WO2015196825A1

WO2015196825A1 - Virtual window rotating method, terminal and storage medium

Info

Publication number: WO2015196825A1
Application number: PCT/CN2015/073296
Authority: WO
Inventors: 樊祥阔
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-06-27
Filing date: 2015-02-26
Publication date: 2015-12-30
Also published as: CN104111779A

Abstract

Disclosed in an embodiment of the present invention is a virtual window rotating method applied to a terminal, the method comprising: acquiring the rotation angle value of a virtual window to be rotated in a terminal; and based on the obtained rotation angle value, rotating the virtual window to be rotated via proportional conversion to obtain a rotated virtual window. Also disclosed in the embodiment of the present invention are a virtual window rotating device and storage medium.

Description

Method for rotating virtual window and terminal, storage medium

Technical field

The present invention relates to the field of terminal display, and in particular, to a method for rotating a virtual view, a terminal, and a storage medium.

Background technique

With the development of science and technology, more and more forms of intelligent terminals appear in people's lives, such as smart phones, tablets, multimedia players, and smart projectors. These terminals have the characteristics of low screen resolution and small screen size.

At present, the normal display direction of the screens of these smart terminals is a vertical screen display, but because of the particularity of the product form and its special application scenarios, sometimes the screen must be displayed horizontally. The general practice is to force the operating system to compile into the flat panel display mode, but this will cause the problem that either the screen display interface is too small, or the compatibility is poor, the operating system cannot be started, and replacing the high resolution screen will increase the product cost.

Therefore, in the prior art, there is no more reasonable technical solution for switching display between horizontal screen and vertical screen.

Summary of the invention

In view of this, embodiments of the present invention are directed to a method, a terminal, and a storage medium for rotating a virtual window.

The technical solution of the embodiment of the present invention is implemented as follows:

In a first aspect, an embodiment of the present invention provides a method for rotating a virtual window, which is applied to a terminal, where the method includes: obtaining a rotation angle value of a virtual window to be rotated in the terminal; and passing the obtained rotation angle value, The proportional transformation transforms the virtual window to be rotated The virtual window after rotation.

In a second aspect, the embodiment of the present invention provides a terminal, where the terminal includes: an obtaining unit and a rotating unit; wherein the obtaining unit is configured to obtain a rotation angle value of the virtual window to be rotated in the terminal; And a unit configured to rotate the virtual window to be rotated by a proportional transformation based on the obtained rotation angle value to obtain a rotated virtual window.

In a third aspect, an embodiment of the present invention provides a computer storage medium, wherein a computer program is stored, the computer program configured to execute the method of rotating a virtual window.

In the method for rotating a virtual window and the terminal and the storage medium provided by the embodiment of the present invention, the terminal rotates the virtual window to be rotated according to the rotation angle of the virtual window to be rotated, and obtains the rotated virtual window, and rotates in this way. The virtual window afterwards is consistent with the size of the virtual window to be rotated, so that the proportional switching between the horizontal screen and the vertical screen can be realized, which effectively solves the problem that the display interface existing in the prior art is too small, and is convenient for the user to operate. Preferably, since the terminal only needs to perform a proportional conversion on the rotating virtual window, regardless of any hardware factors, the problem of poor compatibility existing in the prior art is effectively solved, and the operating system cannot be started.

DRAWINGS

1 is a schematic flow chart of a method for rotating a virtual window according to an embodiment of the present invention;

2A to 2D are schematic views of windows of various angles in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The embodiment of the invention provides a method for rotating a virtual window (ViewPort), which is applied to a terminal, and the terminal can be a smart phone, a tablet computer, a multimedia device, or the like. In these terminals can be safe Installed an operating system, such as the Android operating system.

