CN112506402A - Electronic whiteboard based graph control method and device and storage medium - Google Patents
Electronic whiteboard based graph control method and device and storage medium Download PDFInfo
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- CN112506402A CN112506402A CN202011343527.6A CN202011343527A CN112506402A CN 112506402 A CN112506402 A CN 112506402A CN 202011343527 A CN202011343527 A CN 202011343527A CN 112506402 A CN112506402 A CN 112506402A
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- 238000004590 computer program Methods 0.000 claims description 9
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- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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Abstract
The invention discloses a graph control method based on an electronic whiteboard, which is applied to the electronic whiteboard and comprises the following steps: identifying and judging the current user operation, and simultaneously acquiring a graph to be selected; if the current user operation is a single selection operation, creating a buffer and setting the capacity of the buffer to be 1; if the current user operation is a multi-selection operation, creating a buffer and setting the capacity of the buffer as the total number of the graphs to be selected, then filtering the graphs to be selected to obtain selected graphs and storing the selected graphs in the buffer; and highlighting the mark of the selected graph in the electronic whiteboard. The invention can distinguish a plurality of writing contents at the same position in the electronic whiteboard, is convenient for users and improves the user experience. The invention also discloses a graph control device and a storage medium based on the electronic whiteboard.
Description
Technical Field
The present invention relates to electronic whiteboard devices, and in particular, to a method, an apparatus, and a storage medium for controlling a graphic based on an electronic whiteboard.
Background
Due to the improvement of convenience and interactivity of the electronic whiteboard, the electronic whiteboard is increasingly popular with more people. People can perform operations such as demonstration, writing and the like on the electronic whiteboard through the whiteboard pen. Once writing is finished, the content written on the electronic whiteboard generally cannot be changed unless erased by an erasing tool; meanwhile, due to the particularity of writing on the electronic whiteboard, a certain position of the electronic whiteboard can be written for many times, namely, the content drawn firstly is below, and the content drawn secondly is above, so that superposition of a plurality of writing contents may occur at the same position, and when a user wants to select part of the writing contents, the user cannot distinguish the writing contents.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a method for controlling a graph based on an electronic whiteboard, which can solve the problems that writing contents of electronic whiteboards at the same position cannot be distinguished in the prior art.
The second purpose of the present invention is to provide a graphic control device based on an electronic whiteboard, which can solve the problem that the writing contents of the electronic whiteboard at the same position cannot be distinguished in the prior art.
The invention also aims to provide a storage medium which can solve the problems that the writing contents of the electronic whiteboard at the same position cannot be distinguished in the prior art.
One of the purposes of the invention is realized by adopting the following technical scheme:
the graphic control method based on the electronic whiteboard is applied to the electronic whiteboard, and comprises the following steps:
an acquisition step: identifying and judging the current user operation, and simultaneously acquiring a graph to be selected; if the current user operation is a single selection operation, executing a first establishing step; if the current user operation is a multi-selection operation, executing a second establishing step;
a first creation step: creating a buffer and setting the capacity of the buffer to be 1, and executing a filtering step;
a second creation step: creating a buffer and setting the capacity of the buffer as the total number of the graphs to be selected, and executing a filtering step;
and (3) filtering: filtering the graph to be selected to obtain a selected graph and storing the selected graph in a buffer;
a display step: and highlighting the mark of the selected graph in the electronic whiteboard.
Further, the graphic manipulation method further comprises: providing a configuration page for a user, and generating a filtering condition according to parameters input by the user;
the filtration step: and matching each graph to be selected with the filtering condition to obtain a selected graph.
Further, the graphic manipulation method comprises the following steps: setting a filtering preset button and/or a filtering reset button on the electronic whiteboard; when a user clicks a preset filtering button, providing a configuration page for the user and generating a filtering condition according to parameters input by the user; when the user clicks the filter reset button, the filter conditions stored in the system are cleared.
