CN110174991B - Highlight pen processing method and device - Google Patents
Highlight pen processing method and device Download PDFInfo
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- CN110174991B CN110174991B CN201910413506.8A CN201910413506A CN110174991B CN 110174991 B CN110174991 B CN 110174991B CN 201910413506 A CN201910413506 A CN 201910413506A CN 110174991 B CN110174991 B CN 110174991B
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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
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
Abstract
The invention discloses a highlight pen processing method and device. Wherein, the method comprises the following steps: displaying the writing track of the existing highlight pen on the lasting layer; responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; and responding to the completion of the writing operation, and displaying the combined writing track of the persistence layer and the cache layer. The invention solves the technical problems that the processing mode in the related technology occupies larger system resources, has low efficiency and is easy to cause the phenomenon of pause when multi-finger writing or single-finger large-range writing is carried out for a long time.
Description
Technical Field
The invention relates to the field of electronic whiteboards, in particular to a highlight pen processing method and device.
Background
The annotation tool of the electronic whiteboard has a highlight pen function and supports multi-finger writing. The basic behavior is that the same touch point is written once, and the highlight color is not overlapped and deepened. Other situations, such as multi-fingered writing or multi-fingered writing, result in a darker highlight. The track display of the highlight pen is realized by recording the writing track of a single finger and combining and splicing all the writing tracks during refreshing each time. The method occupies larger system resources, has low efficiency, and is easy to cause blockage when multi-finger writing or single-finger large-range writing is carried out for a long time.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a highlight pen processing method and device, which at least solve the technical problems that a processing mode in the related technology occupies larger system resources, the efficiency is low, and a pause phenomenon is easy to occur when multi-finger writing or single-finger large-range writing is carried out for a long time.
According to an aspect of an embodiment of the present invention, there is provided a highlight pen processing method including: displaying the writing track of the existing highlight pen on the lasting layer; responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; and responding to the completion of the writing operation, and displaying the combined writing track of the persistent layer and the cache layer.
Optionally, in response to the writing operation of the highlight pen, displaying, in a plurality of buffer areas divided on a buffer layer, writing tracks corresponding to the writing operation respectively includes: judging whether a writing track exists in the cache region; and in response to the refreshing operation performed on the cache region with the writing track, displaying the writing track of the cache region.
Optionally, the writing track is a single-contact writing track, the writing track is divided into a plurality of handwriting sections, and in response to a refresh operation performed on a cache area with the writing track, displaying the writing track of the cache area includes: responding to the writing operation performed in the cache area, and determining that all handwriting sections of the cache area need to be displayed, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; and responding to the refreshing operation performed in the cache area, and displaying all handwriting sections in the cache area.
Optionally, before the refreshing operation performed in response to the cache area, displaying all handwriting sections in the cache area includes: judging whether the handwriting sections in the cache area are overlapped; determining a dirty area of the cache area under the condition that the cache area has overlapped handwriting sections, wherein the dirty area is a minimum external area of a new handwriting section, and the new handwriting section is a last written handwriting section in a plurality of handwriting sections overlapped in the cache area; and responding to the refreshing operation performed by the cache area, refreshing the dirty area, and displaying all handwriting sections of the cache area.
Optionally, the dirty region is a minimum bounding rectangle region of the new handwriting segment.
Optionally, the writing tracks are multiple single-contact writing tracks written by multiple contacts, and in response to a refresh operation performed on a cache region with writing tracks, displaying the writing tracks of the cache region includes: responding to single-contact writing operation performed in a cache region, and determining single-contact writing tracks corresponding to the single-contact writing operation to be displayed on a cache bitmap of the cache region, wherein the cache bitmap is a cache layer of the cache region through which each single-contact writing track passes, and the cache region comprises one or more cache bitmaps; and displaying the plurality of single-contact writing tracks in response to a refreshing operation performed on the cache region with the writing tracks, wherein the ink marks of the overlapped parts of different single-contact writing tracks are deepened.
Optionally, determining that what needs to be displayed is on the cache bitmap in the cache region, where a single-touch writing track corresponding to the single-touch writing operation includes: in response to a single-touch write operation by a cache region, a bitmap is assigned to the cache region through which each single-touch write trace passes.
According to another aspect of an embodiment of the present invention, there is provided a highlight pen processing apparatus including: the first display unit is used for displaying the writing track of the existing highlight pen on the lasting layer; the second display unit is used for responding to the writing operation of the highlight pen, and displaying writing tracks corresponding to the writing operation on a plurality of cache areas divided on a cache layer respectively; and the third display unit is used for responding to the completion of the writing operation and displaying the combined writing track of the persistent layer and the cache layer.
According to another aspect of the embodiments of the present invention, there is provided a storage medium, the storage medium including a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the highlight pen processing method according to any one of the above.