1 is a schematic flowchart of a method for rotating a virtual window according to an embodiment of the present invention. Referring to FIG. 1, the method includes:

S101: Obtain a rotation angle value of the virtual window to be rotated in the terminal;

Here, the value of the rotation angle refers to the angle value at which the virtual window needs to be rotated;

In the specific implementation process, due to the different timing of the application, the virtual window to be rotated can be limited to the following situations:

In the first case, the method is applied to the terminal initialization process. At this time, the virtual window to be rotated may be a reference window preset by the operating system.

Specifically, the operating system of the general terminal presets a virtual window of an angle as a reference window, which is usually a 0° window as shown in FIG. 2A, with the upper left corner of the window as the coordinate origin, and the four vertices of the window are respectively A. , B, C, D. However, in order to meet the increasing user demand and individualization requirements, the terminal manufacturer can also add a parameter, that is, a rotation angle value, to change the reference window of the terminal. For example, if the rotation angle value is set to 270°, then when the terminal obtains the angle value during the initialization process, it is considered that the reference window needs to be rotated by 270°, and the rotated reference window is the initial window.

Of course, the reference window may be a 90° window as shown in FIG. 2B (the terminal is displayed horizontally), and the window is a window after the window is rotated 90° clockwise; or may be 180 as shown in FIG. 2C. ° window (the terminal is displayed in vertical position), the window is the window after the window is 0° and the window is rotated 180° clockwise; it can also be 270° as shown in Figure 2D (the terminal is displayed horizontally) The window is a window in which the window is 0° and the window is rotated clockwise by 270°, which is not specifically limited in the present invention.

In the second case, the method is applied to the normal use of the terminal. At this time, the virtual window to be rotated may be the initial window after the terminal is initialized.

Specifically, after the terminal completes the initialization process, the virtual window is also set according to the operating system. The setting of the terminal or terminal manufacturer is initialized to the initial window, then the virtual window is the initial window. After the terminal obtains the direction angle of the current terminal reported by the detecting device, the angle value is determined as the rotation angle value of the virtual window to be rotated to change the initial window of the terminal; where the detecting device may be a gravity sensor, a gyroscope, an acceleration sensor The device, for example, the direction of the direction of the gravity sensor reporting terminal is 180°, and the terminal determines the direction angle as the rotation angle value. Then, the initial window needs to be rotated by 180°, and the initial window after the rotation is the previous rotation. Windows.

In an actual application, the terminal may also read the preset window angle of the application when the user starts an application, and confirm the angle value as the rotation angle value; the terminal may also select the user after the user selects the display mode. The window angle value corresponding to the display mode is confirmed as the rotation angle value. Of course, there may be other ways of obtaining the rotation angle value, which is not specifically limited in the present invention.

In the third case, the method is applied to the normal use of the terminal. At this time, the virtual window to be rotated may be the previous window after the last rotation of the terminal.

Specifically, in the process of being used by the user, the terminal can rotate the terminal multiple times. Then, for the current rotation, the virtual window to be rotated is the previous window. The terminal can obtain the rotation angle value in several ways. For example, if the direction of the direction of the gravity sensor reporting terminal is 180°, and the terminal determines the direction angle as the rotation angle value, then the previous window needs to be rotated by 180° again.

In another embodiment, for the first case, before S101, the method of the embodiment of the present invention further includes: obtaining a power-on initialization signal. Specifically, when the user turns on the terminal, for example, when the control terminal is powered on, the terminal obtains the boot initialization signal, enters the boot initialization process, and executes S101.

For the second case and the third case, before the S101, the method of the embodiment of the present invention further includes: obtaining a rotation trigger signal. Specifically, when the terminal obtains the direction angle reported by the detecting device, obtains the application opening command, or obtains the display mode adjusting command, the terminal generates a rotation trigger signal, and executes S101.

S102: Rotate the virtual window to be rotated by an equal conversion according to the obtained rotation angle value, and obtain a rotated virtual window.

In a specific implementation process, S102 may be: rotating the virtual window to be rotated by using a first equal-scale transformation template to obtain a rotated virtual window.

