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Carmack used these capabilities to create a buffer that is 64 pixels wider and taller than the screen, leaving room for two extra rows and columns of tiles in the buffer off the edge of the screen. He used the offset capabilities of the card to let the screen slide through the buffer for smooth scrolling, which partially reveals the extra tiles.
Scrolling may take place in discrete increments (perhaps one or a few lines of text at a time), or continuously (smooth scrolling). Frame rate is the speed at which an entire image is redisplayed. It is related to scrolling in that changes to text and image position can only happen as often as the image can be redisplayed.
Operating systems differ as to whether the keys (pressed without modifier) simply move the view – e.g. in Mac OS X – or also the input caret – e.g. in Microsoft Windows. In right-to-left settings, PgUp will move either upwards or rightwards (instead of left) and PgDn will move down or leftwards (instead of right).
Examples of horizontal and vertical scrollbars around a text box Examples of vertical scrollbar at right end of Wikipedia home page. A scrollbar is an interaction technique or widget in which continuous text, pictures, or any other content can be scrolled in a predetermined direction (up, down, left, or right) on a computer display, window, or viewport so that all of the content can be viewed ...
Windows 10 Creators Update, or Windows 10 Version 1703, codenamed "Redstone 2", is a feature update to Windows 10 released on April 11, 2017. The first preview for this release was seeded out to Windows Insiders on August 11, 2016. The Redstone 2 release of Windows 10 is currently in the development branch and available for Windows Insiders.
Windows 7 introduces a desktop slideshow feature that periodically changes the desktop wallpaper based on a user-defined interval; the change is accompanied by a smooth fade transition with a duration that can be customized via the Windows Registry. [9] The desktop slideshow feature supports local images and images obtained via RSS. [10] [11] [12]
Closeup of a touchpad on an Acer CB5-311 laptop Closeup of a touchpad on a MacBook 2015 laptop. A touchpad or trackpad is a type of pointing device.Its largest component is a tactile sensor: an electronic device with a flat surface, that detects the motion and position of a user's fingers, and translates them to 2D motion, to control a pointer in a graphical user interface on a computer screen.
A computer mouse Touchpad and a pointing stick on an IBM notebook Trackpoint An elder 3D mouse 3D pointing device. A pointing device is a human interface device that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer.