WO2016095429A1

WO2016095429A1 - Screenshot method and device for mobile terminal

Info

Publication number: WO2016095429A1
Application number: PCT/CN2015/079519
Authority: WO
Inventors: 姚均营
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-17
Filing date: 2015-05-21
Publication date: 2016-06-23
Also published as: WO2016095342A1; CN105786359A

Abstract

The present invention relates to the field of mobile terminals. Disclosed are a screenshot method and device for a mobile terminal. The method comprises: a mobile terminal reads, according to a screenshot instruction of a user, content currently displayed on a screen and content not currently displayed on the screen; combine the read content currently displayed on the screen and the read content not currently displayed on the screen, to form an image; and screenshot the formed image to obtain a screenshot. According to the present invention, by means of one screenshot operation, content exceeding a current display range of a screen can be obtained, and user experience of a terminal is improved.

Description

Mobile terminal screen capture method and device

Technical field

The present invention relates to the field of mobile terminals, and in particular, to a method and apparatus for screening a mobile terminal.

Background technique

With the continuous development of terminal technologies and the popularity of smart mobile terminals (for example, smart phones), there are more and more application software on smart mobile terminals, and users often need screenshot functions during the use of application software.

At present, the smart mobile terminal on the market mainly implements a single screen screenshot function, that is, a certain hot key combination or a multi-touch gesture track to realize the screenshot function of the current screen display content. However, in actual use, the user often needs the content of the screenshot. The current screen is not completely displayed. At this time, the user generally needs to perform multiple screen capture actions to complete the screenshot of all the content. In this case, the screenshot function of the current terminal cannot conveniently meet the needs of the user, thereby reducing the user experience of the terminal.

Summary of the invention

The embodiment of the invention provides a method and a device for screening a mobile terminal, so as to at least better solve the problem that the screenshot cannot be completed by one screenshot operation due to the fact that the current screen does not completely display the content that needs to be captured.

According to an embodiment of the present invention, a mobile terminal screenshot method is provided, including:

The mobile terminal reads the current display content of the screen and the currently undisplayed content of the screen according to the user's screenshot instruction;

Synthesizing the current display content of the read screen and the currently undisplayed content of the screen to form a picture;

Take a screenshot of the resulting image and get a screenshot image.

Before the mobile terminal reads the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction, the mobile terminal further includes:

Pre-set physical buttons or sliding screen patterns used to activate the screenshot function;

Whether the set physical button or the sliding screen pattern is triggered to be detected;

A user screenshot instruction is generated when it is detected that the set physical button or sliding screen pattern is triggered.

The currently undisplayed content is the next screen display content used to display after the currently displayed content.

The mobile terminal includes a front buffer and a back buffer. The mobile terminal reads the current display content of the screen from the front/back buffer, and reads the content currently not displayed on the screen from the back/front buffer.

The step of taking a screenshot of the formed picture and obtaining the screenshot picture includes:

Displaying the picture onto the screen by zooming the formed picture to form a preview interface;

Crop the screen capture area selected by the user on the preview interface to get the screenshot image and save it.

According to another embodiment of the present invention, a mobile terminal screenshot device is provided, including:

The reading module is configured to read the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction;

a synthesizing module, configured to synthesize the current display content of the read screen and the currently undisplayed content of the screen to form a picture;

The screenshot module is set to take a screenshot of the formed image and get a screenshot image.

The device also includes:

The triggering module is configured to detect whether a preset physical button or a sliding screen pattern used to activate the screenshot function is triggered, and generate a user screenshot instruction when detecting that the set physical button or the sliding screen pattern is triggered.

The reading module reads the current display content of the screen from the front/back buffer of the mobile terminal, and reads the content currently not displayed on the screen from the back/front buffer of the mobile terminal.

The screenshot module displays the image on the screen by zooming the formed image to form a preview interface, and crops the screen capture area selected by the user on the preview interface to obtain a screenshot image and save the image.

Compared with the related art, the beneficial effects of the embodiments of the present invention are at least:

The embodiment of the present invention obtains the content beyond the current display range of the screen by one screenshot operation, thereby completing the screenshot and improving the user experience of the terminal.

DRAWINGS

1 is a schematic block diagram of a screen capture method of a mobile terminal according to an embodiment of the present invention;

2 is a block diagram of a screen capture device of a mobile terminal according to an embodiment of the present invention;

3 is a schematic diagram of a double buffering technique according to an embodiment of the present invention;

4 is a flowchart of a screenshot method of a mobile terminal according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a screen capture device of a mobile terminal according to an embodiment of the present invention.

detailed description

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of a screen capture method of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1 , the steps include:

Step S101: The mobile terminal reads the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction.

Before step S101, a physical button or a sliding screen pattern for starting the screenshot function needs to be preset, and the mobile terminal detects whether the set physical button or the sliding screen pattern is triggered, and when the set physical button is detected or When the sliding screen pattern is triggered, a user screenshot instruction is generated.

The mobile terminal includes a front buffer and a back buffer. In step S101, the mobile terminal reads the current display content of the screen from the front/back buffer, and reads the content currently not displayed on the screen from the back/front buffer.

