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/* Pango
* pangocairo-fontmap.c: Cairo font handling
*
* Copyright (C) 2000-2005 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.
*/
#include <config.h>
#include "pangocairo.h"
#include "pangocairo-private.h"
#include "pango-impl-utils.h"
#if defined (HAVE_CAIRO_ATSUI)
# include "pangocairo-atsui.h"
#elif defined (HAVE_CAIRO_WIN32)
# include "pangocairo-win32.h"
#elif defined (HAVE_CAIRO_FREETYPE)
# include "pangocairo-fc.h"
#endif
GType
pango_cairo_font_map_get_type (void)
{
static GType cairo_font_map_type = 0;
if (! cairo_font_map_type)
{
const GTypeInfo cairo_font_map_info =
{
sizeof (PangoCairoFontMapIface), /* class_size */
NULL, /* base_init */
NULL, /* base_finalize */
NULL,
NULL, /* class_finalize */
NULL, /* class_data */
0,
0,
NULL,
NULL
};
cairo_font_map_type =
g_type_register_static (G_TYPE_INTERFACE, I_("PangoCairoFontMap"),
&cairo_font_map_info, 0);
g_type_interface_add_prerequisite (cairo_font_map_type, PANGO_TYPE_FONT_MAP);
}
return cairo_font_map_type;
}
/**
* pango_cairo_font_map_new:
*
* Creates a new #PangoCairoFontMap object; a fontmap is used
* to cache information about available fonts, and holds
* certain global parameters such as the resolution.
* In most cases, you can use pango_cairo_font_map_get_default()
* instead.
*
* Note that the type of the returned object will depend
* on the particular font backend Cairo was compiled to use;
* You generally should only use the #PangoFontMap and
* #PangoCairoFontMap interfaces on the returned object.
*
* Return value: the newly allocated #PangoFontMap, which should
* be freed with g_object_unref().
*
* Since: 1.10
**/
PangoFontMap *
pango_cairo_font_map_new (void)
{
/* Make sure that the type system is initialized */
g_type_init ();
#if defined(HAVE_CAIRO_ATSUI)
return g_object_new (PANGO_TYPE_CAIRO_ATSUI_FONT_MAP, NULL);
#elif defined(HAVE_CAIRO_WIN32)
return g_object_new (PANGO_TYPE_CAIRO_WIN32_FONT_MAP, NULL);
#elif defined(HAVE_CAIRO_FREETYPE)
return g_object_new (PANGO_TYPE_CAIRO_FC_FONT_MAP, NULL);
#endif
}
/**
* pango_cairo_font_map_get_default:
*
* Gets a default font map to use with Cairo.
*
* Return value: the default Cairo fontmap for #Pango. This
* object is owned by Pango and must not be freed.
*
* Since: 1.10
**/
PangoFontMap *
pango_cairo_font_map_get_default (void)
{
static PangoFontMap *default_font_map = NULL;
if (!default_font_map)
default_font_map = pango_cairo_font_map_new ();
return default_font_map;
}
/**
* pango_cairo_font_map_set_resolution:
* @fontmap: a #PangoCairoFontMap
* @dpi: the resolution in "dots per inch". (Physical inches aren't actually
* involved; the terminology is conventional.)
*
* Sets the resolution for the fontmap. This is a scale factor between
* points specified in a #PangoFontDescription and Cairo units. The
* default value is 96, meaning that a 10 point font will be 13
* units high. (10 * 96. / 72. = 13.3).
*
* Since: 1.10
**/
void
pango_cairo_font_map_set_resolution (PangoCairoFontMap *fontmap,
double dpi)
{
g_return_if_fail (PANGO_IS_CAIRO_FONT_MAP (fontmap));
(* PANGO_CAIRO_FONT_MAP_GET_IFACE (fontmap)->set_resolution) (fontmap, dpi);
}
/**
* pango_cairo_font_map_get_resolution:
* @fontmap: a #PangoCairoFontMap
*
* Gets the resolution for the fontmap. See pango_cairo_font_map_set_resolution()
*
* Return value: the resolution in "dots per inch"
*
* Since: 1.10
**/
double
pango_cairo_font_map_get_resolution (PangoCairoFontMap *fontmap)
{
g_return_val_if_fail (PANGO_IS_CAIRO_FONT_MAP (fontmap), 96.);
return (* PANGO_CAIRO_FONT_MAP_GET_IFACE (fontmap)->get_resolution) (fontmap);
}
/**
* pango_cairo_font_map_create_context:
* @fontmap: a #PangoCairoFontMap
*
* Create a #PangoContext for the given fontmap.
*
* Return value: the newly created context; free with g_object_unref().
*
* Since: 1.10
**/
PangoContext *
pango_cairo_font_map_create_context (PangoCairoFontMap *fontmap)
{
PangoContext *context;
g_return_val_if_fail (PANGO_IS_CAIRO_FONT_MAP (fontmap), NULL);
context = pango_context_new ();
pango_context_set_font_map (context, PANGO_FONT_MAP (fontmap));
return context;
}
/**
* _pango_cairo_font_map_get_renderer:
* @fontmap: a #PangoCairoFontmap
*
* Gets the singleton #PangoCairoRenderer for this fontmap.
*
* Return value: the singleton renderer
**/
PangoRenderer *
_pango_cairo_font_map_get_renderer (PangoCairoFontMap *fontmap)
{
g_return_val_if_fail (PANGO_IS_CAIRO_FONT_MAP (fontmap), NULL);
return (* PANGO_CAIRO_FONT_MAP_GET_IFACE (fontmap)->get_renderer) (fontmap);
}
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