Quelle gtkfontchooser.c
Sprache: C
/* GTK - The GIMP Toolkit
* gtkfontchooser . c - Abstract interface for font file selectors GUIs
*
* Copyright ( C ) 2006 , Emmanuele Bassi
* Copyright ( C ) 2011 Alberto Ruiz < aruiz @ gnome . org >
*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 of the License , or ( at your option ) any later version .
*
* This library is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library . If not , see < http : //www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkfontchooser.h"
#include "gtkfontchooserprivate.h"
#include "gtktypebuiltins.h"
#include "gtkprivate.h"
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
/**
* GtkFontChooser :
*
* ` GtkFontChooser ` is an interface that can be implemented by widgets
* for choosing fonts .
*
* In GTK , the main objects that implement this interface are
* [ class @ Gtk . FontChooserWidget ] , [ class @ Gtk . FontChooserDialog ] and
* [ class @ Gtk . FontButton ] .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
enum
{
SIGNAL_FONT_ACTIVATED,
LAST_SIGNAL
};
static guint chooser_signals[LAST_SIGNAL];
typedef GtkFontChooserIface GtkFontChooserInterface;
G_DEFINE_INTERFACE (GtkFontChooser, gtk_font_chooser, G_TYPE_OBJECT);
static void
gtk_font_chooser_default_init (GtkFontChooserInterface *iface)
{
/**
* GtkFontChooser : font :
*
* The font description as a string , e . g . " Sans Italic 12 " .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_string ("font" , NULL, NULL,
GTK_FONT_CHOOSER_DEFAULT_FONT_NAME,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
/**
* GtkFontChooser : font - desc :
*
* The font description as a ` PangoFontDescription ` .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_boxed ("font-desc" , NULL, NULL,
PANGO_TYPE_FONT_DESCRIPTION,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
/**
* GtkFontChooser : preview - text :
*
* The string with which to preview the font .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_string ("preview-text" , NULL, NULL,
pango_language_get_sample_string (NULL),
G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
/**
* GtkFontChooser : show - preview - entry :
*
* Whether to show an entry to change the preview text .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_boolean ("show-preview-entry" , NULL, NULL,
TRUE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontChooser : level :
*
* The level of granularity to offer for selecting fonts .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_flags ("level" , NULL, NULL,
GTK_TYPE_FONT_CHOOSER_LEVEL,
GTK_FONT_CHOOSER_LEVEL_FAMILY |
GTK_FONT_CHOOSER_LEVEL_STYLE |
GTK_FONT_CHOOSER_LEVEL_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontChooser : font - features :
*
* The selected font features .
*
* The format of the string is compatible with
* CSS and with Pango attributes .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_string ("font-features" , NULL, NULL,
"" ,
G_PARAM_READABLE | G_PARAM_STATIC_NAME));
/**
* GtkFontChooser : language :
*
* The language for which the font features were selected .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
g_object_interface_install_property
(iface,
g_param_spec_string ("language" , NULL, NULL,
"" ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkFontChooser : : font - activated :
* @ self : the object which received the signal
* @ fontname : the font name
*
* 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 : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ] instead
*/
chooser_signals[SIGNAL_FONT_ACTIVATED] =
g_signal_new (I_("font-activated" ),
GTK_TYPE_FONT_CHOOSER,
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkFontChooserIface, font_activated),
NULL, NULL,
NULL,
G_TYPE_NONE,
1 , G_TYPE_STRING);
}
/**
* gtk_font_chooser_get_font_family :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the ` PangoFontFamily ` representing the selected font family .
*
* Font families are a collection of font faces .
*
* If the selected font is not installed , returns % NULL .
*
* Returns : ( nullable ) ( transfer none ) : A ` PangoFontFamily ` representing the
* selected font family
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
PangoFontFamily *
gtk_font_chooser_get_font_family (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
return GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->get_font_family (fontchooser);
}
/**
* gtk_font_chooser_get_font_face :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the ` PangoFontFace ` representing the selected font group
* details ( i . e . family , slant , weight , width , etc ) .
*
* If the selected font is not installed , returns % NULL .
