JP2008027003A - Display control system, scroll display method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily display a desired section by performing page display without using any scroll box in the first operation in displaying a document or an image which is too large to be in one picture, and afterwards, scrolling it with a scroll box or an arrow button as necessary. <P>SOLUTION: A page number dialog control part 26 designates the page number of a display page, and a page display tool bar control part 24 calculates the value of a vertical scroll box position from the page number, and moves the vertical scroll box to the position to perform page display. Also, the page display tool bar control part 24 calculates the value of the vertical scroll box position from the vertical position information of a page image designated by a page list dialog control part 25, and moves the vertical scroll box to the calculated position to perform page display. Afterwards, the page display tool bar control part 24 performs scroll display according to the operation of a scroll box or an arrow button. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a scroll display technique in an information processing apparatus such as a personal computer or an electronic whiteboard, and more particularly to control of a scroll box display position on a scroll bar.

In an information processing apparatus such as a personal computer, when displaying the contents of a document composed of a plurality of pages, the contents are displayed while scrolling in the vertical direction, for example. For example, a scroll bar extending in the vertical direction is displayed at the right end of the screen, and a scroll box is displayed in the scroll bar. The position of the scroll box in the scroll bar indicates the position of the display page in the entire document. For example, if the scroll box is at the top of the scroll bar, the beginning of the first page of the document is displayed, and the scroll box is the scroll bar. When it is at the lower end of, the last part of the last page of the document is displayed. Also, the user can move the scroll box by dragging the scroll box along the scroll bar with a mouse or the like, and display a page corresponding to the position of the scroll box. A page number indicating the display page is displayed at a predetermined position on the screen.
However, in the prior art, when a desired portion is displayed by dragging and moving the scroll box, there is a problem in that it cannot be easily aligned because it goes too far or goes back.
For this reason, several techniques for solving such problems have been proposed.

For example, the prior art disclosed in Patent Document 1 has a scroll bar and a scroll box (scroll knob) as described above, and a mark indicating a position corresponding to a predetermined content displayed in the window on the scroll bar. have. A plurality of such marks can be set, names can be assigned to the respective marks, and the scroll box can be positioned at a desired mark by designating such marks with a mouse or the like.
In the prior art disclosed in Patent Document 2, a plurality of tags are attached in a scroll bar, an article type included in contents displayed on each tag is assigned, and a desired article is selected by selecting a tag. Display the page.
In the prior art disclosed in Patent Document 3, only image data in a document created by HTML is extracted, the image data is associated with page information and position information, and a reduced list of the image is displayed. The selected image data is displayed on the screen based on link information such as page information and position information.
JP 2000-172401 A JP 2001-34383 A JP 2000-90035 JP

However, the conventional techniques disclosed in Patent Document 1 and Patent Document 2 have a problem that they lack general versatility. Further, none of the conventional techniques is applicable to documents created and displayed by other application programs.
The present invention is intended to solve such a problem of the prior art. Specifically, a scroll box is used in the first operation for a document or image created and displayed by an arbitrary application program. The purpose is to provide a page display technology that can easily display a desired part by performing page output without scrolling and then scrolling using a scroll box or an arrow button in a scroll bar as necessary. And

In order to solve the above problem, a display control system according to claim 1 is a display control system that scrolls and displays the contents of an image or document that does not fit in one screen by moving a scroll box. A display control system for displaying a part of the page according to the display position of the vertical scroll box, and a page number designating unit for designating the page number of the page to be displayed, and the page number designated by the page number designating unit Display position calculating means for calculating the value of the display position of the vertical scroll box, and scroll box position control means for moving the vertical scroll box to the display position of the value calculated by the display position calculating means.
A display control system according to a second aspect is the display control system according to the first aspect, wherein the display of the image or document is performed by an arbitrary application program.

The display control system according to claim 3, wherein a scroll box is moved to extract the contents of an image or document that does not fit in one screen, and is extracted from an image or document displayed by an arbitrary application program. An image data storage unit that stores vertical position information of each page image in association with the image data of the plurality of page images, and a page image designated from the image data stored by the image data storage unit is displayed. Display position calculation means for calculating the value of the display position of the vertical scroll box from the vertical position information of the page image specified at the time, and the display position calculation means when displaying the image or document displayed by the arbitrary application program The vertical position at the display position calculated by And a scroll box position control means for moving the over mailbox.
A display control system according to a fourth aspect of the present invention is the display control system according to the third aspect, wherein a list of page images reduced to allow a page image to be designated from among the image data stored by the image data storage means is displayed. A list display means for enabling the display.

The display control system according to claim 5 is the display control system according to any one of claims 1 to 4, wherein window information acquisition means for periodically acquiring window information of a window being displayed, and the window information A page total number input control unit that displays an input dialog when the window information indicating the vertical scroll box in which the page display control information is not registered is acquired from the acquisition unit, and inputs the total number of pages of the image or document.
7. The method according to claim 6, wherein a scroll display method for scrolling and displaying the contents of an image or document that does not fit on one screen by moving the scroll box is a vertical scroll box displaying a part of the image or document. When displaying according to the display position, the page number of the page to be displayed is designated, the value of the display position of the vertical scroll box is calculated from the page number, and the vertical scroll box is moved to the display position of the calculated value. .

