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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__
#include <pango/pango-coverage.h>
#include <pango/pango-types.h>
#include <glib-object.h>
G_BEGIN_DECLS
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_SEMIBOLD = 600,
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;
typedef enum {
PANGO_FONT_MASK_FAMILY = 1 << 0,
PANGO_FONT_MASK_STYLE = 1 << 1,
PANGO_FONT_MASK_VARIANT = 1 << 2,
PANGO_FONT_MASK_WEIGHT = 1 << 3,
PANGO_FONT_MASK_STRETCH = 1 << 4,
PANGO_FONT_MASK_SIZE = 1 << 5
} PangoFontMask;
/* 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)
/*
* PangoFontDescription
*/
#define PANGO_TYPE_FONT_DESCRIPTION (pango_font_description_get_type ())
GType pango_font_description_get_type (void);
PangoFontDescription *pango_font_description_new (void);
PangoFontDescription *pango_font_description_copy (const PangoFontDescription *desc);
PangoFontDescription *pango_font_description_copy_static (const PangoFontDescription *desc);
guint pango_font_description_hash (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);
void pango_font_description_set_family (PangoFontDescription *desc,
const char *family);
void pango_font_description_set_family_static (PangoFontDescription *desc,
const char *family);
G_CONST_RETURN char *pango_font_description_get_family (const PangoFontDescription *desc);
void pango_font_description_set_style (PangoFontDescription *desc,
PangoStyle style);
PangoStyle pango_font_description_get_style (const PangoFontDescription *desc);
void pango_font_description_set_variant (PangoFontDescription *desc,
PangoVariant variant);
PangoVariant pango_font_description_get_variant (const PangoFontDescription *desc);
void pango_font_description_set_weight (PangoFontDescription *desc,
PangoWeight weight);
PangoWeight pango_font_description_get_weight (const PangoFontDescription *desc);
void pango_font_description_set_stretch (PangoFontDescription *desc,
PangoStretch stretch);
PangoStretch pango_font_description_get_stretch (const PangoFontDescription *desc);
void pango_font_description_set_size (PangoFontDescription *desc,
gint size);
gint pango_font_description_get_size (const PangoFontDescription *desc);
void pango_font_description_set_absolute_size (PangoFontDescription *desc,
double size);
gboolean pango_font_description_get_size_is_absolute (const PangoFontDescription *desc);
PangoFontMask pango_font_description_get_set_fields (const PangoFontDescription *desc);
void pango_font_description_unset_fields (PangoFontDescription *desc,
PangoFontMask to_unset);
void pango_font_description_merge (PangoFontDescription *desc,
const PangoFontDescription *desc_to_merge,
gboolean replace_existing);
void pango_font_description_merge_static (PangoFontDescription *desc,
const PangoFontDescription *desc_to_merge,
gboolean replace_existing);
gboolean pango_font_description_better_match (const PangoFontDescription *desc,
const PangoFontDescription *old_match,
const PangoFontDescription *new_match);
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);
/*
* PangoFontMetrics
*/
#define PANGO_TYPE_FONT_METRICS (pango_font_metrics_get_type ())
GType pango_font_metrics_get_type (void);
PangoFontMetrics *pango_font_metrics_ref (PangoFontMetrics *metrics);
void pango_font_metrics_unref (PangoFontMetrics *metrics);
int pango_font_metrics_get_ascent (PangoFontMetrics *metrics);
int pango_font_metrics_get_descent (PangoFontMetrics *metrics);
int pango_font_metrics_get_approximate_char_width (PangoFontMetrics *metrics);
int pango_font_metrics_get_approximate_digit_width (PangoFontMetrics *metrics);
int pango_font_metrics_get_underline_position (PangoFontMetrics *metrics);
int pango_font_metrics_get_underline_thickness (PangoFontMetrics *metrics);
int pango_font_metrics_get_strikethrough_position (PangoFontMetrics *metrics);
int pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics);
#ifdef PANGO_ENABLE_BACKEND
PangoFontMetrics *pango_font_metrics_new (void);
struct _PangoFontMetrics
{
guint ref_count;
int ascent;
int descent;
int approximate_char_width;
int approximate_digit_width;
int underline_position;
int underline_thickness;
int strikethrough_position;
int strikethrough_thickness;
};
#endif /* PANGO_ENABLE_BACKEND */
/*
* PangoFontFamily
*/
#define PANGO_TYPE_FONT_FAMILY (pango_font_family_get_type ())
#define PANGO_FONT_FAMILY(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FAMILY, PangoFontFamily))
#define PANGO_IS_FONT_FAMILY(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FAMILY))
