from __future__ import (absolute_import, division, print_function,
unicode_literals)
import os
import signal
import sys
import matplotlib
from matplotlib.cbook import is_string_like
from matplotlib.backend_bases import FigureManagerBase
from matplotlib.backend_bases import FigureCanvasBase
from matplotlib.backend_bases import NavigationToolbar2
from matplotlib.backend_bases import cursors
from matplotlib.backend_bases import TimerBase
from matplotlib.backend_bases import ShowBase
from matplotlib._pylab_helpers import Gcf
from matplotlib.figure import Figure
from matplotlib.widgets import SubplotTool
try:
import matplotlib.backends.qt5_editor.figureoptions as figureoptions
except ImportError:
figureoptions = None
from PyQt5 import QtCore, QtGui, QtWidgets
_getSaveFileName = QtWidgets.QFileDialog.getSaveFileName
__version__ = QtCore.PYQT_VERSION_STR
backend_version = __version__
def fn_name():
return sys._getframe(1).f_code.co_name
DEBUG = False
cursord = {
cursors.MOVE: QtCore.Qt.SizeAllCursor,
cursors.HAND: QtCore.Qt.PointingHandCursor,
cursors.POINTER: QtCore.Qt.ArrowCursor,
cursors.SELECT_REGION: QtCore.Qt.CrossCursor
}
def draw_if_interactive():
"""
Is called after every pylab drawing command
"""
if matplotlib.is_interactive():
figManager = Gcf.get_active()
if figManager is not None:
figManager.canvas.draw_idle()
def _create_qApp():
"""
Only one qApp can exist at a time, so check before creating one.
"""
if QtWidgets.QApplication.startingUp():
if DEBUG:
print("Starting up QApplication")
global qApp
app = QtWidgets.QApplication.instance()
if app is None:
# check for DISPLAY env variable on X11 build of Qt
if hasattr(QtWidgets, "QX11Info"):
display = os.environ.get('DISPLAY')
if display is None or not re.search(':\d', display):
raise RuntimeError('Invalid DISPLAY variable')
qApp = QtWidgets.QApplication([str(" ")])
qApp.lastWindowClosed.connect(qApp.quit)
else:
qApp = app
class Show(ShowBase):
def mainloop(self):
# allow KeyboardInterrupt exceptions to close the plot window.
signal.signal(signal.SIGINT, signal.SIG_DFL)
print('mainloop')
QtWidgets.qApp.exec_()
show = Show()
def new_figure_manager(num, *args, **kwargs):
"""
Create a new figure manager instance
"""
thisFig = Figure(*args, **kwargs)
return new_figure_manager_given_figure(num, thisFig)
def new_figure_manager_given_figure(num, figure):
"""
Create a new figure manager instance for the given figure.
"""
canvas = FigureCanvasQT(figure)
manager = FigureManagerQT(canvas, num)
return manager
class TimerQT(TimerBase):
"""
Subclass of :class:`backend_bases.TimerBase` that uses Qt5 timer events.
Attributes:
* interval: The time between timer events in milliseconds. Default
is 1000 ms.
* single_shot: Boolean flag indicating whether this timer should
operate as single shot (run once and then stop). Defaults to False.
* callbacks: Stores list of (func, args) tuples that will be called
upon timer events. This list can be manipulated directly, or the
functions add_callback and remove_callback can be used.
"""
def __init__(self, *args, **kwargs):
super(TimerQT, self).__init__(*args, **kwargs)