According to a seventh aspect of the present invention, in the scroll display method according to the sixth aspect, the image or document is displayed by an arbitrary application program.
The method according to claim 8 is a scroll display method for scrolling and displaying the contents of an image or document that does not fit in one screen by moving a scroll box, and a plurality of images or documents extracted by an arbitrary application program are extracted. The vertical position information of each page image is stored in association with the image data of the page image, and when the image or document displayed by the arbitrary application program is displayed, the vertical position of the specified page image is displayed. A value of the display position of the vertical scroll box is calculated from the information, and the vertical scroll box is moved to the calculated display position.

According to a ninth aspect of the present invention, in the scroll display method according to the eighth aspect, a list of page images reduced for specifying a page image from the stored image data is displayed.
The method according to claim 10 is the scroll display method according to claim 8 or 9, wherein the horizontal position information of the page image is stored in association with the image data of the plurality of page images, and is designated. When displaying the page image, the display position of the vertical scroll box is calculated from the vertical position information of the specified page image, and the display position of the horizontal scroll box is calculated from the horizontal position information, and the vertical scroll box and horizontal scroll box are calculated at the calculated display position. It is set as the structure which moves.

The method according to claim 11 is the scroll display method according to claim 8, 9 or 10, wherein the image data of the page image is stored with the image displayed in the window that is in contact with the vertical scroll bar as the page image. To do.
According to a twelfth aspect of the present invention, in the scroll display method according to the eighth, ninth, or tenth aspect, when the registered vertical scroll bar is closed, the stored page image data is automatically deleted.
The method according to claim 13 is the scroll display method according to any one of claims 6 to 10, wherein the window information of the window being displayed is periodically acquired, and the page display control information is not registered. When window information indicating a vertical scroll box is acquired, a page total number input dialog is automatically displayed, and the total number of pages of the image or document is input.

According to a fourteenth aspect of the present invention, in the scroll display method according to any one of the sixth to tenth aspects, a page number is further displayed.
The method according to claim 15 is the scroll display method according to any one of claims 6 to 10, wherein when the vertical scroll box is displayed, the display position of the vertical scroll box and the vertical scroll length are periodically detected. When there is a change, a page number corresponding to the display position is calculated, and the page number is displayed.
A program according to a sixteenth aspect is a program executed on an operating system and programmed to execute scroll display by the scroll display method according to any one of the sixth to fifteenth aspects.
A recording medium according to claim 17 is a computer-readable recording medium on which the program according to claim 16 is recorded.

  According to the present invention, for a document or image created / displayed by an arbitrary application program, in the first operation, the page number of the page to be displayed is designated, and the value of the display position of the vertical scroll box is determined from the page number. Page can be calculated by moving the vertical scroll box to the display position of the calculated value, and then scrolled using the scroll box and arrow buttons in the scroll bar as needed. Can display a desired portion.

  In addition, for a document or image created and displayed by an arbitrary application program, the vertical position information of each page image is associated with image data of one or a plurality of images or a plurality of page images extracted from the document. When saving and displaying an image or document, the first operation calculates the value of the vertical scroll box display position from the vertical position information of the specified page image, and moves the vertical scroll box to the calculated display position. Thus, the page can be displayed, and thereafter, scrolling can be performed using a scroll box or an arrow button in the scroll bar as necessary, so that a desired portion can be easily displayed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the components, types, combinations, shapes, relative positions, and the like described in this embodiment are not merely intended to limit the scope of this description unless otherwise specified, but are merely illustrative examples. .
FIG. 1 is an external view of a tablet PC (tablet personal computer) showing an embodiment of the present invention. As shown in the figure, the tablet PC includes an electronic pen 1 and a touch panel display 2, and instead of an existing PC based on keyboard and mouse operations, the electronic pen 1 and touch panel display 2 use a mouse pointing function and keyboard text input. Realize the function. About text input, after inputting a handwritten character with the electronic pen 1 and the touch-panel display 2, character recognition is performed and it is set as the coded text. Note that “Windows (registered trademark) XP Tablet PC Edition”, which is an OS for tablet PCs, is provided by a software manufacturer, and handwritten character recognition can be realized using this OS.

FIG. 1A shows a state in which a tablet PC is opened, and includes a liquid crystal display 3 and a PC main body 4 including a keyboard as shown in the figure.
FIG. 1B shows a state in which the tablet PC is folded. Tempered glass 5 is provided on the surface with which the electronic pen 1 is in direct contact to prevent the liquid crystal display from being damaged. An electromagnetic induction sensor unit 6 for detecting the position of the electronic pen 1 is provided under the liquid crystal display with a structure that does not impair the image quality of the liquid crystal display. The electromagnetic induction sensor unit 6 detects the position (coordinates) of the electronic pen 1 on the liquid crystal display, and emulates a click operation and a drag operation when a control unit described later is a mouse. In addition, handwritten characters can be drawn as if writing characters on paper by using the horizontally placed liquid crystal display and the electronic pen 1.
In the above description, the liquid crystal display 3 is rotated and folded, but a type in which the liquid crystal display can be removed is also possible.

Next, coordinate input control will be described with reference to FIG.
First, the touch panel display 2 detects a coordinate indicator that touches the display surface, the coordinate calculation control device 8 provided in the vicinity of the touch panel display 2 calculates the coordinate data of the contact position (see FIG. 3A), The coordinate data is transmitted to the PC main body 4. This transmission is realized by communication means compliant with RS232C or USB. When the touch panel driver 11 in the PC main body 4 receives the coordinate data from the coordinate calculation control device 8, the coordinate data is converted into mouse data (FIG. 3) defined by the OS. (See (b)) and output to the mouse interface (I / F) 12 provided by the OS. Note that since the mouse data has the same format as the data output by the mouse connected to the PC, the application program may be the same as when the mouse is used.

