CN114238385A - Map page switching method and device - Google Patents

Abstract

The invention discloses a method and a device for switching map pages, wherein the method for switching the map pages comprises the following steps: responding to a map page switching request, comparing map state parameters in the map state structure data of a current display map page and a target map page to be displayed, and determining a map state which needs to take effect and/or does not need to take effect in the target map page to be displayed; and calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed. The method and the device have the advantages that the map surface stability of the map view is guaranteed, the map state changes in time when the map pages are switched, the page loading time is reduced, the target map page loading speed is high, and the user experience is improved.

Description

Map page switching method and device

Technical Field

The present invention relates to the field of data processing technologies, and in particular, to a method and an apparatus for switching a map page.

Background

Different map pages can be displayed in a map View, for example, a main map page, a search result page, a route planning page, a navigation page, a seismic map page, an environmental map page and the like, each map page can record own map state and changes thereof, in order to prevent the map state added or changed in the current map page from being brought to a target map page, and the map state of the target map page is disordered, in the process of switching the map page, not only relevant rendering elements of elements which cannot be displayed in the target map page in the current map page are disabled, but also relevant rendering elements of the elements which need to be displayed in the target map page are enabled to take effect in the map View (View). For example, referring to fig. 1a and 1B, which are schematic diagrams of a main map page and a search result page, respectively, assuming that a map view shows the main map page shown in fig. 1a when a user opens a map application, and after the user searches for "hang mountain international airport" in the main map page, the map view is switched from the main map page shown in fig. 1a to the search result page shown in fig. 1B, in order to ensure that a position icon a (i.e., a circle plus an arrow in fig. 1 a) in the main map page is not brought to the search result page (because the position icon a is not required to be displayed in the search result page), an Overlay layer (Overlay) for displaying a position icon a in a map state of the main map page needs to be disabled, i.e., the Overlay layer (Overlay) for displaying the position icon a is deleted, and at the same time, an icon B (i.e., the airport international airport) for displaying a destination "hang mountain international airport" in the search result page is required to be disabled during page switching Airplane shape identification), the map layer displaying the icon B needs to be validated in the map state of the search result page, that is, an overlay layer for displaying the icon B is added to the search result page. Therefore, because the rendering requirements of different pages are different, in order to avoid errors in page display, rendering engines for rendering the pages need to correctly control the states of corresponding rendering elements according to the rendering requirements of the different pages, and complex control logic is needed to control under the condition that the rendering elements are numerous, so that the rendering efficiency is greatly influenced, the switched pages cannot be displayed in time, and bad experience is brought to users.

Disclosure of Invention

In view of the above, the present invention has been made to provide a map page switching method and apparatus that overcomes or at least partially solves the above problems.

The embodiment of the invention provides a map page switching method, which comprises the following steps:

responding to a map page switching request, comparing map state parameters in the map state structure data of a current display map page and a target map page to be displayed, and determining a map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

and calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed.

The embodiment of the invention provides a map page switching device, which comprises:

the result determining module is used for responding to the switching request of the map page, comparing the map state parameters in the map state structure data of the current display map page and the target map page to be displayed, and determining the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

and the map view module is used for calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed.

The embodiment of the invention provides a map client, which comprises: the system comprises a page framework engine, a virtual map engine, a rendering engine and a dynamic page interaction engine;

the page framework engine is used for responding to a map page switching request, driving the dynamic page interaction engine to create a dynamic function view and/or draw an interface control, and driving the virtual map engine to compare map state parameters in the map state structure data of the current display map page and the target map page to be displayed;

the dynamic page interaction engine is used for creating a dynamic function view and/or a drawing interface control;

the virtual map engine is used for comparing map state parameters in the map state structure data of the current display map page and the target map page to be displayed, determining the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed, and determining and calling the rendering engine interface corresponding to the map state which needs to take effect and/or does not need to take effect;

and the rendering engine is used for rendering the map data corresponding to the map state through the called interface of the rendering engine corresponding to the map state to obtain a target map page to be displayed.

An embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, and the instructions, when executed by a processor, implement the above-mentioned map page switching method.

The embodiment of the invention provides a map device, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the map page switching method is realized.

The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:

according to the map page switching method provided by the embodiment of the invention, when the map page is switched, because the current map page and the target map page both correspond to the same map view, at least one map state to be validated and/or restored in the map view when the target map page is generated can be obtained by comparing the map states between the two map pages, and the rendering engine interface is called to perform map rendering according to the at least one map state to be validated and/or restored in the map view when the map page is switched, so that the at least one map state to be validated and/or restored takes effect and/or restores in the map view. Therefore, only the states of the map to be validated and/or restored in the map view need to be concerned, the restoration of the map state needing to be restored to the original state in the current page can be realized, and the map state needing to be validated in the target page can be validated, so that the target map page is obtained. Therefore, the current map page and the target map page do not need to be respectively subjected to rendering engine interface calling logic control as in the prior art, control logic between the map pages does not need to be concerned, the map state management of the map pages is simple, the development and maintenance cost of the map state management is reduced, the map state management is prevented from being disordered, the map stability of the map view is ensured, the map state changes in time when the map pages are switched, the page loading time is reduced, the target map page loading speed is high, and the user experience is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIGS. 1 a-1 d are schematic diagrams of a map page shown in a map view;

