python 功能齐全的PyQt文本编辑器（http://thecodeinn.blogspot.ch/2013/07/fully-functional-pyqt-text-editor.html）移

Posted 2021-05-09

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

var = 0
f = ""
choiceStr = ""
cs = False
wwo = False
 
tt = True
tf = True
ts = True
 
 
class Find(QDialog):
    def __init__(self,parent = None):
        QDialog.__init__(self, parent)
         
        self.initUI()
 
    def initUI(self):
 
        self.lb1 = QLabel("Search for: ",self)
        self.lb1.setStyleSheet("font-size: 15px; ")
        self.lb1.move(10,10)
 
        self.te = QTextEdit(self)
        self.te.move(10,40)
        self.te.resize(250,25)
 
        self.src = QPushButton("Find",self)
        self.src.move(270,40)
 
        self.lb2 = QLabel("Replace all by: ",self)
        self.lb2.setStyleSheet("font-size: 15px; ")
        self.lb2.move(10,80)
 
        self.rp = QTextEdit(self)
        self.rp.move(10,110)
        self.rp.resize(250,25)
 
        self.rpb = QPushButton("Replace",self)
        self.rpb.move(270,110)
 
        self.opt1 = QCheckBox("Case sensitive",self)
        self.opt1.move(10,160)
        self.opt1.stateChanged.connect(self.CS)
         
        self.opt2 = QCheckBox("Whole words only",self)
        self.opt2.move(10,190)
        self.opt2.stateChanged.connect(self.WWO)
 
        self.close = QPushButton("Close",self)
        self.close.move(270,220)
        self.close.clicked.connect(self.Close)
         
         
        self.setGeometry(300,300,360,250)
 
    def CS(self, state):
        global cs
 
        if state == QtCore.Qt.Checked:
            cs = True
        else:
            cs = False
 
    def WWO(self, state):
        global wwo
        print(wwo)
 
        if state == QtCore.Qt.Checked:
            wwo = True
        else:
            wwo = False
 
    def Close(self):
        self.hide()
 
class Date(QDialog):
    def __init__(self,parent = None):
        QDialog.__init__(self, parent)
         
        self.initUI()
 
    def initUI(self):
 
        self.form = QComboBox(self)
        self.form.move(10,10)
        self.form.addItem(time.strftime("%d.%m.%Y"))
        self.form.addItem(time.strftime("%A, %d. %B %Y"))
        self.form.addItem(time.strftime("%d. %B %Y"))
        self.form.addItem(time.strftime("%d %m %Y"))
        self.form.addItem(time.strftime("%X"))
        self.form.addItem(time.strftime("%x"))
        self.form.addItem(time.strftime("%H:%M"))
        self.form.addItem(time.strftime("%A, %d. %B %Y %H:%M"))
        self.form.addItem(time.strftime("%d.%m.%Y %H:%M"))
        self.form.addItem(time.strftime("%d. %B %Y %H:%M"))
 
        self.form.activated[str].connect(self.handleChoice)
         
        self.ok = QPushButton("Insert",self)
        self.ok.move(180,10)
 
        self.cancel = QPushButton("Cancel",self)
        self.cancel.move(180,40)
        self.cancel.clicked.connect(self.Cancel)
 
        self.setGeometry(300,300,280,70)
 
    def handleChoice(self,choice):
        global choiceStr
 
        choiceStr = choice
 
        print(choiceStr)
 
    def Cancel(self):
        self.close()
         
class Main(QMainWindow):
 
    def __init__(self):
        QMainWindow.__init__(self,None)
        self.initUI()
 
    def initUI(self):
 
