Pyqt实现无边框窗口拖动以及窗口大小改变
本文实例为大家分享了Pyqt实现无边框窗口拖动及大小改变的具体代码，供大家参考，具体内容如下
做个记录，绘制边框阴影可以忽略这里不是主要
根据网上某位仁兄Qt的实现转过来的大笑，上完整代码
#coding:utf-8
fromPyQt4.Qtimport*
importsys
PADDING=4
sys.setrecursionlimit(10000)
classShadowWidget(QWidget):
def__init__(self,parent=None):
super(ShadowWidget,self).__init__(parent)
self.setWindowFlags(Qt.FramelessWindowHint|Qt.WindowSystemMenuHint)
self.setAttribute(Qt.WA_TranslucentBackground)
self.SHADOW_WIDTH=0#边框距离
self.isLeftPressDown=False#鼠标左键是否按下
self.dragPosition=0#拖动时坐标
self.Numbers=self.enum(UP=0,DOWN=1,LEFT=2,RIGHT=3,LEFTTOP=4,LEFTBOTTOM=5,RIGHTBOTTOM=6,RIGHTTOP=7,NONE=8)#枚举参数
self.setMinimumHeight(500)#窗体最小高度
self.setMinimumWidth(1000)#窗体最小宽度
self.dir=self.Numbers.NONE#初始鼠标状态
self.setMouseTracking(True)
#绘制边框阴影
defdrawShadow(self,painter):
#绘制左上角、左下角、右上角、右下角、上、下、左、右边框
self.pixmaps=QStringList()
self.pixmaps.append(QString("./img/border/left_top.png"))
self.pixmaps.append(QString("./img/border/left_bottom.png"))
self.pixmaps.append(QString("./img/border/right_top.png"))
self.pixmaps.append(QString("./img/border/right_bottom.png"))
self.pixmaps.append(QString("./img/border/top_mid.png"))
self.pixmaps.append(QString("./img/border/bottom_mid.png"))
self.pixmaps.append(QString("./img/border/left_mid.png"))
self.pixmaps.append(QString("./img/border/right_mid.png"))
painter.drawPixmap(0,0,self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[0]))#左上角
painter.drawPixmap(self.width()-self.SHADOW_WIDTH,0,self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[2]))#右上角
painter.drawPixmap(0,self.height()-self.SHADOW_WIDTH,self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[1]))#左下角
painter.drawPixmap(self.width()-self.SHADOW_WIDTH,self.height()-self.SHADOW_WIDTH,self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[3]))#右下角
painter.drawPixmap(0,self.SHADOW_WIDTH,self.SHADOW_WIDTH,self.height()-2*self.SHADOW_WIDTH,QPixmap(self.pixmaps[6]).scaled(self.SHADOW_WIDTH,self.height()-2*self.SHADOW_WIDTH))#左
painter.drawPixmap(self.width()-self.SHADOW_WIDTH,self.SHADOW_WIDTH,self.SHADOW_WIDTH,self.height()-2*self.SHADOW_WIDTH,QPixmap(self.pixmaps[7]).scaled(self.SHADOW_WIDTH,self.height()-2*self.SHADOW_WIDTH))#右
painter.drawPixmap(self.SHADOW_WIDTH,0,self.width()-2*self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[4]).scaled(self.width()-2*self.SHADOW_WIDTH,self.SHADOW_WIDTH))#上
painter.drawPixmap(self.SHADOW_WIDTH,self.height()-self.SHADOW_WIDTH,self.width()-2*self.SHADOW_WIDTH,self.SHADOW_WIDTH,QPixmap(self.pixmaps[5]).scaled(self.width()-2*self.SHADOW_WIDTH,self.SHADOW_WIDTH))#下
#枚举参数
defenum(self,**enums):
returntype('Enum',(),enums)
defregion(self,cursorGlobalPoint):
#获取窗体在屏幕上的位置区域，tl为topleft点，rb为rightbottom点
rect=self.rect()
tl=self.mapToGlobal(rect.topLeft())
rb=self.mapToGlobal(rect.bottomRight())
x=cursorGlobalPoint.x()
y=cursorGlobalPoint.y()
if(tl.x()+PADDING>=xandtl.x()<=xandtl.y()+PADDING>=yandtl.y()<=y):
#左上角
self.dir=self.Numbers.LEFTTOP
