def __updateGeometry(self):
# type: () -> None
"""
Update the shadow geometry to fit the widget's changed
geometry.
"""
assert self.__widget is not None
widget = self.__widget
parent = self.__widgetParent
radius = self.radius_
offset = self.__offset
pos = widget.pos()
if parent is not None and parent != widget.parentWidget():
pos = widget.parentWidget().mapTo(parent, pos)
geom = QRect(pos, widget.size())
geom = geom.adjusted(-radius, -radius, radius, radius)
geom = geom.translated(offset)
if geom != self.geometry():
self.setGeometry(geom)
# Set the widget mask (punch a hole through to the `widget` instance.
rect = self.rect()
mask = QRegion(rect)
rect = rect.adjusted(radius, radius, -radius, -radius)
rect = rect.translated(-offset)
transparent = QRegion(rect)
mask = mask.subtracted(transparent)
self.setMask(mask)
def __updateGeometry(self):
"""
Update the shadow geometry to fit the widget's changed
geometry.
"""
widget = self.__widget
parent = self.__widgetParent
radius = self.radius_
pos = widget.pos()
if parent != widget.parentWidget():
pos = widget.parentWidget().mapTo(parent, pos)
geom = QRect(pos, widget.size())
geom.adjust(-radius, -radius, radius, radius)
if geom != self.geometry():
self.setGeometry(geom)
# Set the widget mask (punch a hole through to the `widget` instance.
rect = self.rect()
mask = QRegion(rect)
transparent = QRegion(rect.adjusted(radius, radius, -radius, -radius))
mask = mask.subtracted(transparent)
self.setMask(mask)
def update_map(self):
"""Get current view box to calculate which tiles to draw."""
[min_x, max_x], [min_y, max_y] = self.view_box.viewRange()
new_zoom = self.view_box.get_zoom()
self.zoom_changed = self.tz != new_zoom
self.tz = new_zoom
# flip y to calculate edge tiles
tile_min_x, tile_max_y = norm2tile(min_x, 1 - min_y, self.tz)
tile_max_x, tile_min_y = norm2tile(max_x, 1 - max_y, self.tz)
# round them to get edge tiles x, y
tile_min_x = max(int(np.floor(tile_min_x)), 0)
tile_min_y = max(int(np.floor(tile_min_y)), 0)
tile_max_x = min(int(np.ceil(tile_max_x)), 2**self.tz)
tile_max_y = min(int(np.ceil(tile_max_y)), 2**self.tz)
self.ts = QRect(tile_min_x, tile_min_y, tile_max_x - tile_min_x,
tile_max_y - tile_min_y)
# transform rounded tile coordinates back
min_edge_x, min_edge_y = tile2norm(tile_min_x, tile_min_y, self.tz)
max_edge_x, max_edge_y = tile2norm(tile_max_x, tile_max_y, self.tz)
# flip y back to transform map
min_edge_y, max_edge_y = 1 - min_edge_y, 1 - max_edge_y
# rectangle where to put the map into
self.ts_norm = QRectF(min_edge_x, min_edge_y, max_edge_x - min_edge_x,
max_edge_y - min_edge_y)
self._map_z_shift()
self._load_new_map()
def __init__(self):
self.tile_provider = TILE_PROVIDERS[DEFAULT_TILE_PROVIDER]
self.tile_attribution = AttributionItem(
parent=self.plot_widget.getViewBox())
self.tile_attribution.setHtml(self.tile_provider.attribution)
self.mem_cache = {}
self.map = None # type: Optional[Image.Image]
# we use a background map so transitions between zoom levels looks nicer
self.b_map_item = None
self.map_item = None
self.__new_map_items()
self.ts = QRect(0, 0, 1, 1)
self.ts_norm = QRect(0, 0, 1, 1)
self.tz = 1
self.zoom_changed = False
self.loader = ImageLoader(self)
self.futures = []
self.view_box.setAspectLocked(lock=True, ratio=1)
self.view_box.sigRangeChangedManually.connect(self.update_map)
self.view_box.set_tile_provider(self.tile_provider)
def decorate_welcome_icon(icon, background_color):
"""Return a `QIcon` with a circle shaped background.
"""
welcome_icon = QIcon()
sizes = [32, 48, 64, 80, 128, 256]
background_color = NAMED_COLORS.get(background_color, background_color)
background_color = QColor(background_color)
grad = radial_gradient(background_color)
for size in sizes:
icon_size = QSize(5 * size / 8, 5 * size / 8)
icon_rect = QRect(QPoint(0, 0), icon_size)
pixmap = QPixmap(size, size)
pixmap.fill(Qt.transparent)
p = QPainter(pixmap)
p.setRenderHint(QPainter.Antialiasing, True)
p.setBrush(QBrush(grad))
p.setPen(Qt.NoPen)
ellipse_rect = QRect(0, 0, size, size)
p.drawEllipse(ellipse_rect)
icon_rect.moveCenter(ellipse_rect.center())
icon.paint(p, icon_rect, Qt.AlignCenter, )
p.end()
welcome_icon.addPixmap(pixmap)
return welcome_icon
def __updateGeometry(self):
"""
Update the shadow geometry to fit the widget's changed
geometry.
"""
widget = self.__widget
parent = self.__widgetParent
radius = self.radius_
pos = widget.pos()
if parent != widget.parentWidget():
pos = widget.parentWidget().mapTo(parent, pos)
geom = QRect(pos, widget.size())
geom.adjust(-radius, -radius, radius, radius)
if geom != self.geometry():
self.setGeometry(geom)
# Set the widget mask (punch a hole through to the `widget` instance.
rect = self.rect()
mask = QRegion(rect)
transparent = QRegion(rect.adjusted(radius, radius, -radius, -radius))
mask = mask.subtracted(transparent)
self.setMask(mask)
def __setControlAreaVisible(self, visible):
# type: (bool) -> None
if self.__splitter is None or self.__splitter.count() < 2:
return
self.controlAreaVisible = visible
splitter = self.__splitter # type: QSplitter
w = splitter.widget(0)