FIG. 2 is a flowchart illustrating a method for switching a map page according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a map page frame system implementation principle during page switching in the prior art;

FIG. 4 is a schematic diagram illustrating an implementation principle of a map page framework system during page switching according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a map page switching device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a map application client according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the prior art, when a map is subjected to page conversion, the map state management logic is complex, the development and maintenance cost of the map state management is increased, the map state change is not timely, and the page loading speed of a target map is low. In order to solve the above problems in the prior art, an embodiment of the present invention provides a method for switching a map page, in which a map state difference result is obtained by comparing map state structure data of a current map page and a target map page, and a rendering engine interface is invoked according to the map state difference result to generate the target map page. The problems that the development and maintenance cost of map state management is high, the map state management is disordered and the map state change is not timely when pages are switched are solved, the development and maintenance cost of the map state management is reduced, the map state management is avoided being disordered, the map page switching is timely, the map surface stability of a map view is guaranteed, and the user experience is improved.

An embodiment of the present invention provides a method for switching a map page, which is shown in fig. 2 and includes the following steps:

s11: responding to a map page switching request, comparing map state parameters in the map state structure data of a current display map page and a target map page to be displayed, and determining a map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

the current map page and the target map page may be any one of a main map page, a search result page, a route planning page, a navigation page, an earthquake map page, an environment map page, a public transportation map page, a charging station map page, a convenience merchant map page, and a footprint map page. Referring to fig. 1a to 1d, which are schematic diagrams of a main map page, a search result page, a route planning page, and a navigation page, respectively, styles of other map pages may also be displayed in a map view of a map application, and are not displayed one by one here.

S12: and calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed.

The comparing, described in the step S11, the map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed may specifically include:

acquiring the latest map state structure data of the current display map page and the target map page to be displayed;

and comparing the map state parameters in the latest map state structure data of the current display map page and the target map page to be displayed.

In the embodiment of the present invention, the latest map state structure data of the currently displayed map page and the map page to be displayed may be initial map state structure data obtained when the map page is created, or updated map state structure data obtained after the map state parameters in the map state structure data are updated when the map state changes.

In the embodiment of the invention, when the map page is created, the initial map state structure data of the map page can be obtained in the following way:

when a map page is created, configuring initial map state structure data of the map page according to a preset data rule; or the like, or, alternatively,

when the map page is created, the initial map state structure data of the map page configured according to the preset data rule is obtained from the map server.

In a specific embodiment, when creating a map page, first obtaining identity information of a used object, and generating initial map state structure data of the map page according to a preset data rule corresponding to the identity information of the used object. The identity information of the use object may be, for example, information that the use object is a driver or a passenger; the preset data rule may be a type of the map states and the number of the map states included in the map state structure data. For example, when the map application is opened by using the object, the identity information of the object is acquired, and if the object is the driver, the map state structure data of each map page suitable for the driver is generated according to the preset data rule corresponding to the driver.

In a specific embodiment, when creating the map page, first obtaining the identity information of the object to be used, and obtaining the initial map state structure data of the map page generated according to the preset data rule from the map server according to the identity information of the object to be used. For example, in the map server, map state structure data of each map page corresponding to different identities of the use object is generated according to a preset data rule, the map state structure data comprises map state structure data of each map page corresponding to a driver and a passenger, and when the use object is determined to be the driver or the passenger according to the identity information of the use object, initial map state structure data of each map page corresponding to the driver or the passenger is obtained from the map server.

In the embodiment of the present invention, the map state may include at least one of a map style, a switch state of the map, a map posture, and a layer state of the map. The map mode can be a map mode, for example, a standard map, a satellite map, a public transportation map and other map modes; the map switch state may be a state of a map function switch, such as whether to turn on a road condition switch, whether to turn on a building map display switch, whether to turn on a thermodynamic diagram display switch, whether to turn on a point of interest display switch, and the like; the map pose may include: the position of the center point of the map, the scale of the map, the elevation angle of the map, the roll angle of the map and the like; the layer state of the map may include whether an Open layer (Open layer) is displayed or not, whether an Overlay layer (Overlay) of the map is displayed or not, and the like, where the Open layer includes an Open road condition event layer, the road condition event in the embodiment of the present invention may be road condition information such as whether a road has a traffic accident or not, whether the road is being covered, and the Overlay of the map includes a point Overlay or a route (Line) Overlay on the map.

