JPH04342020A - Display screen high-speed scrolling system - Google Patents

Abstract

PURPOSE:To attain the high speed of display screen scrolling by scrolling partially only a part of a screen displayed on a display, and displaying the rest of the screen at the time of the finish of the partial scrolling in respect of a display screen high-speed scrolling system to scroll a character string, etc., of the display screen at high speed. CONSTITUTION:The above system is constituted as follows. An operating environment table 5 in which a scrolling range on the display screen where the screen is scrolled partially is set beforehand and a scroll processing part 4 to scroll partially only the scrolling range set in the operating environment table 5 are provided, and in response to a scrolling instruction, the scroll processing part 4 scrolls partially only the scrolling range set in the operating environment table 5 to an instructed direction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed screen scrolling method for rapidly scrolling character strings on a screen.

0002

2. Description of the Related Art A full screen editor as a program creation tool is required to scroll a program displayed on a screen at high speed. Traditionally, OS
PM and W are becoming standardized on /2 and MS/DOS.
When creating a program using an editor running on Windows, the entire program displayed on the display is scrolled and characters are drawn.

0003

[Problems to be Solved by the Invention] When attempting to scroll the entire string displayed on the display using the conventional editor described above, the screen drawing of the string is slow, and the screen must be quickly scrolled to display the desired string. There was a problem that it could not be displayed. The present invention partially scrolls only a part of the screen displayed on the display,
The purpose is to draw the remaining screen at the end of scrolling to speed up screen scrolling.

0004

[Means for Solving the Problems] Means for solving the problems will be explained with reference to FIG. In FIG. 1, the scroll processing unit 4 partially scrolls only the scroll range set in the operating environment table 5, or draws the remaining portion outside the scroll range after the partial scroll is completed.

[0005] The operating environment table 5 is a table in which a scrolling range for partially scrolling on the screen is set in advance.

[0006]

[Operation] As shown in FIG. 1, in the present invention, in response to a scroll instruction, the scroll processing unit 4
Only a preset scroll range is partially scrolled in the designated direction. Further, the scroll processing unit 4 partially scrolls only the scroll range set in the operating environment table 5 in the designated direction, and after the partial scroll ends, draws the remaining part outside the scroll range.

Therefore, it is possible to speed up screen scrolling by partially scrolling only the screen within the scroll range of the screen displayed on the display and drawing the remaining screen when the partial scroll ends. Become.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the structure and operation of an embodiment of the present invention will be explained in detail using FIGS. 1 to 4. In FIG. 1, a keyboard 1 is used to perform various inputs, and here includes a shift key, a cursor movement key, and the like.

[0009] The input/output control program 2 performs various input/output operations, and here it passes presses of shift keys and cursor movement keys from the keyboard 1 to the editor 3,
Display 7 partial scroll results from editor 3
It can be transferred to and displayed on the computer. The editor 3 displays character strings (for example, source programs) on the display 7 and performs various editing operations, and here includes a scroll processing section 4, an operating environment table 5, and the like.

The scroll processing section 4 scrolls a portion of the character string displayed on the display 7 (partial scroll), and draws the remaining portion when the partial scroll is completed. The operating environment table 5 is a table in which a scroll range for partial scrolling on the screen is set in advance, and is specified by, for example, 30% of the width of the screen displayed on the display 7, or the number of digits. Alternatively, only a portion corresponding to the number of lines within a certain range in the row direction may be scrolled in the horizontal direction.

The memory 6 is a memory for developing and drawing character strings and the like to be displayed on the display 7. The display 7 is a display device such as a CRT that displays a screen. Next, according to the order shown in the flowchart of FIG.
The operation of the configuration will be explained in detail.

In FIG. 2, S1 determines the scroll range using the operating environment table 5. This means, for example, that the scroll range for partial scrolling in the operating environment table 5 can be set in advance as the number of digits or the screen width (for example, 60%), as shown in the diagonally shaded area in Figure 3 (a). , the scroll processing unit 4 reads and determines the scroll range.

[0013] In S2, it is determined whether or not a cursor movement key has been pressed. In S3, it is determined whether or not the SHIFT key has been pressed. These steps S2 and S3 determine whether or not the user has pressed the cursor movement key while pressing the shift key on the keyboard 1 of FIG. 1 to instruct partial scrolling in this embodiment.
If both of S4 and S3 are YES, partial scrolling of this embodiment from S4 onwards is performed. On the other hand, in the case of NO in S2,
Since the cursor movement key is not pressed, other processing corresponding to the pressed key is performed. Also, YES in S2, N in S3
In the case of O, normal cursor movement processing is performed.

[0014] In step S4, according to the instruction of the cursor movement key,
The screen is partially scrolled only within the scroll range specified in S1. This moves the cursor in the movement direction specified by the cursor movement key (for example, moving the cursor downwards on the screen in the case of FIG.
In the case of (a), approximately 60% of the left scroll range)
Scroll (scroll two lines downward in the case of (a) in FIG. 3) is performed.

In step S5, text (in the case of (a) in FIG. 3, the character string of the source program) is drawn and displayed in the drawing rectangular area necessitated by the screen scrolling. S6 is S
It is determined whether the HIFT key is released. This determines whether or not the partial scrolling instruction in this embodiment has been completed, and if YES, the remaining rectangle that was not scrolled in S7 (the part marked ■ on the right side of (b) in FIG. 3) is If the answer is NO, S4 and subsequent steps are repeated.

