def generate_labels(self):
"""
Generate the text labels for the slider.
Called on init and on resizeEvent
"""
self.levels = np.linspace(self.minimum(), self.maximum(), 5)
self.level_labels = []
painter = QtGui.QPainter(self)
painter.setFont(mono_font())
style = self.style()
opt = QtWidgets.QStyleOptionSlider()
self.initStyleOption(opt)
length = style.pixelMetric(QtWidgets.QStyle.PM_SliderLength, opt, self)
available = style.pixelMetric(QtWidgets.QStyle.PM_SliderSpaceAvailable, opt, self)
for v in self.levels:
label_str = str(int(round(v)))
# label_str = "{0:d}".format(v)
rect = painter.drawText(QtCore.QRect(), QtCore.Qt.TextDontPrint, label_str)
if self.orientation() == QtCore.Qt.Horizontal:
x_loc = QtWidgets.QStyle.sliderPositionFromValue(self.minimum(),
self.maximum(), v, available, opt.upsideDown)
left = x_loc + length // 2 - rect.width() // 2
# there is a 3 px offset that I can't attribute to any metric
# left = (self.width())-(rect.width())-10
bottom = (self.height() / 2) + rect.height() //2 + 3
else:
y_loc= QtWidgets.QStyle.sliderPositionFromValue(self.minimum(),
self.maximum(), v, available, opt.upsideDown)
bottom=y_loc+length//2+rect.height()//2-3
# there is a 3 px offset that I can't attribute to any metric
#left = (self.width())-(rect.width())-10
left = (self.width()/2)-(styles.INDICATOR_WIDTH/2)-rect.width()-3
pos=QtCore.QPoint(left, bottom)
self.level_labels.append((pos, QtGui.QStaticText(label_str)))
#painter.drawText(pos, label_str)
self.setTickInterval(self.levels[1]-self.levels[0])
self.redraw_labels = False
def paintEvent(self, event):
# based on http://qt.gitorious.org/qt/qt/blobs/master/src/gui/widgets/qslider.cpp
painter = QtGui.QPainter(self)
#style = QtWidgets.QApplication.style()
style = self.style()
for i, value in enumerate([self._high, self._low]):
opt = QtWidgets.QStyleOptionSlider()
self.initStyleOption(opt)
# pdb.set_trace()
# Only draw the groove for the first slider so it doesn't get drawn
# on top of the existing ones every time
if i == 0:
opt.subControls = style.SC_SliderGroove | style.SC_SliderHandle
else:
# opt.subControls = QtWidgets.QStyle.SC_SliderHandle
opt.subControls = style.SC_SliderHandle
#
# if self.tickPosition() != self.NoTicks:
# opt.subControls |= QtWidgets.QStyle.SC_SliderTickmarks
if self.pressed_control:
opt.activeSubControls = self.pressed_control
opt.state |= QtWidgets.QStyle.State_Sunken
else:
opt.activeSubControls = self.hover_control
# opt.rect.setX(-self.width()/2)
opt.sliderPosition = value
opt.sliderValue = value
style.drawComplexControl(QtWidgets.QStyle.CC_Slider, opt, painter, self)
if not self.level_labels or self.redraw_labels:
painter.end()
self.generate_labels()
painter = QtGui.QPainter(self)
painter.setFont(mono_font())
for label in self.level_labels:
painter.drawStaticText(label[0], label[1])
def init_ui(self):
self.layout = QtWidgets.QGridLayout()
self.timer_label = QtWidgets.QLabel()
self.timer_label.setFont(mono_font())
self.indicator = QtWidgets.QRadioButton()
self.set_indicator()
self.layout.addWidget(QtWidgets.QLabel("Uptime"),
0,
0,
alignment=QtCore.Qt.AlignVCenter
| QtCore.Qt.AlignRight)
self.layout.addWidget(self.timer_label, 1, 0)
self.layout.addWidget(QtWidgets.QLabel("Status"), 0, 1)
