3.2. Dialog Stopy

Obrázek 15.33. Dialog Stopy

Dialog Stopy

The Brushes dialog is used to select a brush, for use with painting tools: see the Brushes section for basic information on brushes and how they are used in GIMP. The dialog also gives you access to several functions for manipulating brushes. You can select a brush by clicking on it in the list: it will then be shown in the Brush/Pattern/Gradient area of the Toolbox. GIMP comes now with 56 brushes, different from each other, because the size, the ratio and the angle of every brush can be set in the tool options dialog. You can also create custom brushes using the Brush Editor, or by saving images in a special brush file format.

3.2.1. Aktivace dialogu

The Brushes dialog is a dockable dialog; see the section 2.3 – „Dokování dialogů“ for help on manipulating it.

You can access it:

  • from the Toolbox, by clicking on the brush symbol in the Brush/Pattern/Gradient area (if you have checked the Show active brush, pattern and gradient option in the toolbox preferences).

  • From an image menu: WindowsDockable DialogsBrushes;

  • from the Tab menu in any dockable dialog by clicking on and selecting Add TabBrushes.

  • from the Tool Options dialog for any of the paint tools, by clicking on the Brush icon button, you get a popup with similar functionality that permits you to quickly choose a brush from the list; if you click on the button present on the right bottom of the popup, you open the real brush dialog.

    The simplified Brushes dialog

    This window has five buttons, clearly explained by help pop-ups:

    • Smaller previews

    • Larger previews

    • View as list

    • View as Grid

    • Otevřít dialog výběru stopy

    Note that, depending on your Preferences, a brush selected with the popup may only apply to the currently active tool, not to other paint tools. See the Tool Option Preferences section for more information.

3.2.2. Using the Brushes dialog

3.2.2.1. Grid/List mode

In the Tab menu, you can choose between View as Grid and View as List. In Grid mode, the brush shapes are laid out in a rectangular array, making it easy to see many at once and find the one you are looking for. In List mode, the shapes are lined up in a list, with the names beside them.

In the Tab menu, the option Preview Size allows you to adapt the size of brush previews to your liking.

Obrázek 15.34. Grid/List view

Grid/List view

View as Grid

Grid/List view

View as List


Grid mode

V horní části dialogu je zobrazeno jméno aktivní stopy a její velikost v pixelech.

In the center a grid view of all available brushes appears, with the currently selected one outlined.

režim seznamu

Dialog Stopy pracuje v režimu seznamu stejně, jako v režimu mřížky, s jednou výjimkou:

If you double-click on the name of a brush, you will be able to edit it. Note, however, that you are only allowed to change the names of brushes that you have created or installed yourself, not the ones that come pre-installed with GIMP. If you try to rename a pre-installed brush, you will be able to edit the name, but as soon as you hit return or click somewhere else, the name will revert to its original value. It is a general rule that you cannot alter the resources that GIMP pre-installs for you: brushes, patterns, gradients, etc; only ones that you create yourself.

3.2.2.2. Brush previews

Obrázek 15.35. The Brushes dialog

The „Brushes“ dialog

When you click on a brush preview, it becomes the current brush and it gets selected in the brush area of Toolbox and the Brush option of painting tools. When you double-click on a brush preview, you will activate the Brush Editor. You can also click on buttons at the bottom of the dialog to perform various actions.

Meaning of the small symbols at the bottom right corner of every brush preview:

  • A blue corner is for brushes in normal size. You can duplicate them.

  • A small cross means that the brush preview is in a reduced size. You can get it in normal size by maintaining left click on it.

  • A red corner is for animated brushes. If you maintain left click on the thumbnail, the animation is played.

3.2.2.3. Tagging

You can use tags to reorganize the brushes display. See 3.6 – „Tagging“.

3.2.2.4. Buttons at the bottom

Funkce těchto tlačítek jsou dostupné také z kontextového menu dialogu Stopy, které můžete vyvolat kliknutím pravého tlačítka myši kdekoliv v seznamu (či mřížce) stop, nebo volbou první položky Menu Stopy z nabídky karty dialogu Stopy.

Rozestup

This slider lets you set the distance between consecutive brush marks when you trace out a brushstroke with the mouse pointer. Spacing is a percentage of the brush width.