  In this way, the application processing unit (CPU that operates according to each program operates according to the application program here) 13 to which the execution right is given by the OS receives mouse data from the mouse I / F 12. And the application process part 13 performs the function matched with the information (for example, menu and button) under mouse coordinates. Further, the image data to be displayed on the screen as an execution result is updated, and the image data conversion unit 14 converts the image data into an RGB signal and displays the image on the liquid crystal display.

Examples of the present invention will be described below.
First, screen display information that can be acquired by an interface provided by the OS is listed (see FIG. 4).
(1) As window information of the displayed window W, upper left window origin coordinates (WX, WY), window W width WW, window W height WH, window handle information, window class information, and window style information Can be acquired (see FIG. 4A). The window handle is an identifier of a window that is uniquely assigned to the currently displayed window (so that it can be distinguished from others). The application processing unit 13 acquires and sets window information using the window handle.
(2) The horizontal scroll bar HBR and the vertical scroll bar VBR can be identified from the window class when created as a window, and can be identified from the window style when attached to a window.
(3) The upper left origin coordinates (HX, HY), width HW, and height HH of the horizontal scroll bar HBR can be acquired (see FIG. 4B).
(4) The horizontal scroll length HL indicates the entire width including the non-display portion of the document or image on the screen (value is a dimension on the screen) and can be acquired by an I / F (interface) provided by the OS. .
(5) The display width HBW of the horizontal scroll box HBX and the position HP of the horizontal scroll box HBX can be acquired (see FIG. 4B). The display width HBW indicates the width of the display part in the document or image, and the box position HP indicates the position from the left end (left end of the document) of the scroll area indicated by the scroll length HL, and is acquired by the I / F provided by the OS. it can.
(6) The upper left origin coordinates (VX, VY), width VW, and height VH of the vertical scroll bar VBR can be acquired (see FIG. 4C).
(7) The vertical scroll length VL indicates the vertical length of the entire document or image (all pages) including the non-display portion (value is a dimension on the screen), and can be acquired by the I / F provided by the OS.
(8) The display length VBL of the vertical scroll box VBX and the position VP of the vertical scroll box VBX can be acquired. The display length VBL indicates the vertical length of the display portion of the document or image, and the box position VP indicates the position from the upper end of the scroll area indicated by the vertical scroll length VL, and can be acquired by the I / F provided by the OS.
(9) The window W on the left side of the vertical scroll bar VBR becomes a window controlled by the vertical scroll bar VBR. Further, “the upper left X coordinate WX of the window W + the window width WW = the vertical scroll bar X coordinate VX”.

In the scroll display control of this embodiment, in FIG. 5A, the size of the window W can be adjusted by a drag operation with a mouse (here, a touch panel), and the horizontal scroll box HBX can be adjusted depending on the size of the window W. The display width HBW, the horizontal scroll length HL, the display length VBL of the vertical scroll box VBX, and the vertical scroll length VL are also adjusted.
FIG. 5B shows a scroll display space when a document having a total page number of 3 is scroll-displayed. This display space is irrelevant to the size of the window W to be displayed. The horizontal scroll length HL, which is the length in the scroll bar, corresponds to the width of the scroll display space (represents the width), and the vertical scroll length. VL corresponds to the length (height) of the scroll display space (expresses the length). Similarly, HP and VP, which are lengths in the scroll bar, correspond to the length from the origin in the scroll display space to the origin of the display portion.

  Here, if the display is changed from the display state A (HP, HB, HL, VP, VB, VL) to the window size that becomes the display state B (HB0, HL0, VB0, VL0), the page in the display state A When the document (or image) content at the upper left origin of the display area is displayed at the upper left origin of the page display area in the display state B, the scroll box position on the display changes, but is acquired by the I / F provided by the OS. The horizontal scroll box position and the vertical scroll box position are the same value. The origin position of the display portion in the document or image does not change due to the change in the scroll box position.

Next, page number display will be described with reference to FIG.
In this embodiment, when the application processing unit 13 periodically acquires window information of a window being displayed and a vertical scroll bar VBR or vertical scroll box VBX in which no page display control information is registered is detected, The total number input dialog TPD is displayed and the total number of pages TP is input (see FIG. 6A).
Subsequently, the application processing unit 13 detects that the “page number” button (top button) in the page display toolbar TB is pressed, displays the page number input dialog PD, inputs the page number P, and performs vertical scrolling. The designated page is displayed by moving the box position HP to the position shown below.
Vertical scroll box position VP = (VL / TP) × (P−1)
Further, the position VP of the vertical scroll box VBX and the vertical scroll length are periodically monitored, and when there is a change, the page number is calculated as follows, and an instruction is given to the page display toolbar.
Page number P = TP (VP / VL) +1

Next, the position control of the scroll box in the case where partial display of a document including the page image is performed using the page image selected from the displayed page list will be described. First, a description will be given from the time of saving a page image with reference to FIG.
FIG. 7A shows a state in which one page image to be stored is displayed. In this state, when the user detects that the “save” button in the page display toolbar TB is pressed, the application processing unit 13 acquires the image data of the document read into the memory, and further, the window ( The upper left origin coordinates (X, Y), width WW, height WH, etc. of page display area W are acquired, and page image data corresponding to the page display area being displayed is extracted using these values (FIG. 7). (See (b)).
Subsequently, the application processing unit 13 acquires and stores horizontal scroll box position information and vertical scroll box position information. Then, the acquired scroll box position information is stored in a page image file in association with the image data. In this way, image data of a plurality of page images can be stored. The data structure of the saved information is shown in FIG.

