def eventFilter(self, obj, event, *args, **kwargs):
"""
This will assuming that sticky drag has been turned on.
Attributes:
_updating (bool): essentially keeps track of the event loop. To ensure
that recursion does not happen as this event filter is installed
on 3 widgets. This makes sure that a click only happens once.
"""
# preflight
if not hasattr(obj, '_invisible_widget_data'): return False
# interface
hide_widget = obj._invisible_widget_data['hide_widget']
parent_widget = obj._invisible_widget_data['parent']
activation_widget = obj._invisible_widget_data['activation_widget']
if event.type() == QEvent.MouseButtonPress:
# preflight
# ensure this is only run once per click
if self._updating is True: return False
# ensure that the user clicked on the right widget
if obj != activation_widget and hide_widget._hide_widget_filter_INVISIBLE is False:
return False
# toggle display flag
hide_widget._hide_widget_filter_INVISIBLE = not hide_widget._hide_widget_filter_INVISIBLE
# todo something here?
# print("toggly joe? %s"%obj)
# hide
if hide_widget._hide_widget_filter_INVISIBLE is True:
if self._updating is False:
if obj == activation_widget:
self._updating = True
region = QRegion(parent_widget.frameGeometry())
hide_widget.setMask(region)
# show
else:
if self._updating is False:
self._updating = True
width = hide_widget.width()
height = hide_widget.height()
region = QRegion(0, 0, width, height)
hide_widget.setMask(QRegion())
if event.type() == QEvent.MouseButtonRelease:
self._updating = False
return QWidget.eventFilter(self, obj, event, *args, **kwargs)
def fillPixmap(self, widget, pixmap, offset=None):
"""
Fill a pixmap with the content of a widget
In Qt >= 5.0 `QPixmap.fill()` is a nop, in Qt 4.x it is buggy
for backgrounds with gradients. Thus `fillPixmap()` offers
an alternative implementation.
:param QWidget widget: Widget
:param QPixmap pixmap: Pixmap to be filled
:param QPoint offset: Offset
.. seealso::
:py:meth:`QPixmap.fill()`
"""
if offset is None:
offset = QPoint()
rect = QRect(offset, pixmap.size())
painter = QPainter(pixmap)
painter.translate(-offset)
autoFillBrush = widget.palette().brush(widget.backgroundRole())
if not (widget.autoFillBackground() and autoFillBrush.isOpaque()):
bg = widget.palette().brush(QPalette.Window)
qwtFillRect(widget, painter, rect, bg)
if widget.autoFillBackground():
qwtFillRect(widget, painter, rect, autoFillBrush)
if widget.testAttribute(Qt.WA_StyledBackground):
painter.setClipRegion(QRegion(rect))
opt = QStyleOption()
opt.initFrom(widget)
widget.style().drawPrimitive(QStyle.PE_Widget, opt, painter,
widget)
def __init__(self):
self.attributes = 0
self.hasClipping = False
self.seriesItem = None # QwtPlotSeriesItem
self.clipRegion = QRegion()
self.painter = QPainter()
self.from_ = None
self.to = None
def grab_no_background(self) -> QPixmap:
"""Grab function without background."""
image = QImage(self.size(), QImage.Format_ARGB32_Premultiplied)
image.fill(Qt.transparent)
self.switch_grab()
self.painter.begin(image)
self.render(self.painter, QPoint(), QRegion(), QWidget.DrawChildren)
self.switch_grab()
return QPixmap.fromImage(image)
def render(self):
rect = QRect(QPoint(), self.geometry().size())
self.m_backingStore.resize(rect.size())
self.m_backingStore.beginPaint(QRegion(rect))
device = self.m_backingStore.paintDevice()
p = QPainter(device)
p.drawImage(0, 0, self.m_image)
font = QFont()
font.setPixelSize(32)
p.setFont(font)
p.drawText(rect, 0, self.m_text)
self.m_backingStore.endPaint()
self.m_backingStore.flush(QRegion(rect))
def update_canvas(self):
""" """
w, h = self.parent.size().width(), self.parent.size().height()
self.path_full = QPainterPath()
self.path_subtract = QPainterPath()
self.path_decoration = QPainterPath()
self.region_mask = QRegion(0, 0, w, h)
self.path_full.addRect(0, 0, w, h)
# Add the path
if self.widgets is not None:
for widget in self.widgets:
temp_path = QPainterPath()
# if widget is not found... find more general way to handle
if widget is not None:
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region = QRegion(x, y, width, height)
if self.interaction_on:
self.region_mask = self.region_mask.subtracted(temp_region)
self.path_subtract = self.path_subtract.united(temp_path)
self.path_current = self.path_full.subtracted(self.path_subtract)
else:
self.path_current = self.path_full
if self.decoration is not None:
for widget in self.decoration:
temp_path = QPainterPath()
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region_1 = QRegion(x - 1, y - 1, width + 2, height + 2)
temp_region_2 = QRegion(x + 1, y + 1, width - 2, height - 2)
temp_region = temp_region_1.subtracted(temp_region_2)
if self.interaction_on:
self.region_mask = self.region_mask.united(temp_region)
self.path_decoration = self.path_decoration.united(temp_path)
else:
self.path_decoration.addRect(0, 0, 0, 0)
# Add a decoration stroke around widget
self.setMask(self.region_mask)
self.update()
self.repaint()
class FadingCanvas(FadingDialog):
"""The black semi transparent canvas that covers the application"""
def __init__(self,
parent,
opacity,
duration,
easing_curve,
color,
tour=None):
"""Create a black semi transparent canvas that covers the app."""
