185 lines
4.9 KiB
C
185 lines
4.9 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2008 OpenedHand
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/**
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* SECTION:cogl-pango
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* @short_description: COGL-based text rendering using Pango
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*
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* FIXME
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/* This is needed to get the Pango headers to export stuff needed to
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subclass */
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#ifndef PANGO_ENABLE_BACKEND
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#define PANGO_ENABLE_BACKEND 1
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#endif
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#include <pango/pango-fontmap.h>
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#include <pango/pangocairo.h>
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#include <pango/pango-renderer.h>
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#include "cogl-pango.h"
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#include "cogl-pango-private.h"
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#include "cogl-util.h"
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#include "cogl/cogl-context-private.h"
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static GQuark cogl_pango_font_map_get_priv_key (void) G_GNUC_CONST;
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typedef struct _CoglPangoFontMapPriv
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{
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CoglContext *ctx;
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PangoRenderer *renderer;
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} CoglPangoFontMapPriv;
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static void
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free_priv (gpointer data)
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{
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CoglPangoFontMapPriv *priv = data;
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cogl_object_unref (priv->ctx);
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cogl_object_unref (priv->renderer);
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g_free (priv);
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}
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PangoFontMap *
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cogl_pango_font_map_new (void)
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{
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PangoFontMap *fm = pango_cairo_font_map_new ();
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CoglPangoFontMapPriv *priv = g_new0 (CoglPangoFontMapPriv, 1);
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_COGL_GET_CONTEXT (context, NULL);
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priv->ctx = cogl_object_ref (context);
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/* XXX: The public pango api doesn't let us sub-class
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* PangoCairoFontMap so we attach our own private data using qdata
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* for now. */
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g_object_set_qdata_full (G_OBJECT (fm),
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cogl_pango_font_map_get_priv_key (),
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priv,
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free_priv);
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return fm;
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}
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PangoContext *
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cogl_pango_font_map_create_context (CoglPangoFontMap *fm)
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{
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_COGL_RETURN_VAL_IF_FAIL (COGL_PANGO_IS_FONT_MAP (fm), NULL);
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#if PANGO_VERSION_CHECK (1, 22, 0)
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/* We can just directly use the pango context from the Cairo font
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map */
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return pango_font_map_create_context (PANGO_FONT_MAP (fm));
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#else
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return pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (fm));
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#endif
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}
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static CoglPangoFontMapPriv *
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_cogl_pango_font_map_get_priv (CoglPangoFontMap *fm)
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{
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return g_object_get_qdata (G_OBJECT (fm),
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cogl_pango_font_map_get_priv_key ());
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}
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PangoRenderer *
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_cogl_pango_font_map_get_renderer (CoglPangoFontMap *fm)
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{
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CoglPangoFontMapPriv *priv = _cogl_pango_font_map_get_priv (fm);
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if (G_UNLIKELY (!priv->renderer))
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priv->renderer = _cogl_pango_renderer_new (priv->ctx);
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return priv->renderer;
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}
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PangoRenderer *
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cogl_pango_font_map_get_renderer (CoglPangoFontMap *fm)
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{
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return _cogl_pango_font_map_get_renderer (fm);
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}
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CoglContext *
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_cogl_pango_font_map_get_cogl_context (CoglPangoFontMap *fm)
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{
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CoglPangoFontMapPriv *priv = _cogl_pango_font_map_get_priv (fm);
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return priv->ctx;
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}
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void
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cogl_pango_font_map_set_resolution (CoglPangoFontMap *font_map,
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double dpi)
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{
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_COGL_RETURN_IF_FAIL (COGL_PANGO_IS_FONT_MAP (font_map));
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pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (font_map), dpi);
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}
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void
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cogl_pango_font_map_clear_glyph_cache (CoglPangoFontMap *fm)
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{
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PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
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_cogl_pango_renderer_clear_glyph_cache (COGL_PANGO_RENDERER (renderer));
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}
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void
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cogl_pango_font_map_set_use_mipmapping (CoglPangoFontMap *fm,
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CoglBool value)
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{
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PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
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_cogl_pango_renderer_set_use_mipmapping (COGL_PANGO_RENDERER (renderer),
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value);
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}
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CoglBool
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cogl_pango_font_map_get_use_mipmapping (CoglPangoFontMap *fm)
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{
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PangoRenderer *renderer = _cogl_pango_font_map_get_renderer (fm);
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return
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_cogl_pango_renderer_get_use_mipmapping (COGL_PANGO_RENDERER (renderer));
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}
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static GQuark
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cogl_pango_font_map_get_priv_key (void)
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{
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static GQuark priv_key = 0;
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if (G_UNLIKELY (priv_key == 0))
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priv_key = g_quark_from_static_string ("CoglPangoFontMap");
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return priv_key;
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}
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