JPH0281262A - Document layout recovering system - Google Patents

Abstract

PURPOSE:To prevent the generation of a disturbance of a display screen by transferring display image data of a component having no relation to editing which is drawn back in advance only onto a picture drawing point of an editing object at the time of editing the component. CONSTITUTION:A document image recovering means reads out successively data of the corresponding position of drawback image data on a drawback buffer 83 with respect of a generated picture drawing point, and writes it in a picture drawing point on a display memory 6. It is executed with regard to all picture drawing points of a graphic or a character. Accordingly, only a part of a displayed editing object can be replaced with document image data of its background, and a recovery range of a display can be limited to only a range in which the character and the graphic, etc., are displayed. In such a way, a result of editing can be displayed without scarcely disturbing a screen display.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a document layout editing system.

In particular, the present invention relates to a document layout recovery method suitable for performing high-speed editing processing on layout display.

[Conventional technology]

A conventional document layout editing system in which text and diagrams can be freely superimposed is the one shown in Nikkei PC June 8, 1987 issue, pp. 256-257.

In such a layout editing system, when deleting or adding text in a document, the text after the edited part, including figures and tables, is erased from the screen, redrawn, and redisplayed. .

Furthermore, when moving or deleting a figure, the rectangular range involved in the editing process is first erased from the display, and then redrawn and displayed again.

The method for drawing characters and figures in the bitmap display used in the following explanation is based on 'Fundamentals
of InteractiveComputer
Graphics' 1982゜J, D, FOL
This is a known method described in standard raster graphics textbooks such as those written by EY&A and VANDAM.

[Problem to be solved by the invention]

When the display is restored using the layout recovery method of the prior art described above, for example, when editing a text, not only the text but also the overlapping diagrams, tables, and other document components that are unrelated to the text editing are temporarily erased along with the text. The indication must be restored by redisplaying. For this reason, it is difficult for the user to view the display screen because it is disturbed every time he edits it, and the more complex the document is, the more time it takes to display parts unrelated to editing.
There is a problem that the processing response to editing operations is slow.

An object of the present invention is to recover the display of the document layout without disturbing the display of document components unrelated to editing when editing a document in which text and figures overlap freely, and to recover the display of the document layout faster than display recovery by redisplaying. The aim is to realize this.

[Means to solve the problem]

The above object is achieved by the following means.

(1) Document image data save buffer.

(2) Means for storing document image data consisting of elements other than the elements of the collected document in a save buffer. (3) Means for generating drawing coordinate points of figures and characters.

(4) A document image recovery means that reads the data stored in the save buffer in (2) corresponding to the coordinate point generated in (3) and writes it into the coordinate position of the display memory.

[Effect]

When a user selects an element to be edited among the constituent elements of a document, the document image data excluding the element to be edited is saved.

When the user instructs an element to be edited, such as moving or deleting, the specified editing target is deleted, the document image data is recovered, and the new editing results are then displayed again. What is the method for generating drawing coordinate points when erasing the editing target?

When the object to be edited is a character, the drawing points of the figure or character are sequentially determined according to the character attributes, and when the object is a figure, according to the drawing parameters.

The document image recovery means sequentially reads the data at the corresponding position of the saved image data on the save buffer with respect to the generated drawing point, and writes it to the drawing point on the display memory. By doing this for all the drawing points of all figures or characters, you can replace only the displayed part to be edited with the background document image data, and the recovery range of the display can be expanded to Editing results can be displayed without disturbing the screen display.

Furthermore, compared to a method of restoring the display of components of other documents that are not being edited by redisplaying, it is sufficient to simply transfer image data within the necessary minimum range for display recovery, and an improvement in display recovery speed can be expected. This improves the response speed for editing a single document or figure.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an example of hardware related to the present invention.

In this figure, 2 is an arithmetic processing unit, 3 is a main memory i, 4
12 is a display processing device, and 12 is an external storage device.

9 is the external storage control device, and 13 is the keyboard.

Reference numeral 10 indicates a keyboard control device, 11 a dictionary memory for converting Hagana to Kanji, and 1 a common bus connecting them. Further, the display processing device 4, the character font memory 52, and the display memory 6 are connected by a display bus 14. The display memory 6 is divided into a display part that is actually displayed on the screen and a non-display part.