Step S102: synthesize the currently displayed content of the read screen and the currently undisplayed content of the screen to form a picture.

Step S103: Perform a screenshot on the formed picture to obtain a screenshot picture.

In step S103, by performing zoom processing on the formed picture, the picture is displayed on the screen to form a preview interface; the screen capture area selected by the user on the preview interface is cropped, and the screenshot picture is obtained and saved.

Further, the currently undisplayed content is the next screen display content used to display after the current display content. That is to say, the method provided in this embodiment can at least implement a dual screen screenshot, that is, perform a screenshot action to obtain a picture of two screen contents exceeding the current screen display range.

FIG. 2 is a block diagram of a screen capture device of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 2, the method includes: a reading module 10, a synthesizing module 20, and a screenshot module 30.

The reading module 10 is configured to read the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction.

The synthesizing module 20 is configured to synthesize the currently displayed content of the read screen and the currently undisplayed content of the screen to form a picture.

The screenshot module 30 is configured to take a screenshot of the formed image to obtain a screenshot image.

Further, the mobile terminal screenshot device shown in FIG. 2 may further include a trigger module 40 that generates a user screenshot instruction according to a user operation.

Specifically, the trigger module detects whether a preset physical button or a sliding screen pattern used to activate the screenshot function is triggered, and generates a user screenshot when detecting that the set physical button or the sliding screen pattern is triggered by the user. instruction. At this time, the reading module 10 reads the front-back buffer and the back buffer cache of the mobile terminal at one time, that is, reads the current display content of the screen from the front/back buffer of the mobile terminal, and buffers from the back/front of the mobile terminal. The area reads the content that is not currently displayed on the screen. The composition module 20 parses the read content and generates a picture containing the complete content. Finally, the screenshot module 30 displays the picture including the current preview content and the currently unpreviewed content on the screen by performing a scaling process on the generated image to form a preview interface, and performs a screen capture area selected by the user on the preview interface. Crop, get the screenshot image and save it.

In the embodiment provided by FIG. 1 and FIG. 2, the synthesized picture may be a bitmap picture composed of pixel points, for example, a 16-color bitmap picture, a 256-color bitmap picture, a 24-bit bitmap picture, and the like. .

The currently undisplayed content is the next screen display content used after the current display content, that is, the embodiment provided in FIG. 2 can at least implement a dual screen screenshot.

Take a double-screen composite bitmap image as an example. In the interface to be screenshotd, obtain the screenshot instruction, read the pixel data of the two screens in the frame buffer (Framebuffer), generate a bitmap, and realize the dual-screen screenshot function. The Framebuffer refers to a continuous physical memory reserved for the Graphic Processing Unit (GPU) in the embedded system. In the smart terminal, the image data (ie, pixel data) displayed on the screen is saved in the Framebuffer. In the LCD, the LCD reads the image data from the Framebuffer through a dedicated bus. Show on the screen. Further, according to the number of Framebuffers, it can be divided into single buffering technology and double buffering technology. Currently, the intelligent terminal system mainly adopts double buffering technology, that is, there are two Framebuffers, including a front buffer (Front Buffer) and a back buffer (Back). Buffer), when the liquid crystal display (LCD) displays the content of the Front Buffer, the Central Processing Unit (CPU) writes the pixel data of another picture to be displayed to the Back Buffer. Therefore, for a double buffer device, the pixel data of two pictures is saved in the Framebuffer. In this way, when the screenshot instruction is obtained, the pixel data of the two images in the Framebuffer is read at one time, and a bitmap is generated, thereby implementing the dual screen screenshot function.

3 is a schematic diagram of a double buffering technology according to an embodiment of the present invention. As shown in FIG. 3, in 102, a screen displays a content image 1 in a Front Buffer; and at this time, the CPU will back to the Back Buffer in the background. The data of image 2 is written.

When the interface needs to be refreshed, the terminal enters the 104 state, and the Screen reads and displays the content image 2 in the Back Buffer through the bus. At the same time, the CPU writes the image 3 data to the Front Buffer in the background.

The above is the basic principle of the double buffering technology. The double buffering technology improves the efficiency of the screen image refreshing, and simultaneously saves the image data displayed by the current interface and the data of another image to be displayed in the background buffer;

FIG. 4 is a flowchart of a method for taking a screenshot of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 4, the steps include:

Step S202: The terminal receives the screenshot instruction and starts the screen capture function.

The screenshot instruction may be a physical hotkey combination operation preset by the system or the user, for example, pressing a combination key simultaneously: volume+ and volume-, or may be a preset multi-touch gesture track, such as The user performs a sliding screen operation of the preset pattern on the screen.

Step S204: Read and parse the frame buffer image data to generate a bitmap.

Taking the mobile terminal of the Linux kernel as an example, the frame buffer is mapped to the device node file /dev/fb0, and the content of the file can be opened and read by a reading method similar to a normal file. Specifically, the file includes Front Buffer and Back Buffer content. After that, the read data is parsed, and a bitmap (Bitmap) is generated. Specifically, the content of the bitmap generated here contains data of two images, and the size of the bitmap is equivalent to two of the screen size of the terminal. Times.

