如何在 PyQt 中创建一个不规则形状的窗口?
我找到了这个 C++ 解决方案,但是我不确定如何在 Python 中做到这一点。
干得好:
from PyQt4 import QtGui, QtWebKit
from PyQt4.QtCore import Qt, QSize
class RoundWindow(QtWebKit.QWebView):
def __init__(self):
super(RoundWindow, self).__init__()
self.initUI()
def initUI(self):
self.setWindowFlags(Qt.FramelessWindowHint)
self.setAttribute(Qt.WA_TranslucentBackground)
def sizeHint(self):
return QSize(300,300)
def paintEvent(self, event):
qp = QtGui.QPainter()
qp.begin(self)
qp.setRenderHint(QtGui.QPainter.Antialiasing);
qp.setPen(Qt.NoPen);
qp.setBrush(QtGui.QColor(255, 0, 0, 127));
qp.drawEllipse(0, 0, 300, 300);
qp.end()
a = QtGui.QApplication([])
rw = RoundWindow()
rw.show()
a.exec_()
我一生中从未编写过 C++,但阅读该代码示例并不难。您会发现大多数在线 Qt 文档都是用 C++ 编写的,因此至少能够阅读是很有用的。
这是一个 PyQT5 示例,它创建无框、可移动的 QWidget,使用透明 png 掩码生成不规则形状的 Window:
from PyQt5 import QtGui, QtWidgets
from PyQt5.QtCore import Qt, QPoint
class IrregularWindow(QtWidgets.QWidget):
def __init__(self):
super(IrregularWindow, self).__init__()
self.initUI()
def initUI(self):
self.setWindowFlags(Qt.FramelessWindowHint)
self.setAttribute(Qt.WA_TranslucentBackground)
def sizeHint(self):
return QSize(107, 41) # Set this to the exact image resolution
def paintEvent(self, event):
qp = QtGui.QPainter()
qp.begin(self)
pixmap = QtGui.QPixmap()
pixmap.load('image_with_transparency.png')
qp.drawPixmap(QPoint(0, 0), pixmap)
qp.end()
def mousePressEvent(self, event):
self.oldPos = event.globalPos()
def mouseMoveEvent(self, event):
delta = QPoint(event.globalPos() - self.oldPos)
self.move(self.x() + delta.x(), self.y() + delta.y())
self.oldPos = event.globalPos()
a = QtWidgets.QApplication([])
rw = IrregularWindow()
rw.show()
a.exec_()