Difference between revisions of "GTK+"

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(Separate “configuration programs” section since the same programs seem to be used for themes selection and further configuration)
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GTK+, The GIMP Toolkit, was initially made by the [[GNU Project]] for [[Gimp]] but is now a very popular toolkit with bindings for many languages.  
 
GTK+, The GIMP Toolkit, was initially made by the [[GNU Project]] for [[Gimp]] but is now a very popular toolkit with bindings for many languages.  
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 +
== Configuration programs ==
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These GUI programs allow theme selection and at least customising of a font. They generally overwrite the ~/.gtkrc-2.0 file.
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* {{Package Official|lxappearance}}: A configuration tool from the [[LXDE]] project, which does not require any other parts of LXDE or other desktop environment. More flexible customisation than the other programs.
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* {{Package Official|gtk-chtheme}}
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* {{Package Official|gtk-theme-switch2}}
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* {{Package Official|gtk2_prefs}}
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Example install command:
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# pacman -S gtk-theme-switch2
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See also [[Uniform Look for QT and GTK Applications#How do I set styles for each toolkit?]]
  
 
== Themes ==
 
== Themes ==
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Some nice themes are in [[AUR]]. To install them, see [http://aur.archlinux.org/packages.php?ID=43501 gtk-smooth-engine].
 
Some nice themes are in [[AUR]]. To install them, see [http://aur.archlinux.org/packages.php?ID=43501 gtk-smooth-engine].
  
To change the theme you can use gtk-theme-switch:
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To change the theme you can use ''gtk-theme-switch2''. Run it with the 'switch' command.
# pacman -S gtk-theme-switch2
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Run it with the 'switch' command.
+
  
 
=== GTK+ 2.x ===
 
=== GTK+ 2.x ===
  
Major [[Desktop Environment]]s provide tools to configure the GTK+ theme, icons, font and font size. Alternatively, tools such as {{Package Official|lxappearance}}, {{Package Official|gtk-chtheme}}, {{Package Official|gtk-theme-switch2}} and {{Package Official|gtk2_prefs}} may be used. {{Package Official|lxappearance}} is a DE independent configuration tool from the LXDE project, which does not require any other parts of LXDE. Install one of these packages, as below:
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Major [[desktop environment]]s provide tools to configure the GTK+ theme, icons, font and font size. Alternatively, tools such as those mentioned above may be used.
# pacman -S lxappearance
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+
# pacman -S gtk-chtheme
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# pacman -S gtk-theme-switch2
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# pacman -S gtk2_prefs
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It is recommended to install some GTK+ 2 themes as well. The popular ''Clearlooks'' theme is included within the {{Package Official|gtk-engines}} package:
 
It is recommended to install some GTK+ 2 themes as well. The popular ''Clearlooks'' theme is included within the {{Package Official|gtk-engines}} package:
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If you have GTK+ and QT (KDE) applications on your desktop then you know that their looks do not blend well. If you wish to make your GTK+ styles match your QT styles please read [[Uniform Look for QT and GTK Applications]].
 
If you have GTK+ and QT (KDE) applications on your desktop then you know that their looks do not blend well. If you wish to make your GTK+ styles match your QT styles please read [[Uniform Look for QT and GTK Applications]].
  
== Configuration ==
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== Configuration file ==
  
 
{{Note|See the [http://library.gnome.org/devel/gtk/stable/GtkSettings.html GNOME library] for the full list of GTK configuration options.}}
 
{{Note|See the [http://library.gnome.org/devel/gtk/stable/GtkSettings.html GNOME library] for the full list of GTK configuration options.}}

Revision as of 14:00, 5 October 2011

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Summary help replacing me
This articles details theme configuration of GTK+ applications. GTK+ (GIMP Toolkit) is a cross-platform widget toolkit for creating graphical user interfaces. This article will explore the tools used to configure the GTK+ theme, style, icon, font and font size, and also detail manual configuration.
Related
Uniform Look for QT and GTK Applications
Qt
GNU Project

From the GTK+ website:

GTK+, or the GIMP Toolkit, is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off tools to complete application suites.

GTK+, The GIMP Toolkit, was initially made by the GNU Project for Gimp but is now a very popular toolkit with bindings for many languages.

Configuration programs

These GUI programs allow theme selection and at least customising of a font. They generally overwrite the ~/.gtkrc-2.0 file.