# Create a new timer and connect the timeout() signal to the
# _on_timer method.
self._timer = QtCore.QTimer()
self._timer.timeout.connect(self._on_timer)
self._timer_set_interval()
def __del__(self):
# Probably not necessary in practice, but is good behavior to
# disconnect
try:
TimerBase.__del__(self)
self._timer.timeout.disconnect(self._on_timer)
except RuntimeError:
# Timer C++ object already deleted
pass
def _timer_set_single_shot(self):
self._timer.setSingleShot(self._single)
def _timer_set_interval(self):
self._timer.setInterval(self._interval)
def _timer_start(self):
self._timer.start()
def _timer_stop(self):
self._timer.stop()
class FigureCanvasQT(QtWidgets.QWidget, FigureCanvasBase):
keyvald = {
QtCore.Qt.Key_Control: 'control',
QtCore.Qt.Key_Shift: 'shift',
QtCore.Qt.Key_Alt: 'alt',
QtCore.Qt.Key_Meta: 'super',
QtCore.Qt.Key_Return: 'enter',
QtCore.Qt.Key_Left: 'left',
QtCore.Qt.Key_Up: 'up',
QtCore.Qt.Key_Right: 'right',
QtCore.Qt.Key_Down: 'down',
QtCore.Qt.Key_Escape: 'escape',
QtCore.Qt.Key_F1: 'f1',
QtCore.Qt.Key_F2: 'f2',
QtCore.Qt.Key_F3: 'f3',
QtCore.Qt.Key_F4: 'f4',
QtCore.Qt.Key_F5: 'f5',
QtCore.Qt.Key_F6: 'f6',
QtCore.Qt.Key_F7: 'f7',
QtCore.Qt.Key_F8: 'f8',
QtCore.Qt.Key_F9: 'f9',
QtCore.Qt.Key_F10: 'f10',
QtCore.Qt.Key_F11: 'f11',
QtCore.Qt.Key_F12: 'f12',
QtCore.Qt.Key_Home: 'home',
QtCore.Qt.Key_End: 'end',
QtCore.Qt.Key_PageUp: 'pageup',
QtCore.Qt.Key_PageDown: 'pagedown',
}
# define the modifier keys which are to be collected on keyboard events.
# format is: [(modifier_flag, modifier_name, equivalent_key)
_modifier_keys = [
(QtCore.Qt.MetaModifier, 'super', QtCore.Qt.Key_Meta),
(QtCore.Qt.AltModifier, 'alt', QtCore.Qt.Key_Alt),
(QtCore.Qt.ControlModifier, 'ctrl', QtCore.Qt.Key_Control)
]
_ctrl_modifier = QtCore.Qt.ControlModifier
if sys.platform == 'darwin':
# in OSX, the control and super (aka cmd/apple) keys are switched, so
# switch them back.
keyvald.update({QtCore.Qt.Key_Control: 'super', # cmd/apple key
QtCore.Qt.Key_Meta: 'control',
})
_modifier_keys = [(QtCore.Qt.ControlModifier, 'super',
QtCore.Qt.Key_Control),
(QtCore.Qt.AltModifier, 'alt',
QtCore.Qt.Key_Alt),
(QtCore.Qt.MetaModifier, 'ctrl',
QtCore.Qt.Key_Meta),
]
_ctrl_modifier = QtCore.Qt.MetaModifier
# map Qt button codes to MouseEvent's ones:
buttond = {QtCore.Qt.LeftButton: 1,
QtCore.Qt.MidButton: 2,
QtCore.Qt.RightButton: 3,
}
def __init__(self, figure):
if DEBUG:
print('FigureCanvasQt: ', figure)
_create_qApp()
super(FigureCanvasQT, self).__init__(figure=figure)
self.figure = figure
self.setMouseTracking(True)
self._idle = True
w, h = self.get_width_height()
self.resize(w, h)
def __timerEvent(self, event):
# hide until we can test and fix
self.mpl_idle_event(event)
def enterEvent(self, event):
FigureCanvasBase.enter_notify_event(self, event)
def leaveEvent(self, event):
QtWidgets.QApplication.restoreOverrideCursor()
FigureCanvasBase.leave_notify_event(self, event)
def mousePressEvent(self, event):
x = event.pos().x()
# flipy so y=0 is bottom of canvas
y = self.figure.bbox.height - event.pos().y()
button = self.buttond.get(event.button())
if button is not None:
FigureCanvasBase.button_press_event(self, x, y, button)
if DEBUG:
print('button pressed:', event.button())
def mouseDoubleClickEvent(self, event):
x = event.pos().x()
# flipy so y=0 is bottom of canvas
y = self.figure.bbox.height - event.pos().y()
button = self.buttond.get(event.button())
