CN113535104A - Multi-screen display switching method and device based on virtual machine - Google Patents
Multi-screen display switching method and device based on virtual machine Download PDFInfo
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- CN113535104A CN113535104A CN202110600660.3A CN202110600660A CN113535104A CN 113535104 A CN113535104 A CN 113535104A CN 202110600660 A CN202110600660 A CN 202110600660A CN 113535104 A CN113535104 A CN 113535104A
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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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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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]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04842—Selection of displayed objects or displayed text elements
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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
Abstract
The invention provides a multi-screen display switching method and device based on a virtual machine, wherein the method comprises the following steps: step 1, receiving a screen changing display instruction, and determining an initiating display screen and a target display screen; step 2, determining a corresponding client window after the screen changing display of the initiating display screen and the target display screen; step 3, determining a second matching relation according to a first matching relation, wherein the first matching relation is a matching relation between a client window and a virtual touch device channel, and the second matching relation is a target virtual touch device channel for mounting virtual touch devices corresponding to the initiating display screen and the target display screen; step 4, re-mounting the virtual touch equipment corresponding to the initiating display screen and the target display screen according to the second matching relation; and 5, sending the received touch data to a corresponding client window through a corresponding virtual touch device channel. The invention realizes that the touch data channel is automatically matched with the user interface after screen changing display.
Description
Technical Field
The invention relates to the technical field of virtual machines, in particular to a multi-screen display switching method and device based on a virtual machine.
Background
In some application scenarios (for example, an intelligent cockpit product), a plurality of display screens are usually provided, and information sharing, such as song sharing, video sharing, and the like, can be realized between different display screens, but in the prior art, a user cannot exchange user interfaces between the plurality of display screens at any time, such as exchanging user interfaces of a first display screen and a second display screen, and if a user interface of two display screens needs to be exchanged, a developer needs to fix a user interface and a touch screen channel corresponding to the display screen in software in advance, and then upgrading the product can be realized, which brings inconvenience to the use of the user.
Therefore, the prior art is in need of further improvement.
Disclosure of Invention
The invention provides a multi-screen display switching method and device based on a virtual machine, and aims to overcome the defects in the prior art and realize that a touch data channel is automatically matched with a user interface after screen changing display.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a multi-screen display switching method based on a virtual machine, which comprises the following steps:
step 1, receiving a screen changing display instruction, and determining an initiating display screen and a target display screen;
step 2, determining a corresponding client window after the screen changing display of the initiating display screen and the target display screen;
step 3, determining a second matching relation according to a first matching relation, wherein the first matching relation is a matching relation between a client window and a virtual touch device channel, and the second matching relation is a target virtual touch device channel for mounting virtual touch devices corresponding to the initiating display screen and the target display screen;
step 4, re-mounting the virtual touch equipment corresponding to the initiating display screen and the target display screen according to the second matching relation;
and 5, sending the received touch data to a corresponding client window through a corresponding virtual touch device channel.
Specifically, the step 4 includes:
step 401, uninstalling virtual touch devices corresponding to the initiating display screen and the target display screen;
step 402, re-mounting the corresponding virtual touch device according to the second matching relationship.
Further, before the step 1, the method further comprises:
step A1, obtaining mounting information of a display device and a touch device, and generating a corresponding virtual touch device according to the touch device;
a2, acquiring the corresponding relation between a display screen and a display output channel;
and step A3, the host system loads the display content according to the display setting saved for the last time for display.
Specifically, the display device and the touch device are mounted in the same order.
