CN117369665A - Electronic paper handwriting display method, device, equipment and storage medium - Google Patents
Electronic paper handwriting display method, device, equipment and storage medium Download PDFInfo
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- CN117369665A CN117369665A CN202311337262.2A CN202311337262A CN117369665A CN 117369665 A CN117369665 A CN 117369665A CN 202311337262 A CN202311337262 A CN 202311337262A CN 117369665 A CN117369665 A CN 117369665A
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- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000003094 microcapsule Substances 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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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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Abstract
The invention discloses a handwriting display method, device and equipment for electronic paper and a storage medium, and belongs to the technical field of computers. The method comprises the following steps: tracking and detecting the position of the handwriting pen on the electronic paper, and acquiring handwriting updating coordinate data; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method, an apparatus, a device, and a storage medium for displaying handwriting of electronic paper.
Background
The electronic paper is a paper-like display screen, and is composed of microcapsules with bistable properties, each microcapsule contains a plurality of pigment particles with different colors and different charges, when an electric field is applied, the pigment particles with the same charges move upwards along with the direction of the electric field, the direction of the electric field can be changed to change the microcapsules to display different colors, and a plurality of microcapsules can be combined together to display different patterns.
Because of the characteristics of paper-like display effect and non-vanishing power-down display content, electronic paper is widely applied to electronic equipment such as electronic book readers and intelligent office books, the traditional basic function only supporting page turning and reading cannot meet the requirements of users, and more users install third-party handwriting application software on the equipment for carrying out operations such as notes, drawing and the like. However, compared with the traditional liquid crystal display device, the electronic paper has the defect of low refresh frame rate, so that the handwriting data display effect of the third-party handwriting application is not Chang Kadu smooth.
In order to solve the problem, the handwriting drawing information is acquired by the existing equipment manufacturers, and then handwriting refreshing is preferentially performed on the fitting handwriting data to improve the handwriting speed. The method can solve the problem of handwriting clamping, but introduces a new problem, other interface contents cannot be updated while handwriting is fast, and other interface contents refresh stagnation is caused when handwriting.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for displaying handwriting of electronic paper, and aims to solve the problem of interface update stagnation during handwriting display jamming or handwriting.
In order to achieve the above object, the present invention provides an electronic paper handwriting display method, which includes the following steps:
tracking and detecting the position of the handwriting pen on the electronic paper, and acquiring handwriting updating coordinate data;
updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
Optionally, before the step of tracking and detecting the position of the handwriting pen on the electronic paper and obtaining handwriting update coordinate data, the method further includes:
acquiring a first top-level window name to be matched;
judging whether the first top-level window name to be matched is matched with a preset configuration file, wherein a third-party handwriting application interface name is stored in the configuration file in advance;
If the first top-level window name to be matched is matched with a preset configuration file, judging whether the handwriting pen is detected to be close to or in contact with the electronic paper;
and if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to a quick handwriting state, and creating the mirror image interface.
Optionally, if the stylus pen is detected to be close to or in contact with the electronic paper, the step of switching to a fast handwriting state and creating the mirror image interface includes:
if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to the rapid handwriting state, and creating a blank interface;
acquiring content data of a current electronic paper interface through a preset remote calling interface;
and writing the content data of the current electronic paper interface into a blank interface to obtain the mirror image interface.
Optionally, the step of updating the coordinate data according to the handwriting, and obtaining the simulated handwriting data and the handwriting area through a mirror image interface created in advance includes:
updating coordinate data according to the handwriting, and drawing on the mirror image interface to obtain the simulated handwriting data;
based on a preset local area calculation algorithm, the handwriting area is calculated according to the handwriting updating coordinate data and the pre-acquired stroke size data.
Optionally, the step of updating the coordinate data according to the handwriting, and obtaining the simulated handwriting data and the handwriting area through a mirror image interface created in advance further includes:
receiving an electronic paper interface updating instruction;
based on an electronic paper interface updating instruction, obtaining an area without handwriting according to the electronic paper interface and the handwriting area;
and based on the local refreshing algorithm, according to the electronic paper interface updating instruction, carrying out display refreshing on the non-handwritten area.
Optionally, after the step of submitting the simulated handwriting data and the handwriting area to display based on the preset local refreshing algorithm to obtain the handwriting display result of the electronic paper, the method further includes:
acquiring a second top-level window name to be matched;
judging whether the second top-level window name to be matched is matched with the configuration file or not;
and if the second top-level window name to be matched is not matched with the configuration file, removing the mirror image interface and refreshing the electronic paper interface.
Optionally, after the step of submitting the simulated handwriting data and the handwriting area to display based on the preset local refreshing algorithm to obtain the handwriting display result of the electronic paper, the method further includes:
And when the handwriting pen is detected to be lifted up on the electronic paper, removing the mirror image interface and refreshing the electronic paper interface.