In the embodiment of the invention, when the map page is created to obtain the initial map state structure data of the map page, the described preset data rule can be set according to the requirement of the actual map. For example, when the map state structure data includes map pattern data, on-off state data, map attitude data, and layer state data, the map state structure data may be set in a manner that the map pattern data, the on-off state data, the map attitude data, and the layer state data are arranged in a preset order, and a preset character is used to represent a parameter value of each map state, for example, numbers 0, 1, and 2 are used to represent a standard map pattern, a satellite map pattern, and a public transportation map pattern in the map pattern, numbers 0 and 1 are used to represent on-off states of each map function switch as off and on, longitude and latitude values are used to represent center point information in the map attitude data, and an identity information ID is used to distinguish different superimposed layers and open layers.

In an embodiment, the map page switching method provided in the embodiment of the present invention further includes: when a request for modifying the map state of the map page is received, the map state structure data of the map page is updated according to the request, and the updated map state structure data of the map page is obtained.

Assuming that after the map is initialized, the map view is in a current display map page (such as a main map page), that is, the switching of the map page is not started yet, the map state structure data of the current map page and other map pages are both initial map state structure data, when a request for modifying the map state of the map page is received, that is, the map state in the map view needs to be changed, for example, when a map style is switched and a building display switch is turned on or off, the initial map state structure data of the current map page and other map pages are updated according to the request, so as to obtain updated map state structure data. Of course, if a plurality of different requests for modifying the map state of the map page are received or a request for modifying the map state of the map page is continuously received, that is, the map state in the map view needs to be changed for a plurality of times or continuously, the map state structure data needs to be updated for a plurality of times or continuously, and finally the latest map state structure data of the current map page and other map pages is obtained.

In one embodiment, in order to reduce the data transmission amount between map pages and reduce the page switching time, when the initial map state structure data of a map page is configured according to a preset data rule, if the map page is configured as a map page to be displayed in the initial map state structure data of the map page, the map state parameter in the map state structure data of the map page is set to be inherited. The corresponding map state parameter in the map state structure data of the previous map page (namely the currently displayed map page in the map view) is inherited by setting the map state parameter in the map state structure data of the map page to be inherited.

Specifically, when the map state parameter in the map state structure data of the target map page to be displayed is set to inherit, the corresponding map state parameter in the map state structure data of the currently displayed map page may be inherited into the map state structure data of the target map page to be displayed in response to the map page switching request.

The map state parameters in the map state structure data of the map page are set to be inherited when the map page is switched, the target map page to be displayed can directly inherit the corresponding map state parameters of the current displayed map page, the map state corresponding to the inherited map state parameters is not required to be operated in the map view, and the target map page to be displayed only needs to enable the map state required to be effective in the self page to be effective in the map view, so that the data transmission quantity among the map pages is reduced, the loading time of the target map page can be reduced, and the page loading speed is improved.

In an embodiment, the determining, in response to the map page switching request, the map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed, which are described in the step S11, that need to be validated and/or need not be validated in the target map page to be displayed may specifically include:

responding to the map page switching request, and performing at least one comparison operation as follows:

comparing map style parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain a map style which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing the switch state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the switch state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing map attitude parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain map attitudes which need to take effect and/or do not need to take effect in the target map page to be displayed;

and comparing the layer state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the layer state which needs to take effect and/or does not need to take effect in the target map page to be displayed.

In a specific embodiment, the comparing the layer state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the layer state that needs to be effective and/or does not need to be effective in the target map page to be displayed specifically may include:

comparing the overlay layer identity information in the overlay layer state parameter values of the current display map page and the target map page to be displayed, and determining whether to add or delete the corresponding overlay layer in the target map page to be displayed;

and comparing the identity information and the on-off state information of the open layer in the open layer state parameter values of the current display map page and the target map page to be displayed, and determining whether to open or close the corresponding open layer in the target map page to be displayed.

In an embodiment, the invoking of the interface of the rendering engine corresponding to the map state and the rendering of the map data corresponding to the map state to obtain the target map page to be displayed in step S12 may specifically include:

determining a rendering engine interface corresponding to the map state which needs to take effect and/or does not need to take effect according to the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

and calling the rendering engine interface, and rendering the map data corresponding to the map state needing to be effective and/or not needing to be effective to obtain a target map page to be displayed.

In a specific embodiment, for example, at least one rendering engine interface to be invoked may be determined according to a map state that needs to be validated and/or does not need to be validated in a target map page to be displayed; and uniformly calling the at least one rendering engine interface, and rendering map data corresponding to at least one of a map style, a switch state parameter value, a map posture parameter value and a layer state parameter value in the map state which needs to be effective and/or does not need to be effective through the rendering engine according to the at least one of the map style parameter value, the switch state parameter value, the map posture parameter value and the layer state parameter value in the map state which needs to be effective and/or does not need to be effective, so that at least one of the map style, the switch state, the map posture and the layer state in the map view is adjusted, and a target map page to be displayed is obtained.