In another aspect, the present invention provides a multi-screen display switching apparatus based on a virtual machine, including:
the system comprises a first display component consisting of a first display screen and a first touch screen, a second display component consisting of a second display screen and a second touch screen, a host window set at least comprising a host window, a host window manager, a display data page, a shared display data page and a synthesizer, which are arranged in a host system, and a client window set at least comprising a client window, a client window manager, a shared output configuration module, a touch matching module, a touch distribution module and a switching module, which are arranged in a client system;
the host window set, the host window manager, the display data page, the shared display data page, the synthesizer and the first display assembly are sequentially connected, and the synthesizer is also connected with the shared display data page and the second display assembly; the client window set, the client window manager, the shared output configuration module, the touch matching module and the touch distribution module are sequentially connected, the client window manager is further connected with the switching module, the touch distribution module is further connected with the client window set, the shared output configuration module is connected with the shared display data page, and the touch matching module is further connected with the first display assembly and the second display assembly;
the display screen is used for receiving and displaying the display data sent by the synthesizer;
the touch screen is used for receiving touch information and generating touch data;
the window set is used for drawing a user interface or presenting a video stream;
the window manager is used for managing the creation, destruction and parameter configuration of the windows in the host system and the client system;
the display data page is used for receiving the window data sent by the window manager and caching the window data;
the shared display data page is used for directly mapping the data required to be displayed by the client system to the corresponding display data page in the host system;
the synthesizer is used for synthesizing the display data in the display data page or the shared display data page and outputting the synthesized display data to a corresponding display screen through a display output interface;
the shared output configuration module is used for acquiring configuration parameters of display change and sending the configuration parameters to a shared display data page and a touch matching module;
the touch matching module is used for matching a window in the virtual machine system with touch data generated by the touch screen;
the touch distribution module is used for distributing the received touch data to a window corresponding to the client system according to a preset matching relation between the window in the client system and the virtual touch equipment channel;
and the switching module is used for initiating a screen changing display instruction.
Specifically, the shared display data page and the display data page establish a one-to-one correspondence relationship in a direct mapping manner.
Specifically, the touch matching module is a virtual hardware device bus, and is used for mounting a virtual touch device, and includes: the touch control system comprises a first virtual touch device, a second virtual touch device, a first virtual touch channel and a second virtual touch channel;
the first virtual touch device corresponds to the first touch screen, and the second virtual touch device corresponds to the second touch screen.
Specifically, the touch matching module determines a target virtual touch device channel where the virtual touch devices corresponding to the first display screen and the second display screen are mounted according to a matching relationship between a client window and the virtual touch device channel.
Specifically, the display data page at least includes one display output channel, the display output channel at least includes one hardware layer, the shared display data page at least includes one shared display output channel, and the display output channel at least includes one shared hardware layer.
The invention has the beneficial effects that: according to the method and the device, the corresponding client windows after the screen changing display of the initiating display screen and the target display screen are determined, and the target virtual touch device channel for mounting the virtual touch devices corresponding to the initiating display screen and the target display screen is determined according to the matching relation between the client windows and the virtual touch device channels, so that the corresponding virtual touch devices are mounted again, and the user interface after the screen changing display is automatically matched by the touch data channel is realized.
Drawings
FIG. 1 is a flowchart illustrating a method for switching between virtual machine-based multi-screen displays according to the present invention;
FIG. 2 is a schematic structural diagram of the virtual machine based multi-screen display switching apparatus according to the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustrative purposes only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment provides a multi-screen display switching method based on a virtual machine, including:
step 1, receiving a screen changing display instruction, and determining an initiating display screen and a target display screen.
The screen changing display refers to the exchange display of the content displayed on the initiating display screen (such as the first display screen) and the target display screen (such as the second display screen) which currently send the screen changing display instruction. Of course, in a system with more than two displays, the first display may be displayed interchangeably with the content of any of the other displays.
And step 2, determining the corresponding client windows after the screen changing display of the initiating display screen and the target display screen.
For example, the initiating display (first display) is before the screen change display, corresponding to client window 2_ 1; after screen changing display, initiating a display screen (a first display screen) corresponding to the client window 2_ 2; similarly, the target display (second display) corresponds to the client window 2_2 before the screen change display, and corresponds to the client window 2_1 after the screen change display.
And 3, determining a second matching relation according to a first matching relation, wherein the first matching relation is the matching relation between the client window and the virtual touch equipment channel, and the second matching relation is a target virtual touch equipment channel mounted by the virtual touch equipment corresponding to the initiating display screen and the target display screen.
