/* 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 #include #include 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 PANGO_FONT_MASK_STYLE = 1 PANGO_FONT_MASK_VARIANT = 1 PANGO_FONT_MASK_WEIGHT = 1 PANGO_FONT_MASK_STRETCH = 1 PANGO_FONT_MASK_SIZE = 1 PANGO_FONT_MASK_GRAVITY = 1 } 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) G_GNUC_CONST; 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) G_GNUC_PURE; gboolean pango_font_description_equal (const PangoFontDescription *desc1, const PangoFontDescription *desc2) G_GNUC_PURE; 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) G_GNUC_PURE; void pango_font_description_set_style (PangoFontDescription *desc, PangoStyle style); PangoStyle pango_font_description_get_style (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_variant (PangoFontDescription *desc, PangoVariant variant); PangoVariant pango_font_description_get_variant (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_weight (PangoFontDescription *desc, PangoWeight weight); PangoWeight pango_font_description_get_weight (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_stretch (PangoFontDescription *desc, PangoStretch stretch); PangoStretch pango_font_description_get_stretch (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_size (PangoFontDescription *desc, gint size); gint pango_font_description_get_size (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_absolute_size (PangoFontDescription *desc, double size); gboolean pango_font_description_get_size_is_absolute (const PangoFontDescription *desc) G_GNUC_PURE; void pango_font_description_set_gravity (PangoFontDescription *desc, PangoGravity gravity); PangoGravity pango_font_description_get_gravity (const PangoFontDescription *desc) G_GNUC_PURE; PangoFontMask pango_font_description_get_set_fields (const PangoFontDescription *desc) G_GNUC_PURE; 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) G_GNUC_PURE; 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) G_GNUC_CONST; PangoFontMetrics *pango_font_metrics_ref (PangoFontMetrics *metrics); void pango_font_metrics_unref (PangoFontMetrics *metrics); int pango_font_metrics_get_ascent (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_descent (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_approximate_char_width (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_approximate_digit_width (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_underline_position (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_underline_thickness (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_strikethrough_position (PangoFontMetrics *metrics) G_GNUC_PURE; int pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics) G_GNUC_PURE; #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) G_GNUC_PURE; gboolean pango_font_family_is_monospace (PangoFontFamily *family) G_GNUC_PURE; #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) G_GNUC_PURE; void pango_font_face_list_sizes (PangoFontFace *face, int **sizes, int *n_sizes); gboolean pango_font_face_is_synthesized (PangoFontFace *face) G_GNUC_PURE; #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); gboolean (*is_synthesized) (PangoFontFace *face); /*< private >*/ /* Padding for future expansion */ 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 */ #define PANGO_GLYPH_EMPTY ((PangoGlyph)0x0FFFFFFF) #define PANGO_GLYPH_INVALID_INPUT ((PangoGlyph)0xFFFFFFFF) #define PANGO_GLYPH_UNKNOWN_FLAG ((PangoGlyph)0x10000000) #define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG) G_END_DECLS #endif /* __PANGO_FONT_H__ */
