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/*
* Copyright 2000 Red Hat Software
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <pango/pango-font-family.h>
#include <pango/pango-font.h>
#include <pango/pango-types.h>
#include <glib-object.h>
#ifdef HAVE_CAIRO
#include <cairo.h>
#endif
struct _PangoFont
{
GObject parent_instance;
PangoFontFace *face;
hb_font_t *hb_font;
int size; /* point size, scaled by PANGO_SCALE */
float dpi;
PangoGravity gravity;
PangoMatrix ctm;
#ifdef HAVE_CAIRO
cairo_font_options_t *options;
#endif
};
typedef struct _PangoFontClass PangoFontClass;
struct _PangoFontClass
{
GObjectClass parent_class;
PangoFontDescription * (* describe) (PangoFont *font);
void (* get_glyph_extents) (PangoFont *font,
PangoGlyph glyph,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
PangoFontMetrics * (* get_metrics) (PangoFont *font,
PangoLanguage *language);
hb_font_t * (* create_hb_font) (PangoFont *font);
gboolean (* is_hinted) (PangoFont *font);
void (* get_scale_factors) (PangoFont *font,
double *x_scale,
double *y_scale);
void (* get_transform) (PangoFont *font,
PangoMatrix *matrix);
};
#define PANGO_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT, PangoFontClass))
#define PANGO_FONT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT, PangoFontClass))
static inline void
pango_font_set_face (PangoFont *font,
PangoFontFace *face)
{
font->face = (PangoFontFace *) g_object_ref (face);
}
static inline void
pango_font_set_size (PangoFont *font,
int size)
{
font->size = size;
}
static inline void
pango_font_set_dpi (PangoFont *font,
float dpi)
{
font->dpi = dpi;
}
static inline void
pango_font_set_gravity (PangoFont *font,
PangoGravity gravity)
{
font->gravity = gravity;
}
static inline void
pango_font_set_ctm (PangoFont *font,
const PangoMatrix *ctm)
{
const PangoMatrix matrix_init = PANGO_MATRIX_INIT;
font->ctm = ctm ? *ctm : matrix_init;
}
gboolean pango_font_is_hinted (PangoFont *font);
void pango_font_get_scale_factors (PangoFont *font,
double *x_scale,
double *y_scale);
void pango_font_get_transform (PangoFont *font,
PangoMatrix *matrix);
gboolean pango_font_description_is_similar (const PangoFontDescription *a,
const PangoFontDescription *b);
int pango_font_description_compute_distance (const PangoFontDescription *a,
const PangoFontDescription *b);
/* We use these values in a few places as a fallback size for an
* unknown glyph, if we have no better information.
*/
#define PANGO_UNKNOWN_GLYPH_WIDTH 10
#define PANGO_UNKNOWN_GLYPH_HEIGHT 14
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