web/views/plots.py
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Wed, 09 May 2012 17:15:44 +0200
changeset 8394 b8b23af60019
parent 8190 2a3c1b787688
child 10609 e2d8e81bfe68
permissions -rw-r--r--
[server/hook] a tiny bit of doc about before_server_shutdown
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""basic plot views"""
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__docformat__ = "restructuredtext en"
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_ = unicode
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from logilab.common.date import datetime2ticks
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from logilab.common.deprecation import class_deprecated
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from logilab.common.registry import objectify_predicate
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from logilab.mtconverter import xml_escape
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from cubicweb.utils import UStringIO, json_dumps
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from cubicweb.predicates import multi_columns_rset
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from cubicweb.web.views import baseviews
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@objectify_predicate
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def all_columns_are_numbers(cls, req, rset=None, *args, **kwargs):
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    """accept result set with at least one line and two columns of result
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    all columns after second must be of numerical types"""
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    for etype in rset.description[0]:
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        if etype not in ('Int', 'BigInt', 'Float'):
0
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            return 0
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    return 1
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@objectify_predicate
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def second_column_is_number(cls, req, rset=None, *args, **kwargs):
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    etype = rset.description[0][1]
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    if etype not  in ('Int', 'BigInt', 'Float'):
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        return 0
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    return 1
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@objectify_predicate
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def columns_are_date_then_numbers(cls, req, rset=None, *args, **kwargs):
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    etypes = rset.description[0]
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    if etypes[0] not in ('Date', 'Datetime', 'TZDatetime'):
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        return 0
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    for etype in etypes[1:]:
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        if etype not in ('Int', 'BigInt', 'Float'):
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            return 0
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    return 1
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def filterout_nulls(abscissa, plot):
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    filtered = []
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    for x, y in zip(abscissa, plot):
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        if x is None or y is None:
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            continue
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        filtered.append( (x, y) )
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    return sorted(filtered)
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class PlotWidget(object):
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    # XXX refactor with cubicweb.web.views.htmlwidgets.HtmlWidget
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    def _initialize_stream(self, w=None):
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        if w:
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            self.w = w
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        else:
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            self._stream = UStringIO()
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            self.w = self._stream.write
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    def render(self, *args, **kwargs):
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        w = kwargs.pop('w', None)
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        self._initialize_stream(w)
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        self._render(*args, **kwargs)
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        if w is None:
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            return self._stream.getvalue()
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    def _render(self, *args, **kwargs):
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        raise NotImplementedError
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class FlotPlotWidget(PlotWidget):
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    """PlotRenderer widget using Flot"""
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    __metaclass__ = class_deprecated
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    __deprecation_warning__ = '[3.14] cubicweb.web.views.plots module is deprecated, use the jqplot cube instead'
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    onload = u"""
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var fig = jQuery('#%(figid)s');
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if (fig.attr('cubicweb:type') != 'prepared-plot') {
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    %(plotdefs)s
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    jQuery.plot(jQuery('#%(figid)s'), [%(plotdata)s],
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        {points: {show: true},
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         lines: {show: true},
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         grid: {hoverable: true},
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         /*yaxis : {tickFormatter : suffixFormatter},*/
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         xaxis: {mode: %(mode)s}});
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    jQuery('#%(figid)s').data({mode: %(mode)s, dateformat: %(dateformat)s});
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    jQuery('#%(figid)s').bind('plothover', onPlotHover);
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    fig.attr('cubicweb:type','prepared-plot');
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}
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"""
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    def __init__(self, labels, plots, timemode=False):
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        self.labels = labels
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        self.plots = plots # list of list of couples
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        self.timemode = timemode
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   111
    def dump_plot(self, plot):
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        if self.timemode:
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            plot = [(datetime2ticks(x), y) for x, y in plot]
