-
Notifications
You must be signed in to change notification settings - Fork 0
/
plot_widgets.py
279 lines (244 loc) · 11.9 KB
/
plot_widgets.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
from PyQt4 import QtGui, QtCore
import warnings
import pyqtgraph as pg
import numpy as np
from pyqtgraph.dockarea import Dock
class CloseableDock(Dock):
def __init__(self, *args, **kwargs):
super(CloseableDock, self).__init__(*args, **kwargs)
style = QtGui.QStyleFactory().create("windows")
icon = style.standardIcon(QtGui.QStyle.SP_TitleBarCloseButton)
button = QtGui.QPushButton(icon, "", self)
button.clicked.connect(self.close)
button.setGeometry(0, 0, 20, 20)
button.raise_()
self.closeClicked = button.clicked
def close(self):
self.setParent(None)
self.closed = True
if self._container is not self.area.topContainer:
self._container.apoptose()
class CrosshairPlotWidget(pg.PlotWidget):
def __init__(self, parametric=False, *args, **kwargs):
super(CrosshairPlotWidget, self).__init__(*args, **kwargs)
self.scene().sigMouseClicked.connect(self.toggle_search)
self.scene().sigMouseMoved.connect(self.handle_mouse_move)
self.cross_section_enabled = False
self.parametric = parametric
self.search_mode = True
self.label = None
self.selected_point = None
def set_data(self, data):
if data is not None and len(data) > 0:
self.clear()
self.plot(data)
def toggle_search(self, mouse_event):
if mouse_event.double():
if self.cross_section_enabled:
self.hide_cross_hair()
else:
self.add_cross_hair()
elif self.cross_section_enabled:
self.search_mode = not self.search_mode
if self.search_mode:
self.handle_mouse_move(mouse_event.scenePos())
def handle_mouse_move(self, mouse_event):
if self.cross_section_enabled and self.search_mode:
item = self.getPlotItem()
vb = item.getViewBox()
view_coords = vb.mapSceneToView(mouse_event)
view_x, view_y = view_coords.x(), view_coords.y()
best_guesses = []
for data_item in item.items:
if isinstance(data_item, pg.PlotDataItem):
xdata, ydata = data_item.xData, data_item.yData
index_distance = lambda i: (xdata[i]-view_x)**2 + (ydata[i] - view_y)**2
if self.parametric:
index = min(range(len(xdata)), key=index_distance)
else:
index = min(np.searchsorted(xdata, view_x), len(xdata)-1)
if index and xdata[index] - view_x > view_x - xdata[index - 1]:
index -= 1
pt_x, pt_y = xdata[index], ydata[index]
best_guesses.append(((pt_x, pt_y), index_distance(index)))
if not best_guesses:
return
(pt_x, pt_y), _ = min(best_guesses, key=lambda x: x[1])
self.selected_point = (pt_x, pt_y)
self.v_line.setPos(pt_x)
self.h_line.setPos(pt_y)
self.label.setText("x=%.2e, y=%.2e" % (pt_x, pt_y))
def add_cross_hair(self):
self.h_line = pg.InfiniteLine(angle=0, movable=False)
self.v_line = pg.InfiniteLine(angle=90, movable=False)
self.addItem(self.h_line, ignoreBounds=False)
self.addItem(self.v_line, ignoreBounds=False)
if self.label is None:
self.label = pg.LabelItem(justify="right")
self.getPlotItem().layout.addItem(self.label, 4, 1)
self.x_cross_index = 0
self.y_cross_index = 0
self.cross_section_enabled = True
def hide_cross_hair(self):
self.removeItem(self.h_line)
self.removeItem(self.v_line)
self.cross_section_enabled = False
class CrossSectionDock(CloseableDock):
def __init__(self, trace_size=80, **kwargs):
self.plot_item = view = pg.PlotItem(labels=kwargs.pop('labels', None))
self.img_view = kwargs['widget'] = pg.ImageView(view=view)
view.setAspectLocked(lock=False)
self.ui = self.img_view.ui
self.imageItem = self.img_view.imageItem
super(CrossSectionDock, self).__init__(**kwargs)
self.closeClicked.connect(self.hide_cross_section)
self.cross_section_enabled = False
self.search_mode = False