In addition, in order to achieve the above object, the present invention also provides an electronic paper handwriting display device, including:
the data acquisition module is used for tracking and detecting the position of the handwriting pen on the electronic paper and acquiring handwriting updating coordinate data;
the handwriting generating module is used for updating coordinate data according to the handwriting, acquiring simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and the handwriting display module is used for submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
The embodiment of the invention also provides a terminal device which comprises a memory, a processor and an electronic paper handwriting display program which is stored in the memory and can run on the processor, wherein the electronic paper handwriting display program realizes the steps of the electronic paper handwriting display method when being executed by the processor.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium is stored with an electronic paper handwriting display program, and the electronic paper handwriting display program realizes the steps of the electronic paper handwriting display method when being executed by a processor.
According to the electronic paper handwriting display method, device, equipment and storage medium, handwriting updating coordinate data are obtained through tracking and detecting the position of a handwriting pen on electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Drawings
FIG. 1 is a schematic diagram of functional modules of a terminal device to which an electronic paper handwriting display device of the present invention belongs;
FIG. 2 is a flowchart of a first exemplary embodiment of a method for handwriting display on electronic paper according to the present invention;
FIG. 3 is a flowchart of a second exemplary embodiment of an electronic paper handwriting display method of the present invention;
FIG. 4 is a flowchart of a third exemplary embodiment of a method for handwriting display on electronic paper according to the present invention;
FIG. 5 is a flowchart of a fourth exemplary embodiment of a method for handwriting display on electronic paper according to the present invention;
FIG. 6 is a flowchart of a fifth exemplary embodiment of a handwriting display method of electronic paper according to the present invention;
FIG. 7 is a flowchart of a sixth exemplary embodiment of an electronic paper handwriting display method of the present invention;
FIG. 8 is a flowchart of a seventh exemplary embodiment of an electronic paper handwriting display method of the present invention;
FIG. 9 is a schematic overall flow chart of another exemplary embodiment of a handwriting display method for electronic paper.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The main solutions of the embodiments of the present invention are: tracking and detecting the position of the handwriting pen on the electronic paper, and acquiring handwriting updating coordinate data; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
The embodiment of the invention considers that the handwriting drawing information is acquired by the related technical scheme, and then the handwriting speed is improved by generating the fitting handwriting to carry out handwriting refreshing preferentially.
Based on the above, the embodiment of the invention provides a solution, which utilizes the characteristic of quick local parallel refreshing of the electronic paper, adopts a mirror image interface local refreshing mode, can realize smooth handwriting on the electronic paper, solves the technical problem that handwriting of a third party is not smooth due to the application of handwriting and blocking, further solves the defect that other contents of the interface cannot be updated while quick handwriting, and improves the handwriting speed on the electronic paper.
The electronic paper has the characteristics of slow whole screen refreshing and fast local parallel refreshing. Then only the rectangular area updated each time of handwriting is known, and each small rectangular area is continuously submitted to be locally refreshed during handwriting, so that the handwriting display speed can be improved. Since the handwriting of the third-party handwriting application is generally gray or colored, if the handwriting is directly submitted, the refreshing time of a single small rectangular area is reduced, in order to further improve the refreshing speed of the handwriting, a mirror image interface with the same content as the current interface is created, the mirror image interface draws the simulated handwriting without gray by monitoring the input information of the handwriting pen, the updating area of the simulated handwriting is calculated by the coordinate information of the handwriting pen, and finally the simulated handwriting data and the updating area are submitted and displayed in a local refreshing mode. With the movement and the cyclic execution of the handwriting pen, the user can experience smooth handwriting effect.
Because the handwriting uses a local parallel refreshing mode, refreshing can be submitted simultaneously when the system interface is updated. Since the handwriting refresh rate is slowed down when the refresh area overlaps with the handwriting refresh area, only the non-overlapping area is refreshed here. And after handwriting is stopped, updating all contents of the current system interface to the latest.
In consideration of convenience of user operation, the user needs to automatically enter a fast handwriting state after entering a handwriting interface of a third party application. The method comprises the steps of writing the appointed handwriting window name into a system configuration file in advance, acquiring the top window name when a system task stack changes, matching with the configuration file, and successfully describing that the handwriting interface is entered. At this time, the quick handwriting state is automatically entered when the pen is down.
Specifically, referring to fig. 1, fig. 1 is a schematic diagram of a functional board of a terminal device to which the electronic paper handwriting display device of the present invention belongs. The electronic paper handwriting display device can be independent of a device of the terminal equipment, capable of displaying the electronic paper handwriting, and can be carried on the terminal equipment in a form of hardware or software. The terminal equipment can be intelligent mobile equipment with a data processing function such as a mobile phone and a tablet personal computer, and can also be fixed terminal equipment or a server with a data processing function.
