def process( self ):
""" Parses the content and displays the results """
if not self.__connected:
self.__connectEditorSignals()
content = self.__editor.text()
self.__cf = getControlFlowFromMemory( content )
if len( self.__cf.errors ) != 0:
self.__navBar.updateInfoIcon( self.__navBar.STATE_BROKEN_UTD )
return
self.__navBar.updateInfoIcon( self.__navBar.STATE_OK_UTD )
# if len( self.__cf.warnings ) != 0:
# self.logMessage( "Parser warnings: " )
# for warn in self.__cf.warnings:
# print str( warn[0] ) + ": " + warn[1]
self.scene.clear()
try:
# Top level canvas has no adress and no parent canvas
canvas = VirtualCanvas( self.cflowSettings, None, None, None )
canvas.layout( self.__cf )
canvas.setEditor( self.__editor )
width, height = canvas.render()
self.scene.setSceneRect( 0, 0, width, height )
canvas.draw( self.scene, 0, 0 )
except Exception, exc:
print "Exception:\n" + str( exc )
def redrawScene(self):
"""Redraws the scene"""
smartZoomLevel = Settings()['smartZoom']
self.cflowSettings = getCflowSettings(self)
if self.dirty():
self.__displayProps = (self.cflowSettings.hidedocstrings,
self.cflowSettings.hidecomments,
self.cflowSettings.hideexcepts,
smartZoomLevel)
self.cflowSettings.itemID = 0
self.cflowSettings = tweakSmartSettings(self.cflowSettings,
smartZoomLevel)
self.scene().clear()
try:
fileName = self.__parentWidget.getFileName()
if not fileName:
fileName = self.__parentWidget.getShortName()
collapsedGroups = getCollapsedGroups(fileName)
# Top level canvas has no adress and no parent canvas
canvas = VirtualCanvas(self.cflowSettings, None, None,
self.__validGroups, collapsedGroups, None)
canvas.layoutModule(self.__cf)
canvas.setEditor(self.__editor)
width, height = canvas.render()
self.scene().setSceneRect(0, 0, width, height)
canvas.draw(self.scene(), 0, 0)
except Exception as exc:
logging.error(str(exc))
raise
def process( self ):
""" Parses the content and displays the results """
if not self.__connected:
self.__connectEditorSignals()
content = self.__editor.text()
cf = getControlFlowFromMemory( content )
if cf.errors:
self.__navBar.updateInfoIcon( self.__navBar.STATE_BROKEN_UTD )
errors = []
for err in cf.errors:
if err[ 0 ] == -1 and err[ 1 ] == -1:
errors.append( err[ 2 ] )
elif err[ 1 ] == -1:
errors.append( "[" + str( err[0] ) + ":] " + err[ 2 ] )
elif err[ 0 ] == -1:
errors.append( "[:" + str( err[1] ) + "] " + err[ 2 ] )
else:
errors.append( "[" + str( err[0] ) + ":" + str( err[1] ) + "] " + err[ 2 ] )
self.__navBar.setErrors( errors )
return
self.__cf = cf
# Validate CML comments
cmlWarnings = CMLVersion.validateCMLComments( self.__cf )
if cmlWarnings:
self.__cf.warnings += cmlWarnings
# That will clear the error tooltip as well
self.__navBar.updateInfoIcon( self.__navBar.STATE_OK_UTD )
if self.__cf.warnings:
warnings = []
for warn in self.__cf.warnings:
if warn[ 0 ] == -1 and warn[ 1 ] == -1:
warnings.append( warn[ 2 ] )
elif warn[ 1 ] == -1:
warnings.append( "[" + str( warn[0] ) + ":] " + warn[ 2 ] )
elif warn[ 0 ] == -1:
warnings.append( "[:" + str( warn[1] ) + "] " + warn[ 2 ] )
else:
warnings.append( "[" + str( warn[0] ) + ":" + str( warn[1] ) + "] " + warn[ 2 ] )
self.__navBar.setWarnings( warnings )
