CN1326071C - Electronic file display processing method and system - Google Patents

Abstract

A method and system for displaying and processing electronic document can be carried on an information platform, and can display and process the character string of an electronic document with a specific format in a specific mode, and display the contents of the electronic document, such as characters, figures, tables and the like, on a computer screen through a specific window; the electronic file display processing method and system at least comprise the following steps: the device comprises a reading module, a display window establishing module, a dot matrix graph establishing module, a data object describing module, a blank eliminating module and a display control module; the method has the advantages that blank parts in the displayed file contents can be eliminated, and the displayed file contents have more beautiful typesetting effects.

Description

Electronic file display processing method and system

technical field

The present invention relates to a computer information technology, in particular to a method and system for displaying and processing electronic files, which can be carried on an information platform, such as an information platform under the Linux operating system, to record strings of electronic files in a specific format, For example, the character string of an electronic file in PDF (PortableDocument Format) format is displayed in a specific way, and the content of the PDF electronic file, including text, graphics, tables, etc., is displayed on the computer through a specific window, such as a QT window. On the screen, it can eliminate the blank part in the displayed file content, so that the displayed file content has a more beautiful typesetting effect.

Background technique

PDF (Portable Document Format) is an electronic file format widely used in government and commercial organizations. It has cross-platform characteristics, so it can be displayed on different computer information platforms, such as computers under Linux, Windows, and Unix operating systems The information platform allows government and commercial organizations or users using different information platforms to exchange documents conveniently.

However, when the PDF electronic file is displayed through different windows, for example, when displayed through the QT window, some default formats in the PDF electronic file often cannot be displayed in the QT window in the required manner. For example, most PDF electronic files include many frames. When these frames are displayed in the QT window, there are usually many blank parts on the display page, which makes the overall layout of the display page unattractive.

Contents of the invention

In order to overcome the above-mentioned shortcoming of prior art, the main purpose of the present invention is to provide a kind of electronic file display processing method and system, when it can display the content of PDF electronic file on the computer screen through QT window, can eliminate display page. The blank part makes the displayed file content have a more beautiful typesetting effect.

Based on the above and other purposes, the electronic document display processing method and system of the present invention can be carried on an information platform, such as an information platform under the Linux operating system, for a character string of an electronic document in a specific format, such as PDF (Portable Document Format) The character string of the electronic file in PDF format is displayed in a specific way, so that the content of the PDF electronic file, including text, graphics, tables, etc., is displayed on the computer screen through a specific window, such as a QT window.

The electronic file display processing system of the present invention at least includes: a reading module, which can read the character string of the electronic file, and obtain each data object contained in the electronic file and its related display attributes; a display window building module, which can A display window is established in the window, and the content of the electronic file is displayed in the display window; a dot matrix diagram establishment module can establish a dot matrix diagram in the display window; a data object drawing module can be read by the reading module Each data object obtained is described on the dot matrix diagram according to its related display attributes; the blank elimination module can eliminate the blank when the data object drawing module finds that there is a blank part on the side of a certain data object during the drawing process The module is activated to roughly overlap the upper left corner position and the lower right corner position of the data object to the upper left corner coordinates and the lower right corner coordinates of its display frame, thereby eliminating the blank part; then the data object drawing module will eliminate the blank part The content of the data object is drawn on the dot matrix diagram; and the display control module can display the dot matrix diagram drawn by the data object drawing module on the screen of the computer information platform through the window.

The electronic file display processing method of the present invention at least includes: reading the character string of the electronic file, obtaining each data object contained in the electronic file and its related display attributes; establishing a display window in the window; Create a dot matrix diagram; draw each data object read on the dot matrix diagram according to its related display attributes; if there is a blank part on the side of a certain data object, then the upper left corner of the data object The position and the lower right corner position roughly overlap to the coordinates of the upper left corner and the lower right corner of the display frame, thereby eliminating the blank part; then, the content of the data object after the blank is eliminated is drawn on the dot matrix; and the drawn The dot matrix diagram is displayed on the screen of the computer information platform through this window.