# Set minimum width to 1 (overrides minimumSizeHint) when control area
# is not visible to allow the main area to shrink further. Reset the
# minimum width with a 0 if control area is visible.
w.setMinimumWidth(int(not visible))
sizes = splitter.sizes()
current_size = sizes[0]
if bool(current_size) == visible:
return
current_width = w.width()
geom = self.geometry()
frame = self.frameGeometry()
framemargins = QMargins(
frame.left() - geom.left(),
frame.top() - geom.top(),
frame.right() - geom.right(),
frame.bottom() - geom.bottom()
)
splitter.setSizes([int(visible), QWIDGETSIZE_MAX])
if not self.isWindow() or \
self.windowState() not in [Qt.WindowNoState, Qt.WindowActive]:
# not a window or not in state where we can move move/resize
return
# force immediate resize recalculation
splitter.refresh()
self.layout().invalidate()
self.layout().activate()
if visible:
# move left and expand by the exposing widget's width
diffx = -w.width()
diffw = w.width()
else:
# move right and shrink by the collapsing width
diffx = current_width
diffw = -current_width
newgeom = QRect(
geom.x() + diffx, geom.y(), geom.width() + diffw, geom.height()
)
# bound/move by available geometry
bounds = QApplication.desktop().availableGeometry(self)
bounds = bounds.adjusted(
framemargins.left(), framemargins.top(),
-framemargins.right(), -framemargins.bottom()
)
newsize = newgeom.size().boundedTo(bounds.size())
newgeom = QRect(newgeom.topLeft(), newsize)
newgeom.moveLeft(max(newgeom.left(), bounds.left()))
newgeom.moveRight(min(newgeom.right(), bounds.right()))
self.setGeometry(newgeom)
def setTextRect(self, rect):
# type: (QRect) -> None
"""
Set the rectangle (:class:`QRect`) in which to show the message text.
"""
if self.__textRect != rect:
self.__textRect = QRect(rect)
self.update()
def _subControlRect(self, subcontrol):
if subcontrol == QStyle.SC_SliderGroove:
return self.rect()
if subcontrol == QStyle.SC_SliderHandle:
if self.orientation() == Qt.Horizontal:
return QRect(-self._HANDLE_WIDTH / 2, 0, self._HANDLE_WIDTH, self.rect().height())
else:
return QRect(0, -self._HANDLE_WIDTH / 2, self.rect().width(), self._HANDLE_WIDTH)
def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton and self.__dragging:
r1, c1 = self._cellAt(event.buttonDownPos(Qt.LeftButton))
r2, c2 = self._cellCloseTo(event.pos())
selrange = QRect(c1, r1, 1, 1).united(QRect(c2, r2, 1, 1))
self.__elastic_band_select(selrange, self.Select)
super().mouseMoveEvent(event)
event.accept()
def addWidget(self, w):
QStackedLayout.addWidget(self, w)
rect = self.__rect
hint = w.sizeHint()
geom = QRect(rect)
size = clipMinMax(rect.size(), w.minimumSize(), w.maximumSize())
size = fixSizePolicy(size, hint, w.sizePolicy())
geom.setSize(size)
if geom != w.geometry():
w.setGeometry(geom)
def setGeometry(self, rect):
QStackedLayout.setGeometry(self, rect)
for i in range(self.count()):
w = self.widget(i)
hint = w.sizeHint()
geom = QRect(rect)
size = clipMinMax(rect.size(), w.minimumSize(), w.maximumSize())
size = fixSizePolicy(size, hint, w.sizePolicy())
geom.setSize(size)
if geom != w.geometry():
w.setGeometry(geom)
def setGeometry(self, rect):
QStackedLayout.setGeometry(self, rect)
for i in range(self.count()):
w = self.widget(i)
hint = w.sizeHint()
geom = QRect(rect)
size = clipMinMax(rect.size(), w.minimumSize(), w.maximumSize())
size = fixSizePolicy(size, hint, w.sizePolicy())
geom.setSize(size)
if geom != w.geometry():
w.setGeometry(geom)
def fitRect(rect, targetrect):
size = rect.size().boundedTo(targetgeom.size())
newrect = QRect(rect.topLeft(), size)
dx, dy = 0, 0
if newrect.left() < targetrect.left():
dx = targetrect.left() - newrect.left()
if newrect.top() < targetrect.top():
dy = targetrect.top() - newrect.top()
if newrect.right() > targetrect.right():
dx = targetrect.right() - newrect.right()
if newrect.bottom() > targetrect.bottom():
dy = targetrect.bottom() - newrect.bottom()
return newrect.translated(dx, dy)
def paintEvent(self, event):
# based on
# https://github.com/qt/qtbase/blob/f40dbe0d0b54ce83d2168e82905cf4f75059a841/src/widgets/widgets/qslider.cpp#L315
# https://github.com/enthought/traitsui/blob/master/traitsui/qt4/extra/range_slider.py
painter = QStylePainter(self)
minpos = self._min_position
maxpos = self._max_position
# Draw the groove
opt = QStyleOptionSlider()
self.initStyleOption(opt)
# Draw empty grove
opt.sliderPosition = opt.minimum
opt.subControls = QStyle.SC_SliderGroove
if self.tickPosition() != self.NoTicks:
opt.subControls |= QStyle.SC_SliderTickmarks
painter.drawComplexControl(QStyle.CC_Slider, opt)
# Draw the highlighted part on top
# Qt4.8 and Qt5.3 draw the highlighted groove in a weird way because they
# transpose opt.rect. Qt5.7 works fine.
if QT_VERSION_STR >= '5.7.0':
opt.subControls = QStyle.SC_SliderGroove
opt.sliderPosition = opt.maximum
if self.orientation() == Qt.Horizontal:
_w = opt.rect.width() / opt.maximum
x = round(_w * minpos)
w = round(_w * (maxpos - minpos))
opt.rect = QRect(x, 0, w, opt.rect.height())
else:
_h = opt.rect.height() / opt.maximum
y = round(_h * minpos)
h = round(_h * (maxpos - minpos))
opt.rect = QRect(0, y, opt.rect.width(), h)
painter.drawComplexControl(QStyle.CC_Slider, opt)
# Draw the handles
for i, position in enumerate((minpos, maxpos)):
opt = QStyleOptionSlider()
self.initStyleOption(opt)
opt.subControls = QStyle.SC_SliderHandle
if self.__pressed_control and (self.__active_slider == i or
self.__active_slider < 0):
opt.activeSubControls = self.__pressed_control
opt.state |= QStyle.State_Sunken
else:
opt.activeSubControls = self.__hovered_control
opt.sliderPosition = position
opt.sliderValue = position
painter.drawComplexControl(QStyle.CC_Slider, opt)
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
r, c = self._cellAt(event.pos())
if r != -1 and c != -1:
# Clear existing selection
# TODO: Fix extended selection.
self.__select(QRect(), self.Clear)
selrange = QRect(c, r, 1, 1)
self.__elastic_band_select(selrange, self.Select | self.Clear)
elif event.button() == Qt.RightButton:
self.__select(QRect(), self.Clear)
super().mousePressEvent(event)
event.accept()
def decorate_welcome_icon(icon, background_color):
"""Return a `QIcon` with a circle shaped background.
