CN115509428A - Free switching method and system for writing and operating states of whiteboard software - Google Patents
Free switching method and system for writing and operating states of whiteboard software Download PDFInfo
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- CN115509428A CN115509428A CN202211038856.9A CN202211038856A CN115509428A CN 115509428 A CN115509428 A CN 115509428A CN 202211038856 A CN202211038856 A CN 202211038856A CN 115509428 A CN115509428 A CN 115509428A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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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
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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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
- 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
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Abstract
The invention provides a free switching method and a system of writing and operating states of whiteboard software in the technical field of electronic whiteboards, wherein the method comprises the following steps: s10, pre-storing the equipment IDs of various types of brushes, and creating a static plug-in of an Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method; s20, receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and if the input object is a painting brush, entering S30; if the palm is the palm, the step S40 is carried out; if the finger is the finger, the step S50 is executed; s30, executing the writing operation of the brush based on the static plug-in; s40, performing erasing operation on the touch area of the palm by the Inkcanvas; and S50, performing gesture operation on the object selected by the finger by the InkCanvas. The invention has the advantages that: the method and the device realize the non-inductive switching between the writing state and the operating state of the whiteboard software, and further greatly improve the user experience.
Description
Technical Field
The invention relates to the technical field of electronic whiteboards, in particular to a method and a system for freely switching writing and operating states of whiteboard software.
Background
With the rapid development of computer technology, various multimedia courseware integrating sound, images, characters and videos has entered the classroom. An electronic whiteboard that integrates a computer technology, a display technology, a network technology, a photographing technology, and the like has been developed in this digital age.
The using states of the electronic whiteboard comprise a writing state (painting brush writing and painting brush erasing) and an operating state (object operation and page operation), and the electronic whiteboard inevitably needs to be switched among the painting brush writing, the painting brush erasing, the object operation and the page operation in the using process. The operation of the electronic whiteboard depends on whiteboard software, while the traditional whiteboard software depends on a trigger signal of a corresponding switching button to execute switching operation, for example, switching from painting brush writing to object operation needs to be performed by one click, seamless switching cannot be performed, which undoubtedly affects the continuity of user operation and greatly affects user experience.
Therefore, how to provide a method and a system for freely switching writing and operating states of whiteboard software to realize the noninductive switching of the writing and operating states of the whiteboard software so as to improve the user experience becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method and a system for freely switching writing and operating states of whiteboard software, so that the non-inductive switching of the writing and operating states of the whiteboard software is realized, and the user experience is further improved.
In a first aspect, the invention provides a method for freely switching writing and operating states of whiteboard software, which comprises the following steps:
step S10, pre-storing the equipment ID of each type of brush, and creating a static plug-in of an Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
s20, receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and if the input object is a painting brush, entering S30; if the palm is the palm, the step S40 is carried out; if the finger is the finger, the step S50 is executed;
s30, executing the writing operation of the brush based on the static plug-in;
s40, performing erasing operation on the touch area of the palm by the Inkcanvas;
and S50, performing gesture operation on the object selected by the finger by using the InkCanvas.
Further, in the step S10, the OnStylusDown method is used for identifying a pen-down operation, the OnStylusMove method is used for identifying a moving operation, and the OnStylusUp method is used for identifying a pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
Further, the step S30 specifically includes:
when the static plug-in recognizes that the painting brush is in a pen-falling state through an OnStylusDown method, the writing state of the whiteboard software is judged, and if the writing state is not writable, the writing state is updated to be writable;
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen lifting state through the OnStylusUp method, ending the current writing operation.
Further, the step S40 specifically includes:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing content in the touch area.
Further, the step S50 specifically includes:
step S51, generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, and further not calling the OnStylUDown method, and updating a writing state to be unwritable;
s52, presetting an increment threshold, identifying the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; and if so, executing the operation corresponding to the gesture on the currently selected object, and finishing the current gesture operation when the finger is identified to be in the lifting state through the gesture event.
