# http://pyrocko.org - GPLv3
#
# The Pyrocko Developers, 21st Century
# ---|P------/S----------~Lg----------
from __future__ import absolute_import, print_function
import sys
import math
import time
import numpy as num
import logging
import enum
from matplotlib.cm import get_cmap
from matplotlib.colors import Normalize
from .qt_compat import qc, qg, qw, use_pyqt5
from .marker import Marker, PhaseMarker, EventMarker # noqa
from .marker import MarkerParseError, MarkerOneNSLCRequired # noqa
from .marker import load_markers, save_markers # noqa
from pyrocko import plot
if sys.version_info > (3,):
buffer = memoryview
logger = logging.getLogger('pyrocko.gui.util')
def make_QPolygonF(xdata, ydata):
assert len(xdata) == len(ydata)
qpoints = qg.QPolygonF(len(ydata))
vptr = qpoints.data()
vptr.setsize(len(ydata)*8*2)
aa = num.ndarray(
shape=(len(ydata), 2),
dtype=num.float64,
buffer=buffer(vptr))
aa.setflags(write=True)
aa[:, 0] = xdata
aa[:, 1] = ydata
return qpoints
def get_colormap_qimage(cmap_name, vmin=None, vmax=None):
NCOLORS = 512
norm = Normalize()
norm.vmin = vmin
norm.vmax = vmax
return qg.QImage(
get_cmap(cmap_name)(
norm(num.linspace(0., 1., NCOLORS)),
alpha=None, bytes=True),
NCOLORS, 1, qg.QImage.Format_RGBX8888)
class Label(object):
def __init__(
self, p, x, y, label_str,
label_bg=None,
anchor='BL',
outline=False,
font=None,
color=None):
text = qg.QTextDocument()
if font:
text.setDefaultFont(font)
text.setDefaultStyleSheet('span { color: %s; }' % color.name())
text.setHtml('<span>%s</span>' % label_str)
s = text.size()
rect = qc.QRectF(0., 0., s.width(), s.height())
tx, ty = x, y
if 'B' in anchor:
ty -= rect.height()
if 'R' in anchor:
tx -= rect.width()
if 'M' in anchor:
ty -= rect.height()/2.
if 'C' in anchor:
tx -= rect.width()/2.
rect.translate(tx, ty)
self.rect = rect
self.text = text
self.outline = outline
self.label_bg = label_bg
self.color = color
self.p = p
def draw(self):
p = self.p
rect = self.rect
tx = rect.left()
ty = rect.top()
if self.outline:
oldpen = p.pen()
oldbrush = p.brush()
p.setBrush(self.label_bg)
rect.adjust(-2., 0., 2., 0.)
p.drawRect(rect)
p.setPen(oldpen)
p.setBrush(oldbrush)
else:
if self.label_bg:
p.fillRect(rect, self.label_bg)
p.translate(tx, ty)
self.text.drawContents(p)
p.translate(-tx, -ty)
def draw_label(p, x, y, label_str, label_bg, anchor='BL', outline=False):
fm = p.fontMetrics()
label = label_str
rect = fm.boundingRect(label)
tx, ty = x, y
if 'T' in anchor:
ty += rect.height()
if 'R' in anchor:
tx -= rect.width()
if 'M' in anchor:
ty += rect.height()/2.
if 'C' in anchor:
tx -= rect.width()/2.
rect.translate(tx, ty)
if outline:
oldpen = p.pen()
oldbrush = p.brush()
p.setBrush(label_bg)
rect.adjust(-2., 0., 2., 0.)
p.drawRect(rect)
p.setPen(oldpen)
p.setBrush(oldbrush)
else:
p.fillRect(rect, label_bg)
p.drawText(tx, ty, label)
def get_err_palette():
err_palette = qg.QPalette()
err_palette.setColor(qg.QPalette.Base, qg.QColor(255, 200, 200))
return err_palette
[docs]class MySlider(qw.QSlider):
[docs] def wheelEvent(self, ev):
ev.ignore()
[docs] def keyPressEvent(self, ev):
ev.ignore()
[docs]class MyValueEdit(qw.QLineEdit):
edited = qc.pyqtSignal(float)
def __init__(
self,
low_is_none=False,
high_is_none=False,
low_is_zero=False,
*args, **kwargs):
qw.QLineEdit.__init__(self, *args, **kwargs)
self.value = 0.
self.mi = 0.
