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/* Pango
* pangoft2-fontmap.c:
*
* Copyright (C) 2000 Red Hat Software
* Copyright (C) 2000 Tor Lillqvist
*
* 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 <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <fontconfig/fontconfig.h>
#include "pango-fontmap.h"
#include "pango-utils.h"
#include "pangoft2-private.h"
#include "modules.h"
#ifdef G_OS_WIN32
#define STRICT
#include <windows.h>
#endif
typedef struct _PangoFT2Family PangoFT2Family;
struct _PangoFT2FontMap
{
PangoFontMap parent_instance;
FT_Library library;
/* We have one map from PangoFontDescription -> PangoXftPatternSet
* per language tag.
*/
GList *fontset_hash_list;
GHashTable *coverage_hash; /* Maps font file name -> PangoCoverage */
GHashTable *fonts; /* Maps XftPattern -> PangoFT2Font */
GQueue *freed_fonts; /* Fonts in fonts that has been freed */
/* List of all families availible */
PangoFT2Family **families;
int n_families; /* -1 == uninitialized */
double dpi_x;
double dpi_y;
guint closed : 1;
/* Function to call on prepared patterns to do final
* config tweaking.
*/
PangoFT2SubstituteFunc substitute_func;
gpointer substitute_data;
GDestroyNotify substitute_destroy;
};
/************************************************************
* Code shared with PangoXft *
************************************************************/
#define PangoFcFamily PangoFT2Family
#define _PangoFcFamily _PangoFT2Family
#define PangoFcFontMap PangoFT2FontMap
#define PangoFcFont PangoFT2Font
#define PANGO_FC_FONT_MAP PANGO_FT2_FONT_MAP
#define pango_fc_font_map_get_type pango_ft2_font_map_get_type
#define _pango_fc_font_map_add _pango_ft2_font_map_add
#define _pango_fc_font_map_remove _pango_ft2_font_map_remove
#define _pango_fc_font_map_cache_add _pango_ft2_font_map_cache_add
#define _pango_fc_font_map_cache_remove _pango_ft2_font_map_cache_remove
#define _pango_fc_font_map_get_coverage _pango_ft2_font_map_get_coverage
#define _pango_fc_font_map_set_coverage _pango_ft2_font_map_set_coverage
#define _pango_fc_font_desc_from_pattern _pango_ft2_font_desc_from_pattern
#define _pango_fc_font_new _pango_ft2_font_new
#define PANGO_FC_NAME "PangoFT2"
#include "pangofc-fontmap.cI"
/*************************************************************
* FreeType specific code *
*************************************************************/
static PangoFT2FontMap *pango_ft2_global_fontmap = NULL;
/**
* pango_ft2_font_map_new:
*
* Create a new #PangoFT2FontMap object; a fontmap is used
* to cache information about available fonts, and holds
* certain global parameters such as the resolution and
* the default substitute function (see
* pango_font_map_set_default_substitute ()).
*
* Return value: the newly created fontmap object. Unref
* with g_object_unref when you are finished with it.
**/
PangoFontMap *
pango_ft2_font_map_new (void)
{
static gboolean registered_modules = FALSE;
PangoFT2FontMap *ft2fontmap;
FT_Error error;
if (!registered_modules)
{
int i;
registered_modules = TRUE;
/* Make sure that the type system is initialized */
g_type_init ();
for (i = 0; _pango_included_ft2_modules[i].list; i++)
pango_module_register (&_pango_included_ft2_modules[i]);
}
ft2fontmap = g_object_new (PANGO_TYPE_FT2_FONT_MAP, NULL);
error = FT_Init_FreeType (&ft2fontmap->library);
if (error != FT_Err_Ok)
{
g_warning ("Error from FT_Init_FreeType: %s",
_pango_ft2_ft_strerror (error));
return NULL;
}
return (PangoFontMap *)ft2fontmap;
}
/**
* pango_ft2_font_map_substitute_changed:
* @fontmap: a #PangoFT2Fontmap
*
* Call this function any time the results of the
* default substitution function set with
* pango_ft2_font_map_set_default_substitute() change.
* That is, if your subsitution function will return different
* results for the same input pattern, you must call this function.