Step S206: Display a picture preview interface.

The bitmap obtained in step S204 is reduced, and all the contents of the bitmap are completely displayed on the screen of the terminal to form a preview interface; specifically, the ratio of the bitmap reduction may be 40% to 60%, for example, 50%. So that the screen can display the bitmap content completely.

Step S208: Crop the picture.

In the preview interface, there is an area selection box that can change the size and position. The shape of the selection box can be a rectangle or a circle; the user can drag the selection frame to change the position of the preview interface; the user can drag Move the border of the selection box to change the size of the selection box.

The user can use this selection box to crop the previewed image: the content of the image in the selection box will be preserved, and the content of the image outside the selection box will be discarded; when the size of the selection box fills the entire screen, the preview interface All image content will be retained.

S210: Save the picture.

After the user has finished cropping, the image can be saved and the final screenshot image is generated in the file system of the terminal. Specifically, the user can perform a save action by clicking a save button in the preview interface, or performing a save action through a preset physical button.

5 is a schematic structural diagram of a screen capture device of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 5, the mobile terminal includes: a data acquisition module 32, an image display module 34, and a control module 36, wherein the data acquisition module 32 implements the map. 2 The functions of the reading module 10 and the composition module 20 of the embodiment, the image display module 34 and the control module 36 implement the functions of the screenshot module 30 of the embodiment of FIG.

The data obtaining module 32 is configured to acquire a screenshot instruction, read pixel data of the frame buffer, and generate a bitmap;

The image display module 34 is configured to display the generated bitmap onto the terminal screen, for example, in the form of a preview interface.

The control module 36 is configured to control the final picture interception area and save the picture, that is, control the picture cropping area, and save the content in the picture cropping area as the final picture.

In summary, the present invention has the following technical effects:

The embodiment of the invention utilizes the double buffering technology to realize the function of acquiring two screen image data in a single screen shot action, enhancing the screen capture function of the terminal, and improving the user experience.

Although the invention has been described in detail above, the invention is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the principles of the invention. Therefore, modifications made in accordance with the principles of the invention are to be understood as falling within the scope of the invention.

Industrial applicability

As described above, the method and apparatus for screen capture of a mobile terminal provided by the embodiment of the present invention have the following beneficial effects: the problem that the screenshot cannot be completed by one screenshot operation due to the fact that the current screen does not completely display the content of the screenshot is required. Through a screenshot operation, the content beyond the current display range of the screen is obtained, thereby completing the screenshot and improving the user experience of the terminal.

Claims

A mobile terminal screenshot method includes:

The mobile terminal reads the current display content of the screen and the currently undisplayed content of the screen according to the user's screenshot instruction;

Synthesizing the current display content of the read screen and the currently undisplayed content of the screen to form a picture;

Take a screenshot of the resulting image and get a screenshot image.
The method according to claim 1, wherein before the mobile terminal reads the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction, the method further includes:

Pre-set physical buttons or sliding screen patterns used to activate the screenshot function;

Whether the set physical button or the sliding screen pattern is triggered to be detected;

A user screenshot instruction is generated when it is detected that the set physical button or sliding screen pattern is triggered.
The method of claim 1, wherein the currently undisplayed content is a next screen display content for displaying after the currently displayed content.
The method according to any one of claims 1 to 3, wherein the mobile terminal comprises a front buffer and a back buffer, and the mobile terminal reads the current display content of the screen from the front/back buffer, and from the back/front buffer Reads the content that is not currently displayed on the screen.
The method according to any one of claims 1-3, wherein the step of taking a screenshot of the formed picture to obtain a screenshot picture comprises:

Displaying the picture onto the screen by zooming the formed picture to form a preview interface;

Crop the screen capture area selected by the user on the preview interface to get the screenshot image and save it.
A mobile terminal screenshot device includes:

The reading module is configured to read the current display content of the screen and the currently undisplayed content of the screen according to the user screenshot instruction;

a synthesizing module, configured to synthesize the current display content of the read screen and the currently undisplayed content of the screen to form a picture;

The screenshot module is set to take a screenshot of the formed image and get a screenshot image.
The apparatus of claim 6 further comprising:

The triggering module is configured to detect whether a preset physical button or a sliding screen pattern used to activate the screenshot function is triggered, and generate a user screenshot instruction when detecting that the set physical button or the sliding screen pattern is triggered.
The apparatus of claim 6, wherein the currently undisplayed content is a next screen display content for displaying after the currently displayed content.
The apparatus according to any one of claims 6-8, wherein the reading module reads the current display content of the screen from the front/back buffer of the mobile terminal, and from the back/front buffer pair of the mobile terminal The screen does not currently display content for reading.
The device according to any one of claims 6-8, wherein the screenshot module displays the image on the screen by zooming the formed image to form a preview interface, and the user is on the preview interface. Crop the selected screenshot area to get the screenshot image and save it.
A mobile terminal comprising the mobile terminal screenshot device of any one of claims 6-10.
A computer storage medium arranged to store a computer program for implementing the mobile terminal screenshot method of any of claims 1-5.