In this embodiment, the terminal device of the electronic paper handwriting display device at least includes an output module 110, a processor 120, a memory 130 and a communication module 140.
The memory 130 stores an operating system and an electronic paper handwriting display program, and the electronic paper handwriting display device can acquire handwriting update coordinate data by tracking and detecting the position of a handwriting pen on electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. Generating simulated handwriting data through the electronic paper handwriting display program, obtaining information such as an electronic paper handwriting display result and the like, and storing the information in the memory 130; the output module 110 may be a display screen or the like. The communication module 140 may include a WIFI module, a mobile communication module, a bluetooth module, and the like, and communicates with an external device or a server through the communication module 140.
Wherein the electronic paper handwriting display program in the memory 130, when executed by the processor, performs the steps of:
Tracking and detecting the position of the handwriting pen on the electronic paper, and acquiring handwriting updating coordinate data;
updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
acquiring a first top-level window name to be matched;
judging whether the first top-level window name to be matched is matched with a preset configuration file, wherein a third-party handwriting application interface name is stored in the configuration file in advance;
if the first top-level window name to be matched is matched with a preset configuration file, judging whether the handwriting pen is detected to be close to or in contact with the electronic paper;
and if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to a quick handwriting state, and creating the mirror image interface.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
If the handwriting pen is detected to be close to or in contact with the electronic paper, switching to the rapid handwriting state, and creating a blank interface;
acquiring content data of a current electronic paper interface through a preset remote calling interface;
and writing the content data of the current electronic paper interface into a blank interface to obtain the mirror image interface.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
updating coordinate data according to the handwriting, and drawing on the mirror image interface to obtain the simulated handwriting data;
based on a preset local area calculation algorithm, the handwriting area is calculated according to the handwriting updating coordinate data and the pre-acquired stroke size data.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
receiving an electronic paper interface updating instruction;
based on an electronic paper interface updating instruction, obtaining an area without handwriting according to the electronic paper interface and the handwriting area;
and based on the local refreshing algorithm, according to the electronic paper interface updating instruction, carrying out display refreshing on the non-handwritten area.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
acquiring a second top-level window name to be matched;
judging whether the second top-level window name to be matched is matched with the configuration file or not;
and if the second top-level window name to be matched is not matched with the configuration file, removing the mirror image interface and refreshing the electronic paper interface.
Further, the electronic paper handwriting display program in the memory 130, when executed by the processor, further implements the following steps:
and when the handwriting pen is detected to be lifted up on the electronic paper, removing the mirror image interface and refreshing the electronic paper interface.
According to the embodiment, through the scheme, handwriting updating coordinate data are obtained by tracking and detecting the position of the handwriting pen on the electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
The method embodiment of the invention is proposed based on the above-mentioned terminal equipment architecture but not limited to the above-mentioned architecture.
Referring to fig. 2, fig. 2 is a flowchart illustrating a first exemplary embodiment of a handwriting display method for electronic paper according to the present invention. The electronic paper handwriting display method comprises the following steps:
step S101, tracking and detecting the position of a handwriting pen on electronic paper, and acquiring handwriting updating coordinate data;
the main execution body of the method of the embodiment is an electronic paper handwriting display service system, an electronic paper handwriting display device or an electronic paper handwriting display equipment, and the embodiment takes the electronic paper handwriting display device as an example, and the electronic paper handwriting display device can be integrated on the equipment with a data processing function.
In order to solve the problem of interface update stagnation in the current handwriting display and the handwriting, it is important to improve the handwriting speed while not influencing the interface update, and in order to improve the handwriting speed on the electronic paper and realize the parallel update of the interface, the following steps are adopted:
firstly, a special electronic paper handwriting display device is arranged and integrated on equipment with a data processing function, and handwriting can be displayed on electronic paper through the electronic paper handwriting display device;
Finally, through the electronic paper handwriting display device, the position of the handwriting pen on the electronic paper is tracked in real time according to continuous position coordinate data by using a tracking detection algorithm, handwriting updating coordinate data are obtained, a Kalman filter, bezier curve fitting and the like can be used for a common tracking detection algorithm, and the algorithms can help to smooth and predict the track of the handwriting pen and improve the accuracy and fluency of handwriting.