Further, the step of filtering further comprises the following steps after the selected graph is obtained: and when the capacity of the buffer is smaller than the total number of the selected graphs, storing the selected graphs with high priority in the buffer.
Further, the priority of the graph drawn later in the electronic whiteboard is higher than the priority of the graph drawn first.
Further, the graphic manipulation step further comprises: a drawing step: and taking out the selected graph from the buffer and copying the graph to the corresponding position of the electronic whiteboard.
Further, when the whiteboard pen clicks the electronic whiteboard, the current user operation is a single-selection operation; when the whiteboard pen slides on the electronic whiteboard, the current user operation is a multi-selection operation.
Further, when the whiteboard pen clicks the electronic whiteboard, the to-be-selected graph comprises all graphs at the touch position of the whiteboard pen;
when the user slides on the electronic whiteboard, the candidate patterns comprise all patterns of the whiteboard marker touch positions and/or all patterns in an area formed by the whiteboard marker touch positions.
The second purpose of the invention is realized by adopting the following technical scheme:
the graphic control device based on the electronic whiteboard comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the computer program is a graphic control program, and the processor executes the graphic control program to realize the steps of the graphic control method based on the electronic whiteboard adopted as one of the purposes of the invention.
The third purpose of the invention is realized by adopting the following technical scheme:
a storage medium, which is a computer-readable storage medium, having stored thereon a computer program, which is a graphics manipulation program, which when executed by a processor, implements the steps of an electronic whiteboard-based graphics manipulation method as employed in one of the objects of the present invention.
Compared with the prior art, the invention has the beneficial effects that:
according to the method, the filtering condition is set, and then the graph is filtered, so that the graph which a user wants to select is obtained through filtering and stored in the buffer, and subsequent management is facilitated; the invention can realize the storage management of part of the writing contents in the electronic whiteboard by means of the buffer, and can realize the distinguishing of the writing contents which the user wants to select in the electronic whiteboard by highlighting the mark in the electronic whiteboard, thereby facilitating the operation of the user.
Drawings
Fig. 1 is a flowchart of a method for controlling a graph based on an electronic whiteboard according to the present invention;
fig. 2 is a block diagram of an electronic whiteboard-based graphic manipulation apparatus provided in the present invention.
In the figure: 11. a memory; 12. a processor; 13. a communication bus; 14. a network interface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example one
The invention provides a preferred embodiment, and a graphic control method based on an electronic whiteboard, as shown in fig. 1, includes the following steps:
step S1, recognizing and judging the current user operation, and simultaneously acquiring the graph to be selected; if the current user operation is the single selection operation, executing step S2; if the current user operation is the multi-selection operation, step S3 is executed.
Preferably, the present invention defines: the user operation includes a single selection operation and a multiple selection operation.
In addition, the graph in this embodiment corresponds to a combination of specific writing contents on the electronic whiteboard, for example, the graph may be a five-pointed star, a stroke, a character, and the like, and how to define the specific writing contents can be set according to actual requirements, which are contents formed after the whiteboard pen writes. The graphics in this embodiment are derived from one and the same basic graphic, i.e., drawing. When the user operation is the single selection operation, only one figure is needed by the user. When the user operation is a multi-selection operation, a plurality of graphs are needed by the user.
Preferably, the present embodiment further sets: the single-selection operation refers to an operation of clicking the electronic whiteboard by the whiteboard pen.
The multi-selection operation refers to an operation in which the whiteboard pen slides on the electronic whiteboard.
Due to the nature of electronic whiteboard writing, there may be multiple graphics at the same location on the electronic whiteboard. Thus, when a whiteboard pen touches a location on an electronic whiteboard, multiple graphics may be involved.
