CN114764294B - Page element operation method, device and equipment of electronic whiteboard - Google Patents

Abstract

The embodiment of the application discloses a page element operation method, device and equipment of an electronic whiteboard, and belongs to the field of intelligent equipment interaction. The method comprises the following steps: and after receiving an opening instruction input by a user, the intelligent interaction panel opens a roaming mode and creates an initial roaming picture. After receiving a first roaming instruction input by a user, the intelligent interaction panel responds to the first roaming instruction to roam the initial roaming picture, and generates and displays a first target picture according to the initial roaming picture after roaming and the size of the display screen. By adopting the scheme, the intelligent interaction panel establishes the initial roaming picture after detecting the opening instruction, and does not need to establish the initial roaming picture until the user inputs the first roaming instruction, so that even if a plurality of elements exist on the canvas, the intelligent interaction panel can have enough time to generate the initial roaming picture, and the purposes of reducing time consumption, reducing blocking and improving element drawing efficiency while reducing memory consumption in the roaming process are achieved in a pre-update mode.

Description

Page element operation method, device and equipment of electronic whiteboard

Technical Field

The embodiment of the application relates to the field of intelligent equipment interaction, in particular to a page element operation method, device and equipment of an electronic whiteboard.

Background

With the progress of technology and the continuous development of the internet industry, electronic whiteboards have been widely used in the fields of education and teaching, enterprise conferences, commercial display and the like. By utilizing the electronic whiteboard, the communication environment can be effectively improved, and the group communication efficiency can be improved.

The roaming function is one of the main functions of the electronic whiteboard. When the roaming function is on, the canvas of the electronic whiteboard can be infinitely scaled and moved. When the roaming function is off, the canvas of the electronic whiteboard cannot be moved and scaled. In a common roaming mode, all elements on a canvas are drawn on one picture, and when roaming, only the content of the overlapping area of the picture and the display screen is drawn on one picture with the same size as the display screen, and the pictures with the same size are rendered and displayed.

However, the size of the display screen of the electronic whiteboard is fixed. In the above roaming method, the larger the roaming range is, the larger the picture for drawing all elements on the canvas is, resulting in the larger the consumed memory.

Disclosure of Invention

The embodiment of the application provides a page element operation method, device and equipment of an electronic whiteboard, which achieve the purposes of reducing time consumption, reducing blocking and improving element drawing efficiency while reducing memory consumption in a roaming process in a pre-update mode. The technical scheme is as follows:

In a first aspect, an embodiment of the present application provides a method for operating a page element of an electronic whiteboard, including: displaying a mode selection interface;

Receiving an opening instruction for opening a roaming mode on the mode selection interface, creating an initial roaming picture with the same size as the electronic whiteboard, and displaying a roaming mode interface, wherein the initial roaming picture comprises elements on a canvas of the electronic whiteboard;

receiving a first roaming instruction for requesting roaming of the initial roaming picture on the roaming mode interface;

executing the first roaming instruction to roam the initial roaming picture, and displaying a first target picture, wherein the first target picture is determined according to the roamed initial roaming picture and the size of the electronic whiteboard.

Optionally, the creating an initial roaming picture equal to the electronic whiteboard in size includes: creating a first blank picture, wherein the first blank picture has the same size as a display screen of the electronic equipment; scaling elements on the canvas according to the size of the electronic whiteboard; and drawing the zoomed element on the first blank picture to obtain the initial roaming picture.

Optionally, the method further comprises: and generating a first roaming picture according to the initial roaming picture after roaming, wherein the first roaming picture is used for next roaming.

Optionally, the generating a first roaming picture according to the initial roaming picture after roaming includes: detecting that the user finishes the first roaming instruction, and creating a second blank picture with the same size as the electronic whiteboard; scaling the initial roaming picture after roaming according to the size of the electronic whiteboard to obtain a scaled picture; and redrawing the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

Optionally, after the displaying the first target picture, the method further includes: receiving a second roaming instruction for requesting roaming of the first roaming picture; executing the second roaming instruction, and judging whether element drawing is completed on the second blank picture or not; when element drawing is completed on the second blank picture, roaming the first roaming picture, and obtaining a second target picture according to the first roaming picture after roaming and the size of the display screen; and displaying the second target picture.

Optionally, the method further comprises: and when element drawing is completed on the second blank picture, the initial roaming picture is emptied, so that the first blank picture is obtained.

Optionally, the executing the second roaming instruction, after determining whether to complete element drawing on the second blank picture, further includes: and roaming the initial roaming picture when element drawing is not completed on the second blank picture.

In a second aspect, an embodiment of the present application provides a page element operation device of an electronic whiteboard, including:

The display module is used for displaying a mode selection interface;

The receiving module is used for receiving an opening instruction for opening the roaming mode on the mode selection interface;

The processing module is used for creating an initial roaming picture with the same size as the electronic whiteboard, wherein the initial roaming picture comprises elements on a canvas of the electronic whiteboard;

The display module is also used for displaying a roaming mode interface;

The receiving module is further configured to receive a first roaming instruction on the roaming mode interface, where the first roaming instruction is used to request roaming of the initial roaming picture;

the processing module is further configured to execute the first roaming instruction to roam the initial roaming picture, and determine a first target picture according to the roamed initial roaming picture and the size of the electronic whiteboard;

The display module is further configured to display the first target picture.