"""
welcome_icon = QIcon()
sizes = [32, 48, 64, 80]
background_color = NAMED_COLORS.get(background_color, background_color)
background_color = QColor(background_color)
grad = radial_gradient(background_color)
for size in sizes:
icon_pixmap = icon.pixmap(5 * size / 8, 5 * size / 8)
icon_size = icon_pixmap.size()
icon_rect = QRect(QPoint(0, 0), icon_size)
pixmap = QPixmap(size, size)
pixmap.fill(QColor(0, 0, 0, 0))
p = QPainter(pixmap)
p.setRenderHint(QPainter.Antialiasing, True)
p.setBrush(QBrush(grad))
p.setPen(Qt.NoPen)
ellipse_rect = QRect(0, 0, size, size)
p.drawEllipse(ellipse_rect)
icon_rect.moveCenter(ellipse_rect.center())
p.drawPixmap(icon_rect.topLeft(), icon_pixmap)
p.end()
welcome_icon.addPixmap(pixmap)
return welcome_icon
def test_popup_util(self):
geom = QRect(10, 10, 100, 400)
screen = QRect(0, 0, 600, 600)
g1 = combobox.dropdown_popup_geometry(geom, QRect(200, 100, 100, 20),
screen)
self.assertEqual(g1, QRect(200, 120, 100, 400))
g2 = combobox.dropdown_popup_geometry(geom, QRect(-10, 0, 100, 20),
screen)
self.assertEqual(g2, QRect(0, 20, 100, 400))
g3 = combobox.dropdown_popup_geometry(geom, QRect(590, 0, 100, 20),
screen)
self.assertEqual(g3, QRect(600 - 100, 20, 100, 400))
g4 = combobox.dropdown_popup_geometry(geom, QRect(0, 500, 100, 20),
screen)
self.assertEqual(g4, QRect(0, 500 - 400, 100, 400))
def __updateWindowGeometry(self):
if not self.isWindow() or self.__hasExplicitSize:
return
def framemargins(widget):
frame, geom = widget.frameGeometry(), widget.geometry()
return QMargins(geom.left() - frame.left(),
geom.top() - frame.top(),
geom.right() - frame.right(),
geom.bottom() - frame.bottom())
def fitRect(rect, targetrect):
size = rect.size().boundedTo(targetgeom.size())
newrect = QRect(rect.topLeft(), size)
dx, dy = 0, 0
if newrect.left() < targetrect.left():
dx = targetrect.left() - newrect.left()
if newrect.top() < targetrect.top():
dy = targetrect.top() - newrect.top()
if newrect.right() > targetrect.right():
dx = targetrect.right() - newrect.right()
if newrect.bottom() > targetrect.bottom():
dy = targetrect.bottom() - newrect.bottom()
return newrect.translated(dx, dy)
margins = framemargins(self)
minsize = QSize(120, 120)
pixsize = self.__pixmap.size()
available = QApplication.desktop().availableGeometry(self)
available = available.adjusted(margins.left(), margins.top(),
-margins.right(), -margins.bottom())
# extra adjustment so the preview does not cover the whole desktop
available = available.adjusted(10, 10, -10, -10)
targetsize = pixsize.boundedTo(available.size()).expandedTo(minsize)
pixsize.scale(targetsize, Qt.KeepAspectRatio)
if not self.testAttribute(Qt.WA_WState_Created) or \
self.testAttribute(Qt.WA_WState_Hidden):
center = available.center()
else:
center = self.geometry().center()
targetgeom = QRect(QPoint(0, 0), pixsize)
targetgeom.moveCenter(center)
if not available.contains(targetgeom):
targetgeom = fitRect(targetgeom, available)
self.__inUpdateWindowGeometry = True
self.setGeometry(targetgeom)
self.__inUpdateWindowGeometry = False
def __updateWindowGeometry(self):
if not self.isWindow() or self.__hasExplicitSize:
return
def framemargins(widget):
frame, geom = widget.frameGeometry(), widget.geometry()
return QMargins(geom.left() - frame.left(),
geom.top() - frame.top(),
geom.right() - frame.right(),
geom.bottom() - frame.bottom())
def fitRect(rect, targetrect):
size = rect.size().boundedTo(targetgeom.size())
newrect = QRect(rect.topLeft(), size)
dx, dy = 0, 0
if newrect.left() < targetrect.left():
dx = targetrect.left() - newrect.left()
if newrect.top() < targetrect.top():
dy = targetrect.top() - newrect.top()
if newrect.right() > targetrect.right():
dx = targetrect.right() - newrect.right()
if newrect.bottom() > targetrect.bottom():
dy = targetrect.bottom() - newrect.bottom()
return newrect.translated(dx, dy)
margins = framemargins(self)
minsize = QSize(120, 120)
pixsize = self.__pixmap.size()
available = QApplication.desktop().availableGeometry(self)
available = available.adjusted(margins.left(), margins.top(),
-margins.right(), -margins.bottom())
# extra adjustment so the preview does not cover the whole desktop
available = available.adjusted(10, 10, -10, -10)
targetsize = pixsize.boundedTo(available.size()).expandedTo(minsize)
pixsize.scale(targetsize, Qt.KeepAspectRatio)
if not self.testAttribute(Qt.WA_WState_Created) or \
self.testAttribute(Qt.WA_WState_Hidden):
center = available.center()
else:
center = self.geometry().center()
targetgeom = QRect(QPoint(0, 0), pixsize)
targetgeom.moveCenter(center)
if not available.contains(targetgeom):
targetgeom = fitRect(targetgeom, available)
self.__inUpdateWindowGeometry = True
self.setGeometry(targetgeom)
self.__inUpdateWindowGeometry = False
def __shadowPixmapForDpr(self, dpr=1.0):
# type: (float) -> QPixmap
"""
Return a shadow pixmap rendered in `dpr` device pixel ratio.
