Novell LINUX ENTERPRISE DESKTOP 10 SP1 - GNOME 23-05-2007, Руководство пользователя, Страница: 210 / 280

210 SUSE Linux Enterprise Desktop 10 SP1 GNOME User Guide
no
vd
ocx
(e
n)
6 Ap
ril 20
07
The arrow button to the right of Current enables saving a number of possible colors. Click the arrow
to copy the current color to the history. A color can then be selected by clicking it in the history. A
color can also be selected by directly entering its hexadecimal color code in
HTML Notation .
The color selector defaults to selecting a color by hue, which is usually easiest for a new user. To
select by saturation, value, red, green, or blue, select the corresponding radio button to the right. The
sliders and number fields can also be used to modify the currently selected color. Experiment a bit to
find out what works best for you.
When the desired color is shown in Current , click OK . To restore the original values shown when
the dialog was opened, click Reset . To abort changing the color, click Cancel .
To select a color that already exists in your image, use the color picker tool, the icon for which
resembles an eye dropper. With the tool options, set whether the foreground or background color
should be selected. Then click a point in the image that shows the desired color. When the color is
right, click
Close to close the tool's dialog.
Painting and Erasing
To paint and erase, use the tools from the toolbox. There are a number of options available to fine-
tune each tool. Pressure sensitivity options apply only when a pressure-sensitive graphics tablet is
used.
The pencil, brush, airbrush, and eraser work much like their real-life equivalents. The ink tool works
like a calligraphy pen. Paint by clicking and dragging. The bucket fill is a method of coloring areas
of an image. It fills based on color boundaries in the image. Adjusting the threshold modifies its
sensitivity to color changes.
Adding Text
With the text tool, easily add text to an image. With the tool options, select the desired font, font
size, color, justification, indent, and line spacing. Then click a starting point in the image. A small
dialog opens in which to enter your text. Enter single or multiple lines of text then press
Close .
The text tool creates text on a special layer. To work with the image after adding text, read “Layers”
on page 211 . When the text layer is active, it is possible to modify the text by clicking in the image
to reopen the entry dialog. Change the settings by modifying the tool options.
Retouching Images—The Clone Tool
The clone tool is ideal for retouching images. It enables you to paint in an image using information
from another part of the image. If desired, it can instead take information from a pattern.
When retouching, it is usually a good idea to use a small brush with soft edges. In this way, the
modifications can blend better with the original image.
To select the source point in the image, press and hold Ctrl while clicking the desired source point.
Then paint with the tool as usual. When you move the cursor while painting, the source point,
marked by a cross, moves as well. If the
Alignment is set to Non Aligned (the default setting), the
source resets to the original when you release the left mouse button.