A method for controlling a display input device comprising a display section that displays an object and a touch panel section for detecting a touch operation, the touch panel section being disposed at the display section, the method comprising:
- a step of displaying the object at the display section;
- a step of making a shift to a rotation mode or to an enlargement/reduction mode when a mode switching operation is detected to have been performed on the touch panel section while the object is being displayed, the mode switching operation being a touch operation in which two touches are made by touching two points as two touch points on the touch panel section and then one of the two touches is released, leaving one of the two touch points continuously touched as a continuous touch point;
- and
- a step where
- in a case in which a shift has been made to the rotation mode, when a display changing operation is performed on the touch panel section, the display changing operation being a touch operation in which a point is newly touched as a new touch point besides the continuous touch point which has been continuously touched ever since the mode switching operation and then a position of the new touch point or of the continuous touch point is moved, the display section is made to perform a rotation display in which the object is rotated according as a predetermined touch point moves, the predetermined touch point being a touch point a position of which is moved in the display changing operation, and when being made to perform the rotation display, the display section is made to increase a rotation angle of the object per unit movement amount of the predetermined touch point according as a distance between the two touch points touched in the mode switching operation is larger, and
- in a case in which a shift has been made to the enlargement/reduction mode, when the display changing operation is performed on the touch panel section, the display section is made to perform an enlargement/reduction display in which the object is enlarged or reduced according as the predetermined touch point moves, and when being made to perform the enlargement/reduction display, the display section is made to increase an enlargement amount or a reduction amount of the object per unit movement amount of the predetermined touch point according as a distance between the two points touched in the mode switching operation is larger.