"""
offset = self.offset()
radius = self.radius()
color = self.color()
fill_color = self.palette().color(QPalette.Window)
rect_size = QSize(int(50 * dpr), int(50 * dpr))
left = top = right = bottom = int(radius * dpr)
# Size of the pixmap.
pixmap_size = QSize(rect_size.width() + left + right,
rect_size.height() + top + bottom)
shadow_rect = QRect(QPoint(left, top) - offset * dpr, rect_size)
pixmap = QPixmap(pixmap_size)
pixmap.fill(Qt.transparent)
pixmap = render_drop_shadow_frame(
pixmap,
QRectF(shadow_rect),
shadow_color=color,
offset=QPointF(offset * dpr),
radius=radius * dpr,
rect_fill_color=fill_color
)
pixmap.setDevicePixelRatio(dpr)
return pixmap
def paint(self, painter, option, index):
if option.widget is not None:
style = option.widget.style()
else:
style = QApplication.instance().style()
style.drawPrimitive(QStyle.PE_PanelItemViewRow, option, painter,
option.widget)
style.drawPrimitive(QStyle.PE_PanelItemViewItem, option, painter,
option.widget)
rect = option.rect
val = index.data(Qt.DisplayRole)
if isinstance(val, float):
if np.isfinite(val):
minv, maxv = self.scale
val = (val - minv) / (maxv - minv)
rect = rect.adjusted(1, 1,
-int(rect.width() * (1.0 - val)) - 2, -2)
else:
rect = QRect()
painter.save()
if option.state & QStyle.State_Selected:
painter.setOpacity(0.75)
painter.setBrush(self.brush)
painter.drawRect(rect)
painter.restore()
def test_splashscreen(self):
splash = pkg_resources.resource_filename(
config.__package__, "icons/orange-canvas-core-splash.svg"
)
w = SplashScreen()
w.setPixmap(QPixmap(splash))
w.setTextRect(QRect(100, 100, 400, 50))
w.show()
def advance_time():
now = datetime.now()
time = now.strftime("%c : %f")
i = now.second % 3
if i == 2:
w.setTextFormat(Qt.RichText)
time = "<i>" + time + "</i>"
else:
w.setTextFormat(Qt.PlainText)
w.showMessage(time, alignment=Qt.AlignCenter)
rect = QRect(100, 100 + i * 20, 400, 50)
w.setTextRect(rect)
self.assertEqual(w.textRect(), rect)
timer = QTimer(w, interval=1)
timer.timeout.connect(advance_time)
timer.start()
self.app.exec_()
def paintEvent(self, event):
# type: (QPaintEvent) -> None
if self.__flat:
opt = QStyleOptionToolButton()
self.initStyleOption(opt)
p = QStylePainter(self)
p.drawControl(QStyle.CE_ToolButtonLabel, opt)
p.end()
else:
super().paintEvent(event)
# paint shadow
shadow = innerShadowPixmap(self.__shadowColor,
self.size(),
self.__shadowPosition,
length=self.__shadowLength)
p = QPainter(self)
rect = self.rect()
targetRect = QRect(rect.left() + 1,
rect.top() + 1,
rect.width() - 2,
rect.height() - 2)
p.drawPixmap(targetRect, shadow, shadow.rect())
p.end()
def __testaxis(self, event):
viewbox = self.parent()
widget = event.widget()
assert widget is not None
view = widget.parent()
assert isinstance(view, QGraphicsView)
pos = view.mapFromGlobal(event.screenPos())
hitarea = view.mapToScene(QRect(pos - QPoint(2, 2), QSize(4, 4)))
hitarea = viewbox.mapFromScene(hitarea)
hitarea = viewbox.mapToView(hitarea).boundingRect()
center = hitarea.center()
if center.x() < 0:
hitarea.moveCenter(QPointF(-center.x(), center.y()))
cx = self.selection[1][1].x()
cy = self.selection[1][1].y()
if hitarea.contains(QPointF(cx, cy)):
axes = Qt.Horizontal | Qt.Vertical
elif hitarea.bottom() > cy > hitarea.top() and hitarea.left() > cx:
axes = Qt.Vertical
elif hitarea.left() < cx < hitarea.right() and hitarea.bottom() > cy:
axes = Qt.Horizontal
else:
axes = 0
return axes
def __updatePixmap(self):
"""
Update the cached shadow pixmap.
"""
rect_size = QSize(50, 50)
left = top = right = bottom = self.radius_
# Size of the pixmap.
pixmap_size = QSize(rect_size.width() + left + right,
rect_size.height() + top + bottom)
shadow_rect = QRect(QPoint(left, top), rect_size)
pixmap = QPixmap(pixmap_size)
pixmap.fill(QColor(0, 0, 0, 0))
rect_fill_color = self.palette().color(QPalette.Window)
pixmap = render_drop_shadow_frame(
pixmap,
QRectF(shadow_rect),
shadow_color=self.color_,
offset=QPointF(0, 0),
radius=self.radius_,
rect_fill_color=rect_fill_color,
)
self.__shadowPixmap = pixmap
self.update()
def splash_screen():
splash_n = random.randint(1, 3)
path = pkg_resources.resource_filename(
__name__, f"icons/orange-splash-screen-{splash_n:02}.png")
pm = QPixmap(path)
version = Config.ApplicationVersion
if version:
version_parsed = LooseVersion(version)
version_comp = version_parsed.version
version = ".".join(map(str, version_comp[:2]))
size = 13
font = QFont("Helvetica")
font.setPixelSize(size)
metrics = QFontMetrics(font)
br = metrics.boundingRect(version)
br.moveTopLeft(QPoint(171, 438))
p = QPainter(pm)
p.setRenderHint(QPainter.Antialiasing)
p.setRenderHint(QPainter.TextAntialiasing)
p.setFont(font)
p.setPen(QColor("#000000"))
p.drawText(br, Qt.AlignLeft, version)
p.end()
return pm, QRect(23, 24, 200, 20)
def paint(self, painter, option, index):
dist = self.distribution(index)
if dist is None or self.colors is None:
super().paint(painter, option, index)
return
if option.widget is not None:
style = option.widget.style()
else:
style = QApplication.style()
self.initStyleOption(option, index)
text = option.text
metrics = option.fontMetrics
margin = style.pixelMetric(QStyle.PM_FocusFrameHMargin, option,
option.widget) + 1
bottommargin = min(margin, 1)
rect = option.rect.adjusted(margin, margin, -margin, -bottommargin)
textrect = style.subElementRect(QStyle.SE_ItemViewItemText, option,
option.widget)
