JPH06187089A - Scroll control method - Google Patents

Abstract

PURPOSE:To provide a scroll operation in an optional direction by using the moving direction and moving amount of a pen input device. CONSTITUTION:This scroll control method is for scrolling pictures displayed on the display screen of a display device in a computer system provided with the pen input device and the display device. This method is provided with a step 1 for fetching the coordinates of the starting point and the terminating point of the movement of a pen for the scroll operation from the pen input device, the steps 2 and 3 for calculating the moving amounts in X axis and Y axis directions from the fetched coordinates of the starting point and the terminating point, the step 4 for calculating the inclination of the moving direction based on the calculated moving amounts in the X axis and Y axis directions and the step 5 for simultaneously executing scroll in the X axis direction and the Y axis direction based on the calculated moving amounts and the inclination of the moving direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll control method for scrolling using a pen input device in a computer system.

[0002]

2. Description of the Related Art Conventionally, in computer systems,
When performing document creation work and tabulation work while looking at the display screen of the display device, an image (text or text) whose size does not fit on the physical screen (physical screen) of the display area (entire display area or window) Image) may be treated as a logical screen. That is, the physical screen is the actual display screen, and the logical screen is the drawn scroll target screen. In such a case, the hidden part can be made visible by moving (scrolling) the logical screen with respect to the physical screen.

For example, conventional document creating application software has a scroll bar for vertical scrolling at the right end of the display area and a scroll bar for horizontal scrolling at the lower end, and pointing input like a mouse is applied to these. There is a device in which a logical screen can be moved horizontally or vertically by operating the device. Further, there is a device that automatically scrolls in the direction (vertical or horizontal) when the cursor is moved in a direction to extend outside the display area.

[0004]

However, in the conventional scroll control method, even when it is desired to move the logical screen diagonally, it is necessary to sequentially perform scrolling in the vertical and horizontal directions. It is necessary to first move the cursor of the pointing device to the right end of the display area for vertical scrolling, and then move the cursor to the lower end of the display area for horizontal scrolling. In some cases, these operations had to be repeated in order to show the target portion in the display area, and the operation was very complicated.

An object of the present invention is to use a pen input device to
An object of the present invention is to provide a scroll control method capable of scrolling an image in an arbitrary direction including an oblique direction by a single operation.

[0006]

To achieve the above object, a scroll control method according to the present invention scrolls an image displayed on a display screen of a display device in a computer system including a pen input device and a display device. In the scroll control method, a step of taking in coordinates of a starting point and an ending point of a movement of a pen for a scroll operation from the pen input device, and a moving amount in the X-axis and Y-axis directions from the taken coordinates of the starting point and the ending point A step of calculating, a step of calculating an inclination in the movement direction based on the calculated movement amounts in the X-axis and Y-axis directions, and an step of calculating X based on the calculated movement amount and the inclination in the movement direction.
And a step of simultaneously performing scrolling in the axial direction and the Y-axis direction.

[0007]

According to the scroll control of the present invention, the amount of movement in the X-axis and Y-axis directions and the inclination in the movement direction are obtained based on the coordinates of the start point and the end point of the pen movement for scroll input by the pen input device. Based on these, scrolling in both X-axis and Y-axis directions is simultaneously executed. That is,
With a single movement operation of the pen, it is possible to execute scrolling in any direction including an oblique direction. As a result, the complexity of the conventional scroll operation is eliminated, and the operability of the pen and the workability of processing are improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 12 shows a schematic hardware configuration of a computer system to which the scroll control method of the present invention is applied. This system includes a central processing unit (CPU) 120 that controls the entire system, a main storage device 12 that stores system programs and application programs executed by the CPU 120, and other various data.
1. A large-capacity external storage device for storing programs and data that are not resident in the main storage device 121, a pen 1.
Pen input device 123 having 24 and display device 12
Have 5. The pen input device 123 and the display device 125 are shown separately in the figure, but in the following description, it is assumed that the pen 124 is instructed and operated on the screen of the display device 125. However, the present invention is not limited to such a configuration.

