Trait gtk4::prelude::FontChooserExt

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pub trait FontChooserExt: 'static {

Show 27 methods    // Required methods
    fn font(&self) -> Option<GString>;
    fn font_desc(&self) -> Option<FontDescription>;
    fn font_face(&self) -> Option<FontFace>;
    fn font_family(&self) -> Option<FontFamily>;
    fn font_features(&self) -> GString;
    fn font_map(&self) -> Option<FontMap>;
    fn font_size(&self) -> i32;
    fn language(&self) -> GString;
    fn level(&self) -> FontChooserLevel;
    fn preview_text(&self) -> GString;
    fn shows_preview_entry(&self) -> bool;
    fn set_filter_func<P: Fn(&FontFamily, &FontFace) -> bool + 'static>(
        &self,
        filter: P
    );
    fn set_font(&self, fontname: &str);
    fn set_font_desc(&self, font_desc: &FontDescription);
    fn set_font_map(&self, fontmap: Option<&impl IsA<FontMap>>);
    fn set_language(&self, language: &str);
    fn set_level(&self, level: FontChooserLevel);
    fn set_preview_text(&self, text: &str);
    fn set_show_preview_entry(&self, show_preview_entry: bool);
    fn connect_font_activated<F: Fn(&Self, &str) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_font_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_font_desc_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_font_features_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_language_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_level_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_preview_text_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_show_preview_entry_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;

}
Expand description

Trait containing all FontChooser methods.

Implementors

FontButton, FontChooserDialog, FontChooserWidget, FontChooser

Required Methods§

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fn font(&self) -> Option<GString>

Gets the currently-selected font name.

Note that this can be a different string than what you set with set_font(), as the font chooser widget may normalize font names and thus return a string with a different structure. For example, “Helvetica Italic Bold 12” could be normalized to “Helvetica Bold Italic 12”.

Use Pango::FontDescription::equal() if you want to compare two font descriptions.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

A string with the name of the current font

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fn font_desc(&self) -> Option<FontDescription>

Gets the currently-selected font.

Note that this can be a different string than what you set with set_font(), as the font chooser widget may normalize font names and thus return a string with a different structure. For example, “Helvetica Italic Bold 12” could be normalized to “Helvetica Bold Italic 12”.

Use Pango::FontDescription::equal() if you want to compare two font descriptions.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

A pango::FontDescription for the current font

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fn font_face(&self) -> Option<FontFace>

Gets the pango::FontFace representing the selected font group details (i.e. family, slant, weight, width, etc).

If the selected font is not installed, returns None.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

A pango::FontFace representing the selected font group details

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fn font_family(&self) -> Option<FontFamily>

Gets the pango::FontFamily representing the selected font family.

Font families are a collection of font faces.

If the selected font is not installed, returns None.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

A pango::FontFamily representing the selected font family

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fn font_features(&self) -> GString

Gets the currently-selected font features.

The format of the returned string is compatible with the CSS font-feature-settings property. It can be passed to Pango::AttrFontFeatures::new().

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

the currently selected font features

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fn font_map(&self) -> Option<FontMap>

Gets the custom font map of this font chooser widget, or None if it does not have one.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

a pango::FontMap

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fn font_size(&self) -> i32

The selected font size.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

A n integer representing the selected font size, or -1 if no font size is selected.

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fn language(&self) -> GString

Gets the language that is used for font features.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

the currently selected language

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fn level(&self) -> FontChooserLevel

Returns the current level of granularity for selecting fonts.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

the current granularity level

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fn preview_text(&self) -> GString

Gets the text displayed in the preview area.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

the text displayed in the preview area

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fn shows_preview_entry(&self) -> bool

Returns whether the preview entry is shown or not.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

Returns

true if the preview entry is shown or false if it is hidden.

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fn set_filter_func<P: Fn(&FontFamily, &FontFace) -> bool + 'static>( &self, filter: P )

Adds a filter function that decides which fonts to display in the font chooser.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

filter

a GtkFontFilterFunc

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fn set_font(&self, fontname: &str)

Sets the currently-selected font.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

fontname

a font name like “Helvetica 12” or “Times Bold 18”

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fn set_font_desc(&self, font_desc: &FontDescription)

Sets the currently-selected font from @font_desc.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

font_desc

a pango::FontDescription

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fn set_font_map(&self, fontmap: Option<&impl IsA<FontMap>>)

Sets a custom font map to use for this font chooser widget.

A custom font map can be used to present application-specific fonts instead of or in addition to the normal system fonts.

⚠️ The following code is in c ⚠️

FcConfig *config;
PangoFontMap *fontmap;

config = FcInitLoadConfigAndFonts ();
FcConfigAppFontAddFile (config, my_app_font_file);

fontmap = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
pango_fc_font_map_set_config (PANGO_FC_FONT_MAP (fontmap), config);

gtk_font_chooser_set_font_map (font_chooser, fontmap);

Note that other GTK widgets will only be able to use the application-specific font if it is present in the font map they use:

⚠️ The following code is in c ⚠️

context = gtk_widget_get_pango_context (label);
pango_context_set_font_map (context, fontmap);
Deprecated since 4.10

Use FontDialog and FontDialogButton instead

fontmap

a pango::FontMap

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fn set_language(&self, language: &str)

Sets the language to use for font features.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

language

a language

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fn set_level(&self, level: FontChooserLevel)

Sets the desired level of granularity for selecting fonts.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

level

the desired level of granularity

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fn set_preview_text(&self, text: &str)

Sets the text displayed in the preview area.

The @text is used to show how the selected font looks.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

text

the text to display in the preview area

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fn set_show_preview_entry(&self, show_preview_entry: bool)

Shows or hides the editable preview entry.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

show_preview_entry

whether to show the editable preview entry or not

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fn connect_font_activated<F: Fn(&Self, &str) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when a font is activated.

This usually happens when the user double clicks an item, or an item is selected and the user presses one of the keys Space, Shift+Space, Return or Enter.

Deprecated since 4.10

Use FontDialog and FontDialogButton instead

fontname

the font name

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fn connect_font_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_font_desc_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_font_features_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_language_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_level_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_preview_text_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_show_preview_entry_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

Implementors§