the writing trajectory and improve the rendering speed of the writing trajectory.

It should be noted that the writing trajectory shown in FIG. 3 is detected and displayed by, for example, the smart interactive tablet 1 shown in FIG. 2. In this embodiment and subsequent embodiments, for ease of description, the writing trajectory is not added to The display is performed in the smart interactive tablet 1, but the implementation process of this solution is explained through the relative change between the writing tracks.

Step S102: In response to the first touch operation, determine a writing trajectory group including at least two writing trajectories, where the at least two writing trajectories include the writing trajectories selected by the first touch operation and are mutually at least A preset logical relationship.

For group interaction scenarios, when users have the need for batch processing, it is usually an orderly combination of writing tracks. The standard for this orderly combination is described here as a logical association relationship. According to different dimensions, the logical association relationship can be Spatial containment relationship, position combination relationship, spatio-temporal association relationship, etc. For example, when the writing key needs to be emphasized, a closed figure is drawn outside the writing key, and the closed figure has a spatial containment relationship with its internal writing track; for example, when continuous handwriting input is required based on a certain preset shape (table, etc.) , The writing trajectory composing the preset shape and the writing trajectory continuously input based on this have a position combination relationship; for example, when writing a paragraph or drawing a picture continuously, based on the time of two adjacent writing trajectories during the writing or drawing process The relationship established by the relationship and the distance relationship is called the spatio-temporal association relationship. In the writing trajectory that composes the "creative" in Figure 3, the time relationship and the distance relationship between any two adjacent writing trajectories in time are very close. There is a spatiotemporal relationship between the corresponding writing trajectories.

When initial processing of the trajectory data is performed on the writing trajectory, the writing trajectories with temporal and spatial association relationships have been associated and saved in the same container, and the container can be maintained through an array, a collection, or a dictionary. If an array or set is used for maintenance, each group of associated writing traces can be saved through an array or set respectively, that is, if there are multiple sets of associated writing traces in the current display page, the same number of arrays needs to be maintained Or collection, that is, a page needs to maintain multiple arrays or collections. If a dictionary is used, a dictionary can be maintained for each display page, and a group of associated writing tracks in a display page can be saved to a page in the dictionary. In this solution, corresponding to the associated maintenance strategy of the discrete writing tracks in the display page, using a dictionary as the data structure to realize this maintenance can effectively reduce the complexity of writing track data maintenance, and the realization of the underlying data processing process is simpler.

Figure 3 shows all the writing trajectories contained in a container. The circumscribed rectangle 11 of the writing trajectory in the container is shown in the figure. It should be noted that the circumscribed rectangle 11 in Figure 3 only shows the writing trajectory maintained in a container. In the writing state, the circumscribed rectangle 11 is not displayed on the display screen.

Different types of writing trajectories can be maintained in different ways. For a closed figure and a certain preset shape, they can be integrated into a writing trajectory to exist independently. For closed graphics (such as circles, rectangles, squares, etc.) and preset shapes (five-pointed stars), the preservation of the writing trajectory is not only based on the isolated preservation of multiple writing trajectories, but as a whole figure. The overall graphics with special shape features can be saved and drawn based on a few pixels, reference points, and/or graphics parameters. For example, the saving of circles will not save the coordinate data of multiple pixels on the arc, but Save the coordinate data and radius of the center of the circle.

In some embodiments, after the writing track of the first touch operation is confirmed, all existing logical associations are confirmed. If the writing track is a track of ordinary text input or drawing, the logical association usually only exists in time and space. Association relationship: If the target track is a closed figure or a set shape, then its logical association relationship may involve the writing track in one or more containers. In this case, a writing track group includes at least one overall saved writing track and Writing traces in multiple associated containers.

In some embodiments, after the writing track group is confirmed, the current display screen pauses the touch input response, and the writing track in the writing track group can be highlighted relative to the writing track outside the writing track group. After the writing track group is confirmed, The touch operation detected from the touch screen preferentially responds to the writing trajectory in the writing trajectory group, so as to realize batch adjustment of the writing trajectory.

Step S103: Receive a second touch operation.

