PyQt5的学习之路(六)

对话框

#! /usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLineEdit, QInputDialog, QPushButton

class Myform(QWidget):

    def __init__(self):

        super(Myform, self).__init__()
        self.initUI()

    def initUI(self):

        self.btn = QPushButton('Dialog', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)

        self.le = QLineEdit(self)
        self.le.move(130, 20)

        self.move(300, 300)
        self.resize(300, 200)
        self.setWindowTitle('dialog')
        self.show()

    def showDialog(self):

        # 返回值:文本内容和一个布尔值,参数:self, 对话框标题, 提示内容
        text, ok = QInputDialog.getText(self, 'Input Dialog', 'Enter your name:')

        if ok:
            self.le.setText(str(text.encode('utf-8')))

if __name__ == '__main__':

    app = QApplication(sys.argv)
    w = Myform()
    sys.exit(app.exec_())

颜色选择器

#! /usr/bin/python
# -*- coding: utf-8 -*-


import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QFrame, QColorDialog
from PyQt5.QtGui import QColor

class Myform(QWidget):

    def __init__(self):

        super(Myform, self).__init__()
        self.initUI()

    def initUI(self):

        col = QColor(100, 100, 123)

        self.btn = QPushButton('dialog', self)
        self.btn.move(100, 100)

        self.btn.clicked.connect(self.showDialog)

        # 初始化QFrame的颜色
        self.frm = QFrame(self)
        self.frm.setStyleSheet("QWidget {background-color: %s}" % col.name())

        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('colordialog')
        self.show()

    def showDialog(self):

        col = QColorDialog.getColor()    # ColorPicker

        if col.isValid():   # 当点击Ok时col.isValid()为True,点击Cancel或关闭为False

            self.frm.setStyleSheet("QWidget { background-color: %s}" % col.name())

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = Myform()
    sys.exit(app.exec_())

字体选择器

#! /usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QVBoxLayout, QSizePolicy, QLabel, QFontDialog


class Myform(QWidget):

    def __init__(self):

        super(Myform, self).__init__()
        self.initUI()

    def initUI(self):

        vbox = QVBoxLayout()

        btn = QPushButton('Dialog', self)
        btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)   # 固定按钮大小

        btn.move(20, 20)

        vbox.addWidget(btn)

        btn.clicked.connect(self.showDialog)

        self.lbl = QLabel('Font 字体', self)
        self.lbl.move(130, 20)

        vbox.addWidget(self.lbl)
        self.setLayout(vbox)

        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('fontdialog')
        self.show()

    def showDialog(self):

        font, ok = QFontDialog.getFont()    # FontPicker
        if ok:
            self.lbl.setFont(font)

if __name__ == '__main__':

    app = QApplication(sys.argv)
    w = Myform()
    sys.exit(app.exec_())

文件选择器

#! /usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QTextEdit, QAction
from PyQt5.QtGui import QIcon


class Myform(QMainWindow):

    def __init__(self):

        super(Myform, self).__init__()
        self.initUI()

    def initUI(self):

        self.textEdit = QTextEdit()
        self.setCentralWidget(self.textEdit)
        self.statusBar()


        openFile = QAction(QIcon('1.jpg'), 'Open', self)
        openFile.setStatusTip('Open new File')
        openFile.setShortcut('Ctrl+O')
        openFile.triggered.connect(self.showDialog)

        toolbar = self.addToolBar('Openfile')
        toolbar.addAction(openFile)

        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('filedialog')
        self.show()

    def showDialog(self):

        fname = QFileDialog.getOpenFileName(self, 'Open file', '/home/linux')   #FilePicker

        if fname[0]:
            with open(fname[0], 'r') as f:
                data = f.read()
                self.textEdit.setText(data)


if __name__ == '__main__':

    app = QApplication(sys.argv)
    w = Myform()
    sys.exit(app.exec_())