Convenience Functions: xfce4-panel Reference Manual

## Convenience Functions Convenience Functions — Special purpose widgets and utilities |

## Functions

GtkWidget * | xfce_panel_create_button ()
GtkWidget * | xfce_panel_create_toggle_button ()
const gchar * | xfce_panel_get_channel_name ()
GdkPixbuf * | xfce_panel_pixbuf_from_source ()
GdkPixbuf * | xfce_panel_pixbuf_from_source_at_size ()
void | xfce_panel_set_image_from_source ()

## Includes

    #include <libxfce4panel/libxfce4panel.h>

## Description

This section describes a number of functions that were created to help developers of Xfce Panel plugins.

## Functions

### xfce_panel_create_button ()

    GtkWidget *
    xfce_panel_create_button (void);

Create regular GtkButton with a few properties set to be useful in the Xfce panel: Flat (`GTK_RELIEF_NONE`), no focus on click and minimal padding.

#### Returns

newly created GtkButton.

[transfer floating]

### xfce_panel_create_toggle_button ()

    GtkWidget *
    xfce_panel_create_toggle_button (void);

Create regular GtkToggleButton with a few properties set to be useful in Xfce panel: Flat (`GTK_RELIEF_NONE`), no focus on click and minimal padding.

#### Returns

newly created GtkToggleButton.

[transfer floating]

### xfce_panel_get_channel_name ()

    const gchar *
    xfce_panel_get_channel_name (void);

Function for the name of the Xfconf channel used by the panel. By default this returns "xfce4-panel", but you can override this value with the environment variable XFCE_PANEL_CHANNEL_NAME.

#### Returns

name of the Xfconf channel

See also: XFCE_PANEL_CHANNEL_NAME, xfce_panel_plugin_xfconf_channel_new and xfce_panel_plugin_get_property_base

Since: 4.8

### xfce_panel_pixbuf_from_source ()

    GdkPixbuf *
    xfce_panel_pixbuf_from_source (const gchar *source,
                                   GtkIconTheme *icon_theme,
                                   gint size);

See xfce_panel_pixbuf_from_source_at_size

#### Parameters

source | string that contains the location of an icon |
icon_theme | icon theme or `NULL` to use the default icon theme. | [allow-none]
size | size the icon that should be loaded |

#### Returns

a GdkPixbuf or `NULL` if nothing was found. The value should be released with g_object_unref when no longer used.

See also: XfcePanelImage.

[transfer full]

Since: 4.8

### xfce_panel_pixbuf_from_source_at_size ()

    GdkPixbuf *
    xfce_panel_pixbuf_from_source_at_size (const gchar *source,
                                           GtkIconTheme *icon_theme,
                                           gint dest_width,
                                           gint dest_height);

Try to load a pixbuf from a source string. The source could be an abolute path, an icon name or a filename that points to a file in the pixmaps directory.

This function is particularly usefull for loading names from the Icon key of desktop files.

The pixbuf is never bigger than `dest_width` and `dest_height` . If it is when loaded from the disk, the pixbuf is scaled preserving the aspect ratio.

#### Parameters

source | string that contains the location of an icon |
icon_theme | icon theme or `NULL` to use the default icon theme. | [allow-none]
dest_width | the maximum returned width of the GdkPixbuf |
dest_height | the maximum returned height of the GdkPixbuf |

#### Returns

a GdkPixbuf or `NULL` if nothing was found. The value should be released with g_object_unref when no longer used.

See also: XfcePanelImage.

[transfer full]

Since: 4.10

### xfce_panel_set_image_from_source ()

    void
    xfce_panel_set_image_from_source (GtkImage *image,
                                      const gchar *source,
                                      GtkIconTheme *icon_theme,
                                      gint size,
                                      gint scale);

See `xfce_panel_pixbuf_from_source_at_size()`

See also: XfcePanelImage

#### Parameters

image | GtkImage to be set |
source | string that contains the location of an icon |
icon_theme | icon theme or `NULL` to use the default icon theme. | [allow-none]
size | size the icon that should be loaded |
scale | desired scale (see `gtk_widget_get_scale_factor()`) |

Since: 4.17.4