CN103092524A - Method for realizing screenshot through touch screen and mobile terminal - Google Patents
Method for realizing screenshot through touch screen and mobile terminal Download PDFInfo
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- CN103092524A CN103092524A CN2013100378576A CN201310037857A CN103092524A CN 103092524 A CN103092524 A CN 103092524A CN 2013100378576 A CN2013100378576 A CN 2013100378576A CN 201310037857 A CN201310037857 A CN 201310037857A CN 103092524 A CN103092524 A CN 103092524A
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Abstract
The invention provides a method for realizing screenshot through a touch screen, and a mobile terminal. The method includes a first step of starting a partial screenshot function, cutting out a full screen image as an initialization selected area to display, a second step of catching and recording an input sliding track of a user in the initialization selected area, a third step of recognizing a closed curve contained in the sliding track and confirming an area surrounded by the closed curve to be the selected area, or recognizing the sliding track as an open curve (the sliding track divides the initialization selected area into at least two areas) and confirming one area to be the selected area according to a selection instruction of the user, and a fourth step of storing the range, corresponding to the selected area, of the full screen image to be a screenshot. Through adoption of the method, the user can intercept images with any shapes through an instant messaging client-side and sends the images to other instant messaging client-sides. Practicality of instant messaging (IM) software and flexibility in the screenshot process are greatly improved, and user experience is also improved.
Description
Technical field
The present invention relates to technical field of mobile terminals, relate in particular to a kind of method and mobile terminal of realizing sectional drawing by touch-screen.
Background technology
At present, the terminal device that is provided with touch-screen is used general, such as, have mobile phone, panel computer, notebook computer, the desktop computer of touch-screen, perhaps personal digital assistant, etc.Along with the development of present science and technology and user's demand, existing most of IM(instant messaging, the abbreviation of Instant Messenger) client software (as QQ, Fetion) all has the function of sectional drawing.But current touch-screen equipment such as smart mobile phone, the general function that intercepts current whole screen that only has been to provide, and the image transmission that intercepts whole screen-picture can make transmitted traffic excessive, and the user is needed sometimes is certain a part of picture in screen, therefore can cause certain wasting of resources, and often can not reach the desired effect of user.
On the other hand, existing screen regional sectional drawing generally only provides the sectional drawing frame of the regular shapes such as rectangle, by definition sectional drawing frame angle point is determined the shape of sectional drawing, the sectional drawing mode is comparatively single, underaction.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of method and mobile terminal of realizing sectional drawing by touch-screen, send to other instant communication clients so that the user can intercept arbitrarily shaped image by instant communication client, improve user's experience.
The present invention is achieved by the following technical solutions:
A kind of method that realizes sectional drawing by touch-screen is applied to mobile terminal, and its step comprises:
A, start local screen's sectional drawing function, the intercepting full-screen image is the initialization constituency and shows;
B, catch and sliding trace that recording user is inputted in the initialization constituency;
C, the described sliding trace of identification comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps, identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
D, scope corresponding with the constituency in full-screen image is saved as the cut-away view picture.
Further, in step c, the described sliding trace of identification comprises a closed curve, refers to detect comprise two identical point coordinate in sliding trace.
In described step c, sliding trace refers to described sliding trace by intersecting with the border in initialization constituency with the initialization electoral district division at least two zones, and this border is common consists of at least two closed curves.
After described step c determined the constituency, steps d also comprised before preserving the cut-away view picture: step c0, described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
In step c0, described constituency and the regular shape that is pre-stored in mobile terminal are mated, the regular shape that is complementary that is shaped as in match constituency comprises:
C1, read summit number and the center point coordinate in constituency to be matched;
C2, choose with the same number of regular shape that prestores in the summit in constituency to be matched as template;
C3, the described template of translation make the central point of this template overlap with the central point in constituency to be matched, to described template be rotated, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of distance between respective vertices is minimum, makes perhaps that this template is identical with constituency to be matched direction, the some random pickup point on template is minimum with the variance of the closest approach distance between constituency to be matched;
C4, when this minimum variance less than a pre-set threshold value, judge constituency to be matched and template matches the success;
C5, the constituency shape with described shape of template after step c3 rotation, convergent-divergent after as match.
The regular shape that is pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon.
The present invention also provides a kind of mobile terminal of realizing sectional drawing by touch-screen, comprising:
Start unit is used for starting local screen's sectional drawing function, and the intercepting full-screen image is the initialization constituency and shows;
The track capturing unit be used for to catch and sliding trace that recording user is inputted in the initialization constituency;
The constituency determining unit, be used for identifying described sliding trace and comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
The picture editting unit is used for the scope that full-screen image is corresponding with the constituency and saves as the cut-away view picture.