self.signals_connected = False
self.set_histogram(False)
histogram_action = QtGui.QAction('Histogram', self)
histogram_action.setCheckable(True)
histogram_action.triggered.connect(self.set_histogram)
self.img_view.scene.contextMenu.append(histogram_action)
self.ui.histogram.gradient.loadPreset('thermal')
try:
self.connect_signal()
except RuntimeError:
warnings.warn('Scene not set up, cross section signals not connected')
self.y_cross_index = 0
self.h_cross_section_widget = CrosshairPlotWidget()
self.h_cross_dock = CloseableDock(name='x trace', widget=self.h_cross_section_widget, area=self.area)
self.h_cross_section_widget.add_cross_hair()
self.h_cross_section_widget.search_mode = False
self.h_cross_section_widget_data = self.h_cross_section_widget.plot([0,0])
self.x_cross_index = 0
self.v_cross_section_widget = CrosshairPlotWidget()
self.v_cross_dock = CloseableDock(name='y trace', widget=self.v_cross_section_widget, area=self.area)
self.v_cross_section_widget.add_cross_hair()
self.v_cross_section_widget.search_mode = False
self.v_cross_section_widget_data = self.v_cross_section_widget.plot([0,0])
def set_data(self, data):
self.setImage(data)
def setLabels(self, xlabel="X", ylabel="Y", zlabel="Z"):
print self.h_cross_dock.label
self.plot_item.setLabels(bottom=(xlabel,), left=(ylabel,))
self.h_cross_section_widget.plotItem.setLabels(bottom=xlabel, left=zlabel)
self.v_cross_section_widget.plotItem.setLabels(bottom=ylabel, left=zlabel)
self.ui.histogram.item.axis.setLabel(text=zlabel)
def setImage(self, *args, **kwargs):
if 'pos' in kwargs:
self._x0, self._y0 = kwargs['pos']
else:
self._x0, self._y0 = 0, 0
if 'scale' in kwargs:
self._xscale, self._yscale = kwargs['scale']
else:
self._xscale, self._yscale = 1, 1
self.img_view.setImage(*args, **kwargs)
self.update_cross_section()
def toggle_cross_section(self):
if self.cross_section_enabled:
self.hide_cross_section()
else:
self.add_cross_section()
def set_histogram(self, visible):
self.ui.histogram.setVisible(visible)
self.ui.roiBtn.setVisible(visible)
self.ui.normBtn.setVisible(visible)
def add_cross_section(self):
if self.imageItem.image is not None:
(min_x, max_x), (min_y, max_y) = self.imageItem.getViewBox().viewRange()
mid_x, mid_y = (max_x + min_x)/2., (max_y + min_y)/2.
else:
mid_x, mid_y = 0, 0
self.h_line = pg.InfiniteLine(pos=mid_y, angle=0, movable=False)
self.v_line = pg.InfiniteLine(pos=mid_x, angle=90, movable=False)
self.plot_item.addItem(self.h_line, ignoreBounds=False)
self.plot_item.addItem(self.v_line, ignoreBounds=False)
self.x_cross_index = 0
self.y_cross_index = 0
self.cross_section_enabled = True
self.text_item = pg.LabelItem(justify="right")
#self.img_view.ui.gridLayout.addWidget(self.text_item, 2, 1, 1, 2)
#self.img_view.ui.graphicsView.addItem(self.text_item)#, 2, 1)
self.plot_item.layout.addItem(self.text_item, 4, 1)
#self.cs_layout.addItem(self.label, 2, 1) #TODO: Find a way of displaying this label
self.search_mode = True
self.area.addDock(self.h_cross_dock)
self.area.addDock(self.v_cross_dock, position='right', relativeTo=self.h_cross_dock)
self.cross_section_enabled = True
def hide_cross_section(self):
if self.cross_section_enabled:
self.plot_item.removeItem(self.h_line)
self.plot_item.removeItem(self.v_line)
self.img_view.ui.graphicsView.removeItem(self.text_item)
self.cross_section_enabled = False
self.h_cross_dock.close()
self.v_cross_dock.close()
def connect_signal(self):
"""This can only be run after the item has been embedded in a scene"""
if self.signals_connected:
warnings.warn("")
if self.imageItem.scene() is None:
raise RuntimeError('Signal can only be connected after it has been embedded in a scene.')
