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Diffstat (limited to 'libs/gtkmm2/pango/src/attriter.ccg')
-rw-r--r-- | libs/gtkmm2/pango/src/attriter.ccg | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/libs/gtkmm2/pango/src/attriter.ccg b/libs/gtkmm2/pango/src/attriter.ccg new file mode 100644 index 0000000000..b8dbba5504 --- /dev/null +++ b/libs/gtkmm2/pango/src/attriter.ccg @@ -0,0 +1,151 @@ +/* + * + * Copyright 1998-1999 The Gtk-- Development Team + * Copyright 2001 Free Software Foundation + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +namespace Pango +{ + +AttrIter::AttrIter() +: + gobject_(0) +{} + +AttrIter::AttrIter(const AttrIter& src) +: + gobject_(src.gobject_ ? pango_attr_iterator_copy(src.gobject_) : 0) +{} + +AttrIter::AttrIter(PangoAttrIterator* castitem, bool take_copy) +{ + if(take_copy) + { + if(castitem) + gobject_ = pango_attr_iterator_copy(castitem); + else + gobject_ = 0; + } + else + { + gobject_ = castitem; + } +} + +AttrIter::~AttrIter() +{ + if(gobject_) + pango_attr_iterator_destroy(gobject_); +} + +AttrIter& AttrIter::operator=(const AttrIter& src) +{ + PangoAttrIterator *const new_gobject = (src.gobject_ ? pango_attr_iterator_copy(src.gobject_) : 0); + + if(gobject_) + pango_attr_iterator_destroy(gobject_); + gobject_ = new_gobject; + + return *this; +} + +AttrIter& AttrIter::operator++() +{ + next(); + return *this; +} + +const AttrIter AttrIter::operator++(int) +{ + AttrIter previous(*this); + next(); + return previous; +} + +/* operator bool() cannot be implemented to work properly if a Pango::AttrIter is created + * from an already invalid PangoAttrIterator* because there is no way to validate it. + * Otherwise the iterator can only become invalid after some call to Pango::AttrIter::next() + * in which case gobject_ is destroyed thus marking the iterator as invalid. + */ +AttrIter::operator bool() const +{ + return (gobject_ != 0); +} + +bool AttrIter::next() +{ + if(!pango_attr_iterator_next(gobj())) + { + pango_attr_iterator_destroy(gobject_); + gobject_ = 0; // Mark as invalid. There is no other way to determine whether the iterator is valid later. + return false; + } + else + return true; +} + +FontDescription AttrIter::get_font_desc() const +{ + FontDescription desc; + pango_attr_iterator_get_font(const_cast<PangoAttrIterator*>(gobj()), desc.gobj(), 0, 0); + + // See pango ref docs for pango_attr_iterator_get_font. + pango_font_description_set_family(desc.gobj(), pango_font_description_get_family(desc.gobj())); + + return desc; +} + +Language AttrIter::get_language() const +{ + FontDescription desc; + PangoLanguage* language = 0; + + pango_attr_iterator_get_font(const_cast<PangoAttrIterator*>(gobj()), desc.gobj(), &language, 0); + + return Language(language, true); +} + +SListHandle_Attribute AttrIter::get_extra_attrs() const +{ + FontDescription desc; + GSList* extra_attrs = 0; + + pango_attr_iterator_get_font(const_cast<PangoAttrIterator*>(gobj()), desc.gobj(), 0, &extra_attrs); + + return SListHandle_Attribute(extra_attrs, Glib::OWNERSHIP_DEEP); +} + +SListHandle_Attribute AttrIter::get_attrs() const +{ + GSList* attrs = pango_attr_iterator_get_attrs( const_cast<PangoAttrIterator*>(gobj()) ); + return SListHandle_Attribute(attrs, Glib::OWNERSHIP_DEEP); +} + + +} /* namespace Pango */ + + +namespace Glib +{ + +Pango::AttrIter wrap(PangoAttrIterator* object, bool take_copy) +{ + return Pango::AttrIter(object, take_copy); +} + +} /* namespace Glib */ + |