# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

import os
import time
import logging
from gettext import gettext as _

import gobject
import gtk
import hulahop
import xpcom
from xpcom.nsError import *
from xpcom import components
from xpcom.components import interfaces
from hulahop.webview import WebView

from sugar.datastore import datastore
from sugar import profile
from sugar import env
from sugar.activity import activity
from sugar.graphics import style

_ZOOM_AMOUNT = 0.1

class Browser(WebView):
    def __init__(self):
        WebView.__init__(self)

    def do_setup(self):
        WebView.do_setup(self)

    def zoom_in(self):
        contentViewer = self.doc_shell.queryInterface( \
                interfaces.nsIDocShell).contentViewer
        if contentViewer is not None:
            markupDocumentViewer = contentViewer.queryInterface( \
                    interfaces.nsIMarkupDocumentViewer)
            markupDocumentViewer.fullZoom += _ZOOM_AMOUNT

    def zoom_out(self):
        contentViewer = self.doc_shell.queryInterface( \
                interfaces.nsIDocShell).contentViewer
        if contentViewer is not None:
            markupDocumentViewer = contentViewer.queryInterface( \
                    interfaces.nsIMarkupDocumentViewer)
            markupDocumentViewer.fullZoom -= _ZOOM_AMOUNT