CN112464177A - Watermark full-coverage method and device - Google Patents
Watermark full-coverage method and device Download PDFInfo
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- 238000012423 maintenance Methods 0.000 claims description 21
- 230000003068 static effect Effects 0.000 claims description 11
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/106—Enforcing content protection by specific content processing
- G06F21/1063—Personalisation
Abstract
The application discloses a watermark full-coverage method and a watermark full-coverage device. A watermark full-covering method, comprising: when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction; and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file. By applying the technical scheme disclosed by the application, the watermark can be displayed in various use scenes of the terminal, and the dynamic configuration of the watermark by a user can be realized.
Description
Technical Field
The present application relates to the field of computer application technologies, and in particular, to a watermark full-coverage method and apparatus.
Background
The safety terminal mainly faces special client groups such as public security, prisons, electric power and the like. These customers have high standards for security and stability of the mobile phone, and also put forward special requirements which cannot be met by common customers. One of the key requirements included in this is: and (4) fully covering the watermark. Specifically, when a client uses a mobile phone, the top layer of a display interface of the mobile phone displays a watermark in any mobile phone using scene, so that the client can know which mobile phone the information flows from according to the watermark at any time when any confidential information flows out, and the method includes, but is not limited to, screen capture, taking a picture of the mobile phone by using other equipment, and the like.
The applicant finds that the existing watermarking technology exists in the process of implementing the invention: the problem that the above-mentioned requirement for full coverage of the watermark cannot be met or the user cannot dynamically configure the watermark according to the requirement is specifically analyzed as follows:
at present, there are two kinds of watermarking technologies applied to mobile phones, one is application-level watermarking, and the other is google native watermarking.
The application-level watermark is generally applied to camera application software of an Android system, the watermark technology can only be used in a camera APP, the watermark cannot be displayed when the camera APP is separated from the camera APP, and particularly cannot be displayed on a screen locking interface, so that the application scene of the application-level watermark is limited to a certain application, and the requirement of the watermark full coverage cannot be met.
The google native watermark technology can be displayed on the whole mobile phone, including a screen locking interface. However, the displayed watermark content can only be the watermark data preset in the operating system when the system is started for the first time, and since the watermark data is a system file existing in the files of the settings of the system, the file is not a file visible to the user at the application layer, the user cannot dynamically modify the watermark content thereafter, that is, the user cannot modify or cancel the display of the watermark, and the displayed watermark has a single function and can only be a simple text watermark.
Disclosure of Invention
The application provides a watermark full-coverage method and a watermark full-coverage device, which can display watermarks in various use scenes of a terminal and can realize dynamic configuration of the watermarks by a user.
A watermark full-covering method, comprising:
when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction;
and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file.
Preferably, the calling a preset system layer watermark generation interface to maintain the current dynamic watermark data file includes:
a. b, judging whether the incoming parameters meet a preset watermark configuration specification or not, and if so, executing the step b; otherwise, terminating the call;
b. determining the type of maintenance according to the incoming parameters;
c. if the maintenance type is the watermark emptying function, deleting the current dynamic watermark data file;
and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
Preferably, the generating a corresponding watermark data file according to the incoming parameters includes:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
Preferably, the generating a corresponding watermark data file according to the incoming parameters includes:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
Preferably, the system layer watermark generation interface is a mobile phone management tool MDM interface, a frame work interface or a service interface.
Preferably, the method further comprises:
when the user terminal is started, whether a dynamic watermark data file exists at present is detected, if yes, a watermark is drawn on a display screen according to the current dynamic watermark data file, otherwise, the watermark is drawn on the display screen according to a static watermark data file in the system.
A watermark flood coverage apparatus, comprising: a processor to:
when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction;
and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file.