if button is not None:
FigureCanvasBase.button_press_event(self, x, y,
button, dblclick=True)
if DEBUG:
print ('button doubleclicked:', event.button())
def mouseMoveEvent(self, event):
x = event.x()
# flipy so y=0 is bottom of canvas
y = self.figure.bbox.height - event.y()
FigureCanvasBase.motion_notify_event(self, x, y)
#if DEBUG: print('mouse move')
def mouseReleaseEvent(self, event):
x = event.x()
# flipy so y=0 is bottom of canvas
y = self.figure.bbox.height - event.y()
button = self.buttond.get(event.button())
if button is not None:
FigureCanvasBase.button_release_event(self, x, y, button)
if DEBUG:
print('button released')
def wheelEvent(self, event):
x = event.x()
# flipy so y=0 is bottom of canvas
y = self.figure.bbox.height - event.y()
# from QWheelEvent::delta doc
steps = event.delta()/120
if (event.orientation() == QtCore.Qt.Vertical):
FigureCanvasBase.scroll_event(self, x, y, steps)
if DEBUG:
print('scroll event: delta = %i, '
'steps = %i ' % (event.delta(), steps))
def keyPressEvent(self, event):
key = self._get_key(event)
if key is None:
return
FigureCanvasBase.key_press_event(self, key)
if DEBUG:
print('key press', key)
def keyReleaseEvent(self, event):
key = self._get_key(event)
if key is None:
return
FigureCanvasBase.key_release_event(self, key)
if DEBUG:
print('key release', key)
def resizeEvent(self, event):
w = event.size().width()
h = event.size().height()
if DEBUG:
print('resize (%d x %d)' % (w, h))
print("FigureCanvasQt.resizeEvent(%d, %d)" % (w, h))
dpival = self.figure.dpi
winch = w/dpival
hinch = h/dpival
self.figure.set_size_inches(winch, hinch)
FigureCanvasBase.resize_event(self)
self.draw()
self.update()
QtWidgets.QWidget.resizeEvent(self, event)
def sizeHint(self):
w, h = self.get_width_height()
return QtCore.QSize(w, h)
def minumumSizeHint(self):
return QtCore.QSize(10, 10)
def _get_key(self, event):
if event.isAutoRepeat():
return None
if event.key() < 256:
key = six.text_type(event.text())
# if the control key is being pressed, we don't get the correct
# characters, so interpret them directly from the event.key().
# Unfortunately, this means that we cannot handle key's case
# since event.key() is not case sensitive, whereas event.text() is,
# Finally, since it is not possible to get the CapsLock state
# we cannot accurately compute the case of a pressed key when
# ctrl+shift+p is pressed.
if int(event.modifiers()) & self._ctrl_modifier:
# we always get an uppercase character
key = chr(event.key())
# if shift is not being pressed, lowercase it (as mentioned,
# this does not take into account the CapsLock state)
if not int(event.modifiers()) & QtCore.Qt.ShiftModifier:
key = key.lower()
else:
key = self.keyvald.get(event.key())
if key is not None:
# prepend the ctrl, alt, super keys if appropriate (sorted
# in that order)
for modifier, prefix, Qt_key in self._modifier_keys:
if (event.key() != Qt_key and
int(event.modifiers()) & modifier == modifier):
key = '{0}+{1}'.format(prefix, key)
return key
def new_timer(self, *args, **kwargs):
"""
Creates a new backend-specific subclass of
:class:`backend_bases.Timer`. This is useful for getting
periodic events through the backend's native event
loop. Implemented only for backends with GUIs.
optional arguments:
*interval*
Timer interval in milliseconds
*callbacks*
Sequence of (func, args, kwargs) where func(*args, **kwargs)
will be executed by the timer every *interval*.