According to another aspect of the embodiments of the present invention, there is provided a processor for executing a program, wherein the program executes to perform the highlight pen processing method according to any one of the above.
According to another aspect of the embodiments of the present invention, there is provided an electronic whiteboard including: a storage medium, a processor, and a display, wherein the storage medium stores a program; the processor is configured to run a program stored in the storage medium to control the display to execute any one of the above highlight pen processing methods.
In the embodiment of the invention, the writing track of the existing highlight pen is displayed on the persistence layer; responding to the writing operation of a highlight pen on the electronic whiteboard, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; displaying a writing track of a contact of a highlight pen in a manner of responding to the completion of the writing operation and displaying the combined writing track of the persistent layer and the cache layer, and responding to the writing operation of the highlight pen on the electronic whiteboard; in the display area that the writing orbit corresponds, highlight the partial orbit that the contact was updated, wherein, electronic whiteboard's screen divides into a plurality of display areas, and write the orbit of the highlight pen that has write and this writing operation's orbit through persistence layer and buffer layer respectively storage, the purpose of only changing the division region of writing the orbit and going on updating has been reached, thereby realized reducing and occupied system resource, and the efficiency is improved, and be difficult to take place the technological effect of card pause, and then solved that the processing method among the correlation technique occupies system resource great, inefficiency, and when writing on a large scale for a long time at the multi-finger or single finger, the technical problem of the very easy card pause phenomenon that takes place.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a highlight pen processing method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a highlight pen processing method according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a highlight pen processing method according to a third embodiment of the present invention;
FIG. 4 is a flow chart of a highlighter processing method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a highlight pen processing apparatus according to a sixth embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of description, some terms or expressions referred to in the embodiments of the present application are explained below:
the intelligent interactive panel, also called an interactive intelligent panel, may be an integrated device that controls content displayed on a display panel and implements human-computer interaction operations through a touch technology, and integrates one or more functions of a projector, an electronic whiteboard, a screen, a sound, a television, a video conference terminal, and the like.
The display screen, in the embodiments of the present specification, refers to a touch screen, and a touch panel, and is an inductive liquid crystal display device, when a graphical button on the screen is touched, the tactile feedback system on the screen can drive various connecting devices according to a pre-programmed program, so as to replace a mechanical button panel, and create a vivid video effect by using a liquid crystal display screen. Distinguishing touch screens from technical principles can be divided into five basic categories: a vector pressure sensing technology touch screen, a resistance technology touch screen, a capacitance technology touch screen, an infrared technology touch screen, and a surface acoustic wave technology touch screen. According to the working principle of the touch screen and the medium for transmitting information, the touch screen can be divided into four categories: resistive, capacitive, infrared, and surface acoustic wave.
When a user uses the highlight pen to write on the screen, the contact point coordinate of the highlight pen is positioned, and the moving track of the contact point of the highlight pen on the screen is recorded, so that the writing track of the highlight pen is displayed.
The screen and the large screen mentioned in the application refer to the display screen of the intelligent interactive flat panel; the intelligent interaction panel displays a certain interface, namely the display screen of the intelligent interaction panel displays the interface.
The highlight pen processing method of the electronic whiteboard provided by the embodiment of the invention can be used for intelligent interactive equipment, the intelligent interactive equipment can be the intelligent interactive flat plate, and can be executed through writing display equipment of the intelligent interactive flat plate, the writing display equipment can be realized in a software and/or hardware mode, and the writing display equipment can be formed by two or more physical entities or formed by one physical entity. The writing display device can be a computer, a mobile phone, a tablet, a projector and the like. In the following embodiments, the interactive smart tablet may be an integrated device that controls content displayed on the display tablet and implements human-computer interaction operations through a touch technology, and integrates one or more functions of a projector, an electronic whiteboard, a curtain, a sound box, a television, a video conference terminal, and the like.
Example one
In accordance with a first embodiment of the present invention, there is provided a method embodiment of a highlight pen handling method, it should be noted that the steps shown in the flowchart of the figure may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different than that here.
Fig. 1 is a flowchart of a highlight pen processing method according to a first embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S102, displaying the writing track of the existing highlight pen on the persistence layer;
step S104, responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer;
and S106, responding to the completion of the writing operation, and displaying the writing track after the persistence layer and the cache layer are combined.
Through the steps, the writing track of the existing highlight pen is displayed on the lasting layer; responding to the writing operation of a highlight pen on the electronic whiteboard, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; displaying the writing track of the contact of the highlight pen in a mode of responding to the completion of the writing operation and displaying the combined writing track of the persistent layer and the cache layer and responding to the writing operation of the highlight pen on the electronic whiteboard; in the display area that the writing orbit corresponds, highlight the partial orbit that the contact was updated, wherein, electronic whiteboard's screen divides into a plurality of display areas, and write the orbit of the highlight pen that has write and this writing operation's orbit through persistence layer and buffer layer respectively storage, the purpose of only changing the division region of writing the orbit and going on updating has been reached, thereby realized reducing and occupied system resource, and the efficiency is improved, and be difficult to take place the technological effect of card pause, and then solved that the processing method among the correlation technique occupies system resource great, inefficiency, and when writing on a large scale for a long time at the multi-finger or single finger, the technical problem of the very easy card pause phenomenon that takes place.
