CN112463009A - Control method, device and system of electronic whiteboard and computer-readable storage medium - Google Patents
Control method, device and system of electronic whiteboard and computer-readable storage medium Download PDFInfo
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- CN112463009A CN112463009A CN201910849767.4A CN201910849767A CN112463009A CN 112463009 A CN112463009 A CN 112463009A CN 201910849767 A CN201910849767 A CN 201910849767A CN 112463009 A CN112463009 A CN 112463009A
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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
- G06F3/04883—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 for inputting data by handwriting, e.g. gesture or text
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- User Interface Of Digital Computer (AREA)
Abstract
The embodiment of the invention relates to a method, a device and a system for controlling an electronic whiteboard and a computer-readable storage medium. The control method includes, for example: responding to the triggering operation of a user to create an electronic whiteboard page; acquiring a position coordinate value of initial handwriting of a user on the electronic whiteboard page relative to a reference point based on the initial coordinate value of the reference point of the electronic whiteboard page to obtain a relative position coordinate; responding to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate; and responding to a preset trigger operation of a user, and executing a page returning operation on the electronic whiteboard page according to the updated relative position coordinate. The writing content of the embodiment of the invention is more efficient and accurate when being positioned to the initial handwriting, and the user operation experience is better.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and an apparatus for controlling an electronic whiteboard, a system for controlling an electronic whiteboard, and a computer-readable storage medium.
Background
In a conference screen system, an electronic whiteboard function is a core requirement which must be realized, a user needs to write and speak contents on the electronic whiteboard in real time and present the contents to participants, and often the size of the electronic whiteboard page is almost infinite, after the user writes and slides to switch writing positions for many times, because the writing contents are many, if the user wants to return to an initial writing point (or called an original point), the user needs to continuously slide a screen for many times to return along the original path, and the screen slides until the writing content starts to stop sliding so as to return to the original point; as such, the following disadvantages exist: (a) manual sliding back to the origin is inefficient and user experience is poor; and (b) when the sliding speed is high, the writing range can be easily crossed, and the original point can be positioned only by sliding again.
Disclosure of Invention
To overcome the defects and shortcomings in the prior art, embodiments of the present invention provide a method for controlling an electronic whiteboard, a device for controlling an electronic whiteboard, a system for controlling an electronic whiteboard, and a computer-readable storage medium.
On one hand, the method for controlling the electronic whiteboard provided by the embodiment of the invention comprises the following steps: responding to the triggering operation of a user to create an electronic whiteboard page; based on the initial coordinate value of the reference point of the electronic whiteboard page, acquiring a position coordinate value of the initial handwriting of the user on the electronic whiteboard page relative to the reference point to obtain a relative position coordinate; in response to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate; and responding to a preset trigger operation of a user, and executing a page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
The control method of the electronic whiteboard of the embodiment calculates the relative position coordinates of the initial handwriting when the electronic whiteboard page is expanded, and then performs the quick return operation of the electronic whiteboard page based on the calculated relative position coordinates through the preset triggering operation of the user so as to display the initial handwriting in the user visual window for the user to check; the writing content is more efficient and accurate when being positioned to the initial handwriting, and the user operation experience is better.
In one embodiment of the invention, the reference point is located at the top left corner vertex of the electronic whiteboard page.
In one embodiment of the present invention, in response to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording an expansion direction of the electronic whiteboard page, and calculating a position coordinate value of the starting handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate, includes: responding to downward or upward size expansion of the electronic whiteboard page caused by multi-point sliding touch operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate.
In an embodiment of the present invention, the executing, according to the updated relative position coordinate, a page returning operation on the electronic whiteboard page in response to a user preset trigger operation includes: and responding to the user clicking a preset control or a preset touch gesture of the user, and executing page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
On the other hand, an electronic whiteboard control apparatus provided in an embodiment of the present invention includes: the page creating module is used for responding to the triggering operation of the user to create an electronic whiteboard page; the coordinate acquisition module is used for acquiring a position coordinate value of the initial handwriting of the user on the electronic whiteboard page relative to the reference point based on the initial coordinate value of the reference point of the electronic whiteboard page so as to obtain a relative position coordinate; the coordinate updating module is used for responding to the size expansion of the electronic whiteboard page caused by the sliding operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate; and the page returning module is used for responding to the preset triggering operation of the user and executing the page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
The coordinate obtaining module in the control device of the electronic whiteboard of this embodiment may obtain the relative position coordinates of the initial handwriting, the coordinate updating module may calculate the relative position coordinates of the initial handwriting in real time when the electronic whiteboard page is expanded, and then the page returning module may perform a fast returning operation of the electronic whiteboard page according to the calculated relative position coordinates based on a user preset triggering operation, so as to display the initial handwriting in the user visible window for the user to view; the writing content is more efficient and accurate when being positioned to the initial handwriting, and the user operation experience is better.
In one embodiment of the invention, the reference point is located at the top left corner vertex of the electronic whiteboard page.
In an embodiment of the present invention, the coordinate updating module is specifically configured to: responding to downward or upward size expansion of the electronic whiteboard page caused by multi-point sliding touch operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate.
