Novell LINUX ENTERPRISE DESKTOP 10 - GNOME 19-06-2006, Руководство пользователя, Страница: 137 / 172

Manipulating Graphics with The GIMP 137
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Resolution , which appears when the Advanced Options section is open. A resolution of 72 pixels per
inch corresponds to screen display. It is sufficient for Web page graphics. A higher resolution should
be used for images to print. For most printers, a resolution of 300 pixels per inch results in an
acceptable quality.
In Colorspace , select whether the image should be in color ( RGB ) or Grayscale . Select the Fill Type
for the new image. Foreground Color and Background Color use the colors selected in the toolbox.
White uses a white background in the image. Transparent creates a clear image. Transparency is
represented by a gray checkerboard pattern. Enter a comment for the new image in Comment .
When the settings meet your needs, press OK . To restore the default settings, click Reset . Clicking
Cancel aborts creation of a new image.
10.3.2 Opening an Existing Image
To open an existing image, select File > Open or press Ctrl+O. In the dialog that opens, select the
desired file. You can also press CtrlL and type directly the URI of the desired image. Then click OK
to open the selected image or press Cancel to skip opening an image.
10.3.3 Scanning an Image
Instead of opening an existing image or creating a new one, you can scan one. To scan directly from
the GIMP, make sure that the package
xsane
is installed. To open the scanning dialog, select File >
Acquire > XSane: scanning device .
Create a preview when the object to scan is smaller than the total scanning area. Press Acquire
preview in the Preview dialog to create a preview. If you want to scan only part of the area, select the
desired rectangular part with the mouse.
In the xsane dialog, select whether to scan a grayscale or color image and the required scan
resolution. The higher the resolution, the better the quality of the scanned image is. However, this
also results in a correspondingly larger file and the scanning process can take a very long time at
higher resolutions. The size of the final image (both in pixels and bytes) is shown in the lower part
of the dialog.
In the xsane dialog, use the sliders to set desired gamma, brightness, and contrast values. Changes
are visible in the preview immediately. Once all settings have been made, click Scan to scan the
image.
10.3.4 The Image Window
The new, opened, or scanned image appears in its own window. The menu bar in the top of the
window provides access to all image functions. Alternatively, access the menu by right-clicking the
image or clicking the small arrow button in the left corner of the rulers.
File offers the standard file options, such as Save and Print . Close closes the current image. Quit
closes the entire application.
With the items in the View menu, control the display of the image and the image window. New View
opens a second display window of the current image. Changes made in one view are reflected in all
other views of that image. Alternate views are useful for magnifying a part of an image for
manipulation while seeing the complete image in another view. Adjust the magnification level of the