In the subsequent document display, when the user presses the “list” button in the page display toolbar TB, the application processing unit 13 reduces a plurality of image data in the page image file to display a list (FIG. 8). (Refer to (a)), the user should select a page to be displayed from the page image list.
Subsequently, the horizontal scroll box position information of the selected page image is acquired from the information associated with the page image, and the horizontal scroll box HBX is moved to the same position. Further, the vertical scroll box position information of the selected page image is acquired from the information associated with the page image, and the vertical scroll box VBX is moved to the same position. As a result, the selected page of the opened document file is displayed (see FIG. 8B).

FIG. 9 is a detailed configuration diagram of the application control unit 13 that operates according to the page display control program. The page display control program is started by double-clicking the icon displayed on the first screen provided by the OS. And after starting, this display control system performs page display control of the document etc. which are displayed by the 1 or several application program provided in the market different from a page display control program.
The mouse input control unit 21 shown in FIG. 9 takes in mouse data input by a user's pen (having the same role as a mouse) operation, and executes a function assigned to the mouse coordinates.
The window monitoring control unit 22 periodically operates to acquire window information of a window being displayed by any one or a plurality of application programs, to display a page number, and to display page control information in a page display control table 23. Or set to The page display control table 23 is provided in a memory having two access interfaces.

The page display tool bar control unit 24 displays a page display tool bar, detects the press of each button in the page display tool bar, and executes the following corresponding function.
(1) The pressing of the “page number” button is detected to display a page number input dialog.
(2) When the “previous page” button is pressed, the display page is returned to the previous page.
(3) The pressing of the “back page” button is detected and the display page is advanced to the next page.
(4) The pressing of the “Save” button is detected and the saving control of each page image is executed.
(5) The pressing of the “list” button is detected to display a page image list.
(6) The operation of the page display control program is terminated by detecting the pressing of the “Finish” button.

The page list dialog control unit 25 reduces the page images stored in the page image file to display a list, and displays the selected page image. Further, the page number dialog control unit 26 displays a page number input dialog and inputs a page number.
The page image storage control unit 27 acquires the image data of the displayed page image, page image horizontal position information, and page image vertical position information and stores them in the page image file. The page total number input control unit 28 displays a page total number input dialog and inputs the total number of pages.
In this embodiment, the window information acquisition unit is realized by the window monitoring control unit 22, and the display position calculation unit is realized by the page display toolbar control unit 24, the page list dialog control unit 25, and the page image storage control unit 27. The scroll box position control means is realized by the page display toolbar control section 24 and the page list dialog control section 25, the page number specifying means is realized by the page number dialog control section 26, and the image data storage means is realized by the page image storage control section 27. The page total number input control means is realized by the page total number input control unit 28.

FIG. 10 is an operation flowchart of mouse input control by the mouse input control unit 21. Hereinafter, an operation flow of mouse input control will be described with reference to FIG.
The mouse input control unit 21 first displays a page display toolbar (see FIG. 6 and the like) (step 1). Then, the page display control table 23 (see FIG. 10) is cleared (0 is written) (step 2). Further, the window monitoring control unit 22 is activated as one task (thread) (step 3).
Subsequently, the mouse input control unit 21 waits for input of mouse data (N in Step 4 → Step 4). When the mouse data is acquired (Y in Step 4), the mouse data is the coordinates of the page display toolbar area. If the operation is a page display toolbar operation (Y in step 5), the page display toolbar control unit 24 is caused to execute page display toolbar control (step 6). If the mouse data is a coordinate in the page number dialog area (Y in step 7), that is, if it is a page number dialog operation, the page number dialog control unit 26 is caused to execute page number dialog control (step 8). If the coordinates are within the page list dialog area (Y in step 9), that is, if the page list dialog operation is performed, the page list dialog control unit 25 is caused to execute page list dialog control (step 10).

Next, the page display toolbar control of the page display toolbar control unit 24 will be described with reference to FIG.
First, the page display toolbar control unit 24 determines whether or not the mouse data indicates a mouse button ON (pen down) state (step 11). If the mouse button is in the ON state (Y in step 11), the selection button at the mouse coordinates is selected and displayed (step 12), and the operation flow is exited. For simplification, it is assumed that the same button coordinates are input from ON to OFF.

On the other hand, if the mouse data is in the mouse button OFF (pen-up) state (N in step 11), the page display toolbar control unit 24 returns the selection button from the selection display state to the normal display state (step 13), and the mouse. It is determined whether or not the button at the coordinates is a “page number” button (step 14). If it is the “page number” button (Y in step 14), the page number input dialog PD is displayed (step 15), and the operation flow is exited.
On the other hand, if the button at the mouse coordinates is not the “page number” button (N in step 14), the page display toolbar control unit 24 determines whether or not the button at the mouse coordinates is the “previous page” button ( Step 16). If it is the “previous page” button (Y in step 16), if the current page number is greater than 1 (Y in step 17), the previous page is displayed with the page number decreased by 1 (step 18). ), Page display control to be described later is executed (step 19).

