387 lines
15 KiB
C
387 lines
15 KiB
C
/* Pango
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* pango-font.h: Font handling
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*
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* Copyright (C) 2000 Red Hat Software
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __PANGO_FONT_H__
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#define __PANGO_FONT_H__
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#include <pango/pango-coverage.h>
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#include <pango/pango-types.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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typedef struct _PangoFontDescription PangoFontDescription;
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typedef struct _PangoFontMetrics PangoFontMetrics;
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/**
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* PangoStyle:
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* @PANGO_STYLE_NORMAL: the font is upright.
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* @PANGO_STYLE_OBLIQUE: the font is slanted, but in a roman style.
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* @PANGO_STYLE_ITALIC: the font is slanted in an italic style.
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*
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* An enumeration specifying the various slant styles possible for a font.
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**/
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typedef enum {
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PANGO_STYLE_NORMAL,
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PANGO_STYLE_OBLIQUE,
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PANGO_STYLE_ITALIC
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} PangoStyle;
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typedef enum {
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PANGO_VARIANT_NORMAL,
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PANGO_VARIANT_SMALL_CAPS
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} PangoVariant;
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typedef enum {
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PANGO_WEIGHT_THIN = 100,
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PANGO_WEIGHT_ULTRALIGHT = 200,
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PANGO_WEIGHT_LIGHT = 300,
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PANGO_WEIGHT_BOOK = 380,
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PANGO_WEIGHT_NORMAL = 400,
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PANGO_WEIGHT_MEDIUM = 500,
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PANGO_WEIGHT_SEMIBOLD = 600,
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PANGO_WEIGHT_BOLD = 700,
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PANGO_WEIGHT_ULTRABOLD = 800,
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PANGO_WEIGHT_HEAVY = 900,
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PANGO_WEIGHT_ULTRAHEAVY = 1000
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} PangoWeight;
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typedef enum {
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PANGO_STRETCH_ULTRA_CONDENSED,
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PANGO_STRETCH_EXTRA_CONDENSED,
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PANGO_STRETCH_CONDENSED,
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PANGO_STRETCH_SEMI_CONDENSED,
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PANGO_STRETCH_NORMAL,
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PANGO_STRETCH_SEMI_EXPANDED,
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PANGO_STRETCH_EXPANDED,
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PANGO_STRETCH_EXTRA_EXPANDED,
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PANGO_STRETCH_ULTRA_EXPANDED
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} PangoStretch;
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typedef enum {
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PANGO_FONT_MASK_FAMILY = 1 << 0,
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PANGO_FONT_MASK_STYLE = 1 << 1,
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PANGO_FONT_MASK_VARIANT = 1 << 2,
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PANGO_FONT_MASK_WEIGHT = 1 << 3,
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PANGO_FONT_MASK_STRETCH = 1 << 4,
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PANGO_FONT_MASK_SIZE = 1 << 5,
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PANGO_FONT_MASK_GRAVITY = 1 << 6
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} PangoFontMask;
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/* CSS scale factors (1.2 factor between each size) */
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#define PANGO_SCALE_XX_SMALL ((double)0.5787037037037)
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#define PANGO_SCALE_X_SMALL ((double)0.6444444444444)
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#define PANGO_SCALE_SMALL ((double)0.8333333333333)
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#define PANGO_SCALE_MEDIUM ((double)1.0)
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#define PANGO_SCALE_LARGE ((double)1.2)
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#define PANGO_SCALE_X_LARGE ((double)1.4399999999999)
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#define PANGO_SCALE_XX_LARGE ((double)1.728)
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/*
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* PangoFontDescription
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*/
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#define PANGO_TYPE_FONT_DESCRIPTION (pango_font_description_get_type ())
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GType pango_font_description_get_type (void) G_GNUC_CONST;
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PangoFontDescription *pango_font_description_new (void);
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PangoFontDescription *pango_font_description_copy (const PangoFontDescription *desc);
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PangoFontDescription *pango_font_description_copy_static (const PangoFontDescription *desc);
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guint pango_font_description_hash (const PangoFontDescription *desc) G_GNUC_PURE;
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gboolean pango_font_description_equal (const PangoFontDescription *desc1,
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const PangoFontDescription *desc2) G_GNUC_PURE;
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void pango_font_description_free (PangoFontDescription *desc);
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void pango_font_descriptions_free (PangoFontDescription **descs,
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int n_descs);
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void pango_font_description_set_family (PangoFontDescription *desc,
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const char *family);
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void pango_font_description_set_family_static (PangoFontDescription *desc,
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const char *family);
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const char *pango_font_description_get_family (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_style (PangoFontDescription *desc,
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PangoStyle style);
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PangoStyle pango_font_description_get_style (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_variant (PangoFontDescription *desc,
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PangoVariant variant);
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PangoVariant pango_font_description_get_variant (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_weight (PangoFontDescription *desc,
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PangoWeight weight);
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PangoWeight pango_font_description_get_weight (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_stretch (PangoFontDescription *desc,
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PangoStretch stretch);
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PangoStretch pango_font_description_get_stretch (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_size (PangoFontDescription *desc,
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gint size);