super(FadingCanvas, self).__init__(parent, opacity, duration,
easing_curve)
self.parent = parent
self.tour = tour
self.color = color # Canvas color
self.color_decoration = Qt.red # Decoration color
self.stroke_decoration = 2 # width in pixels for decoration
self.region_mask = None
self.region_subtract = None
self.region_decoration = None
self.widgets = None # The widget to uncover
self.decoration = None # The widget to draw decoration
self.interaction_on = False
self.path_current = None
self.path_subtract = None
self.path_full = None
self.path_decoration = None
# widget setup
self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint)
self.setAttribute(Qt.WA_TranslucentBackground)
self.setAttribute(Qt.WA_TransparentForMouseEvents)
self.setModal(False)
self.setFocusPolicy(Qt.NoFocus)
self.set_funcs_before_fade_in([self.update_canvas])
self.set_funcs_after_fade_out([
lambda: self.update_widgets(None),
lambda: self.update_decoration(None)
])
def set_interaction(self, value):
""" """
self.interaction_on = value
def update_canvas(self):
""" """
w, h = self.parent.size().width(), self.parent.size().height()
self.path_full = QPainterPath()
self.path_subtract = QPainterPath()
self.path_decoration = QPainterPath()
self.region_mask = QRegion(0, 0, w, h)
self.path_full.addRect(0, 0, w, h)
# Add the path
if self.widgets is not None:
for widget in self.widgets:
temp_path = QPainterPath()
# if widget is not found... find more general way to handle
if widget is not None:
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region = QRegion(x, y, width, height)
if self.interaction_on:
self.region_mask = self.region_mask.subtracted(temp_region)
self.path_subtract = self.path_subtract.united(temp_path)
self.path_current = self.path_full.subtracted(self.path_subtract)
else:
self.path_current = self.path_full
if self.decoration is not None:
for widget in self.decoration:
temp_path = QPainterPath()
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region_1 = QRegion(x - 1, y - 1, width + 2, height + 2)
temp_region_2 = QRegion(x + 1, y + 1, width - 2, height - 2)
temp_region = temp_region_1.subtracted(temp_region_2)
if self.interaction_on:
self.region_mask = self.region_mask.united(temp_region)
self.path_decoration = self.path_decoration.united(temp_path)
else:
self.path_decoration.addRect(0, 0, 0, 0)
# Add a decoration stroke around widget
self.setMask(self.region_mask)
self.update()
self.repaint()
def update_widgets(self, widgets):
""" """
self.widgets = widgets
def update_decoration(self, widgets):
""" """
self.decoration = widgets
def paintEvent(self, event):
"""Override Qt method"""
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
# Decoration
painter.fillPath(self.path_current, QBrush(self.color))
painter.strokePath(self.path_decoration,
QPen(self.color_decoration, self.stroke_decoration))
# decoration_fill = QColor(self.color_decoration)
# decoration_fill.setAlphaF(0.25)
# painter.fillPath(self.path_decoration, decoration_fill)
def reject(self):
"""Override Qt method"""
if not self.is_fade_running():
key = Qt.Key_Escape
self.key_pressed = key
self.sig_key_pressed.emit()
def mousePressEvent(self, event):
"""Override Qt method"""
pass
def focusInEvent(self, event):
"""Override Qt method."""