Specifically, before the terminal leaves the factory, the terminal manufacturer may pre-store a proportional conversion template corresponding to at least one preset angle value in the terminal, that is, store at least one proportional conversion template; then, in S101. After the method, the method of the embodiment of the present invention may further include: determining, from all the equal-scale transformation templates, a first proportional transformation template corresponding to the rotation angle value;

Then, S102 is executed again, that is, the virtual window to be rotated is rotated by using the first equal-scale template to obtain a rotated virtual window.

For example, the above-mentioned proportional transformation template may be an equal-scale transformation matrix A, and the preset angle values may be 0°, 90°, 180°, and 270°, then the corresponding matrix A may be as shown in formulas (1) to (4). Show.

Where α is a preset angle value, d _Width is the number of pixels on the horizontal line of the terminal screen, and d _Height is the number of pixels on the vertical line of the terminal screen.

Then, after the terminal obtains the rotation angle value of the virtual window to be rotated through S101, the fourth template may be determined as the first equal-scale transformation template in the above four equal-scale transformation templates.

Next, according to the following formula (5), the rotating virtual window is changed in proportion, that is, the rotating virtual window is rotated to obtain a rotated virtual window.

[x'y' 1]=[x y 1]×A| _α=270° (5)

Where x' is the horizontal coordinate of the pixel in the virtual window after rotation, y' is the vertical coordinate of the pixel in the virtual window after rotation; x is the horizontal coordinate of the pixel in the virtual window to be rotated, and y is the vertical of the pixel in the virtual window to be rotated coordinate.

Of course, before the terminal leaves the factory, the terminal manufacturer can also preset a common proportional conversion template in the terminal. Then, after S101, and between S102, the method of the embodiment of the present invention may further include: according to the rotation angle value And generating a first equal-scale transformation template corresponding to the rotation angle value, and then executing S102, that is, rotating the virtual window to be rotated by using the first equal-scale template to obtain the rotated virtual window.

For example, the above general proportional transformation template may be an equal-scale transformation matrix B as shown in equation (6).

Where β is the rotation angle value, t _x is the offset amount in the horizontal direction, and t _y is the offset amount in the vertical direction. When the values of the rotation angle are different, the values of t _x and t _y are also different. When β=0°, t _x =0 _, t _y =0; when β=90°, t _x =d _Height , t _y =0; when β=180°, t _x =d _width ,t _y =d _Height ; when β=270°, t _x =0, t _y =d _Width .

Then, by introducing β = 270°, t _x =0, and t _y = d _Width into equation (6), equation (4) can be generated.

Finally, according to the formula (5), the rotating virtual window is rotated to obtain a rotated virtual window.

During the above rotation process, the virtual window to be rotated is defaulted to a 0° window. In practical applications, the virtual window to be rotated can also be a window of other angles.

For example, the virtual window to be rotated is the initial window. During the initialization process, the rotation is 270° window. At this time, the rotation angle of the virtual window to be rotated is 90°, that is, the 270° window needs to be rotated by 90°, then , scaling and other templates may be proportional transformation matrix _H, as shown in the following equation (7).

H=A| _α=270° ·A| _α=90° (7)

Next, replace the proportional transformation matrix A in the formula (5) with H to obtain a rotated virtual window. At this time, the rotated virtual window is a 0° window.

In another embodiment, the operating system of the terminal may have a rotating window function. Then, when the user turns on the function, when the virtual window is rotated based on the above process, the rotated virtual window appears and the terminal If the current posture does not match, then the equal-scale transformation process needs to be corrected. At this time, before S102, the method of the embodiment of the present invention further includes: obtaining a screen orientation value according to the current posture of the terminal; It can be said that the terminal can detect the posture of the current terminal through the above detecting device, and obtain the screen direction value.

In this case, S102 may be: rotating the virtual window to be rotated by a proportional transformation based on the screen direction value and the rotation angle value to obtain a rotated virtual window.

