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of a Lake as a wallpaper]] The terms wallpaper and '''desktop picture''' refer to an image used as a background on a computer screen, usually for the Desktop of a Graphical User Interface . 'Wallpaper' is the term used in Microsoft Windows , while the Mac OS avoids mixing metaphors by calling it a 'desktop picture' (prior to Mac OS X , the term '''desktop pattern''' was used to refer to a small pattern that was repeated to fill the screen). FORMATS Images used as computer wallpaper are usually Raster Graphics with the same size as the Display Resolution (for example 1024×768 pixels, or 1280×1024 pixels) in order to fill the whole background. Many screen resolutions are Proportional , so an image scaled to fit in a different-sized screen will often be the correct shape, albeit that scaling may impact quality. PNG and JPEG format are common. Users with ) monitors can often be Scaled or Cropped to the correct shape without loss of quality. Wallpapers are sometimes available in double-width versions (e.g. 2560×1024) for displaying on multi-monitor computers, where the image appears to fill two monitors. Smaller images can be tiled (repeated) to fill large areas, and depending on how skilfully the wallpaper was created, the effect can look reasonably good. However, if the join is too obvious, or the image repeats too many times, it can appear to be very redundant. With the increase in color screen Mobile Phones , wallpapers are starting to appear scaled to their lower resolution. These are often sold at a high profit to telephone users, although some phones have software which allows images to be uploaded from a computer. Mobile telephones with cameras can often use images from the camera, or from a received image, as the wallpaper. Most display systems are capable of specifying a single-colour to use as the background in place of a wallpaper, and some (such as KDE ) allow colour-gradients to be specified. MS Windows 9x systems allow using editable repeating two-color 8x8 tiles for background. Some desktop systems, like MacOS version 8.6 or later, or KDE version 3.4 or later, support Vector wallpapers in PICT or SVG format, respectively. This has the advantage that a single file may be used for screens of any size, or stretched across several screens, without loss of quality. STYLES Wallpaper styles are as varied as people themselves, using photographs, Drawing s, 3D renders or abstract pattern with complex Gradient s. It can be useful to have plain areas so that Icon s can be clearly seen atop the wallpaper. Typical categories can include Cars , Models and Celebrities , Holiday Photos , Abstract Art , Movies , Pets , Symmetrical and Scenery . In business use, corporate Logos or plain backgrounds are often specified by the IT Department . When using Rack Mounted computers through a KVM Switch , it can often be useful to create a wallpaper with the computer's name on it, to easily identify which computer you're connected to. DYNAMIC BACKGROUNDS Some operating environments (e.g. KDE and Mac OS X ) allow a number of different wallpapers to be used, and "rotated" to display a different wallpaper at different times, to display a Random image from a directory. If the facility is not available in the OS' wallpaper settings, it may be possible to get an external program which can change the wallpaper at certain times. Programs such as Xplanet and EarthDesk use Internet connections and graphics calculations to change the wallpaper with real data, such as a shadowed view of the earth, the latest cloud or weather map, or various events. Some media players can redirect video playback to desktop, allowing using any video as a wallpaper. Other tools (for example WireChanger ) can add interactive Widgets to a wallpaper, such as calendar, notes, RSS Feed , or generate a wallpaper image using various algorithms. SETTING THE WALLPAPER ON A COMPUTER
Web Browser s and Image Viewer s often have the ability to set an image as the desktop background if you right-click it or choose a menu option. SEE ALSO |
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