FILE CONTENT DISPLAY DEVICE, FILE CONTENT DISPLAY METHOD, AND COMPUTER PROGRAM THEREFORE

• US 20070016855A1
• Filed: 07/13/2006
• Published: 01/18/2007
• Est. Priority Date: 07/14/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kato, Eiji, Masukawa, Akihiro
• Granted Patent: US 7,739,616 B2
• Time in Patent Office: Days
• US Class Current: 715/201
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

The present invention relates to a technique for displaying the contents of a file on a display of a computer. Upon receiving an enlargement instruction for performing an enlarged display of a file, a computer detects whether an object included in the file is to be included in an enlarged display range of the file. When it is detected that the object is not to be included in the enlarged display range, the enlarged display range is automatically changed, whereby a user can understand which part of the file the enlarged display range corresponds to without performing a complicated operation.

Claims

1. A file content display device comprising:

a displaying unit configured to display, in a display area, the contents of a file that includes an object;

an accepting unit configured to accept an enlargement instruction for performing an enlarged display of the file;

a deciding unit configured to decide a display range of the file to be displayed in the display area in accordance with the accepted enlargement instruction;

a detecting unit configured to detect whether the object is to be at least partially included in the display range of the file; and

a changing unit configured to change the decided display range when the detecting unit detects that the object is not to be at least partially included in the display range of the file.

2. The file content display device according to claim 1, wherein, when the detecting unit detects that the object is to be at least partially included in the display range of the file, the displaying unit displays the decided display range of the file in the display area.

3. The file content display device according to claim 1, further comprising an error displaying unit configured to display an error notification screen when it is detected by the detecting unit that the object is not to be at least partially included in the display range of the file.

4. The file content display device according to claim 1, further comprising

a setting unit configured to set whether the change of the display range performed by the changing unit is allowed, and

wherein, when the change of the display range is set to be allowed by the setting unit, the changing unit changes the display range.

5. The file content display device according to claim 1, wherein the enlargement instruction includes the designation of a scaling factor and a datum position.

6. The file content display device according to claim 1, wherein the object is at least one of image data, text data, or graphic data.

7. A file content display method comprising:

displaying, in a display area, the contents of a file that includes an object;

accepting an enlargement instruction for performing an enlarged display of the file;

deciding a display range of the file to be displayed in the display area in accordance with the accepted enlargement instruction;

detecting whether the object is to be at least partially included in the display range of the file; and

changing the decided display range when it is detected that the object is not to be at least partially included in the display range of the file.

9. Computer-executable process steps for causing a computer to carry out the method of claim 7.

8. A storage medium on which a program for causing a computer to perform a file content display method is stored, the file content display method comprising the steps of:

displaying, in a display area, the contents of a file that includes an object;

accepting an enlargement instruction for performing an enlarged display of the file;

deciding a display range of the file to be displayed in the display area in accordance with the accepted enlargement instruction; and

detecting whether the object is to be at least partially included in the display range of the file; and

changing the decided display range when it is detected that the object is not to be at least partially included in the display range of the file.