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,此处调用QPixmap的mask()函数获得图片自身的遮罩,是一个QBitmap对象,在实例中使用的是PNG格式的图片,它的透明部分就是一个遮罩 |
paintEvent(self,QPaintEvent) | 通过重载paintEvent()函数绘制窗口背景 |
实现不规则窗口的最简单方式就是图片素材不仅当遮罩层,还当背景图片,通过重载paintEvent()函数绘制窗口背景
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)
#设置标题与初始窗口大小
self.setWindowTitle('不规则窗口的实现例子')
self.resize(560,390)
def paintEvent(self, QPaintEvent):
painter=QPainter(self)
#在指定位置绘制图片
painter.drawPixmap(0,0,280,390,QPixmap(r'./images/dog.jpg'))
painter.drawPixmap(280,0,280,390,QBitmap(r'./images/dog.jpg'))
if __name__ == '__main__':
app=QApplication(sys.argv)
form=MyForm()
form.show()
sys.exit(app.exec_())
运行效果如下
使用两张图片,一张用来做遮罩来控制窗口的大小,然后在利用paintEvent()函数重绘另一张为窗口的背景图。
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)
#设置标题与初始窗口大小
self.setWindowTitle('不规则窗口的实现例子')
self.pix=QBitmap('./images/mask.png')
self.resize(self.pix.size())
self.setMask(self.pix)
def paintEvent(self, QPaintEvent):
painter=QPainter(self)
#在指定位置绘制图片
painter.drawPixmap(0,0,self.pix.width(),self.pix.height(),QPixmap(r'./images/screen1.jpg'))
if __name__ == '__main__':
app=QApplication(sys.argv)
form=MyForm()
form.show()
sys.exit(app.exec_())
第二个窗口的实例是不可以拖动的,这里实现可以拖动的功能
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 pix
def mypix(self):
#获得图片自身的遮罩
self.pix = QBitmap("./images/mask.png")
#将获得的图片的大小作为窗口的大小
self.resize(self.pix.size())
#增加一个遮罩
self.setMask(self.pix)
#print(self.pix.size())
self.dragPosition = None
# 重定义鼠标按下响应函数mousePressEvent(QMouseEvent)
# 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):
#鼠标左键按下
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)
#在指定位置绘制图片
painter.drawPixmap(0, 0, self.width(), self.height(), QPixmap("./images/boy.png"))
if __name__ == '__main__':
app = QApplication(sys.argv)
form = ShapeWidget()
form.show()
app.exec_()
相关源码及素材
https://download.csdn.net/download/jia666666/10616087