def createIconFromSvg(self, svg, color=None, colorsToBeReplaced=None):
""" Creates a QIcon given an SVG string.
Optionally replaces the colors in colorsToBeReplaced by color.
:param svg: string containing Scalable Vector Graphics XML
:param color: '#RRGGBB' string (e.g. '#FF0000' for red)
:param colorsToBeReplaced: optional list of colors to be replaced by color
If None, it will be set to the fill colors of the snip-icon libary
:return: QtGui.QIcon
"""
if colorsToBeReplaced is None:
colorsToBeReplaced = self.colorsToBeReplaced
if color:
for oldColor in colorsToBeReplaced:
svg = svg.replace(oldColor, color)
# From http://stackoverflow.com/questions/15123544/change-the-color-of-an-svg-in-qt
qByteArray = QtCore.QByteArray()
qByteArray.append(svg)
svgRenderer = QtSvg.QSvgRenderer(qByteArray)
icon = QtGui.QIcon()
for size in self.renderSizes:
pixMap = QtGui.QPixmap(QtCore.QSize(size, size))
pixMap.fill(QtCore.Qt.transparent)
pixPainter = QtGui.QPainter(pixMap)
pixPainter.setRenderHint(QtGui.QPainter.TextAntialiasing, True)
pixPainter.setRenderHint(QtGui.QPainter.Antialiasing, True)
svgRenderer.render(pixPainter)
pixPainter.end()
icon.addPixmap(pixMap)
return icon
def sizeHint(self):
""" The recommended size for the widget.
"""
size = QtCore.QSize()
size.setWidth(600)
size.setHeight(700)
return size
def resizeEvent(self, event):
""" Resizes the details box if present (i.e. when 'Show Details' button was clicked)
"""
result = super(ResizeDetailsMessageBox, self).resizeEvent(event)
details_box = self.findChild(QtWidgets.QTextEdit)
if details_box is not None:
#details_box.setFixedSize(details_box.sizeHint())
details_box.setFixedSize(QtCore.QSize(self.detailsBoxWidth, self.detailBoxHeight))
return result
def __init__(self, parent=None):
""" Constructor
"""
super(SyntaxTreeWidget, self).__init__(parent=parent)
self.setAlternatingRowColors(True)
self.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
self.setUniformRowHeights(True)
self.setAnimated(False)
self.setHeaderLabels(SyntaxTreeWidget.HEADER_LABELS)
tree_header = self.header()
self.add_header_context_menu(checked={'Node': True},
checkable={'Node': True},
enabled={'Node': False})
# Don't stretch last column, it doesn't play nice when columns hidden and then shown again.
tree_header.setStretchLastSection(False)
self.icon_factory = IconFactory.singleton()
self.row_size_hint = QtCore.QSize()
self.row_size_hint.setHeight(20)
self.setIconSize(QtCore.QSize(20, 20))
def _load_file(self, file_name):
""" Opens a file and sets self._file_name and self._source code if successful
"""
logger.debug("Opening {!r}".format(file_name))
in_file = QtCore.QFile(file_name)
if in_file.open(QtCore.QFile.ReadOnly | QtCore.QFile.Text):
text = in_file.readAll()
try:
source_code = str(text, encoding='utf-8') # Python 3
except TypeError:
source_code = str(text) # Python 2
self._file_name = file_name
self._source_code = source_code
else:
msg = "Unable to open file: {}".format(file_name)
logger.warning(msg)
QtWidgets.QMessageBox.warning(self, 'error', msg)
class SourceEditor(QtWidgets.QPlainTextEdit):
""" Source read-ony editor that can detect double clicks.
"""
sigTextClicked = QtCore.Signal(int, int)
def __init__(self, parent=None):
""" Constructor
"""
super(SourceEditor, self).__init__(parent=parent)
font = QtGui.QFont()
font.setFamily('Courier')
font.setFixedPitch(True)
# It's hard to make a platform independend font size
# http://stackoverflow.com/a/7381441/625350
if sys.platform.startswith('linux'):
font.setPointSize(12)
self.setReadOnly(True)
self.setFont(font)
self.setWordWrapMode(QtGui.QTextOption.NoWrap)
self.setCenterOnScroll(True)
self.setStyleSheet(
"selection-color: black; selection-background-color: #FFE000;")
def sizeHint(self):
""" The recommended size for the widget.
"""
size = QtCore.QSize()
size.setWidth(700)
size.setHeight(700)
return size
def mousePressEvent(self, mouseEvent):
""" On mouse press, the sigTextClicked(line_nr, column_nr) is emitted.
"""
if mouseEvent.button() == QtCore.Qt.LeftButton:
cursor = self.cursorForPosition(mouseEvent.pos())
# Since the word wrap is off, there is one block per line. Block numbers are zero-based
# but code lines start at 1.
self.sigTextClicked.emit(cursor.blockNumber() + 1,
cursor.positionInBlock())
def select_text(self, from_pos, to_line_pos):
""" Selects a text in the range from_line:col ... to_line:col
from_pos and to_line_pos should be a (line, column) tuple.
If from_pos is None, the selection starts at the beginning of the document.
If to_line_pos is None, the selection goes to the end of the document.
"""
text_cursor = self.textCursor()
# Select from back to front. This makes block better visible after scrolling.
if to_line_pos is None:
text_cursor.movePosition(QtGui.QTextCursor.End,
QtGui.QTextCursor.MoveAnchor)
else:
to_line, to_col = to_line_pos
to_text_block = self.document().findBlockByLineNumber(to_line - 1)
to_pos = to_text_block.position() + to_col
text_cursor.setPosition(to_pos, QtGui.QTextCursor.MoveAnchor)
if from_pos is None:
text_cursor.movePosition(QtGui.QTextCursor.Start,
QtGui.QTextCursor.KeepAnchor)
else:
from_line, from_col = from_pos
# findBlockByLineNumber seems to be 0-based.
from_text_block = self.document().findBlockByLineNumber(from_line -
1)
from_pos = from_text_block.position() + from_col
text_cursor.setPosition(from_pos, QtGui.QTextCursor.KeepAnchor)
self.setTextCursor(text_cursor)
self.ensureCursorVisible()
def get_last_pos(self):
""" Gets the linenr and column of the last character.
"""
text_cursor = self.textCursor()
text_cursor.movePosition(QtGui.QTextCursor.End,
QtGui.QTextCursor.MoveAnchor)
return (text_cursor.blockNumber() + 1, text_cursor.positionInBlock())
def get_qsettings():
""" Creates a QSettings object for this application.
We do not set the application and organization in the QApplication object to
prevent side-effects in case the AstViewer is imported.
"""
return QtCore.QSettings("titusjan.nl", PROGRAM_NAME)