self.ma = 1.
self.low_is_none = low_is_none
self.high_is_none = high_is_none
self.low_is_zero = low_is_zero
self.editingFinished.connect(
self.myEditingFinished)
self.lock = False
def setRange(self, mi, ma):
self.mi = mi
self.ma = ma
def setValue(self, value):
if not self.lock:
self.value = value
self.setPalette(qw.QApplication.palette())
self.adjust_text()
def myEditingFinished(self):
try:
t = str(self.text()).strip()
if self.low_is_none and t in ('off', 'below'):
value = self.mi
elif self.high_is_none and t in ('off', 'above'):
value = self.ma
elif self.low_is_zero and float(t) == 0.0:
value = self.mi
else:
value = float(t)
if not (self.mi <= value <= self.ma):
raise Exception("out of range")
if value != self.value:
self.value = value
self.lock = True
self.edited.emit(value)
self.setPalette(qw.QApplication.palette())
except Exception:
self.setPalette(get_err_palette())
self.lock = False
def adjust_text(self):
t = ('%8.5g' % self.value).strip()
if self.low_is_zero and self.value == self.mi:
t = '0'
if self.low_is_none and self.value == self.mi:
if self.high_is_none:
t = 'below'
else:
t = 'off'
if self.high_is_none and self.value == self.ma:
if self.low_is_none:
t = 'above'
else:
t = 'off'
self.setText(t)
[docs]class ValControl(qc.QObject):
valchange = qc.pyqtSignal(object, int)
def __init__(
self,
low_is_none=False,
high_is_none=False,
low_is_zero=False,
*args):
qc.QObject.__init__(self, *args)
self.lname = qw.QLabel("name")
self.lname.setSizePolicy(
qw.QSizePolicy(qw.QSizePolicy.Minimum, qw.QSizePolicy.Minimum))
self.lvalue = MyValueEdit(
low_is_none=low_is_none,
high_is_none=high_is_none,
low_is_zero=low_is_zero)
self.lvalue.setFixedWidth(100)
self.slider = MySlider(qc.Qt.Horizontal)
self.slider.setSizePolicy(
qw.QSizePolicy(qw.QSizePolicy.Expanding, qw.QSizePolicy.Minimum))
self.slider.setMaximum(10000)
self.slider.setSingleStep(100)
self.slider.setPageStep(1000)
self.slider.setTickPosition(qw.QSlider.NoTicks)
self.slider.setFocusPolicy(qc.Qt.ClickFocus)
self.low_is_none = low_is_none
self.high_is_none = high_is_none
self.low_is_zero = low_is_zero
self.slider.valueChanged.connect(
self.slided)
self.lvalue.edited.connect(
self.edited)
self.mute = False
def widgets(self):
return self.lname, self.lvalue, self.slider
def s2v(self, svalue):
if self.ma == 0 or self.mi == 0:
return 0
a = math.log(self.ma/self.mi) / 10000.
return self.mi*math.exp(a*svalue)
def v2s(self, value):
if value == 0 or self.mi == 0:
return 0
a = math.log(self.ma/self.mi) / 10000.
return int(round(math.log(value/self.mi) / a))
def setup(self, name, mi, ma, cur, ind):
self.lname.setText(name)
self.mi = mi
self.ma = ma
self.ind = ind
self.lvalue.setRange(self.s2v(0), self.s2v(10000))
self.set_value(cur)
def set_range(self, mi, ma):
if self.mi == mi and self.ma == ma:
return
vput = None
if self.cursl == 0:
vput = mi
if self.cursl == 10000:
vput = ma
self.mi = mi
self.ma = ma
self.lvalue.setRange(self.s2v(0), self.s2v(10000))
if vput is not None:
self.set_value(vput)
else:
if self.cur < mi:
self.set_value(mi)
if self.cur > ma:
self.set_value(ma)
def set_value(self, cur):
if cur is None:
if self.low_is_none:
cur = self.mi
elif self.high_is_none:
cur = self.ma
if cur == 0.0:
if self.low_is_zero:
cur = self.mi
self.mute = True
self.cur = cur
self.cursl = self.v2s(cur)
self.slider.blockSignals(True)
self.slider.setValue(self.cursl)
self.slider.blockSignals(False)
self.lvalue.blockSignals(True)
if self.cursl in (0, 10000):
self.lvalue.setValue(self.s2v(self.cursl))
else:
self.lvalue.setValue(self.cur)
self.lvalue.blockSignals(False)
self.mute = False
def get_value(self):
return self.cur
def slided(self, val):
if self.cursl != val:
self.cursl = val
self.cur = self.s2v(self.cursl)
self.lvalue.blockSignals(True)
self.lvalue.setValue(self.cur)
self.lvalue.blockSignals(False)
self.fire_valchange()
def edited(self, val):
if self.cur != val:
self.cur = val
cursl = self.v2s(val)
if (cursl != self.cursl):
self.slider.blockSignals(True)
self.slider.setValue(cursl)
self.slider.blockSignals(False)
self.cursl = cursl
self.fire_valchange()
def fire_valchange(self):
if self.mute:
return
cur = self.cur
if self.cursl == 0:
if self.low_is_none:
cur = None
elif self.low_is_zero:
cur = 0.0
if self.cursl == 10000 and self.high_is_none:
cur = None
self.valchange.emit(cur, int(self.ind))
[docs]class LinValControl(ValControl):
def s2v(self, svalue):
return svalue/10000. * (self.ma-self.mi) + self.mi
def v2s(self, value):
if self.ma == self.mi:
return 0
return int(round((value-self.mi)/(self.ma-self.mi) * 10000.))