In an embodiment of the present invention, the page returning module is specifically configured to: and responding to the user clicking a preset control or a preset touch gesture of the user, and executing page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
In another aspect, a control system for an electronic whiteboard provided in an embodiment of the present invention includes: a processor and a memory, wherein the memory stores instructions executed by the processor, and the instructions cause the processor to execute operations to perform any one of the aforementioned methods for controlling an electronic whiteboard.
In another aspect, an embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile memory and stores program codes, where the program codes are executed by one or more processors to implement any one of the foregoing methods for controlling an electronic whiteboard.
In summary, the above technical solutions of the embodiments of the present invention have the following beneficial effects: the method, the device and the system for controlling the electronic whiteboard and the computer-readable storage medium can achieve the purpose of quickly returning to the initial handwriting position after the page of the electronic whiteboard roams, and the writing content is positioned to the initial handwriting more efficiently and accurately, so that the user operation experience is better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for controlling an electronic whiteboard according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a status of a process of downward expansion and page return of an electronic whiteboard according to an embodiment of the present invention.
Fig. 3 is a schematic block diagram of a control device of an electronic whiteboard according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a control system of an electronic whiteboard according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for controlling an electronic whiteboard according to an embodiment of the present invention includes, for example, the steps of:
s11: responding to the triggering operation of a user to create an electronic whiteboard page;
s13: based on the initial coordinate value of the reference point of the electronic whiteboard page, acquiring a position coordinate value of the initial handwriting of the user on the electronic whiteboard page relative to the reference point to obtain a relative position coordinate;
s15: in response to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate;
s17: and responding to a preset trigger operation of a user, and executing a page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
In order to more clearly understand the control method of the electronic whiteboard of the present embodiment, the following description will be made with reference to fig. 2.
Specifically, the control method of the electronic whiteboard of this embodiment may be applied to a display device with a touch function in a conference screen system, or applied to a podium with a touch function, and the podium may share screen content to the display device, such as an LED display screen, in a wireless or wired manner.
As mentioned above, the control method of the electronic whiteboard of the embodiment can solve the problems of low operation efficiency and poor user experience when the current manual sliding returns to the original point, and simultaneously improve the accuracy of positioning and improve the conference efficiency and the product user experience, for example, it is a positioning solution for quickly returning to the initial handwriting position after the electronic whiteboard page is in writing roaming: recording the relative position coordinates of the initial handwriting, calculating the latest relative position coordinates in real time according to the page expansion change of the electronic whiteboard in the writing process, and directly positioning to the initial handwriting position through the relative position coordinate calculation result when the initial handwriting position needs to be returned, so as to realize quick initial handwriting positioning; the specific implementation scheme is as follows:
first, in response to the user touching or clicking an electronic whiteboard application in the device to start an electronic whiteboard function to create an electronic whiteboard page, or in response to the user clicking a control of an additional electronic whiteboard page to create a new electronic whiteboard page, the user performs a writing operation on the created electronic whiteboard page (corresponding to step S11).
When a user starts to write on the electronic whiteboard page, for example, taking a vertex at the top left corner of the electronic whiteboard page (i.e. a position point at the vertex at the top left corner of the user visual window on the electronic whiteboard page) as a reference point RP, where an initial coordinate value of the reference point RP is (0,0), recording a position coordinate value of a starting handwriting, for example, a starting writing point SP (i.e. a first writing point) relative to the reference point RP, to obtain a relative position coordinate value (-5, -25) (corresponding to step S13); it should be noted here that the reference point RP of the present embodiment is not limited to the top left corner vertex, but may be other corner vertices such as the bottom right corner vertex; the initial handwriting is not limited to the initial writing point SP, but may be a geometric center point of the initial character "present" in fig. 2, a position point of the initial character "present" closest to the reference point RP, or even an arbitrary position point of the initial character "present".
Then, when the size of the electronic whiteboard page changes, for example, expands downward, each time the user slides, for example, by a multi-point sliding touch, the expansion direction of the electronic whiteboard page is recorded, and the position coordinate value of the initial handwriting, for example, the initial writing point SP, with respect to the current coordinate value of the reference point RP, for example, (-150,0) is calculated in real time to update the relative position coordinate (-5, -25), so as to obtain a new relative position coordinate, for example, [ -5- (-150), -25-0] ═ 145, -25) (corresponding to step S15). It should be noted here that the expansion direction of the electronic whiteboard page is not limited to the downward expansion illustrated in fig. 2, and may also be an upward expansion triggered by a downward multi-point sliding touch gesture, or other directional expansions such as a leftward expansion, a rightward expansion, and the like.
When the [ one-click-back-to-origin ] control is clicked or the touch gesture predefined by the software is executed, a page return operation is executed on the electronic whiteboard page according to the calculated relative position coordinates of the initial handwriting, such as the initial writing point SP (corresponding to step S17), so that the initial handwriting, such as the initial writing point SP, is displayed in the user visible window, for example, as shown in fig. 2, the initial handwriting, such as the initial writing point SP, is positioned at the top left corner of the user visible window of the associated electronic whiteboard page, or the coordinate value of the reference point RP returned by the electronic whiteboard page is restored to the state of the initial coordinate value (0, 0).