# To be used so tips do not appear outside spyder
if self.hasFocus():
self.tour.gain_focus()
def focusOutEvent(self, event):
"""Override Qt method."""
# To be used so tips do not appear outside spyder
if self.tour.step_current != 0:
self.tour.lost_focus()
def update_canvas(self):
""" """
w, h = self.parent.size().width(), self.parent.size().height()
self.path_full = QPainterPath()
self.path_subtract = QPainterPath()
self.path_decoration = QPainterPath()
self.region_mask = QRegion(0, 0, w, h)
self.path_full.addRect(0, 0, w, h)
# Add the path
if self.widgets is not None:
for widget in self.widgets:
temp_path = QPainterPath()
# if widget is not found... find more general way to handle
if widget is not None:
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region = QRegion(x, y, width, height)
if self.interaction_on:
self.region_mask = self.region_mask.subtracted(temp_region)
self.path_subtract = self.path_subtract.united(temp_path)
self.path_current = self.path_full.subtracted(self.path_subtract)
else:
self.path_current = self.path_full
if self.decoration is not None:
for widget in self.decoration:
temp_path = QPainterPath()
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region_1 = QRegion(x-1, y-1, width+2, height+2)
temp_region_2 = QRegion(x+1, y+1, width-2, height-2)
temp_region = temp_region_1.subtracted(temp_region_2)
if self.interaction_on:
self.region_mask = self.region_mask.united(temp_region)
self.path_decoration = self.path_decoration.united(temp_path)
else:
self.path_decoration.addRect(0, 0, 0, 0)
# Add a decoration stroke around widget
self.setMask(self.region_mask)
self.update()
self.repaint()
class FadingCanvas(FadingDialog):
"""The black semi transparent canvas that covers the application"""
def __init__(self, parent, opacity, duration, easing_curve, color,
tour=None):
"""Create a black semi transparent canvas that covers the app."""
super(FadingCanvas, self).__init__(parent, opacity, duration,
easing_curve)
self.parent = parent
self.tour = tour
self.color = color # Canvas color
self.color_decoration = Qt.red # Decoration color
self.stroke_decoration = 2 # width in pixels for decoration
self.region_mask = None
self.region_subtract = None
self.region_decoration = None
self.widgets = None # The widget to uncover
self.decoration = None # The widget to draw decoration
self.interaction_on = False
self.path_current = None
self.path_subtract = None
self.path_full = None
self.path_decoration = None
# widget setup
self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint)
self.setAttribute(Qt.WA_TranslucentBackground)
self.setAttribute(Qt.WA_TransparentForMouseEvents)
self.setModal(False)
self.setFocusPolicy(Qt.NoFocus)
self.set_funcs_before_fade_in([self.update_canvas])
self.set_funcs_after_fade_out([lambda: self.update_widgets(None),
lambda: self.update_decoration(None)])
def set_interaction(self, value):
""" """
self.interaction_on = value
def update_canvas(self):
""" """
w, h = self.parent.size().width(), self.parent.size().height()
self.path_full = QPainterPath()
self.path_subtract = QPainterPath()
self.path_decoration = QPainterPath()
self.region_mask = QRegion(0, 0, w, h)
self.path_full.addRect(0, 0, w, h)
# Add the path
if self.widgets is not None:
for widget in self.widgets:
temp_path = QPainterPath()
# if widget is not found... find more general way to handle
if widget is not None:
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region = QRegion(x, y, width, height)
if self.interaction_on:
self.region_mask = self.region_mask.subtracted(temp_region)
self.path_subtract = self.path_subtract.united(temp_path)
self.path_current = self.path_full.subtracted(self.path_subtract)
else:
self.path_current = self.path_full
if self.decoration is not None:
for widget in self.decoration:
temp_path = QPainterPath()
widget.raise_()
widget.show()
geo = widget.frameGeometry()
width, height = geo.width(), geo.height()
point = widget.mapTo(self.parent, QPoint(0, 0))
x, y = point.x(), point.y()
temp_path.addRect(QRectF(x, y, width, height))
temp_region_1 = QRegion(x-1, y-1, width+2, height+2)
temp_region_2 = QRegion(x+1, y+1, width-2, height-2)
temp_region = temp_region_1.subtracted(temp_region_2)
if self.interaction_on:
self.region_mask = self.region_mask.united(temp_region)
self.path_decoration = self.path_decoration.united(temp_path)
else:
self.path_decoration.addRect(0, 0, 0, 0)
# Add a decoration stroke around widget
self.setMask(self.region_mask)
self.update()
self.repaint()
def update_widgets(self, widgets):
""" """
self.widgets = widgets
def update_decoration(self, widgets):
""" """
self.decoration = widgets
def paintEvent(self, event):
"""Override Qt method"""
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
# Decoration
painter.fillPath(self.path_current, QBrush(self.color))
painter.strokePath(self.path_decoration, QPen(self.color_decoration,
self.stroke_decoration))
# decoration_fill = QColor(self.color_decoration)
# decoration_fill.setAlphaF(0.25)
# painter.fillPath(self.path_decoration, decoration_fill)
def reject(self):
"""Override Qt method"""
if not self.is_fade_running():
key = Qt.Key_Escape
self.key_pressed = key
self.sig_key_pressed.emit()
def mousePressEvent(self, event):
"""Override Qt method"""
pass
def focusInEvent(self, event):
"""Override Qt method."""