In a second aspect, the invention provides a whiteboard software writing and operating state free switching system, which comprises the following modules:
the static plug-in creating module is used for storing the equipment IDs of various types of brushes in advance and creating the static plug-in of the Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
the input object identification module is used for receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and entering the writing operation module if the input object is a painting brush; if the palm is the palm, entering an erasing operation module; if the finger is the finger, entering a gesture operation module;
the writing operation module is used for executing the writing operation of the brush based on the static plug-in unit;
the erasing operation module is used for executing erasing operation on the touch area of the palm by the InkCanvas;
and the gesture operation module is used for the InkCanvas to perform gesture operation on the object selected by the finger.
Further, in the static plug-in creation module, the OnStylusDown method is used for identifying pen-down operation, the OnStylusMove method is used for identifying mobile operation, and the OnStylusUp method is used for identifying pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
Further, the writing operation module specifically comprises:
when the static plug-in recognizes that the painting brush is in a pen-falling state through an OnStylusDown method, the writing state of the whiteboard software is judged, and if the writing state is not writable, the writing state is updated to be writable;
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen lifting state through the OnStylusUp method, ending the current writing operation.
Further, the erasing operation module specifically includes:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing content in the touch area.
Further, the gesture operation module specifically includes:
the writing limiting unit is used for generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, further not calling the OnStylusDown method, and updating a writing state to be unwritable;
the gesture execution unit is used for presetting an increment threshold, recognizing the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; if yes, the operation corresponding to the gesture is executed on the currently selected object, and when the finger is recognized to be in the lifting state through the gesture event, the current gesture operation is finished.
The invention has the advantages that:
1. the input object is automatically judged through a trigger signal input by a user, writing operation is executed when the input object is a painting brush, erasing operation is executed when the input object is a palm, gesture operation is executed when the input object is a finger, namely no matter what operation is currently executed, state switching (switching among writing operation, erasing operation and gesture operation) is automatically carried out based on the type of the latest input object, clicking of a switching button is not needed in the prior art, the whole switching process is finished at one go, finally, the whiteboard software writing and the operation state are switched in a non-sensitive mode, and further, user experience is greatly improved.
2. By setting the increment threshold, when the gesture of the finger is recognized, the operation corresponding to the gesture is executed only when the moving distance of the gesture is greater than the increment threshold, otherwise, the selection operation is executed, the possibility of misoperation is greatly reduced, and the user experience is further improved.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flow chart of a free switching method of writing and operating states of whiteboard software according to the present invention.
Fig. 2 is a schematic structural diagram of a whiteboard software writing and operating state free switching system according to the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: by automatically judging the input object, writing operation is automatically executed when the input object is a painting brush, erasing operation is automatically executed when the input object is a palm, gesture operation is automatically executed when the input object is a finger, and a switching button does not need to be clicked, so that the non-inductive switching between the writing state and the operating state of the whiteboard software is realized.
Referring to fig. 1 to 2, a preferred embodiment of a method for freely switching writing and operating states of whiteboard software according to the present invention includes the following steps:
s10, pre-storing the equipment IDs of various types of brushes, and creating a static plug-in of an Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
s20, receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and if the input object is a painting brush, entering S30; if the palm is the palm, the step S40 is carried out; if the finger is the finger, the step S50 is executed; firstly, matching the corresponding device type through the device ID, judging whether an input object is a painting brush, and if not, further judging whether the input object is a palm or a finger; specifically, how to judge the palm and the fingers is the prior art, for example, judging by identifying the size of the contact area with the electronic whiteboard;
s30, executing the writing operation of the brush based on the static plug-in unit, namely switching to a brush writing state;
s40, the Inkcanvas executes erasing operation on the touch area of the palm, namely, the touch area is switched to a brush erasing state;
and S50, the InkCanvas performs gesture operation on the object selected by the finger, namely, the object is switched to a gesture operation state.
In any state, the user enters a painting brush writing state by using painting brush input, enters a painting brush erasing state by using palm input, enters a gesture operation state by using finger input, and automatically switches based on the type of an input object so as to realize non-inductive switching.
In step S10, the onstussuwn method is used to identify a pen-down operation, the onstustomove method is used to identify a move operation, and the onstussuup method is used to identify a pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
The step S30 specifically includes:
when the static plug-in recognizes that the painting brush is in a pen-falling state through an OnStylusDown method, the writing state of the whiteboard software is judged, and if the writing state is not writable, the writing state is updated to be writable; the writing state takes the value of writable (Ink) or non-writable (None);
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen lifting state through the OnStylusUp method, ending the current writing operation.