Further, described mobile terminal also comprises a constituency post-processing unit, be used for described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
Compared with prior art, screenshot method provided by the invention and terminal have realized the free sectional drawing of arbitrarily shaped image in the screenshot capture process, but and provide the arbitrary portion of Extraordinary editting function user screen printing image for the image in constituency and constituency, operating gesture is simple, and the shape match in constituency or level and smooth aftertreatment are provided, the practicality of IM software and the dirigibility in the sectional drawing process have greatly been improved, the user can intercept arbitrarily shaped image by instant communication client and send to other instant communication clients, improves user's experience.
Description of drawings
Accompanying drawing 1 is realized the realization flow schematic diagram of the method for sectional drawing by touch-screen for the smart mobile phone of the embodiment of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, the invention will be further described below in conjunction with accompanying drawing.
A kind of method that realizes sectional drawing by touch-screen is applied to mobile terminal.Mobile terminal of the present invention comprises the smart electronics terminals such as smart mobile phone with touch-screen, panel computer.The step of described method comprises:
A, start local screen's sectional drawing function, the intercepting full-screen image is the initialization constituency and shows;
B, catch and sliding trace that recording user is inputted in the initialization constituency;
C, the described sliding trace of identification comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
D, scope corresponding with the constituency in full-screen image is saved as the cut-away view picture.
Further, the described sliding trace of described step c identification comprises a closed curve, refers to detect comprise two identical point coordinate in sliding trace.In actual use, the user can input a closed curve by slide on touch-screen.After the system identification closed curve, will intercept this closed curve with interior image.Open curve is opposite with closed curve, does not comprise any two identical point coordinate.
Perhaps, in other embodiments of the invention, the described sliding trace of described step c identification comprises a closed curve, and the starting point coordinate that refers to detect described sliding trace is identical with the terminating point coordinate.
The sliding trace that is an open curve shape in described step c refers to that at least two zones sliding trace is by intersecting (border that is sliding trace and initialization constituency has two or more intersection points) with the border in initialization constituency with the initialization electoral district division, consist of at least two closed curves with this border is common, thereby the initialization electoral district division is at least two zones.When intersect on the border in the sliding trace of user input and initialization constituency, such as standardized road straight line in the middle of touch-screen, this straight line can and the border in initialization constituency, the edge that is full-screen image forms two closed curves, and at this moment just needing which closed curve of judgement is the required intercepting of user with interior image.Better disposal route is to make a check mark respectively on variant zone, such as being labeled as respectively A and B, the zone of the required selection intercepting of prompting user.The user can touch the zone of required intercepting or put and touch the sign option by point on touch-screen, and system determines that according to user's selection instruction the zone of a certain sign is the constituency.
Further, after described step c determined the constituency, steps d also comprised before preserving the cut-away view picture: step c0, described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
Further, step c0 mates described constituency and the regular shape that is pre-stored in mobile terminal, and the regular shape that is complementary that is shaped as in match constituency comprises:
C1, read summit number and the center point coordinate in constituency to be matched;
C2, choose with the same number of regular shape that prestores in the summit in constituency to be matched as template;
C3, the described template of translation make the central point of this template overlap with the central point in constituency to be matched, to described template be rotated, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of distance between respective vertices is minimum, makes perhaps that this template is identical with constituency to be matched direction, the some random pickup point on template is minimum with the variance of the closest approach distance between constituency to be matched;
C4, when this minimum variance less than a pre-set threshold value, judge constituency to be matched and template matches the success;
C5, the constituency shape with described shape of template after step c3 rotation, convergent-divergent after as match.
Work as this minimum variance in described step c4 more than or equal to a pre-set threshold value, judge the failure of constituency to be matched and template matches, outline to described constituency carries out smoothing processing, can adopt existing curve smoothing algorithm, comprise cubic spline function, lagrange polynomial, BEZIER smoothing algorithm, PAEK exponential polynomials smoothing algorithm etc., the image that has been widely used in computing machine is processed, and does not further give unnecessary details at this.
For the shape with summit, as triangle, rectangle, step c3 can be rotated described template, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of the distance between respective vertices is for minimum; And for without the summit shape, as circle, can be rotated described template, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of the some random pickup point on template and the closest approach distance between constituency to be matched is for minimum.Some random pickup point number herein can arrange according to the actual requirements, as to be fixedly installed be ten.
