class Container(QWidget):
def __init__(self, parent=None):
super().__init__(parent=parent)
self._border_radius = 10
self.label = QLabel('...', self)
self._size_grip = QSizeGrip(self)
self._size_grip.setFixedWidth(self._border_radius * 2)
font = self.font()
font.setPointSize(24)
self.label.setFont(font)
self.label.setAlignment(Qt.AlignBaseline | Qt.AlignVCenter
| Qt.AlignHCenter)
self.label.setWordWrap(False)
self._layout = QHBoxLayout(self)
self._layout.setContentsMargins(0, 0, 0, 0)
self._layout.setSpacing(0)
self._layout.addSpacing(self._border_radius * 2)
self._layout.addWidget(self.label)
self._layout.addWidget(self._size_grip)
self._layout.setAlignment(self._size_grip, Qt.AlignBottom)
def paintEvent(self, e):
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(Qt.NoPen)
painter.setBrush(self.palette().color(QPalette.Window))
painter.drawRoundedRect(self.rect(), self._border_radius,
self._border_radius)
painter.save()
painter.setPen(QColor('white'))
option = QTextOption()
option.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
rect = QRect(self.mapToParent(self._size_grip.pos()),
self._size_grip.size())
painter.drawText(QRectF(rect), '●', option)
painter.restore()
def show_color_dialog(self, bg=True):
def set_color(color):
palette = self.palette()
if bg:
palette.setColor(QPalette.Active, QPalette.Window, color)
palette.setColor(QPalette.Active, QPalette.Base, color)
palette.setColor(QPalette.Inactive, QPalette.Window, color)
palette.setColor(QPalette.Inactive, QPalette.Base, color)
else:
palette.setColor(QPalette.Active, QPalette.WindowText, color)
palette.setColor(QPalette.Active, QPalette.Text, color)
palette.setColor(QPalette.Inactive, QPalette.WindowText, color)
palette.setColor(QPalette.Inactive, QPalette.Text, color)
self.label.setPalette(palette)
self.setPalette(palette)
dialog = QColorDialog(self)
dialog.currentColorChanged.connect(set_color)
dialog.colorSelected.connect(set_color)
dialog.setOption(QColorDialog.ShowAlphaChannel, True)
dialog.exec()
def show_font_dialog(self):
dialog = QFontDialog(self.label.font(), self)
dialog.currentFontChanged.connect(self.label.setFont)
dialog.fontSelected.connect(self.label.setFont)
dialog.exec()
def contextMenuEvent(self, e):
menu = QMenu()
bg_color_action = QAction('背景颜色', menu)
fg_color_action = QAction('文字颜色', menu)
font_action = QAction('字体', menu)
menu.addAction(bg_color_action)
menu.addAction(fg_color_action)
menu.addSeparator()
menu.addAction(font_action)
bg_color_action.triggered.connect(
lambda: self.show_color_dialog(bg=True))
fg_color_action.triggered.connect(
lambda: self.show_color_dialog(bg=False))
font_action.triggered.connect(self.show_font_dialog)
menu.exec(e.globalPos())
class ResizableFramelessContainer(QWidget):
"""A resizable frameless container
ResizableFramelessContainer can be moved and resized by mouse.
Call `attach_widget` to attach an inner widget and `detach` to
detach the inner widget.
NOTE: this is mainly designed for picture in picture mode currently.
"""
def __init__(self, ):
super().__init__(parent=None)
self._widget = None
self._timer = QTimer(self)
self._old_pos = None
self._widget = None
self._size_grip = QSizeGrip(self)
self._timer.timeout.connect(self.__on_timeout)
# setup window layout
self.setWindowFlags(Qt.WindowStaysOnTopHint | Qt.FramelessWindowHint)
self._size_grip.setFixedSize(20, 20)
self._layout = QVBoxLayout(self)
self._layout.setContentsMargins(0, 0, 0, 0)
self._layout.setSpacing(0)
self._layout.addWidget(self._size_grip)
self._layout.setAlignment(self._size_grip,
Qt.AlignBottom | Qt.AlignRight)
self.setMouseTracking(True)
def attach_widget(self, widget):
"""set inner widget"""
self._widget = widget
self._widget.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Expanding)
self._layout.insertWidget(0, self._widget)
def detach(self):
self._layout.removeWidget(self._widget)
self._widget = None
def paintEvent(self, e):
painter = QPainter(self)
if self._size_grip.isVisible():
painter.save()
painter.setPen(QColor('white'))
option = QTextOption()
option.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
rect = QRect(self._size_grip.pos(), self._size_grip.size())
painter.drawText(QRectF(rect), '●', option)
painter.restore()
def mousePressEvent(self, e):
self._old_pos = e.globalPos()
def mouseMoveEvent(self, e):
# NOTE: e.button() == Qt.LeftButton don't work on Windows
# on Windows, even I drag with LeftButton, the e.button() return 0,
# which means no button
if self._old_pos is not None:
delta = e.globalPos() - self._old_pos
self.move(self.x() + delta.x(), self.y() + delta.y())
self._old_pos = e.globalPos()
def mouseReleaseEvent(self, e):
self._old_pos = None
def enterEvent(self, e):
super().enterEvent(e)
if not self._size_grip.isVisible():
self.resize(self.width(), self.height() + 20)
self._size_grip.show()
self._timer.stop()
def leaveEvent(self, e):
super().leaveEvent(e)
self._timer.start(2000)
def resizeEvent(self, e):
super().resizeEvent(e)
def __on_timeout(self):
if self._size_grip.isVisible():
self._size_grip.hide()
self.resize(self.width(), self.height() - 20)
