# -*- coding: utf-8 -*-
# $Id: wuihlpgraphbase.py 62484 2016-07-22 18:35:33Z vboxsync $

"""
Test Manager Web-UI - Graph Helpers - Base Class.
"""

__copyright__ = \
"""
Copyright (C) 2012-2016 Oracle Corporation

This file is part of VirtualBox Open Source Edition (OSE), as
available from http://www.virtualbox.org. This file is free software;
you can redistribute it and/or modify it under the terms of the GNU
General Public License (GPL) as published by the Free Software
Foundation, in version 2 as it comes in the "COPYING" file of the
VirtualBox OSE distribution. VirtualBox OSE is distributed in the
hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.

The contents of this file may alternatively be used under the terms
of the Common Development and Distribution License Version 1.0
(CDDL) only, as it comes in the "COPYING.CDDL" file of the
VirtualBox OSE distribution, in which case the provisions of the
CDDL are applicable instead of those of the GPL.

You may elect to license modified versions of this file under the
terms and conditions of either the GPL or the CDDL or both.
"""
__version__ = "$Revision: 62484 $"


class WuiHlpGraphBase(object):
    """
    Base class for the Graph helpers.
    """

    ## Set of colors that can be used by child classes to color data series.
    kasColors = \
    [
        '#0000ff', # Blue
        '#00ff00', # Green
        '#ff0000', # Red
        '#000000', # Black

        '#00ffff', # Cyan/Aqua
        '#ff00ff', # Magenta/Fuchsia
        '#ffff00', # Yellow
        '#8b4513', # SaddleBrown

        '#7b68ee', # MediumSlateBlue
        '#ffc0cb', # Pink
        '#bdb76b', # DarkKhaki
        '#008080', # Teal

        '#bc8f8f', # RosyBrown
        '#000080', # Navy(Blue)
        '#dc143c', # Crimson
        '#800080', # Purple

        '#daa520', # Goldenrod
        '#40e0d0', # Turquoise
        '#00bfff', # DeepSkyBlue
        '#c0c0c0', # Silver
    ];


    def __init__(self, sId, oData, oDisp):
        self._sId           = sId;
        self._oData         = oData;
        self._oDisp         = oDisp;
        # Graph output dimensions.
        self._cxGraph       = 1024;
        self._cyGraph       = 448;
        self._cDpiGraph     = 96;
        # Other graph attributes
        self._sTitle        = None;
        self._cPtFont       = 8;

    def headerContent(self):
        """
        Returns content that goes into the HTML header.
        """
        return '';

    def renderGraph(self):
        """
        Renders the graph.
        Returning HTML.
        """
        return '<p>renderGraph needs to be overridden by the child class!</p>';

    def setTitle(self, sTitle):
        """ Sets the graph title. """
        self._sTitle = sTitle;
        return True;

    def setWidth(self, cx):
        """ Sets the graph width. """
        self._cxGraph = cx;
        return True;

    def setHeight(self, cy):
        """ Sets the graph height. """
        self._cyGraph = cy;
        return True;

    def setDpi(self, cDotsPerInch):
        """ Sets the graph DPI. """
        self._cDpiGraph = cDotsPerInch;
        return True;

    def setFontSize(self, cPtFont):
        """ Sets the default font size. """
        self._cPtFont = cPtFont;
        return True;


    @staticmethod
    def calcSeriesColor(iSeries):
        """ Returns a #rrggbb color code for the given series. """
        return WuiHlpGraphBase.kasColors[iSeries % len(WuiHlpGraphBase.kasColors)];