"""
Demo script for showing how GUI classes from pyo can be used to build
audio programs with graphical interface.

"""
import wx, time, random
from pyo import *

NCHNLS = 2

server = Server(nchnls=NCHNLS).boot()
server.start()

### A basic audio process ###
snd = SndTable([SNDS_PATH+"/transparent.aif"]*NCHNLS)
m = Metro(.125, poly=1).play()
am = Iter(m, [1,0,0,0]*4)
t2 = ExpTable([(0,1),(4096,10),(8191,10)], exp=4)
q = TrigEnv(m, t2, m.time)
pos = TrigLinseg(m, [(0.0,0.0), (m.time, 1,0)])
n = Pointer(snd, pos, mul=am)
fr = SigTo(1000, time=0.05, init=1000)
f = ButBP(n, freq=fr, q=q).out()
#pa = PeakAmp(f)
sp = Spectrum(f)
sc = Scope(f)

class MyFrame(wx.Frame):

    def __init__(self, parent, title, pos=(50, 50), size=(850, 600)):
        wx.Frame.__init__(self, parent, -1, title, pos, size)
        
        self.Bind(wx.EVT_CLOSE, self.on_quit)

        self.panel = wx.Panel(self)
        vmainsizer = wx.BoxSizer(wx.VERTICAL)
        mainsizer = wx.BoxSizer(wx.HORIZONTAL)
        leftbox = wx.BoxSizer(wx.VERTICAL)
        midbox = wx.BoxSizer(wx.VERTICAL)
        rightbox = wx.BoxSizer(wx.VERTICAL)

        ### PyoGuiControlSlider - logarithmic scale ###
        sizer1 = self.createFreqSlider()

        ### PyoGuiControlSlider - dB scale & VuMeter ###
        sizer2 = self.createOutputBox()

        ### PyoGuiGrapher - Filter's Q automation ###
        sizer3 = self.createGrapher()

        ### PyoGuiMultiSlider - Step Sequencer ###
        sizer4 = self.createMultiSlider()

        ### PyoGuiSpectrum - Frequency display ###
        sizer5 = self.createSpectrum()

        ### PyoGuiScope - oscilloscope display ###
        sizer6 = self.createScope()

        ### PyoGuiSndView - Soundfile display ###
        sizer7 = self.createSndView()

        leftbox.Add(sizer1, 0, wx.ALL | wx.EXPAND, 5)
        leftbox.Add(sizer3, 1, wx.ALL | wx.EXPAND, 5)
        leftbox.Add(sizer4, 1, wx.ALL | wx.EXPAND, 5)

        midbox.Add(sizer5, 1, wx.ALL | wx.EXPAND, 5)
        midbox.Add(sizer6, 1, wx.ALL | wx.EXPAND, 5)

        rightbox.Add(sizer2, 1, wx.ALL | wx.EXPAND, 5)

        mainsizer.Add(leftbox, 1, wx.ALL | wx.EXPAND, 5)
        mainsizer.Add(midbox, 1, wx.ALL | wx.EXPAND, 5)
        mainsizer.Add(rightbox, 0, wx.ALL | wx.EXPAND, 5)
        vmainsizer.Add(mainsizer, 1, wx.ALL | wx.EXPAND, 5)
        vmainsizer.Add(sizer7, 1, wx.ALL | wx.EXPAND, 5)
        self.panel.SetSizerAndFit(vmainsizer)

    def on_quit(self, evt):
        server.stop()
        time.sleep(0.25)
        self.Destroy()

    def createFreqSlider(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiControlSlider: filter's center frequency (log scale)")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.freq = PyoGuiControlSlider(parent=self.panel,
                                        minvalue=20,
                                        maxvalue=20000,
                                        init=1000,
                                        pos=(0, 0),
                                        size=(200, 16),
                                        log=True,
                                        integer=False,
                                        powoftwo=False,
                                        orient=wx.HORIZONTAL)
        #print self.freq.getRange()
        #print self.freq.isPowOfTwo()
        self.freq.Bind(EVT_PYO_GUI_CONTROL_SLIDER, self.changeFreq)
        sizer.Add(self.freq, 0, wx.ALL | wx.EXPAND, 5)
        return sizer