else:
self.__navBar.clearWarnings()
self.scene.clear()
try:
# Top level canvas has no adress and no parent canvas
canvas = VirtualCanvas( self.cflowSettings, None, None, None )
canvas.layoutModule( self.__cf )
canvas.setEditor( self.__editor )
width, height = canvas.render()
self.scene.setSceneRect( 0, 0, width, height )
canvas.draw( self.scene, 0, 0 )
except Exception, exc:
logging.error( str( exc ) )
raise
class FlowUIWidget(QWidget):
"""The widget which goes along with the text editor"""
def __init__(self, editor, parent):
QWidget.__init__(self, parent)
# It is always not visible at the beginning because there is no
# editor content at the start
self.setVisible(False)
self.__editor = editor
self.__parentWidget = parent
self.__connected = False
self.__needPathUpdate = False
self.cflowSettings = getCflowSettings(self)
self.__displayProps = (self.cflowSettings.hidedocstrings,
self.cflowSettings.hidecomments,
self.cflowSettings.hideexcepts,
Settings()['smartZoom'])
hLayout = QHBoxLayout()
hLayout.setContentsMargins(0, 0, 0, 0)
hLayout.setSpacing(0)
vLayout = QVBoxLayout()
vLayout.setContentsMargins(0, 0, 0, 0)
vLayout.setSpacing(0)
# Make pylint happy
self.__toolbar = None
self.__navBar = None
self.__cf = None
self.__canvas = None
self.__validGroups = []
self.__allGroupId = set()
# Create the update timer
self.__updateTimer = QTimer(self)
self.__updateTimer.setSingleShot(True)
self.__updateTimer.timeout.connect(self.process)
vLayout.addWidget(self.__createNavigationBar())
vLayout.addWidget(self.__createStackedViews())
hLayout.addLayout(vLayout)
hLayout.addWidget(self.__createToolbar())
self.setLayout(hLayout)
self.updateSettings()
# Connect to the change file type signal
self.__mainWindow = GlobalData().mainWindow
editorsManager = self.__mainWindow.editorsManagerWidget.editorsManager
editorsManager.sigFileTypeChanged.connect(self.__onFileTypeChanged)
Settings().sigHideDocstringsChanged.connect(
self.__onHideDocstringsChanged)
Settings().sigHideCommentsChanged.connect(self.__onHideCommentsChanged)
Settings().sigHideExceptsChanged.connect(self.__onHideExceptsChanged)
Settings().sigSmartZoomChanged.connect(self.__onSmartZoomChanged)
self.setSmartZoomLevel(Settings()['smartZoom'])
def getParentWidget(self):
return self.__parentWidget
def view(self):
"""Provides a reference to the current view"""
return self.smartViews.currentWidget()
def scene(self):
"""Provides a reference to the current scene"""
return self.view().scene
def __createToolbar(self):
"""Creates the toolbar"""
self.__toolbar = QToolBar(self)
self.__toolbar.setOrientation(Qt.Vertical)
self.__toolbar.setMovable(False)
self.__toolbar.setAllowedAreas(Qt.RightToolBarArea)
self.__toolbar.setIconSize(QSize(16, 16))
self.__toolbar.setFixedWidth(30)
self.__toolbar.setContentsMargins(0, 0, 0, 0)
# Buttons
saveAsMenu = QMenu(self)
saveAsSVGAct = saveAsMenu.addAction(getIcon('filesvg.png'),
'Save as SVG...')
saveAsSVGAct.triggered.connect(self.onSaveAsSVG)
saveAsPDFAct = saveAsMenu.addAction(getIcon('filepdf.png'),
'Save as PDF...')
saveAsPDFAct.triggered.connect(self.onSaveAsPDF)
saveAsPNGAct = saveAsMenu.addAction(getIcon('filepixmap.png'),
'Save as PNG...')