"""
return TimerQT(*args, **kwargs)
def flush_events(self):
QtWidgets.qApp.processEvents()
def start_event_loop(self, timeout):
FigureCanvasBase.start_event_loop_default(self, timeout)
start_event_loop.__doc__ = FigureCanvasBase.start_event_loop_default.__doc__
def stop_event_loop(self):
FigureCanvasBase.stop_event_loop_default(self)
stop_event_loop.__doc__ = FigureCanvasBase.stop_event_loop_default.__doc__
def draw_idle(self):
'update drawing area only if idle'
d = self._idle
self._idle = False
def idle_draw(*args):
self.draw()
self._idle = True
if d:
QtCore.QTimer.singleShot(0, idle_draw)
class MainWindow(QtWidgets.QMainWindow):
closing = QtCore.pyqtSignal()
def closeEvent(self, event):
self.closing.emit()
QtWidgets.QMainWindow.closeEvent(self, event)
class FigureManagerQT(FigureManagerBase):
"""
Public attributes
canvas : The FigureCanvas instance
num : The Figure number
toolbar : The qt.QToolBar
window : The qt.QMainWindow
"""
def __init__(self, canvas, num):
if DEBUG:
print('FigureManagerQT.%s' % fn_name())
super(FigureManagerQT, self).__init__(canvas=canvas, num=num)
self.canvas = canvas
self.window = MainWindow()
self.window.closing.connect(canvas.close_event)
self.window.closing.connect(self._widgetclosed)
self.window.setWindowTitle("Figure %d" % num)
image = os.path.join(matplotlib.rcParams['datapath'],
'images', 'matplotlib.png')
self.window.setWindowIcon(QtGui.QIcon(image))
# Give the keyboard focus to the figure instead of the
# manager; StrongFocus accepts both tab and click to focus and
# will enable the canvas to process event w/o clicking.
# ClickFocus only takes the focus is the window has been
# clicked
# on. http://qt-project.org/doc/qt-4.8/qt.html#FocusPolicy-enum or
# http://doc.qt.digia.com/qt/qt.html#FocusPolicy-enum
self.canvas.setFocusPolicy(QtCore.Qt.StrongFocus)
self.canvas.setFocus()
self.window._destroying = False
self.toolbar = self._get_toolbar(self.canvas, self.window)
if self.toolbar is not None:
self.window.addToolBar(self.toolbar)
self.toolbar.message.connect(self._show_message)
tbs_height = self.toolbar.sizeHint().height()
else:
tbs_height = 0
# resize the main window so it will display the canvas with the
# requested size:
cs = canvas.sizeHint()
sbs = self.window.statusBar().sizeHint()
self._status_and_tool_height = tbs_height + sbs.height()
height = cs.height() + self._status_and_tool_height
self.window.resize(cs.width(), height)
self.window.setCentralWidget(self.canvas)
if matplotlib.is_interactive():
self.window.show()
def notify_axes_change(fig):
# This will be called whenever the current axes is changed
if self.toolbar is not None:
self.toolbar.update()
self.canvas.figure.add_axobserver(notify_axes_change)
@QtCore.pyqtSlot()
def _show_message(self, s):
# Fixes a PySide segfault.
self.window.statusBar().showMessage(s)
def full_screen_toggle(self):
if self.window.isFullScreen():
self.window.showNormal()
else:
self.window.showFullScreen()
def _widgetclosed(self):
if self.window._destroying:
return
self.window._destroying = True
try:
Gcf.destroy(self.num)
except AttributeError:
pass
# It seems that when the python session is killed,
# Gcf can get destroyed before the Gcf.destroy
# line is run, leading to a useless AttributeError.
def _get_toolbar(self, canvas, parent):
# must be inited after the window, drawingArea and figure
# attrs are set
if matplotlib.rcParams['toolbar'] == 'toolbar2':
toolbar = NavigationToolbar2QT(canvas, parent, False)
else:
toolbar = None
return toolbar
def resize(self, width, height):
'set the canvas size in pixels'
self.window.resize(width, height + self._status_and_tool_height)
def show(self):
self.window.show()
def destroy(self, *args):
if self.window._destroying:
return
self.window._destroying = True
self.window.destroyed.connect(self._widgetclosed)
if self.toolbar:
self.toolbar.destroy()
if DEBUG:
print("destroy figure manager")
self.window.close()
def get_window_title(self):
return str(self.window.windowTitle())
def set_window_title(self, title):
self.window.setWindowTitle(title)
class NavigationToolbar2QT(QtWidgets.QToolBar, NavigationToolbar2):
message = QtCore.pyqtSignal(str)
def __init__(self, canvas, parent, coordinates=True):
""" coordinates: should we show the coordinates on the right? """
self.canvas = canvas
self.coordinates = coordinates
self._actions = {}
"""A mapping of toolitem method names to their QActions"""
super(NavigationToolbar2QT, self).__init__(canvas=canvas, parent=parent)
def _icon(self, name):
return QtGui.QIcon(os.path.join(self.basedir, name))
def _init_toolbar(self):
self.basedir = os.path.join(matplotlib.rcParams['datapath'], 'images')
for text, tooltip_text, image_file, callback in self.toolitems:
if text is None:
self.addSeparator()
else:
a = self.addAction(self._icon(image_file + '.png'),
text, getattr(self, callback))
self._actions[callback] = a
if callback in ['zoom', 'pan']:
a.setCheckable(True)
if tooltip_text is not None:
a.setToolTip(tooltip_text)
if figureoptions is not None:
a = self.addAction(self._icon("qt5_editor_options.png"),
'Customize', self.edit_parameters)
a.setToolTip('Edit curves line and axes parameters')
self.buttons = {}
# Add the x,y location widget at the right side of the toolbar
# The stretch factor is 1 which means any resizing of the toolbar
# will resize this label instead of the buttons.
if self.coordinates:
self.locLabel = QtWidgets.QLabel("", self)
self.locLabel.setAlignment(
QtCore.Qt.AlignRight | QtCore.Qt.AlignTop)
self.locLabel.setSizePolicy(
QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Ignored))
labelAction = self.addWidget(self.locLabel)
labelAction.setVisible(True)
# reference holder for subplots_adjust window
self.adj_window = None
if figureoptions is not None:
def edit_parameters(self):
allaxes = self.canvas.figure.get_axes()
if len(allaxes) == 1:
axes = allaxes[0]
else:
titles = []
for axes in allaxes:
title = axes.get_title()
ylabel = axes.get_ylabel()
if title:
fmt = "%(title)s"
if ylabel:
fmt += ": %(ylabel)s"
fmt += " (%(axes_repr)s)"
elif ylabel:
fmt = "%(axes_repr)s (%(ylabel)s)"
else:
fmt = "%(axes_repr)s"
titles.append(fmt % dict(title=title,
ylabel=ylabel,
axes_repr=repr(axes)))
item, ok = QtWidgets.QInputDialog.getItem(self, 'Customize',
'Select axes:',
titles,
0, False)
if ok:
axes = allaxes[titles.index(six.text_type(item))]
else:
return
figureoptions.figure_edit(axes, self)
def _update_buttons_checked(self):
#sync button checkstates to match active mode
self._actions['pan'].setChecked(self._active == 'PAN')
self._actions['zoom'].setChecked(self._active == 'ZOOM')
def pan(self, *args):
