[2bf92f2] | 1 | import wx |
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| 2 | import matplotlib |
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| 3 | matplotlib.interactive(False) |
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| 4 | #Use the WxAgg back end. The Wx one takes too long to render |
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| 5 | matplotlib.use('WXAgg') |
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| 6 | from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg |
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| 7 | from matplotlib.figure import Figure |
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| 8 | import os |
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| 9 | |
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| 10 | from canvas import FigureCanvas |
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| 11 | #TODO: make the plottables interactive |
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[057210c] | 12 | from plottables import Graph |
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[2bf92f2] | 13 | |
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| 14 | def show_tree(obj,d=0): |
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| 15 | """Handy function for displaying a tree of graph objects""" |
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| 16 | print "%s%s" % ("-"*d,obj.__class__.__name__) |
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| 17 | if 'get_children' in dir(obj): |
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| 18 | for a in obj.get_children(): show_tree(a,d+1) |
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| 19 | |
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| 20 | |
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| 21 | |
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| 22 | class PlotPanel(wx.Panel): |
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| 23 | """ |
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| 24 | The PlotPanel has a Figure and a Canvas. OnSize events simply set a |
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| 25 | flag, and the actually redrawing of the |
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| 26 | figure is triggered by an Idle event. |
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| 27 | """ |
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| 28 | def __init__(self, parent, id = -1, color = None,\ |
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| 29 | dpi = None, **kwargs): |
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| 30 | wx.Panel.__init__(self, parent, id = id, **kwargs) |
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| 31 | |
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| 32 | self.figure = Figure(None, dpi) |
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| 33 | #self.figure = pylab.Figure(None, dpi) |
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| 34 | #self.canvas = NoRepaintCanvas(self, -1, self.figure) |
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| 35 | self.canvas = FigureCanvas(self, -1, self.figure) |
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| 36 | self.SetColor(color) |
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| 37 | #self.Bind(wx.EVT_IDLE, self._onIdle) |
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| 38 | #self.Bind(wx.EVT_SIZE, self._onSize) |
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| 39 | self._resizeflag = True |
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| 40 | self._SetSize() |
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| 41 | self.subplot = self.figure.add_subplot(111) |
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| 42 | self.figure.subplots_adjust(left=.2, bottom=.2) |
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| 43 | self.yscale = 'linear' |
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| 44 | |
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| 45 | sizer = wx.BoxSizer(wx.VERTICAL) |
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| 46 | sizer.Add(self.canvas,1,wx.EXPAND) |
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| 47 | self.SetSizer(sizer) |
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| 48 | |
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[057210c] | 49 | # Graph object to manage the plottables |
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| 50 | self.graph = Graph() |
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[2bf92f2] | 51 | |
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| 52 | self.Bind(wx.EVT_CONTEXT_MENU, self.onContextMenu) |
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| 53 | |
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| 54 | # Define some constants |
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| 55 | self.colorlist = ['b','g','r','c','m','y'] |
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| 56 | self.symbollist = ['o','x','^','v','<','>','+','s','d','D','h','H','p'] |
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| 57 | |
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| 58 | def set_yscale(self, scale='linear'): |
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| 59 | self.subplot.set_yscale(scale) |
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| 60 | self.yscale = scale |
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| 61 | |
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| 62 | def get_yscale(self): |
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| 63 | return self.yscale |
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| 64 | |
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| 65 | def SetColor(self, rgbtuple): |
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| 66 | """Set figure and canvas colours to be the same""" |
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| 67 | if not rgbtuple: |
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| 68 | rgbtuple = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BTNFACE).Get() |
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| 69 | col = [c/255.0 for c in rgbtuple] |
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| 70 | self.figure.set_facecolor(col) |
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| 71 | self.figure.set_edgecolor(col) |
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| 72 | self.canvas.SetBackgroundColour(wx.Colour(*rgbtuple)) |
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| 73 | |
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| 74 | def _onSize(self, event): |
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| 75 | self._resizeflag = True |
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| 76 | |
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| 77 | def _onIdle(self, evt): |
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| 78 | if self._resizeflag: |
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| 79 | self._resizeflag = False |
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| 80 | self._SetSize() |
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| 81 | self.draw() |
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| 82 | |
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| 83 | def _SetSize(self, pixels = None): |
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| 84 | """ |
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| 85 | This method can be called to force the Plot to be a desired size, which defaults to |
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| 86 | the ClientSize of the panel |
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| 87 | """ |