self.layout.addWidget(self.indicator, 1, 1)
self.setFrameStyle(QtWidgets.QFrame.StyledPanel
| QtWidgets.QFrame.Raised)
self.setLayout(self.layout)
def init_ui(self):
self.layout = QtWidgets.QHBoxLayout()
self.setLayout(self.layout)
#########
# create widgets
# make range slider
self.range_slider = RangeSlider(self.abs_range, self.safe_range)
# make comboboxes to display numerical value
self.max_safe = QtWidgets.QSpinBox()
self.max_safe.setRange(self.abs_range[0], self.abs_range[1])
self.max_safe.setSingleStep(10**(self.decimals * -1))
self.max_safe.setValue(self.safe_range[1])
self.min_safe = QtWidgets.QSpinBox()
self.min_safe.setRange(self.abs_range[0], self.abs_range[1])
self.min_safe.setSingleStep(10**(self.decimals * -1))
self.min_safe.setValue(self.safe_range[0])
# labels to display values
self.value_label = QtWidgets.QLabel()
self.value_label.setStyleSheet(styles.DISPLAY_VALUE)
self.value_label.setFont(mono_font())
self.value_label.setAlignment(QtCore.Qt.AlignRight)
self.value_label.setMargin(0)
self.value_label.setContentsMargins(0, 0, 0, 0)
self.name_label = QtWidgets.QLabel()
self.name_label.setStyleSheet(styles.DISPLAY_NAME)
self.name_label.setText(self.name)
self.name_label.setAlignment(QtCore.Qt.AlignRight)
self.units_label = QtWidgets.QLabel()
self.units_label.setStyleSheet(styles.DISPLAY_UNITS)
self.units_label.setText(self.units)
self.units_label.setAlignment(QtCore.Qt.AlignRight)
#########
# connect widgets
# update boxes when slider changed
self.range_slider.valueChanged.connect(self.update_boxes)
# and vice versa
self.min_safe.valueChanged.connect(self.range_slider.setLow)
self.max_safe.valueChanged.connect(self.range_slider.setHigh)
# and connect them all to a general limits_changed method
# that also checks the alarm
self.range_slider.valueChanged.connect(self._limits_changed)
self.min_safe.valueChanged.connect(self._limits_changed)
self.max_safe.valueChanged.connect(self._limits_changed)
#########
# layout widgets
self.layout.addWidget(self.range_slider, 2)
box_layout = QtWidgets.QVBoxLayout()
box_layout.addWidget(QtWidgets.QLabel('Max:'))
box_layout.addWidget(self.max_safe)
box_layout.addStretch()
box_layout.addWidget(QtWidgets.QLabel('Min:'))
box_layout.addWidget(self.min_safe)
self.layout.addLayout(box_layout, 1)
label_layout = QtWidgets.QVBoxLayout()
label_layout.setContentsMargins(0, 0, 0, 0)
label_layout.addWidget(self.value_label)
label_layout.addWidget(self.name_label)
label_layout.addWidget(self.units_label)
label_layout.addStretch()
self.layout.addLayout(label_layout, 5)
def init_ui(self):
self.layout = QtWidgets.QGridLayout()
# self.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
# QtWidgets.QSizePolicy.Expanding)
# Value, Controller
# min, max
# Name
# Units
self.value_label = EditableLabel()
self.value_label.setStyleSheet(styles.CONTROL_VALUE)
self.value_label.label.setFont(mono_font())
self.value_label.lineEdit.setFont(mono_font())
self.value_label.label.setAlignment(QtCore.Qt.AlignRight)
#self.value_label.setMargin(0)
self.value_label.setContentsMargins(0,0,0,0)
# # set max size based on range
# # FIXME: TEMPORARY HACK - get sizing to work intelligibly with the dial
# #n_ints = len(str(self.abs_range[1]))
# n_ints = 3
if self.decimals > 0:
# don't just add decimals b/c we add another for the decimal itself
# but don't want to +1 if decimals = 0!
n_ints = int(len(str(self.abs_range[1]))+self.decimals+1)
else:
n_ints = int(len(str(self.abs_range[1])))
# to simplify things for now, if we're supposed to display _more_
# than the 5 we assume (eg. 100.0), then use the n_ints
# otherwise just use 5
if n_ints <= 5:
n_ints = 5
self.value_label.setFixedWidth(n_ints*styles.VALUE_SIZE*.6)
# self.value_label.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
# QtWidgets.QSizePolicy.Maximum)
self.name_label = QtWidgets.QLabel()
self.name_label.setStyleSheet(styles.CONTROL_NAME)
self.name_label.setText(self.name)
self.name_label.setWordWrap(True)
self.name_label.setAlignment(QtCore.Qt.AlignRight)
# self.name_label.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
# QtWidgets.QSizePolicy.Expanding)
self.units_label = QtWidgets.QLabel()
self.units_label.setStyleSheet(styles.CONTROL_UNITS)
self.units_label.setText(self.units)
self.units_label.setAlignment(QtCore.Qt.AlignRight)
self.units_label.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Expanding)
# Expand drawer button
self.toggle_button = QtWidgets.QToolButton(checkable=True,
checked=False)
self.toggle_button.setStyleSheet(styles.DISPLAY_NAME)
self.toggle_button.toggled.connect(self.toggle_control)
self.toggle_button.setToolButtonStyle(
QtCore.Qt.ToolButtonIconOnly
)
self.toggle_button.setSizePolicy(QtWidgets.QSizePolicy.Maximum,
QtWidgets.QSizePolicy.Expanding)
self.toggle_button.setArrowType(QtCore.Qt.LeftArrow)
###
# layout
self.layout.addWidget(self.value_label, 0, 0, 2, 1, alignment=QtCore.Qt.AlignVCenter | QtCore.Qt.AlignRight)
#self.layout.addWidget(self.dial, 0, 1, 2, 2, alignment=QtCore.Qt.AlignVCenter)
#self.layout.addWidget(self.slider_min, 2, 1, 1, 1)
#self.layout.addWidget(self.slider_max, 2, 2, 1, 1)
self.layout.addWidget(self.name_label, 0, 1, 1, 1)
self.layout.addWidget(self.units_label, 1, 1, 1, 1)
self.layout.addWidget(self.toggle_button, 0, 2, 2, 1, alignment=QtCore.Qt.AlignRight)
self.setLayout(self.layout)
################
# Create initially hidden widgets
# Min value - slider - max value
self.slider_layout = QtWidgets.QHBoxLayout()
self.slider_min = QtWidgets.QLabel()
self.slider_min.setText(str(np.round(self.abs_range[0], self.decimals)))
self.slider_min.setAlignment(QtCore.Qt.AlignLeft)
self.slider_min.setFont(mono_font())
self.slider_min.setStyleSheet(styles.CONTROL_LABEL)
self.slider_min.setMargin(0)
self.slider_min.setSizePolicy(QtWidgets.QSizePolicy.Maximum,
QtWidgets.QSizePolicy.Maximum)
self.slider_max = QtWidgets.QLabel()
self.slider_max.setText(str(np.round(self.abs_range[1], self.decimals)))
self.slider_max.setAlignment(QtCore.Qt.AlignRight)
self.slider_max.setFont(mono_font())
self.slider_max.setStyleSheet(styles.CONTROL_LABEL)
self.slider_max.setMargin(0)
self.slider_max.setSizePolicy(QtWidgets.QSizePolicy.Maximum,
QtWidgets.QSizePolicy.Maximum)
self.slider = DoubleSlider(decimals=self.decimals, orientation=QtCore.Qt.Orientation.Horizontal)
self.slider.setMinimum(self.abs_range[0])
self.slider.setMaximum(self.abs_range[1])
#self.slider.setContentsMargins(0,0,0,0)
self.slider.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Maximum)
self.slider_layout.addWidget(self.slider_min)
self.slider_layout.addWidget(self.slider)
self.slider_layout.addWidget(self.slider_max)