saveAsPNGAct.triggered.connect(self.onSaveAsPNG)
saveAsMenu.addSeparator()
saveAsCopyToClipboardAct = saveAsMenu.addAction(
getIcon('copymenu.png'), 'Copy to clipboard')
saveAsCopyToClipboardAct.triggered.connect(self.copyToClipboard)
self.__saveAsButton = QToolButton(self)
self.__saveAsButton.setIcon(getIcon('saveasmenu.png'))
self.__saveAsButton.setToolTip('Save as')
self.__saveAsButton.setPopupMode(QToolButton.InstantPopup)
self.__saveAsButton.setMenu(saveAsMenu)
self.__saveAsButton.setFocusPolicy(Qt.NoFocus)
self.__levelUpButton = QToolButton(self)
self.__levelUpButton.setFocusPolicy(Qt.NoFocus)
self.__levelUpButton.setIcon(getIcon('levelup.png'))
self.__levelUpButton.setToolTip('Smart zoom level up (Shift+wheel)')
self.__levelUpButton.clicked.connect(self.onSmartZoomLevelUp)
self.__levelIndicator = QLabel('<b>0</b>', self)
self.__levelIndicator.setAlignment(Qt.AlignCenter)
self.__levelDownButton = QToolButton(self)
self.__levelDownButton.setFocusPolicy(Qt.NoFocus)
self.__levelDownButton.setIcon(getIcon('leveldown.png'))
self.__levelDownButton.setToolTip('Smart zoom level down (Shift+wheel)')
self.__levelDownButton.clicked.connect(self.onSmartZoomLevelDown)
fixedSpacer = QWidget()
fixedSpacer.setFixedHeight(10)
self.__hideDocstrings = QToolButton(self)
self.__hideDocstrings.setCheckable(True)
self.__hideDocstrings.setIcon(getIcon('hidedocstrings.png'))
self.__hideDocstrings.setToolTip('Show/hide docstrings')
self.__hideDocstrings.setFocusPolicy(Qt.NoFocus)
self.__hideDocstrings.setChecked(Settings()['hidedocstrings'])
self.__hideDocstrings.clicked.connect(self.__onHideDocstrings)
self.__hideComments = QToolButton(self)
self.__hideComments.setCheckable(True)
self.__hideComments.setIcon(getIcon('hidecomments.png'))
self.__hideComments.setToolTip('Show/hide comments')
self.__hideComments.setFocusPolicy(Qt.NoFocus)
self.__hideComments.setChecked(Settings()['hidecomments'])
self.__hideComments.clicked.connect(self.__onHideComments)
self.__hideExcepts = QToolButton(self)
self.__hideExcepts.setCheckable(True)
self.__hideExcepts.setIcon(getIcon('hideexcepts.png'))
self.__hideExcepts.setToolTip('Show/hide except blocks')
self.__hideExcepts.setFocusPolicy(Qt.NoFocus)
self.__hideExcepts.setChecked(Settings()['hideexcepts'])
self.__hideExcepts.clicked.connect(self.__onHideExcepts)
spacer = QWidget()
spacer.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.__toolbar.addWidget(self.__saveAsButton)
self.__toolbar.addWidget(spacer)
self.__toolbar.addWidget(self.__levelUpButton)
self.__toolbar.addWidget(self.__levelIndicator)
self.__toolbar.addWidget(self.__levelDownButton)
self.__toolbar.addWidget(fixedSpacer)
self.__toolbar.addWidget(self.__hideDocstrings)
self.__toolbar.addWidget(self.__hideComments)
self.__toolbar.addWidget(self.__hideExcepts)
return self.__toolbar
def __createNavigationBar(self):
"""Creates the navigation bar"""
self.__navBar = ControlFlowNavigationBar(self)
return self.__navBar
def __createStackedViews(self):
"""Creates the graphics view"""
self.smartViews = QStackedWidget(self)
self.smartViews.setContentsMargins(0, 0, 0, 0)
self.smartViews.addWidget(CFGraphicsView(self.__navBar, self))
self.smartViews.addWidget(CFGraphicsView(self.__navBar, self))
return self.smartViews
def process(self):
"""Parses the content and displays the results"""
if not self.__connected:
self.__connectEditorSignals()
start = timer()
cf = getControlFlowFromMemory(self.__editor.text)
end = timer()
if cf.errors:
self.__navBar.updateInfoIcon(self.__navBar.STATE_BROKEN_UTD)
errors = []
for err in cf.errors:
if err[0] == -1 and err[1] == -1:
errors.append(err[2])
elif err[1] == -1:
errors.append('[' + str(err[0]) + ':] ' + err[2])