The first matching relationship may be set in advance and stored in the client system.
In one practical example, the first matching relationship is shown in table 1.
TABLE 1
| Window number | First virtual touch device channel (VCh _1) | Second virtual touch device channel (VCh _2) |
| Window 2_1 | √ | × |
| Window 2_2 | × | √ |
| Window 2_3 | × | √ |
| Window 2_4 | × | √ |
| Window 2_5 | √ | × |
Table 1 indicates that data of the first virtual touch device channel (VCh _1) can be transmitted to Window 2_1, Window 2_5, and data of the second virtual touch device channel (VCh _2) can be transmitted to Window 2_2, Window 2_3, Window 2_ 4.
For example, if the target display screen (second display screen) is to display the content of the window 2_1, it can be known from table 1 that the target virtual touch device channel of the second virtual touch device corresponding to the second touch screen matched with the target display screen (second display screen) is the first virtual touch device channel.
And 4, re-mounting the virtual touch equipment corresponding to the initiating display screen and the target display screen according to the second matching relation.
In this embodiment, the step 4 includes:
step 401, uninstalling the virtual touch devices corresponding to the initiating display screen and the target display screen.
Step 402, re-mounting the corresponding virtual touch device according to the second matching relationship.
For example, when the second matching relationship is:
a first virtual touch device MUT and a second virtual touch device channel;
a second virtual touch device MUT a first virtual touch device channel;
in this case, MUT represents mount.
Then, mount the first virtual touch device to the second virtual touch device channel and mount the second virtual touch device to the first virtual touch device channel.
And 5, sending the received touch data to a corresponding client window through a corresponding virtual touch device channel.
After the virtual touch device is mounted again, touch data on the first virtual touch device channel can be sent to the window 2_2, and touch data on the second virtual touch device channel can be sent to the window 2_1, so that self-adaptive matching of the user interface and the touch data is completed.
In another embodiment of the present invention, step 1 is preceded by:
and A1, obtaining mounting information of the display device and the touch device, and generating a corresponding virtual touch device according to the touch device.
In this embodiment, the display device and the touch device are mounted in the same order.
For example, when the system is started, the host system mounts the first display screen first and then mounts the second display screen, and then the first touch screen and the second touch screen matched with the first display screen and the second display screen are also mounted according to the same sequence. Of course, the display device and the touch device may be mounted in different orders.
And after the host system finishes mounting the display equipment and the touch equipment, the mounting information is sent to the client system.
The virtual touch device corresponding to the first touch screen is the first virtual touch device VNm _ a, and the virtual touch device corresponding to the second touch screen is the second virtual touch device VNm _ B.
And A2, acquiring the corresponding relation between the display screen and the display output channel.
The corresponding relation between the display screen and the display output channel can be preset by the host system and sent to the client system.
For example, the target output display screen of the content in the first display output channel is the first display screen, and the target output display screen of the content in the second display output channel is the second display screen. That is, the content of the first display output channel is output for display on the first display screen, the content of the second display output channel is output for display on the second display screen, and so on.
And step A3, the host system loads the display content according to the display setting saved for the last time for display.
For example, the last saved display setting is the first display displaying the content of window 2_1 in the client system and the second display displaying the content of window 2_2 in the client system.
