diff options
Diffstat (limited to 'pango/pango-font-private.h')
| -rw-r--r-- | pango/pango-font-private.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/pango/pango-font-private.h b/pango/pango-font-private.h new file mode 100644 index 00000000..13b05254 --- /dev/null +++ b/pango/pango-font-private.h @@ -0,0 +1,194 @@ +/* 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_PRIVATE_H__ +#define __PANGO_FONT_PRIVATE_H__ + +#include <pango/pango-font.h> +#include <pango/pango-coverage.h> +#include <pango/pango-types.h> + +#include <glib-object.h> + +G_BEGIN_DECLS + + +PANGO_AVAILABLE_IN_ALL +PangoFontMetrics *pango_font_metrics_new (void); + +struct _PangoFontMetrics +{ + /* <private> */ + 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; +}; + + +#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; + + +/** + * PangoFontFamily: + * + * The #PangoFontFamily structure is used to represent a family of related + * font faces. The faces in a family share a common design, but differ in + * slant, weight, width and other aspects. + */ +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); + gboolean (*is_variable) (PangoFontFamily *family); + + /*< private >*/ + + /* Padding for future expansion */ + void (*_pango_reserved2) (void); + void (*_pango_reserved3) (void); +}; + + +#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; + +/** + * PangoFontFace: + * + * The #PangoFontFace structure is used to represent a group of fonts with + * the same family, slant, weight, width, but varying sizes. + */ +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); +}; + + +#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; + +/** + * PangoFont: + * + * The #PangoFont structure is used to represent + * a font in a rendering-system-independent matter. + * To create an implementation of a #PangoFont, + * the rendering-system specific code should allocate + * a larger structure that contains a nested + * #PangoFont, fill in the <structfield>klass</structfield> member of + * the nested #PangoFont with a pointer to + * a appropriate #PangoFontClass, then call + * pango_font_init() on the structure. + * + * The #PangoFont structure contains one member + * which the implementation fills in. + */ +struct _PangoFont +{ + GObject parent_instance; +}; + +struct _PangoFontClass +{ + GObjectClass parent_class; + + /*< public >*/ + + PangoFontDescription *(*describe) (PangoFont *font); + PangoCoverage * (*get_coverage) (PangoFont *font, + PangoLanguage *language); + PangoEngineShape * (*find_shaper) (PangoFont *font, + PangoLanguage *language, + 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 + + +G_END_DECLS + +#endif /* __PANGO_FONT_PRIVATE_H__ */ |