一文详解PyQt5中实现不规则窗口的显示

PyQt5 不规则窗口的显示

函数描述
setMask(self, QBitmap)
setMask(self, QRegion)
setMask()的作用是为调用它的控件增加一个遮罩,遮住所选区域以外的部分,使之看起来是透明的。它的参数可以为QBitmap或QRegion对象。
paintEvent(self, QPaintEvent)通过重载paintEvent()函数绘制窗口背景

QPixmap和QBitmap绘图的效果对比

import sys
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtGui import QPixmap, QPainter, QBitmap

class MyForm(QWidget):
 def __init__(self, parent=None):
 super(MyForm, self).__init__(parent)
 self.setWindowTitle("不规则窗口的实现例子")

 def paintEvent(self, event):
 painter = QPainter(self)
 painter.drawPixmap(0, 0, 280, 390, QPixmap(r"./pyqt5/images/dog.jpg"))
 painter.drawPixmap(300, 0, 280, 390, QBitmap(r"./pyqt5/images/dog.jpg"))

if __name__ == "__main__":
 app = QApplication(sys.argv)
 form = MyForm()
 form.show()
 sys.exit(app.exec_())

不可以拖动的不规则窗口

import sys
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtGui import QPixmap, QPainter, QBitmap

class WinForm(QWidget):
 def __init__(self, parent=None):
 super(WinForm, self).__init__(parent)
 self.setWindowTitle("不规则窗口的实现例子")

 self.pix = QBitmap("./pyqt5/images/mask.png")
 self.resize(self.pix.size())
 self.setMask(self.pix)

 def paintEvent(self, event):
 painter = QPainter(self)
 # 在指定区域直接绘制窗口背景
 painter.drawPixmap(0, 0, self.pix.width(), self.pix.height(), QPixmap("./pyqt5/images/screen1.jpg"))

if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = WinForm()
 win.show()
 sys.exit(app.exec_())

可以拖动的不规则窗口

import sys
from PyQt5.QtWidgets import QApplication ,QWidget 
from PyQt5.QtGui import QPixmap, QPainter , QCursor , QBitmap
from PyQt5.QtCore import Qt 

class ShapeWidget(QWidget): 
	def __init__(self,parent=None): 
	super(ShapeWidget,self).__init__(parent)
	self.setWindowTitle("不规则的,可以拖动的窗体实现例子") 
	self.mypix()	

 # 显示不规则 pic
	def mypix(self):
	self.pix = QBitmap( "./pyqt5/images/mask.png" )
	self.resize(self.pix.size()) 
	self.setMask(self.pix)
	print( self.pix.size())
	self.dragPosition = None

	# 重定义鼠标按下响应函数mousePressEvent(QMouseEvent)和鼠标移动响应函数mouseMoveEvent(QMouseEvent),使不规则窗体能响应鼠标事件,随意拖动。
	def mousePressEvent(self, event):
	if event.button() == Qt.LeftButton:
	self.m_drag=True
	self.m_DragPosition=event.globalPos()-self.pos()
	event.accept()
	self.setCursor(QCursor(Qt.OpenHandCursor))
	if event.button()==Qt.RightButton: 
	self.close() 
	
	def mouseMoveEvent(self, QMouseEvent):
	if Qt.LeftButton and self.m_drag:
	 # 当左键移动窗体修改偏移值
	self.move(QMouseEvent.globalPos()- self.m_DragPosition )
	QMouseEvent.accept()
	
	def mouseReleaseEvent(self, QMouseEvent):
	self.m_drag=False
	self.setCursor(QCursor(Qt.ArrowCursor))
 
 #一般 paintEvent 在窗体首次绘制加载, 要重新加载paintEvent 需要重新加载窗口使用 self.update() or self.repaint() 
	def paintEvent(self, event):
	painter = QPainter(self)
	painter.drawPixmap(0,0,self.width(),self.height(),QPixmap("./pyqt5/images/boy.png"))
	
if __name__ == '__main__':
 app=QApplication(sys.argv)
 form=ShapeWidget()
 form.show()
 app.exec_()

不规则窗口实现动画效果

import sys
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtGui import QPixmap, QPainter, QCursor
from PyQt5.QtCore import Qt, QTimer

class ShapeWidget(QWidget):
 def __init__(self, parent=None):
 super(ShapeWidget, self).__init__(parent)
 self.i = 1
 self.mypix()
 self.timer = QTimer()
 self.timer.setInterval(500) # 定时器每500毫秒更新一次
 self.timer.timeout.connect(self.timeChange)
 self.timer.start()

 # 显示不规则图片
 def mypix(self):
 self.update()
 if self.i == 5:
 self.i = 1
 self.mypic = {1:'./pyqt5/images/left.png', 2:'./pyqt5/images/up.png', 3:'./pyqt5/images/right.png', 4:'./pyqt5/images/down.png'}
 self.pix = QPixmap(self.mypic[self.i], "0", Qt.AvoidDither | Qt.ThresholdDither | Qt.ThresholdAlphaDither)
 self.resize(self.pix.size())
 self.setMask(self.pix.mask())
 self.dragPosition = None

 def mousePressEvent(self, event):
 if event.button() == Qt.LeftButton:
 self.m_drag = True
 self.m_DragPosition = event.globalPos() - self.pos()
 event.accept()
 self.setCursor(QCursor(Qt.OpenHandCursor))

 def mouseMoveEvent(self, QMouseEvent):
 if Qt.LeftButton and self.m_drag:
 self.move(QMouseEvent.globalPos() - self.m_DragPosition)
 QMouseEvent.accept()
 
 def mouseReleaseEvent(self, QMouseEvent):
 self.m_drag = False
 self.setCursor(QCursor(Qt.ArrowCursor))

 def paintEvent(self, event):
 painter = QPainter(self)
 painter.drawPixmap(0, 0, self.pix.width(), self.pix.height(), self.pix)

 def mouseDoubleClickEvent(self, event):
 if event.button() == 1:
 self.i += 1
 self.mypix()

 def timeChange(self):
 self.i += 1
 self.mypix()

if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = ShapeWidget()
 win.show()
 sys.exit(app.exec_())

加载GIF动画效果

import sys
from PyQt5.QtWidgets import QApplication, QLabel, QWidget
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QMovie

class LoadingGifWin(QWidget):
 def __init__(self, parent=None):
 super(LoadingGifWin, self).__init__(parent)
 self.label = QLabel('', self)
 self.setFixedSize(128, 128) 
 self.setWindowFlags(Qt.Dialog | Qt.CustomizeWindowHint)
 self.movie = QMovie("./pyqt5/images/loading.gif")
 self.label.setMovie(self.movie)
 self.movie.start()
 
if __name__ == "__main__":
 app = QApplication(sys.argv)
 win = LoadingGifWin()
 win.show()
 sys.exit(app.exec_())

作者:SongYuLong的博客原文地址:https://blog.csdn.net/songyulong8888/article/details/128129396

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