The steps can be applied to equipment such as electronic whiteboards and intelligent interactive panels. The writing operation of the highlight pen on the screen of the intelligent interactive tablet can be divided into single-pen single-time writing, namely, a contact of the highlight pen, and the writing operation is continuously performed at one time; writing for multiple times by a single pen, namely, writing for multiple times by a contact of a highlight pen; the multi-pen writing is that the contacts of a plurality of high-brightness pens are used for writing at one time, that is, the contacts of a plurality of single pens are used for simultaneous operation. The screen of the intelligent interactive tablet is also the screen of the electronic whiteboard, and in this embodiment, the electronic whiteboard tool may be an application program on the intelligent interactive tablet. When the screen of the electronic whiteboard displays the highlight pen track, the writing tracks of a plurality of single contacts are recorded, and then all the writing tracks of the single contacts are overlapped when the screen displays the highlight pen track. In the process of single-stroke multi-time writing and multi-stroke writing, if the tracks of different contacts are overlapped, the part of the overlapped tracks is subjected to a condition of color emphasis, so that redundant display of the overlapped part is caused. If the trajectory of a single touch is too long, a large amount of data calculation is required in the loading process, and a stuck situation occurs.
Therefore, this application divides the writing region of above-mentioned highlight pen into a plurality of display areas, after the writing orbit of above-mentioned highlight pen is received in the writing region of above-mentioned highlight pen, divide regional demonstration according to the display area who divides, not updating the demonstration including the region that the orbit did not have the orbit or the orbit does not have the change of writing the orbit, can effectively reduce the data operand who shows the highlight pen orbit in-process, thereby effectively improve the smoothness nature that the highlight pen writes, avoid taking place the card pause phenomenon, and can improve the speed that the highlight pen orbit shows.
When the writing track of the highlighting pen is displayed, the existing writing track and the new writing track are in the same layer, that is, the durable layer, and when the writing track is updated and the new writing track is possibly modified, the existing writing track is also modified, for example, when the new writing track is written, the erasing operation is performed on the new writing track, and the writing track written before is possibly erased. Therefore, the existing writing track is displayed on the persistent layer, the track written by the highlighting pen is cached and displayed on the cache layer, when the writing track on the cache layer is determined to be stored, the writing track is updated, and the writing track on the cache layer is merged and displayed on the persistent layer.
When the screen of the electronic whiteboard is divided into a plurality of display areas, the cache layer can be divided, and the cache layer and the persistent layer can be divided. The electronic screen is generally rectangular when the display area is divided, so that the display area is also divided into rectangles when the display areas are divided, and the division is not only convenient, but also convenient for operation and data processing.
The persistence layer may be a layer on the display screen for persistently displaying the confirmed writing track, or may be a data layer on a system logic level of the display screen for implementing persistence of display data corresponding to the writing track, where the persistence layer is relatively independent from other layers of the display screen. The cache layer is used for displaying an unconfirmed writing track, and the cache layer can also be a data layer which is used for caching display data corresponding to the writing track on a system logic level. When the writing track is written, along with the touch screen operation of the user, the writing track corresponding to the touch screen operation needs to be displayed on the cache layer, and the writing track on the cache layer can be edited, for example, erased, modified, changed in color, changed in thickness, and the like. After the writing track on the cache layer is confirmed, the confirmed writing track is transferred to the persistent layer for displaying, it should be noted that the persistent layer and the cache layer are relatively independent, and the writing track of the persistent layer can also be edited.
The persistent layer and the cache layer are bitmap images, the bitmap images are also called dot matrix images or drawing images and are composed of single points called pixels (picture elements), and the points can be arranged and dyed differently to form patterns. The persistent layer is a bitmap for displaying the confirmed writing track, and the confirmed writing track is displayed on the bitmap corresponding to the persistent layer. The cache layer displays an unconfirmed writing track on the basis of the bitmap of the persistent layer, namely displays the writing track of the persistent layer and the unconfirmed written writing track on the bitmap of the cache layer. The cache horizon map is divided into a plurality of cache regions, updating is carried out according to the cache regions, the cache regions divided by the cache horizon map are also bitmaps in nature, and when a writing track leaves the cache regions and enters a new cache region, the cache region from which the writing track leaves is updated, namely the bitmap corresponding to the cache region is updated.
