CN102419650A - Multi-point touch control realization method and system - Google Patents
Multi-point touch control realization method and system Download PDFInfo
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- CN102419650A CN102419650A CN2011102223068A CN201110222306A CN102419650A CN 102419650 A CN102419650 A CN 102419650A CN 2011102223068 A CN2011102223068 A CN 2011102223068A CN 201110222306 A CN201110222306 A CN 201110222306A CN 102419650 A CN102419650 A CN 102419650A
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Abstract
The invention relates to a multi-point touch control realization method and system, which belong to the technical field of man-computer interaction. In the method, firstly, original touch data sent by touch equipment is read; then, the original touch data is distributed to a corresponding processing device for processing; the processing device analyzes the original touch data and identifies the meaning represented by the touch operation of the original touch data; and finally, the processing results of the processing device on the original touch data are sent to an upper layer application system. The method and the system are applicable to any operation systems or platforms for realizing the multi-point touch control function.
Description
Technical field
The invention belongs to human-computer interaction technique field, be specifically related to a kind of implementation method and system of multi-point touch.
Background technology
In recent years, no matter computing machine is from memory data output or from the angle of processor calculating speed, all obtained significantly promoting, but human-computer interaction technology still rests on the original place basically, does not have actual progress.But along with the listing of the Surface computer of the IPhone of Apple and Microsoft, this phenomenon will have significantly takes on a new look.And the attractive spot of IPhone and Surface, no more than its unique multi-point touch technology.
The multiple input pattern that multi-point touch technology is advocated has been overturned traditional list indication fully and has been hit notion, between being affectedly bashful of two fingers, accomplishes the control of the convergent-divergent or the screen of picture efficiently.Based on the multiple point touching of computer vision and mode identification technology, seem just and simply traditional single-point input is derived in the multiple spot input, but this is the revolution of input technology in fact.
In October, 2009, support the issue of Windows 7 operating systems of multi-point touch technology to can be described as the arrival of having declared the multi-point touch generation, popularizing of multi-point touch technology is irresistible.Along with the continuous development of touch screen technology, Windows 7 has had the software environment that can let touch-screen hardware bring into play, for multiple point touching The Application of Technology software provides the foundation.
Windows Presentation Foundation (WPF) 4.0 is that the program of under Windows 7 operating systems, moving provides multipoint touch interface, and this interface comprises the preview versions by a plurality of routing-events of UIElement definition (TouchDown by name, TouchMove, TouchUp, TouchEnter and TouchLeave) and downward, mobile and the incident of making progress.Obviously, the multipoint touch interface that WPF4 provides is according to the mouse event modeling, and it needs an integer ID attribute to come many fingers on the tracing display screen.And it does not support wider low level touch-controlling interface, as distinguishing the type and the shape of touch-control input.Of paramount importancely be, this interface only can be supported Windows 7 operating systems, and incompatible early stage Windows operating system or other are like operating systems such as Linux, Mac OS.
Summary of the invention
To the defective that exists in the prior art, technical matters to be solved by this invention provides a kind of implementation method and system that is applicable to the multi-point touch of any operating system.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is following:
A kind of implementation method of multi-point touch may further comprise the steps:
Read the original touch data that touch apparatus sends;
Said original touch data is distributed to corresponding processing means;
Treating apparatus is discerned touch operation under the said original touch data according to said original touch data;
Said treating apparatus is sent to the upper layer application system to the recognition result of said original touch data.
The implementation method of aforesaid multi-point touch also comprises and monitors the step that touch apparatus arrives and removes; When listening to touch apparatus when arriving, for this touch apparatus starts a separate threads that is used to read the original touch data that this touch apparatus sends; When listening to a touch apparatus when removing, cancel the thread that is used to read the original touch data that this touch apparatus sends.
The implementation method of aforesaid multi-point touch, wherein, it is following that said original touch data is distributed to the process that corresponding touch data treating apparatus handles:
Said original touch data is sent to all treating apparatus with the form of message;
Each treating apparatus is resolved the message that receives, and obtains original touch data form;
If said original touch data form meets the original touch data form that said treating apparatus can be handled, then handle said original touch data; Otherwise, abandon said original touch data.
