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Diffstat (limited to 'pango/fonts.c')
| -rw-r--r-- | pango/fonts.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/pango/fonts.c b/pango/fonts.c new file mode 100644 index 00000000..473d3936 --- /dev/null +++ b/pango/fonts.c @@ -0,0 +1,167 @@ +/* Pango + * fonts.c: + * + * Copyright (C) 1999 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 "pango.h" + +/** + * pango_font_init: + * @font: a #PangoFont + * + * Initialize a #PangoFont structure. This should + * only be called from the "new" routine of code which + * is implementing a "subclass" of #PangoFont + */ +void +pango_font_init (PangoFont *font) +{ + g_return_if_fail (font != NULL); + + g_datalist_init (&font->data); + font->ref_count = 1; +} + +/** + * pango_font_ref: + * @font: a #PangoFont + * + * Increase the reference count of a #PangoFont. + */ +void +pango_font_ref (PangoFont *font) +{ + g_return_if_fail (font != NULL); + + font->ref_count++; +} + + +/** + * pango_font_unref: + * @font: a #PangoFont + * + * Decrease the reference count of a #PangoFont. + * if the result is zero, destroy the font + * and free the associated memory. + */ +void +pango_font_unref (PangoFont *font) +{ + g_return_if_fail (font != NULL); + g_return_if_fail (font->ref_count > 0); + + font->ref_count--; + if (font->ref_count == 0) + { + g_datalist_clear (&font->data); + font->klass->destroy (font); + } +} + +/** + * pango_font_set_data: + * @font: a #PangoCFont + * @key: a string identifying the type of user data. + * @data: the data to store. If %NULL, the current + * data for the key will be removed. + * @destroy_func: a function to call when the data is no + * longer stored, either because the font has + * been destroyed, or because the data has + * been replaced. This can be %NULL, in which + * case no function will be called. + * + * Associate user data, tagged with a string id, with a particular + * font. + */ +void +pango_font_set_data (PangoFont *font, + gchar *key, + gpointer data, + GDestroyNotify destroy_func) +{ + g_datalist_set_data_full (&font->data, key, data, destroy_func); +} + +/** + * pango_font_get_data: + * @font: a #PangoCFont + * @key: a string identifying the type of user data. + * + * Look up user data tagged with a particular key. + * + * Returns the data, or NULL if that key does not exist. + */ +gpointer +pango_font_get_data (PangoFont *font, + gchar *key) +{ + return g_datalist_get_data (&font->data, key); +} + +/** + * pango_cfont_init: + * @font: a #PangoCFont + * + * Initialize a #PangoCFont structure. This should + * only be called from the "new" routine of code which + * is implementing a "subclass" of #PangoCFont + */ +void +pango_cfont_init (PangoCFont *font) +{ + g_return_if_fail (font != NULL); + + font->ref_count = 1; +} + +/** + * pango_cfont_ref: + * @font: a #PangoCFont + * + * Increase the reference count of a #GScripCFont. + */ +void +pango_cfont_ref (PangoCFont *font) +{ + g_return_if_fail (font != NULL); + + font->ref_count++; +} + +/** + * pango_cfont_unref: + * @font: a #PangoCFont + * + * Decrease the reference count of a #PangoXFont. + * if the result is zero, destroy the font component + * and free the associated memory. + */ +void +pango_cfont_unref (PangoCFont *font) +{ + g_return_if_fail (font != NULL); + g_return_if_fail (font->ref_count > 0); + + font->ref_count--; + if (font->ref_count == 0) + font->klass->destroy (font); +} + + |