def __init__(self, appletID):
# Initialise the base classes.
super().__init__(appletID)
# Instantiate and register a Scintilla widget.
self.qteScintilla = self.qteAddWidget(QtmacsScintilla(self))
# Add all the fields necessar in the mode bar.
self._qteModeBar = QtmacsModeBar()
self._qteModeBar.qteAddMode('EOL', 'U')
self._qteModeBar.qteAddMode('READONLY', 'R')
self._qteModeBar.qteAddMode('MODIFIED', '-')
self._qteModeBar.qteAddMode('APPLETID', self.qteAppletID())
self._qteModeBar.qteAddMode('POSITION', '(0,0)')
self._qteModeBar.qteAddMode('OTHER', None)
# Arrange the Scintilla editor widget and the mode bar in a layout.
vbox = QtGui.QVBoxLayout()
vbox.addWidget(self.qteScintilla)
vbox.addWidget(self._qteModeBar)
self.setLayout(vbox)
# Intercept the position-changed signals.
self.qteScintilla.cursorPositionChanged.connect(
self.qteCursorPosChanged)
# Intercept the modification changed signal.
self.qteScintilla.modificationChanged.connect(
self.qteModificationChanged)
# Intercept the qtesigSaveState signal to know when
# the document is in its last saved state again.
self.qteScintilla.qteUndoStack.qtesigSavedState.connect(
self.qteSavedState)
# Query the end-of-line (EOL) mode and enforce it throughout
# the document.
eolmode = self.qteScintilla.eolMode()
self.qteScintilla.setEolMode(eolmode)
# Report the used EOL mode in the status buffer.
if eolmode == QtmacsScintilla.EolUnix:
self.qteMain.qteStatus('Using Unix EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Unix')
elif eolmode == QtmacsScintilla.EolWindows:
self.qteMain.qteStatus('Using Windows EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Dos')
elif eolmode == QtmacsScintilla.EolMac:
self.qteMain.qteStatus('Using Mac EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Mac')
else:
self.qteMain.qteStatus('Unknown EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Unknown')
# Initialise the file handle and file name.
self.file = self.fileName = None
# Load the file with name 'appletID'.
self.loadFile(appletID)
# Extract the file extension.
idx = appletID.rfind('.')
if idx >= 0:
ext = appletID[idx + 1:]
else:
ext = None
# Prevent Scintilla from auto-indenting when asked to
# add a new line. This is necessary because the new-line
# macro takes care of the indentation in order to keep
# the undo history consistent.
self.qteScintilla.setAutoIndent(False)
# Change indentation width and ensure that indents are actual
# whitespaces, not tabs.
self.qteScintilla.setTabWidth(4)
self.qteScintilla.setIndentationsUseTabs(False)
# Try to find a lexer for the file type to enable syntax
# highlighting and folding. If no appropriate lexer exists,
# then treat the file as pure text.
if ext in lexer_type:
self.qteScintilla.qteSetLexer(lexer_type[ext])
self.qteScintilla.setFolding(Qsci.QsciScintilla.BoxedTreeFoldStyle)
else:
# Disable margin #1 which is (by default) the symbol margin for
# eg. folding.
self.qteScintilla.setMarginWidth(1, 0)
# Increase all fonts by a factor of two for readability.
self.qteScintilla.zoomTo(2)
# Declare the content pristine.
self.qteScintilla.setModified(False)
class SciEditor(QtmacsApplet):
def __init__(self, appletID):
# Initialise the base classes.
super().__init__(appletID)
# Instantiate and register a Scintilla widget.
self.qteScintilla = self.qteAddWidget(QtmacsScintilla(self))
# Add all the fields necessar in the mode bar.
self._qteModeBar = QtmacsModeBar()
self._qteModeBar.qteAddMode('EOL', 'U')
self._qteModeBar.qteAddMode('READONLY', 'R')
self._qteModeBar.qteAddMode('MODIFIED', '-')
self._qteModeBar.qteAddMode('APPLETID', self.qteAppletID())
self._qteModeBar.qteAddMode('POSITION', '(0,0)')
self._qteModeBar.qteAddMode('OTHER', None)
# Arrange the Scintilla editor widget and the mode bar in a layout.
vbox = QtGui.QVBoxLayout()
vbox.addWidget(self.qteScintilla)
vbox.addWidget(self._qteModeBar)
self.setLayout(vbox)
