diff options
Diffstat (limited to 'pango/pango-fontset-simple.c')
| -rw-r--r-- | pango/pango-fontset-simple.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/pango/pango-fontset-simple.c b/pango/pango-fontset-simple.c new file mode 100644 index 00000000..193d448e --- /dev/null +++ b/pango/pango-fontset-simple.c @@ -0,0 +1,236 @@ +/* Pango + * pango-fontset-simple.c: + * + * Copyright (C) 2001 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" + +/* + * PangoFontset + */ + +#include "pango-types.h" +#include "pango-font-private.h" +#include "pango-fontset-simple.h" +#include "pango-impl-utils.h" + +/* {{{ PangoFontset implementation */ + +#define PANGO_FONTSET_SIMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONTSET_SIMPLE, PangoFontsetSimpleClass)) +#define PANGO_IS_FONTSET_SIMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONTSET_SIMPLE)) +#define PANGO_FONTSET_SIMPLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONTSET_SIMPLE, PangoFontsetSimpleClass)) + + +struct _PangoFontsetSimple +{ + PangoFontset parent_instance; + + GPtrArray *fonts; + GPtrArray *coverages; + PangoLanguage *language; +}; + +struct _PangoFontsetSimpleClass +{ + PangoFontsetClass parent_class; +}; + +G_DEFINE_TYPE (PangoFontsetSimple, pango_fontset_simple, PANGO_TYPE_FONTSET); + +static void +pango_fontset_simple_init (PangoFontsetSimple *fontset) +{ + fontset->fonts = g_ptr_array_new (); + fontset->coverages = g_ptr_array_new (); + fontset->language = NULL; +} + +static void +pango_fontset_simple_finalize (GObject *object) +{ + PangoFontsetSimple *fontset = PANGO_FONTSET_SIMPLE (object); + PangoCoverage *coverage; + unsigned int i; + + for (i = 0; i < fontset->fonts->len; i++) + g_object_unref (g_ptr_array_index(fontset->fonts, i)); + + g_ptr_array_free (fontset->fonts, TRUE); + + for (i = 0; i < fontset->coverages->len; i++) + { + coverage = g_ptr_array_index (fontset->coverages, i); + if (coverage) + pango_coverage_unref (coverage); + } + + g_ptr_array_free (fontset->coverages, TRUE); + + G_OBJECT_CLASS (pango_fontset_simple_parent_class)->finalize (object); +} + +static PangoFont * +pango_fontset_simple_get_font (PangoFontset *fontset, + guint wc) +{ + PangoFontsetSimple *simple = PANGO_FONTSET_SIMPLE (fontset); + PangoCoverageLevel best_level = PANGO_COVERAGE_NONE; + PangoCoverageLevel level; + PangoFont *font; + PangoCoverage *coverage; + int result = -1; + unsigned int i; + + for (i = 0; i < simple->fonts->len; i++) + { + coverage = g_ptr_array_index (simple->coverages, i); + + if (coverage == NULL) + { + font = g_ptr_array_index (simple->fonts, i); + + coverage = pango_font_get_coverage (font, simple->language); + g_ptr_array_index (simple->coverages, i) = coverage; + } + + level = pango_coverage_get (coverage, wc); + + if (result == -1 || level > best_level) + { + result = i; + best_level = level; + if (level == PANGO_COVERAGE_EXACT) + break; + } + } + + if (G_UNLIKELY (result == -1)) + return NULL; + + font = g_ptr_array_index(simple->fonts, result); + return g_object_ref (font); +} + +static PangoFontMetrics * +pango_fontset_simple_get_metrics (PangoFontset *fontset) +{ + PangoFontsetSimple *simple = PANGO_FONTSET_SIMPLE (fontset); + + if (simple->fonts->len == 1) + return pango_font_get_metrics (PANGO_FONT (g_ptr_array_index(simple->fonts, 0)), + simple->language); + + return PANGO_FONTSET_CLASS (pango_fontset_simple_parent_class)->get_metrics (fontset); +} + +static PangoLanguage * +pango_fontset_simple_get_language (PangoFontset *fontset) +{ + PangoFontsetSimple *simple = PANGO_FONTSET_SIMPLE (fontset); + + return simple->language; +} + +static void +pango_fontset_simple_foreach (PangoFontset *fontset, + PangoFontsetForeachFunc func, + gpointer data) +{ + PangoFontsetSimple *simple = PANGO_FONTSET_SIMPLE (fontset); + unsigned int i; + + for (i = 0; i < simple->fonts->len; i++) + { + if ((*func) (fontset, + g_ptr_array_index (simple->fonts, i), + data)) + return; + } +} + +static void +pango_fontset_simple_class_init (PangoFontsetSimpleClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + PangoFontsetClass *fontset_class = PANGO_FONTSET_CLASS (class); + + object_class->finalize = pango_fontset_simple_finalize; + + fontset_class->get_font = pango_fontset_simple_get_font; + fontset_class->get_metrics = pango_fontset_simple_get_metrics; + fontset_class->get_language = pango_fontset_simple_get_language; + fontset_class->foreach = pango_fontset_simple_foreach; +} + +/* }}} */ +/* {{{ Public API */ + +/** + * pango_fontset_simple_new: + * @language: a `PangoLanguage` tag + * + * Creates a new `PangoFontsetSimple` for the given language. + * + * Return value: the newly allocated `PangoFontsetSimple` + */ +PangoFontsetSimple * +pango_fontset_simple_new (PangoLanguage *language) +{ + PangoFontsetSimple *fontset; + + fontset = g_object_new (PANGO_TYPE_FONTSET_SIMPLE, NULL); + fontset->language = language; + + return fontset; +} + +/** + * pango_fontset_simple_append: + * @fontset: a `PangoFontsetSimple`. + * @font: (transfer full): a `PangoFont`. + * + * Adds a font to the fontset. + * + * The fontset takes ownership of @font. + */ +void +pango_fontset_simple_append (PangoFontsetSimple *fontset, + PangoFont *font) +{ + g_ptr_array_add (fontset->fonts, font); + g_ptr_array_add (fontset->coverages, NULL); +} + +/** + * pango_fontset_simple_size: + * @fontset: a `PangoFontsetSimple`. + * + * Returns the number of fonts in the fontset. + * + * Return value: the size of @fontset + */ +int +pango_fontset_simple_size (PangoFontsetSimple *fontset) +{ + return fontset->fonts->len; +} + +/* }}} */ + +/* vim:set foldmethod=marker expandtab: */ |