Step S102, updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
the electronic paper handwriting display device updates coordinate data according to handwriting, and obtains simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content, and the electronic paper handwriting display device is realized by adopting the following steps:
firstly, an electronic paper handwriting display device updates coordinate data by handwriting, and simulates handwriting effect on a pre-established mirror image interface to obtain simulated handwriting data, wherein the specific implementation method comprises the steps of converting the handwriting data into drawing instructions, drawing operation on the mirror image interface, or displaying a virtual handwriting track on the mirror image interface, simulating the track and speed of a handwriting pen, and the like, wherein the simulated handwriting data can contain information such as a starting point, an ending point, a pressure value and the like of the stroke, the mirror image interface and the current electronic paper interface have the same content, and are actually invisible memory space on a display screen and are only used for simulating drawing and submitting of the handwriting;
Finally, the electronic paper handwriting display device calculates and obtains a handwriting area according to handwriting updating coordinate data and pre-acquired stroke size data, wherein the handwriting area is generally a rectangle and is used for marking the position and the size of the handwriting area, the updating area is calculated while handwriting is drawn, and the drawn small handwriting content and the corresponding updating area are continuously submitted to the electronic paper display screen for refreshing along with the movement of a pen.
And step S103, submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm, and obtaining an electronic paper handwriting display result.
The electronic paper handwriting display device submits the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result, and the electronic paper handwriting display device is realized by adopting the following steps:
firstly, the electronic paper handwriting display device displays corresponding positions on electronic paper according to the positions and the sizes of handwriting areas, and specific implementation modes can be different from equipment to equipment and platform, and drawing operations can be performed by using a graphic library, a drawing API (application program interface) and the like;
finally, the electronic paper handwriting display device uses a preset local refreshing algorithm to update only the area needing to be updated, so that the display efficiency and the response speed are improved, and the electronic paper handwriting display result is obtained.
According to the embodiment, through the scheme, handwriting updating coordinate data are obtained by tracking and detecting the position of the handwriting pen on the electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
Referring to fig. 3, fig. 3 is a flowchart illustrating a second exemplary embodiment of the electronic paper handwriting display method according to the present invention.
Based on the first exemplary embodiment, the step S101 is further performed to track and detect the position of the handwriting pen on the electronic paper, and before obtaining the handwriting update coordinate data, the step S further includes:
step S001, obtaining a first top-level window name to be matched;
Step S002, judging whether the first top-level window name to be matched is matched with a preset configuration file, wherein the third-party handwriting application interface name is prestored in the configuration file;
step S003, if the first top window name to be matched is matched with a preset configuration file, judging whether the handwriting pen is detected to be close to or in contact with the electronic paper;
step S004, if the stylus pen is detected to be close to or in contact with the electronic paper, switching to a quick handwriting state, and creating the mirror image interface.
Specifically, the electronic paper handwriting display device creates a mirror image interface according to the first top window name to be matched, and the method is realized by the following steps:
firstly, the electronic paper handwriting display device acquires a first top-level window name to be matched, for example, if the electronic paper handwriting display device is provided with an Android system, the first top-level window name to be matched can be acquired through a task stack change of a task stack monitoring system of an actigityManager;
and secondly, the electronic paper handwriting display device uses a corresponding API or code to read a preset configuration file, obtains the name of a third-party handwriting application interface stored in the configuration file, compares the name of the first top-level window to be matched with the name of the third-party handwriting application interface stored in the configuration file in advance, and considers that the current running application program is the target application program if the first top-level window name to be matched with the name of the third-party handwriting application interface stored in the configuration file is matched with the name of the third-party handwriting application interface, and considers that the current running application program is not the target application program if the first top-level window name is not matched with the name of the third-party handwriting application interface stored in the configuration file. The configuration file can be an xml configuration file, configuration information in the xml configuration file is read for matching when the window is changed, the xml configuration file can be updated through a network after equipment is connected, and a user does not need additional operation in the whole process;
Then, after judging that the first top window name to be matched is matched with a preset configuration file, the electronic paper handwriting display device monitors input equipment (such as a touch screen, a digital tablet and the like) related to handwriting pen input by using an appropriate API or library function, monitors events on the input device in real time, including that the handwriting pen contacts electronic paper, leaves the electronic paper and the like, updates the detection state of the handwriting pen according to the type of the input event, and sets a flag bit to indicate that the handwriting pen contacts the electronic paper if the handwriting pen is detected; if the handwriting pen is detected to leave the electronic paper, setting the flag bit to indicate that the handwriting pen is not detected, judging whether the handwriting pen is detected to be close to or contact the electronic paper according to the value of the flag bit, and returning a Boolean value or other data types representing results according to requirements;
finally, after the approach or contact of the handwriting pen with the electronic paper is detected, the electronic paper handwriting display device is switched to a quick handwriting state, a new window is created according to preset parameters to serve as a mirror image interface, namely, two conditions are required to be met when the handwriting pen enters the quick handwriting state, firstly, the window is successfully matched with the configuration file, and secondly, a pen-down event of the handwriting pen is detected.