self.setCursor(QCursor(Qt.SizeFDiagCursor))#设置鼠标形状
elif(x>=rb.x()-PADDINGandx<=rb.x()andy>=rb.y()-PADDINGandy<=rb.y()):
#右下角
self.dir=self.Numbers.RIGHTBOTTOM
self.setCursor(QCursor(Qt.SizeFDiagCursor))
elif(x<=tl.x()+PADDINGandx>=tl.x()andy>=rb.y()-PADDINGandy<=rb.y()):
#左下角
self.dir=self.Numbers.LEFTBOTTOM
self.setCursor(QCursor(Qt.SizeBDiagCursor))
elif(x<=rb.x()andx>=rb.x()-PADDINGandy>=tl.y()andy<=tl.y()+PADDING):
#右上角
self.dir=self.Numbers.RIGHTTOP
self.setCursor(QCursor(Qt.SizeBDiagCursor))
elif(x<=tl.x()+PADDINGandx>=tl.x()):
#左边
self.dir=self.Numbers.LEFT
self.setCursor(QCursor(Qt.SizeHorCursor))
elif(x<=rb.x()andx>=rb.x()-PADDING):
#右边
self.dir=self.Numbers.RIGHT
self.setCursor(QCursor(Qt.SizeHorCursor))
elif(y>=tl.y()andy<=tl.y()+PADDING):
#上边
self.dir=self.Numbers.UP
self.setCursor(QCursor(Qt.SizeVerCursor))
elif(y<=rb.y()andy>=rb.y()-PADDING):
#下边
self.dir=self.Numbers.DOWN
self.setCursor(QCursor(Qt.SizeVerCursor))
else:
#默认
self.dir=self.Numbers.NONE
self.setCursor(QCursor(Qt.ArrowCursor))
defmouseReleaseEvent(self,event):
if(event.button()==Qt.LeftButton):
self.isLeftPressDown=False
if(self.dir!=self.Numbers.NONE):
self.releaseMouse()
self.setCursor(QCursor(Qt.ArrowCursor))
defmousePressEvent(self,event):
if(event.button()==Qt.LeftButton):
self.isLeftPressDown=True
if(self.dir!=self.Numbers.NONE):
self.mouseGrabber()
else:
self.dragPosition=event.globalPos()-self.frameGeometry().topLeft()
defmouseMoveEvent(self,event):
gloPoint=event.globalPos()
rect=self.rect()
tl=self.mapToGlobal(rect.topLeft())
rb=self.mapToGlobal(rect.bottomRight())
if(notself.isLeftPressDown):
self.region(gloPoint)
else:
if(self.dir!=self.Numbers.NONE):
rmove=QRect(tl,rb)
if(self.dir==self.Numbers.LEFT):
if(rb.x()-gloPoint.x()<=self.minimumWidth()):
rmove.setX(tl.x())
else:
rmove.setX(gloPoint.x())
elif(self.dir==self.Numbers.RIGHT):
printu"youbian"
rmove.setWidth(gloPoint.x()-tl.x())
elif(self.dir==self.Numbers.UP):
if(rb.y()-gloPoint.y()<=self.minimumHeight()):
rmove.setY(tl.y())
else:
rmove.setY(gloPoint.y())
elif(self.dir==self.Numbers.DOWN):
rmove.setHeight(gloPoint.y()-tl.y())
elif(self.dir==self.Numbers.LEFTTOP):
if(rb.x()-gloPoint.x()<=self.minimumWidth()):
rmove.setX(tl.x())
else:
rmove.setX(gloPoint.x())
if(rb.y()-gloPoint.y()<=self.minimumHeight()):
rmove.setY(tl.y())
else:
rmove.setY(gloPoint.y())
elif(self.dir==self.Numbers.RIGHTTOP):
rmove.setWidth(gloPoint.x()-tl.x())
rmove.setY(gloPoint.y())
elif(self.dir==self.Numbers.LEFTBOTTOM):
rmove.setX(gloPoint.x())
rmove.setHeight(gloPoint.y()-tl.y())
elif(self.dir==self.Numbers.RIGHTBOTTOM):
rmove.setWidth(gloPoint.x()-tl.x())
rmove.setHeight(gloPoint.y()-tl.y())
else:
pass
self.setGeometry(rmove)
else:
self.move(event.globalPos()-self.dragPosition)
event.accept()
if__name__=='__main__':
app=QApplication(sys.argv)
shadow=ShadowWidget()
shadow.show()
sys.exit(app.exec_())
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。