[docs]class ColorbarControl(qc.QObject):
AVAILABLE_CMAPS = (
'viridis',
'plasma',
'magma',
'seismic',
'RdBu',
'Reds',
'YlGn',
'binary',
'copper'
)
DEFAULT_CMAP = 'viridis'
cmap_changed = qc.pyqtSignal(str)
show_absolute_toggled = qc.pyqtSignal(bool)
show_integrate_toggled = qc.pyqtSignal(bool)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.cmap_name = self.DEFAULT_CMAP
self.lname = qw.QLabel("Colormap")
self.lname.setSizePolicy(
qw.QSizePolicy(qw.QSizePolicy.Minimum, qw.QSizePolicy.Minimum))
self.cmap_options = qw.QComboBox()
self.cmap_options.setIconSize(qc.QSize(64, 12))
for ic, cmap in enumerate(self.AVAILABLE_CMAPS):
pixmap = qg.QPixmap.fromImage(
get_colormap_qimage(cmap))
icon = qg.QIcon(pixmap.scaled(64, 12))
self.cmap_options.addItem(icon, '', cmap)
self.cmap_options.setItemData(ic, cmap, qc.Qt.ToolTipRole)
# self.cmap_options.setCurrentIndex(self.cmap_name)
self.cmap_options.currentIndexChanged.connect(self.set_cmap)
self.cmap_options.setSizePolicy(
qw.QSizePolicy(qw.QSizePolicy.Minimum, qw.QSizePolicy.Minimum))
self.colorslider = ColorbarSlider(self)
self.colorslider.setSizePolicy(
qw.QSizePolicy.MinimumExpanding | qw.QSizePolicy.ExpandFlag,
qw.QSizePolicy.MinimumExpanding | qw.QSizePolicy.ExpandFlag
)
self.clip_changed = self.colorslider.clip_changed
btn_size = qw.QSizePolicy(
qw.QSizePolicy.Maximum | qw.QSizePolicy.ShrinkFlag,
qw.QSizePolicy.Maximum | qw.QSizePolicy.ShrinkFlag)
self.symetry_toggle = qw.QPushButton()
self.symetry_toggle.setIcon(
qg.QIcon.fromTheme('object-flip-horizontal'))
self.symetry_toggle.setToolTip('Symetric clip values')
self.symetry_toggle.setSizePolicy(btn_size)
self.symetry_toggle.setCheckable(True)
self.symetry_toggle.toggled.connect(self.toggle_symetry)
self.symetry_toggle.setChecked(True)
self.reverse_toggle = qw.QPushButton()
self.reverse_toggle.setIcon(
qg.QIcon.fromTheme('object-rotate-right'))
self.reverse_toggle.setToolTip('Reverse the colormap')
self.reverse_toggle.setSizePolicy(btn_size)
self.reverse_toggle.setCheckable(True)
self.reverse_toggle.toggled.connect(self.toggle_reverse_cmap)
self.abs_toggle = qw.QPushButton()
self.abs_toggle.setIcon(
qg.QIcon.fromTheme('go-bottom'))
self.abs_toggle.setToolTip('Show absolute values')
self.abs_toggle.setSizePolicy(btn_size)
self.abs_toggle.setCheckable(True)
self.abs_toggle.toggled.connect(self.toggle_absolute)
self.int_toggle = qw.QPushButton()
self.int_toggle.setText('∫')
self.int_toggle.setToolTip(
'Integrate traces (e.g. strain rate -> strain)')
self.int_toggle.setSizePolicy(btn_size)
self.int_toggle.setCheckable(True)
print(self.abs_toggle.width())
self.int_toggle.setMaximumSize(
24,
self.int_toggle.maximumSize().height())
self.int_toggle.toggled.connect(self.show_integrate_toggled.emit)
v_splitter = qw.QFrame()
v_splitter.setFrameShape(qw.QFrame.VLine)
v_splitter.setFrameShadow(qw.QFrame.Sunken)
self.controls = qw.QWidget()
layout = qw.QHBoxLayout()
layout.addWidget(self.colorslider)
layout.addWidget(self.symetry_toggle)
layout.addWidget(self.reverse_toggle)
layout.addWidget(v_splitter)
layout.addWidget(self.abs_toggle)
layout.addWidget(self.int_toggle)