In a specific embodiment, for example, when the page B is switched to the page a, the acquired map state structure data of the page B includes an ID of the route Overlay 1 and an ID of the route Overlay 2, and the parameter value of the road condition event switch indicates that the road condition event switch is turned off; the acquired map state structure data of the page A comprises the ID of the route Overlay 1 and the ID of the route Overlay 3, and the parameter value of the road condition event switch indicates that the road condition event switch is turned on; comparing the map state structure data of the page B with the map state structure data of the page A, and obtaining the result of the map state which needs to take effect and/or does not need to take effect in the page A, namely deleting the route Overlay 2, namely, the route Overlay 2 is invisible in a map view, adding the route Overlay 3, namely, the route Overlay 3 is visible in the map view, and opening a road condition event switch. Then, according to the result of the map state which needs to take effect and/or does not need to take effect in the page a, the route Overlay 2 is called and deleted, the route Overlay 3 is added, and the corresponding rendering engine interface is opened by the road condition event switch, so that the route Overlay 2 can be rendered invisible through the rendering engine, the route Overlay 3 can be rendered visible, and the road condition event data can be rendered into the map view.

In one embodiment, when a current display map page is switched to a target map page to be displayed, the map page switching method provided by the embodiment of the invention can also respond to the map page switching request when receiving a map page switching request, and provide the target map page to be displayed with a map state that the current display map page is effective and can be shared; if the target map page to be displayed needs the map state which is effective and sharable for the current map page to be displayed, sharing confirmation information can be returned; responding to the sharing confirmation information of the target map page to be displayed, and transmitting the parameter of the sharable map state selected by the target map page to be displayed to the target map page to be displayed; and updating the map state structure data of the target map page to be displayed according to the transmitted parameters of the map state.

In the embodiment of the invention, the map state of the current display map page is shared to the target map page by predetermining the map state parameters which can be shared among the map pages. For example, when the map center point in the map posture is changed and the map center point of the current display map page is switched from shanghai to beijing, in order to ensure that the posture of the target map page to be displayed is accurate when the map page is switched, the map center point position information of the current display map page can be transmitted to the target map page to be displayed, so that the target map page to be displayed obtains the map center point of the map view to be displayed of the target map page to be displayed according to the center point information of the current display map page, and the map center point parameter value is updated to the map state structure data of the target map page to be displayed.

In a specific embodiment, referring to fig. 1C and fig. 1d, which are schematic diagrams of a route planning page and a navigation page respectively, assuming that a map page to be generated is switched from the route planning page to the navigation page, if it is known that a vehicle logo icon C displayed in the route planning page also needs to be displayed in the navigation page (that is, a circle in fig. 1C includes a triangular arrow shape identifier), a parameter of an Overlay layer (Overlay) of the vehicle logo icon C may be predetermined to be transmitted between the route planning page and the navigation page, when the page is switched, a parameter of the Overlay layer (Overlay) of the vehicle logo icon C is transmitted to the navigation page, the Overlay layer (Overlay) of the vehicle logo icon C is enabled to be effective in the navigation page, and map state structure data of the navigation page is updated according to the parameter of the Overlay layer (Overlay) of the vehicle logo icon C.

The contribution of the embodiment of the present invention is described below by the structural difference of the system architecture adopted in the map view generation of the map generation method provided by the prior art and the embodiment of the present invention:

referring to fig. 3, in the map page switching, because the map page system architecture of the prior art maintains a map state unique to each map page (including page a, page B, and page C), for a map view, each map page has a set of recording and restoring control logic for the map state, and the page architecture engine directly operates on the map page through the control logic to record which map states the map page has changed. The current display map page needs to record which map states of the map page before the map page is changed and what new map states are added; the target map page to be displayed needs to record the map state corresponding to the map view to be generated, and whether the change of the map state of the currently displayed map page affects the display of the map view needs to be concerned when the page is switched.

In a specific embodiment, it is assumed that the route Overlay 1 in the page a is invisible and the route Overlay 1 in the page B is visible, when switching from the page a (without the route Overlay 1) to the page B, the page B driver is required to set the route Overlay 1 to visible, when switching back to the page a from the page B is required, the page B driver is required to remove the route Overlay 1, otherwise, the route Overlay 1 is brought back to the page a, so that a map state error of the page a is caused, that is, an effective map state in the map view is not a real map state of the page a. That is to say, when a map page is switched, the page a needs to pay attention not only to the map state of the own page to be validated, but also to the map state restoration logic of the page B, so that the page B restores all the map states of the own page, which are changed or newly added, to the original map state.

When a map view is generated, referring to fig. 3, taking switching from page B to page a as an example, not only the page a is required to sequentially invoke different rendering engine interfaces to change and newly add a map state to be validated in the map view, but also the page B is required to sequentially invoke different rendering engine interfaces to restore the added or changed map state to an initial map state, and this way of simultaneously invoking the rendering engine interfaces to render map data for a target map page to be displayed and a currently displayed map page, because the rendering requirements of different pages are different, in order to avoid page display errors, rendering engines rendering these pages need to correctly control the states of corresponding rendering elements according to the rendering requirements of different pages, and in the case of numerous rendering elements, complex control logic is required to control, which greatly affects rendering efficiency, the switched page cannot be displayed in time, and bad experience is brought to the user.