According to the scheme, the first top-level window name to be matched is obtained; judging whether the first top-level window name to be matched is matched with a preset configuration file, wherein a third-party handwriting application interface name is stored in the configuration file in advance; if the first top-level window name to be matched is matched with a preset configuration file, judging whether the handwriting pen is detected to be close to or in contact with the electronic paper; and if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to a quick handwriting state, and creating the mirror image interface. By acquiring the first top-level window name to be matched, a mirror interface is created. Therefore, a quick handwriting state is entered, a mirror image interface is obtained, and support is provided for obtaining simulated handwriting data and handwriting areas.
Referring to fig. 4, fig. 4 is a flowchart illustrating a third exemplary embodiment of the electronic paper handwriting display method according to the present invention.
Based on the above second exemplary embodiment, step S004, if it is detected that the handwriting pen is close to or contacts the electronic paper, switching to the fast handwriting state and creating the mirror interface may include:
step S0041, if the approach or contact of the handwriting pen with the electronic paper is detected, switching to the rapid handwriting state, and creating a blank interface;
Step S0042, obtaining the content data of the current electronic paper interface through a preset remote calling interface;
and step S0043, writing the content data of the current electronic paper interface into a blank interface to obtain the mirror image interface.
Specifically, the following steps are adopted:
firstly, after detecting that a handwriting pen approaches or contacts electronic paper, switching an electronic paper handwriting display device into a quick handwriting state, and creating a blank interface capable of being drawn according to preset configuration, wherein the blank interface can be created by using a graphic library or a drawing API (application program interface), and can be Canvas of a Canvas consistent with the resolution of a screen;
then, the electronic paper handwriting display device obtains the content data of the current electronic paper interface through a preset remote calling interface, wherein the content data of the current electronic paper interface can be the URL address, binary data stream or other forms of data of an image file;
finally, the electronic paper handwriting display device writes the electronic paper screen content data into the blank interface according to the data format and the requirement of the blank interface to obtain a mirror image interface, for example, the current electronic paper interface content in the surfeflinger is obtained through a system remote call interface and is written into Canvas, and some format conversion and data processing work, such as adjusting the size and the proportion of an image, may need to be carried out in the writing process.
According to the scheme, particularly, if the handwriting pen is detected to be close to or in contact with the electronic paper, the handwriting pen is switched to the rapid handwriting state, and a blank interface is created; acquiring content data of a current electronic paper interface through a preset remote calling interface; and writing the content data of the current electronic paper interface into a blank interface to obtain the mirror image interface. By creating a blank interface and writing the content data of the current electronic paper interface into the blank interface, a mirror image interface is created. Therefore, a quick handwriting state is entered, a mirror image interface is obtained, and support is provided for obtaining simulated handwriting data and handwriting areas.
Referring to fig. 5, fig. 5 is a flowchart illustrating a fourth exemplary embodiment of the electronic paper handwriting display method according to the present invention.
Based on the above first exemplary embodiment, the step S102 updates the coordinate data according to the handwriting, and obtains the simulated handwriting data and the handwriting area through a mirror interface created in advance, where the mirror interface and the current electronic paper interface have the same content and may include:
step S1021, updating coordinate data according to the handwriting, and drawing on the mirror image interface to obtain the simulated handwriting data;
Step S1022, based on a preset local area calculation algorithm, calculating the handwriting area according to the handwriting updating coordinate data and the pre-acquired stroke size data.
Specifically, the electronic paper handwriting display device updates coordinate data according to handwriting, obtains simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, and is realized by adopting the following steps:
firstly, the electronic paper handwriting display device performs drawing on the mirror image interface according to handwriting updating coordinate data, drawing functions provided by blank interface objects such as drawing lines, filling shapes, adding texts and the like can be used to obtain simulated handwriting data, and meanwhile, the simulated handwriting on the mirror image interface is continuously updated along with the updating of the handwriting data. After the coordinate data are updated each time, handwriting can be drawn on a mirror image interface so as to realize a real-time simulation effect;
finally, the electronic paper handwriting display device performs calculation of a handwriting area based on a preset local area calculation algorithm and handwriting updating coordinate data and stroke size data, the algorithm possibly divides continuous handwriting into different areas according to certain rules and conditions so as to determine the boundary of the handwriting area, and draws the handwriting area on a mirror image interface according to the calculated handwriting area, so that drawing functions provided by a blank interface object, such as drawing rectangle, filling color and the like, can be used, and meanwhile, the handwriting area on the mirror image interface is continuously updated along with updating of handwriting data. The handwriting area may be recalculated and rendered after each update of the coordinate data.
