75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
import numpy as np
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from ..qt import QtGui
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from ..utils import new_plot
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from ..utils.canvas import BlitManager, EventManager
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from .base import Plugin
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__all__ = ['PlotPlugin']
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class PlotPlugin(Plugin):
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"""Plugin for ImageViewer that contains a plot canvas.
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Base class for plugins that contain a Matplotlib plot canvas, which can,
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for example, display an image histogram.
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See base Plugin class for additional details.
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"""
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def __init__(self, image_filter=None, height=150, width=400, **kwargs):
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super(PlotPlugin, self).__init__(image_filter=image_filter,
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height=height, width=width, **kwargs)
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self._height = height
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self._width = width
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self._blit_manager = None
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self._tools = []
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self._event_manager = None
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def attach(self, image_viewer):
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super(PlotPlugin, self).attach(image_viewer)
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# Add plot for displaying intensity profile.
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self.add_plot()
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if image_viewer.useblit:
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self._blit_manager = BlitManager(self.ax)
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self._event_manager = EventManager(self.ax)
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def redraw(self):
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"""Redraw plot."""
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self.canvas.draw_idle()
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def add_plot(self):
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self.fig, self.ax = new_plot()
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self.fig.set_figwidth(self._width / float(self.fig.dpi))
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self.fig.set_figheight(self._height / float(self.fig.dpi))
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self.canvas = self.fig.canvas
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#TODO: Converted color is slightly different than Qt background.
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qpalette = QtGui.QPalette()
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qcolor = qpalette.color(QtGui.QPalette.Window)
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bgcolor = qcolor.toRgb().value()
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if np.isscalar(bgcolor):
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bgcolor = str(bgcolor / 255.)
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self.fig.patch.set_facecolor(bgcolor)
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self.layout.addWidget(self.canvas, self.row, 0)
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def _update_original_image(self, image):
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super(PlotPlugin, self)._update_original_image(image)
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self.redraw()
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def add_tool(self, tool):
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if self._blit_manager:
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self._blit_manager.add_artists(tool.artists)
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self._tools.append(tool)
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self._event_manager.attach(tool)
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def remove_tool(self, tool):
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if tool not in self._tools:
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return
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if self._blit_manager:
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self._blit_manager.remove_artists(tool.artists)
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self._tools.remove(tool)
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self._event_manager.detach(tool)
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