If the button at the mouse coordinates is not the “previous page” button (N at step 16), the page display toolbar control unit 24 determines whether the button at the mouse coordinates is the “back page” button (step 20). ). If it is a “back page” button (Y in step 20), if the current page number is smaller than the total number of pages (Y in step 21), the page number is incremented by 1 and the next page is displayed (step) 22) The page display control described later is executed (step 23).
In the above description, if the button at the mouse coordinates is not the “back page” button (N at step 20), the page display toolbar control unit 24 determines whether the button at the mouse coordinates is the “save” button (step 24). ). If it is the “save” button (Y in step 24), the page image storage control unit 27 is executed to perform page image storage control, which will be described later, and the page information is stored (step 25).
In the above description, if the button at the mouse coordinates is not the “save” button (N in step 24), the page display toolbar control unit 24 determines whether the button at the mouse coordinates is the “list” button (step 26). . If the button is a “list” button (Y in step 26), a page list dialog is displayed to cause the page list dialog control unit 25 to execute page list dialog control described later (step 27).

On the other hand, if the button at the mouse coordinates is not the “list” button (N in step 26), the page display toolbar control unit 24 determines whether the button at the mouse coordinates is an “end” button (step 28). If it is an “END” button (Y in step 28), the opened page image file is closed (step 29).
Subsequently, the page display toolbar control unit 24 notifies the window monitoring control unit 22 of the end (step 30). Then, the page display toolbar TB is deleted (step 31), and the page display control is terminated.

Next, an operation flow of page number dialog control performed by the page number dialog control unit 26 will be described with reference to FIG.
First, the page number dialog control unit 26 determines whether or not the mouse data indicates a mouse button ON (pen down) state (step 41). If the mouse button is in the ON state (Y in step 41), the selection button in the page number input dialog PD at the mouse coordinates is set to the selected display state (step 42), and the operation flow is exited. For simplification, it is assumed that the same button coordinates are input from ON to OFF.

On the other hand, if the mouse data is in the mouse button OFF (pen-up) state (N in step 41), the page number dialog control unit 26 returns the selection button from the selection display state to the normal display state (step 43), and the mouse. It is determined whether or not the button at the coordinates is a “number” button (step 44). If it is a “number” button (Y in step 44), the number at the mouse button position is stored in the page number data table (see FIG. 12) in the work memory (step 45). Note that 0 is written in the input digit number area in the page number data table.
Subsequently, the page number dialog control unit 26 increases the value of the number of digits in the page number data table by 1 (step 46), and further, the input number stored and input in the page number data table at that time is input to the page number input dialog PD. Is displayed at the first place (right end) as the numerical value of the corresponding digit of the page number P (step 47) ("123" is displayed when input in the order of 1, 2, 3).

On the other hand, if the button at the mouse coordinates is not a “number” button (N in step 44), it is determined whether or not the button at the mouse coordinates is a “DEL (delete)” button (step 48). If it is a “DEL” button (Y in step 48), it is determined whether or not the number of input digits is greater than 0, that is, whether or not at least one digit has been input (step 49). If this is the case (Y in step 49), the number input immediately before is deleted, the number of input digits in the page number table is reduced by 1 (step 50), and the number of digits after deletion is displayed (however, 0 If it is a digit, it is not displayed) (step 51).
On the other hand, if the button at the mouse coordinates is not the “DEL” button (N in step 48), it is determined whether or not the button at the mouse coordinates is the “cancel” button (step 52). If it is a “cancel” button (Y in step 52), the page number dialog is cleared from the screen (step 53). If the button at the mouse coordinates is not a “cancel” button (N in step 52), it is determined whether or not the button at the mouse coordinates is an “OK” button (step 54). If it is an “OK” button (Y in step 54), the page number dialog is cleared from the screen (step 55), and page display control for displaying the page image of the input page number is executed (step 56). .

Next, an operation flow of page list dialog control performed by the page list dialog control unit 25 will be described with reference to FIG.
First, the page list dialog control unit 25 determines whether or not the mouse data indicates a mouse button ON (pen down) state (step 61). If the mouse button is on (Y in step 61), it is determined whether or not the mouse coordinates are within the vertical scroll box VBX on the page list screen (see FIG. 8A) (step 62). If it is within (Y in step 62), the displayed page list image is scrolled and displayed according to the input mouse coordinates (step 63). Further, the display position of the vertical scroll box VBX is moved according to the input mouse coordinates (step 64).
On the other hand, if the mouse coordinates are not in the vertical scroll box VBX (N in step 62), the page list dialog control unit 25 determines whether or not the mouse coordinates are in any of the page images displayed as a list ( Step 65) If it is within the page image (Y in Step 65), the page image under the mouse coordinates is selected and displayed (Step 66). If it is not within the page image (N in step 65), if the ON coordinate is within the “return” button or the “display” button (see FIG. 8A), the ON coordinate button is brought into a selected display state ( Step 67).

On the other hand, if the mouse button is no longer in the ON state (N in step 61), and if the mouse coordinates at that time are not within the vertical scroll box (N in step 68), the page list dialog control unit 25 has the mouse coordinates set. It is determined whether it is in any page image in the list image (step 69). If it is within the page image (Y in step 69), the horizontal position information and the vertical position information of the selected page image (page image at the mouse coordinate position) are stored in the page image information data table (see FIG. 13). (Step 70).
If it is not within the page image (N in step 69), the page list dialog control unit 25 determines whether or not the mouse coordinates are within the “return” button (step 71). If it is within the “return” button (step 71). 71, the display of the page list dialog is terminated (step 72).

