'''
a panel to display a given set of data in a wxframe as a heatmap, using pcolor
from the matplotlib

@author: westermann
'''

import wx
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas #todo: OW 26.10.15 needed?

class plotPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.figure = plt.Figure()
        self.subplot = self.figure.add_subplot(111)
        plt.title('test')
        self.canvas = FigureCanvas(self, -1, self.figure)  #ToDo: OW 26.10.15 Verstehen
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
        self.SetSizer(self.sizer)
        self.Fit()
        self.dataSet = []
        self.animator = animation.FuncAnimation(self.figure,self.anim, interval=1000)

    def anim(self, a):
        if(len(self.dataSet) == 0):
            return 0
        i = a % len(self.dataSet)
        obj = self.subplot.pcolor(self.dataSet[i], cmap='RdBu')
        return obj

    def add_data(self, data):
        self.dataSet.append(data)


#
#    Code for a standalone test run
#
class TestFrame(wx.Frame):
        def __init__(self,parent,title):
            wx.Frame.__init__(self,parent,title=title,size=(1000,1000))
            self.statusbar = self.CreateStatusBar()
            self.statusbar.SetStatusText('Status Bar')


if __name__ == '__main__':
    from numpy.random import rand #todo: OW 26.10.15 remove
    app = wx.App(redirect=False)
    frame = TestFrame(None, 'Debug Frame')
    panel = plotPanel(frame)
    frame.Show()
    C = rand(10,10)
    panel.add_data(C)
    C = rand(10,10)
    panel.add_data(C)
    C = rand(10,10)
    panel.add_data(C)
    app.MainLoop()