The display control device 7 periodically reads out the display portion of the display memory 6 and sends it to the display device 8 as a video signal, thereby always performing a display that reflects the contents of the display portion of the display memory 6.

The main memory 3 stores programs and data according to the present invention, and the arithmetic processing unit 2 is stored on the main memory 3 between the external storage device 12 and the main memory 3 via the external storage control device 9. Save and restore data and programs. It also receives input from the keyboard 13 from the user via the keyboard control device 10, performs kana-kanji conversion according to the contents of the dictionary memory 11 as necessary, and stores the conversion results in the main memory 3 as document data.

Further, when the arithmetic processing device 2 issues a display processing request to the display processing device 4, the display processing device 4 develops characters 2, graphics, images, etc. into the display memory. For example, in the case of character display, in response to an instruction from the arithmetic processing unit 2, the arithmetic processing unit 2 retrieves the font data of the specified character from the character font memory 5, and stores it in the display memory 6 corresponding to the display position specified by the arithmetic processing unit 2. This is achieved by transferring font data to the address.

Note that data on the display memory corresponding to the document layout displayed on the display screen is herein referred to as document image data.

FIG. 3 shows an example of an integrated document realized by this embodiment, and the document consists of a plurality of rectangular ranges called areas. Text, figures, images, etc. can be displayed individually in each of these areas.

A text area 31 is provided on the entire surface of the paper 30 excluding the margin area 33. In addition, the drawing or image regions (32-(α) to 32-(C)) can be arranged at arbitrary positions and sizes, and are displayed according to the order in which the regions overlap. area 32
is exclusive/non-exclusive.

Transparent/opaque attributes can be specified; if it is exclusive, the text will be displayed avoiding that area; if it is non-exclusive, the text will be displayed ignoring that area. Therefore, the main text and its area are displayed overlapping each other.

Further, if the area is transparent, the area overlaid below the area is displayed transparently, and if it is opaque, the area overlaid below is not displayed.

Document editing is the text included in each area.

This is achieved by editing diagrams and images and performing area operations such as moving and copying each area.

The structure of such a document can be managed using a table as shown in FIG. The page management table 50 is a table for managing attribute information for each page, including paper size 51 and paper direction 52 indicating the length/width of the paper. The area table 60, which has information such as top, bottom, left, and right margin values 53, and a pointer 55 to the area table 6o of the area existing on the page, is connected in a list structure starting from the lowest area due to display overlap. .

Connection is performed using a pointer 61 to the next area table.

The area table 60 includes area attributes 62 such as transparent/opaque attributes and exclusive/non-exclusive attributes, the vertical and horizontal sizes 64 of the area, and the area position 65 at the upper left corner of the area in a coordinate system whose origin is the paper origin 34 in FIG. Retained based on. It also has an area type 66 that indicates the type of data to be displayed within the area (text 2 figures, images, tables, etc.) and an area number 67 that specifies the data 7o within the area.

The area data 70 is uniquely identified by the area number,
It has document data within the area according to the area type 66. For example, a text has character data and its attribute data, a line data, a figure has a figure primitive identifier and its parameters, an image has bitmap image data, etc.

These data are described in a coordinate system whose origin is the upper left corner of each area.

Layout display is achieved as follows.

That is, the list of area table 60 is referred to in descending order of overlap, and area size 64. The area data 70 indicated by the area number 67 is interpreted and displayed according to the area type 66 at the position on the document indicated by the area position N65. At this time, it is displayed according to the area attribute information 12.

In the manner described above, an integrated document as shown in FIG. 3 can be displayed on the screen. In such a document, free overlap is allowed between the main text and each area, so there is a high degree of freedom in layout.

However, in such a document, for example, the area 32-(α
) If you move the triangle in area 32-(b), the parts of the table and main text that were hidden by the triangle will remain missing, so in order to keep the layout display always representing the printed image, , it is necessary to perform display recovery even for such areas that are not being edited. Also, the edited area is
If it is not in the foreground as shown in area 32-(b), it will be hidden by an area in the foreground, making it difficult to edit within the area.