Example install command:

# pacman -S gtk-theme-switch2

See also Uniform Look for QT and GTK Applications#How do I set styles for each toolkit?

Themes

GTK+ 1.x

Old GTK+ 1 apps (like xmms) often do not look very nice at first. This is because they use ugly themes by default. To change this, you need to:

  1. download and install some nice themes
  2. change the theme

Some nice themes are in AUR. To install them, see gtk-smooth-engine.

To change the theme you can use gtk-theme-switch2. Run it with the 'switch' command.

GTK+ 2.x

Major desktop environments provide tools to configure the GTK+ theme, icons, font and font size. Alternatively, tools such as those mentioned above may be used.

It is recommended to install some GTK+ 2 themes as well. The popular Clearlooks theme is included within the Template:Package Official package:

# pacman -S gtk-engines

Further themes can be found in AUR:

Alternatively, GTK+ settings can be configured manually by editing Template:Filename. A list of GTK+ settings can be found in the gnome library. To manually change the GTK+ theme, icons, font and font size, add the following to Template:Filename:

Template:File

For example: Template:File

Note: The above example requires the packages Template:Package Official, Template:Package Official, Template:Package Official and murrine-themes-collection (from AUR).

GTK+ 3.x

If you use GNOME 3 DE, the theme can be changed with gnome-tweak-tool. Install with

# pacman -S gnome-tweak-tool

If you use a GTK+ 2.x based DE, like Xfce, LXDE, gnome-tweak-tool won't work; see FS#23633. You need to install librsvg

# pacman -S librsvg

and set your theme manually in Template:Filename (this is usually Template:Filename. An example Template:Filename file: Template:File After this, you need to set the same theme in your DE's appearance configuration tool. There are only a few themes which provide a uniform look for GTK+ 3.x and GTK+ 2.x apps. A few examples:

  1. Adwaita for GTK+ 3 and Advaicium for GTK+ 2
  2. Newlooks for GKT+ 3 and Clearlooks for GTK+ 2
  3. Zukitwo
  4. Elegant Brit
  5. Atolm
  6. Hope

Note: There probably are other themes. Some of these themes are available in AUR. Also, some of them are not usable as is for displaying a GTK+ 2.x panel (light text over light background), so you need to use the provided panel background.

GTK+ and QT

If you have GTK+ and QT (KDE) applications on your desktop then you know that their looks do not blend well. If you wish to make your GTK+ styles match your QT styles please read Uniform Look for QT and GTK Applications.

Configuration file

Note: See the GNOME library for the full list of GTK configuration options.

The purpose of this section is to collect GTK configuration settings which can e.g. be used within Template:Codeline.

Enabling Customizable Keyboard Shortcuts

You can customize your GTK applications' keyboard shortcuts (those are called accelerators in GTK terminology) by hovering your mouse over a menu item and pressing your desired key combination. However, this feature is disabled by default. To enable it, set

gtk-can-change-accels = 1

Speed up your GNOME menu

This setting controls the delay between you pointing the mouse at a menu and that menu opening in GNOME. Change this to a setting you prefer. I guess the number is in milliseconds, e.g. 250 being a quarter of a second.

gtk-menu-popup-delay = 0

Reduce widget sizes

If you have a small screen or you just do not like big icons and widgets, you can resize things easily. To have icons without text in toolbars, use

gtk-toolbar-style = GTK_TOOLBAR_ICONS

To use smaller icons, use a line like this:

gtk-icon-sizes = "panel-menu=16,16:panel=16,16:gtk-menu=16,16:gtk-large-toolbar=16,16\
:gtk-small-toolbar=16,16:gtk-button=16,16"

Or to remove icons from buttons completely:

gtk-button-images = 0

You can also remove icons from menus:

gtk-menu-images = 0

There is some more tweaking to do in your themes gtkrc like explained here and there's another theme that does it all.

Compiling GTK+ programs

When writing a start-from-scratch GTK+ program with C, it's necessary to add CFLAGS for gcc (the code was adopted from ubuntu forum):

gcc -g -Wall `pkg-config --cflags --libs gtk+-2.0` -o base base.c

-g and -Wall parameters are not necessary since they are only for verbose debugging outputs. You may try out the official Hello World example provided by the gtk.org.

Resources