[[uop:editor]]
Editor s obarvováním a doplňováním
from __future__ import print_function import sys, subprocess try : from PyQt5.QtCore import * from PyQt5.QtGui import * from PyQt5.QtWidgets import * print ("using PyQt5") use_qt5 = True except : from PyQt4.QtCore import * from PyQt4.QtGui import * print ("using PyQt4") use_qt5 = False # Windows: pip3 install PyQt5 # Debian, Ubuntu: apt-get install python3-pyqt5 # Fedora: dnf install python3-qt5 # ArchLinux: pacman -S python-pyqt5 # -------------------------------------------------------------------------- if sys.version_info >= (3,) : use_python3 = True else : use_python3 = False use_new_api = use_python3 or use_qt5 def dialog_to_str (s) : # get file name from open file dialog results if use_new_api : return s[0] else : return str (s) def bytearray_to_str (b) : if use_python3 : return str (b, "ascii", errors="ignore") else : return str (b) # -------------------------------------------------------------------------- def isLetter (c) : return c >= 'A' and c <= 'Z' or c >= 'a' and c <= 'z' or c == '_' def isDigit (c) : return c >= '0' and c <= '9' def isLetterOrDigit (c) : return c >= 'A' and c <= 'Z' or c >= 'a' and c <= 'z' or c == '_' or c >= '0' and c <= '9' class Highlighter (QSyntaxHighlighter) : def __init__ (self, parent = None) : super (Highlighter, self).__init__ (parent) self.keywordFormat = QTextCharFormat () self.keywordFormat.setForeground (QColor ("darkRed")) self.identifierFormat = QTextCharFormat () self.identifierFormat.setForeground (QColor ("darkBrown")) self.qidentifierFormat = QTextCharFormat () self.qidentifierFormat.setForeground (QColor ("green")) self.numberFormat = QTextCharFormat () self.numberFormat.setForeground (QColor ("lightBlue")) self.characterFormat = QTextCharFormat () self.characterFormat.setForeground (QColor ("cornflowerblue")) self.stringFormat = QTextCharFormat () self.stringFormat.setForeground (QColor ("blue")) self.commentFormat = QTextCharFormat () self.commentFormat.setForeground (QColor ("gray")) self.keywords = ["if", "else", "for", "while", "return", "using", "namespace"]; def highlightBlock (self, text) : cnt = len (text) inx = 0 inside_comment = self.previousBlockState () == 1 start_comment = 0 while inx < cnt : if inside_comment : if inx == 0 : inx = 1 while inx < cnt and (text [inx-1] != '*' or text [inx] != '/') : inx = inx + 1 if inx < cnt: inx = inx + 1 self.setFormat (start_comment, inx-start_comment, self.commentFormat) inside_comment = False else : while inx < cnt and text [inx] <= ' ' : inx = inx + 1 start = inx if inx < cnt : c = text [inx] if isLetter (c) : name = "" while inx < cnt and isLetterOrDigit (text [inx]) : name = name + text [inx] inx = inx + 1 if c == 'Q' : self.setFormat (start, inx-start, self.qidentifierFormat) elif name in self.keywords : self.setFormat (start, inx-start, self.keywordFormat) else : self.setFormat (start, inx-start, self.identifierFormat) elif isDigit (c) : while inx < cnt and isDigit (text [inx]) : inx = inx + 1 self.setFormat (start, inx-start, self.numberFormat) elif c == '"' : inx = inx + 1 while inx < cnt and text [inx] != '"' : inx = inx + 1 inx = inx + 1 self.setFormat (start, inx-start, self.stringFormat) elif c == "'" : inx = inx + 1 while inx < cnt and text [inx] != "'" : inx = inx + 1 inx = inx + 1 self.setFormat (start, inx-start, self.characterFormat) elif c == '/' : inx = inx + 1 if inx < cnt and text [inx] == '/' : inx = cnt # end of line self.setFormat (start, inx-start, self.commentFormat) elif inx < cnt and text [inx] == '*' : inx = inx + 1 # skip asterisk inside_comment = True start_comment = inx - 2 # back to slash else : inx = inx + 1 if inside_comment : self.setFormat (start_comment, inx-start_comment, self.commentFormat) self.setCurrentBlockState (1) else : self.setCurrentBlockState (0) # -------------------------------------------------------------------------- class CompletionTextEdit (QTextEdit) : def __init__ (self, parent = None) : super (CompletionTextEdit, self).