IMAGE DISPLAY APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM

• US 20150067456A1
• Filed: 08/21/2014
• Published: 03/05/2015
• Est. Priority Date: 08/28/2013
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kashibuchi, Yoichi
• Granted Patent: US 9,563,606 B2
• Time in Patent Office: Days
• US Class Current: 715/201
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 40/103 Formatting, i.e. changing of presentation of documents automatic justification G06F40/189; automatic line break hyphenation G06F40/191
• CPC Class Codes: G06T 3/20 Linear translation of whole images or parts thereof, e.g. panning

Abstract

Provided is an image display apparatus that displays a page image including a plurality of objects on a screen, determines an amount of movement of the end of the object to be displayed from the end of the screen by detecting a user operation on a touch panel, and sets the end position of the object based on the determined amount of movement when the object to be displayed is larger than the screen.

Claims

1. An image display apparatus comprising:

a displaying unit configured to display a page image including a plurality of objects on a screen;

a determining unit configured to determine an amount of movement of the end of the object to be displayed from the end of the screen by detecting an operation on the screen; and

a setting unit configured to set the end position of the object based on the determined amount of movement when the object to be displayed is larger than the screen.

2. The image display apparatus according to claim 1, wherein, when the determining unit determines that the amount of movement of the end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the setting unit sets the display position of the object such that the opposite end of the object against the end of the object which has moved to the inside of the screen in a movement direction is displayed at a position of the end of the screen opposite the end of the screen in the movement direction, whereas when the determined amount of movement is less than a predetermined amount, the setting unit sets the display position of the object such that the end of the object which has moved to the inside of the screen is displayed at the position of the end of the screen.

3. The image display apparatus according to claim 1, wherein, when an attribute of the object is character and a typesetting direction of the character string of the object is horizontal, the determining unit determines an amount of movement of a left and right ends of the object to the inside of the screen, whereas when the attribute of the object is character and the typesetting direction of the character string of the object is vertical, the determining unit determines an amount of movement of a top and bottom ends of the object to be displayed to the inside of the screen.

4. The image display apparatus according to claim 3, wherein, when the typesetting direction of the character string of the object is horizontal and the determining unit determines that the amount of movement of the right end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the upward direction by the height of the character size such that the left end of the object is displayed at the left end position of the screen, whereas when the typesetting direction of the character string of the object is horizontal and the determining unit determines that the amount of movement of the left end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the downward direction by the height of the character size such that the right end of the object is displayed at the right end position of the screen.

5. The image display apparatus according to claim 3, wherein when the typesetting direction of the character string of the object is vertical and the determining unit determines that the amount of movement of the bottom end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the rightward direction by the width of the character size such that the top end of the object is displayed at the top end position of the screen, whereas when the typesetting direction of the character string of the object is vertical and the determining unit determines that the amount of movement of the top end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the leftward direction by the width of the character size such that the bottom end of the object is displayed at the bottom end position of the screen.

6. The image display apparatus according to claim 3, wherein, when the determining unit determines that the amount of movement of the left end of the object which has moved out of the screen is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the upward direction by the height of the object displayed on the screen such that the left end of the object is displayed at the left end position of the screen, whereas when the determining unit determines that the amount of movement of the right end of the object which has moved out of the screen is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the downward direction by the height of the object displayed on the screen such that the right end of the object is displayed at the right end position of the screen.

7. The image display apparatus according to claim 3, wherein, when the determining unit determines that the amount of movement of the top end of the object which has moved out of the screen is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the rightward direction by the width of the object displayed on the screen such that the top end of the object is displayed at the top end position of the screen, whereas when the determining unit determines that the amount of movement of the bottom end of the object which has moved out of the screen is more than a predetermined amount, the setting unit sets the display position of the object by moving the object in the leftward direction by the width of the object displayed on the screen such that the bottom end of the object is displayed at the bottom end position of the screen.