#------- Toolbar --------------------------------------
 
#-- Upper Toolbar -- 
 
        newAction = QAction(QIcon("icons/new.png"),"New",self)
        newAction.setShortcut("Ctrl+N")
        newAction.setStatusTip("Create a new document from scratch.")
        newAction.triggered.connect(self.New)
 
        openAction = QAction(QIcon("icons/open.png"),"Open file",self)
        openAction.setStatusTip("Open existing document")
        openAction.setShortcut("Ctrl+O")
        openAction.triggered.connect(self.Open)
 
        saveAction = QAction(QIcon("icons/save.png"),"Save",self)
        saveAction.setStatusTip("Save document")
        saveAction.setShortcut("Ctrl+S")
        saveAction.triggered.connect(self.Save)
 
        previewAction = QAction(QIcon("icons/preview.png"),"Page view",self)
        previewAction.setStatusTip("Preview page before printing")
        previewAction.setShortcut("Ctrl+Shift+P")
        previewAction.triggered.connect(self.PageView)
 
        findAction = QAction(QIcon("icons/find.png"),"Find",self)
        findAction.setStatusTip("Find words in your document")
        findAction.setShortcut("Ctrl+F")
        findAction.triggered.connect(self.Find)
 
        cutAction = QAction(QIcon("icons/cut.png"),"Cut to clipboard",self)
        cutAction.setStatusTip("Delete and copy text to clipboard")
        cutAction.setShortcut("Ctrl+X")
        cutAction.triggered.connect(self.Cut)
 
        copyAction = QAction(QIcon("icons/copy.png"),"Copy to clipboard",self)
        copyAction.setStatusTip("Copy text to clipboard")
        copyAction.setShortcut("Ctrl+C")
        copyAction.triggered.connect(self.Copy)
 
        pasteAction = QAction(QIcon("icons/paste.png"),"Paste from clipboard",self)
        pasteAction.setStatusTip("Paste text from clipboard")
        pasteAction.setShortcut("Ctrl+V")
        pasteAction.triggered.connect(self.Paste)
 
        undoAction = QAction(QIcon("icons/undo.png"),"Undo last action",self)
        undoAction.setStatusTip("Undo last action")
        undoAction.setShortcut("Ctrl+Z")
        undoAction.triggered.connect(self.Undo)
 
        redoAction = QAction(QIcon("icons/redo.png"),"Redo last undone thing",self)
        redoAction.setStatusTip("Redo last undone thing")
        redoAction.setShortcut("Ctrl+Y")
        redoAction.triggered.connect(self.Redo)
 
        dtAction = QAction(QIcon("icons/datetime.png"),"Insert current date/time",self)
        dtAction.setStatusTip("Insert current date/time")
        dtAction.setShortcut("Ctrl+D")
        dtAction.triggered.connect(self.DateTime)
 
        printAction = QAction(QIcon("icons/print.png"),"Print document",self)
        printAction.setStatusTip("Print document")
        printAction.setShortcut("Ctrl+P")
        printAction.triggered.connect(self.Print)
 
        self.toolbar = self.addToolBar("Options")
        self.toolbar.addAction(newAction)
        self.toolbar.addAction(openAction)
        self.toolbar.addAction(saveAction)
        self.toolbar.addSeparator()
        self.toolbar.addAction(printAction)
        #self.toolbar.addAction(pdfAction)
        self.toolbar.addAction(previewAction)
        self.toolbar.addSeparator()
        self.toolbar.addAction(findAction)
        self.toolbar.addAction(cutAction)
        self.toolbar.addAction(copyAction)
        self.toolbar.addAction(pasteAction)
        self.toolbar.addAction(undoAction)
        self.toolbar.addAction(redoAction)
        self.toolbar.addSeparator()
        self.toolbar.addAction(dtAction)
        self.toolbar.addSeparator()
 
        self.addToolBarBreak()
 