Optionally, when the processing module creates an initial roaming picture with a size equal to that of the electronic whiteboard, the processing module is configured to create a first blank picture, where the first blank picture is equal to that of a display screen of the electronic device; scaling elements on the canvas according to the size of the electronic whiteboard; and drawing the zoomed element on the first blank picture to obtain the initial roaming picture.

Optionally, the processing module is further configured to generate a first roaming picture according to the initial roaming picture after roaming, where the first roaming picture is used for next roaming.

Optionally, the processing module is configured to detect that the user ends the first roaming instruction, and create a second blank picture with a size equal to that of the electronic whiteboard; scaling the initial roaming picture after roaming according to the size of the electronic whiteboard to obtain a scaled picture; and redrawing the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

Optionally, the receiving module is further configured to receive a second roaming instruction for requesting roaming of the first roaming picture after the display module displays the first target picture;

The processing module is further configured to execute the second roaming instruction, and determine whether element drawing is completed on the second blank picture; when element drawing is completed on the second blank picture, roaming the first roaming picture, and obtaining a second target picture according to the first roaming picture after roaming and the size of the display screen;

The display module is further configured to display the second target picture.

Optionally, the processing module is further configured to empty the initial roaming picture when element drawing is completed on the second blank picture, so as to obtain the first blank picture.

Optionally, the processing module executes the second roaming instruction, determines whether to complete element drawing on the second blank picture, and is further configured to roam the initial roaming picture when element drawing is not completed on the second blank picture.

In a third aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-described method steps.

In a fourth aspect, an embodiment of the present application provides an intelligent interactive tablet, which may include: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.

In a fifth aspect, embodiments of the present application provide a computer program product comprising instructions, the program product comprising: a computer program stored in a readable storage medium, from which it can be read by at least one processor of a smart interactive tablet, the at least one processor executing the computer program causing the smart interactive tablet to perform the method of the first aspect.

In the embodiment of the application, the intelligent interaction panel establishes the initial roaming picture after the opening instruction is detected, and the initial roaming picture is not established until the user inputs the first roaming instruction, so that even if a canvas has a plurality of elements, the intelligent interaction panel can have enough time to generate the initial roaming picture, and the purposes of reducing time consumption, reducing the blocking and improving the element drawing efficiency while reducing the memory consumption in the roaming process are achieved through a pre-update mode.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of page roaming for scenario one;

FIG. 2 is a flowchart of a method for operating a page element of an electronic whiteboard according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a roaming mode turned on in a page element operation method of an electronic whiteboard according to an embodiment of the present application;

fig. 4 is a schematic diagram of an initial roaming picture in a page element operation method of an electronic whiteboard according to an embodiment of the present application;

Fig. 5 is a schematic diagram of generating a first target picture in a page element operation method of an electronic whiteboard provided by an embodiment of the present application;

FIG. 6 is another flowchart of a method for operating a page element of an electronic whiteboard according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of a page element operation device of an electronic whiteboard according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an intelligent interaction panel according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims.

In the description of the present application, it should be understood that the terms "first," "second," "third," and the like are used merely to distinguish between similar objects and are not necessarily used to describe a particular order or sequence, nor should they be construed to indicate or imply relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Intelligent interactive flat products, particularly electronic whiteboard products based on intelligent interactive flat, are attracting market attention due to their good experience and rich functionality in the field of teaching conferences. The functions of the electronic whiteboard include: writing without chalk or mouse, rich multimedia resources and powerful computer multimedia tools. Meanwhile, based on the roaming function developed, the contents on the canvas of the electronic whiteboard can be moved and zoomed, so that the whiteboard can accommodate more contents. Since the size of the display screen of the electronic whiteboard is fixed, the process of roaming is actually a process of redrawing elements on the canvas onto a picture of the same size as the electronic whiteboard. Every time a tour is made, new content needs to be redrawn on the picture before rendering and displaying on the display.

Fig. 1 is a schematic diagram of page roaming for scenario one. Referring to fig. 1, a black solid line shows a frame of a display screen of the electronic whiteboard. In the roaming process, the elements on the canvas are drawn on one picture, and when the roaming is carried out, the content of the overlapping area of the picture and the display screen is drawn on one picture with the same size as the display screen, and the pictures with the same size are rendered and displayed. In the roaming process, each element does not need to be drawn.

The scheme can improve the element drawing performance and enable roaming operation to be smoother. But a larger picture is required when the canvas content exceeds the display screen. However, the memory space of the electronic whiteboard is limited, and it is impossible to expand the size of the picture without limitation. Obviously, in the above scheme, the larger the roaming range is, the larger the picture used for drawing all the elements is, and the larger the memory consumption is.