According to the scheme, the coordinate data are updated according to the handwriting, and the simulated handwriting data are obtained by drawing on the mirror image interface; based on a preset local area calculation algorithm, the handwriting area is calculated according to the handwriting updating coordinate data and the pre-acquired stroke size data. And updating the coordinate data and the mirror image interface which is created in advance through handwriting to obtain the simulated handwriting data and the handwriting area. Therefore, the simulated handwriting data and the handwriting area are obtained, and support is provided for obtaining the handwriting display result of the electronic paper.
Referring to fig. 6, fig. 6 is a flowchart illustrating a fifth exemplary embodiment of the electronic paper handwriting display method according to the present invention.
Based on the above first exemplary embodiment, the step S102 updates the coordinate data according to the handwriting, and obtains the simulated handwriting data and the handwriting area through a mirror interface created in advance, where after the mirror interface and the current electronic paper interface have the same content, the method may include:
step S1041, receiving an electronic paper interface update instruction;
step S1042, based on the electronic paper interface update instruction, obtaining an area without handwriting according to the electronic paper interface and the handwriting area;
Step S1043, based on the local refreshing algorithm, performing display refreshing on the non-handwriting area according to the electronic paper interface updating instruction.
Specifically, the following steps are adopted:
firstly, an electronic paper handwriting display device receives an electronic paper interface updating instruction;
then, the electronic paper handwriting display device determines an area which is not covered by handwriting according to an electronic paper interface updating instruction, a known electronic paper interface and a known handwriting area by a proper calculation method to obtain an area which is not covered by handwriting, and the area can be realized based on coordinate information of the handwriting area, position dimensions of interface elements and the like;
finally, the electronic paper handwriting display device performs display refreshing on the non-handwriting area according to the electronic paper interface updating instruction based on a local refreshing algorithm, the local refreshing is to refresh only the changed area without re-rendering the whole electronic paper interface, and the local refreshing can be realized by using a related function or method provided by a graphic library or a drawing engine, for example, the updating area of each layer is obtained through a system display frame, one frame may have a plurality of rectangular areas, the rectangular area overlapped with the handwriting area in the mirror image interface is removed, and the remaining non-handwriting area is submitted and displayed in a local refreshing mode.
According to the scheme, the electronic paper interface updating instruction is received; based on an electronic paper interface updating instruction, obtaining an area without handwriting according to the electronic paper interface and the handwriting area; and based on the local refreshing algorithm, according to the electronic paper interface updating instruction, carrying out display refreshing on the non-handwritten area. And refreshing the non-handwritten area through the received electronic paper interface updating instruction. Therefore, the technical problem of interface update stagnation during handwriting is solved, and compared with the prior art, the method has the advantage that the interface can be updated in parallel.
Referring to fig. 7, fig. 7 is a flowchart illustrating a sixth exemplary embodiment of a handwriting display method for electronic paper according to the present invention.
Based on the first exemplary embodiment, step S103 is further performed to submit the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm, and after obtaining the handwriting display result of the electronic paper, the method further includes:
step S1051, obtaining a second top window name to be matched;
step S1052, judging whether the second top window name to be matched is matched with the configuration file;
and step S1053, if the second top window name to be matched is not matched with the configuration file, removing the mirror image interface and refreshing the electronic paper interface.
Specifically, the following steps are adopted:
firstly, the electronic paper handwriting display device acquires a second top-level window name to be matched;
then, the electronic paper handwriting display device uses a corresponding API or code to read a preset configuration file, obtains a third-party handwriting application interface name stored in the configuration file, compares the second top-level window name to be matched with the third-party handwriting application interface name stored in the configuration file in advance, and considers that the current running is a target application program if the second top-level window name to be matched with the third-party handwriting application interface name is matched with the third-party handwriting application interface name, and considers that the current running is not the target application program if the second top-level window name is matched with the third-party handwriting application interface name;
and finally, if the second top-level window name to be matched is not matched with the configuration file, the electronic paper handwriting display device can use a related function or API to remove the mirror image interface, timely recover Canvas resources of Canvas, and remotely call and update the current electronic paper interface through a system to display the latest real interface content.
According to the scheme, the second top-level window name to be matched is obtained; judging whether the second top-level window name to be matched is matched with the configuration file or not; and if the second top-level window name to be matched is not matched with the configuration file, removing the mirror image interface and refreshing the electronic paper interface. And removing the mirror image interface and refreshing the electronic paper interface through the acquired name of the second top-layer window to be matched. Thus, the fast handwriting state is exited, and handwriting on the electronic paper is ended.
Referring to fig. 8, fig. 8 is a flowchart illustrating a seventh exemplary embodiment of a handwriting display method for electronic paper according to the present invention.
