Method and apparatus for adjusting the image display

A computing device comprising:

• a processor;
• a touch screen;
• memory;
• and
• one or more program modules stored in the memory and to be executed by the processor, wherein the one or more program modules further include instructions for:
• displaying an original image on the touch screen at its current orientation including a horizontal axis and a vertical axis, both axes located within the touch screen and perpendicular to each other;
• detecting a first single-finger gesture on the touch screen that exceeds a first threshold speed and is less than a second threshold speed, wherein (i) the first threshold speed is greater than zero, and (ii) the first single-finger gesture starts at a first position on the touch screen, continues to a second position, different from the first position, on the touch screen, and ends at the second position on the touch screen;
• in response to detecting the first single-finger gesture on the touch screen that is less than the second threshold speed, maintaining the original image on the touch screen at the current orientation;
• detecting a second single-finger gesture on the touch screen that exceeds the second threshold speed, wherein the second single-finger gesture also starts at the first position on the touch screen, continues to the second position on the touch screen, and ends at the second position on the touch screen;
• in response to detecting the second single-finger gesture on the touch screen that exceeds the second threshold speed:
• calculating an orientation of the second single-finger gesture based on the first position and the second position;
• in accordance with a determination that the orientation of the second single-finger gesture is within a predefined angular range from the horizontal axis of the current orientation of the original image, dynamically flipping the original image around the vertical axis of the current orientation by 180° to a new image;
• and
• in accordance with a determination that the orientation of the second single-finger gesture is within a predefined angular range from the vertical axis of the current orientation of the original image, dynamically flipping the original image around the horizontal axis of the current orientation by 180° to the new image,
• wherein the new image is a mirror image of the original image.

A non-transitory computer readable medium storing one or more program modules, wherein the one or more program modules, when executed by a computing device having a processor and a touch screen, cause the computing device to perform the following operations:

• displaying an original image on the touch screen at its current orientation including a horizontal axis and a vertical axis, both axes located within the touch screen and perpendicular to each other;
• detecting a first single-finger gesture on the touch screen that exceeds a first threshold speed and is less than a second threshold speed, wherein (i) the first threshold speed is greater than zero, and (ii) the first single-finger gesture starts at a first position on the touch screen, continues to a second position, different from the first position, on the touch screen, and ends at the second position on the touch screen;
• in response to detecting the first single-finger gesture on the touch screen that is less than the second threshold speed, maintaining the original image on the touch screen at the current orientation;
• detecting a second single-finger gesture on the touch screen that exceeds the second threshold speed, wherein the second single-finger gesture also starts at the first position on the touch screen, continues to the second position on the touch screen, and ends at the second position on the touch screen;
• in response to detecting the second single-finger gesture on the touch screen that exceeds the second threshold speed:
• calculating an orientation of the second single-finger gesture based on the first position and the second position;
• in accordance with a determination that the orientation of the second single-finger gesture is within a predefined angular range from the horizontal axis of the current orientation of the original image, dynamically flipping the original image around the vertical axis of the current orientation by 180° to a new image;
• and
• in accordance with a determination that the orientation of the second single-finger gesture is within a predefined angular range from the vertical axis of the current orientation of the original image, dynamically flipping the original image around the horizontal axis of the current orientation by 180° to the new image,
• wherein the new image is a mirror image of the original image.