# To be used so tips do not appear outside spyder
if self.hasFocus():
self.tour.gain_focus()
def focusOutEvent(self, event):
"""Override Qt method."""
# To be used so tips do not appear outside spyder
if self.tour.step_current != 0:
self.tour.lost_focus()
def drawSeries(self, seriesItem, from_, to):
"""
Draw a set of points of a seriesItem.
When observing a measurement while it is running, new points have
to be added to an existing seriesItem. drawSeries() can be used to
display them avoiding a complete redraw of the canvas.
Setting `plot().canvas().setAttribute(Qt.WA_PaintOutsidePaintEvent, True)`
will result in faster painting, if the paint engine of the canvas widget
supports this feature.
:param qwt.plot_series.QwtPlotSeriesItem seriesItem: Item to be painted
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the series will be painted to its last point.
"""
if seriesItem is None or seriesItem.plot() is None:
return
canvas = seriesItem.plot().canvas()
canvasRect = canvas.contentsRect()
plotCanvas = canvas # XXX: cast to QwtPlotCanvas
if plotCanvas and qwtHasBackingStore(plotCanvas):
painter = QPainter(plotCanvas.backingStore(
)) # XXX: cast plotCanvas.backingStore() to QPixmap
if self.__data.hasClipping:
painter.setClipRegion(self.__data.clipRegion)
qwtRenderItem(painter, canvasRect, seriesItem, from_, to)
painter.end()
if self.testAttribute(self.FullRepaint):
plotCanvas.repaint()
return
immediatePaint = True
if not canvas.testAttribute(Qt.WA_WState_InPaintEvent):
if QT_MAJOR_VERSION >= 5 or not canvas.testAttribute(
Qt.WA_PaintOutsidePaintEvent):
immediatePaint = False
if immediatePaint:
if not self.__data.painter.isActive():
self.reset()
self.__data.painter.begin(canvas)
canvas.installEventFilter(self)
if self.__data.hasClipping:
self.__data.painter.setClipRegion(
QRegion(canvasRect) & self.__data.clipRegion)
elif not self.__data.painter.hasClipping():
self.__data.painter.setClipRect(canvasRect)
qwtRenderItem(self.__data.painter, canvasRect, seriesItem, from_,
to)
if self.__data.attributes & self.AtomicPainter:
self.reset()
elif self.__data.hasClipping:
self.__data.painter.setClipping(False)
else:
self.reset()
self.__data.seriesItem = seriesItem
self.__data.from_ = from_
self.__data.to = to
clipRegion = QRegion(canvasRect)
if self.__data.hasClipping:
clipRegion &= self.__data.clipRegion
canvas.installEventFilter(self)
canvas.repaint(clipRegion)
canvas.removeEventFilter(self)
self.__data.seriesItem = None
def __init__(self):
self.pathlist = []
self.rectList = []
self.clipRegion = QRegion()
def visualRegionForSelection(self, _selection):
"""visualRegionForSelection is a pure virtual member function of QAbstractItemView"""
return QRegion()
def activate(self, plot, plotRect, options=0x00):
"""
Recalculate the geometry of all components.
