I have spent some time making an example code-completion application,
mostly to educate myself. This simple application
(1) reads a raw .api file,
(2) prepares the file for loading into a lexer
(3) finally loads it and creates a new QScintilla object using the
prepared API and turns code-completion on.
Sadly, the code-completion didn't work. It didn't work until the
"finished" function that loads the prepared API raised an exception at
the end, then code completion works!
If the exception is not raised, then code-completion doesn't work.
I'm using
Qt-4.4.0
PyQt 4.4.2
QScintilla-commercial-2.2
Here is the application:
# begin sample application #
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.Qsci import *
import sys
# Examle API
TESTAPI= """Constant1
Constant2
unknownFunction(??)
knownFunction(name, directory)
knownFunction2(number,string)
module.function(??)
"""
class Main(QMainWindow):
def __init__(self):
QMainWindow.__init__(self, None)
b = QPushButton("Start", self)
b.connect(b, SIGNAL("clicked()"), self.start)
def start(self):
lexer = self.lexer = QsciLexerPython()
api = QsciAPIs(lexer)
# write the API to a file
self.api = api
test = open('test.api','w')
test.write(TESTAPI)
test.close()
# load the api into
assert api.load("test.api")
api.connect(api, SIGNAL("apiPreparationStarted()"),
self.started)
api.connect(api, SIGNAL("apiPreparationFinished()"),
self.finished)
# prepare the binary version of the API, suitable for loading
api.prepare()
def started(self):
pass#QMessageBox.information(self, "Started", "Started")
def finished(self):
# save the api to a binary file
self.api.savePrepared("test.prepared")
# Shows how to use the prepared API inside Scintilla with a
prettier
# Python Mode
editor = self.editor = QsciScintilla()
editor.show()
lexer = QsciLexerPython()
api = QsciAPIs(lexer)
# load the api into the lexer so code-completion should
# work
assert api.loadPrepared("test.prepared")
lexer.setAPIs(api)
editor.setAutoCompletionSource(editor.AcsAPIs)
editor.setAutoCompletionThreshold(3)
editor.setLexer(lexer)
# set up the editor the prettier Python editing
editor.setIndentationsUseTabs(False)
font = QFont()
fm = QFontMetrics(font)
editor.setIndentationWidth(4)
editor.setTabWidth(4)
editor.show()
if sys.platform != "win32":
editor.zoomIn(3)
editor.setIndentationsUseTabs(False)
editor.setIndentationWidth(4)
editor.setTabWidth(4)
# conventionnaly, margin 0 is for line numbers
editor.setMarginWidth(0, fm.width( "00000" ) + 5)
editor.setMarginLineNumbers(0, True)
## Edge Mode shows a red vetical bar at 80 chars
editor.setEdgeMode(QsciScintilla.EdgeLine)
editor.setEdgeColor(QColor("#FF0000"))
## Folding visual : we will use boxes
editor.setFolding(QsciScintilla.BoxedTreeFoldStyle)
## Braces matching
editor.setBraceMatching(QsciScintilla.SloppyBraceMatch)
## Editing line color
editor.setCaretLineVisible(True)
editor.setCaretLineBackgroundColor(QColor("#CDA869"))
## Margins colors
# line numbers margin
editor.setMarginsBackgroundColor(QColor("#333333"))
editor.setMarginsForegroundColor(QColor("#CCCCCC"))
# folding margin colors (foreground,background)
editor.setFoldMarginColors(QColor("#99CC66"),QColor("#333300"))
# uncommenting this exception causes code-completion not to
work.
raise Exception("Why does this exception make code-completion
work?")
app = QApplication(sys.argv)
mw = Main()
mw.show()
app.exec_()
_______________________________________________
PyQt mailing list [email protected]
http://www.riverbankcomputing.com/mailman/listinfo/pyqt