    def createOutputBox(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "dB slider - PyoGuiVuMeter")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        sizer1 = wx.BoxSizer(wx.HORIZONTAL)
        self.amp = PyoGuiControlSlider(parent=self.panel,
                                        minvalue=-60,
                                        maxvalue=18,
                                        init=-12,
                                        pos=(0, 0),
                                        size=(200, 16),
                                        log=False,
                                        integer=False,
                                        powoftwo=False,
                                        orient=wx.VERTICAL)
        self.amp.Bind(EVT_PYO_GUI_CONTROL_SLIDER, self.changeGain)
        self.meter = PyoGuiVuMeter(parent=self.panel,
                                   nchnls=NCHNLS,
                                   pos=(0, 0),
                                   size=(5*NCHNLS, 200),
                                   orient=wx.VERTICAL,
                                   style=0)
        self.meter.setNchnls(8)
        # Register the VuMeter in the Server object.
        server.setMeter(self.meter)
        # or register its `setRms` method in a PeakAmp object.
        # pa.setFunction(self.meter.setRms)

        sizer1.Add(self.amp, 0, wx.ALL | wx.EXPAND, 5)
        sizer1.Add(self.meter, 0, wx.ALL | wx.EXPAND, 5)
        sizer.Add(sizer1, 1, wx.CENTER | wx.ALL, 5)
        return sizer

    def createGrapher(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiGrapher: Filter's Q automation")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.graph = PyoGuiGrapher(parent=self.panel,
                                    xlen=8192,
                                    yrange=(1.0, 10.0),
                                    init=[(0.0, 0.0), (1.0, 1.0)],
                                    mode=2,
                                    exp=t2.exp,
                                    inverse=True,
                                    tension=0.75,
                                    bias=8.0,
                                    size=(300,100),
                                    style=0)
        self.graph.setValues(t2.getPoints())
        self.graph.setYrange((0.1, 20))
        self.graph.setInverse(False)
        self.graph.Bind(EVT_PYO_GUI_GRAPHER, self.changeGraph)
        sizer.Add(self.graph, 1, wx.ALL | wx.EXPAND, 5)
        return sizer

    def createMultiSlider(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiMultiSlider: Step Sequencer")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.steps = PyoGuiMultiSlider(parent=self.panel,
                                    xlen=16,
                                    yrange=(0, 1),
                                    init=[1,0,0,0]*4,
                                    size=(300,100),
                                    style=0)
        self.steps.setYrange((0, 2))
        self.steps.setValues([random.uniform(0, 2) for i in range(16)])
        self.steps.Bind(EVT_PYO_GUI_MULTI_SLIDER, self.changeSteps)
        sizer.Add(self.steps, 1, wx.ALL | wx.EXPAND, 5)
        return sizer

    def createSpectrum(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiSpectrum: Frequency display")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.spectrum = PyoGuiSpectrum(parent=self.panel,
                                    lowfreq=0,
                                    highfreq=22050,
                                    fscaling=1,
                                    mscaling=1,
                                    size=(300,150),
                                    style=0)
        self.spectrum.setAnalyzer(sp)
        sizer.Add(self.spectrum, 1, wx.ALL | wx.EXPAND, 5)
        return sizer

    def createScope(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiScope: Oscilloscope display")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.scope = PyoGuiScope(parent=self.panel,
                                    length=0.05,
                                    gain=1,
                                    size=(300,150),
                                    style=0)
        self.scope.setAnalyzer(sc)
        self.scope.setLength(0.05)
        self.scope.setGain(0.67)
        sizer.Add(self.scope, 1, wx.ALL | wx.EXPAND, 5)
        return sizer

    def createSndView(self):
        sizer = wx.BoxSizer(wx.VERTICAL)
        label = wx.StaticText(self.panel, -1, "PyoGuiSndView: Soundfile display")
        sizer.Add(label, 0, wx.CENTER|wx.ALL, 5)
        self.sndview = PyoGuiSndView(parent=self.panel,
                                    size=(300,200),
                                    style=0)
        self.sndview.setTable(snd)
        self.sndview.setSelection(0.51, 0.76)
        self.sndview.Bind(EVT_PYO_GUI_SNDVIEW_MOUSE_POSITION, self.mousePos)
        self.sndview.Bind(EVT_PYO_GUI_SNDVIEW_SELECTION, self.sndSelection)
        sizer.Add(self.sndview, 1, wx.ALL | wx.EXPAND, 5)
        return sizer

    def changeFreq(self, evt):
        fr.value = evt.value

    def changeGain(self, evt):
        am.mul = pow(10, evt.value * 0.05)

    def changeGraph(self, evt):
        t2.replace(evt.value)

    def changeSteps(self, evt):
        am.setChoice(evt.value)

    def mousePos(self, evt):
        print((evt.value))

    def sndSelection(self, evt):
        pos.replace([(0.0, evt.value[0]), (m.time, evt.value[1])])

app = wx.App(False)
mainFrame = MyFrame(None, title='Test Pyo GUI objects')
mainFrame.Show()
app.MainLoop()