In order to solve the problem of memory consumption caused by the first scheme, a second scheme is proposed in the industry. In the second scheme, when the electronic whiteboard receives a roaming instruction input by a user, if the canvas content exceeds the display screen, a blank picture with the same size as the display screen is created, elements on a page are scaled in an equal ratio, and the scaled elements are drawn on the blank picture to obtain the roaming picture. And when roaming, displaying based on the roaming picture. For example, when the user enlarges the roaming picture, an area to be displayed on the display screen is determined from the roaming picture, the content of the area is redrawn on a picture of the same size as the display screen of the electronic whiteboard, and then the picture of the same size is displayed. The roaming process is actually a process of continuously redrawing the content of the image with the same size, rendering and displaying.

In the second scheme, all elements on the canvas need to be drawn on the picture with the same size when roaming starts, and when the number of the elements is relatively large, drawing is time-consuming, and the clamping is easy to cause. Moreover, the user may perform the roaming operation several times in succession, and each roaming operation needs to redraw the peer-to-peer size picture, which may also cause a jam if there are many elements to redraw each time.

The embodiment of the application provides a page element operation method of an electronic whiteboard, which achieves the purposes of reducing time consumption, reducing blocking and improving element drawing efficiency while reducing memory consumption in a roaming process in a pre-update mode.

The method for operating the page element of the electronic whiteboard provided by the embodiment can be executed by the electronic whiteboard device, the electronic whiteboard device can be realized by software and/or hardware, and the electronic whiteboard device can be formed by two or more physical entities or one physical entity. For example, the electronic whiteboard device may be a computer, a mobile phone, a tablet, a projector, or an interactive smart tablet, etc. In the following embodiments, an interactive smart tablet is described taking an electronic whiteboard device as an example, where the interactive smart tablet may be an integrated device that performs manipulation and man-machine interaction on content displayed on a display tablet through a touch technology, and integrates one or more functions of a projector, an electronic whiteboard, a curtain, a sound device, a television, a video conference terminal, and the like.

The intelligent interactive panel comprises a touch display module, an intelligent processing system (comprising a controller) and the like, and is combined together by an integral structural member and is supported by a special software system, wherein the touch display module comprises a display screen, a touch component and a backlight component, the backlight component is used for providing a backlight source for the display screen, the display screen generally adopts a liquid crystal display device and is used for displaying pictures, the touch component is arranged on the display screen or at the front end of the display screen and is used for collecting touch operation data of a user and transmitting the collected touch operation data to the intelligent processing system for processing.

In practical use, the screen data is displayed on the display screen of the intelligent interaction panel, when a user clicks the content displayed on the display screen through a finger or a touch object such as a touch pen, for example, clicks a graphic button displayed on the display screen, the touch component of the intelligent interaction panel acquires the touch data, so that the touch component converts the touch data into coordinate data of a touch point and then sends the coordinate data to the intelligent processing system, or the coordinate data is converted into the coordinate data of the touch point by the intelligent processing system, after the intelligent processing system obtains the coordinate data of the touch point, corresponding control operation is realized according to a preset program, the display content of the display screen is driven to change, and diversified display and operation effects are realized.

Touch components can be distinguished from technical principles and can be divided into five basic categories; a vector pressure sensing technology touch assembly, a resistance technology touch assembly, a capacitance technology touch assembly, an electromagnetic technology touch screen, an infrared technology touch assembly and a surface acoustic wave technology touch assembly. Touch assemblies can be classified into four categories according to their operating principles and information transmission mediums: resistive, capacitive, electromagnetic, infrared, and surface acoustic wave.

When a user touches the display screen with a finger or a pen, the touch component can collect data of the touch point and send the data to the intelligent processing system, and then different functional applications are realized along with software built in the intelligent processing system, so that touch control of the intelligent processing system is realized.

The application refers to a screen and a large screen which are all display screens of an intelligent interaction panel; the intelligent interaction panel displaying a certain interface means that a display screen of the intelligent interaction panel displays the interface.

Alternatively, the interactive smart tablet may be installed with electronic whiteboard software, which may be pre-installed in the interactive smart tablet. Specifically, the electronic whiteboard software is used for displaying an interactive interface of an electronic whiteboard style on the interactive intelligent tablet, a user can write on the interactive interface in a touch mode, and the interactive interface can display the content written by the user. The content written by the user can be written characters, pictures and the like.

Fig. 2 is a flowchart of a method for operating a page element of an electronic whiteboard according to an embodiment of the present application, where an execution body of the embodiment is an intelligent interactive tablet integrated with the electronic whiteboard, and the embodiment includes:

201. A mode selection interface is displayed.

202. And receiving an opening instruction for opening a roaming mode on the mode selection interface, creating an initial roaming picture with the same size as the electronic whiteboard, and displaying a roaming mode interface, wherein the initial roaming picture comprises elements on a canvas of the electronic whiteboard.

Illustratively, the turn-on command may be a voice command or a touch command, etc. When the starting instruction is a touch instruction, the electronic whiteboard displays a mode selection interface, and a user enters a roaming mode through touch operation on the mode selection interface. Fig. 3 is a schematic diagram of a method for operating a page element of an electronic whiteboard in a roaming mode.