Example two
According to a second embodiment of the present invention, an embodiment of a highlight pen processing method is provided, and fig. 2 is a flowchart of a highlight pen processing method according to the second embodiment of the present invention; as shown in fig. 2, it should be noted that in this embodiment, a detailed refinement is implemented on the basis of the first embodiment, and in response to the writing operation of the highlight pen, displaying writing tracks corresponding to the writing operation in a plurality of buffer areas divided on a buffer layer respectively includes:
step S202, judging whether a writing track exists in a cache region;
and step S204, responding to the refreshing operation of the cache region with the writing track under the condition that the writing track exists in the cache region, and displaying the writing track of the cache region.
Because the writing operation of the highlighting pen on the cache layer is gradually slow and dynamically changed, the highlighting pen can pass through the same or different cache regions one by one, but when the caching layer is updated, only the partitioned region of the cache layer with the writing track can be updated, the data volume of each update can be effectively reduced, and the operation burden of the system is lightened. The writing track of the buffer area is displayed, that is, the writing track of the buffer area is displayed on the persistent layer.
Aiming at the writing operation of a single contact on the electronic whiteboard, highlighting part of the updated track of the contact in a display area corresponding to the writing track, and comprising the following steps: determining a partial track updated by the single touch point, wherein the updated partial track is the rest track except the repeated track written before the single touch point in the writing track; highlighting the updated partial track.
And the updated partial track is the residual partial track except the partial track overlapped with the existing track in the writing track of the highlight pen, and the partial track of the highlight pen is displayed in a divided display area in a divided mode, so that the effect that different single-pen writing tracks are overlapped and the overlapped part is not deepened in the single-pen writing process is realized. That is, the display area where the updated partial track of the highlight pen is located is updated, so that repeated note display is effectively avoided, the updating display range of the display area is further reduced, and a certain positive effect on improving the display speed is achieved.
After the writing area of the highlight pen receives the writing track of the highlight pen, the display area is divided to display, the area without track or track change is not updated and displayed, the data operand in the process of displaying the track of the highlight pen can be effectively reduced, the writing fluency of the highlight pen is effectively improved, the phenomenon of blocking and stopping is avoided, and the speed of displaying the track of the highlight pen can be improved.
Optionally, the writing track is a single-contact writing track, the writing track is divided into a plurality of handwriting sections, and in response to a refresh operation performed on a cache area with the writing track, displaying the writing track of the cache area includes: responding to the writing operation performed in the cache area, determining that all handwriting sections are required to be displayed in the cache area, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; and responding to the refreshing operation performed in the cache area, and displaying all handwriting sections in the cache area.
The writing operation of above-mentioned highlight pen, including single contact single writing operation, single contact multiple writing operation, multiple contact writing operation, wherein, can write the operation with the multiple contact and divide into, single contact single writing operation and the combination of single contact multiple writing operation, during single contact single writing operation, there is longer single contact single writing operation, because longer writing trace data volume is big, it is possible to cause the card to pause when the renewal, consequently will write the trace and divide into a plurality of handwriting sections, show the handwriting section at the buffer memory region that has the handwriting section.
Before highlighting part of the track updated by the contact in the display area corresponding to the writing track, the method further comprises the following steps: and displaying the minimum circumscribed area of the writing track, and determining the minimum circumscribed area as a display area.
When writing, the edges of the real tracks of most writing tracks are quite uneven, and when operation and processing are carried out, the minimum external connection area corresponding to the writing tracks is selected as the display area of the writing tracks.
Optionally, the display of the screen division of the electronic whiteboard is updated once when the writing operation of the highlight pen is performed once. The effect that the display is updated on the display screen can be achieved every time the highlight pen is written.
In this embodiment, when ink marks other than the writing trace of the highlighting pen are generated due to a false touch or screen failure during writing with the highlighting pen, the ink marks do not belong to the writing trace and do not contain information to be transmitted by the highlighting pen, and therefore the ink marks are regarded as useless ink marks during writing with the highlighting pen, and the area range where the useless ink marks are located is a useless area. The ink from the garbage area needs to be updated by discarding the dirty area. For example, after the highlight pen completes the writing track, whether a useless area with ink discontinuous from the main writing track exists in the screen is detected; and under the condition that the useless area is detected, determining a divided display area where the useless area is located, and updating the writing track of the highlight pen. The display area having the unnecessary area is also updated, and when the area is updated, ink in the unnecessary area is erased.
EXAMPLE III
According to a third embodiment of the present invention, an embodiment of a highlight pen processing method is provided, and fig. 3 is a flowchart of a highlight pen processing method according to the third embodiment of the present invention; as shown in fig. 3, it should be noted that, in this embodiment, a specific refinement is implemented on the basis of the second embodiment, and before the refresh operation performed in response to the cache area displays all handwriting segments in the cache area, the following steps are included:
step S302, judging whether the handwriting sections in the cache area are overlapped;
step S304, under the condition that the cache region has overlapped handwriting sections, determining a dirty region of the cache region, wherein the dirty region is the minimum circumscribed region of the new handwriting section, and the new handwriting section is the last written handwriting section in the plurality of handwriting sections overlapped in the cache region;
and S306, responding to the refreshing operation performed in the cache area, refreshing the dirty area, and displaying all handwriting sections in the cache area.