For example, suppose the virtual window of the terminal to be rotated is a 0° window, and the preset rotation angle value is It is 270°. First, the terminal turns on the gravity sensor, detects the current posture of the terminal, and obtains the original data of the space coordinate reported by the gravity sensor, and the operating system converts the data into a screen orientation value, for example, 90°, and then, the screen is passed through the following formula (8). The direction value is corrected. Here, each angle value can be counted, for example, 0° is recorded as 0, 90° is recorded as 1, and 180° is recorded as 2, and 270° is recorded as 3.

h _correction = (h+4-3)%4 (8)

Where h is _corrected to the corrected count and h is the count of the screen orientation value; then, corresponding to the screen orientation value h=90°, h _correction =2 can be obtained.

Next, the terminal respectively determines the proportional conversion templates corresponding to the h _correction and rotation angle values, that is, the two matrices as shown in the formula (1) and the formula (4).

Finally, the terminal rotates the virtual window to be rotated according to the following formula (9) to obtain a rotated virtual window.

[x' y' 1]=[x y 1]×H (9)

Preferably, if the touch screen is set on the terminal, since the coordinate conversion of the physical coordinates of the touch screen to the screen pixel is the same as the virtual window rotation, the five points can be obtained by touching the four corners and the center on the touch screen. Physical coordinates; then, according to Cramer's law, the matrix transformation equation is solved, and a set of calibration coefficients is obtained. Then, the physical coordinates reported by the touch display screen are calibrated according to the calibration coefficient, and the exact corresponding pixel coordinates of the screen are obtained, of course, Calibration can also be performed using an open source calibration tool that is currently well established, and the invention is not specifically limited. In practical applications, because of the working characteristics of the touch screen, for the capacitive screen, it is only necessary to perform one calibration at the factory, and for the resistive screen, multiple calibrations are required.

After the virtual window is rotated, the operating system writes the rotated virtual window data to the framebuffer, and the terminal driver controls its display on the hardware screen.

It can be seen that the terminal rotates the virtual window to be rotated according to the rotation angle of the virtual window to be rotated, and obtains the rotated virtual window, and thus rotates. The subsequent virtual window is consistent with the size of the virtual window to be rotated, thereby achieving equal-scale switching between the horizontal screen and the vertical screen, which is convenient for the user to operate; preferably, since the terminal only needs to transform the virtual window to be rotated, instead of Consider any hardware factors that prevent the operating system from starting.

Based on the same inventive concept, the embodiment of the present invention further provides a terminal. FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 3, the terminal includes: an obtaining unit 31 and a rotating unit 32;

The obtaining unit 31 is configured to obtain a rotation angle value of the virtual window to be rotated in the terminal;

The rotation unit 32 is configured to rotate the virtual window to be rotated by the proportional transformation based on the obtained rotation angle value to obtain a rotated virtual window.

Preferably, the terminal further comprises: a determining unit 33 configured to determine, after the obtaining unit 31 obtains the rotation angle value, and before the rotation unit 32 rotates the virtual window to be rotated, in the preset at least one proportional transformation template And a first equal-scale transformation template corresponding to the rotation angle value, wherein the proportional transformation template has a one-to-one correspondence with the preset angle value.

Preferably, the determining unit 33 is further configured to generate a first proportional conversion template corresponding to the rotation angle value according to the rotation angle value and the preset general proportional transformation template before the rotation unit 32 rotates the virtual window to be rotated.

Preferably, the rotating unit 32 is configured to rotate the virtual window to be rotated by using the first equal-scale transformation template to obtain a rotated virtual window.

Preferably, the terminal further includes: a correction unit 34 configured to obtain a screen orientation value according to a current posture of the terminal before the rotation unit 32 rotates the virtual window to be rotated; the rotation unit 32 is specifically configured to pass the rotation angle value The proportional transformation transforms the rotating virtual window to obtain a virtual window to be corrected; the virtual window to be corrected is corrected by the screen direction value to obtain a rotated virtual window.