self.controls.setLayout(layout)
def set_cmap(self, idx):
self.set_cmap_name(self.cmap_options.itemData(idx))
def set_cmap_name(self, cmap_name):
self.cmap_name = cmap_name
self.colorslider.set_cmap_name(cmap_name)
self.cmap_changed.emit(cmap_name)
def get_cmap(self):
return self.cmap_name
def toggle_symetry(self, toggled):
self.colorslider.set_symetry(toggled)
def toggle_reverse_cmap(self):
cmap = self.get_cmap()
if cmap.endswith('_r'):
r_cmap = cmap.rstrip('_r')
else:
r_cmap = cmap + '_r'
self.set_cmap_name(r_cmap)
def toggle_absolute(self, toggled):
self.symetry_toggle.setChecked(not toggled)
self.show_absolute_toggled.emit(toggled)
def widgets(self):
return (self.lname, self.cmap_options, self.controls)
[docs]class ColorbarSlider(qw.QWidget):
DEFAULT_CMAP = 'viridis'
CORNER_THRESHOLD = 10
MIN_WIDTH = .05
clip_changed = qc.pyqtSignal(float, float)
[docs] class COMPONENTS(enum.Enum):
LeftLine = 1
RightLine = 2
Center = 3
def __init__(self, *args, cmap_name=None):
super().__init__()
self.cmap_name = cmap_name or self.DEFAULT_CMAP
self.clip_min = 0.
self.clip_max = 1.
self._sym_locked = True
self._mouse_inside = False
self._window = None
self._old_pos = None
self._component_grabbed = None
self.setMouseTracking(True)
def set_cmap_name(self, cmap_name):
self.cmap_name = cmap_name
self.repaint()
def get_cmap_name(self):
return self.cmap_name
def set_symetry(self, symetry):
self._sym_locked = symetry
if self._sym_locked:
clip_max = 1. - min(self.clip_min, 1.-self.clip_max)
clip_min = 1. - clip_max
self.set_clip(clip_min, clip_max)
def _set_window(self, window):
self._window = window
def _get_left_line(self):
rect = self._get_active_rect()
if not rect:
return
return qc.QLineF(rect.left(), 0, rect.left(), rect.height())
def _get_right_line(self):
rect = self._get_active_rect()
if not rect:
return
return qc.QLineF(rect.right(), 0, rect.right(), rect.height())
def _get_active_rect(self):
if not self._window:
return
rect = qc.QRect(self._window)
width = rect.width()
rect.setLeft(width * self.clip_min)
rect.setRight(width * self.clip_max)
return rect
def set_clip(self, clip_min, clip_max):
if clip_min < 0. or clip_max > 1.:
return
if clip_max - clip_min < self.MIN_WIDTH:
return
self.clip_min = clip_min
self.clip_max = clip_max
self.repaint()
self.clip_changed.emit(self.clip_min, self.clip_max)
[docs] def mousePressEvent(self, event):
act_rect = self._get_active_rect()
if event.buttons() != qc.Qt.MouseButton.LeftButton:
self._component_grabbed = None
return
dist_left = abs(event.pos().x() - act_rect.left())
dist_right = abs(event.pos().x() - act_rect.right())
if 0 < dist_left < self.CORNER_THRESHOLD:
self._component_grabbed = self.COMPONENTS.LeftLine
self.setCursor(qg.QCursor(qc.Qt.CursorShape.SizeHorCursor))
elif 0 < dist_right < self.CORNER_THRESHOLD:
self._component_grabbed = self.COMPONENTS.RightLine
self.setCursor(qg.QCursor(qc.Qt.CursorShape.SizeHorCursor))
else:
self.setCursor(qg.QCursor())
[docs] def mouseReleaseEvent(self, event):
self._component_grabbed = None
self.repaint()
[docs] def mouseDoubleClickEvent(self, event):
self.set_clip(0., 1.)