elif err[0] == -1:
errors.append('[:' + str(err[1]) + '] ' + err[2])
else:
errors.append('[' + str(err[0]) + ':' +
str(err[1]) + '] ' + err[2])
self.__navBar.setErrors(errors)
return
self.__cf = cf
if self.isDebugMode():
logging.info('Parsed file: %s', formatFlow(str(self.__cf)))
logging.info('Parse timing: %f', end - start)
# Collect warnings (parser + CML warnings) and valid groups
self.__validGroups = []
self.__allGroupId = set()
allWarnings = self.__cf.warnings + \
CMLVersion.validateCMLComments(self.__cf,
self.__validGroups,
self.__allGroupId)
# That will clear the error tooltip as well
self.__navBar.updateInfoIcon(self.__navBar.STATE_OK_UTD)
if allWarnings:
warnings = []
for warn in allWarnings:
if warn[0] == -1 and warn[1] == -1:
warnings.append(warn[2])
elif warn[1] == -1:
warnings.append('[' + str(warn[0]) + ':] ' + warn[2])
elif warn[0] == -1:
warnings.append('[:' + str(warn[1]) + '] ' + warn[2])
else:
warnings.append('[' + str(warn[0]) + ':' +
str(warn[1]) + '] ' + warn[2])
self.__navBar.setWarnings(warnings)
else:
self.__navBar.clearWarnings()
self.redrawScene()
def __cleanupCanvas(self):
"""Cleans up the canvas"""
if self.__canvas is not None:
self.__canvas.cleanup()
self.__canvas = None
for item in self.scene().items():
item.cleanup()
self.scene().clear()
def redrawScene(self):
"""Redraws the scene"""
smartZoomLevel = Settings()['smartZoom']
self.cflowSettings = getCflowSettings(self)
if self.dirty():
self.__displayProps = (self.cflowSettings.hidedocstrings,
self.cflowSettings.hidecomments,
self.cflowSettings.hideexcepts,
smartZoomLevel)
self.cflowSettings.itemID = 0
self.cflowSettings = tweakSmartSettings(self.cflowSettings,
smartZoomLevel)
try:
fileName = self.__parentWidget.getFileName()
if not fileName:
fileName = self.__parentWidget.getShortName()
collapsedGroups = getCollapsedGroups(fileName)
# Top level canvas has no adress and no parent canvas
self.__cleanupCanvas()
self.__canvas = VirtualCanvas(self.cflowSettings, None, None,
self.__validGroups, collapsedGroups,
None)
lStart = timer()
self.__canvas.layoutModule(self.__cf)
lEnd = timer()
self.__canvas.setEditor(self.__editor)
width, height = self.__canvas.render()
rEnd = timer()
self.scene().setSceneRect(0, 0, width, height)
self.__canvas.draw(self.scene(), 0, 0)
dEnd = timer()
if self.isDebugMode():
logging.info('Redrawing is done. Size: %d x %d', width, height)
logging.info('Layout timing: %f', lEnd - lStart)
logging.info('Render timing: %f', rEnd - lEnd)
logging.info('Draw timing: %f', dEnd - rEnd)
except Exception as exc:
logging.error(str(exc))
raise
def onFlowZoomChanged(self):
"""Triggered when a flow zoom is changed"""
if self.__cf:
selection = self.scene().serializeSelection()
firstOnScreen = self.scene().getFirstLogicalItem()
self.cflowSettings.onFlowZoomChanged()
self.redrawScene()
self.updateNavigationToolbar('')
self.scene().restoreSelectionByID(selection)
self.__restoreScroll(firstOnScreen)
def __onFileTypeChanged(self, fileName, uuid, newFileType):
"""Triggered when a buffer content type has changed"""
if self.__parentWidget.getUUID() != uuid:
return
if not isPythonMime(newFileType):
self.__disconnectEditorSignals()
self.__updateTimer.stop()
self.__cleanupCanvas()
self.__cf = None
self.__validGroups = []
self.setVisible(False)
self.__navBar.updateInfoIcon(self.__navBar.STATE_UNKNOWN)
return
# Update the bar and show it
self.setVisible(True)
self.process()
# The buffer type change event comes when the content is loaded first
# time. So this is a good point to restore the position
_, _, _, cflowHPos, cflowVPos = getFilePosition(fileName)
self.setScrollbarPositions(cflowHPos, cflowVPos)
def terminate(self):
"""Called when a tab is closed"""