In a specific embodiment, in order to ensure that a map view has a stable map surface when a map page is switched in a map page system architecture in the prior art, before the map page is switched, a map state shared between a current map page and a target map page needs to be determined, and map data corresponding to the map state shared in the current map page is transmitted to the target map page as a parameter when the map page is switched, so that a large amount of data is transmitted between pages. Assuming that when the page A is switched to the page B, if the route Overlay 1 is needed to be visible in both the page A and the page B, in order that the route Overlay 1 does not flicker in a map view when the map page is switched, the route Overlay 1 can be shared between the page A and the page B, and when the map page is switched, a page framework engine of the page A is needed to pack and organize the complete data of the route Overlay 1 into a data structure, and then the data structure is transmitted to the page B as a parameter; the complete data of the route Overlay 1 refers to all attribute features of the route Overlay 1, such as attribute features of each shape point, route color, route width, and the like of the route Overlay. The data volume transmitted among the map pages is large, the data transmission time is prolonged, the loading time of the target map page is prolonged, and the target map page after switching cannot be displayed in time.

Referring to fig. 4, in order to maintain a unique map state of each map page (including page a, page B, and page C) in a map page system architecture, a map state structure corresponding to each map page is abstracted from a real map view, where the abstracted map state structure of the map page is referred to as a virtual map, and a virtual map engine is responsible for maintaining map state structure data of each map page. And constructing a virtual map A, a virtual map C and a virtual map C in a virtual map engine, wherein the virtual map A, the virtual map C and the virtual map C are respectively responsible for maintaining map state structure data of the page A, the page B and the page C. When the map state of the map page needs to be modified, the page framework engine respectively updates the parameter values of the corresponding map state to the virtual map aiming at each map page to obtain the updated map state structure data. When the page is switched, the map state Diff interface of the virtual map engine compares the map state parameters in the map state structure data of the virtual map corresponding to the current map page and the target map page to obtain the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed. In the embodiment of the present invention, since the map state that needs to take effect and/or does not need to take effect in the target map page to be displayed is the difference result obtained by comparing the map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed, for convenience of description, the map state that needs to take effect and/or does not need to take effect in the target map page to be displayed is referred to as the map state difference result.

When the target map page to be displayed is obtained, referring to fig. 4, the data analysis adapter of the virtual map engine uniformly calls the rendering engine interface according to the finally obtained map state difference result, so as to sequentially realize the rendering of different map states, and enable the map states to take effect in the map view, thereby obtaining the target map page to be displayed. Therefore, each map page only needs to be responsible for updating the map state structure data corresponding to the own page, does not pay attention to whether other pages change the map state or not, does not need to pay attention to the influence of the map states of other pages on the map view stability, has simple processing logic during page switching, and is convenient to maintain the map state, thereby reducing the development and maintenance cost of map state management and avoiding the disorder of the map state management. In addition, the current map page and the target map page do not need to be respectively subjected to rendering engine interface calling logic control as in the prior art, control logic between the map pages does not need to be concerned, the map state changes in time when the map pages are switched, the page loading time is reduced, the target map page loading speed is high, and the user experience is improved.

In the embodiment of the invention, the map state in the map state structure data can be divided into a map style, a map switch state, a map posture and a map layer state according to the type of the map state, and if the page is switched from a page B to a page A, when the map state structure data of the virtual map A and the virtual map B are compared (Diff), the map style parameter value, the map switch state parameter value, the map posture parameter value and the map layer state parameter value of the map can be compared one by one, and the map state which needs to take effect and/or does not need to take effect is recorded; it should be noted that, when comparing layer states of a map, each layer (layer) includes an attribute list (Item list), such as attribute information of each shape point of route Overlay data, and attribute information of size, color, and the like of a point Overlay, so that deep copy may be performed on each layer state data of page a and page B, comparison of each attribute information is performed on each layer state data, and a map state that needs validation and/or does not need validation in the layer states of the two pages is determined. In order to improve the efficiency of layer state comparison and save page switching time, in the embodiment of the invention, only the identity information IDs of the layer states of the map state structure data of the virtual map A and the virtual map B can be compared, and other attribute information is not compared.

In one embodiment, for example, when switching from page B to page a, it is assumed that the map state structure data of the virtual map B includes an ID of route Overlay 1 and an ID of route Overlay 2, and the parameter value of the road condition event switch indicates that the road condition event switch is turned off; the map state structure data of the virtual map A comprises the ID of a route Overlay 1 and the ID of a route Overlay 3, the parameter value of a road condition event switch indicates that the road condition event switch is turned on, a map state Diff interface is compared with the map state structure data of the virtual map A and the virtual map B, the obtained map state difference result is that when the map state difference result is switched to the page A, the route Overlay 2 is invisible, the route Overlay 3 is visible, and the road condition event switch is turned on, then a rendering engine interface is called by a data analysis switching interface according to the map state difference result obtained by the map state Diff interface, the route Overlay 2 can be rendered invisible through a rendering engine, the route Overlay 3 can be rendered visible, and the road condition event data can be rendered to the map view.