**/
void
pango_ft2_font_map_substitute_changed (PangoFT2FontMap *fontmap)
{
pango_fc_clear_fontset_hash_list (fontmap);
}
/**
* pango_ft2_font_map_set_resolution:
* @fontmap: a #PangoFT2Fontmap
* @dpi_x: dots per inch in the X direction
* @dpi_y: dots per inch in the Y direction
*
* Sets the horizontal and vertical resolutions for the fontmap.
**/
void
pango_ft2_font_map_set_resolution (PangoFT2FontMap *fontmap,
double dpi_x,
double dpi_y)
{
g_return_if_fail (PANGO_FT2_IS_FONT_MAP (fontmap));
fontmap->dpi_x = dpi_x;
fontmap->dpi_y = dpi_y;
pango_ft2_font_map_substitute_changed (fontmap);
}
/**
* pango_ft2_font_map_create_context:
* @fontmap: a #PangoFT2Fontmap
*
* Create a #PangoContext for the given fontmap.
*
* Return value: the newly created context; free with g_object_unref().
**/
PangoContext *
pango_ft2_font_map_create_context (PangoFT2FontMap *fontmap)
{
PangoContext *context;
g_return_val_if_fail (PANGO_FT2_IS_FONT_MAP (fontmap), NULL);
context = pango_context_new ();
pango_context_set_font_map (context, PANGO_FONT_MAP (fontmap));
return context;
}
/**
* pango_ft2_get_context:
* @dpi_x: the horizontal dpi of the target device
* @dpi_y: the vertical dpi of the target device
*
* Retrieves a #PangoContext for the default PangoFT2 fontmap
* (see pango_ft2_fontmap_get_for_display()) and sets the resolution
* for the default fontmap to @dpi_x by @dpi_y.
*
* Use of this function is discouraged, see pango_ft2_fontmap_create_context()
* instead.
*
* Return value: the new #PangoContext
**/
PangoContext *
pango_ft2_get_context (double dpi_x, double dpi_y)
{
PangoFontMap *fontmap;
fontmap = pango_ft2_font_map_for_display ();
pango_ft2_font_map_set_resolution (PANGO_FT2_FONT_MAP (fontmap), dpi_x, dpi_y);
return pango_ft2_font_map_create_context (PANGO_FT2_FONT_MAP (fontmap));
}
/**
* pango_ft2_font_map_for_display:
*
* Returns a #PangoFT2FontMap. This font map is cached and should
* not be freed. If the font map is no longer needed, it can
* be released with pango_ft2_shutdown_display().
*
* Returns: a #PangoFT2FontMap.
**/
PangoFontMap *
pango_ft2_font_map_for_display (void)
{
if (pango_ft2_global_fontmap != NULL)
return PANGO_FONT_MAP (pango_ft2_global_fontmap);
pango_ft2_global_fontmap = (PangoFT2FontMap *)pango_ft2_font_map_new ();
return PANGO_FONT_MAP (pango_ft2_global_fontmap);
}
/**
* pango_ft2_shutdown_display:
*
* Free the global fontmap. (See pango_ft2_font_map_for_display())
**/
void
pango_ft2_shutdown_display (void)
{
if (pango_ft2_global_fontmap)
{
pango_fc_font_map_cache_clear (pango_ft2_global_fontmap);
g_object_unref (G_OBJECT (pango_ft2_global_fontmap));
pango_ft2_global_fontmap = NULL;
}
}
FT_Library
_pango_ft2_font_map_get_library (PangoFontMap *fontmap)
{
PangoFT2FontMap *ft2fontmap = (PangoFT2FontMap *)fontmap;
return ft2fontmap->library;
}
static void
pango_fc_do_finalize (PangoFT2FontMap *fontmap)
{
FT_Done_FreeType (fontmap->library);
}
static void
pango_fc_default_substitute (PangoFT2FontMap *fontmap,
FcPattern *pattern)
{
FcValue v;
FcConfigSubstitute (NULL, pattern, FcMatchPattern);
if (fontmap->substitute_func)
fontmap->substitute_func (pattern, fontmap->substitute_data);
FcDefaultSubstitute (pattern);
if (FcPatternGet (pattern, FC_DPI, 0, &v) == FcResultNoMatch)
FcPatternAddDouble (pattern, FC_DPI, fontmap->dpi_y);
}
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