Therefore, no matter what operation the current user operates, there may be one or more graphs to be selected. Specifically, when the current user operation is single-selection operation, the whiteboard pen clicks the electronic whiteboard, and the to-be-selected graphs include one or more graphs at the touch position of the whiteboard pen. When the current user operation is a multi-selection operation, the whiteboard pen slides on the electronic whiteboard, and the to-be-selected graphs comprise one or more of all graphs of the touch positions of the whiteboard pen and/or all graphs in an area formed by the touch positions of the whiteboard pen. When the whiteboard pen slides on the electronic whiteboard, the touch position of the whiteboard pen can form direct selection, a curve and the like; the area formed by the touch position of the whiteboard pen can also be a square, circle or other irregular closed area.
Step S2, create buffer and set the buffer capacity to 1, execute step S4.
When the user operation is the single selection operation, the capacity of the buffer is set to 1, and other unnecessary graphics are prevented from being stored in the buffer.
Step S3, create buffer and set the capacity of the buffer to the total number of graphics to be selected, execute step S4.
And when the user operation is the multi-selection operation, taking the total number of the graphs to be selected as the capacity of the buffer.
And step S4, filtering the graph to be selected to obtain the selected graph.
And step S5, storing the selected graph in a buffer.
Because there may be a plurality of graphs to be selected, each graph to be selected needs to be filtered to obtain a selected graph, and the selected graph is stored in the buffer, so that the graphs in the buffer can be viewed and managed later.
And step S6, highlighting the mark of the selected graph in the electronic whiteboard. The mark is highlighted so that the user can view the graph required by the user on the electronic whiteboard. Therefore, the graph required by the user and other graphs on the electronic whiteboard can be obviously distinguished, and the problem that the user cannot distinguish because a plurality of graph contents exist at the same position of the electronic whiteboard in the prior art is solved; meanwhile, the graph required by the user is stored in the buffer, and the subsequent user can directly obtain the graph through the buffer, such as checking, copying and other operations.
Preferably, this embodiment further includes:
and step S7, drawing the graph in the buffer to the corresponding position of the electronic whiteboard.
When the selected graph in the buffer is drawn to other positions of the electronic whiteboard, the selected graph is directly taken out of the buffer without redrawing, so that the drawing efficiency and convenience of a user are greatly improved, and the memory is saved. For example, when a user wants to move the content written by the whiteboard pen from the position a to the position B, the writing content at the position a may be stored in the buffer according to the above operation, and then the writing content is taken out from the buffer and copied to the position B.
Preferably, since the number of the selected graphs may not be consistent with the number of the graphs to be selected, in order to obtain the selected graphs, filtering is performed on each graph to be selected by setting filtering conditions.
Wherein the filtering condition is preset by a user.
Preferably, this embodiment further includes: the filter condition is generated by providing a filter condition setting page to the user and receiving a parameter input by the user.
Specifically, before the user selects the graphics, the user may be provided with a corresponding page to input the corresponding filtering parameters, and then the filtering condition is generated according to the filtering parameters.
Preferably, in order to facilitate the user operation, a filtering preset button is arranged on the electronic whiteboard. When the user clicks the filtering preset button, a filtering condition setting page is provided for the user, and the parameters input by the user are received to generate filtering conditions.
Preferably, the filter reset button is provided on the electronic whiteboard. When the user clicks the filter reset button, the filter conditions stored in the system are cleared. In this way, the user can reset the filtering condition.
Step S4 further includes matching each candidate pattern with the filter condition to obtain the selected pattern.
Preferably, when there are a plurality of selected graphs obtained from the filtering result, that is, the total number of selected graphs is greater than the capacity of the buffer, the corresponding selected graph is obtained from the selected graphs according to the priority of the selected graphs and stored in the buffer.
Generally, when writing on an electronic whiteboard, the contents written first are on the lower layer, and the contents written later are on the upper layer. Therefore, when there are a plurality of selected graphics at the same position, the graphics with high priority are taken as the final selected graphics. Preferably, the present embodiment sets: the content written later is prioritized over the content written first. Therefore, when the capacity of the buffer is smaller than the total number of the selected graphics, the graphics to be drawn later are stored in the buffer.