# Are the margins included in the subElementRect?? -> No!
textrect = textrect.adjusted(margin, margin, -margin, -bottommargin)
text = option.fontMetrics.elidedText(text, option.textElideMode,
textrect.width())
spacing = max(metrics.leading(), 1)
distheight = rect.height() - metrics.height() - spacing
distheight = numpy.clip(distheight, 2, metrics.height())
painter.save()
painter.setClipRect(option.rect)
painter.setFont(option.font)
painter.setRenderHint(QPainter.Antialiasing)
style.drawPrimitive(QStyle.PE_PanelItemViewRow, option, painter,
option.widget)
style.drawPrimitive(QStyle.PE_PanelItemViewItem, option, painter,
option.widget)
if option.state & QStyle.State_Selected:
color = option.palette.highlightedText().color()
else:
color = option.palette.text().color()
painter.setPen(QPen(color))
textrect = textrect.adjusted(0, 0, 0, -distheight - spacing)
distrect = QRect(textrect.bottomLeft() + QPoint(0, spacing),
QSize(rect.width(), distheight))
painter.setPen(QPen(Qt.lightGray, 0.3))
self.drawDistBar(painter, distrect, dist)
painter.restore()
if text:
style.drawItemText(painter, textrect, option.displayAlignment,
option.palette,
option.state & QStyle.State_Enabled, text)
def splash_screen():
"""
"""
pm = QPixmap(
pkg_resources.resource_filename(__name__,
"icons/orange-splash-screen.png"))
version = QCoreApplication.applicationVersion()
size = 21 if len(version) < 5 else 16
font = QFont("Helvetica")
font.setPixelSize(size)
font.setBold(True)
font.setItalic(True)
font.setLetterSpacing(QFont.AbsoluteSpacing, 2)
metrics = QFontMetrics(font)
br = metrics.boundingRect(version).adjusted(-5, 0, 5, 0)
br.moveCenter(QPoint(436, 224))
p = QPainter(pm)
p.setRenderHint(QPainter.Antialiasing)
p.setRenderHint(QPainter.TextAntialiasing)
p.setFont(font)
p.setPen(QColor("#231F20"))
p.drawText(br, Qt.AlignCenter, version)
p.end()
return pm, QRect(88, 193, 200, 20)
def __visualRectForSelection(self, rect):
h, w = self.image.shape
rect = rect.normalized()
rect = rect.intersected(QRect(0, 0, w, h))
r1, r2 = rect.top(), rect.bottom() + 1
c1, c2 = rect.left(), rect.right() + 1
return QRectF(QPointF(c1, r1), QPointF(c2, r2))
def advance_time():
now = datetime.now()
time = now.strftime("%c : %f")
w.showMessage(time, alignment=Qt.AlignCenter)
i = now.second % 3
rect = QRect(100, 100 + i * 20, 400, 50)
w.setTextRect(rect)
self.assertEqual(w.textRect(), rect)
def viewport_rect(self):
"""
Return the bounding rect of the document's viewport on the scene.
"""
view = self.document.view()
vsize = view.viewport().size()
viewportrect = QRect(0, 0, vsize.width(), vsize.height())
return view.mapToScene(viewportrect).boundingRect()
def setGeometry(self, rect):
# type: (QRect) -> None
if rect == self.__rect:
return
self.__rect = QRect(rect)
super().setGeometry(rect)
for i in range(self.count()):
w = self.widget(i)
hint = w.sizeHint()
geom = QRect(rect)
size = clipMinMax(rect.size(), w.minimumSize(), w.maximumSize())
size = fixSizePolicy(size, hint, w.sizePolicy())
geom.setSize(size)
if geom != w.geometry():
w.setGeometry(geom)
def __init__(self, parent=None, **kwargs):
# type: (Union[QWidget, QLayout, None], Any) -> None
self.__rect = QRect()
if parent is not None:
super().__init__(parent, **kwargs)
else:
super().__init__(**kwargs)
self.currentChanged.connect(self._onCurrentChanged)
def decorate_welcome_icon(icon, background_color):
# type: (QIcon, Union[QColor, str]) -> QIcon
"""Return a `QIcon` with a circle shaped background.
"""
welcome_icon = QIcon()
sizes = [32, 48, 64, 80, 128, 256]
background_color = NAMED_COLORS.get(background_color, background_color)
background_color = QColor(background_color)
grad = radial_gradient(background_color)
for size in sizes:
icon_size = QSize(int(5 * size / 8), int(5 * size / 8))
icon_rect = QRect(QPoint(0, 0), icon_size)
pixmap = QPixmap(size, size)
pixmap.fill(Qt.transparent)
p = QPainter(pixmap)
p.setRenderHint(QPainter.Antialiasing, True)
p.setBrush(QBrush(grad))
p.setPen(Qt.NoPen)
ellipse_rect = QRect(0, 0, size, size)
p.drawEllipse(ellipse_rect)
icon_rect.moveCenter(ellipse_rect.center())
icon.paint(
p,
icon_rect,
Qt.AlignCenter,
)
p.end()
welcome_icon.addPixmap(pixmap)
return welcome_icon
def __autoScrollAdvance(self):
"""Advance the auto scroll
"""
pos = QCursor.pos()
pos = self.mapFromGlobal(pos)
margin = self.__autoScrollMargin
vvalue = self.verticalScrollBar().value()
hvalue = self.horizontalScrollBar().value()
vrect = QRect(0, 0, self.width(), self.height())