__init__ (parent) self.win = None self.completer = None self.minLength = 1 self.automatic_completion = False # self.automatic_completion == False ... popup is displayed only when Ctrl+Space is pressed localList = [ ] localCompleter = QCompleter (localList, self) self.setCompleter (localCompleter, filtered = True) def setCompleter (self, completer, filtered = False) : if self.completer : # self.disconnect (self.completer, SIGNAL ("activated(const QString&)"), self.insertCompletion) self.completer.activated.disconnect (self.insertCompletion) if completer == None : return completer.setWidget (self) if filtered : completer.setCompletionMode (QCompleter.PopupCompletion) else : completer.setCompletionMode (QCompleter.UnfilteredPopupCompletion) completer.setCaseSensitivity (Qt.CaseInsensitive) self.completer = completer # self.connect (self.completer, SIGNAL ("activated(const QString&)"), self.insertCompletion) self.completer.activated.connect (self.insertCompletion) def insertCompletion (self, completion) : if self.completer.widget() == self : tc = self.textCursor () if use_new_api : extra = len (completion) - len (self.completer.completionPrefix()) else : extra = completion.length() - self.completer.completionPrefix().length() if extra != 0 : tc.movePosition (QTextCursor.Left) tc.movePosition (QTextCursor.EndOfWord) if use_new_api : tc.insertText (completion [-extra : ]) else : tc.insertText (completion.right (extra)) self.setTextCursor (tc) def textUnderCursor (self) : tc = self.textCursor () tc.select (QTextCursor.WordUnderCursor) return tc.selectedText () def focusInEvent (self, event) : if self.completer : self.completer.setWidget (self); QTextEdit.focusInEvent (self, event) def focusOutEvent (self, event) : QTextEdit.focusOutEvent (self, event) def keyPressEvent (self, event) : if self.completer != None and self.completer.popup().isVisible() : if event.key () in ( Qt.Key_Enter, Qt.Key_Return, Qt.Key_Escape, Qt.Key_Tab, Qt.Key_Backtab) : event.ignore () return mask = Qt.ShiftModifier | Qt.ControlModifier | Qt.AltModifier | Qt.MetaModifier mod = int (event.modifiers () & mask) isShortcut = mod == Qt.ControlModifier and event.key () == Qt.Key_Space # Ctrl + Space if (self.completer == None or not isShortcut) : QTextEdit.keyPressEvent (self, event) # do not process the shortcut when we have a completer if not self.automatic_completion : return ctrlOrShift = mod in (Qt.ControlModifier, Qt.ShiftModifier) if self.completer == None or (ctrlOrShift and event.text () == "") : # unicode has not isEmpty method # ctrl or shift key on it's own return eow = "~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=" # end of word if not use_new_api : eow = QString (eow) hasModifier = ((event.modifiers () != Qt.NoModifier) and not ctrlOrShift) # completionList = [ ] completionList = self.getCompletionList () if len (completionList) == 0 : completionList = [ "alpha", "beta", "gamma", "delta" ] model = QStringListModel (completionList, self.completer) self.completer.setModel (model) completionPrefix = self.textUnderCursor () if use_new_api : if (not isShortcut and (hasModifier or event.text () == "" or len (completionPrefix) < self.minLength or event.text()[-1] in eow )) : self.completer.popup ().hide () return else : if (not