The step S40 is specifically:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing content in the touch area.
The step S50 specifically includes:
step S51, generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, and further not calling the OnStylUDown method, and updating a writing state to be unwritable; for example, the first coordinate value is adjusted to (-9999 );
s52, presetting an increment threshold, identifying the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; if yes, executing operation corresponding to the gesture on the currently selected object, and finishing the current gesture operation when the finger is identified to be in the lifting state through the gesture event; the gesture includes at least a move and a zoom operation; the objects are pictures, videos, tables and the like.
The invention discloses a preferred embodiment of a free switching system of writing and operating states of whiteboard software, which comprises the following modules:
the static plug-in creating module is used for storing the equipment IDs of various types of brushes in advance and creating the static plug-in of the Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
the input object identification module is used for receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and entering the writing operation module if the input object is a painting brush; if the palm is the palm, entering an erasing operation module; if the finger is the finger, entering a gesture operation module; firstly, matching the corresponding device type through the device ID, judging whether an input object is a painting brush, and if not, further judging whether the input object is a palm or a finger; specifically, how to judge the palm and the fingers is the prior art, for example, judging by identifying the size of the contact area with an electronic whiteboard;
the writing operation module is used for executing the writing operation of the brush based on the static plug-in unit, namely switching to a brush writing state;
the erasing operation module is used for the Inkcanvas to execute erasing operation on the touch area of the palm, namely, the touch area is switched to a brush erasing state;
and the gesture operation module is used for the InkCanvas to perform gesture operation on the object selected by the finger, namely switching to a gesture operation state.
In any state, the user enters a painting brush writing state by using painting brush input, enters a painting brush erasing state by using palm input, enters a gesture operation state by using finger input, and automatically switches based on the type of an input object so as to realize non-inductive switching.
In the static plug-in creation module, the OnStylusDown method is used for identifying pen-down operation, the OnStylusMove method is used for identifying mobile operation, and the OnStylusUp method is used for identifying pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
The writing operation module is specifically as follows:
when the static plug-in recognizes that the painting brush is in a pen-down state through an OnStylusDown method, judging the writing state of the whiteboard software, and if the writing state is not writable, updating the writing state to writable; the writing state takes on a writable (Ink) value or a non-writable (None) value;
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen-up state through an OnStylusUp method, ending the current writing operation.
The erasing operation module is specifically as follows:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing content in the touch area.
The gesture operation module specifically comprises:
the writing limiting unit is used for generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, further not calling the OnStylUDown method, and updating a writing state to be unwritable; for example, the first coordinate value is adjusted to (-9999 );
the gesture execution unit is used for presetting an increment threshold, recognizing the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; if yes, executing operation corresponding to the gesture on the currently selected object, and finishing the current gesture operation when the finger is identified to be in the lifting state through the gesture event; the gesture includes at least a move and a zoom operation; the objects are pictures, videos, tables and the like.
In summary, the invention has the advantages that:
1. the input object is automatically judged through a trigger signal input by a user, writing operation is executed when the input object is a painting brush, erasing operation is executed when the input object is a palm, gesture operation is executed when the input object is a finger, namely no matter what operation is currently executed, state switching (switching among writing operation, erasing operation and gesture operation) is automatically carried out based on the type of the latest input object, clicking of a switching button is not needed in the prior art, the whole switching process is completed at one stroke, finally, the non-inductive switching between writing and operating states of whiteboard software is realized, and further, the user experience is greatly improved.
2. By setting the increment threshold, when the gesture of the finger is recognized, the operation corresponding to the gesture is executed only when the moving distance of the gesture is greater than the increment threshold, otherwise, the selection operation is executed, the possibility of misoperation is greatly reduced, and the user experience is further improved.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A free switching method of writing and operating states of whiteboard software is characterized in that: the method comprises the following steps:
s10, pre-storing the equipment IDs of various types of brushes, and creating a static plug-in of an Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
s20, receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and if the input object is a painting brush, entering S30; if the palm is the palm, the step S40 is carried out; if the finger is the finger, the step S50 is executed;
s30, executing the writing operation of the brush based on the static plug-in;
s40, performing erasing operation on the touch area of the palm by the Inkcanvas;
and S50, performing gesture operation on the object selected by the finger by the InkCanvas.