To sum up, the electronic document display processing method and system of the present invention can eliminate the blank part in the displayed document content, so that the displayed document content has a more beautiful typesetting effect.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the object-oriented component model of the electronic file display processing method and system of the present invention;

Fig. 2 is the flowchart of the calculation method of the blank elimination program executed by the electronic file display processing method and system of the present invention;

Fig. 3A is a schematic diagram of a blank part in the content of the file displayed by the existing display processing method;

FIG. 3B is a schematic diagram showing an example of the blank portion eliminated by the processing method of the present invention.

Detailed ways

Example

Embodiments of the electronic file display processing method and system of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is the basic structure of the object-oriented component model (object-oriented component model) of the electronic document display processing system of the present invention (the part included in the dotted line frame indicated by the label 100). As shown in the figure, in practical applications, the electronic file display processing system 100 of the present invention is carried on a computer information platform 10, such as a computer information platform under the Linux operating system, for a character string of an electronic file 20 in a specific format, such as The character string of the electronic file 20 in the PDF (PortableDocument Format) format is displayed in a specific manner, whereby the content of the electronic file, including text, pictures, tables, etc., is passed through a specific window, such as a QT window, Displayed on the computer screen 11 of the computer information platform 10; it can eliminate the blank part in the displayed file content, so that the displayed file content has a more beautiful typesetting effect.

The object-oriented component model of the electronic document display processing system 100 of the present invention at least includes: (a) reading module 110; (b) display window building module 120; (c) point matrix diagram building module 130; (d) data object depiction Module 140 ; (e) Blank Elimination Module 150 ; and (f) Display Control Module 160 .

The reading module 110 is used to read the character string of the PDF electronic file 20, to obtain all data objects (such as text, graphics, tables, etc.) in the PDF electronic file 20, and the relevant display attributes of these data objects, including text (font, style, size, color, etc.), graphic display properties, table display properties, etc.

The display window creation module 120 can create a display window in the QT window, and display the content of the PDF electronic file 20 through the display window. This display window establishment module 120 is to utilize, for example XcreateGC in the Xlib of X Window to establish, and wherein each window graph display property, comprises foreground color, background color, line width etc., is stored in drawing environment (GraphicContext, GC )middle.

The dot matrix image building module 130 can be used to create a dot matrix image 131, and use the dot matrix image 131 to describe the content of the PDF electronic file 20, including text, graphics, tables and so on. The dot matrix map creation module 130 is created by using, for example, XcreatePixmap in Xlib.

The data object rendering module 140 can take each data object read by the reading module 110 from the PDF electronic file 20, including text data objects, graphic data objects, table data objects, etc., according to the predetermined display attributes of each data object , drawn in a dot-matrix manner on the dot-matrix diagram 131 created by the dot-matrix diagram building module 130 described above. If the data object drawing module 140 finds a certain data object during the drawing process, such as the text data object 30 shown in FIG. Send a blank cancellation activation message to the blank cancellation module 150 .

The blank elimination module 150 can execute the blank elimination program in response to the blank elimination activation information sent by the data object drawing module 140 to eliminate the blank portion 31 beside the text data object 30 . The basic idea of this blank elimination program is to overlap the upper left corner position (TX ₁ , TY ₁ ) and the lower right corner position (TX ₂ , TY ₂ ) of the text data object 30 to the upper left corner coordinate (X ₁ ) of the display frame 132 thereof. , Y ₁ ) and the coordinates of the lower right corner (X ₂ , Y ₂ ), the calculation method is shown in Figure 2. After the blank is eliminated, the blank eliminating module 150 will instruct the data object drawing module 140 to draw the data object 30 after the blank is eliminated in the dot matrix 131 . FIG. 3B is an example of displaying the text data object 30 in the frame 132 after the blank portion 31 shown in FIG. 3A is eliminated.

The display control module 160 can display the text, graphics, tables, etc. drawn by the data object drawing module 140 in a dot matrix on the dot matrix diagram 131 on the screen 11 of the computer information platform 10 through the QT window.