If the writing trajectory hit by the first touch operation is an ordinary text input or drawing trajectory, then the writing trajectory in the finally confirmed writing trajectory group is the writing trajectory (there is no temporal and spatial correlation) or the container where the writing trajectory is located Of all writing tracks. If the writing trajectory hit by the first touch operation is a closed figure, then the writing trajectory in the finally confirmed writing trajectory group is the closed figure and the writing trajectory in the container that overlaps the closed closed range. If the writing trajectory hit by the first touch operation is a set shape, then the writing trajectory in the finally confirmed writing trajectory group is the set shape and the writing trajectory in the container combined with the location where the set shape exists.

Step S104: In response to the second touch operation, adjust the display of the writing track group.

More commonly used batch adjustment gestures, such as single-finger drag gesture, two-finger pan gesture, multi-finger zoom gesture, and two-finger rotation gesture, etc. Gesture operations for determining targets are mostly implemented in smart interactive tablets, and will not be repeated here. When making adjustments, there are two ways to set the adjustment operation area to detect adjustment gestures. One is to perform gesture detection at any position on the current display interface, confirm the adjusted content according to the detected gesture, and synchronize the adjusted content (moving distance, direction, zoom ratio, rotation angle, etc.) to the writing in the writing track group The track is adjusted in batches. The other is to perform gesture detection in the area covered by the writing trajectory in the writing trajectory group, and form the effect of directly operating the target writing trajectory and the associated writing trajectory from the display. In the two methods, the underlying confirmation mechanism of the gesture detection corresponding to the adjusted parameter and the change mechanism of the display effect of the writing track in response to the adjusted parameter are the same.

The state shown in FIG. 4 is the state in FIG. 3 according to the state of receiving the first touch operation in step S101, and the writing trace in the writing trace group confirmed based on the first touch operation is highlighted in FIG. The area of is the circumscribed rectangle 11 of all writing trajectories in the writing trajectory group, which can be added to the writing trajectory projection, set the floating display effect for the writing trajectory relative to other areas, etc. The circumscribed rectangle in Figure 4 is only used to indicate the highlighted range , Not the way it is highlighted. Correspondingly, the area where the circumscribed rectangle is located can be used as the adjustment operation area, and the second touch operation is detected in this area and the related writing track is controlled to perform synchronous adjustment.

Above, by receiving a first touch operation acting on at least one writing track; in response to the first touch operation, determining a writing track group including at least two writing tracks, the at least two writing tracks including the first A writing track selected by a touch operation, and at least one preset logical relationship exists with each other; receiving a second touch operation; and adjusting the display of the writing track group in response to the second touch operation. At least one writing trajectory is selected through touch operation, and then a writing trajectory group is determined according to a plurality of writing trajectories that have at least one preset logical relationship with the selected writing trajectory, and the writing trajectories in the writing trajectory group respond synchronously to the writing trajectory Adjustment operation. In this adjustment process, multiple writing trajectories can be accurately selected from all writing trajectories in one operation. The batch selection process is simple to operate and has high selection accuracy. At the same time, the adjustment operation and exit operation based on the circumscribed rectangle of the writing track group are convenient for subsequent operations after selection, and adjustment and exit can be conveniently realized.

Example two

FIG. 5 is a flowchart of a method for adjusting writing track according to Embodiment 2 of the present invention. This embodiment is modified on the basis of the foregoing embodiment.

Referring to FIG. 5, the method for adjusting the writing track provided by this embodiment may include:

Step S201: Receive a first touch operation acting on at least one writing track.

In the implementation of this solution, the touch points detected in the first touch operation will not cause the display screen to change, but will trigger the batch adjustment process of the writing track. The first touch operation includes at least one touch point, so The touch duration of the at least one touch point is greater than the first set duration, and the distance between the at least one touch point and the at least one writing track is within a preset radius. The number of touch points required can be selected according to other interactive design solutions to avoid high false touch rates caused by conflicting operation modes or similar operation modes. For a single touch point, due to factors such as finger contact angle, finger contact strength, or smart pen tip size, its contact position may not be described by the coordinate data of one coordinate point, and its coverage may require multiple coordinate points It can be described that the position of a corresponding single touch point may be a small area constrained by coordinate data corresponding to multiple coordinate points.

In the exemplary description of this embodiment, the confirmation of the first touch operation is mainly described through a single-finger touch operation.

Step S202: In response to the first touch operation, determine a writing trajectory group including at least two writing trajectories, the at least two writing trajectories include the writing trajectories selected by the first touch operation, and mutually exist at least A preset logical relationship.

