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/* Pango
* pango-fontset.h: Font set handling
*
* Copyright (C) 2001 Red Hat Software
*
* 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.
*/
#ifndef __PANGO_FONTSET_H__
#define __PANGO_FONTSET_H__
#include <pango/pango-coverage.h>
#include <pango/pango-types.h>
#include <glib-object.h>
G_BEGIN_DECLS
/*
* PangoFontset
*/
#define PANGO_TYPE_FONTSET (pango_fontset_get_type ())
#define PANGO_FONTSET(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONTSET, PangoFontset))
#define PANGO_IS_FONTSET(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONTSET))
#define PANGO_FONTSET_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONTSET, PangoFontsetClass))
#define PANGO_IS_FONTSET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONTSET))
#define PANGO_FONTSET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONTSET, PangoFontsetClass))
PANGO_AVAILABLE_IN_ALL
GType pango_fontset_get_type (void) G_GNUC_CONST;
typedef struct _PangoFontset PangoFontset;
typedef struct _PangoFontsetClass PangoFontsetClass;
/**
* PangoFontsetForeachFunc:
* @fontset: a `PangoFontset`
* @font: a font from @fontset
* @user_data: callback data
*
* Callback used by pango_fontset_foreach() when enumerating
* fonts in a fontset.
*
* Returns: if %TRUE, stop iteration and return immediately.
*
* Since: 1.4
**/
typedef gboolean (*PangoFontsetForeachFunc) (PangoFontset *fontset,
PangoFont *font,
gpointer user_data);
/**
* PangoFontset:
*
* A `PangoFontset` represents a set of `PangoFont` to use when rendering text.
*
* A `PAngoFontset` is the result of resolving a `PangoFontDescription`
* against a particular `PangoContext`. It has operations for finding the
* component font for a particular Unicode character, and for finding a
* composite set of metrics for the entire fontset.
*/
struct _PangoFontset
{
GObject parent_instance;
};
/**
* PangoFontsetClass:
* @parent_class: parent `GObjectClass`
* @get_font: a function to get the font in the fontset that contains the
* best glyph for the given Unicode character; see pango_fontset_get_font().
* @get_metrics: a function to get overall metric information for the fonts
* in the fontset; see pango_fontset_get_metrics().
* @get_language: a function to get the language of the fontset.
* @foreach: a function to loop over the fonts in the fontset. See
* pango_fontset_foreach().
*
* The `PangoFontsetClass` structure holds the virtual functions for
* a particular `PangoFontset` implementation.
*/
struct _PangoFontsetClass
{
GObjectClass parent_class;
/*< public >*/
PangoFont * (*get_font) (PangoFontset *fontset,
guint wc);
PangoFontMetrics *(*get_metrics) (PangoFontset *fontset);
PangoLanguage * (*get_language) (PangoFontset *fontset);
void (*foreach) (PangoFontset *fontset,
PangoFontsetForeachFunc func,
gpointer data);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
/**
* PangoFontsetSimple:
*
* `PangoFontsetSimple` is a implementation of the abstract
* `PangoFontset` base class as an array of fonts.
*
* When creating a `PangoFontsetSimple`, you have to provide
* the array of fonts that make up the fontset.
*/
#define PANGO_TYPE_FONTSET_SIMPLE (pango_fontset_simple_get_type ())
#define PANGO_FONTSET_SIMPLE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONTSET_SIMPLE, PangoFontsetSimple))
#define PANGO_IS_FONTSET_SIMPLE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONTSET_SIMPLE))
typedef struct _PangoFontsetSimple PangoFontsetSimple;
typedef struct _PangoFontsetSimpleClass PangoFontsetSimpleClass;
PANGO_AVAILABLE_IN_ALL
GType pango_fontset_simple_get_type (void) G_GNUC_CONST;
PANGO_AVAILABLE_IN_ALL
PangoFontsetSimple * pango_fontset_simple_new (PangoLanguage *language);
PANGO_AVAILABLE_IN_ALL
void pango_fontset_simple_append (PangoFontsetSimple *fontset,
PangoFont *font);
PANGO_AVAILABLE_IN_ALL
int pango_fontset_simple_size (PangoFontsetSimple *fontset);
PANGO_AVAILABLE_IN_ALL
PangoFont * pango_fontset_get_font (PangoFontset *fontset,
guint wc);
PANGO_AVAILABLE_IN_ALL
PangoFontMetrics *pango_fontset_get_metrics (PangoFontset *fontset);
PANGO_AVAILABLE_IN_1_4
void pango_fontset_foreach (PangoFontset *fontset,
PangoFontsetForeachFunc func,
gpointer data);
G_END_DECLS
#endif /* __PANGO_FONTSET_H__ */
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