CN104111839A

CN104111839A - Absolute positioning method based on canvas

Info

Publication number: CN104111839A
Application number: CN201410366178.8A
Authority: CN
Inventors: 余敬龙
Original assignee: Guangdong Nenglong Education Co ltd
Current assignee: Guangdong Nenglong Education Co ltd
Priority date: 2014-07-29
Filing date: 2014-07-29
Publication date: 2014-10-22

Abstract

The invention discloses an absolute positioning method based on canvas, which comprises the following steps: A. defining a standard reference canvas; B. recording positioning data of the object based on a layout defined by a standard reference canvas; C. determining the scaling ratio of the canvas according to the mapping of the reference canvas and the target canvas; D. and drawing the target object after the object is scaled by the target canvas according to the scaling ratio. According to the method, the stretching of the object in the canvas and the screen adaptation are realized through the mapping of the standard reference canvas and the target canvas, the method keeps the intuition and simplicity of absolute positioning, and can be well adapted to various screen resolutions, so that the applicability of absolute positioning is enhanced by improving an Android absolute positioning mode.

Description

A kind of absolute fix method based on painting canvas

Technical field

The invention belongs to mobile technology field, be specifically related to a kind of absolute fix method based on painting canvas, be suitable for Android mobile device terminal.

Background technology

In existing Android topology, conventional have a LinearLayout, RelativeLayout, TableLayout, FrameLayout, and easy-to-use absolute fix layout type the most directly perceived has been abandoned by Android, topmost reason is exactly the variation that absolute fix layout can not well adapt to screen resolution.

Summary of the invention

For solving the problems of the technologies described above, the object of this invention is to provide a kind of absolute fix method based on painting canvas.

The technical solution used in the present invention is:

An absolute fix method based on painting canvas, is characterized in that comprising the following steps:

A, definition canonical reference painting canvas;

B, layout based on canonical reference painting canvas definition, record the locator data of object;

C, with reference to the mapping of painting canvas and target painting canvas, determine painting canvas scaling;

D, object are pressed after scaling convergent-divergent at target painting canvas, render target object.

Further, the content of described steps A definition is the specification with reference to painting canvas, the Gao Yukuan that this specification is painting canvas.

Further, in described step B, the locator data of object is Gao Yukuan.

Further, described with reference to painting canvas specification and object locator data formation reference layout template file.

Further, described step C comprises the following steps:

C1, utilize layout templates analytics engine to extract layout templates file;

C2, determine the specification of target painting canvas, this specification is the Gao Yukuan of target painting canvas;

The scaling of C3, calculating target painting canvas relative reference painting canvas;

C4, calculate the layout object locator data at target painting canvas.

Wherein, during described C3 comprises: wide pantograph ratio=target painting canvas width/with reference to painting canvas width; High pantograph ratio=target painting canvas height/with reference to painting canvas height.

In described C4: the wide pantograph ratio=target localization of width data * width data; High pantograph ratio=the target localization of altitude information * altitude information.

Described step D is render target object in target painting canvas according to target localization width data and target localization altitude information, forms final page layout.

Beneficial effect of the present invention:

The present invention is by the mapping of canonical reference painting canvas and target painting canvas, stretching and the screen of realizing object in painting canvas adapt to, this method retains the directly perceived and simple of absolute fix, again can the various screen resolution of fine adaptation, thus improvement Android absolute fix mode strengthens the applicability of absolute fix.

Brief description of the drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.

Fig. 1 is fundamental diagram of the present invention;

Fig. 2 is absolute fix method flow diagram of the present invention;

Fig. 3 is target painting canvas positioning flow figure of the present invention;

Fig. 4 is the schematic layout pattern of the specific embodiment of the invention with reference to painting canvas;

Fig. 5 is the schematic layout pattern of specific embodiment of the invention target painting canvas.

Embodiment

Shown in figure 1-Fig. 2, be a kind of absolute fix method based on painting canvas of the present invention, comprise the following steps:

A, definition canonical reference painting canvas;

The content of this step definition is the specification with reference to painting canvas, the Gao Yukuan that this specification is painting canvas.

As Fig. 4, in the upper layout of canonical reference painting canvas (480*720), and layout object only has a Button Login as example;

B, layout based on canonical reference painting canvas definition, record the locator data of object; Wherein, the locator data of this object is Gao Yukuan;

Reference painting canvas specification in above-mentioned A and B and object locator data form reference layout data, layout well after storage layout's data to topology file.

Wherein, C specifically comprises again: as Fig. 3

C1, utilize layout templates analytics engine to extract layout templates file;

C4, calculate the layout object locator data at target painting canvas;

Wherein, the wide pantograph ratio=target localization of width data * width data; High pantograph ratio=the target localization of altitude information * altitude information.

D, object are pressed after scaling convergent-divergent at target painting canvas, and the render target object in target painting canvas according to target localization width data and target localization altitude information, forms final page layout, complete location and present, and see Fig. 5.

As mentioned above, the present invention is by the mapping of canonical reference painting canvas and target painting canvas, stretching and the screen of realizing object in painting canvas adapt to, this method retains the directly perceived and simple of absolute fix, again can the various screen resolutions of fine adaptation, thus improvement Android absolute fix mode strengthen the applicability of absolute fix.

The foregoing is only preferential embodiment of the present invention, the present invention is not limited to above-mentioned embodiment, as long as within the technical scheme that realizes the object of the invention with basic identical means all belongs to protection scope of the present invention.

Claims

1. an absolute positioning method based on canvas, is characterized in that comprising the following steps:

A. Define the standard reference canvas;

B. Based on the layout defined by the standard reference canvas, the positioning data of the object is recorded;

C. Determine the canvas zoom ratio by referring to the mapping between the canvas and the target canvas;

D. After the object is scaled according to the scaling ratio on the target canvas, draw the target object.

2. a kind of canvas-based absolute positioning method according to claim 1, is characterized in that: the content defined in described step A is the specification of reference canvas, and this specification is the height and width of canvas.

3. a kind of canvas-based absolute positioning method according to claim 2, is characterized in that: in described step B, the positioning data of object is height and width.

4. a kind of canvas-based absolute positioning method according to claim 3, is characterized in that: described reference canvas specification and object positioning data constitute reference layout template file.

5. a kind of canvas-based absolute positioning method according to claim 4, is characterized in that: described step C comprises the following steps:

C1. Using the layout template parsing engine to extract the layout template file;

C2. Determine the specification of the target canvas, which is the height and width of the target canvas;

C3. Calculate the scaling ratio of the target canvas relative to the reference canvas;

C4. Calculate the positioning data of the layout object on the target canvas.

6. A kind of absolute positioning method based on canvas according to claim 5, it is characterized in that: described C3 comprises: wide scaling ratio=target canvas width/reference canvas width; High scaling ratio=target canvas height/reference canvas high.

7. A kind of absolute positioning method based on canvas according to claim 6, it is characterized in that: among described C4: Width data * wide scaling ratio = target positioning width data; Height data * high scaling ratio = target positioning height data .

8. a kind of canvas-based absolute positioning method according to claim 7, is characterized in that: described step D draws target object in target canvas according to target positioning width data and target positioning height data, constitutes final page layout.