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# Mantid Repository : https://github.com/mantidproject/mantid
#
# Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
# NScD Oak Ridge National Laboratory, European Spallation Source
# & Institut Laue - Langevin
# SPDX - License - Identifier: GPL - 3.0 +
# This file is part of the mantid workbench.
#
#
from __future__ import (absolute_import, division, print_function)
from qtpy.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout
from mantidqt.MPLwidgets import FigureCanvas
from .toolbar import SliceViewerNavigationToolbar
from matplotlib import gridspec
from mantidqt.widgets.colorbar.colorbar import ColorbarWidget
from matplotlib.transforms import Bbox, BboxTransform
import numpy as np
from .samplingimage import imshow_sampling
def __init__(self, presenter, dims_info, parent=None):
super(SliceViewerView, self).__init__(parent)
self.setWindowTitle("SliceViewer")
self.setWindowFlags(Qt.Window)
self.setAttribute(Qt.WA_DeleteOnClose, True)
# Dimension widget
self.dimensions = DimensionWidget(dims_info, parent=self)
self.dimensions.dimensionsChanged.connect(self.presenter.new_plot)
self.dimensions.valueChanged.connect(self.presenter.update_plot_data)
# MPL figure + colorbar
self.mpl_layout = QHBoxLayout()
self.fig.set_facecolor(self.palette().window().color().getRgbF())
self.fig.set_tight_layout(True)
self.canvas = FigureCanvas(self.fig)
self.canvas.mpl_connect('motion_notify_event', self.mouse_move)
self.create_axes()
self.mpl_layout.addWidget(self.canvas)
self.colorbar = ColorbarWidget(self)
self.colorbar.colorbarChanged.connect(self.update_data_clim)
self.colorbar.colorbarChanged.connect(self.update_line_plot_limits)
self.mpl_toolbar = SliceViewerNavigationToolbar(self.canvas, self)
self.mpl_toolbar.gridClicked.connect(self.toggle_grid)
self.mpl_toolbar.linePlotsClicked.connect(self.line_plots_toggle)
self.mpl_toolbar.plotOptionsChanged.connect(self.colorbar.mappable_changed)
# layout
self.layout = QVBoxLayout(self)
self.layout.addWidget(self.dimensions)
self.layout.addWidget(self.mpl_toolbar)
self.layout.addLayout(self.mpl_layout, stretch=1)
def create_axes(self):
self.fig.clf()
if self.line_plots:
gs = gridspec.GridSpec(2, 2,
width_ratios=[1, 4],
height_ratios=[4, 1],
wspace=0.0, hspace=0.0)
self.ax = self.fig.add_subplot(gs[1], projection='mantid')
self.ax.xaxis.set_visible(False)
self.ax.yaxis.set_visible(False)
self.axx=self.fig.add_subplot(gs[3], sharex=self.ax)
self.axx.yaxis.tick_right()
self.axy=self.fig.add_subplot(gs[0], sharey=self.ax)
self.axy.xaxis.tick_top()
else:
self.ax = self.fig.add_subplot(111, projection='mantid')
self.canvas.draw_idle()
def plot_MDH(self, ws, **kwargs):
clears the plot and creates a new one using a MDHistoWorkspace
self.im = self.ax.imshow(ws, origin='lower', aspect='auto',
transpose=self.dimensions.transpose,
self.draw_plot()
def plot_matrix(self, ws, **kwargs):
"""
clears the plot and creates a new one using a MatrixWorkspace
"""
self.ax.clear()
self.im = imshow_sampling(self.ax, ws, origin='lower', aspect='auto',
interpolation='none',
transpose=self.dimensions.transpose,
norm=self.colorbar.get_norm(), **kwargs)
self.im._resample_image()
self.draw_plot()
def draw_plot(self):
self.ax.set_title('')
self.colorbar.set_mappable(self.im)
self.colorbar.update_clim()
self.mpl_toolbar.update() # clear nav stack
self.canvas.draw_idle()
def update_plot_data(self, data):
"""
This just updates the plot data without creating a new plot
"""
self.im.set_data(data.T)
def line_plots_toggle(self, state):
self.line_plots = state
self.clear_line_plots()
self.presenter.line_plots()
def clear_line_plots(self):
try: # clear old plots
except AttributeError:
pass
def update_data_clim(self):
self.im.set_clim(self.colorbar.colorbar.get_clim()) # force clim update, needed for RHEL7
self.canvas.draw_idle()
def update_line_plot_limits(self):
if self.line_plots:
self.axx.set_ylim(self.colorbar.cmin_value, self.colorbar.cmax_value)
self.axy.set_xlim(self.colorbar.cmin_value, self.colorbar.cmax_value)
def toggle_grid(self):
self.ax.grid()
self.canvas.draw_idle()
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def mouse_move(self, event):
if event.inaxes == self.ax:
if self.line_plots:
self.update_line_plots(event.xdata, event.ydata)
def plot_x_line(self, x, y):
try:
self.xfig[0].set_data(x, y)
except (AttributeError, IndexError):
self.axx.clear()
self.xfig = self.axx.plot(x, y)
self.axx.set_xlabel(self.ax.get_xlabel())
self.update_line_plot_limits()
self.canvas.draw_idle()
def plot_y_line(self, x, y):
try:
self.yfig[0].set_data(y, x)
except (AttributeError, IndexError):
self.axy.clear()
self.yfig = self.axy.plot(y, x)
self.axy.set_ylabel(self.ax.get_ylabel())
self.update_line_plot_limits()
self.canvas.draw_idle()
def update_line_plots(self, x, y):
xmin, xmax, ymin, ymax = self.im.get_extent()
arr = self.im.get_array()
data_extent = Bbox([[ymin, xmin], [ymax, xmax]])
array_extent = Bbox([[0, 0], arr.shape[:2]])
trans = BboxTransform(boxin=data_extent, boxout=array_extent)
point = trans.transform_point([y, x])
if any(np.isnan(point)):
return
i, j = point.astype(int)
if 0 <= i < arr.shape[0]:
self.plot_x_line(np.linspace(xmin, xmax, arr.shape[1]), arr[i,:])
if 0 <= j < arr.shape[1]:
self.plot_y_line(np.linspace(ymin, ymax, arr.shape[0]), arr[:,j])
def closeEvent(self, event):
self.deleteLater()
super(SliceViewerView, self).closeEvent(event)