Display Device

An image display method in a device provided with a touch panel, the image display method comprising:

• setting, as an operation mode for changing an image displayed on an operation surface of the touch panel by tracing the operation surface, a linear operation mode in which the image is changed by tracing the operation surface substantially along a straight line, and a circular-arc operation mode in which the image is changed by tracing the operation surface substantially along a circular arc;
• discriminating a characteristic manner in which the touch panel is traced based on information acquired from the touch panel when the operation surface is being traced, and deciding which one of the linear operation mode and the circular-arc operation mode based on the discriminated characteristics is the operation mode;
• and
• changing the one operation mode decided by the decision to the other operation mode when there is a change in the characteristic manner of tracing.

A non-transitory storage medium storing therein an image display program causing a computer provided with a touch panel to execute:

• setting, as an operation mode for changing an image displayed on an operation surface of the touch panel by tracing the operation surface, a linear operation mode in which the image is changed by tracing the operation surface substantially along a straight line, and a circular-arc operation mode in which the image is changed by tracing the operation surface substantially along a circular arc;
• discriminating a characteristic manner in which the touch panel is traced based on information acquired from the touch panel when the operation surface is being traced, and deciding which one of the linear operation mode and the circular-arc operation mode based on the discriminated characteristics is the operation mode;
• and
• changing the one operation mode decided by the decision to the other operation mode when there is a change in the characteristic manner of tracing.