Upravit stopu

This activates the Brush Editor. Pressing the button will open the Editor for any brush. It only works, however, for parametric brushes: for any other type, the Editor will show you the brush but not allow you to do anything with it.

Nová stopa

Vytvoří novou parametrickou stopu a otevře Editor stop, ve kterém ji můžete nastavit. Nová stopa bude automaticky uložena ve vašem osobním adresáři brushes.

Duplikovat stopu

Toto tlačítko je aktivní pouze tehdy, pokud je právě vybraná parametrická stopa. Jeho stisknutím se parametrická stopa zduplikuje a kopie se otevře v editoru stop. Výsledek je automaticky uložen do vašeho osobního adresáře brushes.

Odstranit stopu

This option is active for parametric brushes only. This removes all traces of the brush, both from the dialog and the folder where its file is stored, if you have permission to do so. It asks for confirmation before doing anything.

Aktualizovat stopy

If you add brushes to your personal brushes folder or any other folder in your brush search path, by some means other than the Brush Editor, this button causes the list to be reloaded, so that the new entries will be available in the dialog.

Open brush as image

New option in GIMP-2.10.10: you can edit this image, copy it and Edit>Paste as>New brush. This is different from 3.2.3 – „Editor stop“ that allows to modify an existing brush.

The functions performed by these buttons can also be accessed from the dialog pop-up menu, activated by right-clicking anywhere in the brush grid/list, or by choosing the top item, Brushes menu, from the dialog Tab menu.

3.2.2.5. The Brushes context menu

Obrázek 15.36. The Brushes context menu

The „Brushes“ context menu


Right clicking on a brush preview opens a context menu. This menu has now some options which let you create elliptical and rectangular brushes. These brushes can be feathered, but they are not parametric brushes.

The other commands of this submenu are described with the Buttons, except for Copy Brush Location which allows to copy brush path into clipboard. By using the FileOpen Location, command, you can open the brush as a new image.

3.2.3. Editor stop

Obrázek 15.37. The Brushes Editor dialog

The „Brushes“ Editor dialog

The Brush Editor, activated for a new brush.


The Brush Editor allows you to view the brush parameters of a brush supplied by GIMP, and you can't change them. You can also create a custom brush: click on the New Brush button to activate the functions of the brush editor; you can select a geometrical shape, a circle, a square or a diamond. This editor has several elements:

The dialog bar: As with all dialog windows, a click on the small triangle prompts a menu allowing you to set the aspect of the Brush Editor.

The title bar: To give a name to your brush.

The preview area: Brush changes appear in real time in this preview.

Settings:

Tvar

A circle, a square and a diamond are available. You will modify them by using the following options:

Poloměr

Distance between brush center and edge, in the width direction. A square with a 10 pixels radius will have a 20 pixels side. A diamond with a 5 pixels radius will have a 10 pixels width.

Paprsky

This parameter is useful only for square and diamond. With a square, increasing spikes results in a polygon. With a diamond, you get a star.

Hardness

This parameter controls the feathering of the brush border. Value = 1.00 gives a brush with a sharp border (0.00-1.00).

Aspect ratio

This parameter controls the brush Width/Height ratio. A diamond with a 5 pixels radius and an Aspect Ratio = 2, will be flattened with a 10 pixels width and a 5 pixels height (1.0-20.0).

Úhel

This angle is the angle between the brush width direction, which is normally horizontal, and the horizontal direction, counter-clock-wise. When this value increases, the brush width turns counter-clock-wise (0° to 180°).

Rozestup

When the brush draws a line, it actually stamps the brush icon repeatedly. If brush stamps are very close, you get the impression of a solid line: you get that with Spacing = 1. (1.00 to 200.0).

3.2.4. The Clipboard Brush

When you use the Copy or Cut command on an image or a selection of it, a copy appears as a new brush in the upper left corner of the Brushes dialog. This brush will persist until you use the Copy command again. It disappears when you close GIMP.

Obrázek 15.38. A new Clipboard Brush

A new „Clipboard Brush“

[Poznámka] Poznámka

You can save this clipboard brush by using the EditPaste asNew brush as soon as it appears in the Brushes dialog. (See 3.12.4 – „Paste as New Brush“.)