JPH0337712A - Computer system - Google Patents

Abstract

PURPOSE:To effectively use various adaptive programs by transferring only image data of the area changed by an adaptive program to a server program of a window. CONSTITUTION:An image data area analyzing means 13 calculates an area, which can be displayed in the window with written image data, in accordance with the write area, the window display area, and coordinates in an image data storage means 11 corresponding to the origin of coordinates of the window and transform the calculated area to coordinates in the window. If a part of image data does not exist in the area corresponding to the window in the image data storage means 11, the size and the position of the area corresponding to the window in the image data storage means 11 are so adjusted that only image data in this area is the image data transfer source. Thus, adaptive programs can be executed on a multiwindow system of the server client system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a computer system such as a workstation that is compatible with a server-client type multi-window system.

[Conventional technology]

Conventionally, many computer systems such as personal computers and workstations have a multitasking function that allows them to execute multiple applications.

In order to achieve this kind of multitasking function, one window corresponds to one task, and by opening multiple windows on the display screen, multiple applications running simultaneously can be displayed on one screen. A multi-window system is used.

By the way, in conventional multi-window systems, a method of writing processing results directly to the frame buffer has often been used, but in recent years, processing requests from individual application programs (clients) provided by users are handled using inter-process communication. The server-client method is becoming popular, in which the window is sent to a user process called a server via the server, and all processing related to window operations is performed by the server. According to this method,
It becomes possible to easily create an adaptive program compatible with multi-windows.

[Problem to be solved by the invention]

However, in traditional multi-window systems,
As described above, processing results are written directly from the adaptation program to the frame buffer, and data is accessed from this frame buffer. On the other hand, in the Server/Flyan Furthermore, the programs executed on the system are divided into two: a server that manages screen display, and a client that requests window operations. For this reason, the server
Computer systems compatible with client-type multi-window systems have the problem of being unable to execute adaptive programs created for conventional multi-window systems, and being restricted in the use of adaptive programs.

An object of the present invention is to provide a computer system that allows an adaptive program created for a conventional multi-window system to be executed on a server-client multi-window system.

[Means to solve the problem]

In order to solve the above problems, a computer system according to the present invention includes an image data storage means for storing image data to be written or read out for processing by an adaptive program according to a processing result, and an image data storage means for storing image data to be displayed on a window. a window setting means that holds data regarding a rectangular area within the means and changes the size and position of the rectangular area displayed on the window according to instructions from a user; and an image written in the image data storage means. Image data analysis means for analyzing in which area of the image data storage means a rectangular area containing the data exists, and also for determining whether the image data is included within the rectangular area displayed on the window; , and image data transfer means for transferring a rectangular area to be displayed in a window to a multi-window server program.

[Effect]

When the image data changed by the adaptive program is written to the image data storage means and the written area is notified to the image data area analysis means, the image data area analysis means stores the writing area, the window display area, and the window. An area that can be displayed in a window using the written image data is calculated from the coordinates in the image data storage means corresponding to the origin of the coordinates, and converted into coordinates in the window. Here, if all of the image data is within the area corresponding to the window, that area is used as the image data transfer source, and if part of the image data is not within the area corresponding to the window of the image data storage means. adjusts the size and position of the area so that only the image data in the area corresponding to the window of the image data storage means becomes the image data transfer source. The image data transfer means transfers the image data transfer command and the image data of the rectangular area of the image data storage means to the multi-window server program so that the rectangular area of the image data storage means is displayed in the rectangular area on the window. do.

When the window setting means receives an instruction to change the shape of the window by a user's operation from the multi-window server program, it changes any or all of the data in the held area.

〔Example〕

An embodiment of the computer system according to the present invention will be described below.

FIG. 3 is a configuration block diagram of a workstation showing an embodiment of the computer system according to the present invention. In the figure, 1 is a CRT which is a display device, and 2 is a CRT interface that controls the CRTI and displays windows and data according to various functions. 3 is a keyboard, which is a human-powered device for performing manual operations such as commands and characters. 4 is a keyboard interface that controls human output such as commands and data input from the keyboard 3; A disk 5 stores application programs, adaptive programs, etc. for executing various functions. 7 is disk 6
A disk interface for controlling the human output of data. A main memory 8 stores an operating program that manages the basic operations of the system, and commands and data entered manually from the keyboard 3.

Reference numeral 8 denotes a CPU (central processing unit) that controls the entire system and performs calculation processing on various data according to a program connected to instructions input from the keyboard interface 4.

Reference numeral 9 denotes a system bus that connects the above-mentioned parts.

FIG. 2 schematically shows the relationship between the image data transfer means included in the CPU 8, the adaptive program, and the multi-window server program. It holds an image data storage section 11 that stores image data to be read out and data regarding a rectangular area within the image data storage section 11 to be displayed on a window, and according to instructions from the user,
The window setting unit 12 changes the size and position of the rectangular area displayed on the window, and in which area of the image data storage unit 11 the rectangular area containing the image data written to the image data storage unit 11 exists. The image data analysis unit 13 analyzes whether the image data is included in the rectangular area to be displayed in the window, and the rectangular area to be displayed in the window to the multi-window server program. The image data transfer unit 14 is configured to transfer image data. Note that the image data storage unit 11 has a main memory 7 (
One dot drawn from a continuous region in FIG. 3 and displayed on the window corresponds to one bit in the image data storage section 11.