# -- Lower Toolbar -- 
 
        self.fontFamily = QFontComboBox(self)
        self.fontFamily.currentFontChanged.connect(self.FontFamily)
 
        fontSize = QComboBox(self)
        fontSize.setEditable(True)
        fontSize.setMinimumContentsLength(3)
        fontSize.activated.connect(self.FontSize)
        flist = [6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,26,28,32,36,40,44,48,
                 54,60,66,72,80,88,96]
         
        for i in flist:
            fontSize.addItem(str(i))
 
        fontColor = QAction(QIcon("icons/color.png"),"Change font color",self)
        fontColor.triggered.connect(self.FontColor)
 
        boldAction = QAction(QIcon("icons/bold.png"),"Bold",self)
        boldAction.triggered.connect(self.Bold)
         
        italicAction = QAction(QIcon("icons/italic.png"),"Italic",self)
        italicAction.triggered.connect(self.Italic)
         
        underlAction = QAction(QIcon("icons/underl.png"),"Underline",self)
        underlAction.triggered.connect(self.Underl)
 
        alignLeft = QAction(QIcon("icons/alignLeft.png"),"Align left",self)
        alignLeft.triggered.connect(self.alignLeft)
 
        alignCenter = QAction(QIcon("icons/alignCenter.png"),"Align center",self)
        alignCenter.triggered.connect(self.alignCenter)
 
        alignRight = QAction(QIcon("icons/alignRight.png"),"Align right",self)
        alignRight.triggered.connect(self.alignRight)
 
        alignJustify = QAction(QIcon("icons/alignJustify.png"),"Align justify",self)
        alignJustify.triggered.connect(self.alignJustify)
 
        indentAction = QAction(QIcon("icons/indent.png"),"Indent Area",self)
        indentAction.setShortcut("Ctrl+Tab")
        indentAction.triggered.connect(self.Indent)
 
        dedentAction = QAction(QIcon("icons/dedent.png"),"Dedent Area",self)
        dedentAction.setShortcut("Shift+Tab")
        dedentAction.triggered.connect(self.Dedent)
 
        backColor = QAction(QIcon("icons/backcolor.png"),"Change background color",self)
        backColor.triggered.connect(self.FontBackColor)
 
        bulletAction = QAction(QIcon("icons/bullet.png"),"Insert Bullet List",self)
        bulletAction.triggered.connect(self.BulletList)
 
        numberedAction = QAction(QIcon("icons/number.png"),"Insert Numbered List",self)
        numberedAction.triggered.connect(self.NumberedList)
 
        space1 = QLabel("  ",self)
        space2 = QLabel(" ",self)
        space3 = QLabel(" ",self)
         
 
        self.formatbar = self.addToolBar("Format")
        self.formatbar.addWidget(self.fontFamily)
        self.formatbar.addWidget(space1)
        self.formatbar.addWidget(fontSize)
        self.formatbar.addWidget(space2)
         
        self.formatbar.addSeparator()
 
        self.formatbar.addAction(fontColor)
        self.formatbar.addAction(backColor)
 
        self.formatbar.addSeparator()
         
        self.formatbar.addAction(boldAction)
        self.formatbar.addAction(italicAction)
        self.formatbar.addAction(underlAction)
         
        self.formatbar.addSeparator()
 
        self.formatbar.addAction(alignLeft)
        self.formatbar.addAction(alignCenter)
        self.formatbar.addAction(alignRight)
        self.formatbar.addAction(alignJustify)
 
        self.formatbar.addSeparator()
 
        self.formatbar.addAction(indentAction)
        self.formatbar.addAction(dedentAction)
        self.formatbar.addAction(bulletAction)
        self.formatbar.addAction(numberedAction)
         
#------- Text Edit -----------------------------------
 
        self.text = QTextEdit(self)
        self.text.setTabStopWidth(12)
        self.setCentralWidget(self.text)
 
#------- Statusbar ------------------------------------
         
        self.status = self.statusBar()
 
        self.text.cursorPositionChanged.connect(self.CursorPosition)
 
 
#---------Window settings --------------------------------
         
        self.setGeometry(100,100,700,700)
        self.setWindowTitle("Scriber")
        self.setWindowIcon(QIcon("icons/feather.png"))
        self.show()
 