In another embodiment of the present invention, step c3 can be rotated described template, convergent-divergent makes that this template is identical with constituency to be matched direction, minimum apart from sum between respective vertices, and when this apart from the sum minimum value during less than a pre-set threshold value, judge the success of constituency to be matched and template matches, with the constituency shape after the shape of template after this step c3 rotation, convergent-divergent is as match.And for without the summit shape, can be rotated described template, convergent-divergent makes that this template is identical with constituency to be matched direction, the some random pickup point on template and the closest approach between constituency to be matched apart from sum for minimum.
The regular shape that is pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon etc.; also can comprise other self-defined shapes; all belong to the technical scheme of the present invention under conceiving, should be included in protection scope of the present invention.
In actual applications, the user can freely select whether smoothing processing or process of fitting treatment to be carried out in the constituency.One free sectional drawing pattern for example is set, and under this pattern, the closed-curve shape that the user inputs is no longer through aftertreatment, and directly intercepts scope corresponding with the constituency in full-screen image with interior image.If close free sectional drawing pattern, utilize the whether shape such as similar rectangle, circle, triangle of shape that above-mentioned constituency and the matching process of the regular shape that is pre-stored in mobile terminal judge the constituency.If judge by analysis the similar rectangle of the shape in constituency, to utilize the method that is shaped as the regular shape that is complementary in above-mentioned match constituency be immediate rectangle with the constituency shape adjustments in system, with interior image, cut-away view is as rectangular take this rectangle as scope corresponding with the constituency in the constituency of aftertreatment intercepting full-screen image.If in the situation that close free sectional drawing pattern, the shape in constituency is not all mated through the regular shape that judges and system prestores, and only smoothing processing is carried out in this constituency.
When the user wants a certain topography in screen printing, can draw a closed curve on touch-screen.The system backstage judges whether local screen's sectional drawing function is opened, if do not open, and undo; If opened, determine to judge that whether free sectional drawing pattern opens, and then intercepts topography and is presented on current interface behind the constituency.Can the operation such as preserve, share to this picture that intercepts out.If select to preserve, this pictures just is saved in the position of acquiescence on mobile terminal or appointment; If select to share, can select to share the social network sites such as microblogging, QQ space, can also use note, bluetooth etc. to be sent to other user terminals.
Because the user at any time may be at any interface intercepting picture, because the comparatively convenient and swift mode that need arrange opens or closes local sectional drawing function, such as the shortcut with the local sectional drawing function of opening/closing is arranged in the screen drop-down menu; Perhaps utilize acceleration transducer, when recognizing the user in setting-up time during double click mobile phone side, the local sectional drawing function of opening/closing.
Particularly, as shown in Figure 1, take smart mobile phone as example, the present invention also provide a kind of embodiment smart mobile phone realize the realization flow of the method for sectional drawing by touch-screen, its step comprises:
001, start local screen's sectional drawing function;
002, the intercepting full-screen image is the initialization constituency and shows;
003, the user inputs sliding trace in the initialization constituency;
004, judge whether described sliding trace comprises closed curve, if, execution in step 005, otherwise, change step 006 over to;
005, determine that the zone that this closed curve surrounds is the constituency, continue step 009;
006, judge whether sliding trace is at least two zones with the initialization electoral district division, if, execution in step 007, otherwise change step 008 over to;
007, the instruction of user's input selection determines that wherein a zone is the constituency, continues step 009;
008, the operation of input sliding trace is invalid;
009, judge whether free sectional drawing pattern opens, if, execution in step 014, otherwise, execution in step 010;
010, described constituency and the regular shape that is pre-stored in mobile terminal are mated;
011, whether the match is successful, if, execution in step 012, otherwise execution in step 013;
012, the match constituency be shaped as the regular shape that is complementary, continue step 014;
013, the outline in described constituency carried out smoothing processing, continue step 014;
014, scope corresponding with the constituency in full-screen image is saved as the cut-away view picture.
The present invention also provides a kind of mobile terminal of realizing sectional drawing by touch-screen, comprising:
Start unit is used for starting local screen's sectional drawing function, and the intercepting full-screen image is the initialization constituency and shows;
The track capturing unit be used for to catch and sliding trace that recording user is inputted in the initialization constituency;
The constituency determining unit, be used for identifying described sliding trace and comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
The picture editting unit is used for the scope that full-screen image is corresponding with the constituency and saves as the cut-away view picture.
Preferably, described constituency determining unit is used for identifying described sliding trace and comprises a closed curve, refers to for detection of whether comprising two identical point coordinate in sliding trace.