The implementation method of aforesaid multi-point touch; Wherein, Under the said original touch data of identification in the touch operation process; Affiliated touch operation is not its operation that can handle if treating apparatus is found said original touch data, then no longer handles to belong to this touch operation original touch data afterwards.
The implementation method of aforesaid multi-point touch wherein, sends to the upper layer application system with said result with the form of message, and according to the upper layer application system to the processing feedback of each message automatically adjustment send density.
The implementation method of aforesaid multi-point touch, wherein, self-adjusting method comprises the steps:
After being arranged on the upper layer application system and receiving message and handle message, feedback message has received and information processed;
When the message that receives the transmission of upper layer application system has received feedback, this message is pressed in the massage set; When the message that receives the transmission of upper layer application system has been handled feedback, this message is shifted out said massage set;
Before sending message, inquire about said massage set, confirm that how much message is the upper layer application system have be untreated at present and finish; The message number that finishes if be untreated reaches setting threshold and the current message of sending and the message that finishes that is untreated of being about to is message of the same type, then filters out the message that is about to transmission.
A kind of realization system of multi-point touch comprises the reading device that is used to read the original touch data that touch apparatus sends;
Be used for said original touch data is distributed to the distributor of corresponding processing means;
Be used for discerning the treating apparatus of touch operation under the said original touch data according to said original touch data;
Be used for said treating apparatus is sent to the result of said original touch data the dispensing device of upper layer application system.
The realization system of aforesaid multi-point touch also comprises being used to monitor the monitoring device that touch apparatus arrives and removes.
The realization system of aforesaid multi-point touch, wherein, reading device comprises and being used for when listening to touch apparatus when arriving, for this touch apparatus starts a start unit that is used to read the separate threads of the original touch data that this touch apparatus sends; Be used for when the unit of cancelling that listens to a touch apparatus when removing, cancel the thread that is used to read the original touch data that this touch apparatus sends.
The realization system of aforesaid multi-point touch; Wherein, Treating apparatus comprises the gesture processor that is used to analyze the represented meaning of touch operation gesture, is used to handle the adjustment processor of touch operation object adjustment data, and the inertia processor that is used to handle the inertia motion of touch operation object.
The realization system of aforesaid multi-point touch, wherein, dispensing device sends to the upper layer application system with the result of said treating apparatus with the form of message, according to the upper layer application system to the processing feedback of each message automatically adjustment send density.
The realization system of aforesaid multi-point touch, wherein, dispensing device comprises:
Message elements is used for when the message that receives the transmission of upper layer application system has received feedback, this message being pressed in the massage set; When the message that receives the transmission of upper layer application system has been handled feedback, this message is shifted out said massage set;
Query unit is used for before sending message, inquiring about said massage set, confirms that how much message is the upper layer application system have be untreated at present and finish;
When filter element, the message number that is used for finishing when being untreated reach setting threshold and current message of be about to sending and be message of the same type with the message that finishes of being untreated, filter out and be about to the message of sending.
The method of the invention and system; Overcome the defective that multi-point touch technology in the prior art receives operating system or platform constraints; Applicable to any operating system or platform, realized cross-platform a, striding equipment, with the bottom solution of the multi-point touch of upper layer application system independence.
Description of drawings
Fig. 1 be multi-point touch in the embodiment realization system and touch apparatus driver, computer operating system and upper layer application system concern synoptic diagram;
Fig. 2 is the structured flowchart of the realization system of multi-point touch in the embodiment;
Fig. 3 is the process flow diagram of the implementation method of multi-point touch in the embodiment.
Embodiment
Describe the present invention below in conjunction with embodiment and accompanying drawing.