The step of submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result further comprises the following steps:
when the handwriting pen is detected to be lifted up on the electronic paper, removing the mirror image interface and refreshing the electronic paper interface
Based on the first exemplary embodiment, the step S103, after submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm, may include:
and step S106, when the fact that the handwriting pen is lifted up on the electronic paper is detected, removing the mirror image interface, and refreshing the electronic paper interface.
Specifically, the following steps are adopted:
firstly, an electronic paper handwriting display device detects the lifting action of a handwriting pen on electronic paper by using a proper sensing technology or algorithm, and whether the handwriting pen is lifted or not can be judged by monitoring the change of the capacitance and electromagnetic parameters of a touch screen;
finally, after the lifting of the handwriting pen is detected, the electronic paper handwriting display device can use a related function or API to remove the mirror image interface, timely recover Canvas resources of Canvas, and update the current electronic paper interface through system remote call to display the latest real interface content.
In addition, the mirror image interface does not influence the input response and the interface drawing of the electronic paper interface, when the simulated handwriting data is submitted and displayed, the third-party handwriting application draws, but filters when submitted, on one hand, the handwriting drawn by the third-party handwriting application just overlaps with the simulated handwriting area of the mirror image interface and cannot be submitted, so that the refresh rate of the mirror image interface handwriting cannot be influenced by the overlapping of the submitted area; on the other hand, the updating of other contents of the electronic paper interface can not overlap with the handwriting area of the mirror image interface, so that the updating submitted by the mirror image interface can not be intercepted, and the aim of synchronously updating other contents during quick handwriting is fulfilled.
According to the scheme, the mirror image interface is removed and the electronic paper interface is refreshed when the fact that the handwriting pen is lifted up on the electronic paper is detected. And the mirror image interface is removed and the electronic paper interface is refreshed through the detection of the lifting action of the handwriting pen. Thus, the fast handwriting state is exited, and handwriting on the electronic paper is ended.
As another exemplary embodiment, the present embodiment may implement handwriting display on electronic paper by using an electronic paper handwriting display device, where a flow of the electronic paper handwriting display method is as shown in fig. 9:
Firstly, the electronic paper handwriting display device confirms that the electronic paper handwriting display device enters a handwriting function interface of third-party software currently through window names in system window information and configuration files;
secondly, before handwriting starts, the electronic paper handwriting display device creates a mirror image interface with the same content as the current system interface according to the current system interface;
then, during handwriting, the electronic paper handwriting display device simultaneously draws handwriting by utilizing a third-party handwriting application of a current system interface and a mirror image interface, the mirror image interface draws simulated handwriting and calculates a handwriting drawing area, the drawn handwriting content is submitted by using a local refreshing mode to refresh rapidly, and the system interface also submits update which is not overlapped with the handwriting area in the local refreshing mode;
and finally, after handwriting is completed, the electronic paper handwriting display device removes the mirror image interface, and immediately updates the current system interface content once, so that the latest content of the system interface is ensured to be displayed on the screen.
According to the embodiment, through the scheme, handwriting updating coordinate data are obtained by tracking and detecting the position of the handwriting pen on the electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. By utilizing the mirror image interface to carry out local refreshing, the handwriting speed on the electronic paper is improved. Therefore, smooth handwriting on the electronic paper is realized, and the technical problem of interface update stagnation during handwriting display blocking or handwriting is solved. Compared with the prior art, the method has the advantages of faster handwriting speed and parallel updating of interfaces.
In addition, the invention also provides an electronic paper handwriting display device, which comprises:
the data acquisition module is used for tracking and detecting the position of the handwriting pen on the electronic paper and acquiring handwriting updating coordinate data;
the handwriting generating module is used for updating coordinate data according to the handwriting, acquiring simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and the handwriting display module is used for submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
The principle of the present embodiment for realizing handwriting display of electronic paper refers to the above embodiments, and will not be described herein.
In addition, the embodiment of the invention also provides a terminal device, which comprises a memory, a processor and an electronic paper handwriting display program stored on the memory and capable of running on the processor, wherein the electronic paper handwriting display program realizes the steps of the electronic paper handwriting display method when being executed by the processor.
Because all the technical schemes of all the embodiments are adopted when the electronic paper handwriting display program is executed by the processor, the electronic paper handwriting display program at least has all the beneficial effects brought by all the technical schemes of all the embodiments, and the description is omitted herein.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium is stored with an electronic paper handwriting display program, and the electronic paper handwriting display program realizes the steps of the electronic paper handwriting display method when being executed by a processor.
Because all the technical schemes of all the embodiments are adopted when the electronic paper handwriting display program is executed by the processor, the electronic paper handwriting display program at least has all the beneficial effects brought by all the technical schemes of all the embodiments and is not described in detail herein.