super(NavigationToolbar2QT, self).pan(*args)
self._update_buttons_checked()
def zoom(self, *args):
super(NavigationToolbar2QT, self).zoom(*args)
self._update_buttons_checked()
def dynamic_update(self):
self.canvas.draw()
def set_message(self, s):
self.message.emit(s)
if self.coordinates:
self.locLabel.setText(s.replace(', ', '\n'))
def set_cursor(self, cursor):
if DEBUG:
print('Set cursor', cursor)
self.canvas.setCursor(cursord[cursor])
def draw_rubberband(self, event, x0, y0, x1, y1):
height = self.canvas.figure.bbox.height
y1 = height - y1
y0 = height - y0
w = abs(x1 - x0)
h = abs(y1 - y0)
rect = [int(val)for val in (min(x0, x1), min(y0, y1), w, h)]
self.canvas.drawRectangle(rect)
def configure_subplots(self):
self.adj_window = QtWidgets.QMainWindow()
win = self.adj_window
win.setWindowTitle("Subplot Configuration Tool")
image = os.path.join(matplotlib.rcParams['datapath'],
'images', 'matplotlib.png')
win.setWindowIcon(QtGui.QIcon(image))
tool = SubplotToolQt(self.canvas.figure, win)
win.setCentralWidget(tool)
win.setSizePolicy(QtWidgets.QSizePolicy.Preferred,
QtWidgets.QSizePolicy.Preferred)
win.show()
def _get_canvas(self, fig):
return FigureCanvasQT(fig)
def save_figure(self, *args):
filetypes = self.canvas.get_supported_filetypes_grouped()
sorted_filetypes = list(six.iteritems(filetypes))
sorted_filetypes.sort()
default_filetype = self.canvas.get_default_filetype()
startpath = matplotlib.rcParams.get('savefig.directory', '')
startpath = os.path.expanduser(startpath)
start = os.path.join(startpath, self.canvas.get_default_filename())
filters = []
selectedFilter = None
for name, exts in sorted_filetypes:
exts_list = " ".join(['*.%s' % ext for ext in exts])
filter = '%s (%s)' % (name, exts_list)
if default_filetype in exts:
selectedFilter = filter
filters.append(filter)
filters = ';;'.join(filters)
fname = _getSaveFileName(self, "Choose a filename to save to",
start, filters, selectedFilter)
if fname:
if startpath == '':
# explicitly missing key or empty str signals to use cwd
matplotlib.rcParams['savefig.directory'] = startpath
else:
# save dir for next time
matplotlib.rcParams['savefig.directory'] = os.path.dirname(
six.text_type(fname))
try:
self.canvas.print_figure(six.text_type(fname))
except Exception as e:
QtWidgets.QMessageBox.critical(
self, "Error saving file", str(e),
QtWidgets.QMessageBox.Ok, QtWidgets.QMessageBox.NoButton)
class SubplotToolQt(QtWidgets.QWidget, SubplotTool):
def __init__(self, targetfig, parent):
QtWidgets.QWidget.__init__(self, parent)
self.targetfig = targetfig
self.parent = parent
self.sliderleft = QtWidgets.QSlider(QtCore.Qt.Horizontal)
self.sliderbottom = QtWidgets.QSlider(QtCore.Qt.Vertical)
self.sliderright = QtWidgets.QSlider(QtCore.Qt.Horizontal)
self.slidertop = QtWidgets.QSlider(QtCore.Qt.Vertical)
self.sliderwspace = QtWidgets.QSlider(QtCore.Qt.Horizontal)
self.sliderhspace = QtWidgets.QSlider(QtCore.Qt.Vertical)
# constraints
self.sliderleft.valueChanged.connect(self.sliderright.setMinimum)
self.sliderright.valueChanged.connect(self.sliderleft.setMaximum)
self.sliderbottom.valueChanged.connect(self.slidertop.setMinimum)
self.slidertop.valueChanged.connect(self.sliderbottom.setMaximum)
sliders = (self.sliderleft, self.sliderbottom, self.sliderright,
self.slidertop, self.sliderwspace, self.sliderhspace,)
adjustments = ('left:', 'bottom:', 'right:',
'top:', 'wspace:', 'hspace:')
for slider, adjustment in zip(sliders, adjustments):
slider.setMinimum(0)
slider.setMaximum(1000)
slider.setSingleStep(5)
layout = QtWidgets.QGridLayout()