The display position of the writing track is described by coordinate data, and the position of the first touch operation is also described by coordinate data. If the coordinate data of the first touch operation (the coordinate data of at least one coordinate point) coincides with the coordinate data of a writing track Coincidence or partial coincidence, that is, the position of the first touch operation overlaps the display position of at least one writing track, and it is confirmed that the first touch operation acts on the writing track. If there are multiple stacked input writing trajectories within the scope of the first touch operation, it is determined that the lower writing trajectory (usually the writing trajectory inputted earlier) is isolated by the upper writing trajectory and not affected by the first touch operation Then, based on this judgment, the writing track (the last input writing track) displayed on top is confirmed as the writing track of the first touch operation.

If the first touch operation itself does not directly hit the writing track, that is, the coordinate data of the first touch operation does not overlap with the coordinate data of any writing track, then confirm that the writing track is within the preset radius of the first touch operation. Something happens; if there is a writing trajectory within the preset radius, it is tentatively determined as a candidate writing trajectory, and then the writing trajectory displayed on the top layer (ie, the last input writing trajectory) is confirmed as the target writing trajectory from the candidate writing trajectories. Of course, a distance-based confirmation mechanism can also be used from the alternative writing trajectories, that is, confirming that the writing trajectory closest to the first touch operation is the writing trajectory of the first touch operation.

In the implementation process, there is no context between the judgment within the preset radius and the judgment regarding the distance (or set to the top level), but it is determined that there are two constraints. For example, you can confirm the writing trajectory with the closest distance to the first touch operation, and then determine whether the writing trajectory is within a preset radius, and if yes, it will be confirmed as the writing trajectory of the first touch operation; Preset the writing trajectory within the preset radius, and then confirm that the nearest writing trajectory is the writing trajectory of the first touch operation.

The relative positional relationship between touch operation and writing trajectory, in addition to the above two, there is also the case that the writing trajectory is outside the preset radius of the touch operation, that is, the touch operation does not have the writing trajectory as a valid target. The control operation is regarded as a misoperation, or the touch operation has other interaction definitions, and the corresponding interactive response can be executed.

In some embodiments, after the writing track of the first touch operation is confirmed, that is, the logical association relationship of the writing track is queried from the corresponding data storage structure, and the writing track and the logical association relationship between the writing track are passed through the array, The collection or dictionary is maintained. After confirming the writing trajectory corresponding to the first touch operation, query the relationship status from the stored writing trajectory, and then add the writing trajectory with logical association relationship and the writing trajectory for the first touch operation The same writing track group. The writing track in the same writing track group is highlighted as a whole. In addition to highlighting the writing track itself, you can also highlight the area covered by the writing track. A simple way to set the bounding rectangle and the enclosed area corresponding to the writing track The overall highlight.

Step S203: Receive a second touch operation.

The touch point of the second touch operation is received within the circumscribed rectangle of the writing track group. The circumscribed rectangle is covered with a transparent mask. The transparent mask can be a floating layer that can detect touch operations. Only the specific gesture detected in the area covered by it will trigger the operation agreed upon by the specific gesture. The area covered by the transparent mask is the adjustment operation area. The layer is to adjust the visual presentation of the operating area. The transparent mask described in this embodiment is an example. In fact, the transparency of the mask can be preset or modified so that after the user completes the batch selection of the writing track, the subsequent adjustment operations of the user can be naturally guided as Best, avoid the need to consult the manual to perform all operations. For the operation of batch writing trajectory, there is enough operation space for the interaction of adjustment operations within the bounding rectangle, and it can also avoid the visual interference caused by the excessive operation space.

Of course, in the implementation process, adjustment controls can also be added to the four sides and/or corners of the transparent mask to adjust the coverage of the transparent mask. The adjustment of the coverage can constrain the minimum and maximum values, such as the initial external connection. Rectangle, the maximum value is for example enlarged by a certain ratio or threshold pixel. During the adjustment of the transparent mask, only the range of the adjustment operation area is changed, and the initially selected writing track is not changed. The adjustment process is based on the description of the transparent mask, and does not mean that adjustments are only made in the transparent mask.

The second touch operation includes a single-finger drag gesture, a two-finger pan gesture, a multi-finger zoom gesture, and a two-finger rotation gesture. The gesture type of the second touch operation is determined by the number of touch points, the overall movement direction, and the relative movement. Confirm the direction, etc.