As shown in Figure 1; The realization system works of multi-point touch according to the invention is between touch apparatus driver, computer operating system and upper layer application system; Handle and the encapsulation touch data; For computer operating system provides unified application development interface; The unified API (Application Programming Interface, API) that can utilize native system to provide during the upper layer application system development remedies the existing existing the most serious deficiency of solution with this.The stand-alone assembly that the touch apparatus driver is provided for corresponding touch apparatus hardware vendor; The touch apparatus Data Acquisition interface that hardware is sent externally mainly is provided; The respective operations system need receive the data that driver sends; Operating system also is in charge of hardware device simultaneously, to operation software above that equipment interface is provided.
As shown in Figure 2; The realization system of multi-point touch comprises monitoring device 21, reading device 22, distributor 23, treating apparatus 24 and dispensing device 25 in this embodiment; Reading device 22 comprises start unit and cancels the unit; Treating apparatus 24 comprises gesture processor, adjustment processor and inertia processor, and dispensing device 25 comprises message elements, query unit and filter element.
As shown in Figure 3, adopt system shown in Figure 2 to realize that the process of multi-point touch may further comprise the steps:
(1) reading device 22 reads the original touch data (301) that touch apparatus sends.
The arrival of 21 pairs of touch apparatus of monitoring device and removing is monitored.Operating system (following is example with Windows operating system) provides the arrival of equipment and has removed notice, and monitoring device 21 can be registered this two notices to operating system when being initialised.When any new equipment reaches; Monitoring device 21 need judge all whether this equipment is touch apparatus; Deterministic process is: the Class that obtains this equipment; If Class=HIDClass and ClassGuid=745a17a0-74d3-11d0-b6fe-00a0c90f57da represent that then this equipment is a HID equipment; Then obtain the HID USAGE value of this HID equipment,, represent that then this equipment is a touch apparatus if HID USAGE=0x09 is 0x04.Detect after newly arrived equipment is a touch apparatus at monitoring device 21, reading device 22 just can read the original touch data that this touch apparatus sends.Reading device 22 constantly reads the original touch message that touch apparatus sends, and when reading original touch message, just it is transmitted to distributor 23.
Preferably; When monitoring device 21 listens to new touch apparatus arrival; Start unit in the reading device 22 just starts an independently thread, the original touch data that is sent to guarantee under the prerequisite that has shielded external interference, reading this touch apparatus efficiently for this touch apparatus.When listening to a touch apparatus when being removed, cancel the unit and cancel the thread that is used to read the original touch data that this touch apparatus sends.
Usually touch apparatus sends original touch data with the form of message, and the form of the origination message that the touch apparatus hardware of each manufacturer sends is different.But Microsoft has formulated the standard that touches message, and the driver of all hardware manufacturer will be unified standard with the message parse that hardware product sent separately all.The standard that Microsoft customized is very not strong, can allow each manufacturer to have some to control flexibly, but in the description of the message format of the present equipment of self-defining message format necessitative aspect.Message generally is divided into following two types: one type is serial message, and one type is concurrent messages.For example, the message of serial can be sent according to following form:
Each row in the last table is represented a packet.In data rows, ReportID representes report number; Status representes the state of touch point, comprises pressing and lifting; X representes the X coordinate of touch point; Y representes the Y coordinate of touch point; Width representes the width of touch point; Height representes the height of touch point; Count representes total what touch points in these group data; Index representes which touch point is these data be.
(2) distributor 23 original touch data that reading device 22 is read is distributed to corresponding processing means (302).
In this embodiment, distributor 23 distributes the mode of original touch data to be: original touch message is sent to all treating apparatus 24.Each treating apparatus 24 is resolved the message that receives, and obtains original touch data form.If this original touch data format character is should the original touch data form that treating apparatus 24 can be handled is then handled this original touch data; Otherwise, abandon this original touch data.
(3) treating apparatus 24 is discerned touch operation (303) under the said original touch data according to said original touch data.
Treating apparatus 24 can be provided with several according to concrete application need, and a treating apparatus 24 is handled one type touch data.In this embodiment, treating apparatus 24 comprises three types of gesture processor, adjustment processor and inertia processors.
