memcanvas.py 文件源码

def __init__(self, mem, syms=None, parent=None):
        e_memcanvas.MemoryCanvas.__init__(self, mem, syms=syms)
        QtWidgets.QPlainTextEdit.__init__(self, parent=parent)

        self.setReadOnly(True)
        self.cursorPositionChanged.connect(self._cursorChanged)

        self._highlighter = VivCanvasColors()
        self.setCurrentCharFormat(self._highlighter.getFormat(ContentTagsEnum.DEFAULT))
        self._cur_line_bg_color = self._highlighter.getColors(ContentTagsEnum.CURRENT_LINE)[1]

        self._canv_cache = None
        self._canv_curva = None
        self._canv_rend_middle = False
        self._do_heavy_highlight = False

        # keep track of highlighted blocks
        self._high_blocks = dict()
        self._high_bg_color = self._highlighter.getColors(ContentTagsEnum.HIGHLIGHT)[1]
        self._high_bg = QtGui.QBrush(self._high_bg_color)

        # Allow our parent to handle these...
        self.setAcceptDrops(False)

        # in case we want this canvas to display only a fixed amount of data at any time
        # useful for the function graph where one canvas renders one basic block of code etc.
        self._fixed_location = False
        # also in such cases we would like to know when the rendering of the given fixed region is done
        # because this rendering is done asynchronously in another thread
        self._render_counter = 0
        self._render_counter_lock = threading.Lock()

        self._max_text_width = 0
        self._cur_line_width = 0
        self._lines_height = 0