Example 2
As shown in fig. 2, the present embodiment provides a multi-screen display switching apparatus based on a virtual machine, including:
the system comprises a first display component consisting of a first display screen and a first touch screen, a second display component consisting of a second display screen and a second touch screen, a host window set at least comprising a host window, a host window manager, a display data page, a shared display data page and a synthesizer, which are arranged in a host system, and a client window set at least comprising a client window, a client window manager, a shared output configuration module, a touch matching module, a touch distribution module and a switching module, which are arranged in a client system;
the host window set, the host window manager, the display data page, the shared display data page, the synthesizer and the first display assembly are sequentially connected, and the synthesizer is also connected with the shared display data page and the second display assembly; the client window set, the client window manager, the shared output configuration module, the touch matching module and the touch distribution module are sequentially connected, the client window manager is further connected with the switching module, the touch distribution module is further connected with the client window set, the shared output configuration module is connected with the shared display data page, and the touch matching module is further connected with the first display assembly and the second display assembly;
the display screen is used for receiving and displaying the display data sent by the synthesizer;
the touch screen is used for receiving touch information and generating touch data;
the window set is used for drawing a user interface or presenting a video stream;
the window manager is used for managing the creation, destruction and parameter configuration of the windows in the host system and the client system;
the display data page is used for receiving the window data sent by the window manager and caching the window data;
the shared display data page is used for directly mapping the data required to be displayed by the client system to the corresponding display data page in the host system;
the synthesizer is used for synthesizing the display data in the display data page or the shared display data page and outputting the synthesized display data to a corresponding display screen through a display output interface;
the shared output configuration module is used for acquiring configuration parameters of display change and sending the configuration parameters to a shared display data page and a touch matching module;
the touch matching module is used for matching a window in the virtual machine system with touch data generated by the touch screen;
the touch distribution module is used for distributing the received touch data to a window corresponding to the client system according to a preset matching relation between the window in the client system and the virtual touch equipment channel;
and the switching module is used for initiating a screen changing display instruction.
In this embodiment, the shared display data page and the display data page establish a one-to-one correspondence relationship in a direct mapping manner.
In this way, the client system can directly display the data of the windows 2_1 and 2_2 on the corresponding display screens by sharing the hardware layers in the display data page.
In another embodiment of the present invention, the touch matching module is a virtual hardware device bus, and is configured to mount a virtual touch device, including: the touch control system comprises a first virtual touch device, a second virtual touch device, a first virtual touch channel and a second virtual touch channel;
the first virtual touch device corresponds to the first touch screen, and the second virtual touch device corresponds to the second touch screen.
The virtual touch device contains a device name and a channel number.
The name (VNm) of the virtual touch channel device can be set as desired at system design time. For example, the name of a first virtual touch channel device corresponding to a first touch screen associated with a first display screen is set to VNm _ A, the name of a second virtual touch channel device corresponding to a second touch screen associated with a second display screen is set to VNm _ B, and so on.
The channel numbers (VCh _1, VCh _2 … VCh _ n) of the virtual touch devices are determined according to the mounting sequence of the virtual touch channel devices, and the mounting sequence of the virtual touch channel devices can be changed as required, so that the same virtual touch channel device can be mounted on virtual touch channels with different channel numbers as required.
In another embodiment of the present invention, the touch matching module determines a target virtual touch device channel for mounting the virtual touch devices corresponding to the first display screen and the second display screen according to a matching relationship between the client window and the virtual touch device channel.
In another embodiment of the present invention, the display data page at least includes one display output channel, the display output channel at least includes one hardware layer, the shared display data page at least includes one shared display output channel, and the display output channel at least includes one shared hardware layer.
In specific implementation, the corresponding relationship between the display output channel and the display screen includes the following situations, and specifically, which mode is adopted can be selected according to actual design:
1) one display output channel corresponds to one display screen, for example: the hardware layer of the first display output channel is synthesized and then output to a first display screen, and the hardware layer of the second display output channel is synthesized and then output to a second display screen;
2) one shows output channel and corresponds a plurality of display screens, specifically includes:
a) and each hardware layer of each display output channel corresponds to one display screen.
For example, the hardware layer 1_1 in fig. 2 is synthesized and output to the first display screen, and the hardware layer 1_2 is output to the second display screen.
b) Each hardware layer of each display output channel corresponds to a plurality of display screens.
For example, the hardware layer 1_1 in fig. 2 is divided into two halves, the left half is synthesized and output to the first display screen, and the right half is synthesized and output to the second display screen.