Referring to fig. 3, an operation button is displayed on a mode selection interface of the electronic whiteboard, as indicated by a dashed box in the figure. When the user wants to roam, click "roam" to enter roaming mode. When the electronic equipment enters a roaming mode, a user can perform roaming operations such as shrinkage, amplification, rotation, translation and the like on the canvas; when the electronic device turns off the roaming mode, the user cannot move or zoom the canvas.

When the user starts the roaming mode, the roaming operation is not started. Only after the roaming mode is started, the roaming operation is performed after the user inputs a roaming instruction. For example, for an electronic whiteboard integrated machine for teaching, after a teacher starts the roaming mode, the teacher does not input the roaming instruction, but starts to input the roaming instruction after a period of time. Thus, this act of creating an initial roaming picture is also referred to as pre-update.

The intelligent interaction panel identifies the roaming mode after the start instruction, and simultaneously creates an initial roaming picture with the same size as the display screen of the electronic equipment, wherein the initial roaming picture contains all elements on the canvas of the electronic equipment, such as time images, arrows, tables, handwriting and the like.

Fig. 4 is a schematic diagram of an initial roaming picture in a page element operation method of an electronic whiteboard according to an embodiment of the present application. Referring to fig. 4, assuming that the content on the canvas exceeds the size of the display screen at the beginning, the electronic device performs equal-scale reduction on all elements on the canvas, and redraws the reduced elements, thereby obtaining an initial roaming picture.

It should be noted that, although fig. 4 is described by taking an example in which the canvas size exceeds the display screen size, in the above fig. 4, the elements are scaled down in equal proportion, and then the elements are drawn to obtain the initial roaming picture. However, embodiments of the present application are not limited, and in other possible implementations, the canvas size may be equal to or smaller than the display screen size, at which time the elements are drawn directly without scaling, resulting in an initial roaming image.

203. And receiving a first roaming instruction for requesting roaming of the initial roaming picture on the roaming mode interface.

In the embodiment of the application, roaming refers to the operations of translating, shrinking or amplifying the whole roaming image. The object of each roaming is different, namely the first roaming after the roaming mode is started, and the initial roaming picture is aimed at. And when the first roaming picture is generated in the second roaming process, roaming is conducted aiming at the first roaming picture.

204. Executing the first roaming instruction to roam the initial roaming picture, and displaying a first target picture, wherein the first target picture is determined according to the roamed initial roaming picture and the size of the electronic whiteboard.

The electronic device roams the initial roaming picture, for example, zooms out, zooms in, or pans the roaming picture, in response to the first roaming instruction of the user. Meanwhile, the electronic equipment generates a first target picture according to the initial roaming picture after roaming and the size of the display screen. Next, taking the first roaming instruction as an example of the zoom-in instruction, a detailed description will be given of how to obtain the first target picture. For example, please refer to fig. 5.

Fig. 5 is a schematic diagram of generating a first target picture in a page element operation method of an electronic whiteboard according to an embodiment of the present application. Referring to fig. 5, it is assumed that, initially, the content displayed by the display screen is as shown by the canvas, i.e., the size of the canvas is the same as the size of the display screen. At this time, no scaling is required, and the elements in the canvas are drawn to obtain the initial roaming picture. Then, the user inputs an amplifying instruction, and the electronic equipment responds to the amplifying instruction to amplify the initial roaming picture to obtain the initial roaming picture after roaming.

And the electronic equipment obtains a first target picture according to the size of the display screen and the initial roaming picture after roaming. The first target picture is shown as a thick black solid line box in the figure. In the process of obtaining the first target picture, the electronic equipment selects a target area from the initial roaming picture after roaming according to the touch track and the like of the user, and redraws the content in the target area on the picture with the size of a display screen and the like, so that the first target picture is obtained.

According to the page element operation method of the electronic whiteboard, after the intelligent interaction panel receives the opening instruction input by the user, the roaming mode is opened, and the initial roaming picture is created. And after receiving a first roaming instruction input by a user, the intelligent interaction panel responds to the first roaming instruction to roam the initial roaming picture, and generates and displays a first target picture according to the initial roaming picture after roaming and the size of the display screen. By adopting the scheme, the intelligent interaction panel establishes the initial roaming picture after detecting the opening instruction, and does not need to establish the initial roaming picture until the user inputs the first roaming instruction, so that even if a plurality of elements exist on the canvas, the intelligent interaction panel can have enough time to generate the initial roaming picture, and the purposes of reducing time consumption, reducing blocking and improving element drawing efficiency while reducing memory consumption in the roaming process are achieved in a pre-update mode.

In the above embodiment, when the intelligent interaction panel creates an initial roaming picture with a size equal to that of the electronic whiteboard, first, a first blank picture is created, where the first blank picture is equal to that of the display screen of the electronic device. The electronic whiteboard then scales the elements on the canvas according to the size of the display screen. And finally, the electronic equipment draws the zoomed element on the first blank picture to obtain the initial roaming picture.

