# vim:set et sts=4 sw=4:

#

# ibus - The Input Bus

#

# Copyright (c) 2007-2010 Peng Huang <shawn.p.huang@gmail.com>

# Copyright (c) 2007-2010 Red Hat, Inc.

#

# 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

__all__ = (

        "PangoAttrList",

    )

import pango

import ibus

class PangoAttrList(pango.AttrList):

    def __init__(self, attrs, unistr):

        super(PangoAttrList, self).__init__()

        if attrs == None:

            return

        offsets = []

        offset = 0

        for c in unistr:

            offsets.append(offset)

            offset += len(c.encode("utf8"))

        offsets.append(offset)

        for attr in attrs:

            pango_attr = None

            start_index = attr.start_index if attr.start_index >= 0 else 0

            end_index = attr.end_index if attr.end_index >= 0 else 0

            start_index = offsets[start_index] if start_index < len(offsets) else offsets[-1]

            end_index = offsets[end_index] if end_index < len(offsets) else offsets[-1]

            if attr.type == ibus.ATTR_TYPE_FOREGROUND:

                r = (attr.value & 0x00ff0000) >> 8

                g = (attr.value & 0x0000ff00)

                b = (attr.value & 0x000000ff) << 8

                pango_attr = pango.AttrForeground(r, g, b,

                    start_index, end_index)

            elif attr.type == ibus.ATTR_TYPE_BACKGROUND:

                r = (attr.value & 0x00ff0000) >> 8

                g = (attr.value & 0x0000ff00)

                b = (attr.value & 0x000000ff) << 8

                pango_attr = pango.AttrBackground(r, g, b,

                    start_index, end_index)

            elif attr.type == ibus.ATTR_TYPE_UNDERLINE:

                pango_attr = pango.AttrUnderline(int(attr.value),

                    start_index, end_index)

            if pango_attr != None:

                self.insert(pango_attr)