if self.__updateTimer.isActive():
self.__updateTimer.stop()
self.__updateTimer.deleteLater()
self.__disconnectEditorSignals()
self.__mainWindow = GlobalData().mainWindow
editorsManager = self.__mainWindow.editorsManagerWidget.editorsManager
editorsManager.sigFileTypeChanged.disconnect(self.__onFileTypeChanged)
Settings().sigHideDocstringsChanged.disconnect(
self.__onHideDocstringsChanged)
Settings().sigHideCommentsChanged.disconnect(self.__onHideCommentsChanged)
Settings().sigHideExceptsChanged.disconnect(self.__onHideExceptsChanged)
Settings().sigSmartZoomChanged.disconnect(self.__onSmartZoomChanged)
# Helps GC to collect more
self.__cleanupCanvas()
for index in range(self.smartViews.count()):
self.smartViews.widget(index).terminate()
self.smartViews.widget(index).deleteLater()
self.smartViews.deleteLater()
self.__navBar.deleteLater()
self.__cf = None
self.__saveAsButton.menu().deleteLater()
self.__saveAsButton.deleteLater()
self.__levelUpButton.clicked.disconnect(self.onSmartZoomLevelUp)
self.__levelUpButton.deleteLater()
self.__levelDownButton.clicked.disconnect(self.onSmartZoomLevelDown)
self.__levelDownButton.deleteLater()
self.__hideDocstrings.clicked.disconnect(self.__onHideDocstrings)
self.__hideDocstrings.deleteLater()
self.__hideComments.clicked.disconnect(self.__onHideComments)
self.__hideComments.deleteLater()
self.__hideExcepts.clicked.disconnect(self.__onHideExcepts)
self.__hideExcepts.deleteLater()
self.__toolbar.deleteLater()
self.__editor = None
self.__parentWidget = None
self.cflowSettings = None
self.__displayProps = None
def __connectEditorSignals(self):
"""When it is a python file - connect to the editor signals"""
if not self.__connected:
self.__editor.cursorPositionChanged.connect(
self.__cursorPositionChanged)
self.__editor.textChanged.connect(self.__onBufferChanged)
self.__connected = True
def __disconnectEditorSignals(self):
"""Disconnect the editor signals when the file is not a python one"""
if self.__connected:
self.__editor.cursorPositionChanged.disconnect(
self.__cursorPositionChanged)
self.__editor.textChanged.disconnect(self.__onBufferChanged)
self.__connected = False
def __cursorPositionChanged(self):
"""Cursor position changed"""
# The timer should be reset only in case if the redrawing was delayed
if self.__updateTimer.isActive():
self.__updateTimer.stop()
self.__updateTimer.start(IDLE_TIMEOUT)
def __onBufferChanged(self):
"""Triggered to update status icon and to restart the timer"""
self.__updateTimer.stop()
if self.__navBar.getCurrentState() in [self.__navBar.STATE_OK_UTD,
self.__navBar.STATE_OK_CHN,
self.__navBar.STATE_UNKNOWN]:
self.__navBar.updateInfoIcon(self.__navBar.STATE_OK_CHN)
else:
self.__navBar.updateInfoIcon(self.__navBar.STATE_BROKEN_CHN)
self.__updateTimer.start(IDLE_TIMEOUT)
def redrawNow(self):
"""Redraw the diagram regardless of the timer"""
if self.__updateTimer.isActive():
self.__updateTimer.stop()
self.process()
def generateNewGroupId(self):
"""Generates a new group ID (string)"""
# It can also consider the current set of the groups: valid + invalid
# and generate an integer id which is shorter
for vacantGroupId in range(1000):
groupId = str(vacantGroupId)
if not groupId in self.__allGroupId:
return groupId
# Last resort
return str(uuid.uuid1())
def updateNavigationToolbar(self, text):
"""Updates the toolbar text"""
if self.__needPathUpdate:
self.__navBar.setPath(text)
def updateSettings(self):
"""Updates settings"""
self.__needPathUpdate = Settings()['showCFNavigationBar']
self.__navBar.setPathVisible(self.__needPathUpdate)
self.__navBar.setPath('')
def highlightAtAbsPos(self, absPos, line, pos):
"""Scrolls the view to the item closest to absPos and selects it.
