from __future__ import print_function
# -----------------------------------------------------------------------
# OpenXenManager
#
# Copyright (C) 2009 Alberto Gonzalez Rodriguez alberto@pesadilla.org
# Copyright (C) 2014 Daniel Lintott <daniel@serverb.co.uk>
#
# 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 Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# -----------------------------------------------------------------------
from gi.repository import Gtk
from threading import Thread


class oxcWindowVMPerformance:
    """
    Class to manage "performance" of a VM/host
    """
    vport = None
    prevmousex = 0
    prevmousey = 0
    toggling = False
    graphtime = 0

    def on_btgraph_clicked(self, widget, data=None):
        """
        Update period time
        """
        times = {"btgraphtenmin": 5,
                 "btgraphtwohours": 60,
                 "btgraphoneweek": 3600,
                 "btgraphoneyear": 86400}
        host = self.selected_host
        ref = self.selected_ref
        if self.selected_type == "vm":
            self.builder.get_object("scrwin_diskusage").show()
            self.builder.get_object("labeldiskusage").show()
            Thread(target=self.xc_servers[host].update_performance,
                   args=(self.selected_uuid, ref, self.selected_ip, False,
                         times[gtk.Buildable.get_name(widget)])).start()
        else:
            self.builder.get_object("scrwin_diskusage").hide()
            self.builder.get_object("labeldiskusage").hide()
            Thread(target=self.xc_servers[host].update_performance,
                   args=(self.selected_uuid, ref, self.selected_ip, True,
                         times[gtk.Buildable.get_name(widget)])).start()

    def on_viewportperf_button_press_event(self, widget, event):	
        """
        Function called when you press on image
        """
        self.vport = widget
        if event.button == 1:
            # Set cursor and set actual X/Y
            widget.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.FLEUR))
            self.prevmousex = event.x_root
            self.prevmousey = event.y_root

    def on_viewportperf_button_release_event(self, widget, event):
        """
        Function called on release mouse 
        """
        self.vport = None
        if event.button == 1:
            # Disable cursor
            widget.window.set_cursor(None)

    def on_viewportperf_motion_notify_event(self, widget, event):
        """
        Function called on mouse move
        """
        if event.is_hint:
            x, y, state = event.window.get_pointer()
        else:
            state = event.state
        x, y = event.x_root, event.y_root
        if state & gtk.gdk.BUTTON1_MASK:
            offset_x = self.prevmousex - x
            offset_y = self.prevmousey - y
            self.move_image(offset_x, offset_y)
        self.prevmousex = x
        self.prevmousey = y

    def move_image(self, offset_x, offset_y):
        """
        Move image
        """
        vport = self.vport
        xadjust = vport.props.hadjustment
        newx = xadjust.value + offset_x
        yadjust = vport.props.vadjustment
        newy = yadjust.value + offset_y
        if (newx >= xadjust.lower) and \
                (newx <= (xadjust.upper - xadjust.page_size)):
            xadjust.value = newx
            vport.set_hadjustment(xadjust)
        if (newy >= yadjust.lower) and \
                (newy <= (yadjust.upper - yadjust.page_size)):
            yadjust.value = newy
            vport.set_vadjustment(yadjust)