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| 88 | if not pixels: |
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| 89 | pixels = self.GetClientSize() |
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| 90 | self.canvas.SetSize(pixels) |
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| 91 | self.figure.set_size_inches(pixels[0]/self.figure.get_dpi(), |
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| 92 | pixels[1]/self.figure.get_dpi()) |
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| 93 | |
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| 94 | def draw(self): |
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| 95 | """Where the actual drawing happens""" |
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| 96 | self.figure.canvas.draw_idle() |
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| 97 | |
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| 98 | |
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| 99 | |
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| 100 | def onSaveImage(self, evt): |
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| 101 | #figure.savefig |
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| 102 | print "Save image not implemented" |
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| 103 | path = None |
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| 104 | dlg = wx.FileDialog(self, "Choose a file", os.getcwd(), "", "*.png", wx.SAVE) |
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| 105 | if dlg.ShowModal() == wx.ID_OK: |
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| 106 | path = dlg.GetPath() |
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| 107 | mypath = os.path.basename(path) |
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| 108 | print path |
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| 109 | dlg.Destroy() |
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| 110 | if not path == None: |
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| 111 | self.subplot.figure.savefig(path,dpi=300, facecolor='w', edgecolor='w', |
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| 112 | orentation='portrait', papertype=None, format='png') |
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| 113 | |
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| 114 | def onContextMenu(self, event): |
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| 115 | """ |
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| 116 | Default context menu for a plot panel |
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| 117 | """ |
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| 118 | # Slicer plot popup menu |
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| 119 | slicerpop = wx.Menu() |
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| 120 | slicerpop.Append(313,'&Save image', 'Save image as PNG') |
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| 121 | wx.EVT_MENU(self, 313, self.onSaveImage) |
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| 122 | |
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| 123 | pos = event.GetPosition() |
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| 124 | pos = self.ScreenToClient(pos) |
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| 125 | self.PopupMenu(slicerpop, pos) |
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| 126 | |
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| 127 | |
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| 128 | ## The following is plottable functionality |
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| 129 | |
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| 130 | |
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| 131 | def properties(self,prop): |
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| 132 | """Set some properties of the graph. |
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| 133 | |
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| 134 | The set of properties is not yet determined. |
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| 135 | """ |
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| 136 | # The particulars of how they are stored and manipulated (e.g., do |
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| 137 | # we want an inventory internally) is not settled. I've used a |
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| 138 | # property dictionary for now. |
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| 139 | # |
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| 140 | # How these properties interact with a user defined style file is |
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| 141 | # even less clear. |
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| 142 | |
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| 143 | # Properties defined by plot |
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| 144 | self.subplot.set_xlabel(r"$%s$" % prop["xlabel"]) |
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| 145 | self.subplot.set_ylabel(r"$%s$" % prop["ylabel"]) |
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| 146 | self.subplot.set_title(prop["title"]) |
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| 147 | |
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| 148 | # Properties defined by user |
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| 149 | #self.axes.grid(True) |
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| 150 | |
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| 151 | def clear(self): |
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| 152 | """Reset the plot""" |
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| 153 | |
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| 154 | # TODO: Redraw is brutal. Render to a backing store and swap in |
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| 155 | # TODO: rather than redrawing on the fly. |
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| 156 | self.subplot.clear() |
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| 157 | self.subplot.hold(True) |
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| 158 | |
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| 159 | |
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| 160 | def render(self): |
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| 161 | """Commit the plot after all objects are drawn""" |
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| 162 | # TODO: this is when the backing store should be swapped in. |
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| 163 | from matplotlib.font_manager import FontProperties |
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| 164 | self.subplot.legend(prop=FontProperties(size=10)) |
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| 165 | #self.subplot.legend() |
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| 166 | pass |
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| 167 | |
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| 168 | def xaxis(self,label,units): |
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| 169 | """xaxis label and units. |
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| 170 | |
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| 171 | Axis labels know about units. |
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| 172 | |
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| 173 | We need to do this so that we can detect when axes are not |
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| 174 | commesurate. Currently this is ignored other than for formatting |