Preferably, the processor is specifically configured to: calling a preset system layer watermark generation interface, and maintaining the current dynamic watermark data file, wherein the method comprises the following steps:
a. b, judging whether the incoming parameters meet a preset watermark configuration specification or not, and if so, executing the step b; otherwise, terminating the call;
b. determining the type of maintenance according to the incoming parameters;
c. if the maintenance type is the watermark emptying function, deleting the current dynamic watermark data file;
and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
Preferably, the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
Preferably, the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
Preferably, the system-layer watermark generating interface includes: cell phone management tool MDM interface.
Preferably, the processor is further configured to detect whether a dynamic watermark data file exists in a current system file when the user terminal is powered on, if so, draw a watermark on the display screen according to the current dynamic watermark data file, otherwise, draw a watermark on the display screen according to a static watermark data file in the system.
The present application also discloses a non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the steps of the watermark full coverage method as described above.
The application also discloses an electronic device comprising the non-volatile computer-readable storage medium as described above, and the processor having access to the non-volatile computer-readable storage medium.
According to the technical scheme, in the watermark full-coverage method and the device, the current dynamic watermark data file is maintained by using the preset watermark generation interface of the system layer, so that the terminal can generate the corresponding dynamic watermark data file which can be accessed by the system according to the dynamic watermark configuration instruction of the user. When the dynamic watermark data file is updated, the watermark is drawn according to the updated dynamic watermark data file, so that the following effects can be realized: the watermark can be displayed under various use scenes of the terminal.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 2 to fig. 4 are schematic diagrams of watermark display according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
Fig. 1 is a schematic flowchart of a watermark full-coverage method according to an embodiment of the present invention, and as shown in fig. 1, the method mainly includes:
Wherein, the incoming parameter of the system-layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction.
It should be noted here that, in order to ensure the security of the system in an operating system (e.g., an android system) of an existing terminal device, a system file directory is isolated from an application layer file directory accessible to a user in terms of access rights, so that the user cannot directly modify a watermark data file in the system. In this way, no matter what application scenario the terminal is in, the terminal operating system can perform watermark rendering according to the watermark data file (i.e. the dynamic watermark data file) dynamically configured by the user, so that: the user can dynamically configure the watermark according to the needs, and the watermark effect can be displayed on the uppermost layer of the display interface in various terminal use scenes.
The system layer watermark generation interface is a preset system layer interface so as to ensure that the watermark data file generated according to the watermark configuration instruction is a file which can be accessed by a terminal operating system. Preferably, the system layer watermark generation interface may be a mobile phone management tool MDM interface, a frame work interface, or a service interface, but is not limited thereto, as long as it is a system layer interface.
In practical application, the dynamic watermark data file may be stored in a specially defined system file directory, or may share the same system file directory with the static watermark data file of the system.
In this step, the specific receiving method of the watermark configuration instruction by the terminal may be implemented by using an existing method, and is not described herein again.
Preferably, in order to increase the flexibility of the maintenance of the dynamically generated watermark data file, the maintenance in this step may include clearing and updating the dynamically generated watermark data file. Specifically, a preset system-layer watermark generation interface may be called by the following method to maintain the current dynamic watermark data file:
step a, judging whether the incoming parameters meet a preset watermark configuration specification, if so, executing step b; otherwise, the call is terminated.
In this step, the specific setting of the watermark configuration specification may be set by a person skilled in the art according to actual needs, as long as it can be ensured that the system layer watermark generation interface can correctly maintain the current dynamic watermark data file according to the incoming parameters (for example, the incoming parameters need to be complete to support that a watermark can be drawn), and ensure the security of the dynamic watermark data file.
And b, determining the maintenance type according to the transmitted parameters.
C, if the maintenance type is the watermark clearing function, deleting the current dynamic watermark data file; and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
Preferably, in order to enrich displayable content of the watermark and increase the picture-type watermark content, so that the display of the watermark is not limited to characters and numbers, the method for generating the corresponding watermark data file according to the input parameters may be implemented by the following method:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
In practical application, when the watermark content includes text, numbers and other content, the watermark data file in the corresponding format can be realized by adopting a re-existing method, but for pictures, serialization processing is required.