The step is particularly suitable for storing the selected graph with high priority into the buffer because the graph to be selected has a plurality of graphs and the selected graph filtered by the filtering condition may also have a plurality of graphs and the capacity of the buffer is 1 when the user operation is single-selection operation.
Example two
The invention provides a graph control device based on an electronic whiteboard. As shown in fig. 2, an internal structural diagram of the electronic whiteboard-based graphic manipulation apparatus according to an embodiment of the present invention is shown.
In this embodiment, the electronic whiteboard-based graphic control device may be a PC (Personal Computer), or may be a terminal device such as a smart phone, a tablet Computer, or a portable Computer. The figure control device based on the electronic whiteboard at least comprises: a processor 12, a communication bus 13, a network interface 14, and a memory 11.
The memory 11 includes at least one type of readable storage medium, which includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The memory 11 may in some embodiments be an internal storage unit of the electronic whiteboard based graphics manipulation apparatus, for example a hard disk of the electronic whiteboard based graphics manipulation apparatus. The memory 11 may also be an external storage device of the electronic whiteboard-based graphics control apparatus in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the electronic whiteboard-based graphics control apparatus. Further, the memory 11 may also include both an internal storage unit and an external storage device of the electronic whiteboard-based graphic manipulation apparatus. The memory 11 may be used not only to store application software installed in the electronic whiteboard-based graphic manipulation apparatus and various types of data, such as codes of an IP graphic manipulation program, etc., but also to temporarily store data that has been output or is to be output.
The processor 12 may be a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data Processing chip in some embodiments, and is used for executing program codes stored in the memory 11 or Processing data, such as executing a graphics control program.
The communication bus 13 is used to realize connection communication between these components.
The network interface 14 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), and is typically used to establish a communication link between the electronic whiteboard-based graphics manipulation apparatus and other electronic devices.
Optionally, the electronic whiteboard based graphic manipulation apparatus may further include a user interface, the user interface may include a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface may further include a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, or the like. The display, which may also be referred to as a display screen or display unit, is suitable for displaying information processed in the electronic whiteboard-based graphical manipulation apparatus and for displaying a visualized user interface.
While fig. 2 shows only an electronic whiteboard based graphics manipulation apparatus having components 11-14 and a graphics manipulation program, those skilled in the art will appreciate that the configuration shown in fig. 2 does not constitute a limitation of an electronic whiteboard based graphics manipulation apparatus, and may include fewer or more components than shown, or some components in combination, or a different arrangement of components.
In the embodiment of the electronic whiteboard-based graphics manipulation apparatus shown in fig. 2, a graphics manipulation program is stored in the memory 11; the processor 12 implements the following steps when executing the graphics manipulation program stored in the memory 11:
an acquisition step: identifying and judging the current user operation, and simultaneously acquiring a graph to be selected; if the current user operation is a single selection operation, executing a first establishing step; if the current user operation is a multi-selection operation, executing a second establishing step;
a first creation step: creating a buffer and setting the capacity of the buffer to be 1, and executing a filtering step;
a second creation step: creating a buffer and setting the capacity of the buffer as the total number of the graphs to be selected, and executing a filtering step;
and (3) filtering: filtering the graph to be selected to obtain a selected graph and storing the selected graph in a buffer;
a display step: and highlighting the mark of the selected graph in the electronic whiteboard.
Further, the graphic manipulation method further comprises: providing a configuration page for a user, and generating a filtering condition according to parameters input by the user;
the filtration step: and matching each graph to be selected with the filtering condition to obtain a selected graph.
Further, the graphic manipulation method comprises the following steps: setting a filtering preset button and/or a filtering reset button on the electronic whiteboard; when a user clicks a preset filtering button, providing a configuration page for the user and generating a filtering condition according to parameters input by the user; when the user clicks the filter reset button, the filter conditions stored in the system are cleared.