*
* Returns : ( nullable ) ( transfer none ) : A ` PangoFontFace ` representing the
* selected font group details
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
PangoFontFace *
gtk_font_chooser_get_font_face (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
return GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->get_font_face (fontchooser);
}
/**
* gtk_font_chooser_get_font_size :
* @ fontchooser : a ` GtkFontChooser `
*
* The selected font size .
*
* Returns : A n integer representing the selected font size ,
* or - 1 if no font size is selected .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
int
gtk_font_chooser_get_font_size (GtkFontChooser *fontchooser)
{
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), -1 );
return GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->get_font_size (fontchooser);
}
/**
* gtk_font_chooser_get_font :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the currently - selected font name .
*
* Note that this can be a different string than what you set with
* [ method @ Gtk . FontChooser . 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 [ method @ Pango . FontDescription . equal ] if you want to compare two
* font descriptions .
*
* Returns : ( nullable ) ( transfer full ) : A string with the name
* of the current font
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
char *
gtk_font_chooser_get_font (GtkFontChooser *fontchooser)
{
char *fontname;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
g_object_get (fontchooser, "font" , &fontname, NULL);
return fontname;
}
/**
* gtk_font_chooser_set_font :
* @ fontchooser : a ` GtkFontChooser `
* @ fontname : a font name like “ Helvetica 12 ” or “ Times Bold 18 ”
*
* Sets the currently - selected font .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_font (GtkFontChooser *fontchooser,
const char *fontname)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_return_if_fail (fontname != NULL);
g_object_set (fontchooser, "font" , fontname, NULL);
}
/**
* gtk_font_chooser_get_font_desc :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the currently - selected font .
*
* Note that this can be a different string than what you set with
* [ method @ Gtk . FontChooser . 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 [ method @ Pango . FontDescription . equal ] if you want to compare two
* font descriptions .
*
* Returns : ( nullable ) ( transfer full ) : A ` PangoFontDescription ` for the
* current font
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
PangoFontDescription *
gtk_font_chooser_get_font_desc (GtkFontChooser *fontchooser)
{
PangoFontDescription *font_desc;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
g_object_get (fontchooser, "font-desc" , &font_desc, NULL);
return font_desc;
}
/**
* gtk_font_chooser_set_font_desc :
* @ fontchooser : a ` GtkFontChooser `
* @ font_desc : a ` PangoFontDescription `
*
* Sets the currently - selected font from @ font_desc .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_font_desc (GtkFontChooser *fontchooser,
const PangoFontDescription *font_desc)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_return_if_fail (font_desc != NULL);
g_object_set (fontchooser, "font-desc" , font_desc, NULL);
}
/**
* gtk_font_chooser_get_preview_text :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the text displayed in the preview area .
*
* Returns : ( transfer full ) : the text displayed in the preview area
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
char *
gtk_font_chooser_get_preview_text (GtkFontChooser *fontchooser)
{
char *text;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
g_object_get (fontchooser, "preview-text" , &text, NULL);
return text;
}
/**
* gtk_font_chooser_set_preview_text :
* @ fontchooser : a ` GtkFontChooser `
* @ text : ( transfer none ) : the text to display in the preview area
*
* Sets the text displayed in the preview area .
*
* The @ text is used to show how the selected font looks .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_preview_text (GtkFontChooser *fontchooser,
const char *text)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_return_if_fail (text != NULL);
g_object_set (fontchooser, "preview-text" , text, NULL);
}
/**
* gtk_font_chooser_get_show_preview_entry :
* @ fontchooser : a ` GtkFontChooser `
*
* Returns whether the preview entry is shown or not .