To illustrate the working process of the device more clearly, the following examples are given:
the touch screen matched with the first display screen is the first touch screen, the name of the corresponding first virtual touch device is VNm _ A, the touch screen matched with the second display screen is the second touch screen, and the name of the corresponding second virtual touch device is VNm _ B.
Window 2_1 of the current client system sends display data (e.g., a web interface) to shared hardware layer 1_1, which is displayed on a first display screen, and a first virtual touch device VNm _ A is mounted on a first virtual touch channel VCh _ 1; window 2_2 of the client system sends display data (e.g., video pictures) to shared hardware layer 2_1, which is displayed on a second display screen and second virtual touch channel device VNm _ B is mounted on second virtual touch channel VCh _ 2.
After the client window manager receives the instruction of screen changing display of the switching module:
1) switching of display content
The method comprises the steps that a shared output configuration module obtains window configuration parameters of a shared hardware layer 1_1 and a shared hardware layer 2_1 and sends the window configuration parameters to a client window manager of a client system, wherein the window configuration parameters comprise window size, window number, layer longitudinal sequence number and display format;
according to the preset corresponding relation between the window and the shared hardware layer, a client window manager of the client system sends display data (such as a video picture) and window configuration parameters of the shared hardware layer 1_1 to the shared hardware layer 2_1 through the window 2_1, a synthesizer synthesizes and outputs the display data according to the window configuration parameters and displays the display data on a first display screen, and sends display data (such as a web interface) of the window 2_2 of the client system and the window configuration parameters of the shared hardware layer 2_1 to the shared hardware layer 1_1, and the synthesizer synthesizes and outputs the display data according to the window configuration parameters and displays the display data on the first display screen.
2) Synchronized switching of touch data
a) The shared output configuration module outputs the display-changed window configuration parameters to the touch matching module while transmitting the window configuration parameters to a client window manager of the client system.
b) And the touch matching module unloads the virtual touch equipment corresponding to the touch screen matched with the display screen for exchanging the display content.
For example, in the present disclosure, if the display contents of the first display screen and the second display screen need to be exchanged, the first virtual touch device VNm _ a corresponding to the first touch screen associated with the first display screen and the second virtual touch device VNm _ B corresponding to the second touch screen associated with the second display screen are unloaded.
c) And determining the windows in the client system corresponding to the display screens after the display is exchanged.
For example, after display swapping, the first display corresponds to window 2_2, and the second display corresponds to window 2_ 1.
d) And the touch matching module determines a target virtual touch equipment channel for mounting the virtual touch equipment corresponding to the first display screen and the second display screen according to the matching relation between the client window and the virtual touch equipment channel, and mounts the corresponding virtual touch equipment.
For example, the virtual touch channel corresponding to the window 2_2 displayed on the first display screen is the second virtual touch channel VCh _2, so that the first virtual touch device VNm _ a corresponding to the first touch screen associated with the first display screen is mounted to the second virtual touch channel VCh _ 2;
the virtual touch channel corresponding to the window 2_1 displayed on the second display screen is the first virtual touch channel VCh _1, and therefore, the second virtual touch device VNm _ B corresponding to the second touch screen associated with the second display screen is mounted on the first virtual touch channel VCh _ 1.
d) And the touch distribution module sends the received touch data to the corresponding window through the corresponding virtual touch equipment channel.
For example, touch data of the virtual touch device VNm _ B (corresponding to the second touch screen) is distributed to the window 2_1 of the client system when received, and touch data of the virtual touch device VNm _ a (corresponding to the first touch screen) is distributed to the window 2_2 of the client system when received.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (9)
1. A multi-screen display switching method based on a virtual machine is characterized by comprising the following steps:
step 1, receiving a screen changing display instruction, and determining an initiating display screen and a target display screen;
step 2, determining a corresponding client window after the screen changing display of the initiating display screen and the target display screen;
step 3, determining a second matching relation according to a first matching relation, wherein the first matching relation is a matching relation between a client window and a virtual touch device channel, and the second matching relation is a target virtual touch device channel for mounting virtual touch devices corresponding to the initiating display screen and the target display screen;
step 4, re-mounting the virtual touch equipment corresponding to the initiating display screen and the target display screen according to the second matching relation;
and 5, sending the received touch data to a corresponding client window through a corresponding virtual touch device channel.