Further, the step of filtering further comprises the following steps after the selected graph is obtained: and when the capacity of the buffer is smaller than the total number of the selected graphs, storing the selected graphs with high priority in the buffer.
Further, the priority of the graph drawn later in the electronic whiteboard is higher than the priority of the graph drawn first.
Further, the graphic manipulation step further comprises: a drawing step: and taking out the selected graph from the buffer and copying the graph to the corresponding position of the electronic whiteboard.
Further, when the whiteboard pen clicks the electronic whiteboard, the current user operation is a single-selection operation; when the whiteboard pen slides on the electronic whiteboard, the current user operation is a multi-selection operation.
Further, when the whiteboard pen clicks the electronic whiteboard, the to-be-selected graph comprises all graphs at the touch position of the whiteboard pen;
when the user slides on the electronic whiteboard, the candidate patterns comprise all patterns of the whiteboard marker touch positions and/or all patterns in an area formed by the whiteboard marker touch positions.
EXAMPLE III
The invention also provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, wherein the computer program is a graph control program; the graphics manipulation program when executed by the processor implements the steps of:
an acquisition step: identifying and judging the current user operation, and simultaneously acquiring a graph to be selected; if the current user operation is a single selection operation, executing a first establishing step; if the current user operation is a multi-selection operation, executing a second establishing step;
a first creation step: creating a buffer and setting the capacity of the buffer to be 1, and executing a filtering step;
a second creation step: creating a buffer and setting the capacity of the buffer as the total number of the graphs to be selected, and executing a filtering step;
and (3) filtering: filtering the graph to be selected to obtain a selected graph and storing the selected graph in a buffer;
a display step: and highlighting the mark of the selected graph in the electronic whiteboard.
Further, the graphic manipulation method further comprises: providing a configuration page for a user, and generating a filtering condition according to parameters input by the user;
the filtration step: and matching each graph to be selected with the filtering condition to obtain a selected graph.
Further, the graphic manipulation method comprises the following steps: setting a filtering preset button and/or a filtering reset button on the electronic whiteboard; when a user clicks a preset filtering button, providing a configuration page for the user and generating a filtering condition according to parameters input by the user; when the user clicks the filter reset button, the filter conditions stored in the system are cleared.
Further, the step of filtering further comprises the following steps after the selected graph is obtained: and when the capacity of the buffer is smaller than the total number of the selected graphs, storing the selected graphs with high priority in the buffer.
Further, the priority of the graph drawn later in the electronic whiteboard is higher than the priority of the graph drawn first.
Further, the graphic manipulation step further comprises: a drawing step: and taking out the selected graph from the buffer and copying the graph to the corresponding position of the electronic whiteboard.
Further, when the whiteboard pen clicks the electronic whiteboard, the current user operation is a single-selection operation; when the whiteboard pen slides on the electronic whiteboard, the current user operation is a multi-selection operation.
Further, when the whiteboard pen clicks the electronic whiteboard, the to-be-selected graph comprises all graphs at the touch position of the whiteboard pen;
when the user slides on the electronic whiteboard, the candidate patterns comprise all patterns of the whiteboard marker touch positions and/or all patterns in an area formed by the whiteboard marker touch positions.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The graphic control method based on the electronic whiteboard is applied to the electronic whiteboard, and is characterized by comprising the following steps:
an acquisition step: identifying and judging the current user operation, and simultaneously acquiring a graph to be selected; if the current user operation is a single selection operation, executing a first establishing step; if the current user operation is a multi-selection operation, executing a second establishing step;
a first creation step: creating a buffer and setting the capacity of the buffer to be 1, and executing a filtering step;
a second creation step: creating a buffer and setting the capacity of the buffer as the total number of the graphs to be selected, and executing a filtering step;
and (3) filtering: filtering the graph to be selected to obtain a selected graph and storing the selected graph in a buffer;
a display step: and highlighting the mark of the selected graph in the electronic whiteboard.