On the other hand, if the mouse coordinates are not within the “return” button (N in step 71), the page list dialog control unit 25 determines whether the mouse coordinates are within the “display” button (step 73). If it is within the “display” button (Y in step 73), the display of the page list dialog is terminated (step 74), and a document file including the selected page image is opened.
Subsequently, the page image vertical position information stored in the page image information data table is stored in the page display control table (see FIG. 13) as vertical scroll box position information (step 75). Further, the horizontal scroll box is moved to the horizontal position of the page image stored in the page image information data table (step 76), and the vertical scroll box is moved to the vertical position of the page image (step 77).
Thus, the selected page in the opened document file is displayed according to the scroll box position.

Next, an operation flow of page image storage control performed by the page image storage control unit 27 will be described with reference to FIG. Here, the image data of the page image on the screen displayed by the user's scroll box operation is stored.
First, the page image storage control unit 27 captures the entire image data of the document or image including the page image (step 91). Then, window information (upper left origin coordinates, width, height) is acquired by the page display window handle (step 92). Further, the page image saving control unit 27 extracts the image data of the page image in the window area from the entire image data and saves it in the page image file (see FIG. 14) (step 93).

Subsequently, the vertical scroll bar information is obtained by the vertical scroll bar handle (step 94), the value VP of the vertical scroll box position is extracted from the vertical scroll bar handle (step 95), and the page image file (FIG. 14) is obtained as the page image vertical position information. (See step 96). Also, horizontal scroll bar information is acquired by the horizontal scroll bar handle (step 97), the value HP of the horizontal scroll box position is extracted (step 98), and is stored in the page image file as page image horizontal position information (step 99). .
Thereafter, the total number of page images in the page image file is increased by 1 (step 100), and the operation flow is exited.

Next, an operation flow of page display control performed by the page display toolbar control unit 24 will be described with reference to FIG. It is assumed that this operation flow is periodically executed, a page number is given in the operation flow shown in FIG. 11 before entering this operation flow, and a page image of the page number is displayed.
First, the page display toolbar control unit 24 acquires the vertical scroll bar information of the display screen by the vertical scroll bar handle (step 101), and acquires the vertical scroll length VL from the information (step 102). The vertical scroll length VL is stored (step 103), and the vertical scroll box position VP is calculated from the following equation using the scroll length VL (step 104).
VP = vertical scroll length × (page number−1) / total number of pages = VL × (P−1) / TP
Subsequently, the calculated vertical scroll box position VP is stored in the page display control table 23 (step 105), and the display position of the vertical scroll box VBX is moved to the calculated position (step 106). Further, the page number is stored in the page display control table 23 (step 107), and the page number is displayed on the “page number” button in the page display toolbar TB (see FIG. 6) (step 108).

Next, an operation flow of window monitoring control performed by the window monitoring control unit 22 will be described with reference to FIGS. 16 and 17. Note that the window monitoring control unit 22 operates as a task (thread).
First, the window monitoring control unit 22 acquires window information of all windows being displayed, and stores the window information in a window information data table (see FIG. 16) (step 111). Then, the value of N in the work memory is set to 0 (step 112), and the acquired number, which is the number of windows acquired at that time, is stored in the window information data table. N is a value indicating the Nth window among the acquired windows.
Subsequently, the window monitoring control unit 22 determines whether or not the value of N is smaller than the number of acquisitions in the window information data table (step 113), and if it is smaller (Y in step 113), 1 of the acquired window information. One (the window information) indicates a vertical scroll bar window (step 114). If it is not a vertical scroll bar window (N in step 114), it is determined whether or not the window includes a vertical scroll bar. Determination is made (step 115). If the vertical scroll bar is not included (N in step 115), the value of N is increased by 1 (step 116), and the process is repeated from step 113.

On the other hand, if the window is a vertical scroll bar window (Y in step 114) or includes a vertical scroll bar (Y in step 115), the window monitoring control unit 22 has already set the vertical scroll bar in the page display control table 23. It is determined whether it is registered (step 117). If not registered (N in Step 117), the vertical scroll bar handle is stored in the page display control table 23 (Step 118).
Subsequently, the window monitoring control unit 22 searches for a window W (see FIG. 4) that is in contact with the vertical scroll bar VBR or a window (page display window) that includes the vertical scroll bar VBR (step 119). Then, the window handle of the found window is stored in the page display control table 23 (step 120).

Next, the window monitoring control unit 22 searches for a horizontal scroll bar window that underlies the page display window W or a horizontal scroll bar attached to the page display window (step 121). Then, the horizontal scroll bar handle of the found horizontal scroll bar is stored in the page display control table 23 (step 122).
Subsequently, the window monitoring control unit 22 causes the page total number input control unit 28 to execute page total number input control (step 123), and inputs the total number of pages displayed by one or more application programs at that time. The total number of pages is stored in the page display control table 23 (step 124). Further, the vertical scroll length in the page display control table 23 is set to 0 (step 125).

Next, the window monitoring control unit 22 sets the value of N in the work memory to 0 (step (step 126). If it is determined in step 113 that N has reached the acquisition number (N in step 113). If it is determined in step 117 that the vertical scroll bar is registered (Y in step 117), the process proceeds to step 126, and the value of N is set to zero.
Subsequently, the window monitoring control unit 22 determines whether or not N is smaller than the number of acquisition (step 127). If it is smaller (naturally smaller when proceeding from step 126 to step 127) (Y in step 127), It is checked whether or not the vertical scroll handle stored in the page display control table 23 exists in the window W being displayed (step 128). If it exists in the displayed window W (Y in step 128), the vertical scroll bar information is acquired by each existing vertical scroll bar handle (step 130).