In the above embodiment, when the intelligent interaction panel responds to the start instruction to start the roaming mode, a first blank picture is created, the size of the first blank picture is the same as that of the display screen, and the picture is the same as that of the display screen, that is, the number of pixels of the picture is the same as that of the display screen. For example, if the pixels of the display screen are 3840×2160, the pixels of the first blank picture are 3840×2160. And if the size of the canvas is different from the size of the display screen, for example, when the canvas exceeds the display screen, calculating a reduction ratio according to the size of the canvas and the size of the display screen, reducing elements on the canvas according to the reduction ratio, and drawing all the reduced elements on the first blank picture to obtain the initial roaming picture. Amplifying the initial roaming picture, wherein the amplified initial roaming picture is consistent with the target picture; for another example, when the canvas is smaller than the display screen, all elements on the canvas are drawn on the first blank picture according to the current proportion, and the initial roaming picture is obtained.

In the process of generating the initial roaming picture, the scaling is calculated according to the canvas size and the display screen size, however, the embodiment of the application is not limited thereto, and in other possible implementations, a rectangular frame may be determined from the canvas, where the rectangular frame includes all elements and has a size smaller than the canvas size, and the scaling is determined according to the rectangular frame size and the display screen size.

By adopting the scheme, the purpose of accurately generating the initial roaming picture is realized.

In the above embodiment, after the initial roaming picture is obtained by the intelligent interactive flat board roaming the initial roaming picture, a first roaming picture is further generated according to the initial roaming picture after roaming, and the first roaming picture is used for next roaming.

Illustratively, when the canvas exceeds the size of the display screen, scaling is required, and the scaled elements are drawn to obtain an initial roaming picture. After the initial rover picture is roved, for example, assuming that the pixels of the display screen are 1920×1080, the pixels of the initial rover picture are 1920×1080. When the first roaming command is an amplifying command, the initial roaming picture is amplified, and is assumed to be 3840×2160, at this time, the resolution of the initial roaming picture after roaming will be reduced to half of the original resolution, i.e. the resolution of the initial roaming picture after roaming is half of the resolution of the initial roaming picture without roaming. And the intelligent interaction panel redraws the elements on the first target picture according to the current scaling proportion and displays the first target picture. Meanwhile, the intelligent interaction panel updates the initial roaming picture according to the new transformation in a mode of generating the initial roaming picture to obtain a first roaming picture, and the first roaming picture is used for the second roaming. The roaming picture needs to be updated because more than one operation is roaming in the actual scene, and other operations such as adding elements and the like may exist in the middle, and if the roaming picture is not updated according to the current transformation, the subsequent processing becomes more complicated. The initial roaming picture differs from the first roaming picture in that the latter roaming picture does not require additional calculation of the last roaming change relative to the former roaming picture. For example, in the roaming process, the user adds one more new element on the initial roaming picture, and at this time, if the initial roaming picture is not updated, the new element cannot be reflected when the roaming is performed based on the initial roaming picture.

In the embodiment of the application, the roaming picture is only used for synchronously displaying the roaming effect during roaming, and elements in a target area in the initial roaming picture after roaming are transformed and redrawn through scaling and translation data in the roaming process, so that a first target picture is obtained, and then the first target picture is rendered and displayed on a display screen. And simultaneously, the intelligent interaction panel rescales all the transformed elements to a picture with the same size as the screen to obtain a first roaming picture. The first roaming picture is used for a second roaming, and the second roaming is that after the user inputs a first roaming instruction to raise his hands, the roaming instruction is input again.

By adopting the scheme, after each roaming, the intelligent interaction panel updates the roaming picture so as to facilitate the next roaming. Because the updated roaming picture reflects the change of one-time roaming, when roaming is carried out based on the new roaming picture, the change of the last roaming is not required to be recalculated, the calculation efficiency is improved, and the calculation complexity is reduced.

In the above embodiment, when the intelligent interaction panel generates the first roaming picture according to the initial roaming picture after roaming, first, it is detected that the user ends the first roaming instruction, and a second blank picture is created. And then, the intelligent interaction panel zooms the initial roaming picture after roaming according to the size of the display screen to obtain a zoomed picture. And finally, the intelligent interaction panel redraws the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

The intelligent interaction flat board detects whether the user lifts the hand after the intelligent interaction flat board detects that the user inputs the first roaming instruction, if the user does not lift the hand, the intelligent interaction flat board indicates that the user is roaming the initial roaming image, and at the moment, the intelligent interaction flat board continues to respond to the first roaming instruction to roam the initial roaming image. If the user lifts his hand, that is, the gesture corresponding to the first roaming instruction leaves the display screen, the user is stated to finish the first roaming instruction. At this time, the intelligent interaction panel creates a second blank picture, and scales the initial roaming picture after roaming according to the size of the display screen, so as to obtain a scaled picture.

Because the resolution of the initial roaming image is lower, when the first roaming instruction is the zoom-in instruction, the resolution of the elements on the initial roaming image after roaming is still the resolution before the first roaming instruction is received, although the elements are zoomed in. For example, assuming that the size of the initial roaming picture is 1920×1080, when the first input roaming instruction is an enlargement instruction, the initial roaming picture is enlarged to 3840×2160. At this time, the elements on the initial roaming picture after roaming are enlarged, but the content displayed is still 1920×1080 resolution. And determining a target area from the initial roaming picture after roaming according to the size of the display screen by the intelligent interaction panel, and redrawing the target area so that the resolution of the redrawing element is the resolution after roaming, namely the resolution under the size of 3840x2160. And similarly, the intelligent interaction panel draws elements in the whole initial roaming picture after roaming to the second blank picture according to the resolution after roaming, so as to obtain a first roaming picture.

