Novell SuSE Linux Professional 9.2 Upgrade [Strong Encryption 128 Bit] 00662644457260 ユーザーズマニュアル
製品コード
00662644457260
20
Manipulating
Gr
a
a
phics
with
The
GIMP
Layers, Channels, Paths, Undo
In the first section, use the drop-down box to select the image to which the tabs
refer. By clicking ‘Auto’, control whether the active image is chosen automatically.
By default, ‘Auto’ is enabled.
refer. By clicking ‘Auto’, control whether the active image is chosen automatically.
By default, ‘Auto’ is enabled.
‘Layers’ shows the different layers in the current images and can be used to ma-
nipulate the layers. Information is available in Layers on page 248. ‘Channels’
shows and can manipulate the color channels of the image.
nipulate the layers. Information is available in Layers on page 248. ‘Channels’
shows and can manipulate the color channels of the image.
Paths are an advanced method of selecting parts of an image. They can also be
used for drawing. ‘Paths’ shows the paths available for an image and provides
access to path functions. ‘Undo’ shows a limited history of modifications made to
the current image. Its use is described in Undoing Mistakes on page 248.
used for drawing. ‘Paths’ shows the paths available for an image and provides
access to path functions. ‘Undo’ shows a limited history of modifications made to
the current image. Its use is described in Undoing Mistakes on page 248.
The bottom portion of the window contains three tabs. With them, select the cur-
rent brush, gradient, and pattern.
rent brush, gradient, and pattern.
20.3
Getting Started in GIMP
20.3.1
Creating a New Image
To create a new image, select ‘File’ ➝ ‘New’ or press
Ctrl
-
N
. This opens a dia-
log in which to make settings for the new image. If desired, use ‘From Template’
to select a template on which to base the new image. The GIMP includes a num-
ber of templates, ranging from an A4 sheet of paper to a CD cover, from which to
choose. To create a custom template, select ‘File’ ➝ ‘Dialogs’ ➝ ‘Templates...’ and
use the controls offered by the window that opens.
to select a template on which to base the new image. The GIMP includes a num-
ber of templates, ranging from an A4 sheet of paper to a CD cover, from which to
choose. To create a custom template, select ‘File’ ➝ ‘Dialogs’ ➝ ‘Templates...’ and
use the controls offered by the window that opens.
In the ‘Image Size’ section, set the size of the image to create in pixels or another
unit. GIMP defaults use inches as the other unit. Click the unit to select another
unit from the list of available units. Changing the pixel size modifies the other
unit size and vice versa. The ratio between pixels and a unit is set in ‘Resolution’.
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.
unit. GIMP defaults use inches as the other unit. Click the unit to select another
unit from the list of available units. Changing the pixel size modifies the other
unit size and vice versa. The ratio between pixels and a unit is set in ‘Resolution’.
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 ‘Image Type’, select whether the image should be in color (‘RGB’) or
‘grayscale’. For detailed information about image types, see Image Modes on
page 249. Select the ‘Fill Type’ for the new image. ‘Foreground’ and ‘Background’
use the colors selected in the toolbox. ‘White’ uses a white background in the im-
age. ‘Transparent’ creates a clear image. Transparency is represented by a gray
checkerboard pattern. Enter a comment for the new image in ‘Image Comment’.
‘grayscale’. For detailed information about image types, see Image Modes on
page 249. Select the ‘Fill Type’ for the new image. ‘Foreground’ and ‘Background’
use the colors selected in the toolbox. ‘White’ uses a white background in the im-
age. ‘Transparent’ creates a clear image. Transparency is represented by a gray
checkerboard pattern. Enter a comment for the new image in ‘Image Comment’.
239
SUSE LINUX