Next, the window monitoring controller 22 determines whether or not the position of the vertical scroll box VBX has changed (step 131). If the position has not changed (N in step 131), it is determined whether a new page is added to or deleted from the document file, thereby changing the vertical scroll display length. (Step 132) If not changed (N in Step 132), the process proceeds to Step 140. On the other hand, if the position of the vertical scroll box VBX has changed (Y in step 131) or if the vertical scroll display length has changed (Y in step 132), the vertical scroll length VL or the like is displayed on the page. It is stored in the control table 23 (step 133), and the vertical scroll box position VP is stored in the page display control table 23 (step 134).
Further, the window monitoring control unit 22 calculates the page number from the following equation (135) and stores it in the page display control table 23 (step 136).
(Total number of pages TP × vertical scroll box position VP / vertical scroll length VL) +1
The calculated page number is displayed on the “page number” button in the page display toolbar TB (see FIG. 6) (step 137).

Thereafter, when the corresponding vertical scroll bar registered in the page display control table 23 is closed along with the termination of the application program, the window monitoring control unit 22 deletes the corresponding page image file (step 138). Then, the corresponding part in the page display control table 23 is updated and deleted, and when all the vertical scroll bars are closed and all the page image files are deleted, all of the page display control table 23 is deleted (step 139). .
After that, it is stopped for a predetermined time (about 100 ms) (step 140), and during that time, if the “end” button in the page display toolbar TB (see FIG. 6) is not pressed (N in step 141), it repeats from step 111, If the “end” button is pressed (Y in step 141), the window monitoring control is ended.

Next, an operation flow of the total page number input control performed by the total page number input control unit 28 will be described with reference to FIG.
In this embodiment, the page total number input control unit 28 obtains, from the window monitoring control unit 22, window information indicating a vertical scroll box in which page display control information is not registered, and the page total number input dialog TPD (FIG. 6 or FIG. 18) is displayed (step 151). Then, the number of digits in the page total number data table (see FIG. 18) is set to 0 (step 152).
When mouse data is received in this state (Y in step 153), the page total number input control unit 28 determines whether or not the mouse data indicates the ON state of the mouse button (step 154), and the ON state of the mouse button. (Y in step 154), the button under the mouse button coordinates is selected and displayed (step 155) (the same button coordinates are set from ON to OFF). If the mouse button is turned off (N in step 154), the button in the selection display state is returned to the normal display (step 156).

Subsequently, the page total number input control unit 28 determines whether or not the mouse coordinate is within the “number” button (step 157). If it is within the “number” button (Y in step 157), the button at the mouse coordinate position is determined. The numbers are stored in the page total number data table (step 158). Then, the value of the number of digits in the page total number data table is increased by 1 (step 159), and the page number is displayed on the page total number input dialog (step 160). For example, if 1, 2, 3 are entered, “123” is displayed in the order of entry.
On the other hand, if the mouse coordinates are not within the “number” button (N in step 157), the page total number input control unit 28 determines whether or not the mouse coordinates are the “Del” button (step 161). If it is within the “Del” button (Y in Step 161), if the value of the number of digits in the page total number data table is larger than 0 (Y in Step 162), the immediately preceding input number is deleted. Further, the value of the number of digits is decreased by 1 (step 163), and the page number is displayed in the total page number input dialog (step 164). If the value of the number of digits is 0 (N in step 162), the process is repeated from step 153.

On the other hand, if the mouse coordinates are not within the “Del” button (N in step 161), the page total number input control unit 28 determines whether or not the mouse coordinates are the “OK” button (step 165). If it is not within the “OK” button (N in step 165), the process is repeated from step 153. If the mouse coordinates are within the “OK” button (Y in step 165), the display of the page total number input dialog is terminated (step 166), and the page total input control task is called by the page total number input control task calling side. To exit from this operation flow.
Thus, according to this embodiment, in the first operation, instead of using the scroll box, page numbering is performed by specifying a page number or selecting a page image from a list displayed, and thereafter, as necessary. By scrolling using a scroll box or an arrow button in the scroll bar, a desired portion can be easily displayed. In particular, when the present invention is implemented on an electronic whiteboard or the like, when a specific page of a printed document is displayed in a presentation having a printed document with the same contents as the displayed document at hand, Since the page is also known, the desired page can be easily displayed. Further, in the configuration in which the page number is specified by using a list of reduced page images, the page number can be output without remembering the page number.

Further, in the configuration in which the page number is displayed when the page is displayed, the user can utilize the page number for confirmation of the displayed page, page turning, and the like, and therefore, a desired portion can be displayed more easily. .
In addition, by acquiring window information and scroll bar information for a document or image created and displayed by an arbitrary application program using an OS function, the above effects can be obtained for such a document or image. Can be obtained.
In the above, one embodiment has been described. However, a program programmed according to the scroll display method as described above is stored in a removable storage medium, and the storage medium can perform scroll display according to the present invention so far. According to the present invention, such an information processing apparatus is mounted on an information processing apparatus such as a personal computer that has not been installed, or such a program is transferred to such an information processing apparatus via a network. Scroll display can be performed.