Compared with the prior art, the electronic paper handwriting display scheme provided by the embodiment of the invention acquires handwriting updating coordinate data by tracking and detecting the position of the handwriting pen on the electronic paper; updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content; and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result. Thus, the problem of interface update stagnation during handwriting display and blockage or handwriting is solved. Based on the scheme of the invention, an electronic paper handwriting display scheme is designed from the problem that handwriting cannot be smoothly performed on electronic paper in the real world or interface update is stopped during handwriting, the effectiveness of the electronic paper handwriting display method is verified in the electronic paper handwriting display result, and finally the handwriting efficiency on the electronic paper is obviously improved through the method.
Compared with the prior art, the embodiment of the invention has the following advantages:
1. the handwriting speed of the third-party handwriting application is improved;
2. other contents of the interface can be updated in parallel while handwriting quickly.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. 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 system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to perform the method of each embodiment of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. The electronic paper handwriting display method is characterized by comprising the following steps of:
tracking and detecting the position of the handwriting pen on the electronic paper, and acquiring handwriting updating coordinate data;
updating coordinate data according to the handwriting, and obtaining simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and submitting the simulated handwriting data and the handwriting area for display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
2. The electronic paper handwriting display method according to claim 1, wherein before the step of tracking and detecting the position of the handwriting pen on the electronic paper and acquiring handwriting update coordinate data, the method further comprises:
acquiring a first top-level window name to be matched;
judging whether the first top-level window name to be matched is matched with a preset configuration file, wherein a third-party handwriting application interface name is stored in the configuration file in advance;
If the first top-level window name to be matched is matched with a preset configuration file, judging whether the handwriting pen is detected to be close to or in contact with the electronic paper;
and if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to a quick handwriting state, and creating the mirror image interface.
3. The electronic paper handwriting display method according to claim 2, wherein the step of switching to a fast handwriting state and creating the mirror interface if the handwriting pen is detected to be close to or in contact with the electronic paper comprises:
if the handwriting pen is detected to be close to or in contact with the electronic paper, switching to the rapid handwriting state, and creating a blank interface;
acquiring content data of a current electronic paper interface through a preset remote calling interface;
and writing the content data of the current electronic paper interface into a blank interface to obtain the mirror image interface.
4. The electronic paper handwriting display method according to claim 1, wherein the step of obtaining simulated handwriting data and handwriting areas through a mirror interface created in advance according to the handwriting update coordinate data comprises:
updating coordinate data according to the handwriting, and drawing on the mirror image interface to obtain the simulated handwriting data;
Based on a preset local area calculation algorithm, the handwriting area is calculated according to the handwriting updating coordinate data and the pre-acquired stroke size data.
5. The electronic paper handwriting display method according to claim 1, wherein the step of obtaining simulated handwriting data and handwriting areas through a mirror image interface created in advance according to the handwriting update coordinate data further comprises:
receiving an electronic paper interface updating instruction;
based on an electronic paper interface updating instruction, obtaining an area without handwriting according to the electronic paper interface and the handwriting area;
and based on the local refreshing algorithm, according to the electronic paper interface updating instruction, carrying out display refreshing on the non-handwritten area.
6. The electronic paper handwriting display method according to claim 2, wherein after the step of submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain the electronic paper handwriting display result, the method further comprises:
acquiring a second top-level window name to be matched;
judging whether the second top-level window name to be matched is matched with the configuration file or not;
and if the second top-level window name to be matched is not matched with the configuration file, removing the mirror image interface and refreshing the electronic paper interface.
7. The electronic paper handwriting display method according to claim 1, wherein after the step of submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain the electronic paper handwriting display result, the method further comprises:
and when the handwriting pen is detected to be lifted up on the electronic paper, removing the mirror image interface and refreshing the electronic paper interface.
8. An electronic paper handwriting display device, characterized in that the electronic paper handwriting display device comprises:
the data acquisition module is used for tracking and detecting the position of the handwriting pen on the electronic paper and acquiring handwriting updating coordinate data;
the handwriting generating module is used for updating coordinate data according to the handwriting, acquiring simulated handwriting data and a handwriting area through a mirror image interface which is created in advance, wherein the mirror image interface and the current electronic paper interface have the same content;
and the handwriting display module is used for submitting the simulated handwriting data and the handwriting area to display based on a preset local refreshing algorithm to obtain an electronic paper handwriting display result.
9. A terminal device comprising a memory, a processor and an electronic paper handwriting display program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the electronic paper handwriting display method of any of claims 1-7.
10. A computer readable storage medium having stored thereon an electronic paper handwriting display program which when executed by a processor implements the steps of the electronic paper handwriting display method of any of claims 1-7.
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