The obtaining unit 31, the rotating unit 32, the determining unit 33, and the correcting unit 34 can be set. It can be placed in a processor such as a CPU or an ARM, and can also be set in a single-chip microcomputer or a system-on-chip (SoC), which is not specifically limited in the present invention.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, where a calculation is stored A computer program configured to perform the method of rotating a virtual window of an embodiment of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

According to various embodiments of the present invention, the terminal rotates the rotating virtual window by proportional transformation to obtain a rotated virtual window, and the virtual window after the rotation is consistent with the size of the virtual window to be rotated, and the horizontal screen and the horizontal screen can be realized. The proportional switching between the vertical screens effectively solves the problem of too small display interface existing in the prior art, and is convenient for the user to operate; preferably, since the terminal only needs to perform proportional conversion on the rotating virtual window, regardless of any hardware. Therefore, the problem of poor compatibility existing in the prior art is effectively solved, and the operating system cannot be started.

Claims

A method for rotating a virtual window is applied to a terminal, and the method includes:

Obtaining a rotation angle value of the virtual window to be rotated in the terminal;

Based on the obtained rotation angle value, the virtual window to be rotated is rotated by a proportional transformation to obtain a rotated virtual window.
The method according to claim 1, wherein after said obtaining a rotation angle value of a virtual window to be rotated in said terminal, and said based on said obtained rotation angle value, said to Before rotating the virtual window for rotation, the method further includes:

Determining, in the preset at least one equal-scale transformation template, a first proportional transformation template corresponding to the rotation angle value; wherein the proportional transformation template has a one-to-one correspondence with the preset angle value.
The method according to claim 1, wherein before the rotating the virtual window to be rotated by the proportional transformation based on the obtained rotation angle value, the method further comprises:

And generating a first proportional conversion template corresponding to the rotation angle value according to the rotation angle value and a preset general proportional transformation template.
The method according to claim 2 or 3, wherein the rotating the virtual window to be rotated is rotated by a proportional transformation based on the obtained rotation angle value to obtain a rotated virtual window, specifically:

Rotating the virtual window to be rotated by using the first proportional transformation template to obtain the rotated virtual window.
The method of claim 1 wherein the method further comprises:

Obtaining a screen orientation value according to a current posture of the terminal;

And rotating, according to the obtained rotation angle value, the virtual window to be rotated by a proportional transformation to obtain a rotated virtual window, specifically:

Determining the to-be-rotated by proportional transformation based on the screen orientation value and the rotation angle value Rotate the virtual window to rotate to obtain the rotated virtual window.
A terminal, the terminal comprising: an obtaining unit and a rotating unit; wherein

The obtaining unit is configured to obtain a rotation angle value of the virtual window to be rotated in the terminal;

The rotating unit is configured to rotate the virtual window to be rotated by a proportional transformation based on the obtained rotation angle value to obtain a rotated virtual window.
The terminal according to claim 6, wherein the terminal further comprises: a determining unit configured to rotate the virtual window to be rotated after the obtaining unit obtains the rotation angle value The first proportional conversion template corresponding to the rotation angle value is determined in the preset at least one proportional transformation template; wherein the proportional transformation template has a one-to-one correspondence with the preset angle value.
The terminal according to claim 6, wherein the terminal further comprises: a determining unit configured to: before the rotating unit rotates the virtual window to be rotated, according to the rotation angle value and a preset universal The scale conversion template generates a first proportional transformation template corresponding to the rotation angle value.
The terminal according to claim 7 or 8, wherein the rotating unit is configured to rotate the virtual window to be rotated by using the first proportional conversion template to obtain the rotated virtual window.
The terminal according to claim 6, wherein the terminal further comprises: a correction unit configured to obtain a screen orientation value according to a current posture of the terminal before the rotation unit rotates the virtual window to be rotated ;

The rotating unit is further configured to: rotate the virtual window to be rotated by a proportional transformation based on the screen direction value and the rotation angle value to obtain the rotated virtual window.
A computer storage medium storing a computer program configured to perform the method of rotating a virtual window according to any one of claims 1 to 5.