root/trunk/libffado/support/mixer-qt4/ffado/widgets/matrixmixer.py

Revision 2015, 9.8 kB (checked in by jwoithe, 9 years ago)

motu: more 828mk1 debugging

  • Property svn:mergeinfo set to
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1 # coding=utf8
2 #
3 # Copyright (C) 2009 by Arnold Krille
4 #
5 # This file is part of FFADO
6 # FFADO = Free Firewire (pro-)audio drivers for linux
7 #
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 2 of the License, or
11 # (at your option) version 3 of the License.
12 #
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 # GNU General Public License for more details.
17 #
18 # You should have received a copy of the GNU General Public License
19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
20 #
21
22 from PyQt4 import QtGui, QtCore, Qt
23 import dbus, math, decimal
24
25 import logging
26 log = logging.getLogger("matrixmixer")
27
28 class ColorForNumber:
29     def __init__(self):
30         self.colors = dict()
31
32     def addColor(self, n, color):
33         self.colors[n] = color
34
35     def getColor(self, n):
36         #print "ColorForNumber.getColor( %g )" % (n)
37         keys = self.colors.keys()
38         keys.sort()
39         low = keys[-1]
40         high = keys[-1]
41         for i in range(len(keys)-1):
42             if keys[i] <= n and keys[i+1] > n:
43                 low = keys[i]
44                 high = keys[i+1]
45         #print "%g is between %g and %g" % (n, low, high)
46         f = 0
47         if high != low:
48             f = (n-low) / (high-low)
49         lc = self.colors[low]
50         hc = self.colors[high]
51         return QtGui.QColor(
52                 (1-f)*lc.red()   + f*hc.red(),
53                 (1-f)*lc.green() + f*hc.green(),
54                 (1-f)*lc.blue()  + f*hc.blue() )
55
56 class MixerNode(QtGui.QAbstractSlider):
57     def __init__(self, input, output, value, max, parent):
58         QtGui.QAbstractSlider.__init__(self, parent)
59         #log.debug("MixerNode.__init__( %i, %i, %i, %i, %s )" % (input, output, value, max, str(parent)) )
60
61         self.pos = QtCore.QPointF(0, 0)
62         self.input = input
63         self.output = output
64         self.setOrientation(Qt.Qt.Vertical)
65         if max == -1:
66             max = pow(2, 16)-1
67         self.setRange(0, max)
68         self.setValue(value)
69         self.connect(self, QtCore.SIGNAL("valueChanged(int)"), self.internalValueChanged)
70
71         self.setSmall(False)
72
73         self.bgcolors = ColorForNumber()
74         self.bgcolors.addColor(             0.0, QtGui.QColor(  0,   0,   0))
75         self.bgcolors.addColor(             1.0, QtGui.QColor(  0,   0, 128))
76         self.bgcolors.addColor(   math.pow(2,6), QtGui.QColor(  0, 255,   0))
77         self.bgcolors.addColor(  math.pow(2,14), QtGui.QColor(255, 255,   0))
78         self.bgcolors.addColor(math.pow(2,16)-1, QtGui.QColor(255,   0,   0))
79
80         self.setContextMenuPolicy(Qt.Qt.ActionsContextMenu)
81         self.mapper = QtCore.QSignalMapper(self)
82         self.connect(self.mapper, QtCore.SIGNAL("mapped(const QString&)"), self.directValues)
83
84         self.spinbox = QtGui.QDoubleSpinBox(self)
85         self.spinbox.setRange(-40, 12)
86         self.spinbox.setSuffix(" dB")
87         self.connect(self.spinbox, QtCore.SIGNAL("valueChanged(const QString&)"), self.directValues)
88         action = QtGui.QWidgetAction(self)
89         action.setDefaultWidget(self.spinbox)
90         self.addAction(action)
91
92         for text in ["3 dB", "0 dB", "-3 dB", "-20 dB", "-inf dB"]:
93             action = QtGui.QAction(text, self)
94             self.connect(action, QtCore.SIGNAL("triggered()"), self.mapper, QtCore.SLOT("map()"))
95             self.mapper.setMapping(action, text)
96             self.addAction(action)
97
98     def directValues(self,text):
99         #log.debug("MixerNode.directValues( '%s' )" % text)
100         text = text.split(" ")[0].replace(",",".")
101         n = pow(10, (float(text)/20)) * pow(2,14)
102         #log.debug("%g" % n)
103         self.setValue(n)
104
105     def mousePressEvent(self, ev):
106         if ev.buttons() & Qt.Qt.LeftButton:
107             self.pos = ev.posF()
108             self.tmpvalue = self.value()
109             ev.accept()
110             #log.debug("MixerNode.mousePressEvent() %s" % str(self.pos))
111
112     def mouseMoveEvent(self, ev):
113         if hasattr(self, "tmpvalue") and self.pos is not QtCore.QPointF(0, 0):
114             newpos = ev.posF()
115             change = newpos.y() - self.pos.y()
116             #log.debug("MixerNode.mouseReleaseEvent() change %s" % (str(change)))
117             self.setValue( self.tmpvalue - math.copysign(pow(abs(change), 2), change) )
118             ev.accept()
119
120     def mouseReleaseEvent(self, ev):
121         if hasattr(self, "tmpvalue") and self.pos is not QtCore.QPointF(0, 0):
122             newpos = ev.posF()
123             change = newpos.y() - self.pos.y()
124             #log.debug("MixerNode.mouseReleaseEvent() change %s" % (str(change)))
125             self.setValue( self.tmpvalue - math.copysign(pow(abs(change), 2), change) )
126             self.pos = QtCore.QPointF(0, 0)
127             del self.tmpvalue
128             ev.accept()
129
130     def paintEvent(self, ev):
131         p = QtGui.QPainter(self)
132         rect = self.rect()
133         v = self.value()
134         color = self.bgcolors.getColor(v)