# What should be the speed
advance = 10
# We only do auto scroll if the mouse is inside the view.
if vrect.contains(pos):
if pos.x() < vrect.left() + margin:
self.horizontalScrollBar().setValue(hvalue - advance)
if pos.y() < vrect.top() + margin:
self.verticalScrollBar().setValue(vvalue - advance)
if pos.x() > vrect.right() - margin:
self.horizontalScrollBar().setValue(hvalue + advance)
if pos.y() > vrect.bottom() - margin:
self.verticalScrollBar().setValue(vvalue + advance)
if self.verticalScrollBar().value() == vvalue and \
self.horizontalScrollBar().value() == hvalue:
self.__stopAutoScroll()
else:
self.__stopAutoScroll()
log.debug("Auto scroll advance")
def __layoutActions(self):
left, right = self.__actions
contents = self.contentsRect()
buttonSize = QSize(contents.height(), contents.height())
margins = self.textMargins()
if left:
geom = QRect(contents.topLeft(), buttonSize)
left.button.setGeometry(geom)
margins.setLeft(buttonSize.width())
if right:
geom = QRect(contents.topRight(), buttonSize)
right.button.setGeometry(geom.translated(-buttonSize.width(), 0))
margins.setLeft(buttonSize.width())
self.setTextMargins(margins)
def testArrowContact(self, indices, x, y):
if type(indices) != list: indices = [indices]
for index in indices:
if index >= len(self.attributes) or index < 0:
continue
int_x = self.transform(xBottom, index)
bottom = self.transform(yLeft,
self.selection_conditions.get(self.attributes[index], [0, 1])[0])
bottom_rect = QRect(int_x - self.bottom_pixmap.width() / 2, bottom, self.bottom_pixmap.width(),
self.bottom_pixmap.height())
if bottom_rect.contains(QPoint(x, y)):
return 1, (index, 0)
top = self.transform(yLeft,
self.selection_conditions.get(self.attributes[index], [0, 1])[1])
top_rect = QRect(int_x - self.top_pixmap.width() / 2, top - self.top_pixmap.height(),
self.top_pixmap.width(),
self.top_pixmap.height())
if top_rect.contains(QPoint(x, y)):
return 1, (index, 1)
return 0, (0, 0)
def setGeometry(self, rect):
if not isinstance(rect, QRect):
raise TypeError("QRect required")
if rect == self.__rect:
return
self.__rect = QRect(rect)
super().setGeometry(rect)
for i in range(self.count()):
w = self.widget(i)
hint = w.sizeHint()
geom = QRect(rect)
size = clipMinMax(rect.size(), w.minimumSize(), w.maximumSize())
size = fixSizePolicy(size, hint, w.sizePolicy())
geom.setSize(size)
if geom != w.geometry():
w.setGeometry(geom)
def __autoScrollAdvance(self):
"""Advance the auto scroll
"""
pos = QCursor.pos()
pos = self.mapFromGlobal(pos)
margin = self.__autoScrollMargin
vvalue = self.verticalScrollBar().value()
hvalue = self.horizontalScrollBar().value()
vrect = QRect(0, 0, self.width(), self.height())
# What should be the speed
advance = 10
# We only do auto scroll if the mouse is inside the view.
if vrect.contains(pos):
if pos.x() < vrect.left() + margin:
self.horizontalScrollBar().setValue(hvalue - advance)
if pos.y() < vrect.top() + margin:
self.verticalScrollBar().setValue(vvalue - advance)
if pos.x() > vrect.right() - margin:
self.horizontalScrollBar().setValue(hvalue + advance)
if pos.y() > vrect.bottom() - margin:
self.verticalScrollBar().setValue(vvalue + advance)
if self.verticalScrollBar().value() == vvalue and \
self.horizontalScrollBar().value() == hvalue:
self.__stopAutoScroll()
else:
self.__stopAutoScroll()
log.debug("Auto scroll advance")
def drawBackground(self, painter, rect):
super().drawBackground(painter, rect)
if not self.__backgroundIcon.isNull():
painter.setClipRect(rect)
vrect = QRect(QPoint(0, 0), self.viewport().size())
vrect = self.mapToScene(vrect).boundingRect()
pm = self.__backgroundIcon.pixmap(
vrect.size().toSize().boundedTo(QSize(200, 200))
)
pmrect = QRect(QPoint(0, 0), pm.size())
pmrect.moveCenter(vrect.center().toPoint())
if rect.toRect().intersects(pmrect):
painter.drawPixmap(pmrect, pm)
def widget_popup_geometry(pos, widget):
widget.ensurePolished()
if widget.testAttribute(Qt.WA_Resized):
size = widget.size()
else:
size = widget.sizeHint()
desktop = QApplication.desktop()
screen_geom = desktop.availableGeometry(pos)
# Adjust the size to fit inside the screen.
if size.height() > screen_geom.height():
size.setHeight(screen_geom.height())
if size.width() > screen_geom.width():
size.setWidth(screen_geom.width())
geom = QRect(pos, size)
if geom.top() < screen_geom.top():
geom.setTop(screen_geom.top())
if geom.left() < screen_geom.left():
geom.setLeft(screen_geom.left())
bottom_margin = screen_geom.bottom() - geom.bottom()
right_margin = screen_geom.right() - geom.right()
if bottom_margin < 0:
# Falls over the bottom of the screen, move it up.
geom.translate(0, bottom_margin)
# TODO: right to left locale
if right_margin < 0:
# Falls over the right screen edge, move the menu to the
# other side of pos.
geom.translate(-size.width(), 0)
return geom
def showPopup(self):
# type: () -> None
"""
Reimplemented from QComboBox.showPopup
Popup up a customized view and filter edit line.
Note
----
The .popup(), .lineEdit(), .completer() of the base class are not used.
"""
if self.__popup is not None:
# We have user entered state that cannot be disturbed
# (entered filter text, scroll offset, ...)
return # pragma: no cover
if self.count() == 0:
return
opt = QStyleOptionComboBox()
self.initStyleOption(opt)
popup = QListView(
uniformItemSizes=True,
horizontalScrollBarPolicy=Qt.ScrollBarAlwaysOff,
verticalScrollBarPolicy=Qt.ScrollBarAsNeeded,
iconSize=self.iconSize(),
)
popup.setFocusProxy(self.__searchline)
popup.setParent(self, Qt.Popup | Qt.FramelessWindowHint)
popup.setItemDelegate(_ComboBoxListDelegate(popup))
proxy = QSortFilterProxyModel(
popup, filterCaseSensitivity=Qt.CaseInsensitive
)
proxy.setFilterKeyColumn(self.modelColumn())
proxy.setSourceModel(self.model())
popup.setModel(proxy)
root = proxy.mapFromSource(self.rootModelIndex())
popup.setRootIndex(root)
self.__popup = popup
self.__proxy = proxy
self.__searchline.setText("")
self.__searchline.setPlaceholderText("Filter...")