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        return json_dumps(plot)
1892
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    def _render(self, req, width=500, height=400):
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parents: 3785
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        if req.ie_browser():
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            req.add_js('excanvas.js')
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        req.add_js(('jquery.flot.js', 'cubicweb.flot.js'))
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parents: 3097
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        figid = u'figure%s' % req.varmaker.next()
1891
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        plotdefs = []
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        plotdata = []
1892
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   123
        self.w(u'<div id="%s" style="width: %spx; height: %spx;"></div>' %
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               (figid, width, height))
1891
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   125
        for idx, (label, plot) in enumerate(zip(self.labels, self.plots)):
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   126
            plotid = '%s_%s' % (figid, idx)
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   127
            plotdefs.append('var %s = %s;' % (plotid, self.dump_plot(plot)))
3714
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Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 3689
diff changeset
   128
            # XXX ugly but required in order to not crash my demo
3cb7dcd9ae77 ugly workaround to javascript serialisation problem #481437 (not considered fixed by this changeset)
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parents: 3689
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   129
            plotdata.append("{label: '%s', data: %s}" % (label.replace(u'&', u''), plotid))
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parents: 7393
diff changeset
   130
        fmt = req.property_value('ui.date-format') # XXX datetime-format
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diff changeset
   131
        # XXX TODO make plot options customizable
1891
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parents: 1888
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   132
        req.html_headers.add_onload(self.onload %
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parents: 1888
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   133
                                    {'plotdefs': '\n'.join(plotdefs),
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                                     'figid': figid,
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                                     'plotdata': ','.join(plotdata),
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parents: 7393
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   136
                                     'mode': self.timemode and "'time'" or 'null',
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diff changeset
   137
                                     'dateformat': '"%s"' % fmt})
1892
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   138
1891
dd7c1d7715e7 [views][plots] extract the plotting mechanism in an HTMLWidget to make mit more re-usable
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1888
f36d43f00f32 [views] plot with flot and get rid of matplotlib
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parents: 1886
diff changeset
   140
class PlotView(baseviews.AnyRsetView):
7919
ae3307cac44e [view, plot] deprecate flot and encourage usage of the jqplot cube (closes #1625218)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7879
diff changeset
   141
    __metaclass__ = class_deprecated
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parents: 7879
diff changeset
   142
    __deprecation_warning__ = '[3.14] cubicweb.web.views.plots module is deprecated, use the jqplot cube instead'
3408
c92170fca813 [api] use __regid__ instead of deprecated id
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parents: 3338
diff changeset
   143
    __regid__ = 'plot'
1888
f36d43f00f32 [views] plot with flot and get rid of matplotlib
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parents: 1886
diff changeset
   144
    title = _('generic plot')
4320
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   145
    __select__ = multi_columns_rset() & all_columns_are_numbers()
1891
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parents: 1888
diff changeset
   146
    timemode = False
7390
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7166
diff changeset
   147
    paginable = False
0
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parents:
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   148
1888
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parents: 1886
diff changeset
   149
    def call(self, width=500, height=400):
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   150
        # prepare data
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parents: 3408
diff changeset
   151
        rqlst = self.cw_rset.syntax_tree()
1888
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parents: 1886
diff changeset
   152
        # XXX try to make it work with unions
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parents: 1886
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   153
        varnames = [var.name for var in rqlst.children[0].get_selected_variables()][1:]
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parents: 3408
diff changeset
   154
        abscissa = [row[0] for row in self.cw_rset]
1891
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parents: 1888
diff changeset
   155
        plots = []
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parents: 3408
diff changeset
   156
        nbcols = len(self.cw_rset.rows[0])
1891
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parents: 1888
diff changeset
   157
        for col in xrange(1, nbcols):
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parents: 3408
diff changeset
   158
            data = [row[col] for row in self.cw_rset]
1991
8a9d8f1ee100 bugfix for plots
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 1977
diff changeset
   159
            plots.append(filterout_nulls(abscissa, data))
1891
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parents: 1888
diff changeset
   160
        plotwidget = FlotPlotWidget(varnames, plots, timemode=self.timemode)
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parents: 3408
diff changeset
   161
        plotwidget.render(self._cw, width, height, w=self.w)
0
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parents:
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   162
1888
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parents: 1886
diff changeset
   163
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parents: 1886
diff changeset
   164
class TimeSeriePlotView(PlotView):
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4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   165
    __select__ = multi_columns_rset() & columns_are_date_then_numbers()
1891
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parents: 1888
diff changeset
   166
    timemode = True
1886
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
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parents: 1133
diff changeset
   167
1892
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parents: 1891
diff changeset
   168
1886
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parents: 1133
diff changeset
   169
try:
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parents: 1133
diff changeset
   170
    from GChartWrapper import Pie, Pie3D
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parents: 1133
diff changeset
   171
except ImportError:
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diff changeset
   172
    pass
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diff changeset
   173
else:
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parents: 1891
diff changeset
   174
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diff changeset
   175
    class PieChartWidget(PlotWidget):
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parents: 1891
diff changeset
   176
        def __init__(self, labels, values, pieclass=Pie, title=None):
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parents: 1891
diff changeset
   177
            self.labels = labels
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   178
            self.values = values
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diff changeset
   179
            self.pieclass = pieclass
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diff changeset
   180
            self.title = title
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parents: 1891
diff changeset
   181
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diff changeset
   182
        def _render(self, width=None, height=None):
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parents: 1891
diff changeset
   183
            piechart = self.pieclass(self.values)
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parents: 1891
diff changeset
   184
            piechart.label(*self.labels)
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parents: 1891
diff changeset
   185
            if width is not None:
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parents: 1891
diff changeset
   186
                height = height or width
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parents: 1891
diff changeset
   187
                piechart.size(width, height)
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parents: 1891
diff changeset
   188
            if self.title:
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parents: 1891
diff changeset
   189
                piechart.title(self.title)
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2161
diff changeset
   190
            self.w(u'<img src="%s" />' % xml_escape(piechart.url))
1892
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parents: 1891
diff changeset
   191
1886
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parents: 1133
diff changeset
   192
    class PieChartView(baseviews.AnyRsetView):
3408
c92170fca813 [api] use __regid__ instead of deprecated id
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parents: 3338
diff changeset
   193
        __regid__ = 'piechart'
1886
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diff changeset
   194
        pieclass = Pie
7390
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7166
diff changeset
   195
        paginable = False
1892
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parents: 1891
diff changeset
   196
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4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   197
        __select__ = multi_columns_rset() & second_column_is_number()
1886
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diff changeset
   198
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1911
diff changeset
   199
        def _guess_vid(self, row):
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parents: 3408
diff changeset
   200
            etype = self.cw_rset.description[row][0]
4045
f4a52abb6f4f cw 3.6 api update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 3890
diff changeset
   201
            if self._cw.vreg.schema.eschema(etype).final:
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1911
diff changeset
   202
                return 'final'
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
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parents: 1911
diff changeset
   203
            return 'textincontext'
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parents: 1911
diff changeset
   204
1886
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diff changeset
   205
        def call(self, title=None, width=None, height=None):
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
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parents: 1911
diff changeset
   206
            labels = []
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parents: 1911
diff changeset
   207
            values = []
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parents: 3408
diff changeset
   208
            for rowidx, (_, value) in enumerate(self.cw_rset):
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1911
diff changeset
   209
                if value is not None:
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
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parents: 1911
diff changeset
   210
                    vid = self._guess_vid(rowidx)
7393
7824d61f41a2 fix some deprecation warnings
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7390
diff changeset
   211
                    label = '%s: %s' % (self._cw.view(vid, self.cw_rset, row=rowidx, col=0),
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1911
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                                        value)
3451
6b46d73823f5 [api] work in progress, use __regid__, cw_*, etc.
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3408
diff changeset
   213
                    labels.append(label.encode(self._cw.encoding))
1956
9865daa96cd7 [views][plot] piechart view now accepts either final or non final entities in the first column
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1911
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                    values.append(value)
1892
fb80d9c434e5 [views] extract a PieWidget from pie views
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1891
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   215
            pie = PieChartWidget(labels, values, pieclass=self.pieclass,
fb80d9c434e5 [views] extract a PieWidget from pie views
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1891
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                                 title=title)
1886
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1133
diff changeset
   217
            if width is not None:
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
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parents: 1133
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                height = height or width
1892
fb80d9c434e5 [views] extract a PieWidget from pie views
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1891
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   219
            pie.render(width, height, w=self.w)
1886
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1133
diff changeset
   220
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1133
diff changeset
   221
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1133
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   222
    class PieChart3DView(PieChartView):
3408
c92170fca813 [api] use __regid__ instead of deprecated id
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3338
diff changeset
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        __regid__ = 'piechart3D'
1886
f0e28ddba7c5 [views] add pie chart views with google chart / GChartWrapper
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1133
diff changeset
   224
        pieclass = Pie3D