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gint pango_font_description_get_size (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_absolute_size (PangoFontDescription *desc,
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double size);
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gboolean pango_font_description_get_size_is_absolute (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_set_gravity (PangoFontDescription *desc,
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PangoGravity gravity);
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PangoGravity pango_font_description_get_gravity (const PangoFontDescription *desc) G_GNUC_PURE;
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PangoFontMask pango_font_description_get_set_fields (const PangoFontDescription *desc) G_GNUC_PURE;
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void pango_font_description_unset_fields (PangoFontDescription *desc,
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PangoFontMask to_unset);
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void pango_font_description_merge (PangoFontDescription *desc,
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const PangoFontDescription *desc_to_merge,
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gboolean replace_existing);
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void pango_font_description_merge_static (PangoFontDescription *desc,
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const PangoFontDescription *desc_to_merge,
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gboolean replace_existing);
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gboolean pango_font_description_better_match (const PangoFontDescription *desc,
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const PangoFontDescription *old_match,
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const PangoFontDescription *new_match) G_GNUC_PURE;
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PangoFontDescription *pango_font_description_from_string (const char *str);
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char * pango_font_description_to_string (const PangoFontDescription *desc);
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char * pango_font_description_to_filename (const PangoFontDescription *desc);
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/*
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* PangoFontMetrics
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*/
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#define PANGO_TYPE_FONT_METRICS (pango_font_metrics_get_type ())
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GType pango_font_metrics_get_type (void) G_GNUC_CONST;
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PangoFontMetrics *pango_font_metrics_ref (PangoFontMetrics *metrics);
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void pango_font_metrics_unref (PangoFontMetrics *metrics);
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int pango_font_metrics_get_ascent (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_descent (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_approximate_char_width (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_approximate_digit_width (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_underline_position (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_underline_thickness (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_strikethrough_position (PangoFontMetrics *metrics) G_GNUC_PURE;
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int pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics) G_GNUC_PURE;
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#ifdef PANGO_ENABLE_BACKEND
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PangoFontMetrics *pango_font_metrics_new (void);
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struct _PangoFontMetrics
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{
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guint ref_count;
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int ascent;
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int descent;
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int approximate_char_width;
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int approximate_digit_width;
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int underline_position;
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int underline_thickness;
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int strikethrough_position;
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int strikethrough_thickness;
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};
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#endif /* PANGO_ENABLE_BACKEND */
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/*
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* PangoFontFamily
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*/
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#define PANGO_TYPE_FONT_FAMILY (pango_font_family_get_type ())
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#define PANGO_FONT_FAMILY(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FAMILY, PangoFontFamily))
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#define PANGO_IS_FONT_FAMILY(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FAMILY))
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typedef struct _PangoFontFamily PangoFontFamily;
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typedef struct _PangoFontFace PangoFontFace;
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GType pango_font_family_get_type (void) G_GNUC_CONST;
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void pango_font_family_list_faces (PangoFontFamily *family,
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PangoFontFace ***faces,
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int *n_faces);
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const char *pango_font_family_get_name (PangoFontFamily *family) G_GNUC_PURE;
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gboolean pango_font_family_is_monospace (PangoFontFamily *family) G_GNUC_PURE;
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#ifdef PANGO_ENABLE_BACKEND
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#define PANGO_FONT_FAMILY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT_FAMILY, PangoFontFamilyClass))
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#define PANGO_IS_FONT_FAMILY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT_FAMILY))
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#define PANGO_FONT_FAMILY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT_FAMILY, PangoFontFamilyClass))
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typedef struct _PangoFontFamilyClass PangoFontFamilyClass;
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struct _PangoFontFamily
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{
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GObject parent_instance;
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};
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struct _PangoFontFamilyClass
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{
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GObjectClass parent_class;
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/*< public >*/
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void (*list_faces) (PangoFontFamily *family,
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PangoFontFace ***faces,
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int *n_faces);
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const char * (*get_name) (PangoFontFamily *family);
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gboolean (*is_monospace) (PangoFontFamily *family);
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/*< private >*/
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/* Padding for future expansion */
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void (*_pango_reserved2) (void);
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void (*_pango_reserved3) (void);
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void (*_pango_reserved4) (void);
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};
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#endif /* PANGO_ENABLE_BACKEND */
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/*
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* PangoFontFace
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*/
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#define PANGO_TYPE_FONT_FACE (pango_font_face_get_type ())
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#define PANGO_FONT_FACE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FACE, PangoFontFace))