Any one touch point of not pressing that all processors all should send distributor 23 press message interpretation for pressing; And its state is set to press; That sends thereafter presses message and all should be interpreted as mobilely, when receiving when lifting message state is resetted at last.
The gesture processor is used for analyzing according to original touch data the gesture of this touch operation, as moving gesture, convergent-divergent gesture, rotate gesture etc.The analytical approach of different gestures is different, and same gesture also has various analysis.Be example with the Flick gesture below, the analytic process of gesture processor is briefly described.When detecting a touch point and press; If this point is when having no another point to press in first point pressed and the analytic process after this; Time when the coordinate that then writes down the current point of pressing is pressed with it, then wait for the mobile messaging that next imports into.Each mobile messaging that transmits subsequently all need be obtained the touch point coordinate, and the gesture processor constantly is connected to a vector with the coordinate of current point and coordinate before; Receive this point lift message the time, obtain current system time, then calculate this time and the time difference when this point is pressed before, the vector length that constantly is connected through this mistiming and front is obtained the translational speed of this touch operation.If angle, direction and translational speed that should vector all surpass the Flick gesture that is provided with the in advance threshold value for above parameter, show that then this gesture is by successfully identification.The gesture processor original touch data is treated to can keep supplying the level message that layer application system use after, this message is sent to dispensing device 25.
The adjustment processor be used for according to original touch data calculate the touch operation object amplification, dwindle and the current adjustment data of operation such as rotation, and constantly send current adjustment data to dispensing device 25.For example, the adjustment processor writes down the coordinate of current point when receiving first point of pressing, when this point moves; Constantly calculate current point and press difference (vector) a little for the first time; Be transformed to this vector to the current Translate (displacement) of dispensing device 25 report simultaneously, and Scale (convergent-divergent) conversion is always 1, i.e. convergent-divergent not; Rotate (rotation) conversion is always 0, i.e. not rotation.When the 2nd point pressed, the coordinate when writing down the 2nd point and pressing, and write down the vector of this coordinate and the 1st coordinate that point is pressed.When any 1 point of above two points moves, constantly calculate the difference of the Translate conversion that the vector of record before current two formed vector sums of point exists (drawing), Rotate conversion (drawing) or Rotate conversion (drawing) and report to dispensing device 25 through the difference of two vectors relatively with the formed angle of X axle through the length difference of two vectors relatively through the difference of the central point of two vectors relatively.
After inertia processor was used to handle the touch operation completion, operand carried out the amount of exercise of inertia motion according to former mode of motion.For example; The inertia of Translate conversion can be realized like this: writing time and coordinate when the 1st point pressed; In the process that this point constantly moves, constantly obtain the coordinate of current point and current time, mistiming and range difference that time when then pressing according to the 1st time and coordinate can calculate each point in its moving process so just can calculate this Translate and operate the acceleration change situation in the whole process; When this point lifts; Can be according to the threshold value of the mistiming that has set in advance, obtain the acceleration situation in this threshold time section that pushes away forward when lifting, and with reference to the acceleration change situation of whole operation; The Translate that simulates an acceleration inertia is poor, and constantly to dispensing device 25 reports.
Because original touch data is sent out to all treating apparatus, therefore under this original touch data of identification, in the process of touch operation, possibly there is the simultaneously treated phenomenon of a plurality of treating apparatus.Affiliated touch operation is not its operation that can handle if treating apparatus is found said original touch data, then no longer handles to belong to this touch operation original touch data afterwards.
Because touch gestures is of a great variety; A kind of recognition methods of touch gestures is also varied; Therefore three types of being not limited to provide in this embodiment of treating apparatus 24, every type concrete implementation also is not limited to above-mentioned implementation, can carry out flexible expansion according to the actual requirements; As increase the type of treating apparatus, perhaps change the recognition methods of certain touch gestures etc.
(4) dispensing device 25 sends to upper layer application system (304) with the result of 24 pairs of original touch datas of treating apparatus.
