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/* Pango
*
* Copyright (C) 2022 Matthias Clasen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gio/gio.h>
#include "pango-generic-family-private.h"
#include "pango-impl-utils.h"
#include "pango-hbface-private.h"
#include "pango-font-private.h"
/**
* PangoGenericFamily:
*
* An implementation of `PangoFontFamily`
* that provides faces from other families.
*
* `PangoGenericFamily can be used to e.g. assemble a
* generic 'sans-serif' family from a number of other
* font families.
*/
/* {{{ PangoFontFamily implementation */
struct _PangoGenericFamilyClass
{
PangoFontFamilyClass parent_class;
};
G_DEFINE_TYPE (PangoGenericFamily, pango_generic_family, PANGO_TYPE_FONT_FAMILY)
static void
pango_generic_family_init (PangoGenericFamily *self)
{
self->families = g_ptr_array_new_with_free_func (g_object_unref);
}
static void
pango_generic_family_finalize (GObject *object)
{
PangoGenericFamily *self = PANGO_GENERIC_FAMILY (object);
g_free (self->name);
g_ptr_array_unref (self->families);
G_OBJECT_CLASS (pango_generic_family_parent_class)->finalize (object);
}
static const char *
pango_generic_family_get_name (PangoFontFamily *family)
{
PangoGenericFamily *self = PANGO_GENERIC_FAMILY (family);
return self->name;
}
static gboolean
pango_generic_family_is_monospace (PangoFontFamily *family)
{
return FALSE;
}
static gboolean
pango_generic_family_is_variable (PangoFontFamily *family)
{
return FALSE;
}
static void
pango_generic_family_class_init (PangoGenericFamilyClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
PangoFontFamilyClass *family_class = PANGO_FONT_FAMILY_CLASS (class);
object_class->finalize = pango_generic_family_finalize;
family_class->get_name = pango_generic_family_get_name;
family_class->is_monospace = pango_generic_family_is_monospace;
family_class->is_variable = pango_generic_family_is_variable;
}
/* }}} */
/* {{{ Private API */
/*< private >
* pango_generic_family_set_font_map:
* @self: a `PangoGenericFamily`
* @map: (nullable): a `PangoFontMap`
*
* Sets the map of @self.
*/
void
pango_generic_family_set_font_map (PangoGenericFamily *self,
PangoFontMap *map)
{
if (self->map)
g_object_remove_weak_pointer (G_OBJECT (self->map), (gpointer *)&self->map);
self->map = map;
if (self->map)
g_object_add_weak_pointer (G_OBJECT (self->map), (gpointer *)&self->map);
}
/*< private >
* pango_generic_family_find_face:
* @family: a `PangoGenericFamily`
* @description: `PangoFontDescription` to match
* @language: (nullable): `PangoLanguage` to support
* @wc: a Unicode character, or 0 to ignore
*
* Finds the face that best matches the font description while
* also supporting the given language and character, from the first
* family in @family that has any matching faces.
*
* Returns: (transfer none) (nullable): the face
*/
PangoFontFace *
pango_generic_family_find_face (PangoGenericFamily *self,
PangoFontDescription *description,
PangoLanguage *language,
gunichar wc)
{
PangoFontFace *face = NULL;
for (int i = 0; i < self->families->len; i++)
{
PangoHbFamily *family = g_ptr_array_index (self->families, i);
face = pango_hb_family_find_face (family, description, language, wc);
if (face)
break;
}
return face;
}
/* }}} */
/* {{{ Public API */
/**
* pango_generic_family_new:
* @name: the family name
*
* Creates a new `PangoGenericFamily`.
*
* A generic family does not contain faces, but will return
* faces from other families that match a given query.
*
* Returns: a newly created `PangoGenericFamily`
*
* Since: 1.52
*/
PangoGenericFamily *
pango_generic_family_new (const char *name)
{
PangoGenericFamily *self;
g_return_val_if_fail (name != NULL, NULL);
self = g_object_new (PANGO_TYPE_GENERIC_FAMILY, NULL);
self->name = g_strdup (name);
return self;
}
/**
* pango_generic_family_add_family:
* @self: a `PangoGenericFamily`
* @family: (transfer none): a `PangoFontFamily` to add
*
* Adds a `PangoFontFamily` to a `PangoGenericFamily`.
*
* It is an error to call this function more than
* once for the same family.
*
* Since: 1.52
*/
void
pango_generic_family_add_family (PangoGenericFamily *self,
PangoFontFamily *family)
{
g_return_if_fail (PANGO_IS_GENERIC_FAMILY (self));
g_return_if_fail (PANGO_IS_FONT_FAMILY (family));
g_ptr_array_add (self->families, g_object_ref (family));
}
/* }}} */
/* vim:set foldmethod=marker expandtab: */
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