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
278
279
280
281
|
# Copyright 2008 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import wx
import sys
class LabelText(wx.StaticText):
"""Label text class for uniform labels among all controls."""
def __init__(self, window, label):
wx.StaticText.__init__(self, window, -1, str(label))
font = self.GetFont()
font.SetWeight(wx.FONTWEIGHT_BOLD)
self.SetFont(font)
class _control_base(wx.BoxSizer):
"""Control base class"""
def __init__(self, window, callback):
self.window = window
self.callback = callback
wx.BoxSizer.__init__(self, wx.VERTICAL)
def get_window(self): return self.window
def call(self): return self.callback(self.get_value())
def get_value(self): raise NotImplementedError
class _chooser_control_base(_control_base):
"""House a drop down or radio buttons for variable control."""
def __init__(self, window, callback, label='Label', index=0, choices=[0], labels=[]):
"""!
Chooser contructor.
Create the slider, text box, and label.
@param window the wx parent window
@param callback call the callback on changes
@param label the label title
@param index the default choice index
@param choices a list of choices
@param labels the choice labels or empty list
"""
#initialize
_control_base.__init__(self, window, callback)
label_text = LabelText(self.get_window(), label)
self.Add(label_text, 0, wx.ALIGN_CENTER)
self.index = index
self.choices = choices
self.labels = map(str, labels or choices)
self._init()
def _handle_changed(self, event=None):
"""!
A change is detected. Call the callback.
"""
try: self.call()
except Exception, e: print >> sys.stderr, 'Error in exec callback from handle changed.\n', e
def get_value(self):
"""!
Update the chooser.
@return one of the possible choices
"""
self._update()
return self.choices[self.index]
##############################################################################################
# Button Control
##############################################################################################
class button_control(_chooser_control_base):
"""House a button for variable control."""
def _init(self):
self.button = wx.Button(self.get_window(), -1, self.labels[self.index])
self.button.Bind(wx.EVT_BUTTON, self._handle_changed)
self.Add(self.button, 0, wx.ALIGN_CENTER)
def _update(self):
self.index = (self.index + 1)%len(self.choices) #circularly increment index
self.button.SetLabel(self.labels[self.index])
##############################################################################################
# Drop Down Control
##############################################################################################
class drop_down_control(_chooser_control_base):
"""House a drop down for variable control."""
def _init(self):
self.drop_down = wx.Choice(self.get_window(), -1, choices=self.labels)
self.Add(self.drop_down, 0, wx.ALIGN_CENTER)
self.drop_down.Bind(wx.EVT_CHOICE, self._handle_changed)
self.drop_down.SetSelection(self.index)
def _update(self):
self.index = self.drop_down.GetSelection()
##############################################################################################
# Radio Buttons Control
##############################################################################################
class _radio_buttons_control_base(_chooser_control_base):
"""House radio buttons for variable control."""
def _init(self):
#create box for radio buttons
radio_box = wx.BoxSizer(self.radio_box_orientation)
panel = wx.Panel(self.get_window(), -1)
panel.SetSizer(radio_box)
self.Add(panel, 0, wx.ALIGN_CENTER)
#create radio buttons
self.radio_buttons = list()
for label in self.labels:
radio_button = wx.RadioButton(panel, -1, label)
radio_button.SetValue(False)
self.radio_buttons.append(radio_button)
radio_box.Add(radio_button, 0, self.radio_button_align)
radio_button.Bind(wx.EVT_RADIOBUTTON, self._handle_changed)
#set one radio button active
self.radio_buttons[self.index].SetValue(True)
def _update(self):
selected_radio_button = filter(lambda rb: rb.GetValue(), self.radio_buttons)[0]
self.index = self.radio_buttons.index(selected_radio_button)
class radio_buttons_horizontal_control(_radio_buttons_control_base):
radio_box_orientation = wx.HORIZONTAL
radio_button_align = wx.ALIGN_CENTER
class radio_buttons_vertical_control(_radio_buttons_control_base):
radio_box_orientation = wx.VERTICAL
radio_button_align = wx.ALIGN_LEFT
##############################################################################################
# Slider Control
##############################################################################################
class _slider_control_base(_control_base):
"""House a Slider and a Text Box for variable control."""
def __init__(self, window, callback, label='Label', value=50, min=0, max=100, num_steps=100):
"""!
Slider contructor.
Create the slider, text box, and label.