Through the above processing, when the user presses the cursor movement key while holding down the shift key, the scroll range preset in the operating environment table 5 (Fig.
(In the case of (a), about 60% of the width on the left side), repeat partial scrolling and drawing the string in this area by the number of lines specified in the direction specified by the cursor movement key. . Then, in response to releasing the shift key, a series of partial scrolls is completed by drawing in the remaining area that has not been partially scrolled. As a result, only a preset scroll range on the screen is partially scrolled, making it possible to scroll at high speed.

Next, a specific example will be explained in detail using FIGS. 3 and 4. FIG. 3 shows a partial scroll explanatory diagram (Part 1) of the present invention. This is a specific example of partially scrolling downward by two lines in the scroll range (1) in (a) of FIG. (A) in FIG. 3 shows the state before performing partial scrolling. Here, in the operating environment table 5, ■Scroll range (approximately 6 from the left in screen width)
0%) is specified. ■ indicates the width of the screen in the row direction. Here, 00010 of the source program
Twelve lines of text from line 0 to line 001200 are displayed as TEXT.

FIG. 3(b) shows the state of FIG. 3(a),
The state after partial scrolling is shown by pressing the down scroll key twice while holding down the shift key. This occurs in response to (1) the user pressing the down scroll key twice while holding down the shift key in the state (a) of Figure 3, and (2) the operating environment. Regarding the scroll range of ■ in (a) of Figure 3 extracted from Table 5, partially scroll down two lines and select this
The area surrounded by and ■ should be set as shown in the diagonally shaded area in (b) of FIG. (3) Then, when the user releases the shift key, the remaining portions of the partial scroll (■ and ■) in (b) of Figure 3
Draw the part enclosed by . These (1), (2), (3)
By the processing, it is possible to perform partial scrolling at high speed only in the specified scroll range.

FIG. 4 is a partial scroll explanatory diagram of the present invention (
Part 2) is shown. This shows a specific example of partial scrolling two lines down and two digits to the left in the state of (a) in FIG. (A) in FIG. 4 shows the state before starting partial scrolling. (B) in FIG. 4 shows the state after partial scrolling and drawing by two lines downwards in the scroll range (■). This is done by pressing SHIFT +
In response to pressing the cursor key (↓) (twice), that is, the shift key, and pressing the cursor movement key (↓) twice in succession, the scroll range of ■ is shown in Figure 4.
As shown in FIG. 4A to FIG.

FIG. 4C shows a state after partial scrolling and drawing by two digits to the right in the state shown in FIG. 4B. As described on the right, this is the state after holding down the SHIFT key, releasing the cursor movement key (↓), and pressing the cursor movement key (→) (twice), that is, 2 digits to the right. (2 characters), shows the state after partial scrolling. In this case, it is set in advance that the line number area is not subject to partial scrolling, but the digit number area is subject to partial scrolling.

FIG. 4(d) shows the state after the shift key is released in the state of FIG. 4(c) and the remaining portion of the partial scroll is drawn. This means that S
When the HIFT key is released, a drawing is made of the right part (■) that was not partially scrolled. As mentioned above,
While holding down the shift key, press the cursor movement key to repeatedly partially scroll and draw the preset scroll range of ■, then release the shift key to complete scrolling by drawing the part of ■ that was not partially scrolled. By doing so, it is only necessary to partially scroll only the necessary portions, and it is possible to perform high-speed scrolling by issuing a PM or Windows scroll function to partially scroll.

[0022]

[Effects of the Invention] As explained above, according to the present invention,
The system is configured to partially scroll only the scrolling range of the screen displayed on the display, and draw the remaining screen when scrolling ends, so the screen can be scrolled at high speed. For example, if you compare partial scrolling of a scroll range of 1/3 of the width of the screen with conventional scrolling of the entire screen (scrolling in units of 5 lines by scrolling up and down), you can reduce the time by about 30% and scroll the screen at high speed. It became possible to do this.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of one embodiment of the present invention.

FIG. 2 is a flowchart explaining the operation of the present invention.

FIG. 3 is a partial scroll explanatory diagram (Part 1) of the present invention.

FIG. 4 is a partial scroll explanatory diagram (part 2) of the present invention.

[Explanation of symbols]

1: Keyboard 2: Input/output control program 3: Editor 4: Scroll processing unit 5: Operating environment table 6: Memory 7: Display ■: Scroll range ■, ■: Remaining part that does not scroll

Claims (2)

[Claims] [Claim 1] In a screen high-speed scrolling method that scrolls character strings on the screen at high speed, an operating environment table (5) that presets a scroll range for partially scrolling on the screen, and settings in this operating environment table (5) are provided. a scroll processing unit (4) that partially scrolls only the scroll range that has been scrolled, and in response to a scroll instruction, the scroll processing unit (4)
) A high-speed screen scrolling method is characterized in that only a scroll range set in () is partially scrolled in a designated direction. 2. In response to the scroll instruction, the scroll processing unit (4) partially scrolls only the scroll range set in the operating environment table (5) in the instructed direction, and corresponds to the end of the scroll instruction. 2. The high-speed screen scrolling method according to claim 1, wherein the remaining portion outside the scroll range is drawn.