Method and system for streaming restoration of layout spaces

Abstract

The invention discloses a layout space streaming restoring method. The method comprises the steps of: acquiring three adjacent characters in a layout; calculating a character pitch between two adjacent characters, and calculating a difference value of the character pitches; if the difference value of the character pitches is smaller than a preset difference threshold value, not inserting a space; if the difference value of the character pitches is not smaller than the preset difference threshold value, calculating the sum of a right boundary value of the first character and a left boundary value of the second character to serve as a boundary value sum, and calculating the difference value of first character pitch and the boundary value sum to serve as a judgment value; and if the judgment value is larger than a word width value of the space character with same type of the first character, inserting the space behind the first character, otherwise, not inserting the space. Therefore, by calculating the blank space between two adjacent characters, a phenomenon whether the pitch is uniform due to the layout or is caused by the space character can be judged; if the difference value of the two character pitches is within the threshold value, the spacing is uniform, and the space is not required to be inserted; if the difference value is large, the space can be inserted after comparison and judgment; and therefore, when the spaces required by the layout is converted in a streaming mode, the required spaces can be increased by restoring the space, so that display of the layout is relatively accurate.

Description

technical field [0001] The invention relates to the field of electronic document data processing, in particular to a processing method and system for restoring logical spaces in a format document to corresponding spaces in a stream document. Background technique [0002] A layout document is a document independent of software, hardware, operating system, presentation or printing equipment, such as layout documents in pdf, ceb, cebx and other formats. A layout document can contain multiple pages, and each page is composed of a number of graphics elements that are independent of devices and resolutions. Layout technology refers to the technology of solidifying and presenting various digital content objects such as text, graphics, images, audio and video, etc. according to certain layout rules. The feature of the layout document is that the layout is fixed and does not run, that is, what you see is what you get (WYSIWYG for short), so that the presentation effect of the electr...

AI Technical Summary

Problems solved by technology

[0009] The reasons for the above phenomenon are: (1) There are no space characters in the relevant English text strings in the format document, but the character spacing (charspace) or the absolute coordinate position of the characters in the fixed format is used to express the logical spaces on the format; (2 ) and there is no space-equivalent expression in the structured flow information of the layout document, such as using the Maker tag {Type=space, nCount=n number of spaces}; (3) In the end, only the structured flow of the layout document can be relied on Format information is drawn according to certain typesetting rules when it is rendered (Render), but the results currently presented are as follows: figure 2 , image 3 as well as Figure 5 As shown, there are still related defects: this is because the existing drawing and typesetting algorithm uses charspace information when rendering the style sheet; while using the font information to render the charspace, it ignores the charspace and equalizes the word spacing

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