Step S204: In response to the second touch operation, adjust the display of the writing track group.

In the process of adjusting the writing track in the writing track group, its movement, dragging, zooming, rotating and other operations will bring about changes in display parameters such as display position, display size, display angle, etc., adapt to the above changes, transparent mask There will be corresponding changes in the display position, display size, etc. The display angle can be adapted in two ways, one is to make the same angle change in response to the rotation operation, and the other is to adapt to the top and bottom of the writing track after rotating , The coordinates of the four leftmost and rightmost points, regenerating the circumscribed rectangle, the four sides of the circumscribed rectangle are still parallel to one coordinate axis in the coordinate system, and perpendicular to the other coordinate axis. Correspondingly, the bounding area of the circumscribed rectangle is It is the coverage area of the transparent mask.

Step S205: Receive a third touch operation outside the circumscribed rectangle.

The third touch operation has no specific requirements for the number of touch points, operation duration, motion trajectory characteristics, etc. In actual operation, operations on areas outside the writing trajectory group are deemed to have given up on the writing trajectory Group adjustment.

Step S206: In response to the third touch operation, switch to the writing mode.

If the operation gesture is detected outside the adjustment operation area, it means that the operation gesture and the batch adjustment of the writing track have no substantial influence. The selected state of the writing track is ended, and the transparent mask used to present the adjustment operation area is also cancelled. The trajectory group as a temporary combination ends here, the detection and response of the second touch operation are no longer executed, and the whole enters the writing mode before the valid touch point is detected.

The following is an exemplary description of the implementation process and beneficial effects of this solution in an application scenario.

Example 1:

Example 1 provides the adjustment of the writing track of a single text input in writing mode, please refer to Figure 6 to Figure 10.

In the display screen shown in Figure 6, there is only the writing track formed by writing text. During the writing process, the writing track confirms the spatio-temporal relationship according to the distance relationship and time relationship between the writing tracks, and finally forms as shown in Figure 6. The two groups of writing trajectories are stored in a container respectively. The writing trajectories in the two containers respectively form "creative" and "novelty", which correspond to the circumscribed rectangle 11 and the circumscribed rectangle 12 respectively. The two groups of writing trajectories overlap. The current The operation requirement is to eliminate the overlap of writing tracks. In related technologies, it is usually only possible to erase all and then rewrite, and a correction method is used to complete the elimination of overlap.

As shown in Figure 7, the effective touch point hits the last writing trajectory "one" in the circumscribed rectangle 12, that is, "one" is the target writing trajectory. The preset logical relationship existing in the current display screen is only the spatio-temporal relationship. Therefore, The associated writing trajectories of "one" are all writing trajectories other than "one" in the circumscribed rectangle 12. After confirming the writing trajectories selected in batches, all the writing trajectories in the circumscribed rectangle 12 are highlighted as a whole, as shown in Fig. 7 A solid circumscribed rectangle 12 is presented, and a transparent mask is set on the circumscribed rectangle to detect the second touch operation. In this example, it is a single-finger drag and moves in the direction indicated by the arrow. The writing track in the circumscribed rectangle 11 is not selected, and its display effect remains unchanged.

As shown in FIG. 8, after the selected writing track is dragged with a single finger, the circumscribed rectangle 11 and the circumscribed rectangle 12 are separated from each other, and the overlapping part is eliminated. At the user level, there are only 2 operations from selection to separation.

As shown in FIG. 9, based on the display effect of the writing track after responding to the second touch operation in FIG. 8, the gesture is detected outside the circumscribed rectangle 12, that is, the gesture is detected outside the adjustment operation area, enter FIG. status.

As shown in Figure 10, the selected state of the writing track in the circumscribed rectangle 12 ends, and the entire display screen returns to the normal writing mode. Compared with the state in Figure 6, the writing track in the circumscribed rectangle 11 and the circumscribed rectangle 12 has been quickly realized. The separation, the overlap is eliminated.

Example two:

The second example provides the adjustment of the writing trajectory in the teaching scene based on specific application requirements. Please refer to Figure 11-13.