Therefore, as shown in FIG. 5, the area 32-
(b) is displayed in the foreground only during editing so that the user can see all of its contents.If editing in this area destroys the display in other areas, it is displayed at high speed. A layout editing method that recovers is required.

Next, a processing method for quickly recovering the display of this layout will be described.

FIG. 6 shows the structure of the table and display memory used for this purpose. Display memory 6 is display part 8
Document image data divided into 1 and non-display portion 82 and stored in 1 display portion 81 is displayed on the screen. 86.8
7 indicates two diagonal points indicating the display range of the area being edited on the paper. A save buffer 83 having the same size as the display portion 81 is provided in the non-display portion 82, and save image data 84 of the display portion 81 is stored therein. The evacuation buffer 83 is managed by an evacuation buffer management table 90, and an evacuation buffer that indicates whether the evacuation buffer 83 is empty or contains evacuation data;
It has a flag 91 and an image save range field 92 that indicates the document display range (coordinates of two diagonal points) in which the image is saved in the coordinate system on the display screen.

In the above configuration, display processing according to the present invention when editing a festival will be described below.

FIG. 7 shows an example of text editing in a document in which text and graphic areas of the same size are displayed overlapping each other.

First, when starting to edit a text, as shown in step ■, figures etc. that are not related to text editing are sequentially written onto the display memory 6, and after simply transferring them to the save buffer 83, the text is transferred to the display memory. 6 Write on top. In this figure, the broken line indicates the display range of the character pattern of each character.

Now, if we consider the case of inserting the character ``se'' between the characters ``i'' and ``u'', first, by character insertion, it is necessary to shift the display position of the characters after ``u'' to the rear in order. . For this reason, it is necessary to erase the characters once, but simply erasing them also erases the figures within each rectangle surrounded by broken lines, which disrupts the layout display.

Therefore, by providing a display recovery means for character strings such as "U" and following, and executing this, the display range of characters according to the size and shape of each character can be restored to the save buffer 83.
The corresponding part of the document image data such as figures stored in is read out and written into the display memory 6, and as in step (2), the document display after "U" is returned to the state before displaying characters. After that, step
Display the new sequence of sentences after inserting .

Here, the character range display recovery means which plays an important role will be explained using FIGS. 1 and 8.

FIG. 8 shows the general management data structure of a text. Character string data 210 includes character string codes 211 and character attributes 212 such as double-width and italic for the arrangement of character strings in a text. have

Line control data is character string data 21 for each line of text.
A bullet pointer pointer 201 that points to the character data at the beginning of a line in 0. Standard character size for that line: 202, character spacing: 20
It has 32 line spacing 204.

Here, when restoring the document layout display for the display range of a character string, by performing the processing as shown in Figure 1 for each character in the character string, it is possible to perform display restoration processing according to character attributes.

Below, this character range display recovery processing 220 will be explained in detail.

First, the character display position on the screen display is determined from the line column position of the character to be erased (221). The vertical position on the screen is the font size 2 between the first line and the line of the character to be erased.
02, the line spacing 204, and the horizontal position is determined by adding the font size 202.02 in that line. can be determined from the character spacing 203. Next, read the character attribute 221 of the character to be erased from the character string data 21o (221),
Sequentially generate each coordinate point of the rectangular range of the character font according to the character size.
In the example of a character pattern consisting of coordinate points, the diagonally shaded part is
The displayed brightness is different from the part without diagonal lines, and the shape of an "L" is displayed. In this pattern, coordinate points on the display screen corresponding to each of the nine points are sequentially generated.

When double-width is specified in the character attribute, (224)
, 231, the position of the coordinate point is doubled in the horizontal direction to generate two coordinate points horizontally for one point (
225).

When italic is specified in the character attribute (226),
In proportion to the upward display position in the vertical direction, the generation of coordinate points is shifted to the right to generate coordinate points for each point on the screen as shown in 232 (227).

The document image data on the save buffer corresponding to each coordinate point thus generated is read out and transferred to the coordinate point position on the display screen (228).