It is an external view of tablet PC which shows one Embodiment of this invention. It is a block diagram of the tablet PC control system which shows one Embodiment of this invention. It is a data block diagram of the tablet PC control system principal part which shows one Embodiment of this invention. It is explanatory drawing regarding the scroll display in tablet PC which shows one Example of this invention. It is another explanatory drawing regarding the scroll display in tablet PC which shows one Example of this invention. It is another explanatory drawing regarding the scroll display in tablet PC which shows one Example of this invention. It is another explanatory drawing regarding the scroll display in tablet PC which shows one Example of this invention. It is another explanatory drawing regarding the scroll display in tablet PC which shows one Example of this invention. It is a block diagram of a display control system showing an embodiment of the present invention. It is an operation | movement flowchart of the mouse | mouth input control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of page display toolbar control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of page number dialog control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of page list dialog control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of the page image preservation | save control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of the page display control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of the window monitoring control in a display control system which shows one Example of this invention. It is another operation | movement flowchart of the window monitoring control in a display control system which shows one Example of this invention. It is an operation | movement flowchart of page total number input control in a display control system which shows one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic pen 2 Touch panel display 3 Liquid crystal display 4 PC main body 11 Touch panel driver 12 Mouse interface 13 Application processing part 21 Mouse input control part 22 Window monitoring control part 23 Page display control table 24 Page display toolbar control part 25 Page list dialog control part 26 Page number dialog control unit 27 Page image storage control unit 28 Total page number input control unit

Claims (17)

  In a display control system for scrolling and displaying the contents of an image or document that does not fit on one screen by moving the scroll box, display control for displaying a part of the image or document according to the display position of the vertical scroll box being displayed A page number designating unit for designating a page number of a page to be displayed; a display position computing unit for computing a display position value of a vertical scroll box from the page number designated by the page number designating unit; A display control system comprising scroll box position control means for moving the vertical scroll box to the display position of the value calculated by the display position calculation means.   2. The display control system according to claim 1, wherein display of the image or document is performed by an arbitrary application program.   In a display control system that scrolls and displays the contents of an image or document that does not fit on one screen by moving the scroll box, it supports image data of multiple page images extracted from an image or document displayed by an arbitrary application program Then, the image data storage means for storing the vertical position information of each page image, and the vertical of the page image specified when displaying the page image specified from the image data stored by the image data storage means Display position calculation means for calculating the value of the display position of the vertical scroll box from position information, and the vertical scroll box at the display position calculated by the display position calculation means when displaying an image or document displayed by the arbitrary application program Moving scroll Display control system characterized by comprising a box position control means.   4. The display control system according to claim 3, further comprising list display means for displaying a list of page images reduced in order to designate a page image from among the image data stored by the image data storage means. Display control system.   5. The display control system according to claim 1, wherein window information acquisition means for periodically acquiring window information of a window being displayed, and page display control information is registered from the window information acquisition means. A display control system comprising a page total number input control means for displaying an input dialog when acquiring window information indicating a vertical scroll box that is not displayed and inputting the total number of pages of the image or document.   In a scroll display method of scrolling and displaying the contents of an image or document that does not fit in one screen by moving the scroll box, when displaying a part of the image or document according to the display position of the vertical scroll box being displayed, A scroll display method characterized by designating a page number of a page to be displayed, calculating a value of a display position of a vertical scroll box from the page number, and moving the vertical scroll box to the display position of the calculated value.   7. The scroll display method according to claim 6, wherein the image or document is displayed by an arbitrary application program.   In a scroll display method that scrolls and displays the contents of an image or document that does not fit on one screen by moving the scroll box, it supports image data of multiple page images extracted from an image or document displayed by an arbitrary application program The vertical position information of each page image is saved, and when displaying an image or document displayed by the arbitrary application program, the display position of the vertical scroll box is determined from the vertical position information of the specified page image. And a vertical scroll box is moved to the calculated display position.   9. The scroll display method according to claim 8, wherein a list of page images reduced to designate a page image from stored image data is displayed.   10. The scroll display method according to claim 8, further comprising: storing horizontal position information of the page image in association with the image data of the plurality of page images and displaying the specified page image. The display position of the vertical scroll box is calculated from the vertical position information of the obtained page image, the display position of the horizontal scroll box is calculated from the horizontal position information, and the vertical scroll box and the horizontal scroll box are moved to the calculated display position. Scroll display method.   11. The scroll display method according to claim 8, 9 or 10, wherein the image data of the page image is stored using the image displayed in the window that is in contact with the vertical scroll bar as a page image.   11. The scroll display method according to claim 8, 9 or 10, wherein the stored page image data is automatically deleted when the registered vertical scroll bar is closed.   The scroll display method according to any one of claims 6 to 10, wherein window information indicating a vertical scroll box in which page display control information is not registered is obtained by periodically acquiring window information of a window being displayed. A scrolling display method characterized by automatically displaying a page total number input dialog when acquired, and inputting the total number of pages of the image or document.   The scroll display method according to any one of claims 6 to 10, further comprising displaying a page number.   The scroll display method according to any one of claims 6 to 10, wherein when the vertical scroll box is displayed, the display position of the vertical scroll box and the vertical scroll length are periodically detected, and when there is a change, A scroll display method characterized by calculating a page number corresponding to a display position and displaying the page number.   16. A program executed on an operating system, wherein the program is programmed to execute scroll display by the scroll display method according to any one of claims 6 to 15.   The computer-readable recording medium which recorded the program of Claim 16.

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