*
* Returns : % TRUE if the preview entry is shown or % FALSE if it is hidden .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
gboolean
gtk_font_chooser_get_show_preview_entry (GtkFontChooser *fontchooser)
{
gboolean show;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), FALSE );
g_object_get (fontchooser, "show-preview-entry" , &show, NULL);
return show;
}
/**
* gtk_font_chooser_set_show_preview_entry :
* @ fontchooser : a ` GtkFontChooser `
* @ show_preview_entry : whether to show the editable preview entry or not
*
* Shows or hides the editable preview entry .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser,
gboolean show_preview_entry)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
show_preview_entry = show_preview_entry != FALSE ;
g_object_set (fontchooser, "show-preview-entry" , show_preview_entry, NULL);
}
/**
* gtk_font_chooser_set_filter_func :
* @ fontchooser : a ` GtkFontChooser `
* @ filter : ( nullable ) ( scope notified ) ( closure user_data ) ( destroy destroy ) : a ` GtkFontFilterFunc `
* @ user_data : data to pass to @ filter
* @ destroy : function to call to free @ data when it is no longer needed
*
* Adds a filter function that decides which fonts to display
* in the font chooser .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_filter_func (GtkFontChooser *fontchooser,
GtkFontFilterFunc filter,
gpointer user_data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->set_filter_func (fontchooser,
filter,
user_data,
destroy);
}
void
_gtk_font_chooser_font_activated (GtkFontChooser *chooser,
const char *fontname)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (chooser));
g_signal_emit (chooser, chooser_signals[SIGNAL_FONT_ACTIVATED], 0 , fontname);
}
/**
* gtk_font_chooser_set_font_map :
* @ fontchooser : a ` GtkFontChooser `
* @ fontmap : ( nullable ) : a ` PangoFontMap `
*
* 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 .
*
* ` ` ` 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 :
*
* ` ` ` c
* context = gtk_widget_get_pango_context ( label ) ;
* pango_context_set_font_map ( context , fontmap ) ;
* ` ` `
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_font_map (GtkFontChooser *fontchooser,
PangoFontMap *fontmap)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_return_if_fail (fontmap == NULL || PANGO_IS_FONT_MAP (fontmap));
if (GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->set_font_map)
GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->set_font_map (fontchooser, fontmap);
}
/**
* gtk_font_chooser_get_font_map :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the custom font map of this font chooser widget ,
* or % NULL if it does not have one .
*
* Returns : ( nullable ) ( transfer full ) : a ` PangoFontMap `
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
PangoFontMap *
gtk_font_chooser_get_font_map (GtkFontChooser *fontchooser)
{
PangoFontMap *fontmap = NULL;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
if (GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->get_font_map)
fontmap = GTK_FONT_CHOOSER_GET_IFACE (fontchooser)->get_font_map (fontchooser);
return fontmap;
}
/**
* gtk_font_chooser_set_level :
* @ fontchooser : a ` GtkFontChooser `
* @ level : the desired level of granularity
*
* Sets the desired level of granularity for selecting fonts .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_level (GtkFontChooser *fontchooser,
GtkFontChooserLevel level)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_object_set (fontchooser, "level" , level, NULL);
}
/**
* gtk_font_chooser_get_level :
* @ fontchooser : a ` GtkFontChooser `
*
* Returns the current level of granularity for selecting fonts .
*
* Returns : the current granularity level
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
GtkFontChooserLevel
gtk_font_chooser_get_level (GtkFontChooser *fontchooser)
{
GtkFontChooserLevel level;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), 0 );
g_object_get (fontchooser, "level" , &level, NULL);
return level;
}
/**
* gtk_font_chooser_get_font_features :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the currently - selected font features .
*
* The format of the returned string is compatible with the
* [ CSS font - feature - settings property ] ( https : //www.w3.org/TR/css-fonts-4/#font-rend-desc).
* It can be passed to [ func @ Pango . AttrFontFeatures . new ] .
*
* Returns : the currently selected font features
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
char *
gtk_font_chooser_get_font_features (GtkFontChooser *fontchooser)
{
char *text;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
g_object_get (fontchooser, "font-features" , &text, NULL);
return text;
}
/**
* gtk_font_chooser_get_language :
* @ fontchooser : a ` GtkFontChooser `
*
* Gets the language that is used for font features .
*
* Returns : the currently selected language
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
char *
gtk_font_chooser_get_language (GtkFontChooser *fontchooser)
{
char *text;
g_return_val_if_fail (GTK_IS_FONT_CHOOSER (fontchooser), NULL);
g_object_get (fontchooser, "language" , &text, NULL);
return text;
}
/**
* gtk_font_chooser_set_language :
* @ fontchooser : a ` GtkFontChooser `
* @ language : a language
*
* Sets the language to use for font features .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . FontDialog ] and [ class @ Gtk . FontDialogButton ]
* instead
*/
void
gtk_font_chooser_set_language (GtkFontChooser *fontchooser,
const char *language)
{
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
g_object_set (fontchooser, "language" , language, NULL);
}
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2026-07-09