self.__searchline.setVisible(True)
self.__searchline.textEdited.connect(proxy.setFilterFixedString)
style = self.style() # type: QStyle
popuprect_origin = style.subControlRect(
QStyle.CC_ComboBox, opt, QStyle.SC_ComboBoxListBoxPopup, self
) # type: QRect
popuprect_origin = QRect(
self.mapToGlobal(popuprect_origin.topLeft()),
popuprect_origin.size()
)
editrect = style.subControlRect(
QStyle.CC_ComboBox, opt, QStyle.SC_ComboBoxEditField, self
) # type: QRect
self.__searchline.setGeometry(editrect)
desktop = QApplication.desktop()
screenrect = desktop.availableGeometry(self) # type: QRect
# get the height for the view
listrect = QRect()
for i in range(min(proxy.rowCount(root), self.maxVisibleItems())):
index = proxy.index(i, self.modelColumn(), root)
if index.isValid():
listrect = listrect.united(popup.visualRect(index))
if listrect.height() >= screenrect.height():
break
window = popup.window() # type: QWidget
window.ensurePolished()
if window.layout() is not None:
window.layout().activate()
else:
QApplication.sendEvent(window, QEvent(QEvent.LayoutRequest))
margins = qwidget_margin_within(popup.viewport(), window)
height = (listrect.height() + 2 * popup.spacing() +
margins.top() + margins.bottom())
popup_size = (QSize(popuprect_origin.width(), height)
.expandedTo(window.minimumSize())
.boundedTo(window.maximumSize())
.boundedTo(screenrect.size()))
popuprect = QRect(popuprect_origin.bottomLeft(), popup_size)
popuprect = dropdown_popup_geometry(
popuprect, popuprect_origin, screenrect)
popup.setGeometry(popuprect)
current = proxy.mapFromSource(
self.model().index(self.currentIndex(), self.modelColumn(),
self.rootModelIndex()))
popup.setCurrentIndex(current)
popup.scrollTo(current, QAbstractItemView.EnsureVisible)
popup.show()
popup.setFocus(Qt.PopupFocusReason)
popup.installEventFilter(self)
popup.viewport().installEventFilter(self)
popup.viewport().setMouseTracking(True)
self.update()
self.__popupTimer.restart()
def paint(self, painter, option, index):
rect = QRect(option.rect)
is_selected = index.data(VariableSelectionModel.IsSelected)
if option.state & QStyle.State_MouseOver:
txt = [" Add ", " Remove "][is_selected]
txtw = painter.fontMetrics().width(txt)
painter.save()
painter.setPen(Qt.NoPen)
painter.setBrush(QColor("#ccc"))
brect = QRect(rect.x() + rect.width() - 8 - txtw, rect.y(),
txtw, rect.height())
painter.drawRoundedRect(brect, 4, 4)
painter.restore()
painter.drawText(brect, Qt.AlignCenter, txt)
painter.save()
double_pen = painter.pen()
double_pen.setWidth(2 * double_pen.width())
if is_selected:
next = index.sibling(index.row() + 1, index.column())
if not next.isValid():
painter.setPen(double_pen)
painter.drawLine(rect.bottomLeft(), rect.bottomRight())
elif not next.data(VariableSelectionModel.IsSelected):
painter.drawLine(rect.bottomLeft(), rect.bottomRight())
elif not index.row():
down = QPoint(0, painter.pen().width())
painter.setPen(double_pen)
painter.drawLine(rect.topLeft() + down, rect.topRight() + down)
else:
prev = index.sibling(index.row() - 1, index.column())
if prev.data(VariableSelectionModel.IsSelected):
painter.drawLine(rect.topLeft(), rect.topRight())
painter.restore()
super().paint(painter, option, index)
def dropdown_popup_geometry(geometry, origin, screen):
# type: (QRect, QRect, QRect) -> QRect
"""
Move/constrain the geometry for a drop down popup.
Parameters
----------
geometry : QRect
The base popup geometry if not constrained.
origin : QRect
The origin rect from which the popup extends.
screen : QRect
The available screen geometry into which the popup must fit.
Returns
-------
geometry: QRect
Constrained drop down list geometry to fit into screen
"""
# if the popup geometry extends bellow the screen and there is more room
# above the popup origin ...
geometry = QRect(geometry)
geometry.moveTopLeft(origin.bottomLeft() + QPoint(0, 1))
if geometry.bottom() > screen.bottom() \
and origin.center().y() > screen.center().y():
# ...flip the rect about the origin so it extends upwards
geometry.moveBottom(origin.top() - 1)
# fixup horizontal position if it extends outside the screen
if geometry.left() < screen.left():
geometry.moveLeft(screen.left())
if geometry.right() > screen.right():
geometry.moveRight(screen.right())
# bounded by screen geometry
return geometry.intersected(screen)
def popup(self, pos=None, searchText=""):
"""
Popup the menu at `pos` (in screen coordinates). 'Search' text field
is initialized with `searchText` if provided.
"""
if pos is None:
pos = QPoint()
self.__clearCurrentItems()
self.__search.setText(searchText)
patt = QRegExp("(^|\W)"+searchText)
patt.setCaseSensitivity(False)
self.__suggestPage.setFilterRegExp(patt)
UsageStatistics.set_last_search_query(searchText)
self.ensurePolished()
if self.testAttribute(Qt.WA_Resized) and self.sizeGripEnabled():
size = self.size()
else:
size = self.sizeHint()
desktop = QApplication.desktop()
screen_geom = desktop.availableGeometry(pos)
# Adjust the size to fit inside the screen.
if size.height() > screen_geom.height():
size.setHeight(screen_geom.height())
if size.width() > screen_geom.width():
size.setWidth(screen_geom.width())
geom = QRect(pos, size)
if geom.top() < screen_geom.top():
geom.setTop(screen_geom.top())
if geom.left() < screen_geom.left():
geom.setLeft(screen_geom.left())
bottom_margin = screen_geom.bottom() - geom.bottom()
right_margin = screen_geom.right() - geom.right()
if bottom_margin < 0:
# Falls over the bottom of the screen, move it up.
geom.translate(0, bottom_margin)
# TODO: right to left locale
if right_margin < 0:
# Falls over the right screen edge, move the menu to the
# other side of pos.
geom.translate(-size.width(), 0)
self.setGeometry(geom)
self.show()
self.setFocusProxy(self.__search)
def __selectionForArea(self, area):
r1, c1 = self._cellAt(area.topLeft())
r2, c2 = self._cellAt(area.bottomRight())
selarea = QRect(c1, r1, c2 - c1 + 1, r2 - r1 + 1)
return selarea.normalized()
def __layout(self):
# position itself over `widget`
widget = self.__widget
if widget is None:
return
alignment = self.__alignment
policy = self.sizePolicy()
if widget.isWindow():
bounds = widget.geometry()
else:
bounds = QRect(widget.mapToGlobal(QPoint(0, 0)),
widget.size())
if self.isWindow():
bounds = bounds
else:
bounds = QRect(self.parent().mapFromGlobal(bounds.topLeft()),
bounds.size())
sh = self.sizeHint()
minsh = self.minimumSizeHint()
minsize = self.minimumSize()
if minsize.isNull():
minsize = minsh
maxsize = bounds.size().boundedTo(self.maximumSize())
minsize = minsize.boundedTo(maxsize)
effectivesh = sh.expandedTo(minsize).boundedTo(maxsize)
hpolicy = policy.horizontalPolicy()
vpolicy = policy.verticalPolicy()
def getsize(hint, minimum, maximum, policy):
if policy == QSizePolicy.Ignored:
return maximum
elif policy & QSizePolicy.ExpandFlag:
return maximum
else:
return max(hint, minimum)
width = getsize(effectivesh.width(), minsize.width(),
maxsize.width(), hpolicy)
heightforw = self.heightForWidth(width)
if heightforw > 0:
height = getsize(heightforw, minsize.height(),
maxsize.height(), vpolicy)
else:
height = getsize(effectivesh.height(), minsize.height(),
maxsize.height(), vpolicy)
size = QSize(width, height)
if alignment & Qt.AlignLeft:
x = bounds.x()
elif alignment & Qt.AlignRight:
x = bounds.right() - size.width()
else:
x = bounds.x() + max(0, bounds.width() - size.width()) // 2
if alignment & Qt.AlignTop:
y = bounds.y()
elif alignment & Qt.AlignBottom:
y = bounds.bottom() - size.height()
else:
y = bounds.y() + max(0, bounds.height() - size.height()) // 2
geom = QRect(QPoint(x, y), size)
self.setGeometry(geom)
def __paintEventNoStyle(self):
p = QPainter(self)
opt = QStyleOptionToolButton()
self.initStyleOption(opt)
fm = QFontMetrics(opt.font)
palette = opt.palette
# highlight brush is used as the background for the icon and background
# when the tab is expanded and as mouse hover color (lighter).
brush_highlight = palette.highlight()
foregroundrole = QPalette.ButtonText
if opt.state & QStyle.State_Sunken:
# State 'down' pressed during a mouse press (slightly darker).
background_brush = brush_darker(brush_highlight, 110)
foregroundrole = QPalette.HighlightedText
elif opt.state & QStyle.State_MouseOver:
background_brush = brush_darker(brush_highlight, 95)
foregroundrole = QPalette.HighlightedText
elif opt.state & QStyle.State_On:
background_brush = brush_highlight
foregroundrole = QPalette.HighlightedText
else:
# The default button brush.
background_brush = palette.button()
rect = opt.rect
icon_area_rect = QRect(rect)
icon_area_rect.setRight(int(icon_area_rect.height() * 1.26))
text_rect = QRect(rect)
text_rect.setLeft(icon_area_rect.right() + 10)
# Background (TODO: Should the tab button have native
# toolbutton shape, drawn using PE_PanelButtonTool or even
# QToolBox tab shape)
# Default outline pen
pen = QPen(palette.color(QPalette.Mid))
p.save()
p.setPen(Qt.NoPen)
p.setBrush(QBrush(background_brush))
p.drawRect(rect)
# Draw the background behind the icon if the background_brush
# is different.
if not opt.state & QStyle.State_On:
p.setBrush(brush_highlight)
p.drawRect(icon_area_rect)
# Line between the icon and text
p.setPen(pen)
p.drawLine(icon_area_rect.topRight(),
icon_area_rect.bottomRight())
if opt.state & QStyle.State_HasFocus:
# Set the focus frame pen and draw the border
pen = QPen(QColor(FOCUS_OUTLINE_COLOR))
p.setPen(pen)
p.setBrush(Qt.NoBrush)
# Adjust for pen
rect = rect.adjusted(0, 0, -1, -1)
p.drawRect(rect)
else:
p.setPen(pen)
# Draw the top/bottom border
if self.position == QStyleOptionToolBox.OnlyOneTab or \
self.position == QStyleOptionToolBox.Beginning or \
self.selected & \
QStyleOptionToolBox.PreviousIsSelected:
p.drawLine(rect.topLeft(), rect.topRight())
p.drawLine(rect.bottomLeft(), rect.bottomRight())
p.restore()
p.save()
text = fm.elidedText(opt.text, Qt.ElideRight, text_rect.width())
p.setPen(QPen(palette.color(foregroundrole)))
p.setFont(opt.font)
p.drawText(text_rect,
int(Qt.AlignVCenter | Qt.AlignLeft) | \
int(Qt.TextSingleLine),
text)
if not opt.icon.isNull():
if opt.state & QStyle.State_Enabled:
mode = QIcon.Normal
else:
mode = QIcon.Disabled
if opt.state & QStyle.State_On:
state = QIcon.On
else:
state = QIcon.Off
icon_area_rect = icon_area_rect
icon_rect = QRect(QPoint(0, 0), opt.iconSize)
icon_rect.moveCenter(icon_area_rect.center())
opt.icon.paint(p, icon_rect, Qt.AlignCenter, mode, state)
p.restore()
def popup_position_from_source(popup, source, orientation=Qt.Vertical):
popup.ensurePolished()
source.ensurePolished()
if popup.testAttribute(Qt.WA_Resized):
size = popup.size()
else:
size = popup.sizeHint()
desktop = QApplication.desktop()
screen_geom = desktop.availableGeometry(source)
source_rect = QRect(source.mapToGlobal(QPoint(0, 0)), source.size())
if orientation == Qt.Vertical:
if source_rect.right() + size.width() < screen_geom.right():
x = source_rect.right()
else:
x = source_rect.left() - size.width()
# bottom overflow
dy = source_rect.top() + size.height() - screen_geom.bottom()
if dy < 0:
y = source_rect.top()
else:
y = source_rect.top() - dy
else:
# right overflow
dx = source_rect.left() + size.width() - screen_geom.right()
if dx < 0:
x = source_rect.left()
else:
x = source_rect.left() - dx
if source_rect.bottom() + size.height() < screen_geom.bottom():
y = source_rect.bottom()
else:
y = source_rect.top() - size.height()
return QPoint(x, y)