2. The virtual machine-based multi-screen display switching method according to claim 1, further comprising, before the step 1:
step A1, obtaining mounting information of a display device and a touch device, and generating a corresponding virtual touch device according to the touch device;
a2, acquiring the corresponding relation between a display screen and a display output channel;
and step A3, the host system loads the display content according to the display setting saved for the last time for display.
3. A virtual machine-based multi-display switching method according to claim 2, wherein the display device and the touch device are mounted in the same order.
4. The virtual machine-based multi-screen display switching method according to claim 1, wherein the step 4 comprises:
step 401, uninstalling virtual touch devices corresponding to the initiating display screen and the target display screen;
step 402, re-mounting the corresponding virtual touch device according to the second matching relationship.
5. A multi-screen display switching device based on a virtual machine is characterized by comprising:
the system comprises a first display component consisting of a first display screen and a first touch screen, a second display component consisting of a second display screen and a second touch screen, a host window set at least comprising a host window, a host window manager, a display data page, a shared display data page and a synthesizer, which are arranged in a host system, and a client window set at least comprising a client window, a client window manager, a shared output configuration module, a touch matching module, a touch distribution module and a switching module, which are arranged in a client system;
the host window set, the host window manager, the display data page, the shared display data page, the synthesizer and the first display assembly are sequentially connected, and the synthesizer is also connected with the shared display data page and the second display assembly; the client window set, the client window manager, the shared output configuration module, the touch matching module and the touch distribution module are sequentially connected, the client window manager is further connected with the switching module, the touch distribution module is further connected with the client window set, the shared output configuration module is connected with the shared display data page, and the touch matching module is further connected with the first display assembly and the second display assembly;
the display screen is used for receiving and displaying the display data sent by the synthesizer;
the touch screen is used for receiving touch information and generating touch data;
the window set is used for drawing a user interface or presenting a video stream;
the window manager is used for managing the creation, destruction and parameter configuration of the windows in the host system and the client system;
the display data page is used for receiving the window data sent by the window manager and caching the window data;
the shared display data page is used for directly mapping the data required to be displayed by the client system to the corresponding display data page in the host system;
the synthesizer is used for synthesizing the display data in the display data page or the shared display data page and outputting the synthesized display data to a corresponding display screen through a display output interface;
the shared output configuration module is used for acquiring configuration parameters of display change and sending the configuration parameters to a shared display data page and a touch matching module;
the touch matching module is used for matching a window in the virtual machine system with touch data generated by the touch screen;
the touch distribution module is used for distributing the received touch data to a window corresponding to the client system according to a preset matching relation between the window in the client system and the virtual touch equipment channel;
and the switching module is used for initiating a screen changing display instruction.
6. A multi-screen display switching apparatus based on a virtual machine according to claim 5, wherein the touch matching module is a virtual hardware device bus for mounting a virtual touch device, and includes: the touch control system comprises a first virtual touch device, a second virtual touch device, a first virtual touch channel and a second virtual touch channel;
the first virtual touch device corresponds to the first touch screen, and the second virtual touch device corresponds to the second touch screen.
7. A multi-screen display switching apparatus based on a virtual machine according to claim 6, wherein the touch matching module determines a target virtual touch device channel on which the virtual touch device corresponding to the first display screen and the second display screen is mounted according to a matching relationship between a client window and a virtual touch device channel.
8. A virtual machine-based multi-display switching device according to claim 5, wherein the display data page includes at least one display output channel, the display output channel includes at least one hardware layer, the shared display data page includes at least one shared display output channel, and the display output channel includes at least one shared hardware layer.
9. A virtual machine-based multi-display switching apparatus according to claim 8, wherein the shared display data page and the display data page establish a one-to-one correspondence relationship by way of direct mapping.
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