PyQt5实现仿QQ贴边隐藏功能的实例代码

此程序大致功能为：可变换颜色，贴边隐藏。

变换颜色思路

QPalette( [ˈpælət] 调色板)类相当于对话框或控件的调色板，它管理着控件或窗体的所有颜色信息，每个窗体或控件都包含一个QPalette对象，在显示时按照它的QPalette对象中对各部分各状态下的颜色的描述来进行绘制。

实现代码

def Painting(self):
 color = random.choice(["CCFFFF","CC6699","CC99FF","99CCFF"])
 palette1 = QPalette()
 palette1.setColor(self.backgroundRole(),
    QColor("#{}".format(color))) # 改变窗体颜色
 self.setPalette(palette1)

贴边隐藏思路

可以判断窗口的位置，当与边缘的距离小于某值时，再判断鼠标是否在窗口，判断是否隐藏窗口；
根据隐藏窗口的隐藏位置，获得某块区域，当鼠标在这个位置时，显示窗口。

实现代码

鼠标进入事件，调用hide_or_show判断是否该显示

def enterEvent(self, event):
 self.hide_or_show('show', event)

鼠标离开事件，调用hide_or_show判断是否该隐藏

def leaveEvent(self, event):
 self.hide_or_show('hide', event)

鼠标点击事件

def mousePressEvent(self, event):
 if event.button() == Qt.LeftButton:
  self.dragPosition = event.globalPos() - self.frameGeometry(
  ).topLeft()
  QApplication.postEvent(self, QEvent(174))
  event.accept()

捕捉鼠标移动事件

def mouseMoveEvent(self, event):
 if event.buttons() == Qt.LeftButton:
  try:
  self.move(event.globalPos() - self.dragPosition)
  event.accept()
  except:pass

判断是否该隐藏

def hide_or_show(self, mode, event):
 pos = self.frameGeometry().topLeft()
 if mode == 'show' and self.moved:
  if pos.x() + WINDOW_WEIGHT >= SCREEN_WEIGHT: # 右侧显示
  self.startAnimation(SCREEN_WEIGHT - WINDOW_WEIGHT + 2, pos.y())
  event.accept()
  self.moved = False
  elif pos.x() <= 0: # 左侧显示
  self.startAnimation(0,pos.y())
  event.accept()
  self.moved = False
  elif pos.y() <= 0: # 顶层显示
  self.startAnimation(pos.x(),0)
  event.accept()
  self.moved = False
 elif mode == 'hide':
  if pos.x() + WINDOW_WEIGHT >= SCREEN_WEIGHT: # 右侧隐藏
  self.startAnimation(SCREEN_WEIGHT - 2,pos.y())
  event.accept()
  self.moved = True
  elif pos.x() <= 2: # 左侧隐藏
  self.startAnimation(2 - WINDOW_WEIGHT,pos.y())
  event.accept()
  self.moved = True
  elif pos.y() <= 2: # 顶层隐藏
  self.startAnimation(pos.x(),2 - WINDOW_HEIGHT)
  event.accept()
  self.moved = True

将划入划出作为属性动画

def startAnimation(self,width,height):
 animation = QPropertyAnimation(self,b"geometry",self)
 startpos = self.geometry()
 animation.setDuration(200)
 newpos = QRect(width,height,startpos.width(),startpos.height())
 animation.setEndValue(newpos)
 animation.start()

完整代码

import sys,random
from PyQt5.QtGui import QPalette,QColor
from PyQt5.QtWidgets import QWidget,QVBoxLayout,QPushButton,\
 QDesktopWidget,QApplication
from PyQt5.QtCore import Qt,QRect,QEvent,QPoint
from PyQt5.Qt import QCursor,QPropertyAnimation