In the display screen shown in Figure 11, a graphic part of a plane geometry problem is displayed. Teachers usually need to disassemble the elements in the graphic when explaining this type of problem. In related technologies, when using a smart interactive tablet for teaching , Usually edit the dismantling strategy of graphics before class and make the dismantling effect. During the teaching process, it can only be implemented according to the established strategy and cannot be adjusted according to the actual teaching status.

As shown in Figure 12, there is a temporary need to disassemble △AFC and △CFD in the actual teaching process. At this time, you can manually draw △AFC in the graphics part in the annotation state (the annotation state is a kind of writing mode). And form the corresponding writing track. According to the actual drawing method and processing method, the combination of the writing track corresponding to △AFC can be realized in different ways. After the drawing of △AFC is completed, a valid touch point is detected outside the writing trajectory, based on the distance judgment, the line segment AF is determined as the target writing trajectory, and then the associated writing trajectory (line segment FC and line segment AC) is determined, and the whole is highlighted And drag and drop to achieve temporary disassembly.

As shown in Figure 13, after the disassembly of △AFC is completed, it returns to the comment state. Refer to the disassembly process of △AFC to continue the disassembly of △CFD. Finally, △AFC and △CFD can be disassembled outside the original graphics and combined At the same time, the original graphics are kept unchanged to realize flexible and intuitive teaching information display.

Example three:

Example 3 provides the adjustment of the writing trajectory in the spatial containment relationship, please refer to Figure 14-16.

As shown in FIG. 14, there are multiple logical relationships. The writing trajectories in the circumscribed rectangle 14 and the circumscribed rectangle 15 are both temporal and spatial relationships, and the hand-painted outer rectangle 13 has a spatial inclusion relationship with the writing trajectory of the characters therein. This example focuses on the confirmation process of the target writing trajectory and the associated writing trajectory. The collective adjustment process and the mechanism for ending the selected state are the same as other examples.

As shown in Figure 15, the outer rectangle 13 hit by the effective touch point. At this time, the outer rectangle 13 is regarded as a closed figure, and the writing trajectories that have intersections within the enclosed range are regarded as associated writing trajectories. The writing trajectories are all located in the outer rectangle 13, and all are regarded as associated writing trajectories. That is to say, the selection of the outer rectangle 13 in FIG. 14 means that all the writing tracks in FIG. 14 are selected and highlighted, and the subsequent adjustments are also adjustments to all the writing tracks in FIG. 14.

As shown in FIG. 16, the effective touch point hits a writing trajectory in the circumscribed rectangle 14, and the associated writing trajectory of the target writing trajectory is other writing trajectories in the circumscribed rectangle 14. In other words, the effective touch point in FIG. 15 will cause all the writing traces in the circumscribed rectangle 14 to be highlighted. The subsequent adjustments are similar to those in Example 1.

Example four:

Example 4 provides a comprehensive adjustment plan for the table, please refer to Figure 17-Figure 21.

As shown in Figure 17, the writing trajectory includes a table, the line trajectory of the table itself is used as a writing trajectory, and the writing trajectory in a single grid of the table is a spatial association relationship. The data in the current table is a mistake in entering the birthdays of Xiao Ming and Xiao Hong, which needs to be corrected. If you use related technology, because the writing track itself is not related, you need to select one of the birthdays with the set track gesture (such as a closed writing track), move it out of the table, and then select another birthday, and move it to The correct position, and then select the birthday outside the form and move it to the correct position. If the writing tracks of the two birthdays cross during the adjustment process, the operation can only be undone and readjusted.

As shown in Figure 18-20, single-touch directly selects "August 21st", drags one finger to the correct position, single-touch returns to writing mode, single-touch directly changes "December "8th" is selected, drag with a single finger to the correct position, and return to writing mode with a single touch to complete the entire correction process. The middle operation is simple and the crossing of writing tracks is allowed.

In addition, as shown in Figure 21, if the effective touch point hits the line trajectory of the table, then all the line trajectories are regarded as the target writing trajectory, and all the writing trajectories in the table are regarded as the associated writing trajectory, that is, the selection of the line trajectory of the table is Select all the writing tracks in Figure 17.

Example three

FIG. 22 is a schematic structural diagram of a writing track adjustment device according to Embodiment 3 of the present invention. Referring to FIG. 22, the writing track adjustment device includes: a first receiving unit 301, a first responding unit 302, a second receiving unit 303, and a second responding unit 304.

