如何在PyQt5中使小部件随窗口缩放?

时间:2019-01-05 19:03:35

标签: python pyqt pyqt5

我正在尝试设置一个GUI,它将在PyQt5中包含多个页面。窗口的最小尺寸为800x600,但可以自定义。我希望窗口中的大多数(但不是全部)元素能够随其缩放。我已经有一个解决方案,但是我觉得它不是很优雅。

以下是800x600窗口的示例:

enter image description here

这是缩放后的另一个示例

enter image description here

我尝试使用QVBoxLayout,但是对于该系统,我无法设法保持此处的布局(并不是说这是不可能的),而是所有小部件都变得居中且宽度相同。稍后,我可能还会考虑在与某些现有小部件的y值相同的一侧添加小部件,这是我不确定如何处理盒子布局的另一件事

以下是相关代码:

class CreatePage(QWidget):
    def __init__(self, parent=None):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.homeBtn = QPushButton("Home", self)
        self.homeBtn.move(10, 10)

        self.frontLabel = QLabel("Front", self)
        self.frontLabel.setFont(QFont("Decorative", 20))

        self.frontEdit = QTextEdit(self)
        self.frontEdit.setFont(QFont("Decorative", 11))

        self.backLabel = QLabel("Back", self)
        self.backLabel.setFont(QFont("Decorative", 20))

        self.backEdit = QTextEdit(self)
        self.backEdit.setFont(QFont("Decorative", 11))

    def paintEvent(self, e):
        qp = QPainter()
        qp.setFont(QFont("Decorative", 20))

        size = self.size()
        h = size.height()
        w = size.width()

        frontW = qp.fontMetrics().width("Front")
        self.frontLabel.move((w/2) - (frontW/2) , h/15)
        #I use fontMetrics to determine the width of the text
        #I then use this information to centre the text

        self.frontEdit.move(50, h/15 + 40)
        self.frontEdit.resize(w-100, h/3)

        backW = qp.fontMetrics().width("Back")
        self.backLabel.move((w/2) - (backW/2), h/2)

        self.backEdit.move(50, h/2 + 40)
        self.backEdit.resize(w-100, h/3)

对于任何一般的草率表示歉意,我对PyQt和整体上的GUI编程都是陌生的。无论如何,我用于调整大小和移动小部件的公式是相当随意的。有谁知道实现此效果的更好方法?

1 个答案:

答案 0 :(得分:0)

尝试一下:

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore    import *
from PyQt5.QtGui     import *

class CreatePage(QWidget):
    def __init__(self, parent=None):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.homeBtn = QPushButton("Home") 

        self.frontLabel = QLabel("Front") 
        self.frontLabel.setFont(QFont("Decorative", 20))
        self.frontEdit = QTextEdit(placeholderText="frontEdit") 
        self.frontEdit.setFont(QFont("Decorative", 11))

        self.backLabel = QLabel("Back") 
        self.backLabel.setFont(QFont("Decorative", 20))
        self.backEdit = QTextEdit(placeholderText="backEdit") 
        self.backEdit.setFont(QFont("Decorative", 11))

        grid = QGridLayout()
        grid.addWidget(self.homeBtn,    0, 0, alignment=Qt.AlignTop | Qt.AlignLeft)
        grid.addWidget(self.frontLabel, 1, 0, alignment=Qt.AlignCenter)
        grid.addWidget(self.frontEdit,  2, 0)
        grid.addWidget(self.backLabel,  3, 0, alignment=Qt.AlignCenter)
        grid.addWidget(self.backEdit,   4, 0)

        self.setLayout(grid)

if __name__=="__main__":
    app = QApplication(sys.argv)
    myapp = CreatePage()
    myapp.show()
    sys.exit(app.exec_())

enter image description here