# Intercept the position-changed signals.
self.qteScintilla.cursorPositionChanged.connect(
self.qteCursorPosChanged)
# Intercept the modification changed signal.
self.qteScintilla.modificationChanged.connect(
self.qteModificationChanged)
# Intercept the qtesigSaveState signal to know when
# the document is in its last saved state again.
self.qteScintilla.qteUndoStack.qtesigSavedState.connect(
self.qteSavedState)
# Query the end-of-line (EOL) mode and enforce it throughout
# the document.
eolmode = self.qteScintilla.eolMode()
self.qteScintilla.setEolMode(eolmode)
# Report the used EOL mode in the status buffer.
if eolmode == QtmacsScintilla.EolUnix:
self.qteMain.qteStatus('Using Unix EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Unix')
elif eolmode == QtmacsScintilla.EolWindows:
self.qteMain.qteStatus('Using Windows EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Dos')
elif eolmode == QtmacsScintilla.EolMac:
self.qteMain.qteStatus('Using Mac EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Mac')
else:
self.qteMain.qteStatus('Unknown EOL mode')
self._qteModeBar.qteChangeModeValue('EOL', 'Unknown')
# Initialise the file handle and file name.
self.file = self.fileName = None
# Load the file with name 'appletID'.
self.loadFile(appletID)
# Extract the file extension.
idx = appletID.rfind('.')
if idx >= 0:
ext = appletID[idx + 1:]
else:
ext = None
# Prevent Scintilla from auto-indenting when asked to
# add a new line. This is necessary because the new-line
# macro takes care of the indentation in order to keep
# the undo history consistent.
self.qteScintilla.setAutoIndent(False)
# Change indentation width and ensure that indents are actual
# whitespaces, not tabs.
self.qteScintilla.setTabWidth(4)
self.qteScintilla.setIndentationsUseTabs(False)
# Try to find a lexer for the file type to enable syntax
# highlighting and folding. If no appropriate lexer exists,
# then treat the file as pure text.
if ext in lexer_type:
self.qteScintilla.qteSetLexer(lexer_type[ext])
self.qteScintilla.setFolding(Qsci.QsciScintilla.BoxedTreeFoldStyle)
else:
# Disable margin #1 which is (by default) the symbol margin for
# eg. folding.
self.qteScintilla.setMarginWidth(1, 0)
# Increase all fonts by a factor of two for readability.
self.qteScintilla.zoomTo(2)
# Declare the content pristine.
self.qteScintilla.setModified(False)
@classmethod
def __qteRegisterAppletInit__(cls):
"""
Assciate various file types with this applet so that the
find-file macro will instantiate us automatically for
any of them.
"""
tmp = qte_global.findFile_types
tmp.insert(0, ('.*\.txt$', cls.__name__))
tmp.insert(0, ('.*\.py$', cls.__name__))
tmp.insert(0, ('.*\.sh$', cls.__name__))
tmp.insert(0, ('.*\.tex$', cls.__name__))
tmp.insert(0, ('.*\.cpp$', cls.__name__))
def qteCursorPosChanged(self, line, col):
# Update the line- and column number in the mode bar.
msg = '({},{})'.format(line, col)
self._qteModeBar.qteChangeModeValue('POSITION', msg)
def qteModificationChanged(self, mod):
"""
Update the modification status in the mode bar.
This slot is Connected to the ``modificationChanged`` signal
from the ``QtmacsScintilla`` widget.
"""
if mod:
s = '*'
else:
s = '-'
self._qteModeBar.qteChangeModeValue('MODIFIED', s)
def qteSavedState(self, msg):
"""
Set the modified state to 'Saved'.
This slot is connected to the ``qtesigSavedState`` signal
from the ``QtmacsUndoStack`` class. It calls the
``setModified`` method of the ``QtmacsScintilla`` widget
which, in turn, triggers the ``qteModificationChanged``
slot to ensure the mode bar status is updated accordingly.
"""
self.qteScintilla.setModified(False)
def loadFile(self, fileName):
"""
Display the file ``fileName``.
"""
self.fileName = fileName
# Assign QFile object with the current name.
self.file = QtCore.QFile(fileName)
if self.file.exists():
# Load the file into the widget and reset the undo stack
# to delete the undo object create by the setText method.
# Without it, an undo operation would delete the content
# of the widget which is intuitive.
self.qteScintilla.setText(open(fileName).read())
self.qteScintilla.qteUndoStack.reset()
else:
msg = "File <b>{}</b> does not exist".format(self.qteAppletID())
self.qteLogger.info(msg)