将窗口拖动到边缘以调整大小

编程问答 2022-08-15

问题描述

我正在开发QGIS插件，正在使用QtCreator。我想实现一个允许用户将窗口拖动到屏幕边缘以调整其大小的功能（例如普通窗口）。我的设置是多屏桌面，我想到了以下代码：

from PyQt5 import QtCore,QtGui
tracking = False
class Window(QtGui.QWidget):

def __init__(self):
    super(Window,self).__init__()
    self.timer = QtCore.QTimer(self)
    self.timer.setInterval(50)
    self.timer.timeout.connect(self.Resize)
    self.timer.start()
    self.cursor = None
    tracking = True

def Resize(self):
    global tracking

    frameGm = self.frameGeometry()
    screen = QApplication.desktop().screenNumber(QApplication.desktop().cursor().pos())
    desktop_size = QApplication.desktop().availableGeometry(screen)
    topLeftPoint = QApplication.desktop().availableGeometry(screen).topLeft()
    topRightPoint = QApplication.desktop().availableGeometry(screen).topRight()

这是在触摸屏幕之一的边缘时调整窗口的大小：

    if screen == 0 and tracking == True:
        if self.y()== 0:
            frameGm.movetopLeft(topLeftPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width(),desktop_size.height())
            tracking = False             
        elif self.x() <= 0 :
            frameGm.movetopLeft(topLeftPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width()/2,desktop_size.height())
            tracking = False
        elif self.x()<= desktop_size.width() and self.x()+self.width() >= desktop_size.width() :  
            frameGm.movetopRight(topRightPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width()/2,desktop_size.height())
            tracking = False 

    if screen == 1 and tracking == True : 
        if self.y() == 0:
            frameGm.movetopLeft(topLeftPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width(),desktop_size.height())
            tracking = False  
        elif self.x() <= QApplication.desktop().availableGeometry(screen-1).width() and self.x()+self.width() >= QApplication.desktop().availableGeometry(screen-1).width() :
            frameGm.movetopLeft(topLeftPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width()/2,desktop_size.height())
            tracking = False
        elif self.x()+self.width() >= desktop_size.width()+QApplication.desktop().availableGeometry(screen-1).width() :
            frameGm.movetopRight(topRightPoint)
            self.move(frameGm.topLeft())
            self.resize(desktop_size.width()/2,desktop_size.height())
            tracking = False

以下部分将调整大小以恢复到正常大小：

    if self.width() == desktop_size.width() and self.height() == desktop_size.height() and self.y()!=0:
        self.resize(200,200)
        tracking = True 
    if self.width() == desktop_size.width()/2 and self.height() == desktop_size.height() and self.x()>0 and self.x()+self.width()<desktop_size.width():
        self.resize(200,200)
        tracking = True
    if self.width() == desktop_size.width()/2 and self.height() == desktop_size.height() and self.x()> QApplication.desktop().availableGeometry(screen-1).width() and self.x()+self.width()<desktop_size.width()+QApplication.desktop().availableGeometry(screen-1).width():            
        self.resize(200,200)
        tracking = True

    elif tracking == False and screen == QApplication.desktop().screenNumber(self.pos()):
        if self.width() != desktop_size.width() and self.height() != desktop_size.height() and self.width() != desktop_size.width()/2:
            tracking=True

if __name__ == '__main__':

import sys
app = QtGui.QApplication(sys.argv)
window = Window()
window.setGeometry(500,500,200,200)
window.show()
sys.exit(app.exec_())

我的问题是：窗口确实会调整大小，但是在左侧进行操作时，屏幕和窗口之间会有间隙。另外，在屏幕之间的交界处使用此代码似乎不起作用。我还想调整窗口的大小，例如窗口的底部比任务栏的上方。 有人可以帮我优化它吗？

解决方法

这很简单。您需要做的就是向小部件添加网格。您可以在添加小部件之前从QtCreator添加它，也可以在代码中将其添加为grid = QGridLayout(); grid.addWidget(name_of_the_widget,row,col);

pyqt5python-3.xqgisqt