class FadingCanvas(FadingDialog):
"""The black semi transparent canvas that covers the application"""
def __init__(self, parent, opacity, duration, easing_curve, color):
super(FadingCanvas, self).__init__(parent, opacity, duration,
easing_curve)
self.parent = parent
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
class FadingCanvas(FadingDialog):
"""The black semi transparent canvas that covers the application"""
def __init__(self, parent, opacity, duration, easing_curve, color):
super(FadingCanvas, self).__init__(parent, opacity, duration,
easing_curve)
self.parent = parent
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