In the display area corresponding to the writing track, highlighting the partial track updated by the contact further comprises: aiming at the writing operation of a multi-contact formed by a plurality of single contacts on the electronic whiteboard, respectively displaying the updated partial track of the single contact on a bitmap corresponding to the single contact by adopting a highlight display mode of the single contact; combining the bitmaps corresponding to the single contacts to obtain a display result of the highlighted multi-contact.
The dirty region may be a part of a bitmap belonging to the cache layer, and in the case of single-stroke writing, when a writing track is long, a new track may intersect with an already written track, so that an already updated cache region may exist, and needs to be updated again. The partial area may be a minimum circumscribed area of the writing trace and may be a rectangle. When the writing trace is updated, only the dirty region is updated, thereby reducing the amount of data updated.
Optionally, the dirty region is a minimum bounding rectangle region of the new handwriting segment.
Before highlighting part of the track updated by the contact in the display area corresponding to the writing track, the method further comprises the following steps: and displaying the minimum circumscribed area of the writing track, and determining the minimum circumscribed area as a display area.
When writing, the edges of the real tracks of most writing tracks are quite uneven, and when operation and processing are carried out, the minimum external connection area corresponding to the writing tracks is selected as the display area of the writing tracks.
Example four
According to a fourth embodiment of the present invention, an embodiment of a highlight pen processing method is provided, and fig. 4 is a flowchart of a highlight pen processing method according to the fourth embodiment of the present invention; as shown in fig. 4, it should be noted that, in this embodiment, a detailed refinement is performed on the basis of the second embodiment, where the writing trajectory is a plurality of single-touch writing trajectories written by a plurality of touch points, and in response to the refresh operation performed on the cache area having the writing trajectory, displaying the writing trajectory of the cache area includes:
step S402, responding to the single-contact writing operation performed in the cache region, and determining the single-contact writing tracks corresponding to the single-contact writing operation to be displayed on the cache bitmap of the cache region, wherein the cache bitmap is a cache layer of the cache region through which each single-contact writing track passes, and the cache region comprises one or more cache bitmaps;
and step S404, responding to the refreshing operation of the cache region with the writing tracks, and displaying a plurality of single-contact writing tracks, wherein the ink marks of the overlapped parts of different single-contact writing tracks are deepened.
When the multi-finger writing operation is performed, in the related art, a plurality of contacts which are written simultaneously are usually placed in different bitmaps respectively, and after writing is finished, a plurality of different bitmaps can be selected to be combined, so that a plurality of tracks written by a plurality of pens are combined, and the operation amount is large, and the operation time is long. In this embodiment, the above-described single-touch processing method is used to process the trajectories of the multiple different bitmaps, thereby increasing the processing speed of the multiple different bitmaps for each touch. And combining the bitmaps corresponding to the multiple single-touch points, wherein the bitmaps are cache writing results of each area of a cache layer in each single-stroke writing process, and the overlapping parts of writing tracks of different bitmaps can be not overlapped when different bitmaps are combined, so that the data volume can be combined less.
Optionally, determining that what needs to be displayed is on the cache bitmap in the cache region, where a single-touch writing track corresponding to the single-touch writing operation includes: in response to a single-touch write operation by a cache region, a bitmap is assigned to the cache region through which each single-touch write trace passes.
EXAMPLE five
According to a fifth embodiment of the present invention, an embodiment of a highlighting pen display method is provided, and as a preferred embodiment of the present embodiment, a highlighting pen display method is described in detail below.
When a highlight pen track of the electronic whiteboard is displayed, the Path class of the Android SDK is used in the related technology, the writing track of a single finger is recorded, and all writing tracks are combined and spliced every time refreshing is carried out. Such a realization is inefficient, and a stuck phenomenon is easily generated when a plurality of fingers write or a single finger writes in a large range for a long time. The preferred embodiment provides a highlighting pen display method. The ink marks of the highlight pen are divided according to the areas, a plurality of bitmaps with transparency are used for caching the multi-finger writing results, and the writing smoothness is also realized on a normally configured whole machine by combining partial refreshing of dirty areas.
The key points of the preferred embodiment are as follows:
firstly, dividing ink marks according to areas; taking the example of writing long ink with a single finger, if only a single Path is used to buffer the whole Path, the longer the writing length is, the longer the drawing time is. In fact, the rendering result of the previously drawn partial area is reusable. The current optimization scheme is to divide the screen into M × N regions, assign ink to the corresponding region each time writing occurs, and update only the affected regions each time refreshing occurs.