Because treating apparatus 24 process result data are different, so dispensing device 25 is also different to the message format of upper strata application system transmission.For example,, comprise the type " Zoom " of gesture in its message for the Zoom gesture, the regulated value of gesture " Delta ", type is double, representes this Zoom gesture amplification or has dwindled full-sized what times.
Dispensing device 25 needs the upper layer application system feedback " to receive " and " handling " notice when externally sending message.For example, if the registration of upper layer application system needs to receive the adjustment data, think promptly that to registered upper layer application system's transmission message the upper layer application system " receives " so; The upper layer application system handles finishes and causes this to call end then to think " handling ".Dispensing device 25 is when receiving " receiving " feedback of upper layer application system, and message elements is pressed into this message in the massage set of an inside, when receiving " handling " feedback, this message that disposes is shifted out this massage set.After massage set in the processing was set, how much message was query unit can the query messages set have do not dispose at present with definite upper layer application system before sending message.The message number that finishes if be untreated reaches preset threshold and the current message that is about to send is and the message message of the same type that is untreated and finishes that then filter element can filter this message, to alleviate the pressure of upper layer application system.Message screening quantity should be according to the inner strategy decision of dispensing device 25, and different message has different filtering policys.For example, adjustment message can be confirmed according to the difference of adjustment amount.
Description through to the specific embodiment of the invention can know: the present invention has overcome the defective that multi-point touch technology in the prior art receives operating system or platform constraints; Applicable to any operating system or platform, realized cross-platform a, striding equipment, with the bottom solution of the multi-point touch of upper layer application system independence.Wherein, cross-platform reason is to be: to the upper layer application system, native system externally provides consistent API, and native system self can have different realizations on the platform arbitrarily; The reason of striding equipment is: internal system has designed the consistent reading device and the API of distributor; Can there be the realization of different reading devices to different protocol, as long as the connection API of the API and the distributor of reading device itself is satisfied in this realization simultaneously; Be embodied in the upper layer application system independence: system externally provides consistent API to keep supplying a layer application system and has called, and Any Application only needs the API that calls native system through operating system to get final product.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technology thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. the implementation method of a multi-point touch is characterized in that, said method comprising the steps of:
Read the original touch data that touch apparatus sends;
Said original touch data is distributed to corresponding processing means;
Treating apparatus is discerned touch operation under the said original touch data according to said original touch data;
Said treating apparatus is sent to the upper layer application system to the recognition result of said original touch data.
2. the implementation method of multi-point touch as claimed in claim 1 is characterized in that: said method also comprises monitors the step that touch apparatus arrives and removes;
When listening to touch apparatus when arriving, for this touch apparatus starts a separate threads that is used to read the original touch data that this touch apparatus sends;
When listening to a touch apparatus when removing, cancel the thread that is used to read the original touch data that this touch apparatus sends.
3. the implementation method of multi-point touch as claimed in claim 1 is characterized in that, the process that said original touch data is distributed to corresponding processing means is following:
Said original touch data is sent to all treating apparatus with the form of message;
Each treating apparatus is resolved the message that receives, and obtains original touch data form;
If said original touch data form meets the original touch data form that said treating apparatus can be handled, then handle said original touch data; Otherwise, abandon said original touch data.
4. the implementation method of multi-point touch as claimed in claim 1; It is characterized in that: under the said original touch data of identification in the touch operation process; Affiliated touch operation is not its operation that can handle if treating apparatus is found said original touch data, then no longer handles to belong to this touch operation original touch data afterwards.
5. like the implementation method of each described multi-point touch in the claim 1～4; It is characterized in that: said result is sent to the upper layer application system with the form of message, and according to the upper layer application system to the processing feedback of each message automatically adjustment send density.
6. the implementation method of multi-point touch as claimed in claim 5 is characterized in that, said self-adjusting method comprises the steps:
After being arranged on the upper layer application system and receiving message and handle message, feedback message has received and information processed;
When the message that receives the transmission of upper layer application system has received feedback, this message is pressed in the massage set; When the message that receives the transmission of upper layer application system has been handled feedback, this message is shifted out said massage set;
Before sending message, inquire about said massage set, confirm that how much message is the upper layer application system have be untreated at present and finish; The message number that finishes if be untreated reaches setting threshold and the current message of sending and the message that finishes that is untreated of being about to is message of the same type, then filters out the message that is about to transmission.