isShortcut and (hasModifier or event.text ().isEmpty () or completionPrefix.length () < self.minLength or eow.contains (event.text().right(1)) )) : self.completer.popup ().hide () return if (completionPrefix != self.completer.completionPrefix ()) : self.completer.setCompletionPrefix (completionPrefix) popup = self.completer.popup () popup.setCurrentIndex (self.completer.completionModel ().index (0,0)) cr = self.cursorRect () cr.setWidth (self.completer.popup ().sizeHintForColumn (0) + self.completer.popup ().verticalScrollBar ().sizeHint ().width ()) self.completer.complete (cr) # popup it def getCompletionList (self) : return [ "alpha", "beta", "gamma" ] # http://doc.qt.io/qt-5/qtwidgets-tools-customcompleter-example.html # http://rowinggolfer.blogspot.cz/2010/08/qtextedit-with-autocompletion-using.html # -------------------------------------------------------------------------- class Window (QMainWindow) : def __init__ (self, parent = None) : super (Window, self).__init__ (parent) # variables self.fileName = "" # user interface self.edit = CompletionTextEdit () self.edit.setLineWrapMode (QTextEdit.NoWrap) self.highlighter = Highlighter (self.edit.document ()) # important: keep reference to highlighter self.output = QTextEdit () self.output.setLineWrapMode (QTextEdit.NoWrap) splitter = QSplitter (self) splitter.addWidget (self.edit) splitter.addWidget (self.output) splitter.setOrientation (Qt.Vertical) splitter.setStretchFactor (0, 3) splitter.setStretchFactor (1, 1) self.setCentralWidget (splitter) # status bar ver = sys.version_info inf = str (ver[0]) + "." + str (ver[1]) + "." + str (ver[2]) self.statusBar().showMessage ("Python " + inf + ", Qt " + qVersion ()) # menu fileMenu = self.menuBar().addMenu ("&File") act = QAction ("&Open...", self) act.setShortcut ("Ctrl+O") act.triggered.connect (self.openFile) fileMenu.addAction (act) act = QAction ("&Save...", self) act.setShortcut ("Ctrl+S") act.triggered.connect (self.saveFile) fileMenu.addAction (act) act = QAction ("&Quit", self) act.setShortcut ("Ctrl+Q") act.triggered.connect (self.close) fileMenu.addAction (act) editMenu = self.menuBar().addMenu ("&Edit") act = QAction ("set &Font", self) act.triggered.connect (self.selectFont) editMenu.addAction (act) runMenu = self.menuBar().addMenu ("&Run") act = QAction ("&Compile and Run", self) act.setShortcut ("F5") act.triggered.connect (self.runFile) runMenu.addAction (act) def openFile (self) : self.fileName = dialog_to_str (QFileDialog.getOpenFileName (self, "Open File")) if self.fileName != "" : f = open (self.fileName) text = f.read () self.edit.setPlainText (text) self.setWindowTitle (self.fileName) def saveFile (self) : self.fileName = dialog_to_str (QFileDialog.getSaveFileName (self, "Save File As", self.fileName)) if self.fileName != "" : text = self.edit.toPlainText () f = open (self.fileName, "w") f.write (text) self.setWindowTitle (self.fileName) def selectFont (self) : font, ok = QFontDialog.getFont (self.edit.currentFont (), self) if ok : self.edit.setFont (font) self.output.setFont (font) def runFile (self) : if self.fileName != "" : self.output.clear () cmd = "gcc " + self.fileName + " -lstdc++ -o run.bin && ./run.bin && rm ./run.bin" self.output.append (cmd) proc = subprocess.Popen (cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) for line in proc.stderr : self.output.append (bytearray_to_str (line)) for line in proc.stdout : self.output.append (bytearray_to_str (line)) # -------------------------------------------------------------------------- if __name__ == "__main__" : app = QApplication (sys.argv) win = Window () win.show () app.exec_ ()