When such processing is performed for all points within the rectangular range of the character pattern, recovery of the document layout display for the character range is completed.

With this method, when editing a text, the display of figures and tables other than the text is not disturbed, and the editing speed is faster than erasing the editing range of the text and then redisplaying it.

Note that in the above example, recovery processing is performed for each point on the screen, but with a normal display processing device, several points can be processed at once, and recovery can be performed at high speed.

Next, the case where five figures are edited on the screen displaying the document layout will be explained using FIG. 9.

This figure shows a case where a hatched circle is moved. First, document image data from which figures have been removed is saved in the save buffer 83 in advance.

When the user instructs the user to move, the document image data is cut out and transferred to the display memory 6 for the portion where the 1 yen is displayed as shown in step (2). Redraw the circle at the new movement position as shown in ■.

Of these, the erasure of the figure in step (2) is realized by the method shown in the flowchart 100 of FIG. First, when the radius of the circle to be erased and the original vibration of the center position are given, as in drawing a circle in normal Rask graphics, as shown in Figure 9 (
The coordinate values of the surrounding points of the circle such as 105 in b) are sequentially generated (101).

Here, at the points around the circle at each y-coordinate (105-(
α) and the straight line (105-(e)) surrounded by
When points α) to 105 (e) are drawn according to the data of the hatching pattern, a hatched circle as shown in step (2) in FIG. 8 can be displayed. In order to erase this, instead of the hatching pattern, the process (102) of reading the document image data on the save buffer 83 corresponding to the display position and writing it to the display memory 6 is performed using the y coordinate from the top to the bottom of the circle. (103). According to this method, data is transferred only for the necessary range of the figure to be drawn, so the display of other text etc. is not disturbed while the figure is being edited, and it is easy to erase the edited range of the figure and redisplay it. Comparatively, it is faster.

〔Effect of the invention〕

According to the present invention, in a document processing system that edits an integrated document consisting of constituent elements such as sentences, figures, two tables, etc., when editing constituent elements, display image data of constituent elements unrelated to editing that has been saved in advance is provided. Since the display is restored by transferring the data only to the drawing point to be edited, there is an effect that the display screen is not disrupted, such as the rectangular range related to editing being temporarily erased.

In addition, display recovery can be performed faster than a method in which the rectangular area is once erased and all the constituent elements are redisplayed and recovered.

[Brief explanation of the drawing]

FIG. 1 is a document layout display recovery processing flow for a single character display range in an embodiment of the present invention, FIG. 2 is a configuration diagram of an apparatus for implementing the present invention, and FIG. A diagram showing an example, FIG. 4 is a document data configuration diagram for realizing integrated document processing. Figure 5 is a diagram showing an example of document display during editing within a region, Figure 6 is a configuration diagram of the 5 display memory and save buffer management table, Figure 7 is an explanatory diagram of the processing procedure for text editing, and Figure 8 is FIG. 9 is an explanatory diagram of a processing procedure for graphic editing, and FIG. 10 is a flowchart of document image recovery processing for a graphic display range. 6... Display memory, 8... Display device, 83... Save buffer, 84... Document image data, 100
...Document image recovery processing for graphic display range, 200.
・Row control table, character string data 210, 212...
Character attribute, 220... Character range display recovery processing. Broom drawing collection + drawing drawing buffer 83 drawing drawing drawing compilation drawing

Claims (1)

[Scope of Claims] 1. In a document processing system that includes at least a display memory, a document image data save buffer, and a display processing device, and that edits a document consisting of a plurality of constituent elements such as sentences and charts. a first means for storing document image data consisting of components other than the target components in the save buffer; a second means for generating display coordinate points on the screen for characters, figures, etc.; and a second means for generating display coordinate points for characters, figures, etc. on the screen; A document layout recovery method characterized in that a third means is provided for reading the document image and data at a position corresponding to the position and writing the document image and data at a position corresponding to the display coordinate point on the display memory at an address corresponding to the position of the display coordinate point. 2. In the second means, based on the character attribute information,
2. The document layout recovery method according to claim 1, further comprising means for generating drawing coordinate points of individual characters.