Described constituency determining unit is identified is that the sliding trace of an open curve refers to this sliding trace by intersecting with the border in initialization constituency with the initialization electoral district division at least two zones, thereby and this border is common consists of at least two closed curves.
Further, described mobile terminal also comprises a constituency post-processing unit, be used for described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
In the present embodiment, described constituency post-processing unit comprises:
The constituency reading unit is used for reading summit number and the center point coordinate in constituency to be matched;
Template is chosen the unit, is used for choosing with the same number of regular shape that prestores in the summit in constituency to be matched as template;
The template adjustment unit, being used for the described template of translation makes the central point of this template overlap with the central point in constituency to be matched, to described template be rotated, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of distance between respective vertices is minimum, makes perhaps that this template is identical with constituency to be matched direction, the some random pickup point on template is minimum with the variance of the closest approach distance between constituency to be matched;
The template matches unit is used for working as this minimum variance less than a pre-set threshold value, judges the success of constituency to be matched and template matches;
Match unit, constituency is used for the constituency shape after as match with described shape of template after rotation, convergent-divergent.
In the present invention, the regular shape that is pre-stored in described mobile terminal comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon etc., also can comprise other self-defined shapes.
Above content is in conjunction with concrete optimal way further description made for the present invention, should not assert that concrete enforcement of the present invention is confined to above explanation.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, within the protection domain that the claim that all should be considered as being submitted to by the present invention is determined.
Claims (8)
1. a method that realizes sectional drawing by touch-screen, be applied to mobile terminal, and its step comprises:
A, start local screen's sectional drawing function, the intercepting full-screen image is the initialization constituency and shows;
B, catch and sliding trace that recording user is inputted in the initialization constituency;
C, the described sliding trace of identification comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps,
Identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
D, scope corresponding with described constituency in full-screen image is saved as the cut-away view picture.
2. the method that realizes sectional drawing by touch-screen according to claim 1, is characterized in that, in step c, the described sliding trace of identification comprises a closed curve, refers to detect comprise two identical point coordinate in sliding trace.
3. the method that realizes sectional drawing by touch-screen according to claim 2, it is characterized in that: in described step c, sliding trace refers to sliding trace by intersecting with the border in initialization constituency with the initialization electoral district division at least two zones, and this border is common consists of at least two closed curves.
4. according to claim 1 and 2 or 3 described methods that realize sectional drawing by touch-screen, it is characterized in that, after described step c determines the constituency, steps d also comprises before preserving the cut-away view picture: step c0, described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
5. the method that realizes sectional drawing by touch-screen according to claim 4 is characterized in that: step c0 mates described constituency and the regular shape that is pre-stored in mobile terminal, and the regular shape that is complementary that is shaped as in match constituency comprises:
C1, read summit number and the center point coordinate in constituency to be matched;
C2, choose with the same number of regular shape that prestores in the summit in constituency to be matched as template;
C3, the described template of translation make the central point of this template overlap with the central point in constituency to be matched, to described template be rotated, convergent-divergent makes that this template is identical with constituency to be matched direction, the variance of distance between respective vertices is for minimum, makes perhaps that this template is identical with constituency to be matched direction, the some random pickup point on template is minimum with the variance of the closest approach distance between constituency to be matched;
C4, when this minimum variance less than a pre-set threshold value, judge constituency to be matched and template matches the success;
C5, the constituency shape with described shape of template after step c3 rotation, convergent-divergent after as match.
6. the method that realizes sectional drawing by touch-screen according to claim 5, it is characterized in that: the regular shape that is pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon.
7. a mobile terminal of realizing sectional drawing by touch-screen, is characterized in that, comprising:
Start unit is used for starting local screen's sectional drawing function, and the intercepting full-screen image is the initialization constituency and shows;
The track capturing unit be used for to catch and sliding trace that recording user is inputted in the initialization constituency;
The constituency determining unit, be used for identifying described sliding trace and comprise a closed curve, determine that the zone that this closed curve surrounds is the constituency, perhaps identifying described sliding trace is an open curve, and this sliding trace is at least two zones with the initialization electoral district division, determines that according to user's selection instruction a zone is the constituency;
The picture editting unit is used for the scope that full-screen image is corresponding with the constituency and saves as the cut-away view picture.
8. the mobile terminal of realizing sectional drawing by touch-screen according to claim 7, it is characterized in that: also comprise a constituency post-processing unit, be used for described constituency and the regular shape that is pre-stored in mobile terminal are mated, the match constituency be shaped as the regular shape that is complementary; If it fails to match, the outline in described constituency carried out smoothing processing.
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