By adopting the scheme, the purpose of reducing the complexity of subsequent roaming calculation is realized.

In the above embodiment, the user may roam multiple times after turning on the roaming mode. After each roaming is finished, the roaming picture is updated, and when the roaming is performed next time, the roaming is performed based on the roaming picture updated last time. For example, please refer to fig. 6.

Fig. 6 is another flowchart of a method for operating a page element of an electronic whiteboard according to an embodiment of the present application. The embodiment comprises the following steps:

601. And after the intelligent interaction flat panel displays the first target picture, receiving a second roaming instruction for requesting to roam the first roaming picture.

The intelligent interaction panel receives a first roaming instruction, detects that a user lifts his hand and displays a first target picture, and finishes the first roaming. The electronic whiteboard continues to monitor, and monitors the second roaming instruction.

602. Executing the second roaming instruction, judging whether element drawing is completed on the second blank picture, and executing step 603 when element drawing is completed on the second blank picture; when element drawing is not completed on the second blank picture, step 605 is performed.

The intelligent interaction panel detects that the user inputs the second roaming instruction, and then judges whether element drawing is finished on the second blank picture, namely whether the first roaming picture is obtained. If the intelligent interaction panel finishes drawing all elements on the second blank picture, the intelligent interaction panel is informed that the intelligent interaction panel has obtained the first roaming picture and finishes updating the roaming picture, and the intelligent interaction panel executes step 603; if the intelligent interactive tablet does not complete drawing of some or all elements on the second blank picture, it is indicated that the electronic whiteboard does not obtain the first roaming picture, and the updating of the roaming picture is not completed, at this time, the intelligent interactive tablet executes step 605.

603. Roaming the first roaming picture, and obtaining a second target picture according to the size of the first roaming picture and the size of the display screen after roaming.

When the second roaming instruction is a zoom instruction, the intelligent interaction panel zooms the first roaming picture, and obtains a second target picture according to the sizes of the first roaming picture and the display screen after roaming. See the description of step 204, and are not repeated here.

And when the second roaming quality is a translation instruction, the intelligent interaction panel translates the first roaming picture, and the translated first roaming picture is used as a second target picture.

604. And displaying the second target picture.

By adopting the scheme, when the intelligent interactive flat board roams for the time, whether the roaming picture is updated after the last roaming is finished is judged, and if the roaming picture is updated, the updated roaming picture is roamed, so that the purpose of quick roaming is realized.

605. Roaming the initial roaming picture.

By adopting the scheme, when the intelligent interaction flat board roams for the time, judging whether the roaming picture is updated after the last roaming is finished, and if the roaming picture is updated, roaming the updated roaming picture; if the roaming picture is not updated, roaming is carried out based on the roaming picture of the last roaming, the roaming picture does not need to be waited for to be updated, and the time is saved and meanwhile the blocking is avoided.

In the above embodiment, when element drawing is completed on the second blank picture, the initial roaming picture is emptied to obtain the first blank picture.

If the element drawing is completed on the second blank picture, the intelligent interaction panel is illustrated to obtain a first roaming picture, and the updating of the roaming picture is completed. Because the next roaming is performed based on the first roaming picture, the intelligent interaction panel empties the initial roaming picture to obtain a first blank roaming picture, and the first blank roaming picture can be used for generating a third roaming picture in the third roaming process, so that the purposes of avoiding the roaming picture in the generating process and occupying a large amount of memory space are achieved.

In the above embodiment, when the first roaming instruction is a translation instruction, the first roaming picture obtained by updating the initial roaming picture after the first roaming is finished is identical to the initial roaming picture, so that when the first roaming instruction is a translation instruction, the roaming picture does not need to be updated, that is, the first roaming picture does not need to be generated after the first roaming is finished. Similarly, when the second roaming instruction is a translation instruction, the roaming picture may not be updated after the second roaming is finished.

In addition, it should be noted that, in the above embodiment, the first roaming instruction and the second roaming instruction respectively represent the first time the user inputs the roaming instruction and the second time the roaming instruction is input after the roaming mode is turned on. However, the embodiment of the present application is not limited to the above, and in other possible implementations, the first roaming instruction and the second roaming instruction are two adjacent roaming instructions after the roaming mode is turned on. For example, third and fourth times, fourth and fifth times, etc. In addition, in the embodiment of the present application, one roaming may be more than one operation. For example, the same roam may involve multiple operations of panning, zooming, etc. In summary, the user inputs the roaming command to raise his hand, and the roaming is completed, during which the user may perform various operations such as panning, zooming, etc.

The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

Fig. 7 is a schematic structural diagram of a page element operation device of an electronic whiteboard according to an embodiment of the present application. The page element operating device of the electronic whiteboard can be realized to be all or part of the intelligent interaction tablet through software, hardware or a combination of the software and the hardware. Referring to fig. 7, the page element operation device of the electronic whiteboard includes a display module 71, a receiving module 72 and a processing module 73.

