Mousewheel scrolling?[SDL 2.03] |
Mousewheel scrolling?[SDL 2.03] |
Faluk
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The mouse wheel even has the up and down information. If you have a event receiver function and an update function. Trough the event function you can get if the mouse moved up or down and the update function you can get the last wheel state and reset it. In this way you can get the direction for every loop. If the wheel move faster you will be able to get a value different than 0 in more loops.
Take a look to this tutorial, may be helpful. http://www.falukdevelop.com/2016/09/07/sdl2_mouse_implementation/ Greetings! 2016-10-17 7:27 GMT+02:00 theatron:
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Mousewheel scrolling?[SDL 2.03] |
Sanette
Guest
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1. the basic behaviour is to add some fixed number of pixels to the
vertical position of the element you want to scroll at each mouse wheel event. for instance add (5 multiplied by the y field of SDL_MouseWheelEvent) 2. if your event loop is not continuous or too slow, the events will accumulate. It's a good idea to sum them up at once (and remove them from the event queue). 3. if you want *smooth* scrolling like in most browsers, it is much more delicate. Few people have a good code for this. Le 17/10/2016 à 07:27, theatron a écrit :
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