It should be noted that in the above method, it is considered that, as mentioned above, the system file directory is isolated from the application layer file directory accessible by the user in terms of access rights, and only the user files of the underlying data type can be used by the system files through the operating system, so that, for the user file in the picture format, the system layer watermark generation interface cannot directly store the user file in the picture format, so that, in the above method, if the watermark content configured by the user includes the picture, then the picture format file corresponding to the picture needs to be serialized, the obtained serialized data file is saved as the watermark data file corresponding to the picture, therefore, the system can be ensured to access the watermark data file corresponding to the picture, and the dynamic configuration of the watermark content of the user and the full coverage effect of the watermark are realized.
Further, in order to facilitate maintenance of system developers, in the method, after the picture format file corresponding to the picture is serialized, the obtained serialized data file can be converted into a picture format file and then stored, so that the visual effect of the picture file is increased. For this purpose, the following method may be specifically adopted to generate a corresponding watermark data file according to the incoming parameters:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
In practical applications, in order to improve the generation efficiency of the watermark data file containing the picture, the picture indicated in the watermark configuration instruction may also be a static picture preset in a system file directory, the system may notify the user of the identifier of the preset picture through a static picture index text file, and the user may indicate the identifier for generating the watermark in the watermark configuration instruction. Therefore, when the watermarks are generated for the pictures, the system can directly acquire the corresponding static pictures according to the indicated picture identifications, and the pictures do not need to be serialized, so that the efficiency of dynamically configuring the watermarks can be improved.
And 102, when the dynamic watermark data file is updated, the user terminal draws the watermark on a display screen by using the updated dynamic watermark data file.
In this step, if the dynamic watermark data file is updated in step 101, that is, replaced with a new watermark data file, at this time, the new watermark data file needs to be used for watermark rendering, so as to achieve the effect of displaying the dynamic configuration watermark in real time.
In practical application, the watermark is drawn on the display screen based on the watermark data file, which can be implemented by using the existing method, for example, for an android system, the watermark content can be drawn by canvas, wherein the text is implemented by drawtext, and the picture is implemented by drawBitmap, which is not described in detail.
Further, in order to increase the full coverage effect of the watermark, meet the requirements of a user for dynamically configuring the watermark, and be compatible with the existing static watermark implementation scheme, after the terminal is started, the following method can be specifically adopted for drawing the watermark according to the dynamic watermark data file:
when the user terminal is started, whether a dynamic watermark data file exists at present is detected, if yes, a watermark is drawn on a display screen according to the current dynamic watermark data file, otherwise, the watermark is drawn on the display screen according to a static watermark data file in the system.
Furthermore, in order to improve the watermark drawing efficiency, when the user terminal is started, the watermark data file for drawing the watermark can be read from the corresponding system file directory and stored in the cache, so that the watermark can be directly obtained from the cache when the watermark is drawn, thereby shortening the watermark display time delay and enabling the watermark to be displayed on the terminal screen more quickly.
According to the method, the dynamic configuration of the watermark and the full coverage of the watermark can be realized. Fig. 2 to 4 show schematic diagrams of watermark display according to embodiments of the present invention, and it can be seen from the diagrams that, by using the embodiments of the present invention, display content of a watermark can be dynamically set, and the display content is not limited to simple characters and numbers, can also be pictures, and is not limited to being usable only in a certain APP usage scenario.
Corresponding to the above method embodiment, the present application further provides an embodiment of a watermark full coverage apparatus, including: a processor to:
when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction;
and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file.
Preferably, the processor is specifically configured to: calling a preset system layer watermark generation interface, and maintaining the current dynamic watermark data file, wherein the method comprises the following steps:
a. b, judging whether the incoming parameters meet a preset watermark configuration specification or not, and if so, executing the step b; otherwise, terminating the call;
b. determining the type of maintenance according to the incoming parameters;
c. if the maintenance type is the watermark emptying function, deleting the current dynamic watermark data file;
and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
Preferably, the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
Preferably, the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
Preferably, the system-layer watermark generating interface includes: cell phone management tool MDM interface.