135         p.fillRect(rect, color)
136
137         if self.small:
138             return
139
140         if color.valueF() < 0.6:
141             p.setPen(QtGui.QColor(255, 255, 255))
142         else:
143             p.setPen(QtGui.QColor(0, 0, 0))
144         lv=decimal.Decimal('-Infinity')
145         if v != 0:
146             lv = 20 * math.log10(v * 1.0 / math.pow(2,14))
147             #log.debug("new value is %g dB" % lv)
148         text = "%.2g dB" % lv
149         if v == 0:
150             text = "-ꝏ dB"
151         p.drawText(rect, Qt.Qt.AlignCenter, QtCore.QString.fromUtf8(text))
152
153     def internalValueChanged(self, value):
154         #log.debug("MixerNode.internalValueChanged( %i )" % value)
155         if value is not 0:
156             dB = 20 * math.log10(value / math.pow(2,14))
157             if self.spinbox.value() is not dB:
158                 self.spinbox.setValue(dB)
159         self.emit(QtCore.SIGNAL("valueChanged"), (self.input, self.output, value) )
160         self.update()
161
162     def setSmall(self, small):
163         self.small = small
164         if small:
165             self.setMinimumSize(10, 10)
166         else:
167             fontmetrics = self.fontMetrics()
168             self.setMinimumSize(fontmetrics.boundingRect("-0.0 dB").size()*1.1)
169         self.update()
170
171
172 class MixerChannel(QtGui.QWidget):
173     def __init__(self, number, parent=None, name=""):
174         QtGui.QWidget.__init__(self, parent)
175         layout = QtGui.QGridLayout(self)
176         self.number = number
177         if name != "":
178             name = "\n(%s)" % name
179         self.name = name
180         self.lbl = QtGui.QLabel(self)
181         self.lbl.setAlignment(Qt.Qt.AlignCenter)
182         layout.addWidget(self.lbl, 0, 0, 1, 2)
183         self.hideChannel(False)
184
185         self.setContextMenuPolicy(Qt.Qt.ActionsContextMenu)
186
187         action = QtGui.QAction("Make this channel small", self)
188         action.setCheckable(True)
189         self.connect(action, QtCore.SIGNAL("triggered(bool)"), self.hideChannel)
190         self.addAction(action)
191
192     def hideChannel(self, hide):
193         if hide:
194             self.lbl.setText("%i" % self.number);
195         else:
196             self.lbl.setText("Ch. %i%s" % (self.number+1, self.name))
197         self.emit(QtCore.SIGNAL("hide"), self.number, hide)
198         self.update()
199
200
201
202 class MatrixMixer(QtGui.QWidget):
203     def __init__(self, servername, basepath, parent=None, sliderMaxValue=-1):
204         QtGui.QWidget.__init__(self, parent)
205         self.bus = dbus.SessionBus()
206         self.dev = self.bus.get_object(servername, basepath)
207         self.interface = dbus.Interface(self.dev, dbus_interface="org.ffado.Control.Element.MatrixMixer")
208
209         #palette = self.palette()
210         #palette.setColor(QtGui.QPalette.Window, palette.color(QtGui.QPalette.Window).darker());
211         #self.setPalette(palette)
212
213         cols = self.interface.getColCount()
214         rows = self.interface.getRowCount()
215         log.debug("Mixer has %i rows and %i columns" % (rows, cols))
216
217         layout = QtGui.QGridLayout(self)
218         self.setLayout(layout)
219
220         self.rowHeaders = []
221         self.columnHeaders = []
222         self.items = []
223
224         # Add row/column headers
225         for i in range(cols):
226             ch = MixerChannel(i, self, self.interface.getColName(i))
227             self.connect(ch, QtCore.SIGNAL("hide"), self.hideColumn)
228             layout.addWidget(ch, 0, i+1)
229             self.columnHeaders.append( ch )
230         for i in range(rows):
231             ch = MixerChannel(i, self, self.interface.getRowName(i))
232             self.connect(ch, QtCore.SIGNAL("hide"), self.hideRow)
233             layout.addWidget(ch, i+1, 0)
234             self.rowHeaders.append( ch )
235
236         # Add node-widgets
237         for i in range(rows):
238             self.items.append([])
239             for j in range(cols):
240                 node = MixerNode(j, i, self.interface.getValue(i,j), sliderMaxValue, self)
241                 self.connect(node, QtCore.SIGNAL("valueChanged"), self.valueChanged)
242                 layout.addWidget(node, i+1, j+1)
243                 self.items[i].append(node)
244
245         self.hiddenRows = []
246         self.hiddenCols = []
247
248
249     def checkVisibilities(self):
250         for x in range(len(self.items)):
251             for y in range(len(self.items[x])):
252                 self.items[x][y].setSmall(
253                         (x in self.hiddenRows)
254                         | (y in self.hiddenCols)
255                         )
256
257
258     def hideColumn(self, column, hide):
259         if hide:
260             self.hiddenCols.append(column)
261         else:
262             self.hiddenCols.remove(column)
263         self.checkVisibilities()
264     def hideRow(self, row, hide):
265         if hide:
266             self.hiddenRows.append(row)
267         else:
268             self.hiddenRows.remove(row)
269         self.checkVisibilities()
270
271     def valueChanged(self, n):
272         #log.debug("MatrixNode.valueChanged( %s )" % str(n))
273         self.interface.setValue(n[1], n[0], n[2])
274
275 #
276 # vim: et ts=4 sw=4 fileencoding=utf8
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