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From GIMP-2.4, all brushes have a variable size.
9.1.
How to vary the height of a brush
You can get the brush size varying in three ways:
-
Using the Scale slider of the tool
that uses the brush. Pencil, Paintbrush, Eraser, Airbrush,
Clone, Heal, Perspective Clone, Blur/Sharpen and Dodge/Burn tools
have a slider to vary brush size.
-
By programming the mouse wheel:
-
In the main window of GIMP, click on
→ .
-
In the left column of the new window, select
→ .
-
You can see
Additional Input Controllers,
with two columns:
Available Controllers and
Active Controllers.
In the column
Active Controllers, double-click the
Main Mouse Wheel button.
-
Then, you see a new window:
Configure Input Controller.
In the left column Event,
click Scroll Up to get it highlighted.
-
Click the Edit button
(at the bottom middle of the list).
-
You can see the window
Select Controller Event Action.
Drop-down the
Tools item, by clicking the small
triangle on its left.
-
In the left column Action,
click Increase Brush Scale to highlight
it, then click the OK button.
-
Now, in front of
Scroll Up is display
tools-paint-brush-scale-increase.
-
Close the window.
-
With the same method, program
Scroll Down with
Decrease Brush Scale.
-
Don't forget to click the
OK button of the main window of
Preferences.
After these somewhat long explanations, you can use your mouse
wheel to vary size brush. For example, choose the pencil tool
with the “Circle” brush. Set the
pointer in the image window, use the mouse wheel, in the two
directions, you can see the “Circle” shrinking or
stretching.
-
You can program the “Up” and “Down”
arrow keys of the keyboard.
The method is similar to that of the mouse wheel. The only
differences are:
-
In the column
Active Controllers, double-click
Main Keyboard.
-
In the column Event, click
Cursor Up for the first key, and
Cursor Down for the second key.
-
Then, use the two keys (Up arrow and Down arrow) and the result
is the same as you got with the mouse wheel.
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