Secondly, distinguishing a persistent layer and a cache layer; one of the optimization means is to distinguish between the persistence layer and the buffer layer because the new and old ink traces of the highlighting pen deepen when they overlap. The cache layer stores the drawing result written once, the persistent layer contains the drawing result of all ink marks, the two layers of bitmaps are attached to the persistent layer after the hands are lifted, and the overlapping effect of new and old handwriting can be achieved.
Thirdly, caching multi-finger writing by using a multilayer bitmap; when the highlight pen is used for multi-finger writing, the color of the overlapped part of the ink marks is deepened; but the ink written by each touch point does not intersect with the ink and can not be overlapped and deepened. In order to simulate the effect, when the current optimization scheme is that the highlighting pen writes, each area of each touch point is allocated with a bitmap to cache the writing result, and the display result of the area is obtained after a plurality of bitmaps are superposed. The bitmaps can be distributed according to needs, and are distributed only when writing is carried out, and the bitmaps distributed before are recycled after the touch point finishes writing.
Fourthly, refreshing a dirty area locally; although the divided regions of the path are updated and then multi-layer cache optimization is applied during each writing, relatively good operation efficiency can be obtained. In fact, the minimum circumscribed area of the ink is calculated by using Path, and the minimum circumscribed area intersects with the Path dividing area, so that a smaller redrawing area can be obtained. Although relatively good operating efficiency can be obtained after the above optimization means are adopted. In fact, for each small area, only the dirty regions of the respective new ink need to be concerned. A smaller redrawn area may be derived from the minimum circumscribed area of the new ink.
EXAMPLE six
According to a sixth embodiment of the present invention, there is provided an apparatus embodiment of a highlight pen processing apparatus, and fig. 5 is a schematic structural diagram of a highlight pen processing apparatus according to the sixth embodiment of the present invention, and as shown in fig. 5, the highlight pen processing apparatus 50 includes: a first display module 52, a second display module 54, and a third display module 56. The highlight pen processing device 50 will be described in detail below.
A first display module 52 for displaying the writing trace of the existing highlight pen on the persistence layer; a second display module 54, connected to the first display module 52, for responding to the writing operation of the highlighting pen on the electronic whiteboard, and displaying writing tracks corresponding to the writing operation in a plurality of buffer areas divided on the buffer layer; and a third display module 56, connected to the second display module 54, for displaying the combined writing track of the persistence layer and the buffer layer in response to the completion of the writing operation.
By the device, the writing track of the existing highlighting pen is displayed on the lasting layer by adopting the first display module 52; the second display module 54 responds to the writing operation of the highlight pen on the electronic whiteboard, and displays writing tracks corresponding to the writing operation on a plurality of cache areas divided on the cache layer respectively; the third display module 56 displays the writing trace of the contact of the highlight pen by responding to the writing operation of the highlight pen on the electronic whiteboard in a manner of displaying the writing trace after the combination of the persistence layer and the buffer layer in response to the completion of the writing operation; in the display area that the writing orbit corresponds, highlight the partial orbit that the contact was updated, wherein, electronic whiteboard's screen divides into a plurality of display areas, and write the orbit of the highlight pen that has write and this writing operation's orbit through persistence layer and buffer layer respectively storage, the mesh of going on updating to the division region that changes has been reached, thereby realized reducing and occupied system resource, raise the efficiency, and be difficult to take place the technological effect that the card is pause, and then it is great to have solved the processing method among the correlation technique and occupied system resource, low efficiency, and when writing in the long-time large scale of multi-finger writing or single finger, the technical problem of the very easy card pause phenomenon that takes place.
EXAMPLE seven
According to a seventh embodiment of the present invention, there is provided a processor, configured to execute a program, where the program executes a highlight pen processing method, including: displaying the writing track of the existing highlight pen on the lasting layer; responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; and responding to the completion of the writing operation, and displaying the combined writing track of the persistence layer and the cache layer.
Optionally, in response to the writing operation of the highlight pen, displaying, in a plurality of buffer areas divided on the buffer layer, writing tracks corresponding to the writing operation respectively includes: judging whether a writing track exists in the cache region; and displaying the writing track of the cache region in response to the refreshing operation performed on the cache region with the writing track.
Optionally, the writing track is a single-contact writing track, the writing track is divided into a plurality of handwriting sections, and in response to a refresh operation performed on a cache area with the writing track, displaying the writing track of the cache area includes: responding to the writing operation performed in the cache area, determining that all handwriting sections are required to be displayed in the cache area, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; and responding to the refreshing operation performed in the cache area, and displaying all handwriting sections in the cache area.
