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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2008 OpenedHand
*
* 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 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/>.
*/
/**
* SECTION:cogl-pango
* @short_description: COGL-based text rendering using Pango
*
* FIXME
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* This is needed to get the Pango headers to export stuff needed to
subclass */
#ifndef PANGO_ENABLE_BACKEND
#define PANGO_ENABLE_BACKEND 1
#endif
#include <pango/pango-fontmap.h>
#include <pango/pangocairo.h>
#include <pango/pango-renderer.h>
#include "cogl-pango.h"
#include "cogl-pango-private.h"
#include "cogl-util.h"
#include "cogl/cogl-context-private.h"
static GQuark cogl_pango_font_map_get_priv_key (void) G_GNUC_CONST;
typedef struct _CoglPangoFontMapPriv
{
CoglContext *ctx;
PangoRenderer *renderer;
} CoglPangoFontMapPriv;
static void
free_priv (gpointer data)
{
CoglPangoFontMapPriv *priv = data;
cogl_object_unref (priv->ctx);
cogl_object_unref (priv->renderer);
g_free (priv);
}
PangoFontMap *
cogl_pango_font_map_new (void)
{
PangoFontMap *fm = pango_cairo_font_map_new ();
CoglPangoFontMapPriv *priv = g_new0 (CoglPangoFontMapPriv, 1);
_COGL_GET_CONTEXT (context, NULL);
priv->ctx = cogl_object_ref (context);
/* XXX: The public pango api doesn't let us sub-class
* PangoCairoFontMap so we attach our own private data using qdata
* for now. */
g_object_set_qdata_full (G_OBJECT (fm),
cogl_pango_font_map_get_priv_key (),
priv,
free_priv);
return fm;
}
PangoContext *
cogl_pango_font_map_create_context (CoglPangoFontMap *fm)
{
_COGL_RETURN_VAL_IF_FAIL (COGL_PANGO_IS_FONT_MAP (fm), NULL);
/* We can just directly use the pango context from the Cairo font
map */
return pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (fm));
}
static CoglPangoFontMapPriv *
_cogl_pango_font_map_get_priv (CoglPangoFontMap *fm)
{
return g_object_get_qdata (G_OBJECT (fm),
cogl_pango_font_map_get_priv_key ());
}
PangoRenderer *
_cogl_pango_font_map_get_renderer (CoglPangoFontMap *fm)
{
CoglPangoFontMapPriv *priv = _cogl_pango_font_map_get_priv (fm);
if (G_UNLIKELY (!priv->renderer))
priv->renderer = _cogl_pango_renderer_new (priv->ctx);
return priv->renderer;
}
PangoRenderer *
cogl_pango_font_map_get_renderer (CoglPangoFontMap *fm)
{
return _cogl_pango_font_map_get_renderer (fm);
}
CoglContext *
_cogl_pango_font_map_get_cogl_context (CoglPangoFontMap *fm)
{
CoglPangoFontMapPriv *priv = _cogl_pango_font_map_get_priv (fm);
return priv->ctx;
}
void
cogl_pango_font_map_set_resolution (CoglPangoFontMap *font_map,
double dpi)
{
_COGL_RETURN_IF_FAIL (COGL_PANGO_IS_FONT_MAP (font_map));
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (font_map), dpi);
}
void
cogl_pango_font_map_clear_glyph_cache (CoglPangoFontMap *fm)
{
PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
_cogl_pango_renderer_clear_glyph_cache (COGL_PANGO_RENDERER (renderer));
}
void
cogl_pango_font_map_set_use_mipmapping (CoglPangoFontMap *fm,
CoglBool value)
{
PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
_cogl_pango_renderer_set_use_mipmapping (COGL_PANGO_RENDERER (renderer),
value);
}
CoglBool
cogl_pango_font_map_get_use_mipmapping (CoglPangoFontMap *fm)
{
PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
return
_cogl_pango_renderer_get_use_mipmapping (COGL_PANGO_RENDERER (renderer));
}
static GQuark
cogl_pango_font_map_get_priv_key (void)
{
static GQuark priv_key = 0;
if (G_UNLIKELY (priv_key == 0))
priv_key = g_quark_from_static_string ("CoglPangoFontMap");
return priv_key;
}
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