In the embodiment of the invention, the default map state of each map page can be customized in the map state structure by adopting the preset data rule at the initial time to obtain the initial map state structure data of each map page, and the map state relation can be transmitted among the pages by adopting the dynamic parameters when the map state changes. For example, the map state structure data is expressed by using a Domain-specific language (DSL) rule, the initial map state structure data is expressed by using a static DSL, and the map state relationship is transferred between pages by using a dynamic DSL language, thereby updating the map state structure data. By adopting the map state structure data in accordance with the DSL rule, the map state visualization can be realized, a rendering engine interface is not required to be concerned, and any data in accordance with the DSL rule can realize the map state required by each map page in the map view.

In the embodiment of the present invention, the initial map state structure data expressed by using the static DSL may be pre-configured in the map application according to the identity information of different usage objects and according to preset data rules, or may be stored in the map server and acquired from the map server. When the map view is initialized, the identity information of the using object is acquired, the initial map state structure data of the map page is enabled to take effect in the map view, and the corresponding map view is provided for the using objects with different identities, so that the individuation and the customization of maps for different using objects are realized.

In the embodiment of the invention, when the initial map state structure data of each map page is configured, whether each map page inherits the map state of the previous map page can be configured, and whether the inherited fields in the static DSL of the page are marked during configuration. For example, if the initial map state structure data of the virtual map B corresponding to the page B is configured such that the page B inherits the map state of the previous map page, when switching from the page a to the page B, the parameter corresponding to the map state of the page a can be inherited to the page B, so that the inheritable map state that has been in effect on the map view is maintained without repeated rendering, and only the map data corresponding to the map state difference result needs to be rendered, so that the map state that is expected to be updated in the page B takes effect on the map view. Because only one map view is needed in the map application, the page A is not required to transmit the corresponding map data of the shared map state to the page B, and the data volume of parameters transmitted among the pages is reduced, so that the loading time of the page B is reduced, and the page loading speed is improved. Of course, if only the partial map state of the previous map page needs to be inherited by the page B when the map page is switched, the partial map state that needs to be inherited can be marked in the field configured to be inherited in the static DSL of the virtual map B of the page B.

In one particular embodiment, assume that page A is visible at points Overlay 1, Overlay 2 and Overlay 3 in the map view, if the map state parameter of the configuration point Overlay 2 in the virtual map B corresponding to the page B is inherited, then, when switching from page a to page B, page B may inherit the point Overlay 2 in the map state of page a to be visible in the map view, since the virtual map B corresponding to the page B does not have the map state parameters of the configuration point Overlay 1 and the configuration point Overlay 2 as inheritance, by comparing the map state parameters in the map state structure data of page a and page B, it can be determined that the undesirable points Overlay 1 and Overlay 3 are visible in page B, and then, calling interfaces of the Overlay 1 and the Overlay 3, rendering the map data corresponding to the Overlay 1 and the Overlay 3, and enabling the Overlay 1 and the Overlay 3 to be hidden and invisible on the page B.

In the embodiment of the invention, when a map page switching request is received, the parameter of the map state which is effective and can be shared by a target map page is transmitted to the target map page in a dynamic DSL language mode, the map state which needs to be shared is expressed as the parameter of the dynamic DSL language and is transmitted to the target map page, and the map state structure data of a virtual map B is updated by the target map page according to the transmitted parameter of the dynamic DSL language.

The page switching method provided by the embodiment of the invention provides a way of mutually exchanging the map states among the pages by expressing the parameters of the transferable map states among the pages through the dynamic DSL language, for example, if the map pages are switched, the center point of the default map posture in the virtual map B of the page B is Beijing, and the center point of the map posture is Shanghai represented by the parameters of the map states transferred to the page B through the dynamic DSL mode through the page A, the parameter value of the center point of the map posture in the virtual map B can be modified to Shanghai when the page A is switched to the page B, so that the final center point of the page B in the map view becomes Shanghai.

Compared with the map page switching method provided by the embodiment of the invention, the map page switching method in the prior art can show that the map state of the previous map page can not be correctly recovered and can be brought back to the target map page easily during the map page switching, so that the map state in the map view is wrong. For example, taking a footprint map as an example, if a map page switching method in the prior art is adopted, if a user uses a page link (Scheme) or a two-dimensional code to share a footprint map page with other users, and after the other users enter the footprint map page through the Scheme or the two-dimensional code, if the map page is to be switched back to the original map page, the map state of the footprint map page is easily brought back to the original map page, so that the map state of the map page is in error. Thus, the mapping applications provided in the prior art generally do not provide footprint map page sharing.

By the map page switching method provided by the embodiment of the invention, the map state management is prevented from being disordered, so that the page display is prevented from being wrong, the image stability of the map view is ensured, when the footprint map page is shared to other used objects by using the objects in a page link (Scheme) or two-dimensional code mode, the map state of the target map page is stable when the footprint map page is switched back to the original map page after the other used objects enter the footprint map page through the Scheme or the two-dimensional code, and the image stability of the map view can be ensured, so that an entrance for sharing the footprint map page can be safely provided in map application, and the objects can be used for sharing the footprint map page.