self.slider_frame = QtWidgets.QFrame()
self.slider_frame.setLayout(self.slider_layout)
self.slider_frame.setVisible(False)
###
# set signals
self.value_label.textChanged.connect(self.update_value)
self.slider.doubleValueChanged.connect(self.update_value)
self.update_value(self.value)
def paintEvent(self, event):
# based on http://qt.gitorious.org/qt/qt/blobs/master/src/gui/widgets/qslider.cpp
painter = QtGui.QPainter(self)
#style = QtWidgets.QApplication.style()
style = self.style()
### Draw current value indicator
if self._indicator != 0:
opt = QtWidgets.QStyleOptionSlider()
self.initStyleOption(opt)
length = style.pixelMetric(QtWidgets.QStyle.PM_SliderLength, opt, self)
available = style.pixelMetric(QtWidgets.QStyle.PM_SliderSpaceAvailable, opt, self)
y_loc= QtWidgets.QStyle.sliderPositionFromValue(self.minimum(),
self.maximum(), self._indicator, self.height(), opt.upsideDown)
# draw indicator first, so underneath max and min
indicator_color = QtGui.QColor(0,0,0)
if not self.alarm:
indicator_color.setNamedColor(styles.INDICATOR_COLOR)
else:
indicator_color.setNamedColor(styles.ALARM_COLOR)
x_begin = (self.width()-styles.INDICATOR_WIDTH)/2
painter.setBrush(indicator_color)
pen_bak = copy.copy(painter.pen())
painter.setPen(painter.pen().setWidth(0))
painter.drawRect(x_begin,y_loc,styles.INDICATOR_WIDTH,self.height()-y_loc)
painter.setPen(pen_bak)
for i, value in enumerate([self._high, self._low]):
opt = QtWidgets.QStyleOptionSlider()
self.initStyleOption(opt)
# pdb.set_trace()
# Only draw the groove for the first slider so it doesn't get drawn
# on top of the existing ones every time
if i == 0:
opt.subControls = style.SC_SliderGroove | style.SC_SliderHandle
else:
#opt.subControls = QtWidgets.QStyle.SC_SliderHandle
opt.subControls = style.SC_SliderHandle
if self.tickPosition() != self.NoTicks:
opt.subControls |= QtWidgets.QStyle.SC_SliderTickmarks
if self.pressed_control:
opt.activeSubControls = self.pressed_control
opt.state |= QtWidgets.QStyle.State_Sunken
else:
opt.activeSubControls = self.hover_control
# opt.rect.setX(-self.width()/2)
opt.sliderPosition = value
opt.sliderValue = value
style.drawComplexControl(QtWidgets.QStyle.CC_Slider, opt, painter, self)
# draw ticks
opt = QtWidgets.QStyleOptionSlider()
self.initStyleOption(opt)
length = style.pixelMetric(QtWidgets.QStyle.PM_SliderLength, opt, self)
available = style.pixelMetric(QtWidgets.QStyle.PM_SliderSpaceAvailable, opt, self)
border_offset = 5
available -= border_offset
painter.setFont(mono_font())
for v in self.levels:
label_str = str(int(round(v)))
# label_str = "{0:d}".format(v)
rect = painter.drawText(QtCore.QRect(), QtCore.Qt.TextDontPrint, label_str)
y_loc= QtWidgets.QStyle.sliderPositionFromValue(self.minimum(),
self.maximum(), v, available, opt.upsideDown)
bottom=y_loc+length//2+rect.height()//2+(border_offset/2)-3
# there is a 3 px offset that I can't attribute to any metric
#left = (self.width())-(rect.width())-10
left = (self.width()/2)-(styles.INDICATOR_WIDTH/2)-rect.width()-3
pos=QtCore.QPoint(left, bottom)
painter.drawText(pos, label_str)
self.setTickInterval(self.levels[1]-self.levels[0])
def init_ui(self):
self.layout = QtWidgets.QVBoxLayout()
self.setLayout(self.layout)
#########
# create widgets
# make range slider
self.range_slider = RangeSlider(
self.abs_range,
self.safe_range,
decimals=self.decimals,