:param qwt.plot.QwtPlot plot: Plot to be layout
:param QRectF plotRect: Rectangle where to place the components
:param options: Layout options
"""
self.invalidate()
rect = QRectF(plotRect)
self.__data.layoutData.init(plot, rect)
if (not (options & self.IgnoreLegend) and plot.legend()
and not plot.legend().isEmpty()):
self.__data.legendRect = self.layoutLegend(options, rect)
region = QRegion(rect.toRect())
rect = region.subtracted(QRegion(
self.__data.legendRect.toRect())).boundingRect()
if self.__data.legendPos == QwtPlot.LeftLegend:
rect.setLeft(rect.left() + self.__data.spacing)
elif self.__data.legendPos == QwtPlot.RightLegend:
rect.setRight(rect.right() - self.__data.spacing)
elif self.__data.legendPos == QwtPlot.TopLegend:
rect.setTop(rect.top() + self.__data.spacing)
elif self.__data.legendPos == QwtPlot.BottomLegend:
rect.setBottom(rect.bottom() - self.__data.spacing)
# +---+-----------+---+
# | Title |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# +---+-----------+---+
# | | Axis | |
# +---+-----------+---+
# | Footer |
# +---+-----------+---+
# title, footer and axes include text labels. The height of each
# label depends on its line breaks, that depend on the width
# for the label. A line break in a horizontal text will reduce
# the available width for vertical texts and vice versa.
# expandLineBreaks finds the height/width for title, footer and axes
# including all line breaks.
dimTitle, dimFooter, dimAxes = self.expandLineBreaks(options, rect)
if dimTitle > 0:
self.__data.titleRect.setRect(rect.left(), rect.top(),
rect.width(), dimTitle)
rect.setTop(self.__data.titleRect.bottom() + self.__data.spacing)
if (self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled):
self.__data.titleRect.setX(rect.left() +
dimAxes[QwtPlot.yLeft])
self.__data.titleRect.setWidth(rect.width() -
dimAxes[QwtPlot.yLeft] -
dimAxes[QwtPlot.yRight])
if dimFooter > 0:
self.__data.footerRect.setRect(rect.left(),
rect.bottom() - dimFooter,
rect.width(), dimFooter)
rect.setBottom(self.__data.footerRect.top() - self.__data.spacing)
if (self.__data.layoutData.scale[QwtPlot.yLeft].isEnabled !=
self.__data.layoutData.scale[QwtPlot.yRight].isEnabled):
self.__data.footerRect.setX(rect.left() +
dimAxes[QwtPlot.yLeft])
self.__data.footerRect.setWidth(rect.width() -
dimAxes[QwtPlot.yLeft] -
dimAxes[QwtPlot.yRight])
self.__data.canvasRect.setRect(
rect.x() + dimAxes[QwtPlot.yLeft],
rect.y() + dimAxes[QwtPlot.xTop],
rect.width() - dimAxes[QwtPlot.yRight] - dimAxes[QwtPlot.yLeft],
rect.height() - dimAxes[QwtPlot.xBottom] - dimAxes[QwtPlot.xTop],
)
for axis in QwtPlot.AXES:
if dimAxes[axis]:
dim = dimAxes[axis]
scaleRect = self.__data.scaleRect[axis]
scaleRect.setRect(*self.__data.canvasRect.getRect())
if axis == QwtPlot.yLeft:
scaleRect.setX(self.__data.canvasRect.left() - dim)
scaleRect.setWidth(dim)
elif axis == QwtPlot.yRight:
scaleRect.setX(self.__data.canvasRect.right())
scaleRect.setWidth(dim)
elif axis == QwtPlot.xBottom:
scaleRect.setY(self.__data.canvasRect.bottom())
scaleRect.setHeight(dim)
elif axis == QwtPlot.xTop:
scaleRect.setY(self.__data.canvasRect.top() - dim)
scaleRect.setHeight(dim)
scaleRect = scaleRect.normalized()
# +---+-----------+---+
# | <- Axis -> |
# +-^-+-----------+-^-+
# | | | | | |
# | | | |
# | A | | A |
# | x | Canvas | x |
# | i | | i |
# | s | | s |
# | | | |
# | | | | | |
# +-V-+-----------+-V-+
# | <- Axis -> |
# +---+-----------+---+
# The ticks of the axes - not the labels above - should
# be aligned to the canvas. So we try to use the empty
# corners to extend the axes, so that the label texts
# left/right of the min/max ticks are moved into them.
self.alignScales(options, self.__data.canvasRect,
self.__data.scaleRect)
if not self.__data.legendRect.isEmpty():
self.__data.legendRect = self.alignLegend(self.__data.canvasRect,
self.__data.legendRect)
def get_pixmap(self) -> QPixmap:
pixmap = QPixmap(self.size())
self.render(pixmap, QPoint(), QRegion(self.rect()))
return pixmap