2. The electronic whiteboard-based graphic manipulation method according to claim 1, further comprising: providing a configuration page for a user, and generating a filtering condition according to parameters input by the user;
the filtration step: and matching each graph to be selected with the filtering condition to obtain a selected graph.
3. The electronic whiteboard-based graphic manipulation method according to claim 2, wherein the graphic manipulation method comprises: setting a filtering preset button and/or a filtering reset button on the electronic whiteboard; when a user clicks a preset filtering button, providing a configuration page for the user and generating a filtering condition according to parameters input by the user; when the user clicks the filter reset button, the filter conditions stored in the system are cleared.
4. The method for manipulating an image based on an electronic whiteboard according to claim 1, wherein the step of filtering further comprises the following steps after obtaining the selected image: and when the capacity of the buffer is smaller than the total number of the selected graphs, storing the selected graphs with high priority in the buffer.
5. The electronic whiteboard-based graph manipulation method according to claim 4, wherein the priority of the graph drawn later in the electronic whiteboard is higher than the priority of the graph drawn earlier.
6. The electronic whiteboard-based graphic manipulation method according to claim 1, wherein the graphic manipulation step further comprises: a drawing step: and taking out the selected graph from the buffer and copying the graph to the corresponding position of the electronic whiteboard.
7. The electronic whiteboard-based graph control method according to claim 1, wherein when a whiteboard pen clicks the electronic whiteboard, the current user operation is a single-selection operation; when the whiteboard pen slides on the electronic whiteboard, the current user operation is a multi-selection operation.
8. The electronic whiteboard-based graph control method according to claim 7, wherein when the whiteboard pen clicks the electronic whiteboard, the graphs to be selected comprise all graphs of the touch positions of the whiteboard pen;
when the user slides on the electronic whiteboard, the candidate patterns comprise all patterns of the whiteboard marker touch positions and/or all patterns in an area formed by the whiteboard marker touch positions.
9. The figure control device based on the electronic whiteboard comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the computer program is a figure control program, and the figure control device is characterized in that: the steps of the electronic whiteboard based graphics manipulation method as claimed in any one of claims 1-8 are realized when the processor executes the graphics manipulation program.
10. A storage medium which is a computer-readable storage medium having a computer program stored thereon, the computer program being a graphics manipulation program, characterized in that: the graphics manipulation program when executed by a processor implements the steps of the electronic whiteboard-based graphics manipulation method as claimed in any of claims 1 to 8.
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| CN108803991A (en) * | 2018-06-12 | 2018-11-13 | 广州视源电子科技股份有限公司 | Object screening method and device, computer readable storage medium and electronic terminal |
| CN111784800A (en) * | 2019-04-03 | 2020-10-16 | 珠海金山办公软件有限公司 | Method and device for selecting graphic object, electronic equipment and storage medium |
| CN110045909A (en) * | 2019-04-15 | 2019-07-23 | 广州视源电子科技股份有限公司 | Ellipse processing method, device and equipment based on writing track and storage medium |
| CN110297558A (en) * | 2019-06-11 | 2019-10-01 | 广州视源电子科技股份有限公司 | Multi-point touch control method and device, intelligent interactive panel and storage medium |
| CN110727386A (en) * | 2019-09-12 | 2020-01-24 | 湖南新云网科技有限公司 | Method, system and storage medium for operating graphic elements of electronic whiteboard |
| CN110737372A (en) * | 2019-09-12 | 2020-01-31 | 湖南新云网科技有限公司 | newly-added primitive operation method and system for electronic whiteboard and electronic whiteboard |
| CN111459369A (en) * | 2020-04-13 | 2020-07-28 | 深圳康佳电子科技有限公司 | Interface element screening method, intelligent terminal and storage medium |
| CN111552429A (en) * | 2020-04-29 | 2020-08-18 | 杭州海康威视数字技术股份有限公司 | Graph selection method and device and electronic equipment |
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