@param window the wx parent window
@param callback call the callback on changes
@param label the label title
@param value the default value
@param min the min
@param max the max
@param num_steps the number of steps
"""
#initialize
_control_base.__init__(self, window, callback)
self.min = float(min)
self.max = float(max)
self.num_steps = int(num_steps)
#create gui elements
label_text_sizer = wx.BoxSizer(self.label_text_orientation) #label and text box container
label_text = LabelText(self.get_window(), '%s: '%str(label))
self.text_box = text_box = wx.TextCtrl(self.get_window(), -1, str(value), style=wx.TE_PROCESS_ENTER)
text_box.Bind(wx.EVT_TEXT_ENTER, self._handle_enter) #bind this special enter hotkey event
for obj in (label_text, text_box): #fill the container with label and text entry box
label_text_sizer.Add(obj, 0, wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL)
self.Add(label_text_sizer, 0, wx.ALIGN_CENTER)
#make the slider
self.slider = slider = wx.Slider(self.get_window(), -1, size=wx.Size(*self.slider_size), style=self.slider_style)
try: slider.SetRange(0, num_steps)
except Exception, e:
print >> sys.stderr, 'Error in set slider range: "%s".'%e
sys.exit(-1)
slider.Bind(wx.EVT_SCROLL, self._handle_scroll) #bind the scrolling event
self.Add(slider, 0, wx.ALIGN_CENTER)
#init slider and text box
self._value = value
self._set_slider_value(self._value) #sets the slider's value
self.text_box.SetValue(str(self._value))
def get_value(self):
"""!
Get the current set value.
@return the value (float)
"""
return self._value
def _set_slider_value(self, real_value):
"""!
Translate the real numerical value into a slider value and,
write the value to the slider.
@param real_value the numeric value the slider should represent
"""
slider_value = (float(real_value) - self.min)*self.num_steps/(self.max - self.min)
self.slider.SetValue(slider_value)
def _handle_scroll(self, event=None):
"""!
A scroll event is detected. Read the slider, call the callback.
"""
slider_value = self.slider.GetValue()
new_value = slider_value*(self.max - self.min)/self.num_steps + self.min
self.text_box.SetValue(str(new_value))
self._value = new_value
try: self.call()
except Exception, e: print >> sys.stderr, 'Error in exec callback from handle scroll.\n', e
def _handle_enter(self, event=None):
"""!
An enter key was pressed. Read the text box, call the callback.
"""
new_value = float(self.text_box.GetValue())
self._set_slider_value(new_value)
self._value = new_value
try: self.call()
except Exception, e: print >> sys.stderr, 'Error in exec callback from handle enter.\n', e
class slider_horizontal_control(_slider_control_base):
label_text_orientation = wx.HORIZONTAL
slider_style = wx.SL_HORIZONTAL
slider_size = 200, 20
class slider_vertical_control(_slider_control_base):
label_text_orientation = wx.VERTICAL
slider_style = wx.SL_VERTICAL
slider_size = 20, 200
##############################################################################################
# Text Box Control
##############################################################################################
class text_box_control(_control_base):
"""House a Text Box for variable control."""
def __init__(self, window, callback, label='Label', value=50):
"""!
Text box contructor.
Create the text box, and label.
@param window the wx parent window
@param callback call the callback on changes
@param label the label title
@param value the default value
"""
#initialize
_control_base.__init__(self, window, callback)
#create gui elements
label_text_sizer = wx.BoxSizer(wx.HORIZONTAL) #label and text box container
label_text = LabelText(self.get_window(), '%s: '%str(label))
self.text_box = text_box = wx.TextCtrl(self.get_window(), -1, str(value), style=wx.TE_PROCESS_ENTER)
text_box.Bind(wx.EVT_TEXT_ENTER, self._handle_enter) #bind this special enter hotkey event
for obj in (label_text, text_box): #fill the container with label and text entry box
label_text_sizer.Add(obj, 0, wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL)
self.Add(label_text_sizer, 0, wx.ALIGN_CENTER)
self.text_box.SetValue(str(value))
def get_value(self):
"""!
Get the current set value.
@return the value (float)
"""
return self._value
def _handle_enter(self, event=None):
"""!
An enter key was pressed. Read the text box, call the callback.
If the text cannot be evaluated, do not try callback.
"""
try: self._value = eval(self.text_box.GetValue())
except: return
try: self.call()
except Exception, e: print >> sys.stderr, 'Error in exec callback from handle enter.\n', e
|