In a specific embodiment, the specific implementation steps of the map page switching method provided in the embodiment of the present invention may be executed by a map client, where the map client includes a dynamic page interaction engine, a page framework engine, a virtual map engine, and a rendering engine. The map application client may receive a request to modify a map state of a map page through a dynamic page interaction engine, which, in response to the request to modify the map state of the map page, drives a virtual map engine to modify a map state parameter value of map state structure data of the map page.

When the page is switched, a page framework engine (or called a page frame) receives a map page switching request, responds to the map page switching request, and drives a virtual engine to compare map state parameters in map state structure data of a current display map page and a target map page to be displayed; the virtual map engine compares map state parameters in the map state structure data of the current display map page and the target map page to be displayed, determines the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed, and determines and calls a rendering engine interface corresponding to the map state which needs to take effect and/or does not need to take effect; then, the rendering engine loads, analyzes and renders map data through the called interface of the rendering engine corresponding to the map state, so that the map state needing to take effect takes effect in the map view, and the map state not needing to take effect is invalid in the map view, and a target map page is obtained; meanwhile, because the map not only needs to have map state data, but also the map view of the map page is dynamically changed, and the dynamic function view of the page needs to be displayed in the map view, the page framework engine of the map client also needs to determine the dynamic function view and the interface control to be effective in the map view, and drive the dynamic page interaction engine to create the dynamic function view and/or draw the interface control, so that the dynamic page interaction engine creates the dynamic function view and/or draws the interface control, and displays the dynamic function view and/or the drawing interface control in the target map page.

In the embodiment of the present invention, the specific process of map rendering may refer to a method in the prior art, and therefore, implementation manners of displaying various map elements such as roads, buildings, interest points, and the like, controlling map gestures such as a map center point and a pitch angle, drawing various controls such as a map button or list, and controlling dynamic function views such as a page animation and the like in a map view are implemented, and are not described herein again.

Based on the same inventive concept, embodiments of the present invention further provide a map page switching device, a map application client, a related storage medium, and a map service, and because the principles of the problems solved by these devices, related storage media, and services are similar to the map page switching method, the implementation of the devices, related storage media, and services may refer to the implementation of the foregoing method, and repeated details are omitted.

An embodiment of the present invention provides a map page switching apparatus, as shown in fig. 5, including:

the result determining module 101 is configured to respond to a map page switching request, compare map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed, and determine a map state that needs to take effect and/or does not need to take effect in the target map page to be displayed;

and the map view module 102 is configured to invoke an interface of a rendering engine corresponding to the map state, and render the map data corresponding to the map state to obtain a target map page to be displayed.

In an embodiment, the result determining module 101 is specifically configured to obtain the latest map state structure data of the current display map page and the target map page to be displayed;

and comparing the map state parameters in the latest map state structure data of the current display map page and the target map page to be displayed.

In an embodiment, the map page switching apparatus further includes an inheriting module, configured to, when the map state parameter in the map state structure data of the target map page to be displayed is set to inherit, respond to the map page switching request, inherit the corresponding map state parameter in the map state structure data of the currently displayed map page into the map state structure data of the target map page to be displayed.

In one embodiment, the map page switching apparatus further includes a sharing module, configured to provide, in response to the map page switching request, the map state that the currently displayed map page is valid and sharable to the target map page to be displayed;

responding to the sharing confirmation information of the target map page to be displayed, and transmitting the parameter of the sharable map state selected by the target map page to be displayed to the target map page to be displayed;

and updating the map state structure data of the target map page to be displayed according to the transmitted parameters of the map state.

In an embodiment, the result determining module 101 is specifically configured to, in response to the map page switching request, perform at least one of the following comparison operations:

comparing map style parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain a map style which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing the switch state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the switch state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing map attitude parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain map attitudes which need to take effect and/or do not need to take effect in the target map page to be displayed;

and comparing the layer state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the layer state which needs to take effect and/or does not need to take effect in the target map page to be displayed.

In one embodiment, the result determining module 101 is specifically configured to compare the overlay identity information in the overlay state parameter values of the current display map page and the target map page to be displayed, and determine whether to add or delete a corresponding overlay in the target map page to be displayed;

and comparing the identity information and the on-off state information of the open layer in the open layer state parameter values of the current display map page and the target map page to be displayed, and determining whether to open or close the corresponding open layer in the target map page to be displayed.

