gimp/app/text/gimpfontlist.c

264 lines
7.3 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpfontlist.c
* Copyright (C) 2003-2004 Michael Natterer <mitch@gimp.org>
* Sven Neumann <sven@gimp.org>
* Manish Singh <yosh@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <pango/pangocairo.h>
#include <pango/pangofc-fontmap.h>
#include <gegl.h>
#include "text-types.h"
#include "gimpfont.h"
#include "gimpfontlist.h"
#include "gimp-intl.h"
/* Use fontconfig directly for speed. We can use the pango stuff when/if
* fontconfig/pango get more efficient.
*/
#define USE_FONTCONFIG_DIRECTLY
#ifdef USE_FONTCONFIG_DIRECTLY
#include <fontconfig/fontconfig.h>
#endif
static void gimp_font_list_add_font (GimpFontList *list,
PangoContext *context,
PangoFontDescription *desc);
static void gimp_font_list_load_names (GimpFontList *list,
PangoFontMap *fontmap,
PangoContext *context);
G_DEFINE_TYPE (GimpFontList, gimp_font_list, GIMP_TYPE_LIST)
static void
gimp_font_list_class_init (GimpFontListClass *klass)
{
}
static void
gimp_font_list_init (GimpFontList *list)
{
}
GimpContainer *
gimp_font_list_new (gdouble xresolution,
gdouble yresolution)
{
GimpFontList *list;
g_return_val_if_fail (xresolution > 0.0, NULL);
g_return_val_if_fail (yresolution > 0.0, NULL);
list = g_object_new (GIMP_TYPE_FONT_LIST,
"children-type", GIMP_TYPE_FONT,
"policy", GIMP_CONTAINER_POLICY_STRONG,
NULL);
list->xresolution = xresolution;
list->yresolution = yresolution;
return GIMP_CONTAINER (list);
}
void
gimp_font_list_restore (GimpFontList *list)
{
PangoFontMap *fontmap;
PangoContext *context;
g_return_if_fail (GIMP_IS_FONT_LIST (list));
fontmap = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
if (! fontmap)
g_error ("You are using a Pango that has been built against a cairo "
"that lacks the Freetype font backend");
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (fontmap),
list->yresolution);
context = pango_font_map_create_context (fontmap);
g_object_unref (fontmap);
gimp_container_freeze (GIMP_CONTAINER (list));
gimp_font_list_load_names (list, PANGO_FONT_MAP (fontmap), context);
g_object_unref (context);
gimp_list_sort_by_name (GIMP_LIST (list));
gimp_container_thaw (GIMP_CONTAINER (list));
}
static void
gimp_font_list_add_font (GimpFontList *list,
PangoContext *context,
PangoFontDescription *desc)
{
gchar *name;
if (! desc)
return;
name = pango_font_description_to_string (desc);
if (g_utf8_validate (name, -1, NULL))
{
GimpFont *font;
font = g_object_new (GIMP_TYPE_FONT,
"name", name,
"pango-context", context,
NULL);
gimp_container_add (GIMP_CONTAINER (list), GIMP_OBJECT (font));
g_object_unref (font);
}
g_free (name);
}
#ifdef USE_FONTCONFIG_DIRECTLY
/* We're really chummy here with the implementation. Oh well. */
/* This is copied straight from make_alias_description in pango, plus
* the gimp_font_list_add_font bits.
*/
static void
gimp_font_list_make_alias (GimpFontList *list,
PangoContext *context,
const gchar *family,
gboolean bold,
gboolean italic)
{
PangoFontDescription *desc = pango_font_description_new ();
pango_font_description_set_family (desc, family);
pango_font_description_set_style (desc,
italic ?
PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL);
pango_font_description_set_variant (desc, PANGO_VARIANT_NORMAL);
pango_font_description_set_weight (desc,
bold ?
PANGO_WEIGHT_BOLD : PANGO_WEIGHT_NORMAL);
pango_font_description_set_stretch (desc, PANGO_STRETCH_NORMAL);
gimp_font_list_add_font (list, context, desc);
pango_font_description_free (desc);
}
static void
gimp_font_list_load_aliases (GimpFontList *list,
PangoContext *context)
{
const gchar *families[] = { "Sans-serif", "Serif", "Monospace" };
gint i;
for (i = 0; i < 3; i++)
{
gimp_font_list_make_alias (list, context, families[i], FALSE, FALSE);
gimp_font_list_make_alias (list, context, families[i], TRUE, FALSE);
gimp_font_list_make_alias (list, context, families[i], FALSE, TRUE);
gimp_font_list_make_alias (list, context, families[i], TRUE, TRUE);
}
}
static void
gimp_font_list_load_names (GimpFontList *list,
PangoFontMap *fontmap,
PangoContext *context)
{
FcObjectSet *os;
FcPattern *pat;
FcFontSet *fontset;
gint i;
os = FcObjectSetBuild (FC_FAMILY, FC_STYLE,
FC_SLANT, FC_WEIGHT, FC_WIDTH,
NULL);
pat = FcPatternCreate ();
fontset = FcFontList (NULL, pat, os);
FcPatternDestroy (pat);
FcObjectSetDestroy (os);
for (i = 0; i < fontset->nfont; i++)
{
PangoFontDescription *desc;
desc = pango_fc_font_description_from_pattern (fontset->fonts[i], FALSE);
gimp_font_list_add_font (list, context, desc);
pango_font_description_free (desc);
}
/* only create aliases if there is at least one font available */
if (fontset->nfont > 0)
gimp_font_list_load_aliases (list, context);
FcFontSetDestroy (fontset);
}
#else /* ! USE_FONTCONFIG_DIRECTLY */
static void
gimp_font_list_load_names (GimpFontList *list,
PangoFontMap *fontmap,
PangoContext *context)
{
PangoFontFamily **families;
PangoFontFace **faces;
gint n_families;
gint n_faces;
gint i, j;
pango_font_map_list_families (fontmap, &families, &n_families);
for (i = 0; i < n_families; i++)
{
pango_font_family_list_faces (families[i], &faces, &n_faces);
for (j = 0; j < n_faces; j++)
{
PangoFontDescription *desc;
desc = pango_font_face_describe (faces[j]);
gimp_font_list_add_font (list, context, desc);
pango_font_description_free (desc);
}
}
g_free (families);
}
#endif /* USE_FONTCONFIG_DIRECTLY */