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#define PANGO_IS_FONT_FACE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FACE))
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GType pango_font_face_get_type (void) G_GNUC_CONST;
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PangoFontDescription *pango_font_face_describe (PangoFontFace *face);
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const char *pango_font_face_get_face_name (PangoFontFace *face) G_GNUC_PURE;
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void pango_font_face_list_sizes (PangoFontFace *face,
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int **sizes,
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int *n_sizes);
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gboolean pango_font_face_is_synthesized (PangoFontFace *face) G_GNUC_PURE;
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#ifdef PANGO_ENABLE_BACKEND
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#define PANGO_FONT_FACE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT_FACE, PangoFontFaceClass))
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#define PANGO_IS_FONT_FACE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT_FACE))
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#define PANGO_FONT_FACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT_FACE, PangoFontFaceClass))
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typedef struct _PangoFontFaceClass PangoFontFaceClass;
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struct _PangoFontFace
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{
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GObject parent_instance;
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};
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struct _PangoFontFaceClass
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{
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GObjectClass parent_class;
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/*< public >*/
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const char * (*get_face_name) (PangoFontFace *face);
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PangoFontDescription * (*describe) (PangoFontFace *face);
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void (*list_sizes) (PangoFontFace *face,
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int **sizes,
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int *n_sizes);
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gboolean (*is_synthesized) (PangoFontFace *face);
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/*< private >*/
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/* Padding for future expansion */
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void (*_pango_reserved3) (void);
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void (*_pango_reserved4) (void);
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};
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#endif /* PANGO_ENABLE_BACKEND */
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/*
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* PangoFont
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*/
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#define PANGO_TYPE_FONT (pango_font_get_type ())
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#define PANGO_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT, PangoFont))
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#define PANGO_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT))
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GType pango_font_get_type (void) G_GNUC_CONST;
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PangoFontDescription *pango_font_describe (PangoFont *font);
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PangoFontDescription *pango_font_describe_with_absolute_size (PangoFont *font);
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PangoCoverage * pango_font_get_coverage (PangoFont *font,
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PangoLanguage *language);
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PangoEngineShape * pango_font_find_shaper (PangoFont *font,
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PangoLanguage *language,
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guint32 ch);
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PangoFontMetrics * pango_font_get_metrics (PangoFont *font,
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PangoLanguage *language);
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void pango_font_get_glyph_extents (PangoFont *font,
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PangoGlyph glyph,
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PangoRectangle *ink_rect,
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PangoRectangle *logical_rect);
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PangoFontMap *pango_font_get_font_map (PangoFont *font);
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#ifdef PANGO_ENABLE_BACKEND
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#define PANGO_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT, PangoFontClass))
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#define PANGO_IS_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT))
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#define PANGO_FONT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT, PangoFontClass))
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typedef struct _PangoFontClass PangoFontClass;
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struct _PangoFont
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{
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GObject parent_instance;
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};
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struct _PangoFontClass
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{
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GObjectClass parent_class;
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/*< public >*/
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PangoFontDescription *(*describe) (PangoFont *font);
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PangoCoverage * (*get_coverage) (PangoFont *font,
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PangoLanguage *lang);
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PangoEngineShape * (*find_shaper) (PangoFont *font,
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PangoLanguage *lang,
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guint32 ch);
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void (*get_glyph_extents) (PangoFont *font,
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PangoGlyph glyph,
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PangoRectangle *ink_rect,
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PangoRectangle *logical_rect);
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PangoFontMetrics * (*get_metrics) (PangoFont *font,
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PangoLanguage *language);
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PangoFontMap * (*get_font_map) (PangoFont *font);
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PangoFontDescription *(*describe_absolute) (PangoFont *font);
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/*< private >*/
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/* Padding for future expansion */
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void (*_pango_reserved1) (void);
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void (*_pango_reserved2) (void);
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};
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/* used for very rare and miserable situtations that we cannot even
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* draw a hexbox
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*/
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#define PANGO_UNKNOWN_GLYPH_WIDTH 10
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#define PANGO_UNKNOWN_GLYPH_HEIGHT 14
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#endif /* PANGO_ENABLE_BACKEND */
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#define PANGO_GLYPH_EMPTY ((PangoGlyph)0x0FFFFFFF)
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#define PANGO_GLYPH_INVALID_INPUT ((PangoGlyph)0xFFFFFFFF)
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#define PANGO_GLYPH_UNKNOWN_FLAG ((PangoGlyph)0x10000000)
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#define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG)
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G_END_DECLS
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#endif /* __PANGO_FONT_H__ */
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