line and pos are 1-based
"""
item, _ = self.scene().getNearestItem(absPos, line, pos)
if item:
GlobalData().mainWindow.setFocusToFloatingRenderer()
self.scene().clearSelection()
item.setSelected(True)
self.view().scrollTo(item)
self.setFocus()
def setFocus(self):
"""Sets the focus"""
self.view().setFocus()
@staticmethod
def __getDefaultSaveDir():
"""Provides the default directory to save files to"""
project = GlobalData().project
if project.isLoaded():
return project.getProjectDir()
return QDir.currentPath()
def __selectFile(self, extension):
"""Picks a file of a certain extension"""
dialog = QFileDialog(self, 'Save flowchart as')
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setLabelText(QFileDialog.Accept, "Save")
dialog.setNameFilter(extension.upper() + " files (*." +
extension.lower() + ")")
urls = []
for dname in QDir.drives():
urls.append(QUrl.fromLocalFile(dname.absoluteFilePath()))
urls.append(QUrl.fromLocalFile(QDir.homePath()))
project = GlobalData().project
if project.isLoaded():
urls.append(QUrl.fromLocalFile(project.getProjectDir()))
dialog.setSidebarUrls(urls)
suggestedFName = self.__parentWidget.getFileName()
if '.' in suggestedFName:
dotIndex = suggestedFName.rindex('.')
suggestedFName = suggestedFName[:dotIndex]
dialog.setDirectory(self.__getDefaultSaveDir())
dialog.selectFile(suggestedFName + "." + extension.lower())
dialog.setOption(QFileDialog.DontConfirmOverwrite, False)
dialog.setOption(QFileDialog.DontUseNativeDialog, True)
if dialog.exec_() != QDialog.Accepted:
return None
fileNames = dialog.selectedFiles()
fileName = os.path.abspath(str(fileNames[0]))
if os.path.isdir(fileName):
logging.error("A file must be selected")
return None
if "." not in fileName:
fileName += "." + extension.lower()
# Check permissions to write into the file or to a directory
if os.path.exists(fileName):
# Check write permissions for the file
if not os.access(fileName, os.W_OK):
logging.error("There is no write permissions for " + fileName)
return None
else:
# Check write permissions to the directory
dirName = os.path.dirname(fileName)
if not os.access(dirName, os.W_OK):
logging.error("There is no write permissions for the "
"directory " + dirName)
return None
if os.path.exists(fileName):
res = QMessageBox.warning(
self, "Save flowchart as",
"<p>The file <b>" + fileName + "</b> already exists.</p>",
QMessageBox.StandardButtons(QMessageBox.Abort |
QMessageBox.Save),
QMessageBox.Abort)
if res == QMessageBox.Abort or res == QMessageBox.Cancel:
return None
# All prerequisites are checked, return a file name
return fileName
def onSaveAsSVG(self):
"""Triggered on the 'Save as SVG' button"""
fileName = self.__selectFile("svg")
if fileName is None:
return False
try:
self.__saveAsSVG(fileName)
except Exception as excpt:
logging.error(str(excpt))
return False
return True
def __saveAsSVG(self, fileName):
"""Saves the flowchart as an SVG file"""
generator = QSvgGenerator()
generator.setFileName(fileName)
generator.setSize(QSize(self.scene().width(), self.scene().height()))
painter = QPainter(generator)
self.scene().render(painter)
painter.end()
def onSaveAsPDF(self):
"""Triggered on the 'Save as PDF' button"""
fileName = self.__selectFile("pdf")
if fileName is None:
return False
try:
self.__saveAsPDF(fileName)
except Exception as excpt:
logging.error(str(excpt))
return False
return True
def __saveAsPDF(self, fileName):
"""Saves the flowchart as an PDF file"""
printer = QPrinter()
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setPaperSize(QSizeF(self.scene().width(),
self.scene().height()), QPrinter.Point)
printer.setFullPage(True)
printer.setOutputFileName(fileName)
painter = QPainter(printer)