As shown in FIG. 4, in this embodiment,
The image 128 is scrolled by moving (dragging) the pen tip within the operation area 128 while pressing the button 126 of the pen 124. There are two types of scroll operation modes shown in FIG. 2 and FIG. 3, which show the relationship between the moving direction of the pen 124 and the moving direction of the image 128 in the scroll operation.

FIG. 2 is a conceptual diagram showing a forward scroll operation mode. In forward scrolling, the logical screen (image) is moved as the pen moves. Therefore, in the forward scroll, the moving direction of the pen and the scroll direction match.

FIG. 3 is a conceptual diagram showing a scroll operation mode in the reverse direction. In the backward scroll, the physical screen, that is, the display area (window) itself is moved in accordance with the movement of the pen to perform the scroll. Therefore, in the reverse scroll, the scroll direction is opposite to the moving direction of the pen. As will be described later with reference to FIG. 8, in this embodiment,
By setting either the "forward" or "reverse" flag in the work area Mode, the user can select the scroll operation mode according to his or her preference.

FIG. 1 is a flowchart showing the scroll main process. This program is part of a system program or application program
It is stored in the main storage device 121 and executed by the CPU 120. Further, in the main storage device 121, various work areas used in the scroll processing are secured as shown in the memory map of FIG.

In a computer system adopting the scroll control method according to the present invention, when a scroll processing request is made, the X coordinate of the start point, the Y coordinate and the X coordinate of the end point of the movement by dragging the pen input device in step 1 of FIG. , Y-coordinates are obtained, and they are respectively set to the work area S
It is stored in startX, StartY, EndX, EndY. Next, in step 2, the movement amount in the X-axis direction is calculated from the work areas StartX and EndX and stored in the work area X. Next, in step 3, the work area S
The amount of movement in the Y-axis direction is calculated from startY and EndY and stored in the work area Y. In the following step 4, the inclination in the moving direction is calculated based on the work areas X and Y,
This is stored in work area A. Finally, in step 5, actual scroll processing is performed.

Here, the scrolling process is carried out collectively for the starting point and the ending point of the dragging of the pen, but the starting point and the ending point of the movement of the pen during the period are successively described above for each minute unit time during the dragging. If the process is repeated, it is possible to perform scrolling that follows the movement of the drag in real time.

FIG. 5 shows the internal processing of the scroll processing shown in step 5 of FIG. First, in step 51, the scroll direction is determined from the contents of the work area Mode set in advance. If the scroll direction is the backward scroll, the process branches to step 52, and if it is the forward scroll, the process branches to step 53. In step 52, the moving amounts in the X-axis direction and the Y-axis direction are respectively multiplied by "-1" to reverse the moving direction. In step 53, the absolute value of the X-axis direction movement amount and the absolute value of the Y-axis direction movement amount are compared to determine which axis is the short axis. If the absolute value of the amount of movement in the X-axis direction is larger, that is, if the short axis is the Y-axis, the process branches to step 55 to perform the Y-X scroll processing. Performs scroll processing.

FIG. 6 shows the X- step shown in step 54 of FIG.
It is a flow chart of the internal processing of Y scroll processing.
First, in step 541, one dot is scrolled in the X-axis direction. Next, at step 542, the number of dots (A) stored in the work area A is scrolled in the Y-axis direction. Next, in step 543, it is determined whether the scroll is completed. If the scroll is not completed, the process branches to step 541, and if completed, the XY scroll process is ended.

FIG. 7 shows Y- shown in step 55 of FIG.
It is a flow chart of the internal processing of X scroll processing.
First, in step 551, one dot is scrolled in the Y-axis direction. Next, in step 552, scrolling is performed in the X-axis direction by the number of dots determined by the reciprocal number (1 / A) of the numerical value stored in the work area A. Next, in step 553, it is determined whether the scroll is completed. If the scroll is not completed, the process branches to step 551, and if completed, the YX scroll processing is ended.