leftlabel = QtWidgets.QLabel('left')
layout.addWidget(leftlabel, 2, 0)
layout.addWidget(self.sliderleft, 2, 1)
toplabel = QtWidgets.QLabel('top')
layout.addWidget(toplabel, 0, 2)
layout.addWidget(self.slidertop, 1, 2)
layout.setAlignment(self.slidertop, QtCore.Qt.AlignHCenter)
bottomlabel = QtWidgets.QLabel('bottom') # this might not ever be used
layout.addWidget(bottomlabel, 4, 2)
layout.addWidget(self.sliderbottom, 3, 2)
layout.setAlignment(self.sliderbottom, QtCore.Qt.AlignHCenter)
rightlabel = QtWidgets.QLabel('right')
layout.addWidget(rightlabel, 2, 4)
layout.addWidget(self.sliderright, 2, 3)
hspacelabel = QtWidgets.QLabel('hspace')
layout.addWidget(hspacelabel, 0, 6)
layout.setAlignment(hspacelabel, QtCore.Qt.AlignHCenter)
layout.addWidget(self.sliderhspace, 1, 6)
layout.setAlignment(self.sliderhspace, QtCore.Qt.AlignHCenter)
wspacelabel = QtWidgets.QLabel('wspace')
layout.addWidget(wspacelabel, 4, 6)
layout.setAlignment(wspacelabel, QtCore.Qt.AlignHCenter)
layout.addWidget(self.sliderwspace, 3, 6)
layout.setAlignment(self.sliderwspace, QtCore.Qt.AlignBottom)
layout.setRowStretch(1, 1)
layout.setRowStretch(3, 1)
layout.setColumnStretch(1, 1)
layout.setColumnStretch(3, 1)
layout.setColumnStretch(6, 1)
self.setLayout(layout)
self.sliderleft.setSliderPosition(int(targetfig.subplotpars.left*1000))
self.sliderbottom.setSliderPosition(
int(targetfig.subplotpars.bottom*1000))
self.sliderright.setSliderPosition(
int(targetfig.subplotpars.right*1000))
self.slidertop.setSliderPosition(int(targetfig.subplotpars.top*1000))
self.sliderwspace.setSliderPosition(
int(targetfig.subplotpars.wspace*1000))
self.sliderhspace.setSliderPosition(
int(targetfig.subplotpars.hspace*1000))
self.sliderleft.valueChanged.connect(self.funcleft)
self.sliderbottom.valueChanged.connect(self.funcbottom)
self.sliderright.valueChanged.connect(self.funcright)
self.slidertop.valueChanged.connect(self.functop)
self.sliderwspace.valueChanged.connect(self.funcwspace)
self.sliderhspace.valueChanged.connect(self.funchspace)
def funcleft(self, val):
if val == self.sliderright.value():
val -= 1
self.targetfig.subplots_adjust(left=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def funcright(self, val):
if val == self.sliderleft.value():
val += 1
self.targetfig.subplots_adjust(right=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def funcbottom(self, val):
if val == self.slidertop.value():
val -= 1
self.targetfig.subplots_adjust(bottom=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def functop(self, val):
if val == self.sliderbottom.value():
val += 1
self.targetfig.subplots_adjust(top=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def funcwspace(self, val):
self.targetfig.subplots_adjust(wspace=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def funchspace(self, val):
self.targetfig.subplots_adjust(hspace=val/1000.)
if self.drawon:
self.targetfig.canvas.draw()
def error_msg_qt(msg, parent=None):
if not is_string_like(msg):
msg = ','.join(map(str, msg))
QtWidgets.QMessageBox.warning(None, "Matplotlib", msg,
QtWidgets.QMessageBox.Ok)
def exception_handler(type, value, tb):
"""Handle uncaught exceptions
It does not catch SystemExit
"""
msg = ''
# get the filename attribute if available (for IOError)
if hasattr(value, 'filename') and value.filename is not None:
msg = value.filename + ': '
if hasattr(value, 'strerror') and value.strerror is not None:
msg += value.strerror
else:
msg += str(value)
if len(msg):
error_msg_qt(msg)
FigureManager = FigureManagerQT