self.scene().render(painter)
painter.end()
def onSaveAsPNG(self):
"""Triggered on the 'Save as PNG' button"""
fileName = self.__selectFile("png")
if fileName is None:
return False
try:
self.__saveAsPNG(fileName)
except Exception as excpt:
logging.error(str(excpt))
return False
return True
def __getPNG(self):
"""Renders the scene as PNG"""
image = QImage(self.scene().width(), self.scene().height(),
QImage.Format_ARGB32_Premultiplied)
painter = QPainter(image)
# It seems that the better results are without antialiasing
# painter.setRenderHint( QPainter.Antialiasing )
self.scene().render(painter)
painter.end()
return image
def __saveAsPNG(self, fileName):
"""Saves the flowchart as an PNG file"""
image = self.__getPNG()
image.save(fileName, "PNG")
def copyToClipboard(self):
"""Copies the rendered scene to the clipboard as an image"""
image = self.__getPNG()
clip = QApplication.clipboard()
clip.setImage(image)
def getScrollbarPositions(self):
"""Provides the scrollbar positions"""
hScrollBar = self.view().horizontalScrollBar()
vScrollBar = self.view().verticalScrollBar()
return hScrollBar.value(), vScrollBar.value()
def setScrollbarPositions(self, hPos, vPos):
"""Sets the scrollbar positions for the view"""
self.view().horizontalScrollBar().setValue(hPos)
self.view().verticalScrollBar().setValue(vPos)
def __onHideDocstrings(self):
"""Triggered when a hide docstring button is pressed"""
Settings()['hidedocstrings'] = not Settings()['hidedocstrings']
def __onHideDocstringsChanged(self):
"""Signalled by settings"""
selection = self.scene().serializeSelection()
firstOnScreen = self.scene().getFirstLogicalItem()
settings = Settings()
self.__hideDocstrings.setChecked(settings['hidedocstrings'])
if self.__checkNeedRedraw():
self.scene().restoreSelectionByID(selection)
self.__restoreScroll(firstOnScreen)
def __onHideComments(self):
"""Triggered when a hide comments button is pressed"""
Settings()['hidecomments'] = not Settings()['hidecomments']
def __onHideCommentsChanged(self):
"""Signalled by settings"""
selection = self.scene().serializeSelection()
firstOnScreen = self.scene().getFirstLogicalItem()
settings = Settings()
self.__hideComments.setChecked(settings['hidecomments'])
if self.__checkNeedRedraw():
self.scene().restoreSelectionByID(selection)
self.__restoreScroll(firstOnScreen)
def __onHideExcepts(self):
"""Triggered when a hide except blocks button is pressed"""
Settings()['hideexcepts'] = not Settings()['hideexcepts']
def __onHideExceptsChanged(self):
"""Signalled by settings"""
selection = self.scene().serializeSelection()
firstOnScreen = self.scene().getFirstLogicalItem()
settings = Settings()
self.__hideExcepts.setChecked(settings['hideexcepts'])
if self.__checkNeedRedraw():
self.scene().restoreSelectionByTooltip(selection)
self.__restoreScroll(firstOnScreen)
def __checkNeedRedraw(self):
"""Redraws the scene if necessary when a display setting is changed"""
editorsManager = self.__mainWindow.editorsManagerWidget.editorsManager
if self.__parentWidget == editorsManager.currentWidget():
self.updateNavigationToolbar('')
self.process()
return True
return False
def dirty(self):
"""True if some other tab has switched display settings"""
settings = Settings()
return self.__displayProps[0] != settings['hidedocstrings'] or \
self.__displayProps[1] != settings['hidecomments'] or \
self.__displayProps[2] != settings['hideexcepts'] or \
self.__displayProps[3] != settings['smartZoom']
def onSmartZoomLevelUp(self):
"""Triggered when an upper smart zoom level was requested"""
Settings().onSmartZoomIn()
def onSmartZoomLevelDown(self):
"""Triggered when an lower smart zoom level was requested"""
Settings().onSmartZoomOut()
