Pyqt实现无边框窗口拖动以及窗口大小改变实现无边框窗口拖动以及窗口大小改变
主要为大家详细介绍了Pyqt实现无边框窗口拖动及大小改变的方法，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
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
from PyQt4.Qt import *
import sys
PADDING=4
sys.setrecursionlimit(10000)
class ShadowWidget(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
def drawShadow(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
def enum(self,**enums):
return type('Enum', (), enums)
def region(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 >= x and tl.x() <= x and tl.y() + PADDING >= y and tl.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() - PADDING and x <= rb.x() and y >= rb.y() - PADDING and y <= rb.y()):
#右下角
self.dir = self.Numbers.RIGHTBOTTOM
self.setCursor(QCursor(Qt.SizeFDiagCursor))
elif(x <= tl.x() + PADDING and x >= tl.x() and y >= rb.y() - PADDING and y <= rb.y()):
#左下角
self.dir = self.Numbers.LEFTBOTTOM
self.setCursor(QCursor(Qt.SizeBDiagCursor))
elif(x <= rb.x() and x >= rb.x() - PADDING and y >= tl.y() and y <= tl.y() + PADDING):
#右上角
self.dir = self.Numbers.RIGHTTOP
self.setCursor(QCursor(Qt.SizeBDiagCursor))
elif(x <= tl.x() + PADDING and x >= tl.x()):
#左边
self.dir = self.Numbers.LEFT
self.setCursor(QCursor(Qt.SizeHorCursor))
elif( x <= rb.x() and x >= rb.x() - PADDING):
#右边
self.dir = self.Numbers.RIGHT
self.setCursor(QCursor(Qt.SizeHorCursor))
elif(y >= tl.y() and y <= tl.y() + PADDING):
#上边
self.dir = self.Numbers.UP
self.setCursor(QCursor(Qt.SizeVerCursor))
elif(y <= rb.y() and y >= 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))
def mouseReleaseEvent(self,event):
if(event.button() == Qt.LeftButton):
self.isLeftPressDown = False
if(self.dir != self.Numbers.NONE):
self.releaseMouse()
self.setCursor(QCursor(Qt.ArrowCursor))
def mousePressEvent(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()
def mouseMoveEvent(self,event):
gloPoint = event.globalPos()
rect = self.rect()
tl = self.mapToGlobal(rect.topLeft())
rb = self.mapToGlobal(rect.bottomRight())
if(not self.isLeftPressDown):
self.region(gloPoint)
else:
if(self.dir != self.Numbers.NONE):
rmove=QRect(tl, rb)
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