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/* Pango
* pango-font.h: Font handling
*
* Copyright (C) 2000 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_FONT_H__
#define __PANGO_FONT_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <pango/pango-coverage.h>
#include <pango/pango-types.h>
#include <glib-object.h>
typedef struct _PangoFontDescription PangoFontDescription;
typedef struct _PangoFontMetrics PangoFontMetrics;
/**
* PangoStyle:
* @PANGO_STYLE_NORMAL: the font is upright.
* @PANGO_STYLE_OBLIQUE: the font is slanted, but in a roman style.
* @PANGO_STYLE_ITALIC: the font is slanted in an italic style.
*
* An enumeration specifying the various slant styles possible for a font.
**/
typedef enum {
PANGO_STYLE_NORMAL,
PANGO_STYLE_OBLIQUE,
PANGO_STYLE_ITALIC
} PangoStyle;
typedef enum {
PANGO_VARIANT_NORMAL,
PANGO_VARIANT_SMALL_CAPS
} PangoVariant;
typedef enum {
PANGO_WEIGHT_ULTRALIGHT = 200,
PANGO_WEIGHT_LIGHT = 300,
PANGO_WEIGHT_NORMAL = 400,
PANGO_WEIGHT_BOLD = 700,
PANGO_WEIGHT_ULTRABOLD = 800,
PANGO_WEIGHT_HEAVY = 900
} PangoWeight;
typedef enum {
PANGO_STRETCH_ULTRA_CONDENSED,
PANGO_STRETCH_EXTRA_CONDENSED,
PANGO_STRETCH_CONDENSED,
PANGO_STRETCH_SEMI_CONDENSED,
PANGO_STRETCH_NORMAL,
PANGO_STRETCH_SEMI_EXPANDED,
PANGO_STRETCH_EXPANDED,
PANGO_STRETCH_EXTRA_EXPANDED,
PANGO_STRETCH_ULTRA_EXPANDED
} PangoStretch;
/* CSS scale factors (1.2 factor between each size) */
#define PANGO_SCALE_XX_SMALL ((double)0.5787037037037)
#define PANGO_SCALE_X_SMALL ((double)0.6444444444444)
#define PANGO_SCALE_SMALL ((double)0.8333333333333)
#define PANGO_SCALE_MEDIUM ((double)1.0)
#define PANGO_SCALE_LARGE ((double)1.2)
#define PANGO_SCALE_X_LARGE ((double)1.4399999999999)
#define PANGO_SCALE_XX_LARGE ((double)1.728)
struct _PangoFontDescription
{
char *family_name;
PangoStyle style;
PangoVariant variant;
PangoWeight weight;
PangoStretch stretch;
int size;
};
struct _PangoFontMetrics
{
int ascent;
int descent;
int approximate_char_width;
int approximate_digit_width;
};
PangoFontDescription *pango_font_description_copy (const PangoFontDescription *desc);
gboolean pango_font_description_equal (const PangoFontDescription *desc1,
const PangoFontDescription *desc2);
void pango_font_description_free (PangoFontDescription *desc);
void pango_font_descriptions_free (PangoFontDescription **descs,
int n_descs);
PangoFontDescription *pango_font_description_from_string (const char *str);
char * pango_font_description_to_string (const PangoFontDescription *desc);
char * pango_font_description_to_filename (const PangoFontDescription *desc);
/* Logical fonts
*/
typedef struct _PangoFontClass PangoFontClass;
#define PANGO_TYPE_FONT (pango_font_get_type ())
#define PANGO_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT, PangoFont))
#define PANGO_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT, PangoFontClass))
#define PANGO_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT))
#define PANGO_IS_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT))
#define PANGO_FONT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT, PangoFontClass))
struct _PangoFont
{
GObject parent_instance;
};
struct _PangoFontClass
{
GObjectClass parent_class;
PangoFontDescription *(*describe) (PangoFont *font);
PangoCoverage * (*get_coverage) (PangoFont *font,
PangoLanguage *lang);
PangoEngineShape * (*find_shaper) (PangoFont *font,
PangoLanguage *lang,
guint32 ch);
void (*get_glyph_extents) (PangoFont *font,
PangoGlyph glyph,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
void (*get_metrics) (PangoFont *font,
PangoLanguage *language,
PangoFontMetrics *metrics);
};
GType pango_font_get_type (void) G_GNUC_CONST;
PangoFontDescription *pango_font_describe (PangoFont *font);
PangoCoverage * pango_font_get_coverage (PangoFont *font,
PangoLanguage *language);
PangoEngineShape * pango_font_find_shaper (PangoFont *font,
PangoLanguage *language,
guint32 ch);
void pango_font_get_metrics (PangoFont *font,
PangoLanguage *language,
PangoFontMetrics *metrics);
void pango_font_get_glyph_extents (PangoFont *font,
PangoGlyph glyph,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __PANGO_FONT_H__ */
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