def setSmartZoomLevel(self, smartZoomLevel):
"""Sets the new smart zoom level"""
maxSmartZoom = Settings().MAX_SMART_ZOOM
if smartZoomLevel < 0 or smartZoomLevel > maxSmartZoom:
return
self.__levelIndicator.setText('<b>' + str(smartZoomLevel) + '</b>')
self.__levelIndicator.setToolTip(
getSmartZoomDescription(smartZoomLevel))
self.__levelUpButton.setEnabled(smartZoomLevel < maxSmartZoom)
self.__levelDownButton.setEnabled(smartZoomLevel > 0)
self.smartViews.setCurrentIndex(smartZoomLevel)
def __onSmartZoomChanged(self):
"""Triggered when a smart zoom changed"""
selection = self.scene().serializeSelection()
firstOnScreen = self.scene().getFirstLogicalItem()
self.setSmartZoomLevel(Settings()['smartZoom'])
if self.__checkNeedRedraw():
self.scene().restoreSelectionByTooltip(selection)
self.__restoreScroll(firstOnScreen)
def __restoreScroll(self, toItem):
"""Restores the view scrolling to the best possible position"""
if toItem:
lineRange = toItem.getLineRange()
absPosRange = toItem.getAbsPosRange()
item, _ = self.scene().getNearestItem(absPosRange[0],
lineRange[0], 0)
if item:
self.view().scrollTo(item, True)
self.view().horizontalScrollBar().setValue(0)
def validateCollapsedGroups(self, fileName):
"""Checks that there are no collapsed groups which are invalid"""
if self.__navBar.getCurrentState() != self.__navBar.STATE_OK_UTD:
return
collapsedGroups = getCollapsedGroups(fileName)
if collapsedGroups:
toBeDeleted = []
for groupId in collapsedGroups:
for validId, start, end in self.__validGroups:
del start
del end
if validId == groupId:
break
else:
toBeDeleted.append(groupId)
if toBeDeleted:
for groupId in toBeDeleted:
collapsedGroups.remove(groupId)
setCollapsedGroups(fileName, collapsedGroups)
else:
setCollapsedGroups(fileName, [])
def getDocItemByAnchor(self, anchor):
"""Provides the graphics item for the given anchor if so"""
return self.scene().getDocItemByAnchor(anchor)
@staticmethod
def isDebugMode():
"""True if it is a debug mode"""
return GlobalData().skin['debug']
def process(self):
""" Parses the content and displays the results """
if not self.__connected:
self.__connectEditorSignals()
content = self.__editor.text()
cf = getControlFlowFromMemory(content)
if cf.errors:
self.__navBar.updateInfoIcon(self.__navBar.STATE_BROKEN_UTD)
errors = []
for err in cf.errors:
if err[0] == -1 and err[1] == -1:
errors.append(err[2])
elif err[1] == -1:
errors.append("[" + str(err[0]) + ":] " + err[2])
elif err[0] == -1:
errors.append("[:" + str(err[1]) + "] " + err[2])
else:
errors.append("[" + str(err[0]) + ":" + str(err[1]) +
"] " + err[2])
self.__navBar.setErrors(errors)
return
self.__cf = cf
# Validate CML comments
cmlWarnings = CMLVersion.validateCMLComments(self.__cf)
if cmlWarnings:
self.__cf.warnings += cmlWarnings
# That will clear the error tooltip as well
self.__navBar.updateInfoIcon(self.__navBar.STATE_OK_UTD)
if self.__cf.warnings:
warnings = []
for warn in self.__cf.warnings:
if warn[0] == -1 and warn[1] == -1:
warnings.append(warn[2])
elif warn[1] == -1:
warnings.append("[" + str(warn[0]) + ":] " + warn[2])
elif warn[0] == -1:
warnings.append("[:" + str(warn[1]) + "] " + warn[2])
else:
warnings.append("[" + str(warn[0]) + ":" + str(warn[1]) +
"] " + warn[2])
self.__navBar.setWarnings(warnings)
else:
self.__navBar.clearWarnings()
self.scene.clear()
try:
# Top level canvas has no adress and no parent canvas
canvas = VirtualCanvas(self.cflowSettings, None, None, None)
canvas.layoutModule(self.__cf)
canvas.setEditor(self.__editor)
width, height = canvas.render()
self.scene.setSceneRect(0, 0, width, height)
canvas.draw(self.scene, 0, 0)
except Exception, exc:
logging.error(str(exc))
raise