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| 175 | purposes. |
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| 176 | """ |
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| 177 | if units != "": label = label + " (" + units + ")" |
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| 178 | self.subplot.set_xlabel(label) |
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| 179 | pass |
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| 180 | |
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| 181 | def yaxis(self,label,units): |
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| 182 | """yaxis label and units.""" |
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| 183 | if units != "": label = label + " (" + units + ")" |
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| 184 | self.subplot.set_ylabel(label) |
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| 185 | pass |
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| 186 | |
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| 187 | def _connect_to_xlim(self,callback): |
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| 188 | """Bind the xlim change notification to the callback""" |
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| 189 | def process_xlim(axes): |
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| 190 | lo,hi = subplot.get_xlim() |
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| 191 | callback(lo,hi) |
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| 192 | self.subplot.callbacks.connect('xlim_changed',process_xlim) |
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| 193 | |
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| 194 | #def connect(self,trigger,callback): |
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| 195 | # print "PlotPanel.connect???" |
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| 196 | # if trigger == 'xlim': self._connect_to_xlim(callback) |
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| 197 | |
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| 198 | def points(self,x,y,dx=None,dy=None,color=0,symbol=0,label=None): |
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| 199 | """Draw markers with error bars""" |
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| 200 | self.subplot.set_yscale('linear') |
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| 201 | # Convert tuple (lo,hi) to array [(x-lo),(hi-x)] |
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| 202 | if dx != None and type(dx) == type(()): |
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| 203 | dx = nx.vstack((x-dx[0],dx[1]-x)).transpose() |
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| 204 | if dy != None and type(dy) == type(()): |
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| 205 | dy = nx.vstack((y-dy[0],dy[1]-y)).transpose() |
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| 206 | |
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| 207 | if dx==None and dy==None: |
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| 208 | h = self.subplot.plot(x,y,color=self._color(color), |
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| 209 | marker=self._symbol(symbol),linestyle='',label=label) |
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| 210 | else: |
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| 211 | self.subplot.errorbar(x, y, yerr=dy, xerr=None, |
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| 212 | ecolor=self._color(color), capsize=2,linestyle='', barsabove=False, |
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| 213 | marker=self._symbol(symbol), |
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| 214 | lolims=False, uplims=False, |
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| 215 | xlolims=False, xuplims=False,label=label) |
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| 216 | |
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| 217 | self.subplot.set_yscale(self.yscale) |
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| 218 | |
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| 219 | def curve(self,x,y,dy=None,color=0,symbol=0,label=None): |
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| 220 | """Draw a line on a graph, possibly with confidence intervals.""" |
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| 221 | c = self._color(color) |
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| 222 | self.subplot.set_yscale('linear') |
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| 223 | |
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| 224 | hlist = self.subplot.plot(x,y,color=c,marker='',linestyle='-',label=label) |
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| 225 | |
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| 226 | self.subplot.set_yscale(self.yscale) |
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| 227 | |
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| 228 | def _color(self,c): |
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| 229 | """Return a particular colour""" |
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| 230 | return self.colorlist[c%len(self.colorlist)] |
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| 231 | |
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| 232 | def _symbol(self,s): |
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| 233 | """Return a particular symbol""" |
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| 234 | return self.symbollist[s%len(self.symbollist)] |
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| 235 | |
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| 236 | |
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| 237 | |
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| 238 | |
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| 239 | class NoRepaintCanvas(FigureCanvasWxAgg): |
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| 240 | """We subclass FigureCanvasWxAgg, overriding the _onPaint method, so that |
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| 241 | the draw method is only called for the first two paint events. After that, |
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| 242 | the canvas will only be redrawn when it is resized. |
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| 243 | """ |
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| 244 | def __init__(self, *args, **kwargs): |
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| 245 | FigureCanvasWxAgg.__init__(self, *args, **kwargs) |
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| 246 | self._drawn = 0 |
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| 247 | |
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| 248 | def _onPaint(self, evt): |
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| 249 | """ |
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| 250 | Called when wxPaintEvt is generated |
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| 251 | """ |
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| 252 | if not self._isRealized: |
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| 253 | self.realize() |
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| 254 | if self._drawn < 2: |
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| 255 | self.draw(repaint = False) |
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| 256 | self._drawn += 1 |
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| 257 | self.gui_repaint(drawDC=wx.PaintDC(self)) |
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| 258 | |
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