Wherein, the first receiving unit 301 is configured to receive a first touch operation acting on at least one writing track; the first response unit 302 is configured to determine that the first touch operation includes at least two writing tracks in response to the first touch operation. A group of writing trajectories, the at least two writing trajectories include the writing trajectories selected by the first touch operation, and have at least one preset logical association relationship with each other; the second receiving unit 303 is configured to receive the second touch The second response unit 304 is used to adjust the display of the writing track group in response to the second touch operation. .

On the basis of the foregoing embodiment, the first touch operation includes at least one touch point, the touch duration of the at least one touch point satisfies the first setting, and the at least one touch point and the The distance of at least one writing track is within the first setting range.

On the basis of the foregoing embodiment, the touch point of the second touch operation is received within the circumscribed rectangle of the writing track group.

On the basis of the foregoing embodiment, the circumscribed rectangle is covered with a transparent mask.

On the basis of the foregoing embodiment, the device further includes:

A third receiving unit, configured to receive a third touch operation outside the circumscribed rectangle;

The third response unit is configured to switch to the writing mode in response to the third touch operation.

On the basis of the foregoing embodiment, the logical association relationship includes a spatial containment relationship, a position combination relationship, and a spatio-temporal association relationship.

On the basis of the foregoing embodiment, the adjustment gesture includes a single-finger drag gesture, a two-finger pan gesture, a multi-finger zoom gesture, and a two-finger rotation gesture. .

The writing trajectory adjustment device provided by the embodiment of the present invention is included in the writing trajectory adjustment device, and can be used to execute the writing trajectory adjustment method provided in any of the foregoing embodiments, and has corresponding functions and beneficial effects.

Example four

FIG. 23 is a schematic structural diagram of a terminal device according to Embodiment 4 of the present invention. The terminal device is a hardware presentation solution of the writing track adjustment device described above. As shown in FIG. 23, the terminal device includes a processor 410, a memory 420, an input device 430, an output device 440, and a communication device 450; the number of processors 410 in the terminal device may be one or more. In FIG. 23, one processor The processor 410 is taken as an example; the processor 410, the memory 420, the input device 430, the output device 440, and the communication device 450 in the terminal device may be connected by a bus or other means. In FIG. 23, a bus connection is taken as an example.

As a computer-readable storage medium, the memory 420 can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the writing track adjustment method in the embodiment of the present invention (for example, a writing track adjustment device The first receiving unit 301, the first responding unit 302, the second receiving unit 303, and the second responding unit 304 in ). The processor 410 executes various functional applications and data processing of the terminal device by running the software programs, instructions, and modules stored in the memory 420, that is, realizes the aforementioned writing track adjustment method.

The memory 420 may mainly include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 420 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some examples, the memory 420 may include a memory remotely provided with respect to the processor 410, and these remote memories may be connected to the terminal device through a network. Examples of the aforementioned network may include the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 430 may be used to receive inputted digital or character information, and generate key signal input related to user settings and function control of the terminal device. The output device 440 may include a display device such as a display screen. The communication device 450 is used for data communication with the image capturing module.

The aforementioned terminal equipment includes a writing track adjustment device, which can be used to implement any method of writing track adjustment, and has corresponding functions and beneficial effects.

Example five

An embodiment of the present invention also provides a storage medium containing computer-executable instructions, which are used to perform a writing trajectory adjustment method when the computer-executable instructions are executed by a computer processor, and the method includes:

Receiving a first touch operation acting on at least one writing track;

In response to the first touch operation, a writing track group including at least two writing tracks is determined, the at least two writing tracks include the writing tracks selected by the first touch operation, and at least one preset Logical relationship

Receiving the second touch operation;

In response to the second touch operation, the display of the writing trace group is adjusted.

Of course, a storage medium containing computer-executable instructions provided in an embodiment of the present invention can also perform related operations in the writing track adjustment method provided by any embodiment of the present application.

Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented with the help of software and necessary general-purpose hardware, and of course it can also be implemented with hardware, but in many cases the former is a better implementation. . Based on this understanding, the technical solution of this application essentially or the part that contributes to the related technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, Read-Only Memory (ROM), Random Access Memory (RAM), Flash memory (FLASH), hard disk or optical disk, etc., including several instructions to make a computer device (which can be a personal computer, A server, or a network device, etc.) execute the method described in each embodiment of the present application.