8. The image display apparatus according to claim 1, wherein, when the determining unit determines that the amount of movement of the end of the object from the end of the screen to the inside thereof is more than a predetermined amount, the displaying unit sets an icon indicating that the opposite end of the object against the end of the object which has moved to the inside of the screen in a movement direction is displayed at a position of an end of the screen against the end of the screen in the movement direction on the screen, whereas when the determined amount of movement is less than a predetermined amount, the displaying unit displays an icon indicating that the end of the object which has moved to the inside of the screen is displayed at the position of the end of the screen.

9. The image display apparatus according to claim 8, wherein the displaying unit lights the end position of the screen corresponding to the end of the object displayed based on the amount of movement instead of the icon.

10. The image display apparatus according to claim 3, wherein, when the typesetting direction of the character string of the object is horizontal, the setting unit sets the display position of the object such that the left end of the object is displayed at the left end position of the screen if the determining unit determines that the amount of movement of the right end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the setting unit sets the display position of the object such that the right end of the object is displayed at the right end position of the screen if the determining unit determines that the amount of movement of the left end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the determining unit further detects an immediately preceding operation on the screen,

the setting unit sets the display position of the object by moving the object in the upward direction by the height of the character size if the determining unit determines that the object has moved in the upward direction, and

the setting unit sets the display position of the object by moving the object in the downward direction by the height of the character size if the determining unit determines that the object has moved in the downward direction.

11. The image display apparatus according to claim 3, wherein, when the typesetting direction of the character string of the object is vertical, the setting unit sets the display position of the object such that the top end of the object is displayed at the top end position of the screen if the determining unit determines that the amount of movement of the bottom end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the setting unit sets the display position of the object such that the bottom end of the object is displayed at the bottom end position of the screen if the determining unit determines that the amount of movement of the top end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the determining unit further detects an immediately preceding operation on the screen,

the setting unit sets the display position of the object by moving the object in the rightward direction by the width of the character size if the determining unit determines that the object has moved in the rightward direction, and

the setting unit sets the display position of the object by moving the object in the leftward direction by the width of the character size if the determining unit determines that the object has moved in the leftward direction.

12. The image display apparatus according to claim 1, wherein, when the attribute of the object is table, the setting unit sets the display position of the object such that the left end of the object is displayed at the left end position of the screen if the determining unit determines that the amount of movement of the right end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the setting unit sets the display position of the object such that the right end of the object is displayed at the right end position of the screen if the determining unit determines that the amount of movement of the left end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the determining unit further detects an immediately preceding operation on the screen,

the setting unit sets the display position of the object by moving the object in the upward direction by one cell if the determining unit determines that the object has moved in the upward direction,

the setting unit sets the display position of the object by moving the object in the downward direction by the one cell if the determining unit determines that the object has moved in the downward direction.

13. The image display apparatus according to claim 1, wherein, when the attribute of the object is table, the setting unit sets the display position of the object such that the bottom end of the object is displayed at the bottom end position of the screen if the determining unit determines that the amount of movement of the top end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the setting unit sets the display position of the object such that the top end of the object is displayed at the top end position of the screen if the determining unit determines that the amount of movement of the bottom end of the object from the end of the screen to the inside thereof is more than a predetermined amount,

the determining unit further detects an immediately preceding operation on the screen,

the setting unit sets the display position of the object by moving the object in the rightward direction by one cell if the determining unit determines that the object has moved in the rightward direction, and

the setting unit sets the display position of the object by moving the object in the leftward direction by the one cell if the determining unit determines that the object has moved in the leftward direction.

14. A method for controlling an image display apparatus, the method comprising:

displaying a page image including a plurality of objects on a screen;

determining an amount of movement of the end of the object to be displayed from the end of the screen by detecting an operation on the screen; and

setting the end position of the object based on the determined amount of movement when the object to be displayed is larger than the screen.

15. A non-transitory storage medium on which is stored a computer program for making a computer execute the control method according to claim 14.