Optionally, before the refreshing operation performed in response to the cache area, displaying all handwriting segments in the cache area includes: judging whether the handwriting sections in the cache area are overlapped; determining a dirty area of the cache area under the condition that the cache area has overlapped handwriting sections, wherein the dirty area is the minimum external area of a new handwriting section, and the new handwriting section is the last written handwriting section in a plurality of handwriting sections overlapped in the cache area; and responding to the refreshing operation performed by the cache area, refreshing the dirty area, and displaying all handwriting sections of the cache area.
Optionally, the dirty region is a minimum bounding rectangle region of the new handwriting segment.
Optionally, the writing track is a plurality of single-contact writing tracks written by a plurality of contacts, and in response to the refresh operation performed on the cache region having the writing track, displaying the writing track of the cache region includes: responding to single-contact writing operation performed in a cache region, and determining single-contact writing tracks which need to be displayed and correspond to the single-contact writing operation on a cache bitmap of the cache region, wherein the cache bitmap is a cache layer of the cache region through which each single-contact writing track passes, and the cache region comprises one or more cache bitmaps; and displaying a plurality of single-contact writing tracks in response to the refreshing operation performed on the cache region with the writing tracks, wherein the ink marks of the overlapped parts of different single-contact writing tracks are deepened.
Optionally, determining, on the cache bitmap in the cache region, a single-touch writing track corresponding to the single-touch writing operation, which needs to be displayed, includes: in response to a single-touch write operation by a cache region, a bitmap is assigned to the cache region through which each single-touch write trace passes.
Example eight
According to an eighth embodiment of the present invention, there is provided a storage medium including a stored program, wherein when the program runs, a device on which the storage medium is controlled to execute a highlight pen processing method, the method includes: displaying the writing track of the existing highlight pen on the lasting layer; responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer; and responding to the completion of the writing operation, and displaying the combined writing track of the persistence layer and the cache layer.
Optionally, in response to the writing operation of the highlight pen, displaying, in a plurality of buffer areas divided on the buffer layer, writing tracks corresponding to the writing operation respectively includes: judging whether a writing track exists in the cache region; and displaying the writing track of the cache region in response to the refreshing operation performed on the cache region with the writing track.
Optionally, the writing track is a single-contact writing track, the writing track is divided into a plurality of handwriting sections, and in response to a refresh operation performed on a cache area with the writing track, displaying the writing track of the cache area includes: responding to the writing operation performed in the cache area, determining that all handwriting sections are required to be displayed in the cache area, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; and responding to the refreshing operation performed in the cache area, and displaying all handwriting sections in the cache area.
Optionally, before the refreshing operation performed in response to the cache area, displaying all handwriting segments in the cache area includes: judging whether the handwriting sections in the cache area are overlapped; determining a dirty area of the cache area under the condition that the cache area has overlapped handwriting sections, wherein the dirty area is the minimum external area of a new handwriting section, and the new handwriting section is the last written handwriting section in a plurality of handwriting sections overlapped in the cache area; and responding to the refreshing operation performed by the cache area, refreshing the dirty area, and displaying all handwriting sections of the cache area.
Optionally, the dirty region is a minimum bounding rectangle region of the new handwriting segment.
Optionally, the writing track is a plurality of single-contact writing tracks written by a plurality of contacts, and in response to the refresh operation performed on the cache region having the writing track, displaying the writing track of the cache region includes: responding to single-contact writing operation performed in a cache region, and determining single-contact writing tracks which need to be displayed and correspond to the single-contact writing operation on a cache bitmap of the cache region, wherein the cache bitmap is a cache layer of the cache region through which each single-contact writing track passes, and the cache region comprises one or more cache bitmaps; and displaying a plurality of single-contact writing tracks in response to the refreshing operation performed on the cache region with the writing tracks, wherein the ink marks of the overlapped parts of different single-contact writing tracks are deepened.
Optionally, determining, on the cache bitmap in the cache region, a single-touch writing track corresponding to the single-touch writing operation, which needs to be displayed, includes: in response to a single-touch write operation by a cache region, a bitmap is assigned to the cache region through which each single-touch write trace passes.
Example nine
According to a ninth embodiment of the present invention, there is provided an electronic whiteboard, including: the display device comprises a storage medium, a processor and a display, wherein the storage medium stores a program; and the processor is used for running the program stored in the storage medium to control the display to execute any one of the highlight pen processing methods.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the annotation display method according to any embodiment of the present invention.
It should be noted that, in the annotation display device, each unit and each module included in the annotation display device are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof.