[docs] def wheelEvent(self, event):
event.accept()
if not self._sym_locked:
return
delta = -event.angleDelta().y() / 5e3
clip_min_new = max(self.clip_min + delta, 0.)
clip_max_new = min(self.clip_max - delta, 1.)
self._mouse_inside = True
self.set_clip(clip_min_new, clip_max_new)
[docs] def mouseMoveEvent(self, event):
act_rect = self._get_active_rect()
if not self._component_grabbed:
dist_left = abs(event.pos().x() - act_rect.left())
dist_right = abs(event.pos().x() - act_rect.right())
if 0 <= dist_left < self.CORNER_THRESHOLD or \
0 <= dist_right < self.CORNER_THRESHOLD:
self.setCursor(qg.QCursor(qc.Qt.CursorShape.SizeHorCursor))
else:
self.setCursor(qg.QCursor())
if self._old_pos and self._component_grabbed:
shift = (event.pos() - self._old_pos).x() / self._window.width()
if self._component_grabbed is self.COMPONENTS.LeftLine:
clip_min_new = max(self.clip_min + shift, 0.)
clip_max_new = \
min(self.clip_max - shift, 1.) \
if self._sym_locked else self.clip_max
elif self._component_grabbed is self.COMPONENTS.RightLine:
clip_max_new = min(self.clip_max + shift, 1.)
clip_min_new = \
max(self.clip_min - shift, 0.) \
if self._sym_locked else self.clip_min
self.set_clip(clip_min_new, clip_max_new)
self._old_pos = event.pos()
[docs] def enterEvent(self, e):
self._mouse_inside = True
self.repaint()
[docs] def leaveEvent(self, e):
self._mouse_inside = False
self.repaint()
[docs] def paintEvent(self, e):
p = qg.QPainter(self)
self._set_window(p.window())
p.drawImage(
p.window(),
get_colormap_qimage(self.cmap_name, self.clip_min, self.clip_max))
left_line = self._get_left_line()
right_line = self._get_right_line()
pen = qg.QPen()
pen.setWidth(2)
pen.setStyle(qc.Qt.DotLine)
pen.setBrush(qc.Qt.white)
p.setPen(pen)
p.setCompositionMode(
qg.QPainter.CompositionMode.CompositionMode_Difference)
p.drawLine(left_line)
p.drawLine(right_line)
label_rect = self._get_active_rect()
label_rect.setLeft(label_rect.left() + 5)
label_rect.setRight(label_rect.right() - 5)
label_left_rect = qc.QRectF(label_rect)
label_right_rect = qc.QRectF(label_rect)
label_left_align = qc.Qt.AlignLeft
label_right_align = qc.Qt.AlignRight
if label_rect.left() > 50:
label_left_rect.setRight(label_rect.left() - 10)
label_left_rect.setLeft(0)
label_left_align = qc.Qt.AlignRight
if self._window.right() - label_rect.right() > 50:
label_right_rect.setLeft(label_rect.right() + 10)
label_right_rect.setRight(self._window.right())
label_right_align = qc.Qt.AlignLeft
if self._mouse_inside or self._component_grabbed:
p.drawText(
label_left_rect,
label_left_align | qc.Qt.AlignVCenter,
'%d%%' % round(self.clip_min * 100))
p.drawText(
label_right_rect,
label_right_align | qc.Qt.AlignVCenter,
'%d%%' % round(self.clip_max * 100))
class Progressbar(object):
def __init__(self, parent, name, can_abort=True):
self.parent = parent
self.name = name
self.label = qw.QLabel(name, parent)
self.pbar = qw.QProgressBar(parent)
self.aborted = False
self.time_last_update = 0.