An embodiment of the present invention provides a map client, shown in fig. 6, including: a page framework engine 201, a dynamic page interaction engine 202, a virtual map engine 203 and a rendering engine 204;

the page framework engine 201 is configured to, in response to a map page switching request, drive the dynamic page interaction engine 202 to create a dynamic function view and/or draw an interface control, and drive the virtual map engine 203 to compare map state parameters in map state structure data of a currently displayed map page and a target map page to be displayed;

the dynamic page interaction engine 202 is configured to create a dynamic function view and/or a drawing interface control;

the virtual map engine 203 is configured to compare map state parameters in the map state structure data of the current display map page and the target map page to be displayed, determine a map state that needs to take effect and/or does not need to take effect in the target map page to be displayed, and determine and call a rendering engine interface corresponding to the map state that needs to take effect and/or does not need to take effect;

the rendering engine 204 is configured to render the map data corresponding to the map state through the interface of the called rendering engine corresponding to the map state to obtain a target map page to be displayed.

The embodiment of the invention also provides a computer-readable storage medium, which stores computer instructions, and the instructions are executed by a processor to realize the map page switching method.

The embodiment of the invention also provides a map service, and the map page switching method is executed when the service runs.

Unless specifically stated otherwise, terms such as processing, computing, calculating, determining, displaying, or the like, may refer to an action and/or process of one or more processing or computing systems or similar devices that manipulates and transforms data represented as physical (e.g., electronic) quantities within the processing system's registers and memories into other data similarly represented as physical quantities within the processing system's memories, registers or other such information storage, transmission or display devices. Information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. Of course, the processor and the storage medium may reside as discrete components in a user terminal.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in memory units and executed by processors. The memory unit may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

Claims (10)

1. A map page switching method includes:

responding to a map page switching request, comparing map state parameters in the map state structure data of a current display map page and a target map page to be displayed, and determining a map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

and calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed.

2. The method of claim 1, wherein comparing the map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed comprises:

acquiring the latest map state structure data of the current display map page and the target map page to be displayed;

and comparing the map state parameters in the latest map state structure data of the current display map page and the target map page to be displayed.

3. The method of claim 1, further comprising:

when the map state parameters in the map state structure data of the target map page to be displayed are set to be inherited, responding to the map page switching request, and inheriting the corresponding map state parameters in the map state structure data of the current display map page into the map state structure data of the target map page to be displayed.

4. The method of claim 1, further comprising:

responding to the map page switching request, and providing the map state which is effective and sharable in the current display map page to the target map page to be displayed;

responding to the sharing confirmation information of the target map page to be displayed, and transmitting the parameter of the sharable map state selected by the target map page to be displayed to the target map page to be displayed;

and updating the map state structure data of the target map page to be displayed according to the transmitted parameters of the map state.

5. The method according to any one of claims 1 to 4, wherein the determining of the map state which needs to be effective and/or does not need to be effective in the target map page to be displayed in response to the map page switching request by comparing the map state parameters in the map state structure data of the currently displayed map page and the target map page to be displayed comprises:

responding to the map page switching request, and performing at least one comparison operation as follows:

comparing map style parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain a map style which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing the switch state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the switch state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

comparing map attitude parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain map attitudes which need to take effect and/or do not need to take effect in the target map page to be displayed;

and comparing the layer state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain the layer state which needs to take effect and/or does not need to take effect in the target map page to be displayed.

6. The method according to claim 5, wherein the comparing layer state parameter values in the map state structure data of the current display map page and the target map page to be displayed to obtain a layer state that needs to be validated and/or does not need to be validated in the target map page to be displayed comprises:

comparing the overlay layer identity information in the overlay layer state parameter values of the current display map page and the target map page to be displayed, and determining whether to add or delete the corresponding overlay layer in the target map page to be displayed;

and comparing the identity information and the on-off state information of the open layer in the open layer state parameter values of the current display map page and the target map page to be displayed, and determining whether to open or close the corresponding open layer in the target map page to be displayed.

7. A map page switching apparatus comprising:

the result determining module is used for responding to the switching request of the map page, comparing the map state parameters in the map state structure data of the current display map page and the target map page to be displayed, and determining the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed;

and the map view module is used for calling an interface of a rendering engine corresponding to the map state, and rendering the map data corresponding to the map state to obtain a target map page to be displayed.

8. A map client, comprising: the system comprises a page framework engine, a virtual map engine, a rendering engine and a dynamic page interaction engine;

the page framework engine is used for responding to a map page switching request, driving the dynamic page interaction engine to create a dynamic function view and/or draw an interface control, and driving the virtual map engine to compare map state parameters in the map state structure data of the current display map page and the target map page to be displayed;

the dynamic page interaction engine is used for creating a dynamic function view and/or a drawing interface control;

the virtual map engine is used for comparing map state parameters in the map state structure data of the current display map page and the target map page to be displayed, determining the map state which needs to take effect and/or does not need to take effect in the target map page to be displayed, and determining and calling the rendering engine interface corresponding to the map state which needs to take effect and/or does not need to take effect;

and the rendering engine is used for rendering the map data corresponding to the map state through the called interface of the rendering engine corresponding to the map state to obtain a target map page to be displayed.

9. A computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the map page switching method of any one of claims 1-6.

10. A map service that when run performs the map page switching method of any of claims 1-6.

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