Background
The Background module allows you to configure colors or wallpapers for your desktop background.
It is comprised of three areas:
Desktop selection and Name area.
The background Preview Monitor
An area for determining the background
Desktop 	 The area labeled Desktop, lists the currently configured desktops identified by their names.
To configure the background for a desktop, start by clicking on the desktops name.
If you wish to configure all your desktop backgrounds the same, select the checkbox labeled Common Background.
If you want to change the names of your desktop, you can do that in another module. See Desktop: Number of Desktops for more details.
Preview Monitor 	 This is a preview window. It will give you a sense of what to expect with each change.
The display background can be filled: with a single color, with a single color with a pattern over it, by any external program of your choice, or with one of several color gradients.
The area at the bottom is for determining the background contents. It is divided into three tabs.
Background 	 This tab, allows you to fill the screen with color.
You should first select the appropriate choice in the drop down box labeled Mode. Your options are:
Flat 	By choosing this mode, you select one color (using the color button labeled Color 1), and the entire background is covered with this one color.
Pattern 	By choosing this mode, you select two colors (using both color buttons).
You then select a pattern by clicking Setup. This opens a new dialog window, which gives you the opportunity to Select a pattern. Simply click once on the pattern of your choice, then click on OK, and will render the pattern you selected using the two colors you selected. For more on patterns, see the section Adding, Removing and Modifying Patterns.
Background Program 	By selecting this option, you can have use an external program to determine the background. This can be any program of your choosing. For more information on this option, see the section entitled Using an external program.
Horizontal Gradient 	By choosing this mode, you select two colors (using both color buttons). will then start with the color selected by Color 1 on the left edge of the screen, and slowly transform into the color selected by Color 2 by the time it gets to the right edge of the screen.
Vertical Gradient 	By choosing this mode, you select two colors (using both color buttons). will then start with the color selected by Color 1 on the top edge of the screen, and slowly transform into the color selected by Color 2 as it moves to the bottom of the screen.
Pyramid Gradient 	By choosing this mode, you select two colors (using both color buttons). will then start with the color selected by Color 1 in each corner of the screen, and slowly transform into the color selected by Color 2 as it moves to the center of the screen.
Pipecross Gradient 	By choosing this mode, you select two colors (using both color buttons). will then start with the color selected by Color 1 in each corner of the screen, and slowly transform into the color selected by Color 2 as it moves to the center of the screen. The shape of this gradient is different then the pyramid gradient.
Elliptic Gradient 	By choosing this mode, you select two colors (using both color buttons). will then start with the color selected by Color 2 in the center of the screen, and slowly transform into the color selected by Color 1 as it moves to the edges, in an elliptical pattern.
Wallpaper 	 This tab, allows you to load a wallpaper on top of the color gradient.
The wallpaper is an image displayed in the background of your display.
Before you select your wallpaper, you should choose between Single Wallpaper and Multiple Wallpapers. If you choose No Wallpaper then only the background color(s) are displayed.
You should choose one of the modes from the drop down box labeled Mode. Your choices are:
Centered 	The image will be centered on the screen without changing the size of the image. The background colors will be present anywhere the image does not cover.
Tiled 	The image will be duplicated until it fills the entire desktop. The first image will be placed in the upper left corner of the screen, and duplicated downward and to the right.
Center Tiled 	The image will be duplicated until it fills the entire desktop. The first image will be placed in the center of the screen, and duplicated upward, downward to the right, and to the left.
Centered Maxpect 	The image will be placed in the center of the screen. It will be scaled to fit the desktop, but it will not change the aspect ratio of the original image. This will provide you with an image that is not distorted.
Tiled Maxpect 	 The image will be placed in the corner of the screen. It will be scaled to fit the desktop, but it will not change the aspect ratio of the original image. This will provide you with an image that is not distorted. If there is any space over, the image will be duplicated to fill it.
Scaled 	The image will be scaled to fit the desktop. It will be stretched to fit to all four corners.
If you have selected No Wallpaper selected, you will not be able to choose a wallpaper.
Simply change to any other mode. You will now be able to select a wallpaper.
To select a wallpaper, you may either select the wallpaper from the drop down list labeled Wallpaper, or by clicking on the Browse button.
Displaying wallpaper requires that the image be kept in memory. If you are low on memory, using a small, tiled image or none at all is recommended.
Scaling or centering a small image still requires an image the size of your display to be maintained in memory.
You may also select Multiple which causes a sequence of backgrounds to be displayed. The sequence can be either random, or in a specific order.
You select this, by placing a mark in the checkbox labeled Multiple. You then click Setup. For more on this, read the section entitled Sequential Backgrounds.
The third tab, Advanced, contains the options to make a smooth transition (blend) from the wallpaper as it changes to the background.
The blending area consists of three elements:
A drop-down box, which allows you to select the blending mode. Many of the modes are similar to blending modes for background colors. Select your mode from the list, and the preview window shows you what it will look like.
Balance slider. This adjusts the blending. The results can be seen in the preview window.
Limit pixmap cache. This check box, when selected, allows you to determine how much maximum memory will use to store pixmap info. The default is usually the best choice.
Clicking Apply, changes the actual desktop backgrounds and makes the change permanent.