SCREEN_WEIGHT = 1920
SCREEN_HEIGHT = 1080
WINDOW_WEIGHT = 300
WINDOW_HEIGHT = 600
class Ui_Form(QWidget):
 def __init__(self):
 self.moved = False
 super(Ui_Form,self).__init__()
 self.setupUi()
 self.resize(WINDOW_WEIGHT, WINDOW_HEIGHT)
 self.show()
 def setupUi(self):
 self.setWindowFlags(Qt.FramelessWindowHint
    | Qt.WindowStaysOnTopHint
    | Qt.Tool) # 去掉标题栏
 self.widget = QWidget()
 self.Layout = QVBoxLayout(self.widget)
 self.Layout.setContentsMargins(0,0,0,0)
 self.setLayout(self.Layout)
 self.setWindowFlag(Qt.Tool)
 self.main_widget = QWidget()
 self.Layout.addWidget(self.main_widget)
 self.paint = QPushButton(self.main_widget)
 self.paint.setText("改变颜色")
 self.paint.move(QPoint(120,200))
 self.paint.clicked.connect(self.Painting)
 self.exit = QPushButton(self.main_widget)
 self.exit.setText(" 退出 ")
 self.exit.move(QPoint(120,400))
 self.exit.clicked.connect(lambda:exit(0))
 self.setStyleSheet('''
  QPushButton {
  color: rgb(137, 221, 255);
  background-color: rgb(37, 121, 255);
  border-style:none;
  border:1px solid #3f3f3f;
  padding:5px;
  min-height:20px;
  border-radius:15px;
  }
  ''')
 def Painting(self):
 color = random.choice(["CCFFFF","CC6699","CC99FF","99CCFF"])
 palette1 = QPalette()
 palette1.setColor(self.backgroundRole(),
    QColor("#{}".format(color))) # 改变窗体颜色
 self.setPalette(palette1)
 def enterEvent(self, event):
 self.hide_or_show('show', event)
 def leaveEvent(self, event):
 self.hide_or_show('hide', event)
 def mousePressEvent(self, event):
 if event.button() == Qt.LeftButton:
  self.dragPosition = event.globalPos() - self.frameGeometry(
  ).topLeft()
  QApplication.postEvent(self, QEvent(174))
  event.accept()
 def mouseMoveEvent(self, event):
 if event.buttons() == Qt.LeftButton:
  try:
  self.move(event.globalPos() - self.dragPosition)
  event.accept()
  except:pass
 #def mouseReleaseEvent(self, event):
 #self.moved = True
 #self.hide_or_show('show', event)
 def hide_or_show(self, mode, event):
 pos = self.frameGeometry().topLeft()
 if mode == 'show' and self.moved:
  if pos.x() + WINDOW_WEIGHT >= SCREEN_WEIGHT: # 右侧显示
  self.startAnimation(SCREEN_WEIGHT - WINDOW_WEIGHT + 2, pos.y())
  event.accept()
  self.moved = False
  elif pos.x() <= 0: # 左侧显示
  self.startAnimation(0,pos.y())
  event.accept()
  self.moved = False
  elif pos.y() <= 0: # 顶层显示
  self.startAnimation(pos.x(),0)
  event.accept()
  self.moved = False
 elif mode == 'hide':
  if pos.x() + WINDOW_WEIGHT >= SCREEN_WEIGHT: # 右侧隐藏
  self.startAnimation(SCREEN_WEIGHT - 2,pos.y())
  event.accept()
  self.moved = True
  elif pos.x() <= 2: # 左侧隐藏
  self.startAnimation(2 - WINDOW_WEIGHT,pos.y())
  event.accept()
  self.moved = True
  elif pos.y() <= 2: # 顶层隐藏
  self.startAnimation(pos.x(),2 - WINDOW_HEIGHT)
  event.accept()
  self.moved = True
 def startAnimation(self,width,height):
 animation = QPropertyAnimation(self,b"geometry",self)
 startpos = self.geometry()
 animation.setDuration(200)
 newpos = QRect(width,height,startpos.width(),startpos.height())
 animation.setEndValue(newpos)
 animation.start()
if __name__ == "__main__":
 app = QApplication(sys.argv)
 ui = Ui_Form()
 sys.exit(app.exec_())

总结

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