In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A highlight pen processing method, comprising:
displaying the writing track of the existing highlight pen on the lasting layer;
responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer;
in response to the completion of the writing operation, displaying a writing track after the combination of the persistence layer and the cache layer;
responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer comprises: judging whether a writing track exists in the cache region; under the condition that a writing track exists in the cache region, responding to the refreshing operation of the cache region with the writing track, and displaying the writing track of the cache region;
the writing track is a single-contact writing track, the writing track corresponding to the writing operation is divided into a plurality of handwriting sections, and the writing track of the cache area is displayed by responding to the refreshing operation of the cache area with the writing track, wherein the refreshing operation comprises the following steps: responding to the writing operation performed in the cache area, and determining that all handwriting sections of the cache area need to be displayed, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; responding to the refreshing operation carried out in the cache area, and displaying all handwriting sections in the cache area;
before the refreshing operation performed in response to the cache area, displaying all handwriting sections in the cache area comprises: judging whether the handwriting sections in the cache area are overlapped; determining a dirty area of the cache area under the condition that the cache area has overlapped handwriting sections, wherein the dirty area is a minimum external area of a new handwriting section, and the new handwriting section is a last written handwriting section in a plurality of handwriting sections overlapped in the cache area; and responding to the refreshing operation performed by the cache area, refreshing the dirty area, and displaying all handwriting sections of the cache area.
2. The method of claim 1, wherein the dirty region is a minimum bounding rectangular region of the new trace segment.
3. The method of claim 1, wherein the writing traces corresponding to the writing operation are a plurality of single-contact writing traces written by a plurality of contacts, and displaying the writing traces of the buffer area in response to the refreshing operation performed on the buffer area with the writing traces comprises:
responding to single-contact writing operation performed in a cache region, and determining single-contact writing tracks corresponding to the single-contact writing operation to be displayed on a cache bitmap of the cache region, wherein the cache bitmap is a cache layer of the cache region through which each single-contact writing track passes, and the cache region comprises one or more cache bitmaps;
and displaying the plurality of single-contact writing tracks in response to a refreshing operation performed on the cache region with the writing tracks, wherein the ink marks of the overlapped parts of different single-contact writing tracks are deepened.
4. The method of claim 3, wherein determining, on the buffer bitmap of the buffer area, that a single-touch writing trace corresponding to the single-touch writing operation needs to be displayed comprises:
in response to a single-touch write operation by a cache region, a bitmap is assigned to the cache region through which each single-touch write trace passes.
5. A highlighter processing apparatus, comprising:
the first display module is used for displaying the writing track of the existing highlight pen on the persistence layer;
the second display module is used for responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer;
the third display module is used for responding to the completion of the writing operation and displaying the combined writing track of the persistence layer and the cache layer;
responding to the writing operation of the highlight pen, and respectively displaying writing tracks corresponding to the writing operation in a plurality of cache areas divided on a cache layer comprises: judging whether a writing track exists in the cache region; under the condition that a writing track exists in the cache region, responding to the refreshing operation of the cache region with the writing track, and displaying the writing track of the cache region;
the writing track is a single-contact writing track, the writing track corresponding to the writing operation is divided into a plurality of handwriting sections, and the writing track of the cache area is displayed by responding to the refreshing operation of the cache area with the writing track, wherein the refreshing operation comprises the following steps: responding to the writing operation performed in the cache area, and determining that all handwriting sections of the cache area need to be displayed, wherein the handwriting sections comprise a complete handwriting section and a partial handwriting section in the cache area; responding to the refreshing operation carried out in the cache area, and displaying all handwriting sections in the cache area;
before the refreshing operation performed in response to the cache area, displaying all handwriting sections in the cache area comprises: judging whether the handwriting sections in the cache area are overlapped; determining a dirty area of the cache area under the condition that the cache area has overlapped handwriting sections, wherein the dirty area is a minimum external area of a new handwriting section, and the new handwriting section is a last written handwriting section in a plurality of handwriting sections overlapped in the cache area; and responding to the refreshing operation performed by the cache area, refreshing the dirty area, and displaying all handwriting sections of the cache area.
6. A storage medium comprising a stored program, wherein the program, when executed, controls an apparatus in which the storage medium is located to perform the highlighter processing method according to any one of claims 1 to 4.
7. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the highlighter processing method of any of claims 1 to 4.
8. An electronic whiteboard, comprising: a storage medium, a processor, and a display, wherein,
the storage medium stores a program;
the processor is used for operating the program stored in the storage medium to control the display to execute the highlight pen processing method in any one of claims 1 to 4.
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| CN112732155B (en) * | 2020-12-30 | 2022-08-16 | 新东方教育科技集团有限公司 | Image display method, image display device, electronic apparatus, and storage medium |
| CN114237430A (en) * | 2021-12-01 | 2022-03-25 | 安徽淘云科技股份有限公司 | Writing track display method, device, system, electronic equipment and storage medium |
| CN114546173A (en) * | 2022-02-28 | 2022-05-27 | 长沙朗源电子科技有限公司 | Electronic whiteboard, writing acceleration method and system thereof, and storage medium |
| CN115079869B (en) * | 2022-08-16 | 2022-12-09 | 长沙朗源电子科技有限公司 | Rendering method and device of electronic whiteboard |
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