FIG. 1 is an explanatory diagram showing the relationship between an image data storage unit and a window displayed by an adaptive program. FIG. 1(a) shows the storage area in the image data storage section and the size of the rectangular area written therein, and FIG. 1(b) shows the size of the display area of the window.

Next, the processing procedure of the image data transfer means 10 when only the image data of the rectangular area changed by the adaptive program is transferred to the window server program will be described with reference to FIGS. 1 and 2 described above. This will be explained based on the flowchart shown in FIG.

First, the adaptation program writes into the image data storage unit 11 image data that the user can understand when the processing results are displayed on the window.
The rectangular area (s r C4-X, S
r c-ySw t d t h.

height) data (step 101)
. The image data area analysis unit 13 analyzes the written area and the window display area (win←widthS
From the coordinates (wi nwxSw i n←y) in the image data storage unit 11 corresponding to the window coordinates (Olo),
The area that can be displayed in the window using the written image data is calculated and converted into coordinates in the window (step 102). Then, it is determined whether the image data is included within the rectangular area displayed in the window (step 103). Here, if all the image data is within a rectangular area, (SrC4-xSSrc
The image data is transferred from the image data (step 104).
).

On the other hand, in step 103, if part of the image data is not within the rectangular area corresponding to the window of the image data storage unit, the upper part of the image data is not within the area corresponding to the window. Please i1
(Step 105). Here, when the part in the upward direction is not within the area, s r c←y<-w t n4-y.

hefght<...-height-(win-ysr
c4-y)+1, and the value is adjusted so that only the image data in the area corresponding to the window of the image data storage unit 11 becomes the image data transfer destination (step 106).

If in step 105 the part that is not in the area corresponding to the window is not in the upward direction, it is determined whether the part is in the downward direction (step 1o7).

Here, if a part of the downward direction is not within the area, height<-height-((src”y+he
light) - (win”y+win”height)l
+1, and the value is adjusted so that only the image data in the area corresponding to the window of the image data storage unit 11 becomes the image data transfer destination (step 108).

If it is determined in step 107 that the portion that is not within the area corresponding to the window is not in the downward direction, it is determined whether the portion is in the left direction (step 1o9).

Here, if part of the left direction is not within the area, s　r　c←x　　-w　i　n4-x.

width＜・width-(win4-x-src”
x)+1, and the value is adjusted so that only the image data in the area corresponding to the window of the image data storage unit 11 becomes the image data transfer destination (step 110).

If in step 109 the portion that is not within the area corresponding to the window is not toward the left, it is determined whether the portion is toward the right (step 111).

Here, when the part in the right direction is not within the area, width<--・width-((s
r C4-X+width) -(win=x
+win6-wtdth))+1, and the value is adjusted so that only the image data in the area corresponding to the window of the image data storage unit 11 becomes the image data transfer destination (step 112). Furthermore, if in step 111 the portion that is not within the area corresponding to the window is not in the right direction, an error message is displayed (step 113).

When the above processing is completed, the image data transfer unit 14 transfers the rectangular area (src 4
-x, src 4-y S width, h
eight) is a rectangular area (srca) on the window.
-x-wi n+xSs rc←y-windy, wi
dthSheight), the image data transfer command and the image data in the rectangular area of the image data storage unit 11 are transferred to the multi-window server program (step 114).

Note that when the window setting unit 12 receives an instruction to change the shape (size, or area displayed in the window of the image data storage unit 11) of the window by the user's operation from the multi-window server program, it retains the instruction. data (Win4-x, Win4-y,
win4-wldth, win-heig
ht)).

In the above-mentioned embodiment, a case was explained in which the character A shown in FIG. It can also be data.

〔Effect of the invention〕

As explained above, in the computer system according to the present invention, only the image data of the area changed by the adaptive program is transferred to the window server program. Adaptive programs created for the system can be executed on a server-client multi-window system, making it possible to effectively utilize various adaptive programs.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the relationship between the image data storage unit and the window displayed by the adaptive program, and FIG. 2 is an explanatory diagram showing the relationship between the image data transfer means included in the CPU, the adaptive program, and the multi-window server program. FIG. 3 is a block diagram of the configuration of a workstation showing an embodiment of the computer system according to the present invention, and FIG. 4 shows how only the image data of the rectangular area changed by the adaptation program is sent to the window server program. 7 is a flowchart showing a processing procedure of an image data transfer means in the case of transfer. 10... Image data transfer means, 11... Image data storage section, 12... Window setting section, 13.
...Image data area analysis section, 14...Image data transfer section. Figure 2 Figure 2

Claims (1)

[Scope of Claim] In a computer system compatible with a server-client type multi-window system, there is provided an image data storage means for storing image data written and read by an adaptive program, and an image written in the image data storage means. a window setting means that holds data regarding a rectangular area containing data and changes the size and position of the rectangular area displayed on the window according to instructions from a user; and an image written in the image data storage means. an image data analysis means for analyzing in which area of the image data storage means a rectangular area containing the data exists, and for analyzing whether the image data is contained within the rectangular area displayed on the window; A computer system comprising: image data transfer means for transferring a rectangular area to be displayed on a multi-window server program;