It is worth noting that, in the above embodiments of the writing track adjustment device, the units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; The specific names of each functional unit are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application.

Claims (18)

A method for adjusting writing track, including: Receiving a first touch operation, the first touch operation acting on at least one writing track; In response to the first touch operation, a writing track group including at least two writing tracks is determined, the at least two writing tracks include the writing tracks acted on by the first touch operation, and at least one preset Logical relationship Receiving the second touch operation; In response to the second touch operation, display adjustment of the writing trace group. The method of claim 1, wherein the receiving a first touch operation, the first touch operation acting on at least one writing track, comprises: Receiving a first touch operation, where the first touch operation includes at least one touch point, and the touch duration of the at least one touch point is greater than a first set duration; Obtain a writing trajectory that coincides with the display position of the touch point of the first touch operation as at least one writing trajectory acted on by the first touch operation; or, Obtain a writing trajectory whose distance from the touch point of the first touch operation is within a preset radius as at least one writing trajectory acted on by the first touch operation. 3. The method according to claim 2, wherein said acquiring a writing trajectory coincident with the display position of the touch point of the first touch operation as the at least one writing trajectory acted on by the first touch operation is : Acquiring a writing track displayed on the top layer that coincides with the display position of the touch point of the first touch operation as at least one writing track acted on by the first touch operation; The acquiring the writing track whose distance from the touch point of the first touch operation is within a preset radius is used as at least one writing track acted on by the first touch operation, specifically: Obtain the writing track displayed on the top layer whose distance to the touch point of the first touch operation is within a preset radius, as at least one writing track acted on by the first touch operation, or, Obtain the writing track whose distance from the touch point of the first touch operation is within a second setting range and the smallest distance from the first touch operation as the function of the first touch operation At least one writing track. The method according to claim 1, wherein the writing track of the writing track group is highlighted. The method according to claim 4, wherein the highlighting comprises at least one of adding a projection of the writing track and a floating display effect set for the writing track. The method of claim 1, wherein the receiving the second touch operation is: Receiving a second touch operation occurring within the circumscribed rectangle of the writing track group. The method according to claim 6, wherein the circumscribed rectangle is covered with a mask. The method according to claim 7, wherein at least one of the four sides and four corners of the mask is provided with adjustment controls, and the adjustment controls are used to adjust the coverage of the mask. 8. The method according to claim 8, wherein the circumscribed rectangle is correspondingly adjusted according to the adjustment of the coverage of the mask. The method according to claim 6, wherein the circumscribed rectangle adjusts at least one of the angle, position, and zoom ratio according to the adjustment of at least one of the angle, position, and zoom ratio of the writing track group. The method according to claim 6, wherein the circumscribed rectangle is regenerated according to the uppermost, lowermost, leftmost, and rightmost coordinates after the display adjustment process of the writing track group. The method according to claim 6 or 7, further comprising: Receiving a third touch operation outside the circumscribed rectangle; In response to the third touch operation, switch to the writing mode. The method according to claim 1, wherein the logical association relationship comprises at least one of the following: at least two writing trajectories are selected by drawing a closed figure, and at least two writing trajectories are in a preset shape At least two of the input writing trajectories are writing trajectories whose writing time and writing distance are close. The method according to claim 13, wherein when the logical association relationship is that at least two writing trajectories are writing trajectories whose writing time and writing distance are close, the writing trajectory group is stored in the same container, and the container passes Arrays, collections or dictionaries are maintained. The method according to claim 1, wherein the second touch operation includes a single-finger drag gesture, a two-finger pan gesture, a multi-finger zoom gesture, and a two-finger rotation gesture. A device for adjusting writing track, including: The first receiving unit is configured to receive a first touch operation, the first touch operation acting on at least one writing track; The first response unit is configured to, in response to the first touch operation, determine a writing trajectory group including at least two writing trajectories, the at least two writing trajectories including the writing trajectory acted on by the first touch operation , And at least one preset logical relationship exists with each other; The second receiving unit is configured to receive a second touch operation; The second response unit is configured to perform display adjustment on the writing track group in response to the second touch operation. A terminal device, including: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors realize the writing track adjustment method according to any one of claims 1-15. A computer-readable storage medium with a computer program stored thereon, and when the program is executed by a processor, the method for adjusting the writing track according to any one of claims 1-15 is realized.

Images