In actual operation, the electronic file display processing system 100 of the present invention first makes the reading module 110 read the character string of the PDF electronic file 20, and obtains all data objects in the PDF electronic file 20 (such as including text, graphics, tables, etc.) etc.), and the relevant display attributes of these data objects, including text format (font type, style, size, color, etc.), graphic display attributes, table display attributes, etc.; The display window is to use the pre-built drawing environment (Graphic Context, GC) to set up the display window in the QT window; then the point matrix image 131 is established by the point matrix image building module 130.

Next, let the data object drawing module 140 draw each data object read from the PDF electronic file 20 by the reading module 110 on the dot matrix diagram 131 in a dot matrix manner according to the relevant display attributes of each data object. If the data object drawing module 140 finds a certain data object during the drawing process, such as a text data object 30, when there is a blank part 31 on the side, it will make the blank removing module 150 execute the process shown in Figure 2 to eliminate the data object 30. The blank part 31 on the side, and then let the data object drawing module 140 draw the content of the data object 30 after the blank is eliminated on the dot matrix 131 . Finally, the display control module 160 is ordered to display the text, graphics, tables, etc. drawn by the data object drawing module 140 in a dot matrix on the dot matrix diagram 131 on the screen 11 of the computer information platform 10 through the QT window.

In a word, the present invention provides a novel method and system for displaying and processing electronic files, which can be mounted on an information platform to display and process the character strings of electronic files in a specific format in a specific way, so that the strings of the electronic files The content is displayed on the computer screen through a specific window; its feature is that it can eliminate the blank part of the displayed file content, so that the displayed file content has a more beautiful layout effect. Therefore, the present invention has better progress and practicality than the prior art.

Claims (8)

1. A method for displaying and processing an electronic file, which can be mounted on a computer information platform to perform display processing in a specific manner on a character string of an electronic file in a specific format, and display the content of the electronic file on the computer information platform through a specific window on the screen; it is characterized in that the electronic file display processing method at least includes: Read the character string of the electronic file, and obtain each data object contained in the electronic file and its related display attributes; Create a display window in this window; Create a dot matrix diagram in this display window; Draw each data object read on the dot matrix diagram according to its related display attributes; If it is found that there is a blank part on the side of a certain data object, the position of the upper left corner and the lower right corner of the data object are overlapped to the coordinates of the upper left corner and the lower right corner of the display frame, thereby eliminating the blank part; The content of the blanked data object is drawn on the dot matrix; and The completed dot matrix diagram is displayed on the screen of the computer information platform through the window. 2. The electronic file display processing method according to claim 1, wherein the computer information platform is a computer information platform under the Linux operating system. 3. The electronic file display processing method according to claim 1, wherein the electronic file in the specific format is an electronic file in PDF format. 4. The electronic file display processing method according to claim 1, wherein the window is a QT window. 5. An electronic file display and processing system, which can be mounted on a computer information platform to display and process the character strings of an electronic file in a specific format in a specific way, and display the content of the electronic file on the computer information platform through a specific window on the screen; it is characterized in that the electronic document display processing system at least includes: The reading module can read the character string of the electronic file, and obtain each data object contained in the electronic file and its related display attributes; A display window building module, which can set up a display window in the window, and display the content of the electronic file in the display window; A dot matrix diagram building module, which can create a dot matrix diagram in the display window; The data object drawing module can draw each data object read by the reading module on the dot matrix diagram according to its related display attributes; The blank elimination module, when the data object drawing module finds that there is a blank part beside a certain data object during the drawing process, the blank elimination module is activated, and the upper left corner position and the lower right corner position of the data object are overlapped to its display The coordinates of the upper left corner and the lower right corner of the frame, thereby eliminating the blank portion; then causing the data object drawing module to describe the content of the data object after the blank is eliminated on the point matrix; and The display control module can display the dot matrix diagram drawn by the data object drawing module on the screen of the computer information platform through the window. 6. The electronic file display processing system according to claim 5, wherein the computer information platform is a computer information platform under the Linux operating system. 7. The electronic file display processing system according to claim 5, wherein the electronic file in a specific format is an electronic file in PDF format. 8. The electronic file display processing system according to claim 5, wherein the window is a QT window.

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