FIG. 8 is a flowchart showing the mode changing process. This process is executed at an arbitrary time when the scroll operation mode is desired to be changed, and is not executed at the time when the actual scroll processing request is generated. First, in step 1001, work area M
Determine the current mode stored in node. If the current mode is forward scrolling Step 100
Step 2 if branching to 2 and scrolling backward
Branch to 03. Next, in step 1002, a flag indicating backward scroll is set in the work area Mode, and in step 1003 a flag indicating forward scroll is set in the work area Mode.

Another embodiment of the present invention will be described with reference to FIG. First, point A and point B are specified while pressing the pen button to indicate the scroll direction. In this case, it is not necessary to attach the pen tip to the screen while moving from point A to point B. Next, the scroll amount is specified by writing a number. In order to facilitate the numerical value recognition, the area in which the numerical value is written may be set as, for example, a blank area near the point B on the opposite side of the point A, and the approximate size of the numerical value may be set.

FIG. 11 shows a scroll main process when the scroll instruction method of FIG. 10 is used. First, in step 11, the X coordinate and Y coordinate of the starting point of the movement of the pen and the X coordinate and Y coordinate of the ending point are obtained, and the work area St is obtained.
It is stored in artX, StartY, EndX, EndY. Next, in step 12, the inclination in the scroll direction is calculated from these work areas and stored in work area A. In step 13, the movement amount written by the pen is recognized and stored in the work area Z (not shown). In step 14, the movement amount in the X-axis direction is calculated from the movement amount Z and the work area A, and this is stored in the work area X. Next, in step 15, the movement amount Z and the work area A
Calculate the amount of movement in the Y-axis direction from
To store. Finally, in step 16, scroll processing is performed. This scroll processing may be the same as that shown in FIG.

As is clear from the above description, according to the present embodiment, the image can be scrolled in any direction by the operation of moving the pen. Also, the scroll operation mode can be selected according to the preference of the user.

[0023]

According to the present embodiment, in a computer system using a pen input device, an image can be scrolled in any direction including an oblique direction by one movement operation of the pen.

[Brief description of drawings]

FIG. 1 is a flowchart of a scroll main process.

FIG. 2 is a conceptual diagram of a forward scroll operation.

FIG. 3 is a conceptual diagram of a backward scroll operation.

FIG. 4 is a conceptual diagram of a scroll operation.

FIG. 5 is a flowchart of scroll processing.

FIG. 6 is a flowchart of XY scroll processing.

FIG. 7 is a flowchart of YX scroll processing.

FIG. 8 is a flowchart of mode change processing.

FIG. 9 is a configuration diagram of a memory map.

FIG. 10 is an explanatory diagram of another embodiment of the present invention.

11 is a flowchart of scroll main processing corresponding to the embodiment of FIG.

FIG. 12 is a block diagram showing a schematic hardware configuration of a computer system to which the present invention is applied.

[Explanation of symbols]

5 ... Scroll processing, 54 ... XY scroll processing, 5
5 ... YX scroll processing, 120 ... CPU, 121 ...
Main storage device, 122 ... External storage device, 123 ... Pen input device, 124 ... Pen, 125 ... Display device, 126 ... Button.

Claims (4)

[Claims] 1. A scroll control method for scrolling an image displayed on a display screen of a display device in a computer system including a pen input device and a display device, comprising: The step of capturing the coordinates of the start point and the end point of the movement, the step of calculating the movement amount in the X-axis and Y-axis directions from the captured coordinates of the start point and the end point, and the step of calculating the calculated movement amount in the X-axis and Y-axis directions A scroll comprising: a step of calculating a tilt in a moving direction based on the moving amount; and a step of simultaneously performing scrolling in the X-axis direction and the Y-axis direction based on the calculated moving amount and tilt in the moving direction. Control method. 2. In the step of performing the scroll,
2. The scroll control method according to claim 1, wherein each time the image is moved by one dot in the short axis direction of the inclination of the movement direction, the number of dots corresponding to the inclination is moved in the long axis direction. 3. Instead of the step of calculating the movement amount,
2. The scroll control method according to claim 1, further comprising a step of writing a moving amount by a numerical value with the pen and a step of recognizing the numerical value. 4. The scroll control method according to claim 1, further comprising the step of designating the relationship between the moving direction of the pen and the moving direction of the image as a forward relationship or an inverse relationship.