A display module 71 for displaying a mode selection interface;

a receiving module 72, configured to receive an opening instruction for opening a roaming mode on the mode selection interface;

a processing module 73, configured to create an initial roaming picture having a size equal to that of the electronic whiteboard, where the initial roaming picture includes an element on a canvas of the electronic whiteboard;

The display module 71 is further configured to display a roaming mode interface;

The receiving module 72 is further configured to receive, on the roaming mode interface, a first roaming instruction for requesting roaming of the initial roaming picture;

the processing module 73 is further configured to execute the first roaming instruction to roam the initial roaming picture, and determine a first target picture according to the roamed initial roaming picture and the size of the electronic whiteboard;

the display module 71 is further configured to display the first target picture.

Optionally, the processing module 73 is configured to create a first blank picture when creating an initial roaming picture having a size equal to that of the electronic whiteboard, where the first blank picture has a size equal to that of a display screen of the electronic device; scaling elements on the canvas according to the size of the electronic whiteboard; and drawing the zoomed element on the first blank picture to obtain the initial roaming picture.

Optionally, the processing module 73 is further configured to generate a first roaming picture according to the initial roaming picture after roaming, where the first roaming picture is used for next roaming.

Optionally, the processing module 73 is configured to detect that the user ends the first roaming instruction, and create a second blank picture with a size equal to that of the electronic whiteboard; scaling the initial roaming picture after roaming according to the size of the electronic whiteboard to obtain a scaled picture; and redrawing the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

Optionally, the receiving module 72 is further configured to receive a second roaming instruction for requesting to roam the first roaming picture after the display module 71 displays the first target picture;

the processing module 73 is further configured to execute the second roaming instruction, and determine whether to complete element drawing on the second blank picture; when element drawing is completed on the second blank picture, roaming the first roaming picture, and obtaining a second target picture according to the first roaming picture after roaming and the size of the display screen;

The display module 71 is further configured to display the second target picture.

Optionally, the processing module 73 is further configured to empty the initial roaming picture when element drawing is completed on the second blank picture, so as to obtain the first blank picture.

Optionally, the processing module 73 executes the second roaming instruction to determine whether to perform element drawing on the second blank picture, and is further configured to roam the initial roaming picture when element drawing is not performed on the second blank picture.

It should be noted that, when the page element operation device of the electronic whiteboard provided in the foregoing embodiment executes the page element operation method of the electronic whiteboard, only the division of the foregoing functional modules is used for illustrating, in practical application, the foregoing functional allocation may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the page element operation device of the electronic whiteboard provided in the above embodiment belongs to the same concept as the page element operation method embodiment of the electronic whiteboard, and the implementation process is shown in the method embodiment, which is not described herein again.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are adapted to be loaded by a processor and execute the method steps of the embodiment shown in fig. 2 to fig. 6, and the specific execution process may refer to the specific description of the embodiment shown in fig. 2 to fig. 6, which is not repeated herein. The device on which the computer storage medium resides may be an intelligent interactive tablet.

Fig. 8 is a schematic structural diagram of an intelligent interaction panel according to an embodiment of the present application. As shown in fig. 8, the intelligent interactive tablet 800 may include: at least one processor 801, at least one network interface 804, a user interface 803, memory 805, at least one communication bus 802.

Wherein a communication bus 802 is used to enable connected communication between these components.

The user interface 803 may include a Display screen (Display) and a Camera (Camera), and the optional user interface 803 may further include a standard wired interface and a wireless interface.

The network interface 804 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.

Wherein the processor 801 may include one or more processing cores. The processor 801 utilizes various interfaces and lines to connect the various portions of the overall intelligent interactive tablet 800, perform various functions of the intelligent interactive tablet 800 and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 805, and invoking data stored in the memory 805. Alternatively, the processor 801 may be implemented in at least one hardware form of digital signal Processing (DIGITAL SIGNAL Processing, DSP), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 801 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing the content required to be displayed by the display screen; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 801 and may be implemented on a single chip.

The Memory 805 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 805 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 805 may be used to store instructions, programs, code, sets of codes, or instruction sets. The memory 805 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-described respective method embodiments, etc.; the storage data area may store data or the like referred to in the above respective method embodiments. The memory 805 may also optionally be at least one storage device located remotely from the aforementioned processor 801. As shown in FIG. 8, an operating system, a network communication module, a user interface module, and an operating application of the intelligent interactive tablet may be included in the memory 805, which is a type of computer storage medium.

