PyQt5实现仿QQ贴边隐藏功能！有点意思！

此程序大致功能为：可变换颜色，贴边隐藏。

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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_())

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