typedef struct _PangoFontFamily PangoFontFamily;
typedef struct _PangoFontFace PangoFontFace;
GType pango_font_family_get_type (void) G_GNUC_CONST;
void pango_font_family_list_faces (PangoFontFamily *family,
PangoFontFace ***faces,
int *n_faces);
G_CONST_RETURN char *pango_font_family_get_name (PangoFontFamily *family);
gboolean pango_font_family_is_monospace (PangoFontFamily *family);
#ifdef PANGO_ENABLE_BACKEND
#define PANGO_FONT_FAMILY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT_FAMILY, PangoFontFamilyClass))
#define PANGO_IS_FONT_FAMILY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT_FAMILY))
#define PANGO_FONT_FAMILY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT_FAMILY, PangoFontFamilyClass))
typedef struct _PangoFontFamilyClass PangoFontFamilyClass;
struct _PangoFontFamily
{
GObject parent_instance;
};
struct _PangoFontFamilyClass
{
GObjectClass parent_class;
/*< public >*/
void (*list_faces) (PangoFontFamily *family,
PangoFontFace ***faces,
int *n_faces);
const char * (*get_name) (PangoFontFamily *family);
gboolean (*is_monospace) (PangoFontFamily *family);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
#endif /* PANGO_ENABLE_BACKEND */
/*
* PangoFontFace
*/
#define PANGO_TYPE_FONT_FACE (pango_font_face_get_type ())
#define PANGO_FONT_FACE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FACE, PangoFontFace))
#define PANGO_IS_FONT_FACE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FACE))
GType pango_font_face_get_type (void) G_GNUC_CONST;
PangoFontDescription *pango_font_face_describe (PangoFontFace *face);
G_CONST_RETURN char *pango_font_face_get_face_name (PangoFontFace *face);
void pango_font_face_list_sizes (PangoFontFace *face,
int **sizes,
int *n_sizes);
#ifdef PANGO_ENABLE_BACKEND
#define PANGO_FONT_FACE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT_FACE, PangoFontFaceClass))
#define PANGO_IS_FONT_FACE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT_FACE))
#define PANGO_FONT_FACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT_FACE, PangoFontFaceClass))
typedef struct _PangoFontFaceClass PangoFontFaceClass;
struct _PangoFontFace
{
GObject parent_instance;
};
struct _PangoFontFaceClass
{
GObjectClass parent_class;
/*< public >*/
const char * (*get_face_name) (PangoFontFace *face);
PangoFontDescription * (*describe) (PangoFontFace *face);
void (*list_sizes) (PangoFontFace *face,
int **sizes,
int *n_sizes);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
#endif /* PANGO_ENABLE_BACKEND */
/*
* PangoFont
*/
#define PANGO_TYPE_FONT (pango_font_get_type ())
#define PANGO_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT, PangoFont))
#define PANGO_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT))
GType pango_font_get_type (void) G_GNUC_CONST;
PangoFontDescription *pango_font_describe (PangoFont *font);
PangoFontDescription *pango_font_describe_with_absolute_size (PangoFont *font);
PangoCoverage * pango_font_get_coverage (PangoFont *font,
PangoLanguage *language);
PangoEngineShape * pango_font_find_shaper (PangoFont *font,
PangoLanguage *language,
guint32 ch);
PangoFontMetrics * pango_font_get_metrics (PangoFont *font,
PangoLanguage *language);
void pango_font_get_glyph_extents (PangoFont *font,
PangoGlyph glyph,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
PangoFontMap *pango_font_get_font_map (PangoFont *font);
#ifdef PANGO_ENABLE_BACKEND
#define PANGO_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT, PangoFontClass))
#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))
typedef struct _PangoFontClass PangoFontClass;
struct _PangoFont
{
GObject parent_instance;
};
struct _PangoFontClass
{
GObjectClass parent_class;
/*< public >*/
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);
PangoFontMetrics * (*get_metrics) (PangoFont *font,
PangoLanguage *language);
PangoFontMap * (*get_font_map) (PangoFont *font);
PangoFontDescription *(*describe_absolute) (PangoFont *font);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
};
/* used for very rare and miserable situtations that we cannot even
* draw a hexbox
*/
#define PANGO_UNKNOWN_GLYPH_WIDTH 10
#define PANGO_UNKNOWN_GLYPH_HEIGHT 14
#endif /* PANGO_ENABLE_BACKEND */
#if defined(PANGO_ENABLE_ENGINE) || defined(PANGO_ENABLE_BACKEND)
#define PANGO_GLYPH_EMPTY ((PangoGlyph)0x0FFFFFFF)
#define PANGO_GLYPH_UNKNOWN_FLAG ((PangoGlyph)0x10000000)
#define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG)
#endif
G_END_DECLS
#endif /* __PANGO_FONT_H__ */
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