A method and device for realizing zooming by using middle mouse button and scroll wheel

Abstract

The invention discloses a method for zooming by a middle mouse button and a scroll wheel. The method includes detecting and pressing the middle mouse button, judging whether the scroll wheel scrolls or not, and if yes, recording two coordinates P1 and P2 on a straight line L passing the current coordinate P0 of a mouse cursor, wherein the P1 and the P2 are arranged on two sides of the P0; judging the scrolling direction of the scroll wheel, if scrolling to the first direction, detecting that the middle mouse button rises, generating two slide events S1 and S2 by the P1 and the P2 as the starting points, and zooming the browsed content according to the slide events S1 and S2 and finishing this process, wherein the slide direction is deviated from the P0 along the straight line L if the slide event S1 takes the P1 as the starting point, and the slide direction is deviated from the P0 along the straight line L if the slide event S2 takes the P2 as the starting point; if scrolling to the second direction, triggering zoom out of the browsed content in the similar way. By adopting the method for zooming by the middle mouse button and the scroll wheel, zooming can be realized conveniently by the mouse, and user experience is improved.

Description

technical field [0001] The present application relates to the field of computer technology, and in particular to a method and device for realizing zooming by using a middle mouse button and a scroll wheel. Background technique [0002] The gesture zoom function is commonly used in digital devices with touch screens such as touch screen smart phones and tablet PCs with multi-touch functions. When the user touches the screen with two (or more) fingers and slides towards each other, it is equivalent to inputting a zoom-out command to the digital device. Conversely, when the user touches the screen with two (or more) fingers and slides in opposite directions , which is equivalent to inputting an enlargement command to the digital device. The gesture zoom function can be used to zoom in or zoom out webpages, pictures, etc. conveniently for users to browse. [0003] The following takes two-point touch as an example to illustrate the basic principle of gesture zooming. First rec...

AI Technical Summary

Problems solved by technology

For other digital devices that do not have a touch screen, gesture zooming cannot be achieved

For example, although many set-top box devices have the ability to recognize multi-touch events, the TV screen connected to the set-top box usually does not have the function of a touch screen. You can only use the mouse to control the set-top box to achieve relatively simple operations such as clicking, dragging, Swipe, etc.; when browsing maps, web pages, and pictures, the content cannot be zoomed, and the user experience is not good

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