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Viewing changes to examples/tutorials/scipy2008/custom_overlay.py

  • Committer: Package Import Robot
  • Author(s): Andrew Starr-Bochicchio
  • Date: 2014-06-01 17:04:08 UTC
  • mfrom: (7.2.5 sid)
  • Revision ID: package-import@ubuntu.com-20140601170408-m86xvdjd83a4qon0
Tags: 4.4.1-1ubuntu1
* Merge from Debian unstable. Remaining Ubuntu changes:
 - Let the binary-predeb target work on the usr/lib/python* directory
   as we don't have usr/share/pyshared anymore.

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examples/tutorials/scipy2008/custom_overlay.py
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from numpy import linspace, sin
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from chaco.api import ArrayPlotData, Plot, AbstractOverlay
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from chaco.tools.api import PanTool
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from enable.component_editor import ComponentEditor
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from enable.api import ColorTrait
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from traits.api import Button, Float, Range, HasTraits, Instance
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from traitsui.api import Item, View, Group, HGroup, RangeEditor, \
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                                    spring, Handler
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class CustomOverlay(AbstractOverlay):
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    x = Float(10, editor=RangeEditor(low=1.0, high=600, mode="slider"))
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    y = Float(10, editor=RangeEditor(low=1.0, high=500, mode="slider"))
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    width = Range(10.0, 300, editor=RangeEditor(low=10.0, high=300, mode="slider"))
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    height = Range(10.0, 300, editor=RangeEditor(low=10.0, high=300, mode="slider"))
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    color = ColorTrait("red")
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    traits_view = View(Group(
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                        Item("x"), Item("y"), Item("width"), Item("height"),
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                        Item("color"), orientation = "vertical"
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                        ))
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    def overlay(self, component, gc, view_bounds=None, mode="normal"):
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        gc.set_fill_color(self.color_)
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        x = self.x + component.x
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        y = self.y + component.y
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        gc.rect(x, y, self.width, self.height)
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        gc.fill_path()
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    def _anytrait_changed(self):
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        self.component.request_redraw()
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class ScatterPlotHandler(Handler):
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    def object_edit_overlay_changed(self, info):
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        info.object.plot.overlays[-1].edit_traits(parent=info.ui.control)
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        return
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class ScatterPlot(HasTraits):
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    plot = Instance(Plot)
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    edit_overlay = Button('Edit Overlay')
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    traits_view = View(Item('plot', editor=ComponentEditor(), show_label=False),
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                       HGroup(spring,
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                              Item('edit_overlay', show_label=False,
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                                   emphasized=True,
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                                   height=50),
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                              spring),
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                       handler = ScatterPlotHandler,
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                       width=800, height=600, resizable=True)
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    def _plot_default(self):
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        # Create the data and the PlotData object
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        x = linspace(-14, 14, 100)
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        y = sin(x) * x**3
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        plotdata = ArrayPlotData(x = x, y = y)
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        # Create a Plot and associate it with the PlotData
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        plot = Plot(plotdata)
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        # Create a scatter plot in the Plot
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        plot.plot(("x", "y"), type="scatter", color="blue")
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        plot.tools.append(PanTool(plot))
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        # Add our custom tool to the plot
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        plot.overlays.append(CustomOverlay(plot))
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        return plot
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#===============================================================================
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# demo object that is used by the demo.py application.
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#===============================================================================
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demo = ScatterPlot()
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if __name__ == "__main__":
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    demo.configure_traits()