7. the realization system of a multi-point touch is characterized in that: said system comprises the reading device (22) that is used to read the original touch data that touch apparatus sends;
Be used for said original touch data is distributed to the distributor (23) of corresponding processing means (24);
Be used for discerning the treating apparatus (24) of touch operation under the said original touch data according to said original touch data;
Be used for said treating apparatus (24) is sent to the result of said original touch data the dispensing device (25) of upper layer application system.
8. the realization system of multi-point touch as claimed in claim 7 is characterized in that: said system also comprises and is used to monitor the monitoring device (21) that touch apparatus arrives and removes.
9. the realization system of multi-point touch as claimed in claim 7; It is characterized in that: said reading device (22) comprises and being used for when listening to touch apparatus when arriving, for this touch apparatus starts a start unit that is used to read the separate threads of the original touch data that this touch apparatus sends;
Be used for when the unit of cancelling that listens to a touch apparatus when removing, cancel the thread that is used to read the original touch data that this touch apparatus sends.
10. like the realization system of the described multi-point touch of one of claim 7～9; It is characterized in that: said treating apparatus (24) comprises the gesture processor that is used to analyze the represented meaning of touch operation gesture; Be used to handle the adjustment processor of touch operation object adjustment data, and the inertia processor that is used to handle the inertia motion of touch operation object.
11. realization system like the described multi-point touch of one of claim 7～9; It is characterized in that: said dispensing device (25) sends to the upper layer application system with the result of said treating apparatus (24) with the form of message, according to the upper layer application system to the processing feedback of each message automatically adjustment send density.
12. the realization system of multi-point touch as claimed in claim 11 is characterized in that, said dispensing device (25) comprising:
Message elements is used for when the message that receives the transmission of upper layer application system has received feedback, this message being pressed in the massage set; When the message that receives the transmission of upper layer application system has been handled feedback, this message is shifted out said massage set;
Query unit is used for before sending message, inquiring about said massage set, confirms that how much message is the upper layer application system have be untreated at present and finish;
When filter element, the message number that is used for finishing when being untreated reach setting threshold and current message of be about to sending and be message of the same type with the message that finishes of being untreated, filter out and be about to the message of sending.
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| CN102819391A (en) * | 2012-07-24 | 2012-12-12 | 华平信息技术（南昌）有限公司 | System and method of multi-point touch gesture feedback system with concurrency under multiple scenes |
| CN103309673A (en) * | 2013-06-24 | 2013-09-18 | 北京小米科技有限责任公司 | Session processing method and device based on gesture, and terminal equipment |
| CN105807967A (en) * | 2014-12-30 | 2016-07-27 | 鸿合科技有限公司 | Writing method and device for electronic whiteboard |
| CN106648403A (en) * | 2016-09-06 | 2017-05-10 | 广州视睿电子科技有限公司 | Multi-touch gesture achieving method and device under MACOSX system |
| CN107728841A (en) * | 2017-10-17 | 2018-02-23 | 中国船舶重工集团公司第七0九研究所 | Multi-touch method and system based on acceptance of the bid kylin operating system |
| CN113687898A (en) * | 2021-08-24 | 2021-11-23 | 天津津航计算技术研究所 | QT development-based multi-point touch function implementation method under road system |
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| CN107728841A (en) * | 2017-10-17 | 2018-02-23 | 中国船舶重工集团公司第七0九研究所 | Multi-touch method and system based on acceptance of the bid kylin operating system |
| CN113687898A (en) * | 2021-08-24 | 2021-11-23 | 天津津航计算技术研究所 | QT development-based multi-point touch function implementation method under road system |
| CN113687898B (en) * | 2021-08-24 | 2024-02-27 | 天津津航计算技术研究所 | Multi-touch function implementation method based on QT development under channel system |
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Application publication date: 20120418 |