#------- Menubar --------------------------------------
         
        menubar = self.menuBar()
        file = menubar.addMenu("File")
        edit = menubar.addMenu("Edit")
        view = menubar.addMenu("View")
 
        file.addAction(newAction)
        file.addAction(openAction)
        file.addAction(saveAction)
        file.addAction(printAction)
        file.addAction(previewAction)
 
        edit.addAction(undoAction)
        edit.addAction(redoAction)
        edit.addAction(cutAction)
        edit.addAction(copyAction)
        edit.addAction(findAction)
        edit.addAction(dtAction)
 
        toggleTool = QAction("Toggle Toolbar",self,checkable=True)
        toggleTool.triggered.connect(self.handleToggleTool)
         
        toggleFormat = QAction("Toggle Formatbar",self,checkable=True)
        toggleFormat.triggered.connect(self.handleToggleFormat)
         
        toggleStatus = QAction("Toggle Statusbar",self,checkable=True)
        toggleStatus.triggered.connect(self.handleToggleStatus)
 
        view.addAction(toggleTool)
        view.addAction(toggleFormat)
        view.addAction(toggleStatus)
 
    def handleToggleTool(self):
        global tt
 
        if tt == True:
            self.toolbar.hide()
            tt = False
        else:
            self.toolbar.show()
            tt = True
 
    def handleToggleFormat(self):
        global tf
 
        if tf == True:
            self.formatbar.hide()
            tf = False
        else:
            self.formatbar.show()
            tf = True
 
    def handleToggleStatus(self):
        global ts
 
        if ts == True:
            self.status.hide()
            ts = False
        else:
            self.status.show()
            ts = True
             
#-------- Toolbar slots -----------------------------------
 
    def New(self):
        self.text.clear()
 
    def Open(self):
        filename = QFileDialog.getOpenFileName(self, 'Open File')
        f = open(filename, 'r')
        filedata = f.read()
        self.text.setText(filedata)
        f.close()
 
    def Save(self):
        filename = QFileDialog.getSaveFileName(self, 'Save File')
        f = open(filename, 'w')
        filedata = self.text.toPlainText()
        f.write(filedata)
        f.close()
 
    def PageView(self):
        preview = QPrintPreviewDialog()
        preview.paintRequested.connect(self.PaintPageView)
        preview.exec_()
 
    def Print(self):
        dialog = QPrintDialog()
        if dialog.exec_() == QDialog.Accepted:
            self.text.document().print_(dialog.printer())
 
    def PDF(self):
        printer = QPrinter()
        printer.setOutputFormat(printer.NativeFormat)
         
        dialog = QPrintDialog(printer)
        dialog.setOption(dialog.PrintToFile)
        if dialog.exec_() == QDialog.Accepted:
            self.text.document().print_(dialog.printer())
         
         
    def PaintPageView(self, printer):
        self.text.print_(printer)
 
    def Find(self):
        global f
         
        find = Find(self)
        find.show()
 
        def handleFind():
 
            f = find.te.toPlainText()
            print(f)
             
            if cs == True and wwo == False:
                flag = QTextDocument.FindBackward and QTextDocument.FindCaseSensitively
                 
            elif cs == False and wwo == False:
                flag = QTextDocument.FindBackward
                 
            elif cs == False and wwo == True:
                flag = QTextDocument.FindBackward and QTextDocument.FindWholeWords
                 
            elif cs == True and wwo == True:
                flag = QTextDocument.FindBackward and QTextDocument.FindCaseSensitively and QTextDocument.FindWholeWords
             
            self.text.find(f,flag)
 
        def handleReplace():
            f = find.te.toPlainText()
            r = find.rp.toPlainText()
 
            text = self.text.toPlainText()
             
            newText = text.replace(f,r)
 
            self.text.clear()
            self.text.append(newText)
         
        find.src.clicked.connect(handleFind)
        find.rpb.clicked.connect(handleReplace)
 
 
    def Undo(self):
        self.text.undo()
 
    def Redo(self):
        self.text.redo()
 
    def Cut(self):
        self.text.cut()
 
    def Copy(self):
        self.text.copy()
 
