Method for viewing a presentation document in a mobile device and a system thereof

A system for viewing a presentation document in a mobile device, characterized in that the system comprises:

• an orientation sensing module, which is used to determine an orientation of a screen according to a sensing signal from a gravity sensor;
• a thumbnail display switching module, which is used to display thumbnails of slides in the presentation document at lower part of the screen in a horizontal arrangement when the orientation of the screen is portrait;
• and to display the thumbnails of the slides in the presentation document at left part or right part of the screen in a vertical arrangement when the orientation of the screen is landscape;
• and
• a sliding switching module for the slides, which is used to set switching mode of a slide on focus as left/right sliding switching when the orientation of the screen is portrait;
• and to set the switching mode of the slide on focus as up/down sliding switching when the orientation of the screen is landscape, so that displaying of a slide main body is not blocked when sliding switching is performed;
• the system further comprises a display mode switching module, which is used to switch display mode of the slide on focus to a portrait mode when the orientation of the screen is portrait;
• and to switch the display mode of the slide on focus to a landscape mode when the orientation of the screen is landscape.