Adding, Removing and Modifying Patterns
A pattern, is a picture file, which uses as a template to draw your background. The picture file provides the shapes, but provides the colors. 2.2 is packaged with several patterns, but you can add new patterns.
You use a pattern by first selecting Pattern, from the Mode drop down box in the Background section.
Then you click Setup.
This opens a dialog box. The dialog box consists of a list of all current patterns, and three buttons: Add, Remove, and Modify.
In front of some of the pattern names, is a small globe. This signifies that this is a system wide (or global) pattern, and is available to everyone. Those patterns without a picture, are user patterns, and not available to other users.
To use a pattern that is already on the list, simply click once on the pattern, then click on OK.
Adding a pattern to the list
If you click on the Add button, yet another dialog box appears, with three blanks:
A text entry line labeled Name. This will be the descriptive name of the newly created pattern.
A text entry line labeled Comment. This is a descriptive comment. It is also a good place to enter the artist, date of creation,
A text entry line labeled Image, and a Browse button next to it. Either by entering the filename directly into the text entry line, or by browsing through the button labeled Browse, you need to locate for an image file to use in the pattern. These image files are usually JPEG files.
Once you have selected a file, you can press OK to create the new pattern based on the information you have edited, or click Cancel, to stop without creating a new pattern.
You should now see your new pattern in the list.
To remove a pattern from the list, simply click on the name of the pattern once, and click Remove. will verify that you do want to delete this pattern. Simply Click Yes. Clicking No will not remove the pattern from the list.
Deleting a pattern does not delete the image file associated with the pattern.
If you did not create the pattern, you cannot remove the pattern from the system. Only the system administrator can remove global patterns.
To modify a pattern, simply click on the pattern name and then click on Modify. You will now have a chance to change any parameters of the pattern. Click OK to save your changes, or click Cancel to ignore your changes

Using external programs to determine background
To use an external program to determine and change the background of , simply select Background Program. To configure this option, then click Setup.
This will bring up a dialog box, which will let you add in one or more programs, determine their options, set their refresh times,
Using external programs to modify or change the background is beyond the scope of this document.

Sequential and Random Backgrounds
can automatically change wallpapers on your system at a specified time. You give it the list of image files, and it can either change them in a predetermined order, or randomly.
To have automatically change your wallpaper, first you must set the layout of the wallpaper in the drop down box labeled Mode. Then select the Multiple Wallpapers option. The Setup Multiple ... Button will become active. Click it once.
This will bring up a dialog box.
First, set the time between changes in the spin box labeled Interval. You can select from common values, or enter your own. The range of values is from once every 5 minutes to once every 240 minutes.
Now, use the drop down box labeled mode to determine if the backgrounds should be chosen randomly, or displayed in the order listed below.
Once this is done, you can now create a list of backgrounds for to choose from. Use the Add and Remove buttons to alter the list to your satisfaction.
Click OK to accept your changes, or Cancel to leave without making any changes permanent.

Section Author
Mike McBride mpmcbride7@yahoo.com, Mark Donohoe, Martin Jones mjones@kde.org, Duncan H.