2. The free switching method of the writing and operating states of the whiteboard software according to claim 1, wherein: in step S10, the onstussuwn method is used to identify a pen-down operation, the onstustomove method is used to identify a move operation, and the onstussuup method is used to identify a pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
3. The free switching method of the writing and operating states of the whiteboard software according to claim 1, wherein: the step S30 specifically includes:
when the static plug-in recognizes that the painting brush is in a pen-falling state through an OnStylusDown method, the writing state of the whiteboard software is judged, and if the writing state is not writable, the writing state is updated to be writable;
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen lifting state through the OnStylusUp method, ending the current writing operation.
4. The free switching method of the writing and operating states of the whiteboard software according to claim 1, characterized in that: the step S40 is specifically:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing content in the touch area.
5. The free switching method of the writing and operating states of the whiteboard software according to claim 1, wherein: the step S50 specifically includes:
step S51, generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, and further not calling the OnStylUDown method, and updating a writing state to be unwritable;
s52, presetting an increment threshold, identifying the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; and if so, executing the operation corresponding to the gesture on the currently selected object, and finishing the current gesture operation when the finger is identified to be in the lifting state through the gesture event.
6. The free switching system of writing and operating states of whiteboard software is characterized in that: the system comprises the following modules:
the static plug-in creating module is used for storing the equipment IDs of various types of brushes in advance and creating the static plug-in of the Inkcanvas based on a rewritten OnStylusDown method, an OnStylusMove method and an OnStylusUp method;
the input object identification module is used for receiving a trigger signal input by a user, judging an input object of the trigger signal based on the equipment ID, and entering the writing operation module if the input object is a painting brush; if the palm is the palm, entering an erasing operation module; if the finger is the finger, entering a gesture operation module;
the writing operation module is used for executing the writing operation of the brush based on the static plug-in;
the erasing operation module is used for executing erasing operation on the touch area of the palm by the InkCanvas;
and the gesture operation module is used for the InkCanvas to perform gesture operation on the object selected by the finger.
7. The whiteboard software writing and operating state free switching system according to claim 6, wherein: in the static plug-in creation module, the OnStylusDown method is used for identifying pen-down operation, the OnStylusMove method is used for identifying mobile operation, and the OnStylusUp method is used for identifying pen-up operation; the static plug-in is used for presenting the operation corresponding to the OnStylusDown method, the OnStylusMove method and the OnStylusUp method.
8. The whiteboard software writing and operating state free switching system according to claim 6, wherein: the writing operation module specifically comprises:
when the static plug-in recognizes that the painting brush is in a pen-falling state through an OnStylusDown method, the writing state of the whiteboard software is judged, and if the writing state is not writable, the writing state is updated to be writable;
the static plug-in identifies the moving track of the painting brush through an OnStylusMove method and displays the moving track on the electronic whiteboard in real time;
and when the static plug-in recognizes that the brush is in the pen lifting state through the OnStylusUp method, ending the current writing operation.
9. The whiteboard software writing and operating state free switching system according to claim 6, wherein: the erasing operation module is specifically as follows:
and the Inkcanvas automatically identifies the touch area of the palm, and further controls the electronic whiteboard to automatically erase the drawing contents in the touch area.
10. The whiteboard software writing and operating state free switching system according to claim 6, wherein: the gesture operation module specifically comprises:
the writing limiting unit is used for generating a gesture event by the InkCanvas, adjusting a first coordinate value of an input first point to a preset second coordinate value based on the gesture event, further not calling the OnStylUDown method, and updating a writing state to be unwritable;
the gesture execution unit is used for presetting an increment threshold, recognizing the gesture of the finger based on the gesture event, judging whether the moving distance of the gesture is greater than the increment threshold, and if not, selecting the current object; and if so, executing the operation corresponding to the gesture on the currently selected object, and finishing the current gesture operation when the finger is identified to be in the lifting state through the gesture event.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211038856.9A CN115509428A (en) | 2022-08-29 | 2022-08-29 | Free switching method and system for writing and operating states of whiteboard software |
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| CN202211038856.9A CN115509428A (en) | 2022-08-29 | 2022-08-29 | Free switching method and system for writing and operating states of whiteboard software |
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