Preferably, the processor is further configured to detect whether a dynamic watermark data file exists in a current system file when the user terminal is powered on, if so, draw a watermark on the display screen according to the current dynamic watermark data file, otherwise, draw a watermark on the display screen according to a static watermark data file in the system.
Furthermore, the present application also provides a non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the steps of the watermark full coverage method as described above.
Further, the present application provides an electronic device comprising the non-volatile computer-readable storage medium as described above, and the processor having access to the non-volatile computer-readable storage medium.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (14)
1. A watermark full-covering method, comprising:
when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction;
and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file.
2. The method of claim 1, wherein the invoking a pre-defined system-layer watermark generation interface to maintain the current dynamic watermark data file comprises:
a. b, judging whether the incoming parameters meet a preset watermark configuration specification or not, and if so, executing the step b; otherwise, terminating the call;
b. determining the type of maintenance according to the incoming parameters;
c. if the maintenance type is the watermark emptying function, deleting the current dynamic watermark data file;
and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
3. The method of claim 2, wherein the generating a respective watermark data file according to the incoming parameters comprises:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
4. The method of claim 2, wherein the generating a respective watermark data file according to the incoming parameters comprises:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
5. The method of claim 1, wherein the system layer watermark generation interface is a handset management tool MDM interface, a frameWork interface, or a service interface.
6. The method of claim 1, wherein the method further comprises:
when the user terminal is started, whether a dynamic watermark data file exists at present is detected, if yes, a watermark is drawn on a display screen according to the current dynamic watermark data file, otherwise, the watermark is drawn on the display screen according to a static watermark data file in the system.
7. A watermark flood coverage apparatus, comprising: a processor to:
when a user terminal receives a watermark configuration instruction, calling a preset system layer watermark generation interface to maintain a current dynamic watermark data file; wherein, the incoming parameter of the system layer watermark generating interface is the watermark configuration parameter indicated by the watermark configuration instruction;
and when the dynamic watermark data file is updated, the user terminal draws the watermark on the display screen by using the updated dynamic watermark data file.
8. The apparatus of claim 7, wherein the processor is specifically configured to: calling a preset system layer watermark generation interface, and maintaining the current dynamic watermark data file, wherein the method comprises the following steps:
a. b, judging whether the incoming parameters meet a preset watermark configuration specification or not, and if so, executing the step b; otherwise, terminating the call;
b. determining the type of maintenance according to the incoming parameters;
c. if the maintenance type is the watermark emptying function, deleting the current dynamic watermark data file;
and if the maintenance type is the update watermark data file, deleting the current dynamic watermark data file, generating a corresponding watermark data file according to the transmitted parameters, and storing the watermark data file as the dynamic watermark data file.
9. The apparatus of claim 8, wherein the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, carrying out serialization processing on a picture format file corresponding to the picture, and taking the obtained serialized data file as a watermark data file corresponding to the picture.
10. The apparatus of claim 8, wherein the processor is specifically configured to: generating a corresponding watermark data file according to the incoming parameters, comprising:
analyzing the incoming parameters and acquiring corresponding watermark contents;
generating a watermark data file with a corresponding format according to the watermark content; if the watermark content comprises a picture, after the picture format file corresponding to the picture is serialized, the obtained serialized data file is converted into a picture format file, and the converted file is used as the watermark data file corresponding to the picture.
11. The apparatus of claim 7, wherein the system-layer watermark generation interface comprises: cell phone management tool MDM interface.
12. The method of claim 7, wherein the processor is further configured to detect whether a dynamic watermark data file exists in a current system file when the user terminal is powered on, and if so, render a watermark on a display screen according to the current dynamic watermark data file, otherwise, render a watermark on the display screen according to a static watermark data file in the system.
13. A non-transitory computer readable storage medium storing instructions which, when executed by a processor, cause the processor to perform the steps of the watermark full coverage method of any one of claims 1 to 6.
14. An electronic device comprising the non-volatile computer-readable storage medium of claim 13, and the processor having access to the non-volatile computer-readable storage medium.
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