In the intelligent interactive tablet 800 shown in fig. 8, the user interface 803 is mainly used for providing an input interface for a user, and acquiring data input by the user; and the processor 801 may be used to invoke the operating application of the intelligent interactive tablet stored in the memory 805 and specifically perform the above-described method of operating the page elements of the electronic whiteboard.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims (14)

1. A method for operating a page element of an electronic whiteboard, comprising:

Displaying a mode selection interface;

Receiving an opening instruction for opening a roaming mode on the mode selection interface, creating an initial roaming picture with the same size as the electronic whiteboard, and displaying a roaming mode interface, wherein the initial roaming picture comprises elements on a canvas of the electronic whiteboard;

receiving a first roaming instruction for requesting roaming of the initial roaming picture on the roaming mode interface;

Executing the first roaming instruction to roam the initial roaming picture, and displaying a first target picture, wherein the first target picture is determined according to the roamed initial roaming picture and the size of the electronic whiteboard;

Further comprises:

Updating an initial roaming picture according to the initial roaming picture after roaming to generate a first roaming picture, wherein the first roaming picture is used for next roaming, and the initial roaming picture and the first roaming picture are different in that the last roaming picture does not need to additionally calculate the change of the last roaming relative to the previous roaming picture.

2. The method of claim 1, wherein the creating the initial roaming picture that is the same size as the electronic whiteboard comprises:

creating a first blank picture, wherein the first blank picture has the same size as a display screen of the electronic whiteboard;

scaling elements on the canvas according to the size of the electronic whiteboard;

and drawing the zoomed element on the first blank picture to obtain the initial roaming picture.

3. The method of claim 1, wherein updating the initial roaming picture based on the initial roaming picture after roaming to generate the first roaming picture comprises:

detecting that the user finishes the first roaming instruction, and creating a second blank picture with the same size as the electronic whiteboard;

scaling the initial roaming picture after roaming according to the size of the electronic whiteboard to obtain a scaled picture;

And redrawing the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

4. The method of claim 3, wherein after displaying the first target picture, further comprising:

Receiving a second roaming instruction for requesting roaming of the first roaming picture;

executing the second roaming instruction, and judging whether element drawing is completed on the second blank picture or not;

when element drawing is completed on the second blank picture, roaming the first roaming picture, and obtaining a second target picture according to the first roaming picture after roaming and the size of the display screen of the electronic whiteboard;

And displaying the second target picture.

5. The method as recited in claim 4, further comprising:

and when element drawing is completed on the second blank picture, the initial roaming picture is emptied to obtain a first blank picture.

6. The method of claim 4, wherein the executing the second roaming instruction, after determining whether the element drawing is completed on the second blank picture, further comprises:

and roaming the initial roaming picture when element drawing is not completed on the second blank picture.

7. A page element operation device of an electronic whiteboard, comprising:

The display module is used for displaying a mode selection interface;

The receiving module is used for receiving an opening instruction for opening the roaming mode on the mode selection interface;

The processing module is used for creating an initial roaming picture with the same size as the electronic whiteboard, wherein the initial roaming picture comprises elements on a canvas of the electronic whiteboard;

The display module is also used for displaying a roaming mode interface;

The receiving module is further configured to receive a first roaming instruction on the roaming mode interface, where the first roaming instruction is used to request roaming of the initial roaming picture;

the processing module is further configured to execute the first roaming instruction to roam the initial roaming picture, and determine a first target picture according to the roamed initial roaming picture and the size of the electronic whiteboard;

the display module is further used for displaying the first target picture;

The processing module is further configured to update an initial roaming picture according to the initial roaming picture after roaming to generate a first roaming picture, where the first roaming picture is used for next roaming, and the difference between the initial roaming picture and the first roaming picture is that no additional calculation is required for the change of the last roaming of the subsequent roaming picture relative to the previous roaming picture.

8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

The processing module is used for creating a first blank picture when creating an initial roaming picture with the same size as the electronic whiteboard, wherein the first blank picture has the same size as a display screen of the electronic whiteboard; scaling elements on the canvas according to the size of the electronic whiteboard; and drawing the zoomed element on the first blank picture to obtain the initial roaming picture.

9. The apparatus of claim 7, wherein the device comprises a plurality of sensors,

The processing module is used for detecting that the user finishes the first roaming instruction and creating a second blank picture with the same size as the electronic whiteboard; scaling the initial roaming picture after roaming according to the size of the electronic whiteboard to obtain a scaled picture; and redrawing the elements in the scaled picture on the second blank picture to obtain the first roaming picture.

10. The apparatus of claim 9, wherein the device comprises a plurality of sensors,

The receiving module is further configured to receive a second roaming instruction for requesting roaming of the first roaming picture after the display module displays the first target picture;

The processing module is further configured to execute the second roaming instruction, and determine whether element drawing is completed on the second blank picture; when element drawing is completed on the second blank picture, roaming the first roaming picture, and obtaining a second target picture according to the first roaming picture after roaming and the size of the display screen of the electronic whiteboard;

The display module is further configured to display the second target picture.

11. The apparatus of claim 10, wherein the device comprises a plurality of sensors,

And the processing module is further used for clearing the initial roaming picture when element drawing is completed on the second blank picture so as to obtain a first blank picture.

12. The apparatus of claim 10, wherein the device comprises a plurality of sensors,

And the processing module executes the second roaming instruction, judges whether element drawing is completed on the second blank picture, and is also used for roaming the initial roaming picture when the element drawing is not completed on the second blank picture.

13. A computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method steps of any of claims 1-6.

14. An intelligent interactive tablet, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1-6.