    def Paste(self):
        self.text.paste()
 
    def DateTime(self):
 
        date = Date(self)
        date.show()
 
        date.ok.clicked.connect(self.insertDate)
 
    def insertDate(self):
        global choiceStr
        print(choiceStr)
        self.text.append(choiceStr)
         
    def CursorPosition(self):
        line = self.text.textCursor().blockNumber()
        col = self.text.textCursor().columnNumber()
        linecol = ("Line: "+str(line)+" | "+"Column: "+str(col))
        self.status.showMessage(linecol)
 
    def FontFamily(self,font):
        font = QFont(self.fontFamily.currentFont())
        self.text.setCurrentFont(font)
 
    def FontSize(self, fsize):
        size = (int(fsize))
        self.text.setFontPointSize(size)
 
    def FontColor(self):
        c = QColorDialog.getColor()
 
        self.text.setTextColor(c)
         
    def FontBackColor(self):
        c = QColorDialog.getColor()
 
        self.text.setTextBackgroundColor(c)
 
    def Bold(self):
        w = self.text.fontWeight()
        if w == 50:
            self.text.setFontWeight(QFont.Bold)
        elif w == 75:
            self.text.setFontWeight(QFont.Normal)
         
    def Italic(self):
        i = self.text.fontItalic()
         
        if i == False:
            self.text.setFontItalic(True)
        elif i == True:
            self.text.setFontItalic(False)
         
    def Underl(self):
        ul = self.text.fontUnderline()
 
        if ul == False:
            self.text.setFontUnderline(True) 
        elif ul == True:
            self.text.setFontUnderline(False)
             
    def lThrough(self):
        lt = QFont.style()
 
        print(lt)
 
    def alignLeft(self):
        self.text.setAlignment(Qt.AlignLeft)
 
    def alignRight(self):
        self.text.setAlignment(Qt.AlignRight)
 
    def alignCenter(self):
        self.text.setAlignment(Qt.AlignCenter)
 
    def alignJustify(self):
        self.text.setAlignment(Qt.AlignJustify)
 
    def Indent(self):
        tab = "\t"
        cursor = self.text.textCursor()
 
        start = cursor.selectionStart()
        end = cursor.selectionEnd()
 
        cursor.setPosition(end)
        cursor.movePosition(cursor.EndOfLine)
        end = cursor.position()
 
        cursor.setPosition(start)
        cursor.movePosition(cursor.StartOfLine)
        start = cursor.position()
 
 
        while cursor.position() < end:
            global var
 
            print(cursor.position(),end)
             
            cursor.movePosition(cursor.StartOfLine)
            cursor.insertText(tab)
            cursor.movePosition(cursor.Down)
            end += len(tab)
 
            '''if cursor.position() == end:
                var +=1
 
            if var == 2:
                break'''
             
             
 
    def Dedent(self):
        tab = "\t"
        cursor = self.text.textCursor()
 
        start = cursor.selectionStart()
        end = cursor.selectionEnd()
 
        cursor.setPosition(end)
        cursor.movePosition(cursor.EndOfLine)
        end = cursor.position()
 
        cursor.setPosition(start)
        cursor.movePosition(cursor.StartOfLine)
        start = cursor.position()
 
 
        while cursor.position() < end:
            global var
             
            cursor.movePosition(cursor.StartOfLine)
            cursor.deleteChar()
            cursor.movePosition(cursor.EndOfLine)
            cursor.movePosition(cursor.Down)
            end -= len(tab)
 
            '''if cursor.position() == end:
                var +=1
 
            if var == 2:
                break'''
 
    def BulletList(self):
        print("bullet connects!")
        self.text.insertHtml("<ul><li> ...</li></ul>")
 
    def NumberedList(self):
        print("numbered connects!")
        self.text.insertHtml("<ol><li> ...</li></ol>")
          
def main():
    app = QApplication(sys.argv)
    main= Main()
    main.show()
 
    sys.exit(app.exec_())
 
if __name__ == "__main__":
    main()