/usr/share/kde4/apps/plasma/plasmoids/veromix-plasmoid/contents/code/LabelSlider.py is in plasma-widget-veromix 0.18.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2009-2012 Nik Lutz <nik.lutz@gmail.com>
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
import datetime
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyKDE4.plasma import Plasma
from PyKDE4 import plasmascript
from PyKDE4.kdeui import *
from PyKDE4.kdecore import *
from PyKDE4.kdecore import *
from PyKDE4.plasma import *
class Label(Plasma.Label):
volumeChanged = pyqtSignal(int)
def __init__(self, parent=None, show_unit_value = False, unit_symbol="%"):
self.text = ""
self.bold_text = ""
self.unit_value = -1
self.unit_symbol = unit_symbol
self.show_unit_value = show_unit_value
Plasma.Label.__init__(self, parent)
def setText(self, text):
self.text = text
self._set_text()
def setBoldText(self,text):
self.bold_text = text
self._set_text()
def _get_formated_unit_string(self):
if self.show_unit_value and self.unit_value != -1:
return str(self.unit_value).zfill(2) + self.unit_symbol + " "
return ""
def _set_text(self):
Plasma.Label.setText(self, "<b>" + self._get_formated_unit_string() + self.bold_text + "</b> " + self.text)
def update_unit_string(self,unit_value):
self.unit_value = unit_value
self._set_text()
def setMinimum(self, value):
pass
def setMaximum(self, value):
pass
def update_with_info(self, info):
pass
def set_unit_value_visible(self, boolean):
self.show_unit_value = boolean
self._set_text()
class LabelSlider(Plasma.Slider):
volumeChanged = pyqtSignal(int)
def __init__(self, parent=None, show_unit_value=False, unit_symbol="%"):
self.DELAY= 1
self.text = ""
self.bold_text = ""
d = datetime.timedelta(seconds=2)
self.pulse_timestamp = datetime.datetime.now() + d
self.plasma_timestamp = datetime.datetime.now() + d
Plasma.Slider.__init__(self)
self.label = Label(self, show_unit_value, unit_symbol)
self.label.setPos(0, -4)
self.connect(self, SIGNAL("geometryChanged()"), self._resize_widgets)
self.valueChanged.connect( self.on_slider_cb)
def setMaximum(self, value, showticks=True):
Plasma.Slider.setMaximum(self,value)
if value > 100 and showticks:
self.nativeWidget().setTickInterval(100)
self.nativeWidget().setTickPosition(QSlider.TicksBelow)
else:
self.nativeWidget().setTickPosition(QSlider.NoTicks)
def set_unit_value_visible(self, boolean):
self.label.set_unit_value_visible(boolean)
def _resize_widgets(self):
w = self.size().width()
self.label.setMinimumWidth(w)
self.label.setMaximumWidth(w)
# set abs position of label, respect fonts-size
h = self.size().height()
s = Plasma.Theme.defaultTheme().fontMetrics().height() + 2
v = int ((h/2) - s)
self.label.setPos(0,v)
def setText(self, text):
self.label.setText(text)
def setBoldText(self,text):
self.label.setBoldText(text)
def setValueFromPlasma(self, value):
if self.check_pulse_timestamp():
self.update_plasma_timestamp()
self.setValue(value)
def setValue(self,value):
Plasma.Slider.setValue(self,value)
self.label.update_unit_string(value)
def update_with_info(self, info):
self.setValueFromPulse(info.get_volume())
def setValueFromPulse(self, value):
if self.check_plasma_timestamp():
self.update_pulse_timestamp()
self.setValue(value)
def on_slider_cb(self, value):
self.label.update_unit_string(value)
if self.check_pulse_timestamp():
self.update_plasma_timestamp()
self.volumeChanged.emit(value)
def set_focus(self):
self.scene().setFocusItem(self, Qt.TabFocusReason)
# private
def update_pulse_timestamp(self):
self.pulse_timestamp = datetime.datetime.now()
def update_plasma_timestamp(self):
self.plasma_timestamp = datetime.datetime.now()
## testing
def check_plasma_timestamp(self):
now = datetime.datetime.now()
return (now - self.plasma_timestamp).seconds > self.DELAY
def check_pulse_timestamp(self):
now = datetime.datetime.now()
return (now - self.pulse_timestamp).seconds > self.DELAY
class VerticalSlider(LabelSlider):
volumeChanged = pyqtSignal(int)
def __init__(self):
LabelSlider.__init__(self)
self.label.setRotation(-90)
self._resize_widgets()
def _resize_widgets(self):
h = self.size().height()
self.label.setPos(-6, h)
w = self.size().height()
self.label.setMinimumWidth(w)
self.label.setMaximumWidth(w)
class MeterSlider(QGraphicsWidget):
volumeChanged = pyqtSignal(int)
def __init__(self, show_unit_value = False, unit_symbol="%"):
QGraphicsWidget.__init__(self)
self.meter = None
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed,True))
self.slider = LabelSlider(show_unit_value, unit_symbol)
self.slider.setParent(self)
self.slider.volumeChanged.connect(self.on_volume_changed)
self.layout = QGraphicsLinearLayout(Qt.Vertical)
self.layout.setContentsMargins(2,2,2,0)
self.setLayout(self.layout)
self.layout.addItem(self.slider)
self.connect(self, SIGNAL("geometryChanged()"), self._resize_widgets)
def create_meter(self):
self.meter = Plasma.Meter(self)
self.meter.setMeterType(Plasma.Meter.BarMeterHorizontal)
self.meter.setSizePolicy(QSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed, True))
self.meter.setZValue(0)
if self.event_filter:
self.meter.installEventFilter(self.event_filter)
def on_volume_changed(self,val):
self.volumeChanged.emit(val)
def setOrientation(self, orient):
self.slider.setOrientation(orient)
def setMaximum(self, orient):
self.slider.setMaximum(orient)
def setMinimum(self, orient):
self.slider.setMinimum(orient)
def setText(self, text):
self.slider.setText(text)
def setBoldText(self,text):
self.slider.setBoldText(text)
def setValueFromPlasma(self, value):
self.slider.setValueFromPlasma(value)
def update_with_info(self, info):
self.slider.update_with_info(info)
def setValueFromPulse(self, value):
self.slider.setValueFromPulse(value)
def nativeWidget(self):
return self.slider.nativeWidget()
def set_unit_value_visible(self, boolean):
self.slider.set_unit_value_visible(boolean)
def _resize_widgets(self):
if not self.meter:
return
meter_width = self.size().width()
self.meter.setMinimumWidth(meter_width)
self.meter.setMaximumWidth(meter_width)
meter_height = Plasma.Theme.defaultTheme().fontMetrics().height()
self.meter.setMinimumHeight(meter_height)
self.meter.setMaximumHeight(meter_height)
self.meter.setPos(0, int(self.size().height()/2))
self.slider.setZValue(800)
self.slider.label.setZValue(100)
def toggle_meter(self):
self.set_meter_visible((self.meter == None))
def set_meter_value(self, value):
if self.meter:
self.meter.setValue(int(value))
def set_meter_visible(self, aboolean):
if aboolean:
self.create_meter()
else:
if self.meter:
self.meter.setParent(None)
del self.meter
self.meter = None
self._resize_widgets()
def installEventFilter(self, filter):
self.event_filter = filter
self.slider.installEventFilter(filter)
self.slider.label.installEventFilter(filter)
if self.meter:
self.meter.installEventFilter(filter)
QGraphicsWidget.installEventFilter(self, filter)
def set_focus(self):
self.slider.set_focus()
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