mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-28 03:51:05 +08:00
Tony S Yu
59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
import numpy as np
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try:
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from PyQt4 import QtGui
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except ImportError:
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print("Could not import PyQt4 -- skimage.viewer not available.")
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try:
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import matplotlib.pyplot as plt
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except ImportError:
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print("Could not import matplotlib -- skimage.viewer not available.")
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from ..utils import MatplotlibCanvas
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from .base import Plugin
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class PlotCanvas(MatplotlibCanvas):
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"""Canvas for displaying images.
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This canvas derives from Matplotlib, and has attributes `fig` and `ax`,
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which point to Matplotlib figure and axes.
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"""
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def __init__(self, parent, height, width, **kwargs):
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self.fig, self.ax = plt.subplots(figsize=(height, width), **kwargs)
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super(PlotCanvas, self).__init__(parent, self.fig, **kwargs)
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self.setMinimumHeight(150)
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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 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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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, height=4, width=4):
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self.canvas = PlotCanvas(self, height, width)
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self.fig = self.canvas.fig
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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.ax = self.canvas.ax
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self.layout.addWidget(self.canvas, self.row, 0)
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