orientation=QtCore.Qt.Orientation.Horizontal)
# make comboboxes to display numerical value
self.max_safe = QtWidgets.QDoubleSpinBox()
self.max_safe.setDecimals(self.decimals)
self.max_safe.setRange(self.abs_range[0], self.abs_range[1])
self.max_safe.setSingleStep(10**(self.decimals * -1))
self.max_safe.setValue(self.safe_range[1])
self.min_safe = QtWidgets.QDoubleSpinBox()
self.min_safe.setDecimals(self.decimals)
self.min_safe.setRange(self.abs_range[0], self.abs_range[1])
self.min_safe.setSingleStep(10**(self.decimals * -1))
self.min_safe.setValue(self.safe_range[0])
# labels to display values
self.value_label = QtWidgets.QLabel()
self.value_label.setStyleSheet(styles.DISPLAY_VALUE)
self.value_label.setFont(mono_font())
self.value_label.setAlignment(QtCore.Qt.AlignRight)
self.value_label.setMargin(0)
self.value_label.setContentsMargins(0, 0, 0, 0)
self.value_label.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Expanding)
self.name_label = QtWidgets.QLabel()
self.name_label.setStyleSheet(styles.DISPLAY_NAME)
self.name_label.setText(self.name)
self.name_label.setAlignment(QtCore.Qt.AlignRight)
self.units_label = QtWidgets.QLabel()
self.units_label.setStyleSheet(styles.DISPLAY_UNITS)
self.units_label.setText(self.units)
self.units_label.setAlignment(QtCore.Qt.AlignRight
| QtCore.Qt.AlignTop)
self.units_label.setSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Expanding)
# toggle button to expand control
self.toggle_button = QtWidgets.QToolButton(checkable=True,
checked=False)
self.toggle_button.setStyleSheet(styles.DISPLAY_NAME)
self.toggle_button.toggled.connect(self.toggle_control)
self.toggle_button.setToolButtonStyle(QtCore.Qt.ToolButtonIconOnly)
self.toggle_button.setSizePolicy(QtWidgets.QSizePolicy.Maximum,
QtWidgets.QSizePolicy.Expanding)
self.toggle_button.setArrowType(QtCore.Qt.RightArrow)
#########
# connect widgets
# update boxes when slider changed
self.range_slider.valueChanged.connect(self.update_boxes)
# and vice versa
self.min_safe.valueChanged.connect(self.range_slider.setLow)
self.max_safe.valueChanged.connect(self.range_slider.setHigh)
# and connect them all to a general limits_changed method
# that also checks the alarm
self.range_slider.valueChanged.connect(self._limits_changed)
self.min_safe.valueChanged.connect(self._limits_changed)
self.max_safe.valueChanged.connect(self._limits_changed)
#########
# layout widgets
# first make label layout
label_layout = QtWidgets.QGridLayout()
label_layout.setContentsMargins(0, 0, 0, 0)
label_layout.addWidget(self.toggle_button, 0, 0, 2, 1)
label_layout.addWidget(self.value_label, 0, 1, 2, 1)
label_layout.addWidget(self.name_label, 0, 2, 1, 1)
label_layout.addWidget(self.units_label, 1, 2, 1, 1)
# label_layout.addStretch()
self.layout.addLayout(label_layout, 5)
# then combine sliders and boxes
self.slider_layout = QtWidgets.QVBoxLayout()
minmax_layout = QtWidgets.QHBoxLayout()
minmax_layout.addWidget(QtWidgets.QLabel('Min:'))
minmax_layout.addWidget(self.min_safe)
minmax_layout.addStretch()
minmax_layout.addWidget(QtWidgets.QLabel('Max:'))
minmax_layout.addWidget(self.max_safe)
self.slider_layout.addLayout(minmax_layout)
self.slider_layout.addWidget(self.range_slider)
# and wrap them in a widget so we can show/hide more robustly
self.slider_frame = QtWidgets.QFrame()
self.slider_frame.setLayout(self.slider_layout)
self.slider_frame.setVisible(False)