/* vim:set et sts=4 sw=4:
*
* ibus - The Input Bus
*
* Copyright(c) 2011 Peng Huang <shawn.p.huang@gmail.com>
*
* 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 2.1 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
Pango.AttrList get_pango_attr_list_from_ibus_text(IBus.Text text) {
Pango.AttrList pango_attrs = new Pango.AttrList();
unowned IBus.AttrList attrs = text.get_attributes();
if (attrs == null)
return pango_attrs;
unowned string str = text.get_text();
long nchars = str.char_count();
long[] offsets = new long[nchars + 1];
for (int i = 0; i <= nchars; i++)
offsets[i] = str.index_of_nth_char(i);
IBus.Attribute attr;
int i = 0;
while(true) {
attr = attrs.get(i++);
if (attr == null)
break;
long start_index = attr.start_index;
if (start_index <= 0) start_index = 0;
start_index = start_index <= nchars ? offsets[start_index] : offsets[-1];
long end_index = attr.end_index;
if (end_index <= 0) end_index = 0;
end_index = end_index <= nchars ? offsets[end_index] : offsets[-1];
Pango.Attribute pango_attr = null;
switch(attr.type) {
case IBus.AttrType.FOREGROUND:
{
uint16 r = (uint16)((attr.value & 0x00ff0000) >> 8);
uint16 g = (uint16)(attr.value & 0x0000ff00);
uint16 b = (uint16)((attr.value & 0x000000ff) << 8);
pango_attr = Pango.attr_foreground_new(r, g, b);
break;
}
case IBus.AttrType.BACKGROUND:
{
uint16 r = (uint16)((attr.value & 0x00ff0000) >> 8);
uint16 g = (uint16)(attr.value & 0x0000ff00);
uint16 b = (uint16)((attr.value & 0x000000ff) << 8);
pango_attr = Pango.attr_background_new(r, g, b);
break;
}
case IBus.AttrType.UNDERLINE:
{
pango_attr = Pango.attr_underline_new((Pango.Underline)attr.value);
break;
}
default:
continue;
}
pango_attr.start_index = (uint)start_index;
pango_attr.end_index = (uint)end_index;
// Transfer the ownership to pango_attrs
pango_attrs.insert((owned)pango_attr);
}
return pango_attrs;
}