if can_abort:
self.abort_button = qw.QPushButton('Abort', parent)
self.abort_button.clicked.connect(
self.abort)
else:
self.abort_button = None
def widgets(self):
widgets = [self.label, self.bar()]
if self.abort_button:
widgets.append(self.abort_button)
return widgets
def bar(self):
return self.pbar
def abort(self):
self.aborted = True
[docs]class Progressbars(qw.QFrame):
def __init__(self, parent):
qw.QFrame.__init__(self, parent)
self.layout = qw.QGridLayout()
self.setLayout(self.layout)
self.bars = {}
self.start_times = {}
self.hide()
def set_status(self, name, value, can_abort=True):
now = time.time()
if name not in self.start_times:
self.start_times[name] = now
return False
else:
if now < self.start_times[name] + 1.0:
return False
self.start_times.get(name, 0.0)
value = int(round(value))
if name not in self.bars:
if value == 100:
return False
self.bars[name] = Progressbar(self, name, can_abort=can_abort)
self.make_layout()
bar = self.bars[name]
if bar.time_last_update < now - 0.1 or value == 100:
bar.bar().setValue(value)
bar.time_last_update = now
if value == 100:
del self.bars[name]
del self.start_times[name]
self.make_layout()
for w in bar.widgets():
w.setParent(None)
return bar.aborted
def make_layout(self):
while True:
c = self.layout.takeAt(0)
if c is None:
break
for ibar, bar in enumerate(self.bars.values()):
for iw, w in enumerate(bar.widgets()):
self.layout.addWidget(w, ibar, iw)
if not self.bars:
self.hide()
else:
self.show()
def tohex(c):
return '%02x%02x%02x' % c
def to01(c):
return c[0]/255., c[1]/255., c[2]/255.
def beautify_axes(axes):
try:
from cycler import cycler
axes.set_prop_cycle(
cycler('color', [to01(x) for x in plot.graph_colors]))
except (ImportError, KeyError):
axes.set_color_cycle(list(map(to01, plot.graph_colors)))
xa = axes.get_xaxis()
ya = axes.get_yaxis()
for attr in ('labelpad', 'LABELPAD'):
if hasattr(xa, attr):
setattr(xa, attr, xa.get_label().get_fontsize())
setattr(ya, attr, ya.get_label().get_fontsize())
break
[docs]class WebKitFrame(qw.QFrame):
def __init__(self, url=None, parent=None):
if use_pyqt5:
try:
from PyQt5.QtWebEngineWidgets import QWebEngineView as WebView
except (ImportError):
from PyQt5.QtWebKitWidgets import QWebView as WebView
else:
from PyQt4.QtWebKit import QWebView as WebView
qw.QFrame.__init__(self, parent)
layout = qw.QGridLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
self.setLayout(layout)
self.web_widget = WebView()
layout.addWidget(self.web_widget, 0, 0)
if url:
self.web_widget.load(qc.QUrl(url))
[docs]class VTKFrame(qw.QFrame):
def __init__(self, actors=None, parent=None):
import vtk
from vtk.qt4.QVTKRenderWindowInteractor import \
QVTKRenderWindowInteractor
qw.QFrame.__init__(self, parent)
layout = qw.QGridLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
self.setLayout(layout)
self.vtk_widget = QVTKRenderWindowInteractor(self)
layout.addWidget(self.vtk_widget, 0, 0)
self.renderer = vtk.vtkRenderer()
self.vtk_widget.GetRenderWindow().AddRenderer(self.renderer)
self.iren = self.vtk_widget.GetRenderWindow().GetInteractor()
if actors:
for a in actors:
self.renderer.AddActor(a)
def init(self):
self.iren.Initialize()
def add_actor(self, actor):
self.renderer.AddActor(actor)
[docs]class PixmapFrame(qw.QLabel):
def __init__(self, filename=None, parent=None):
qw.QLabel.__init__(self, parent)
self.setAlignment(qc.Qt.AlignCenter)
self.setContentsMargins(0, 0, 0, 0)
self.menu = qw.QMenu(self)
action = qw.QAction('Save as', self.menu)
action.triggered.connect(self.save_pixmap)
self.menu.addAction(action)
if filename:
self.load_pixmap(filename)
def load_pixmap(self, filename):
self.pixmap = qg.QPixmap(filename)
self.setPixmap(self.pixmap)
def save_pixmap(self, filename=None):
if not filename:
filename, _ = qw.QFileDialog.getSaveFileName(
self.parent(), caption='save as')
self.pixmap.save(filename)