Therefore, the purpose of quickly returning to the initial handwriting position after the electronic whiteboard page is subjected to writing roaming is achieved, the writing content is positioned to the initial handwriting more efficiently and accurately, and the user operation experience is better.
Referring to fig. 3, a control device 30 of an electronic whiteboard according to an embodiment of the present invention includes: a page creation module 31, a coordinate acquisition module 33, a coordinate update module 35, and a page return module 37.
The page creating module 31 is configured to create an electronic whiteboard page in response to a user trigger operation; the coordinate acquisition module 33 is configured to acquire, based on an initial coordinate value of a reference point of the electronic whiteboard page, a position coordinate value of an initial handwriting of the user on the electronic whiteboard page relative to the reference point, so as to obtain a relative position coordinate; the coordinate updating module 35 is configured to respond to a size expansion of the electronic whiteboard page caused by a sliding operation of a user, record an expansion direction of the electronic whiteboard page, and calculate a position coordinate value of the starting handwriting relative to the reference point based on a current coordinate value of the reference point to update the relative position coordinate; and the page returning module 37 is configured to respond to a user preset trigger operation, and execute a page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
For the specific functional details of the page creating module 31, the coordinate obtaining module 33, the coordinate updating module 35, and the page returning module 37, reference may be made to the related description of the control method of the electronic whiteboard in the foregoing embodiments, and no further description is given here. Further, it is worth mentioning that the page creating module 31, the coordinate obtaining module 33, the coordinate updating module 35 and the page returning module 37 may be software modules, stored in a nonvolatile memory and executed by a processor to perform the relevant operations to perform the control method of the electronic whiteboard in the foregoing embodiment.
Referring to fig. 4, a control system 40 of an electronic whiteboard according to an embodiment of the present invention includes: a processor 41 and a memory 43; the memory 43 stores instructions executed by the processor 41, and the instructions cause the processor 41 to execute operations to perform the control method of the electronic whiteboard described in the foregoing embodiment, for example.
In addition, referring to fig. 5, an embodiment of the present invention provides a computer-readable storage medium 50, which is a non-volatile memory and stores program codes, and when the program codes are executed by one or more processors, for example, the one or more processors are caused to execute the control method of the electronic whiteboard according to the foregoing embodiment.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method of an electronic whiteboard is characterized by comprising the following steps:
responding to the triggering operation of a user to create an electronic whiteboard page;
based on the initial coordinate value of the reference point of the electronic whiteboard page, acquiring a position coordinate value of the initial handwriting of the user on the electronic whiteboard page relative to the reference point to obtain a relative position coordinate;
in response to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate; and
and responding to a preset trigger operation of a user, and executing a page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
2. The method of controlling an electronic whiteboard of claim 1, wherein the reference point is located at a top left corner vertex of the electronic whiteboard page.
3. The method for controlling an electronic whiteboard of claim 1, wherein the responding to the size expansion of the electronic whiteboard page caused by the sliding operation of the user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the starting handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate comprises:
responding to downward or upward size expansion of the electronic whiteboard page caused by multi-point sliding touch operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate.
4. The method for controlling an electronic whiteboard of claim 1, wherein the performing, in response to a user preset trigger operation, a page return operation on the electronic whiteboard page according to the updated relative position coordinates comprises:
and responding to the user clicking a preset control or a preset touch gesture of the user, and executing page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
5. A control apparatus for an electronic whiteboard, comprising:
the page creating module is used for responding to the triggering operation of the user to create an electronic whiteboard page;
the coordinate acquisition module is used for acquiring a position coordinate value of the initial handwriting of the user on the electronic whiteboard page relative to the reference point based on the initial coordinate value of the reference point of the electronic whiteboard page so as to obtain a relative position coordinate;
the coordinate updating module is used for responding to the size expansion of the electronic whiteboard page caused by the sliding operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate; and
and the page returning module is used for responding to the preset triggering operation of the user and executing the page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
6. The electronic whiteboard control apparatus of claim 5, wherein the reference point is located at an upper left vertex of the electronic whiteboard page.
7. The control apparatus of an electronic whiteboard of claim 5, wherein the coordinate updating module is specifically configured to:
responding to downward or upward size expansion of the electronic whiteboard page caused by multi-point sliding touch operation of a user, recording the expansion direction of the electronic whiteboard page, and calculating the position coordinate value of the initial handwriting relative to the reference point based on the current coordinate value of the reference point to update the relative position coordinate.
8. The control device of an electronic whiteboard of claim 5, wherein the page returning module is specifically configured to:
and responding to the user clicking a preset control or a preset touch gesture of the user, and executing page returning operation on the electronic whiteboard page according to the updated relative position coordinate.
9. A control system for an electronic whiteboard, comprising: a processor and a memory, wherein the memory stores instructions for execution by the processor, and the instructions cause the processor to perform operations to perform the method of controlling an electronic whiteboard of any of claims 1 to 4.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is a non-volatile memory and stores program code, which is executed by one or more processors to implement the control method of an electronic whiteboard according to any one of claims 1 to 4.
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