Display control apparatus and control method thereof

A control method of a display control apparatus comprising:

• detecting a touch operation on a display unit;
• and
• performing control, in a case where a multi-touch operation on the display unit is detected, and a predetermined touch operation maintained on the display unit from a time before detection of the multi-touch operation is not detected, such that a display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation, with reference to a first position that is based on the positions at which the multi-touch operation is performed, the predetermined touch operation including movement of a touch position on the display unit;
• and
• performing control, in a case where the predetermined touch operation is detected, and a multi-touch operation on the display unit is detected while at least one touch of the predetermined touch operation has been maintained after the predetermined touch operation was performed, such that the display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation, with reference to a second position that is not based on the positions at which the multi-touch operation is performed.

A display control apparatus comprising:

• a touch detector configured to detect a touch operation on a display unit;
• and
• a memory and at least one processor and/or at least one circuit to perform the operations of the following units:
• a display control unit configured to:
• perform control, in a case where a multi-touch operation on the display unit is detected after a predetermined time has elapsed since a predetermined touch operation was detected, such that a display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation, with reference to a first position that is based on the positions at which the multi-touch operation is performed, the predetermined touch operation including movement of a touch position on the display unit, and
• perform control, in a case where a multi-touch operation on the display unit is detected within the predetermined period after the predetermined touch operation was detected, such that the display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation with reference to a second position that is not based on the positions at which the multi-touch operation is performed.

A non-transitory computer-readable storage medium storing a program for causing a computer to function as a display control unit of a display control apparatus having a touch detector configured to detect a touch operation on a display unit, wherein the display control unit is configured to:

• perform control, in a case where the touch detector detects a multi-touch operation on the display unit without detecting a predetermined touch operation maintained on the display unit from a time before detection of the multi-touch operation, such that a display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation, with reference to a first position that is based on the positions at which the multi-touch operation is performed, the predetermined touch operation including movement of a touch position on the display unit, and
• perform control, in a case where the touch detector detects the predetermined touch operation and the touch detector detects a multi-touch operation while at least one touch of the predetermined touch operation has been maintained after the predetermined touch operation was performed, such that the display object displayed on the display unit is enlarged or reduced in accordance with the multi-touch operation, with reference to a second position that is not based on the positions at which the multi-touch operation is performed.