self.imageItem.scene().sigMouseClicked.connect(self.toggle_search)
self.imageItem.scene().sigMouseMoved.connect(self.handle_mouse_move)
self.img_view.timeLine.sigPositionChanged.connect(self.update_cross_section)
self.signals_connected = True
def toggle_search(self, mouse_event):
if mouse_event.double():
self.toggle_cross_section()
elif self.cross_section_enabled:
self.search_mode = not self.search_mode
if self.search_mode:
self.handle_mouse_move(mouse_event.scenePos())
def handle_mouse_move(self, mouse_event):
if self.cross_section_enabled and self.search_mode:
view_coords = self.imageItem.getViewBox().mapSceneToView(mouse_event)
view_x, view_y = view_coords.x(), view_coords.y()
item_coords = self.imageItem.mapFromScene(mouse_event)
item_x, item_y = item_coords.x(), item_coords.y()
max_x, max_y = self.imageItem.image.shape
if item_x < 0 or item_x > max_x or item_y < 0 or item_y > max_y:
return
self.v_line.setPos(view_x)
self.h_line.setPos(view_y)
#(min_view_x, max_view_x), (min_view_y, max_view_y) = self.imageItem.getViewBox().viewRange()
self.x_cross_index = max(min(int(item_x), max_x-1), 0)
self.y_cross_index = max(min(int(item_y), max_y-1), 0)
z_val = self.imageItem.image[self.x_cross_index, self.y_cross_index]
self.update_cross_section()
self.text_item.setText("x=%.2e, y=%.2e, z=%.2e" % (view_x, view_y, z_val))
def update_cross_section(self):
nx, ny = self.imageItem.image.shape
x0, y0, xscale, yscale = self._x0, self._y0, self._xscale, self._yscale
xdata = np.linspace(x0, x0+(xscale*(nx-1)), nx)
ydata = np.linspace(y0, y0+(yscale*(ny-1)), ny)
zval = self.imageItem.image[self.x_cross_index, self.y_cross_index]
self.h_cross_section_widget_data.setData(xdata, self.imageItem.image[:, self.y_cross_index])
self.h_cross_section_widget.v_line.setPos(xdata[self.x_cross_index])
self.h_cross_section_widget.h_line.setPos(zval)
self.v_cross_section_widget_data.setData(ydata, self.imageItem.image[self.x_cross_index, :])
self.v_cross_section_widget.v_line.setPos(ydata[self.y_cross_index])
self.v_cross_section_widget.h_line.setPos(zval)
class MoviePlotDock(CrossSectionDock):
def __init__(self, array, *args, **kwargs):
super(MoviePlotDock, self).__init__(*args, **kwargs)
self.setImage(array)
self.tpts = len(array)
play_button = QtGui.QPushButton("Play")
stop_button = QtGui.QPushButton("Stop")
stop_button.hide()
self.addWidget(play_button)
self.addWidget(stop_button)
self.play_timer = QtCore.QTimer()
self.play_timer.setInterval(50)
self.play_timer.timeout.connect(self.increment)
play_button.clicked.connect(self.play_timer.start)
play_button.clicked.connect(play_button.hide)
play_button.clicked.connect(stop_button.show)
stop_button.clicked.connect(self.play_timer.stop)
stop_button.clicked.connect(play_button.show)
stop_button.clicked.connect(stop_button.hide)
def increment(self):
self.img_view.setCurrentIndex((self.img_view.currentIndex + 1) % self.tpts)